JPH071409A - Method and apparatus for manufacturing laminated material - Google Patents

Abstract

PURPOSE:To reduce a manufacturing man-hour and to reduce a manufacturing cost by using stems of gramineous plants such as kaoliang stems, etc., to be semipermanently supplied and using the stems of the grasses as they are or them by rolling. CONSTITUTION:Since flat stems 3 are, after cracks are generated in a fiber direction by collapsing means, dipped in thermosetting resin liquid (r), the stems 3 are effectively impregnated with the liquid (r). Since dry stems 6 are sutured in an aligned state before laminating, bundled to a sheetlike matter 8, it is easily handled at the time of laminating to improve operability. Even if diameters of the stems 3 for constituting the matter 8 are irregular to cause uneven surface to be formed on the matter 8, the stems 6 are spaced at an interval. Thus, when they are brought into pressure contact and superposed with the matter 8 or when the matter 8 is again pressed to be collapsed to coat its surface with adhesive, the dry stems are spread in gaps provided between the stems 6 to prevent waviness.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing a laminated material made of grass stems such as high-grade corn, corn and sugar cane. More specifically, the present invention relates to a method for manufacturing a reinforced laminated material used for building materials, furniture materials, heat insulating materials, sound absorbing materials, display materials, and various working materials, and its apparatus.

[0002]

2. Description of the Related Art Conventionally, it has been proposed to use particle boards, fiber boards, etc. in addition to sawed wood, plywood laminated wood, etc. for wood-based construction materials, furniture materials, display materials, sound absorbing materials, various work materials, etc. There is. In this particle board and fiber board, wood resin is crushed into fine pieces, and an adhesive of synthetic resin is mixed and heat-pressed by a press machine to form a plate, and if necessary, it can be used in grasses such as straw and sugar cane. Adding plant strips. In such a plywood, the raw material can be effectively used by crushing the raw material finely and the processing can be easily performed, however, on the other hand, since the raw material cellulose fiber is finely crushed, the plywood is formed when the raw material is formed into a plate shape. There is a problem that sufficient mechanical strength cannot be given and the dimensions are not always uniform. In addition, since the plate-like materials that use these wood-based materials as their raw materials are mainly made of natural wood, considering the problems that have a great impact on the global environment in recent years, such as the progress of desertification by deforestation of wood, There is a limit to the supply of resources. In particular, the sawn timber and the plywood laminated wood are made of wood itself, and in order to obtain the required material strength and dimensional stability, there is a problem that only a limited part of the wood can be used and the yield is low.

Further, conventionally, a display material, a sound absorbing material,
It has been proposed to use solid bodies or foams of synthetic resins such as polystyrene, polyurethane, polyethylene, phenol resins, melamine resins, and urea resins for the heat insulating materials. These synthetic resins are lightweight and have good workability, and since foams have excellent sound absorbing and heat insulating properties, they are widely used as display materials and heat insulating materials, but their raw materials depend on petroleum resources. Therefore, the supply amount of petroleum resources will be limited in the future, and there is a possibility that the global environment such as air pollution and global warming will be greatly affected.

In view of such global environmental problems,
The present inventors are abundant in the world, and can be re-produced annually, and it is difficult to even dispose of high-lying,
We filed a patent application for a reinforced laminated material using stalks of gramineous plants such as corn and sugar cane, and a method for producing the same (Japanese Patent Laid-Open Publication No. 6-58242).
3-107505, JP-A-1-280538, and JP-A-4-47902). In Japanese Patent Laid-Open No. 63-107505, Takayanagi, corn, plant stems of grasses such as sugar cane are cut open in the fiber direction, cored and degreased if necessary, and rolled in the open state, Disclosed is a method of arranging a plurality of rolled stalks in parallel with each other to form a sheet-like article, applying a known adhesive to the plurality of sheet-like articles, and laminating and pressing the sheet-like article. Has been done.

Further, Japanese Patent Laid-Open No. 1-280538 discloses that the plant stem of the Gramineae is not cut in the fiber direction.
In the state as it is, or to form a flat stem by flattening by compression, to form a flat stem layer by arranging a plurality of flat stems in parallel with each other, after applying a known adhesive to the plurality of flat stem layers, A method in which these are laminated and pressure-molded is disclosed. Further, in Japanese Patent Laid-Open No. 4-47902, the plant stem of the Gramineae is not cut in the fiber direction but is left as it is, or is flattened by compression to form a flat stem, or the plant stem is divided into two. Or, open and perform core removal and degreasing if necessary, and roll in the state of being open to form a rolling stem, and form these flat stems and rolling stems in parallel to form a sheet-like product. A method of applying an adhesive to a product, laminating the product, and pressure-molding the product is disclosed. In particular, this adhesive is used to remove excised leaves of the gramineous plant stem,
It is prepared by dissolving the hakama and the non-linear portion in phenols and then adding an aldehyde compound, an acid catalyst or an alkali catalyst to this solution.

When forming the above-mentioned sheet-like material, a plurality of stems are aligned in parallel and bound. It is possible to use an adhesive, a tape, or a thread for this binding. Generally, plant stems of the Gramineae that form a sheet do not have a constant stem diameter, but plant stems of different stem diameters are required to be bound in a flat state. As shown in FIG. 34, in the bundling with the adhesive a, since the adjacent flat stalks 3 are adhered to each other with the adhesive a, the flat stalks are brought into close contact with each other without a gap. As shown in FIG. 35, in bundling with tape b, a plurality of flat stems 3 arranged in parallel are used.
The tape b is wound so that it is vertically sandwiched along a direction substantially perpendicular to the longitudinal direction. Further, as shown in FIG. 36, in the binding by the thread, the upper thread L1 and the lower thread L2 are alternately woven between the adjacent flat stems 3. In the sheet-shaped material 8 formed by bundling as described above, it is not possible to provide a space between the flat stalks in any case, and the flat stalks are in close contact with each other. In addition, the laminated material made by these methods can be formed to have any specific gravity, weight and size.
It has also been confirmed that it has excellent performance in mechanical strength.

[0007]

However, the above-mentioned Japanese Unexamined Patent Application Publication No.
In the method described in Japanese Patent Laid-Open No. 3-107505, extremely high mechanical strength and dimensional stability can be obtained by decoring and degreasing plant stems, but on the other hand, in order to obtain a laminated material having a required thickness. The number of steps is increased, and more plant stems as a raw material are required, resulting in higher manufacturing cost. Further, in the method described in JP-A-1-280538, since the plant stem is used as it is, the manufacturing process can be simplified and the manufacturing cost can be suppressed at a low cost, but the above-mentioned JP-A-63-107505. The mechanical strength of the laminated material is lower than that of the laminated material according to the method described in Japanese Patent Publication No.
There is a problem that the laminated material swells and the dimensional stability is impaired. In addition, in the method of binding with an adhesive, since the side surfaces of the oblate stems having a substantially elliptic cylindrical shape are adhered to each other, there is a possibility that a sufficient adhesion area necessary for adhesion cannot be obtained and sufficient adhesion cannot be achieved. The diameters of the stems are not constant, and irregularities occur in a state where they are aligned in a line, and it is difficult to bond the stems to each other in the same plane. Also, in the method of binding with tape,
Since the flat stalks arranged in a sheet shape are sandwiched between the upper and lower parts with tape, the flat stalks with a large stem diameter adhere to the tape over a large area, while the flat stalks with a small stem contact the tape. There is a problem that the area is small, or they do not come into contact with each other at all so that a sufficient adhesion state cannot be obtained. Furthermore, in the method of binding with a thread, since the surface of the high stalk is composed of a wax component, it is slippery, and when the thread is tied with a strong tension to reduce slippage, the flat stems are arranged in a line. There is a risk that they will gather together and form a bundle.

An object of the present invention is to provide a method for manufacturing a laminated material and an apparatus therefor, which are suitable for mass production and have a low manufacturing cost by using an inexpensive material which can be supplied semipermanently and by reducing the number of manufacturing processes. Especially. Another object of the present invention is to provide a method and an apparatus for producing a laminated material having extremely high mechanical strength and dimensional stability. It is still another object of the present invention to provide a method for manufacturing a laminated material which is extremely lightweight and does not cause swelling due to water, and which is suitable for various applications, and an apparatus therefor.

[0009]

The structure of the present invention for achieving the above object will be described with reference to FIG. The method for producing a laminated material according to the present invention comprises a crushing step 20 of crushing a plurality of plant stems 1 of Gramineae into flat stalks 3 having cracks along the fiber direction, and a thermosetting resin for flat stalks 3. An impregnation step 30 for obtaining the impregnated stems 4 and 5 by impregnating the liquid r, a drying step 60 for drying the impregnated stems 4 and 5 to form the dried stems 6, and a plurality of dried stems 6 are aligned at intervals. , A suture step 80 that penetrates each of the aligned dry stems 6 to form the suture dry stems 7, and cuts a predetermined number of the suture dry stems 7 into a sheet-like material 8 and the surface of the sheet-like material 8 Adhesive applying step 9 of applying adhesive to the
0 and a plurality of sheet-shaped materials 8 to which the adhesive has been applied are laminated by adhering the adhesive-coated surfaces to each other with the dried stems arranged in different alignment directions, and pressing the laminated material to form a plurality of sheets. And a superposing step 100 for superposing the shaped articles 8 on each other.

Further, the laminated material producing apparatus of the present invention comprises a crushing means 21 for crushing a plurality of plant stems 1 of Gramineae into flat stalks 3 having cracks along the fiber direction, and flat stalks 3. The impregnating means 31 for obtaining the impregnated stems 4 and 5 by impregnating with the thermosetting resin liquid r, the drying means 61 for drying the impregnated stems 4 and 5 into the dried stems 6, and the plurality of the dried stems 6 A stitching means 81, which is aligned at intervals, penetrates a suture through each of the aligned dry stalks 6 to form a sewn dry stalk 7, and cuts a predetermined number of the dry stalks 7 into a sheet-shaped material 8. Adhesive applying means 91, 92, 93 for applying an adhesive to the surface of the object 8
151a and 151b and a plurality of sheet-shaped materials 8 to which the adhesive is applied are laminated by adhering the adhesive-coated surfaces with the dried stems in different alignment directions and adhering the adhesive-coated surfaces to each other. Stacking means 10 for stacking the sheet-like objects 8 of
It is an apparatus including 1,111.

[0011]

Since the flat bulb 3 is immersed in the thermosetting resin liquid r after the crushing means 21 has caused cracks in the fiber direction, the flat bulb 3 can be surely impregnated with the thermosetting resin liquid r. In addition, since the dried stems 6 are sewn in an aligned state and bound to form the sheet-like material 8 before stacking, handling becomes easy during stacking and workability is improved. Further, even if the diameters of the dried stems 6 constituting the sheet-like material 8 are uneven and the surface of the sheet-like material 8 is uneven due to this, there is a space between each of the dried stems 6. , When the sheet-like materials 8 are overlapped by pressing, or when the sheet-like material 8 is pressed again to apply an adhesive to the surface and crushed, the space provided between the dried stems 5 is reduced. The dried stems spread to prevent the sheet-like material 8 from waving, thereby making the sheet-like material 8 uniform and flat.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a manufacturing process of a laminated material according to an embodiment of the present invention. As a raw material of the laminated material of the present invention, plant stems of grasses such as high-capacity stems, sugar cane, and corn are used. The raw material of the laminated material is used without cutting leaves and hakama parts from the plant stem and cutting straight parts of the plant stem into fine pieces. In this example, the manufacturing process for obtaining a laminated material using the high-yarn stalk as a starting material will be described with the high-yam stalk as a representative example.

[0013] This high stalk is first subjected to both end cutting step 10
It is cut to an appropriate length that is easy to process. The cut high stalks are flattened by the appropriate roller pressure in the crushing step 20, and a plurality of cracks are formed on the stems to form flattened stems. Next, in order to impart sufficient strength and water resistance to the flat stalk, the flat stalk is kept in the thermosetting resin solution for a certain period of time in the impregnation step 30, and the thermosetting resin solution is flattened through cracks on the stalk. Impregnate into the stem. The impregnated stalk impregnated with the thermosetting resin liquid is passed between a pair of rollers arranged at a constant interval in the squeezing step 40 to squeeze the surplus impregnated thermosetting resin liquid. Excessive thermosetting resin liquid squeezed out is recovered in step 50 of circulating the thermosetting resin liquid, and impregnation step 3
The temperature and pH are kept at the optimum values together with the other thermosetting resin liquid circulating at 0, and then supplied to the impregnation step 30 again.

When this reinforced laminated material is completed as a decorative plywood, a wood single-layer board is joined to the surface thereof. This wood single-layer board is formed into a continuous wood single-layer board by cutting the surface layer from a cylindrical log at a constant thickness in the wood single-layer board manufacturing step 130, and It is obtained by cutting into a predetermined length and further drying in the drying step 60. The impregnated stem from which the thermosetting resin liquid has been squeezed out in the squeezing step 40 is dried in a drying step 60 for a certain period of time. A large number of dried stalks are distributed so as to form, for example, a three-layer sheet having an upper layer, a middle layer, and a lower layer. A laminated material is made by laminating these sheet materials. The dispensed dry stems are aligned in parallel in the suturing step 80, and are sequentially sutured with a suture so as to maintain the alignment. The dried suture stalk is cut at regular intervals so that the dried suture stalk has a constant length for easy handling.

The sheet material sewn in this way is flattened again in the same manner as in the crushing step 20, and then the step 9
At 0, adhesive is applied to the surface. Superposition process 10
At 0, the upper layer, the middle layer, and the lower layer-like sheet coated with the adhesive and the dried wood single-layer board are laminated. The laminates thus stacked are heated and pressed in a pressing step 110. In the vertical and horizontal cutting step 120, the pressure-bonded laminate is cut into uniform lengths in the vertical and horizontal sides to form a reinforced laminated material.

The manufacturing process of the reinforced laminated material as described above will be described in more detail with reference to FIGS. 2 to 31. Figure 2
Indicates the double-sided cutting machine 11 and its peripheral devices. The high stalk 1 having only the straight line portion obtained by cutting off the leaves and the hakama is put in the container of the raw material carrier 12 and transferred to the reversing machine 13 together with the container. The reversing machine 13 is moved up and down by a reversing actuator 13a so as to be reversed toward the sorting conveyor 14 when rising. By this reversal, the high stem 1 in the container is transferred onto the organizing conveyor 14. The high stalks 1 transferred onto the organizing conveyor 14 are conveyed by the organizing conveyor 14 and sent to the double-sided cutting machine 11. The both ends of the high stalk 1 are cut by the double-end cutting machine 11 to an appropriate length. The scraps C generated by the cutting are collected on a conveyor 15 provided below the double-sided cutting machine 11 for taking out the scraps, transported to another place, and reused after the transport.

The high stem 1 whose both ends are cut by the double-sided cutting machine 11 is supplied to the crushing machine supply conveyor 17 by the scraping conveyor 16 which operates intermittently. A partition 16a is provided on the conveying surface of the scraping conveyor 16,
Between the partitions 16a, approximately one high stalk 1 is stored. , The plurality of high stalks 1 conveyed by the scraping conveyor 16 drop onto the crusher supply conveyor 17 provided below the conveyor 16 at the uppermost position of the conveyor 16 and progress on the crusher supply conveyor 17. A plurality of lines are arranged substantially in parallel along the direction.

FIG. 3 shows the crusher 21 and its peripheral equipment. Both ends of the high stalks 1 conveyed to the uppermost position of the scraping conveyor 16 are supported on the reversing receiving plate 18 of the conveyor 16 until a certain number of the high stems 1 are aligned at the uppermost position. When a certain number of high stalks 1 are aligned at the uppermost position of the conveyor 16, the reversal receiving plate 18 is inverted and the support is released, and a certain number of crusher supply conveyors 17 are simultaneously supplied. A plurality of high stalks 1 arranged on the conveyor 17 in a substantially parallel manner are conveyed by the conveyor 17 and supplied to the crushing machine 21.

As shown in detail in FIGS. 4 and 5, the crushing machine 21 includes a pair of guide rolls 2 for guiding the high stem 1.
2 and a pair of crushing rolls 23 for crushing the guided high stem 1. The pair of guide rolls 22 is composed of a fixed guide roll 22b and a movable guide roll 22a provided so as to face the fixed guide roll 22b and driven by a guide roll drive transmission 24. The pair of crushing rolls 23 is composed of a fixed crushing roll 23b driven by a crushing roll drive transmission 25 and a movable crushing roll 23a provided so as to face the fixed crushing roll 23b. This movable guide roll 22a and movable crushing roll 23a
Is rotatably supported at both ends of its rotation axis,
The distance between the guide roll 22b and the crushing roll 23b is adjusted by the distance adjusters 26 and 27, respectively. The high stem 1 supplied from the double-sided cutting machine 11 by the crushing machine supply conveyor 17 is fed to the guide roll 22 in parallel with the fiber direction. The guide roll 22 reliably feeds the high stalk 1 to the crushing roll 23.

The epidermis of the high stalk 1 usually contains a wax component and has a slippery property. When the roll diameter of the guide roll 22 is sufficiently large, the high stem 1 is easily supplied to the roll gap even if it has a slippery skin, but when the roll diameter of the guide roll 22 is small, Due to the wax component of the epidermis, the high stalk 1 may slip, and it may not be easily supplied to the roll gap. Furthermore, since the high stalk 1 has various sizes from a small diameter to a large diameter, some stalks are not supplied at a constant roll interval. Therefore, as shown in FIG. 6, the guide roll 22 can be formed into a flat shape of the high stem 1 having various sizes from a small diameter to a large diameter and reliably sent to the crushing roll 23. A vertical groove 28 may be provided on the roll surface.

The chevron groove 28 guides the high stem 1 and causes a plurality of fine cracks in the epidermis.
Further, the guide roll 22 having the chevron groove 28 causes a sufficient crack in the epidermis of the high alum 1, and further preliminarily rolls the high alum 1. That is, by performing a preliminary rolling operation with the guide rolls 22 before rolling with the crushing rolls 23, the epidermis of the high stalk 1 is cracked and flattened, and the heat of the high stalk 1 described later is performed. Improving the impregnation property of the curable resin liquid to achieve a high speed impregnation process. In addition, by pre-crushing the high stalk 1 by preliminary rolling work, the compressive force in the crushing roll 23 is reduced, and the nodes, epidermis, and internal structure of the high stalk 1 are destroyed by excessive rolling. Also, it is possible to prevent breakage and the like. Further, by making the chevron groove 28 on the roll surface of the guide roll 22 a lateral groove, it becomes possible to more reliably crush the high stalk 1 and feed it to the roll 23. When the roll of the guide roll mechanism 22 has a vertical groove or a horizontal groove, the roll of the crushing roll mechanism 23 may have a vertical groove or a horizontal groove.

The temporary flat stalk thus flattened by the temporary rolling operation is sent to the crushing roll 23. The temporary flat stalks fed from the guide rolls 22 to the crushing rolls 23 are again flattened by the crushing rolls 23 having a predetermined roll interval. The crushing roll 23 has a flat roll without unevenness on the roll surface, and further spreads a plurality of cracks formed by the chevron grooves 28 of the guide roll 22 to destroy the epidermis and internal tissue of the temporary flat stalk. Can be rolled without. The high stalk 1 is likely to be broken at the knot, and its internal structure is easily destroyed by excessive rolling. Therefore, as described above, by rolling the guide roll 22 and the crushing roll 23 in two stages and applying a gentle pressure to the high stem 1, the internal structure is not destroyed and a plurality of cracks are formed. The flat stem 3 can be obtained. Further, a plurality of fine cracks generated in the flat stalk 3 by rolling facilitate the permeation of a thermosetting resin liquid described later to improve the strength of the flat stalk 3,
In other words, it improves the mechanical strength of the reinforced laminate. Further, the impregnation with the thermosetting resin liquid plays an important role in improving the water resistance of the flat stalk 3 and in other words, improving the water resistance of the reinforced laminated material.

FIG. 7 shows the impregnator 31 and its peripheral equipment, and FIG. 8 shows the impregnator supply conveyor 29 and its peripheral equipment. The flat stalks 3 supplied from the crushing machine 21 shown in FIG. 5 are supplied to the impregnating machine 31 by the impregnating machine supply conveyor 29 via the flat stalk organizing conveyor 201 shown in FIG.
The conveyor 201 is driven by the drive transmission 202.
A substantially L-shaped scraping support rod 29b is fixed to the conveying surface 29a of the impregnator supply conveyor 29, and a plurality of flat stems 3 are simultaneously supported by the scraping support rod 29b. As shown in FIG. 7, the flat bulb 3 supplied by the impregnator supply conveyor 29 is dipped in the thermosetting resin liquid r in the impregnator for a certain period of time to be impregnated with the thermosetting resin liquid r. The flat stems 3 that have been impregnated are transferred onto the impregnated stem organizing conveyor 32 and are conveyed to the next step by the conveyor 32. Excessive thermosetting resin liquid r spilling from the flat bulb 3 during transfer is recovered by the overflow chute 33. The recovered excess thermosetting resin liquid r is sent to the solution tank 34, where the pH value and temperature are measured, and then controlled to the optimum pH value and temperature,
It is sent to the impregnator 31 by the pump P2 for reuse. Further, the excess thermosetting resin liquid r is recovered from the squeezing machine 41 described later to the solution tank 34, and the replenishment solution R is also replenished.

FIG. 9 is a front view of the impregnating machine 31. The plurality of flat stalks 3 supplied from the impregnating machine supply conveyor 29 are supported by the flat stalk support rods 36a in parallel with the direction perpendicular to the moving direction of the belt conveyor 36 and at regular intervals. When the belt conveyor 36 is moved by the belt conveyor drive transmission 35, the flat stem 3 on the conveyor is moved.
Is immersed in the impregnating liquid filling the inside of the impregnating machine 31, that is, the thermosetting resin liquid r. At this time, the flat stems 3 are impregnated by the support rods 36a and the like, with their floating in the thermosetting resin liquid r being suppressed. In addition, it is preferable that the belt conveyor 36 be formed of a chain in order to suppress variations in the flat stems 3 during transportation. That is, the flat stem 3 is held without slipping due to the unevenness of the chain surface.

The flat stem 3 in the impregnation machine 31 is
Along the passage so as not to stay in the lowest solution pool 301 of No. 1, for example, a stem trap net 30 made of stainless steel.
2 is transferred to the raw material take-out chute 37. At this time, the surplus thermosetting resin liquid r is recovered by the overflow chute 33 (FIGS. 7, 9 and 10) provided at the passage point of the flat stem 3 between the belt conveyor 36 and the raw material discharge chute 37. Overflow shoot 3
In addition to this, 3 collects an excessive thermosetting resin liquid r that cannot be accommodated in the impregnating machine 31. That is, the thermosetting resin liquid r supplied from the liquid charging port (not shown) is prevented from overflowing the impregnating machine. The flat stem 3 is taken out from the chute 37 and becomes the impregnated stem 4. By continuously passing the flat stalk 3 through the impregnation machine 31, the impregnation machine 31 can continuously impregnate the flat stalk 3 and enable mass production of products.

Here, the thermosetting resin liquid r in the impregnator 31 will be described in detail. The thermosetting resin liquid r is a liquid substance that cures the impregnated stem 4 by heating the impregnated stem 4 impregnated with the resin liquid r, and is a liquid compound that can be polymerized, a resin liquid, or a mixture thereof. Polymerizable liquid monomers such as acrylic acid ester monomers, methyl methacrylate monomers, styrene monomers, etc. can be polymerized by condensation, polymerization or addition polymerization reaction of these liquid compounds that can be polymerized. Prepolymer, liquid isocyanate compound such as tolylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, xylylene diisocyanate, etc., or polymerization reaction such as furfural, furfuryl alcohol or lignocellulose liquefied liquid, condensation reaction or Examples thereof include liquid compounds that can be polymerized by addition condensation reaction and the like.

Here, the liquefied liquid of lignocellulose refers to a solution obtained by liquefying lignocellulose by adding phenols, polyols and the like to lignocellulose. This lignocellulosic liquefied liquid is, for example, a leaf or hakama part to be discarded as scraps of high stalks, curved stems not suitable for use, cutting scraps C cut by the double-end cutting machine 11, and the like. In the presence of 150-300 ℃, 1-1
It is prepared by dissolving under high temperature and high pressure of 00 atm. Further, as the resin liquid, a resin solution obtained by dissolving a thermoplastic resin such as an unsaturated polyester resin, an epoxy resin, a phenol resin, a melamine resin, or a urea resin in a solvent, or a resinification liquid of lignocellulose can be used. Here, the lignocellulosic resinification liquid refers to a resin liquid in which the lignocellulose liquefaction liquid is resinified with an aldehyde compound, an isocyanate compound or the like and dissolved in water or a solvent.

The flat stalk 3 dipped in the thermosetting resin liquid r as described above is moved by the belt conveyor 36 which is intermittently driven by the belt conveyor drive transmission 35 controlled at a constant rotation speed. Along with this, it moves in the thermosetting resin liquid r for a predetermined time. How much the thermosetting resin solution is impregnated into the flat bulb 3 when the flat bulb 3 is simply dipped in the thermosetting resin fluid is proportional to the time during which the flat bulb 3 is dipped in the thermosetting resin fluid, That time will be considered the impregnation time. The method of adjusting the impregnation time will be described below. Since this impregnation time is determined by the passage time of the flat stalk 3 which passes through the thermosetting resin liquid, the impregnation time is adjusted by the following method.

As a first adjusting method, the moving speed of the flat stalk 3 passing through the thermosetting resin liquid is adjusted. For this purpose, the drive speed of the conveyor drive transmission 35 is adjusted to adjust the moving speed of the conveyor 36. The impregnation time is adjusted by adjusting the moving speed of the flat bulb 3. In this method, since the intermittent operation speed of the impregnator 31 changes,
It is necessary to change the conveying speed of the squamous stem 3 or the number of steps before and after the impregnation step 30. For this reason, this method has a problem that the adjustment work of the line becomes complicated and the impregnation time cannot be easily adjusted.

As the second adjusting method, there is a method in which the moving speed of the flat bulb 3 is kept constant and the length of the passage in the thermosetting resin liquid through which the flat bulb passes is adjusted. That is, the liquid level adjuster 303 shown in FIG. 9 is used to adjust the liquid level in the impregnator 31 to adjust the amount of the thermosetting resin liquid r in the impregnator 31. As a result, the length of the passage in the solution through which the squamous stem passes is adjusted, and if the moving speed of the belt conveyor 36 is kept constant, the impregnation time of the squamous stem 3 is adjusted. Further, in order to increase the moving speed of the belt conveyor, it is preferable that the inclination angle of the bottom surface of the impregnating machine 31 is made gentle and the belt conveyor 36 is provided along the bottom surface.

The liquid level adjuster 303 shown in FIG.
Also, as shown in FIG. 12, a solution chute 303a and a solution partition 303b are provided. The solution chute 303a is provided near the upper end of the impregnator 31 and has a liquid inlet 304 in the upper part (FIG. 11 (A)). Slide rails 305 are provided on both sides of the liquid inlet 304.
Reference numeral 05 denotes a solution partition 303 for adjusting the liquid level in the impregnator 31.
b is installed slidably. This solution shoot 30
A liquid discharge port 3a for collecting the thermosetting resin liquid r flowing into the solution chute 303a and supplying it to the solution tank 3a.
06 is provided. A solution passage window 307 is formed in the solution partition 303b to limit the passage amount of the solution and to pass the solution (FIG. 11B). This solution passage window 3
Reference numeral 07 denotes a liquid inlet 30 by sliding the solution partition 303b.
It overlaps with 4.

As shown in FIGS. 11C and 11D, the solution partition 303b moves up and down to adjust the amount of the solution in the impregnator 31. That is, as shown in FIG. 11C, when the liquid passage window 307 is pulled up, the liquid inlet 304 is closed, and the liquid surface of the solution rises. On the contrary, when the liquid passage window 307 is lowered as shown in FIG.
4 is opened and the solution flows into the chute 303a, so that the liquid surface is lowered. In this way, the amount of the thermosetting resin liquid r contained in the impregnator 31 changes due to the vertical movement of the solution partition 303b. When the amount of the solution in the impregnation machine 31 changes, the distance of the passage of the flat bulb 3 in the solution is adjusted, and the impregnation time is arbitrarily determined. This method uses the belt conveyor 36
Since the moving speed is kept constant, it is not necessary to adjust the process processing speed or the number of steps of the other steps described above each time, and the impregnation time can be easily adjusted.

The thermosetting resin liquid r penetrates through the cracks formed in the epidermis of the flat stem 3 whose impregnation time is adjusted. This thermosetting resin liquid r is 5 with respect to the total dry weight of the flat bulb 3.
It is preferable that the impregnation is about 200% by weight. The squamous stem 3 is sufficiently impregnated with the thermosetting resin liquid r even at room temperature and atmospheric pressure, but the thermosetting resin liquid r may be impregnated into the squamous stem 3 in a heated or pressurized or depressurized state. . If the thermosetting resin liquid r contains a high molecular weight component,
When the impregnation amount of the thermosetting resin liquid r is 50% by weight or more, the thermosetting resin liquid r exudes from the flat stalk when laminated as a sheet-like article described later and pressed against the sheet-like article. Adhesion is caused, and the amount of adhesive used can be significantly reduced, which is preferable. However, thermosetting resin liquid r
When the high molecular weight component is not contained in, the impregnation amount of the thermosetting resin liquid r must be 50% by weight or more, or it is necessary to use an adhesive at the time of adhering the sheet material. On the other hand, if the impregnated amount of the thermosetting resin liquid r is less than 5% by weight, the reinforcing effect of the laminated material is not sufficiently obtained, and the dimensional stability is particularly poor. If it exceeds 200% by weight, impregnation becomes difficult, and even if forced impregnation is performed by using a method such as pressure injection, the strength of the laminated material is hardly improved, and the dimensional stability is also greatly improved. Not done.

Next, the method of circulating and recovering the thermosetting resin liquid r will be described in detail with reference to FIG. FIG. 10 shows a circulation path of the thermosetting resin liquid r. The thermosetting resin liquid r used in the impregnation treatment for increasing the mechanical strength of the reinforced laminate and obtaining the required water resistance needs to be controlled to the optimum temperature and pH at all times. This is because the weight percent concentration of the thermosetting resin liquid r with which the flat bulb 3 is impregnated depends on this temperature and pH. Further, the thermosetting resin liquid r with which the flat bulb 3 is impregnated is reduced by the impregnation, so that it must be constantly replenished.

The flat bulbs 3 are successively dipped into the thermosetting resin liquid r as the belt conveyor 36 driven intermittently is driven. The flat stalk 3 passes through the thermosetting resin liquid r for a certain period of time and then is conveyed to the raw material discharge chute 37 (FIG. 7). During this movement, the surplus thermosetting resin liquid r is collected by the overflow chute 33 as described above. The overflow chute 33 is fixed to the impregnator 31 so as to match the liquid level of the thermosetting resin liquid r. That is, overflow shoot 3
3 is a flat stem 3 is a chute 37 for taking out raw materials from the impregnating machine 31.
The excess thermosetting resin liquid r, which is fixed to the impregnator 31 below the passage that moves to, and adheres to the flat bulb 3 is collected. Moreover, the overflow chute 33 also has a function of collecting the overflowing liquid when the thermosetting resin liquid r replenished from the liquid injection port 38 is excessive. The thermosetting resin liquid r recovered by the overflow chute 33 is poured into the solution tank 34.

The thermosetting resin liquid r is injected from the liquid injection port 38, and the thermosetting resin liquid r in the impregnator 31 is discharged from the liquid discharge port 39.
And is stored in the solution tank 34. This liquid outlet 3
The thermosetting resin liquid r discharged from 9 is sucked up by the pump P1 to flow into the solution tank 34, or the liquid discharge port 39
The solution tank 34 is provided at a lower level so that the solution tank 34 naturally flows into the solution tank 34. The thermosetting resin liquid r is collected from the overflow chute 33 and the liquid discharge port 39 in the solution tank 34, and the thermosetting resin liquid r is further collected from the squeezing machine 41 described later.
The thermosetting resin liquid r collected and stored in the solution tank 34 is stirred by the stirrer 52 driven by the stirring motor 52a,
The pH of the solution is measured by the pH indicator 51 connected to the pH sensor 51a. At the same time, the temperature is detected by the thermometer t provided in the solution reservoir 301. The temperature of the solution in the solution tank 34 is controlled by the rubber heater 53 and kept at an optimum value. The pH value of the solution is the replenishment solution R (Fig. 7).
Is added to maintain the optimum value. The thermosetting resin liquid r in the solution tank 34 is pumped by the pump P2, the flow rate of the solution is controlled by the flow meter 54, and injected into the impregnating machine 31 from the liquid injection port 38. At this time, in order to more reliably stir the solution in the solution tank 34, the relief valve 55 is opened for a part of the solution pumped by the pump P2, and a part of the solution is constantly fed back to the solution tank 34. In this way, the temperature and pH of the circulating thermosetting resin liquid r are always controlled to the optimum values, and the impregnation conditions are maintained constant.

As shown in FIG. 13, the impregnated stalk 4 impregnated with the thermosetting resin liquid in the impregnator 31 is arranged on the impregnated stalk arrangement conveyor 32 which operates intermittently, and the impregnated stalk arrangement conveyor 3
A predetermined number is simultaneously supplied onto the squeezing machine supply conveyor 42 provided below the No. 2. This squeezing machine supply conveyor 4
The conveying direction of the impregnated stem 4 is changed by about 90 ° by 2 and a plurality of impregnated stems 4 are simultaneously conveyed to the next squeezing machine 41.

FIG. 14 shows the squeezing machine 41 and its peripheral equipment. The impregnated stalks 4 arranged on the impregnated stalk arrangement conveyor 32, which operates intermittently, are supported on the reversal receiving plate 43 until a fixed number of the impregnated stalks 4 are gathered, and when a fixed number of the impregnated stalks 4 are gathered. The support is released, and plural sheets are simultaneously supplied onto the squeezing machine supply conveyor 42 provided below the reverse receiving plate 43. The impregnated stalk 4 carried by the squeezing machine supply conveyor 42 is supplied to the squeezing machine 41 in parallel with the fiber direction.

FIG. 15 is a side view of the squeezing machine 41. The squeezing machine 41 includes a pair of squeezing rolls 44a and 44b which are flat rolls having no irregularities on the roll surface. In order to more reliably supply the impregnated stem 4 to the squeezing machine 41, an unillustrated supply roll having vertical grooves or horizontal grooves may be separately provided. The aperture roll 44a driven by the aperture roll drive transmission 45 is provided so as to be movable up and down, and the interval between the rolls 44a and 44b is adjusted at both ends of the roll so that the rotation shaft of the roll 44a is rotatably supported. Adjuster 44c
Have. The diaphragm roll 44b driven by the diaphragm roll drive transmission 46 is a fixed type, and the diaphragm roll 44b is a fixed type.
The excess thermosetting resin liquid r with which the impregnated stalk 4 is impregnated is squeezed out by allowing the impregnated stalk 4 to pass through at an interval adjusted with. The throttle pressure at this time is determined by the distance of the roll interval adjusted by the interval adjuster 44c.

Returning to FIG. 7, the excess thermosetting resin liquid r squeezed by the squeezing machine 41 is the same as the excess thermosetting resin liquid r obtained from the impregnating machine 31 through the overflow chute 33. It is collected in the tank 34. That is, as shown in FIG. 15, the thermosetting resin liquid r squeezed by the squeezing machine 41 is transmitted through the squeezing roll 44b, or is dropped as it is and the squeezing liquid receiving box 4 provided below the squeezing roll 44.
Recovered to 7. The recovered thermosetting resin liquid r is discharged from the liquid discharge port 47a, and the solution tank reducing pipe 48 shown in FIG.
And is returned to the solution bath 34. In this way, the flat impregnated stalk 5 from which the excess liquid of the thermosetting resin liquid r has been squeezed out by the squeezing machine 41 is sorted on the sorting table 49, and the stalk carrier 56.
And transferred to the next dryer 61. The conveyed flat impregnated stalk 5 is transferred to a moving pallet as described below in order to be supplied to the drying step 60.

FIG. 16 is a front view of the movable pallet 57. This moving pallet 57 is formed in, for example, a rectangular parallelepiped frame body for aligning and accommodating the flattened impregnated stems 5.
The movable pallet 57 has a plurality of hooks 59 arranged at four corners of the frame body at multiple intervals and a plurality of rods 5 that are detachably mounted on opposite hooks 59 on both sides.
8 and are configured to bridge and support the flat impregnated stalk 5 to be dried between the rods 58 facing each other. As shown in FIGS. 17 and 18, the hook 59 is formed in a substantially V shape, and one end thereof is attached to the inner side surface of the moving pallet 57 so as to support both ends of the rod 58 from below.
Two hooks 59 are needed to support one rod 58. This pair of hooks 59 is arranged so that the moving pallet 57 is orthogonal to the longitudinal direction of the rod 58 to be supported.
Are mounted at the same height position on the opposing frames of. Similarly, another pair of hooks 5 is attached to another opposite frame of the movable pallet 57.
9 is attached. By these attachments, two parallel and horizontal rods 58 can be supported. Hooks 59 are attached above and below the plane formed by the two rods 58 so that a plurality of similar planes are formed at equal intervals.

A plurality of flat impregnated stems 5 are arranged adjacent to each other on two rods 58 on the moving pallet 57 in order to efficiently accommodate the flat impregnated stems 5 and improve the air permeability in the drying process. , Form one layer. Also the moving pallet 5
The flat impregnated stalks 5 are accommodated in 7 so as to form a next layer with a space vertically provided. First, two rods 58 that are parallel and horizontal to each other are attached to the hooks 59 at the bottom of the moving pallet 57.
Is installed, and then a plurality of flat impregnated stalks 5 are juxtaposed in the direction orthogonal to the rods 58 so that both ends of the flattened impregnated stalks 5 are supported on the two rods 58. When all the flat impregnated stems 5 are arranged in parallel, the next rod 58 is installed on the hook 59 of the second stage at a certain interval above it. In this way, the flat impregnated stems 5 are sequentially stacked and the flat stalks 5 are moved to the moving pallet 5.
It is housed in 7. This rod 58 is constructed so that it can be pulled out in its longitudinal direction, and the flat impregnated stem 5 accommodated in the moving pallet 57 by pulling out the rod 58 after completion of drying.
Can be taken out at the same time.

As shown in FIGS. 19 and 20, the dryer 6
On the first roller conveyor 65, a moving pallet 57 for accommodating the flat impregnated stalk 5 is placed by a lift (not shown) so that the longitudinal direction of the flat impregnated stalk 5 is parallel to the transport direction. The moving pallet 57 has a hydraulic pusher (not shown) whose stroke corresponds to, for example, the length of one pallet.
It is pushed and moved by and is supplied to the preliminary drying chamber 62 which is the first drying step of the dryer 61. The dryer 61 includes a preliminary drying chamber 62, a high temperature drying chamber 63 and a medium temperature drying chamber 64, and the flat impregnated stalk 5 is dried in this order. That is,
The moving pallet 57 containing the flat impregnated stalk 5 supplied to the pre-drying chamber 62, which is the first drying step, is driven by being pushed by a hydraulic pusher (not shown) and passes through the pre-drying chamber 62 after a certain period of time. To do. At this time, if there is another pallet in front of the moving pallet 57, this pallet is also moved in conjunction with it. Similarly, the flat impregnated stem 5 is successively passed through the high temperature drying chamber 62 and the medium temperature drying chamber 63 to be dried.

Next, each drying chamber in the drying step 60 will be described in detail. In the preliminary drying chamber 62, which is the first drying process, preliminary drying is performed at a low temperature. That is, the flat impregnated stalk 5 impregnated with an appropriate amount of the thermosetting resin liquid r is gently cooled at a low temperature at a stage where the internal structure of the flat impregnated stalk 5 and the epidermis have a large amount of the thermosetting resin liquid r. To be dried. By this gentle drying, the temperature of the impregnating agent impregnated in the flat impregnated stalk 5 does not rise sharply, and the outflow of the impregnating agent due to the boiling phenomenon of water can be prevented. Furthermore,
Such gentle drying promotes penetration of the impregnating agent, and the impregnating agent can be efficiently dried while being absorbed in the flat impregnated stalk 5.

Next, the high temperature drying chamber 6 which is the second drying step.
In 3, the high temperature allows efficient drying. That is, by performing the high temperature drying in the high temperature drying chamber 63 after the low temperature drying in the preliminary drying chamber 62, the drying time of the material to be dried can be shortened. Usually, when the material to be dried has a certain amount of water or more, the energy required for evaporation of the water is first used to raise the temperature of the water. The energy responsible for the temperature rise of the moisture is efficiently applied in a short time by high temperature drying. That is, by rapidly applying latent heat of vaporization to the material to be dried, the drying time can be shortened, and moreover, since the material to be dried has latent heat of vaporization, it is possible to prevent an excessive temperature rise that causes the impregnating agent to heat-cure. . As described above, high temperature drying is desirable for efficient drying, but the drying temperature is usually set to a temperature range in which the material to be dried is not deteriorated.

Next, the medium temperature drying chamber 6 which is the third drying step.
In step 4, finish drying is performed at a medium temperature. That is, by the temperature drying in the high temperature drying chamber 63, the latent heat of vaporization of water in the material to be dried is ideally raised to the boiling point. At this time, finish drying is performed in the medium-temperature drying chamber 64 by slightly lowering the drying temperature in the medium-temperature drying chamber 64 before the rapid boiling phenomenon of water occurs or the heat curing of the impregnating liquid does not occur. By this medium-temperature drying, moisture remaining inside the stem or in the epidermis without being dried in the front two chambers is removed, and the impregnated stem is sufficiently dried. As described above, by changing the temperature with time in the drying process, the drying time can be shortened, and moreover, when the reinforced laminated material to be described later is subjected to the heat press molding, an excessive amount that causes adhesion failure can be obtained. You can surely remove the water.

Next, the flow of airflow inside the dryer will be described with reference to FIG. As shown in FIG. 20, the heater 66 that changes the temperature in the drying chamber generates a sufficient amount of heat to raise the temperature to an appropriate temperature required for each drying process. The air sucked in through the intake port 69 is supplied to the heater 66, and the air warmed by the heater 66 is
A circulation fan 67 provided above the heater 66 circulates in the drying chamber. First, the air sent from the circulation fan 67 is blown above the moving pallet 57 conveyed on the roller conveyor 65 from the air blowing port 68. The blown air passes through the moving pallet 57 and moves to the moving pallet 5
After passing through a punching metal (not shown) provided below 7, the air is exhausted by an exhaust fan (not shown). As described above, by allowing air to pass from directly above the moving pallet 57, the flat impregnated stalks 5 accommodated therein are reduced in variation due to turbulence of the air flow, and the flattened impregnated stalks 5 adjacent to each other are bonded to each other. Surely dried without

Here, the manufacturing process 130 of the wood single layer board will be described in detail with reference to FIG. FIG. 21 shows a wood single-layer board manufacturing machine 131 according to the manufacturing process of the wood single-layer board 145.
The wood single-layer board cutting machine 141 and its peripheral devices are shown. The log 135 which is a raw material is supported by the hooks 134 which are moved by the hook rails 137, and the cutting machine supply conveyor 1
32 is supplied to the cutting machine 13 by the conveyor 132.
3 is supplied. Log 135 supplied to the cutting machine 133
Is cut at both ends to an appropriate length required for processing, and is conveyed by the hook 134 onto the lathe supply conveyor 139. The log 135 is supplied to the rotary lathe processing machine 136 by the lathe supply conveyor 139. In this rotary lathe processing machine 136, the cylindrical log 135 is rotationally driven with its center position as the rotation axis. At the same time, the surface layer of the log 135 is cut into pieces with a constant thickness to form a continuous wood single-layer board. This continuous wood single-layer board cutting machine 147 is conveyed by the single-layer board cutting machine supply conveyor 138, and is sequentially supplied to the wood single-layer board cutting machine 141.

The continuous wood single-layer board 147 is cut by the cutter 142 into an appropriate length required for processing by the cutter 142 to form the wood single-layer board 145.
The wood veneer 145 is conveyed to the arranging table 146 by the arranging conveyor 143 and arranged on the arranging table 146. The wooden single-layer board 145 placed on the sorting table 146 is transferred to a wooden single-layer board carrier (not shown) and supplied to the dryer 61 shown in FIG. 19 to be dried. The wood single-layer board 145 formed as described above is dried in the drying step 60, and laminated on the sheet-like material 8 made of the dried stems 6 to complete a reinforced laminated material.

The step of forming a sheet-like material for forming each layer of the reinforced laminated material, that is, the stitching step will be described. FIG. 22 shows a lateral stripping machine 81 which is a suturing machine and its peripheral devices. Among the materials dried by the dryer 61, the dried stalk 6 impregnated with the thermosetting resin liquid and dried is the moving pallet 5
It is taken out from the dryer 61 while being placed on No. 7. A plurality of dried stems 6 are distributed to the upper layer sheet forming step 71, the middle layer sheet forming step 72, and the lower layer sheet forming step 73 in order to form a sheet. 6 dried stems for each process
Are aligned on the aligning conveyor 74 of the upper layer sheet forming step 71, the aligning conveyor 75 of the middle layer sheet forming step 72, and the aligning conveyor 76 of the lower layer sheet forming step 73. These conveyors 74 to 76 are driven by a sorting conveyor driving machine (not shown) and convey the dried stems 6 onto the lateral stripping machine entrance conveyors 77, 78 and 79, respectively.

The dry stems 6 on the horizontal stripping machine inlet conveyors 77 to 79 are successively supplied to the horizontal stripping machines 82, 83 and 84, respectively, where they are sewn at regular intervals. That is,
In order to prevent the plurality of dry stalks 6 arranged adjacent to each other from being dispersed or to improve workability, all the dry stalks 6 arranged are sewn with a thread or temporarily fixed with an adhesive tape or a rewetting tape. By doing so, they are bound together. The sheet-shaped flat stalk continuously sewn in this manner is cut into a predetermined length to be formed into a sheet-shaped material forming each layer of the reinforced laminated material.

Next, a lateral stripping step 80 for suturing the dried stem 6
With reference to FIGS. 23 and 24, the horizontal stripping process in the upper layer sheet forming process 71 will be described in more detail. As shown in FIGS. 22 to 24, the dry stalks 6 supplied by the lateral stripping machine entrance conveyor 77 have constant intervals on a conveyor conveyor 85, for example, a chain conveyor, which is intermittently operated by a conveyor conveyor driving device (not shown). It is placed vacant and supplied to the suture portion 86 of the lateral stripping machine 81. The dry stalks 6 are provided at a constant interval on the conveyor 85 in order to secure a space for expanding the pressed stalks in the flat direction in a pressing step 110 described later. If the space for this widening is not provided, when the pressure is applied in the pressure contacting step 110, some of the stems swell and the smoothness of the plate surface deteriorates.

In the lateral stripping step 80, a thread is pierced through each of a plurality of dry stalks 6 which are arranged in parallel with each other in advance, and the dry stalks are sewn to each other to form the dry stalks 7 of a predetermined number. Cut the sewn dry stalk 7 to obtain a sheet 8
Is obtained. That is, the epidermis of the dry stem 6 containing the wax component is slippery, a sufficient binding state cannot be obtained only by binding with a thread, and an interval is provided when binding with a tape or an adhesive. Is difficult. Therefore, a thread is pierced through each of the dry stems 6 and sutured.

The suture portion 86 to which the dried stem 6 is supplied is composed of a pressing conveyor 87, a piercing needle supporting device 88 and a piercing needle 89. The dry stalk 6 sequentially fed by the intermittent transfer conveyor 85 is pressed onto the conveyor 85 by a pressing conveyor 87 provided above the dry stalk 6. As a result, the pressed dry stalk 6 is reliably sewn with a constant interval without variation during suturing. A crochet needle supporting machine 88 driven by a crochet needle supporting machine driving device (not shown) is provided with a plurality of crochet needles 89, for example, four needles parallel to an arbitrary position, with their needle tips directed toward the stem, The suture thread necessary for suturing the dry stem 6 is passed through the tip of each needle. These crochet needles 89 are supported by a crochet needle supporting device 88 and moved up and down. The vertical movement of the lancet supporting device 88 sewes the dry stem 6 that is reliably pressed by the conveyor 87. That is, the transport conveyor 85
The dried stems 6 placed adjacent to each other are fed to the stitching portion 86 in the direction perpendicular to the fiber direction, and are sewn at four arbitrary points on the stem by the piercing needle support machine 88.

The dried stalks 6 are supplied to the sewn portion 86 at equal intervals, that is, at a predetermined number required to make one sheet, or at the minimum necessary intervals and sewn therein. . In order to separate the sutured dried stems 7 formed by stitching a predetermined number of dried stems 6 into a sheet-like material 8,
A relatively large space is provided between a predetermined number of suture dry stems 7. That is, the dry stalks 6 that are sewn at equal intervals or the minimum required intervals are arranged at a relatively small pitch up to a predetermined number, and a relatively large separation for cutting the suture is provided between the predetermined number of dry stalks 6. Is given a space for. The suture thread is knitted by the interlocking needle 89 penetrating between the dry stems 6, the surface of the dry stems 6 and the internal tissue of the stems, and a predetermined number of dry stems 6 are sutured. Since there is a portion where the crochet needle 89 penetrates the surface of the dry stem 6 and the internal tissue of the stem, when the dry stem 6 is sewn at a constant interval, the tension of the suture thread L is relaxed after the suturing, and the dry stem 6 is the suture thread. It is difficult to slip through L. Further, when a suture failure occurs, the suture L can be easily removed, and the removed dry stem 6 can be reused.

Further, regarding the method of suturing the dried stem 6, FIG.
Will be described in more detail. As shown in FIG. 25 (A), the crochet needle 89 fixed to the crochet needle supporting device 88 is driven by a driving device (not shown) to move up and down in a direction perpendicular to the traveling direction of the dry stem 6. This pin 89 is shown in FIG.
As shown in (B), the needle tip is formed so that only one suture L can be hooked when rising from the lowermost end. The suture L hooked by the lancet 89 is stretched on the dry stem 6 as shown in FIG. 24 (C) with the intermittent movement of the dry stem 6. When the crochet needle 89 is moved to the position to be sewn, the dry stem 6 is temporarily stopped, and the crochet needle 89 moves up and down while being pressed by the pressing conveyor 87 (FIG. 24). The suture L is disengaged from the needle tip when the spatula 89 is lowered, and the suture thread L provided under the dry stem 6 is hooked again as shown in FIG. 24 (D). The suture L hooked in this manner is newly stretched on the dry stem 6 as before when the crochet needle 89 is raised, and passes through between the stretched sutures in a loop. And stitched as shown in FIG. Similarly, when the dried stem 6 is conveyed to the next stitching position, it is once halted and then stitched. In addition,
The vertical movement position of the pin 89 is not limited to the position where the dry stem 6 exists, and may be the position where the dry stem 6 does not exist as shown in FIG. 24 (F).

Instead of the four needles shown in FIG. 23, only a pair of needles may be arranged as close as possible to both ends of the dry stem 6 to be sewn. If the dry stem 6 is sewn only with the pair of crochet needles on the outer side of the pressing conveyor 87, the sewn portion is cut off when both sides of the reinforced laminated material are cut and aligned by the vertical and horizontal cutting machine 121 (FIG. 31) described later. The suture thread used for suturing is removed from the completed reinforced laminated material to obtain a reinforced laminated material with no suture left.

As shown in FIG. 26, the sheet-shaped suture-dried stalk 7 sewn in a state where a fixed number of pieces are juxtaposed in this manner is conveyed to the cutting section 800 by the conveying conveyor 85 and cut. The cutting unit 800 includes a cutter 801 that cuts the sheet-shaped suture drying stem 7 into a predetermined length, and a cutter support that supports and fixes the cutter 801 so that its cutting edge is directed vertically to the sheet-shaped suture drying stem 7. Machine 802. When the cutter support machine 802 driven by a cutter support machine drive (not shown) moves up and down, and the cutter 801 moves up and down, a predetermined number of sheet-like suture drying stems 7
The suture in between is cut. As shown in FIG. 27, a predetermined number of dried sutured stalks 7 are cut into a sheet-like material 8 and conveyed by a sheet-like material unloading conveyor 803.

The cutting section 800 of the horizontal stripping machine 81 will be described in more detail. FIG. 26 shows a cutting portion 800 of the horizontal stripping machine 81, particularly a portion where the dried suture stalk 7 is cut. FIG. 26 (A) shows a state before the suture L between the predetermined number of suture dried stalks 7 is cut. A cutter supporting machine 802 driven by a cutter supporting machine driving device (not shown) has a pair of heaters 804 at positions sandwiching the blade surface of the cutter 801. Each of these heaters 804 is attached to the cutter support machine 802 via a heater support spring 805. Further, the heater 804 has a heater drive control device (not shown) for driving the heater 804 and an application mechanism 806 for applying a thermosetting agent. The thermosetting agent applied by the applying mechanism 806 is heated and hardened by the heat of the heater 804.

FIG. 26B shows a sheet-shaped suture dried stem 7
Shows the moment of disconnection. The transport conveyor 85 and the sheet-shaped article take-out conveyor 803, which are intermittently driven by a driving device (not shown), stop for a short time when the transported sheet-shaped suture drying stem 7 reaches the cutting position. The suture thread of the stopped sheet-shaped dried suture stalk 7 is cut according to the vertical movement of the cutter 801. Simultaneously with the cutting, the cut end of the cut suture L is clamped by the heater 804 and the heater pressure plate 807 provided below the heater 804. As a result, the cut end of the suture L clamped as shown in FIGS. 26C and 33 is heated by the heat of the heater 804,
The thermosetting agent 806 applied to the cut surface is heat-cured and the ends of the sutures are tied together.

When the cutting and tying operation is completed, the conveyer conveyor 85 and the sheet-like material take-out conveyor 8
03 is driven intermittently again, and the sheet 8 is conveyed by the sheet take-out conveyor 803. Further, the next predetermined number of sheet-shaped suture-dried stalks 7 arranged in parallel are transported to the next cutting position by the transport conveyor 85. In this way, the sheet-like material 8 obtained by cutting the dried sutured stalk 7 is formed in the shape of a blind with an interval by adjusting the interval between the high stalks. Further, although the upper layer sheet forming step 71 has been described here, the sheet-shaped material 8 can be similarly obtained in the middle layer sheet forming step 72 and the lower layer sheet forming step 73.

Further, the sheet-like material 8 of high stalks thus formed is laminated in a single layer or in multiple layers and thermocompression-molded in the production of the reinforced laminated material. By suturing the high stalk with the suture thread L to form a single sheet, the workability is improved and the work becomes easier. In addition, since the flat stalks constituting the sheet-like material 8 have various stem diameters from small diameter to large diameter, the surface of the sheet-like material formed by binding is uneven. In order to flatten the unevenness, that is, in order to uniformly apply the adhesive in the adhesive application step 90, it is flattened again in the second crushing step. At this time, the space provided between the flat stalks of the sheet-shaped material 8 is filled, so that the sheet-shaped material 8 does not bulge in the flat direction, and the sheet-shaped material 8 with high dimensional accuracy is obtained.

FIG. 28 shows the adhesive coating machines 91, 92 and 93 in the upper layer sheet forming step 71, the middle layer sheet forming step 72 and the lower layer sheet forming step 73, and their peripheral devices. The sheet-like materials 8 supplied from the horizontal stripping machine 82 in FIG. 22 are placed one by one on the adhesive applicator supply conveyor 94 in the upper layer sheet forming step 71, and the adhesive applicator 9
1 is supplied. Similarly, the sheet-shaped material 8 in the middle layer sheet forming step 72 and the sheet-shaped material 8 in the lower layer sheet forming step 73 are supplied to the adhesive applicators 92 and 93, respectively. Adhesive coating machine 9 for upper layer sheet forming step 71
In the adhesive applicator 93 in the first and lower layer sheet forming step 73, the adhesive is applied only to one side of the sheet-shaped material 8. Further, in the adhesive coating machine 92 in the middle layer sheet forming step 72,
An adhesive is applied to both sides of the sheet-like material 8. Alternatively, the adhesive may be applied to both sides of the sheet material in all steps.

As shown in FIG. 29, the sheets coated with the adhesive in this manner are supplied to the stacking step 100 by the stacking table supply conveyors 97, 98 and 99. FIG. 29 shows the stacking table 101, the pressure welding machine 111 and its peripheral devices. The upper-layer, middle-layer and lower-layer sheet-like materials 8 supplied by the stacking machine supply conveyors 97, 98 and 99 are stacked on the stacking stand 101 with the wood single-layer boards 145 supplied from the dryer 61. That is, when the sheet 8 and the wood single-layer board 145 are stacked on the stacking base 101, first, the wood single-layer board 14 to which no adhesive is applied is applied.
5 is placed in the bottom layer. Lower layer sheet forming step 7 thereon
The lower sheet material formed in 3 is turned upside down so that the adhesive application surface faces the lowermost wood single-layer board 145. The sheet material 8 of the middle layer formed in the step 72 of forming the intermediate layer sheet is stacked thereon so that the fiber direction thereof is orthogonal to the sheet material of the lower layer. The upper-layer sheet 8 formed in the upper-layer sheet forming step 71 is stacked thereon with its adhesive application surface facing upward and its fiber direction orthogonal to the intermediate-layer sheet. A wood single-layer board 145 on which the adhesive is not sprayed is stacked on it. Needless to say, an adhesive for adhering the wooden single-layer board 145 is unnecessary when the wooden single-layer board 145 is not laminated on the surface depending on the type of the laminated material. Eg 5
The laminate to be laminated on the layers is the pressure welding machine entrance conveyor 10
2 is moved onto the pressure welding machine 111 by this conveyor 102.
Be transported to.

In general, the sheet-like material 8 formed of high alum has sufficient mechanical strength in the direction orthogonal to the fiber direction of the high alum having sufficient mechanical strength. Not a thing. Therefore, in order to increase the mechanical strength in the direction orthogonal to the fiber direction in this way, a plurality of sheet-shaped materials 8 are alternately laminated so that the fiber directions thereof are orthogonal to each other, and a laminated material having sufficient strength in the vertical and horizontal directions is obtained. Manufactured. Further, from the viewpoint of workability and yield of high-yarn stems, it is desirable that each high-yield stems constituting the sheet-like material 8 be laminated so as to be orthogonal to each other. When the amount of the thermosetting resin liquid r impregnated in is small,
Alternatively, depending on the type of the thermosetting resin liquid r, the surface of the sheet 8 is coated with an adhesive and laminated.

Here, the adhesive used for superposing the sheet-like materials 8 will be described in detail. The adhesive used at this time may be a known one, for example, urea resin,
Examples include melamine / urea co-condensation resins, phenol / melamine resins, phenol resins, phenol / resorcinol resins, resorcinol resins, isocyanate-based adhesives including aqueous polymeric isocyanate adhesives, and tannin resins. When the above-mentioned resinous liquid of lignocellulose is used as the adhesive of the present invention, a high adhesive affinity with a high stalk can be obtained, and the adhesive performance of the sheet material 8 is improved. Also, the resinification liquid of lignocellulose is a portion other than the straight part of the high-capacity stem to be discarded, that is, when the leaf or hakama part of this high-capacity stem, or a bent part or an extra part is cut off. Since the cutting waste C that is taken out is melted and reused, the use efficiency of the high stalk can be increased, and the high stalk can be effectively used. The amount of the adhesive used is 1 to 50% by weight based on the total dry weight of the sheet-shaped material 8.
Is desirable. The amount of this adhesive used is 1% by weight
When the amount is less than the above, the mechanical strength of the laminated material is remarkably lowered, and when the amount used exceeds 50% by weight, the cost is remarkably increased as compared with the performance of the laminated material.

Next, the laminates stacked on the stacking base 101 are heated and hardened in the pressure contact step 110. If necessary, the superposed laminates are temporarily clamped, and the pressure welding machine 1
11 to 2 to 30 kg / c at a temperature of 50 to 250 ° C.
It is heated and compressed at a pressure of m ² . Further, as shown in FIG. 30, by arranging the spacer 103 at the time of pressurization, the pressurized laminate can be formed to a required thickness. Further, in order to increase the smoothness of the laminate or to obtain a more accurate thickness, the laminate is surface-treated with a scraper, a planer, a sander or the like, if necessary.

The laminate composed of, for example, 5 layers, which is pressed by the pressing machine 111, is singly or plurally arranged in the stacking direction, and plural solids are simultaneously pressed by the pressing machine 111. At this time, the thermosetting resin liquid r which is impregnated into the internal structure of the high stem in the sheet 8 by the impregnator 30.
Is exuded from the inside of the high stalk by the pressure due to the pressure contact when the laminate is pressed by the pressure contact machine 111, and the sheet-like materials 8 adhere to each other by the exuding thermosetting resin liquid r. Is promoted. That is, when the high-curd stalk is impregnated with the thermosetting resin liquid r from the cracks in the epidermis by the impregnator 30, the thermosetting resin liquid r easily penetrates the porous pulp of the epidermis and the core of the high-stem stalk. Penetrate evenly into the area. When the infiltrated thermosetting resin liquid r has sufficient water content, it is extruded from the high stalk by the pressing pressure of the pressure welding machine 111 and adheres to or is laminated on the surface layer of the high stalk. The sheet-like materials 8 are adhered to each other with a space therebetween.

In particular, when a liquefied liquid of lignocellulose or a resinized liquid thereof is used as the thermosetting resin liquid, a wide range of molecular weight components are produced in these by hydrolysis of lignocellulose, so that the pulp portion is Both the low molecular weight component and the high molecular weight component penetrate and are strongly strengthened. At the same time, the low molecular weight component penetrates into the inside of the skin layer to improve the strength of the skin portion. Further, the high molecular weight component forms a resin layer on the surface layer of the skin portion, and has an action of strengthening the skin portion and, at the same time, an action of adhering the sheet-like materials 8 to each other. Therefore, when using a liquefied liquid of lignocellulose or a resinified liquid thereof, while showing a superior enhancing effect than when using other thermosetting resin liquid,
The effect of reducing the amount of adhesive used during lamination or eliminating the use at all is also obtained.

When the sheet-like material 8 in which the high stalks are arranged in this way is laminated and thermocompression-molded, the adhesive applied to the sheet-like material is dried, and the thermosetting resin liquid r is cured to form a resin. By changing to a compound, a reinforced laminate can be obtained. The reinforced laminated material thermoformed in this manner is conveyed by the product unloading conveyor 104 and loaded on the product loading machine 105.

The laminated product which has been laminated and pressed is supplied to a vertical and horizontal cutting step 120 (FIG. 1) in which a product is measured to have a predetermined size. FIG. 31 shows the vertical / horizontal cutting machine 121 and its peripheral devices. The laminate loaded on the product loading machine 105 is transported by the product transport vehicle 106, and a plurality of products are taken out on the product taking-out section 122. The extracted laminates are supplied to the vertical cutting machine 124 by the vertical cutting machine supply conveyor 123 one by one or at the same time. The supplied laminate is in the shape of a substantially square prism, and a pair of facing sides, that is, a pair of facing parallel and equal lengths of a square are cut and aligned by a vertical cutting machine 124. The cut-and-aligned laminate is turned by a vertical cutting machine take-out conveyor 125 and a direction changer 126.
Transported on. The laminate whose direction is changed by 90 ° by the direction changer 126 is conveyed to the crossing machine 128 by the crossing machine supply conveyor 127. In the cross-cutting machine 128, the stack is trimmed in one set of sides that are cut and aligned in the vertical cutting machine 124 and in another set of adjacent sides.

The reinforced laminated material 9 thus formed by cutting the side faces of the regular square prism is aligned, while being conveyed by the selection conveyor 129 provided for quality inspection of the reinforced laminated material 9 and product selection. Quality inspection and product selection are performed. Here, the reinforced laminated material 9 as a product which has passed the quality inspection and is selected is loaded into the product loading machine 230,
It is shipped as a product through a packaging process (not shown).

Adhesive coating step 9 in the above-mentioned embodiment
0, the adhesive is applied to the sheet-shaped material 8 as shown in FIG.
However, as shown in FIG. 32, an applicator 151 having sponge-like rollers 151a and 151b may be used instead of this spraying. Further, before the adhesive is applied to the sheet-shaped material, the sheet-shaped material 8 may be crushed again in advance in order to improve the impregnation property of the sheet-shaped material 8 with the adhesive. That is, as shown in FIG. 32, a pair of crushing rollers 150a and 150b similar to the crushing machine 21 shown in FIG.
The crushing machine 150 having the above may be arranged in front of the coating machine 151. When the sheet material 8 is supplied to the crushing machine 150,
The sheet-like material 8 is crushed by the crushing rollers 150a and 150b to be flatter. The flattened sheet-like material 8 is forcibly forced by a crushing machine into a sponge-like roller 15.
It is pushed between 1a and 151b, where roller 151a
And 151b, the adhesive is applied, and another sheet-like material 8 is superposed on and under the adhesive as shown in FIG.

This laminated body has the above-described pressure contact step 110.
In the same manner, it is pressed and firmly adhered. 32 coating machine 1
At 51, the adhesive is constantly supplied to the sponge-shaped rollers 151a and 151b from the adhesive supply devices 152a and 152b, and the rollers 151a and 151b are deformed when the sheet-shaped material 8 enters, so that the sheet-shaped material 8 is deformed. Even if there are irregularities, the adhesive is surely and uniformly applied to the sheet-like material 8. Further, since the sheet-shaped material 8 is crushed and flattened before the application, the sheet-shaped material 8 can be more reliably
The adhesive is applied to. Therefore, the adhesive strength of the produced laminate is improved.

[0075]

As described above, according to the method for producing a reinforced laminated material and the apparatus thereof of the present invention, it is possible to inexpensively and semi-permanently supply, using a plant stem of a grass family such as a high stem, By using the plant stem as it is or by rolling it, the number of manufacturing steps can be reduced, and the manufacturing cost is low. Further, this apparatus has a plurality of manufacturing steps, and the high and low speeds of the respective manufacturing steps are kept constant so that products can be continuously manufactured, which is suitable for mass production. In addition, this device has a step of significantly improving the mechanical strength and dimensional stability of the reinforced laminate, and has a step of preventing swelling due to water, so that the reinforced laminate is extremely lightweight and suitable for various applications. A manufacturing method and a manufacturing apparatus thereof can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing a manufacturing process of a laminated material of the present invention.

FIG. 2 is a block diagram of a high-end stem cutting machine and peripheral equipment thereof according to an embodiment of the present invention.

FIG. 3 is a block diagram of a crusher for high stems of the present invention and its peripheral equipment.

FIG. 4 is a front view of the crushing machine.

FIG. 5 is a side view of the crusher.

FIG. 6 is a sectional view of a guide roll surface of the crushing machine.

FIG. 7 is a configuration diagram of a thermosetting resin liquid impregnation machine and its peripheral equipment according to an embodiment of the present invention.

FIG. 8 is a side view of the impregnating machine supply conveyor.

FIG. 9 is a configuration diagram of the impregnating machine.

FIG. 10 is a circulation system diagram of a thermosetting resin liquid including the impregnating machine.

FIG. 11 is a front view of the liquid level adjuster.

FIG. 12 is a side view of the liquid level adjuster.

FIG. 13 is a configuration diagram of an impregnated stalk organizing conveyor and a squeezing machine supply conveyor according to an embodiment of the present invention.

FIG. 14 is a configuration diagram of a squeezing machine and its peripheral devices according to an embodiment of the present invention.

FIG. 15 is a side view of the wringer according to the embodiment of the present invention.

FIG. 16 is a front view of the moving pallet according to the embodiment of the present invention.

FIG. 17 is a side view of a rod support portion of the movable pallet.

FIG. 18 is a front view of a rod support portion of the movable pallet.

FIG. 19 is a side view of the dryer according to the embodiment of the present invention.

FIG. 20 is a sectional view of the dryer.

FIG. 21 is a configuration diagram of a wood single-layer board manufacturing apparatus according to an embodiment of the present invention.

FIG. 22 is an overall configuration diagram of a suturing machine according to an embodiment of the present invention.

FIG. 23 is a perspective view of a main part of the suturing machine.

FIG. 24 is a side view of the suturing machine.

FIG. 25 is a side view showing in sequence the manner of suturing by the suturing machine.

FIG. 26 is a perspective view of a main part of a cutting part of the suturing machine according to the embodiment of the present invention.

FIG. 27 is a side view showing in sequence how to cut with the suturing machine.

FIG. 28 is a configuration diagram of an adhesive coating machine according to an embodiment of the present invention.

FIG. 29 is a configuration diagram of a superposing machine, a pressure welding machine, and peripheral equipment thereof according to an embodiment of the present invention.

FIG. 30 is an enlarged configuration diagram of the crimping machine.

FIG. 31 is a configuration diagram of a vertical and horizontal cutting machine according to an embodiment of the present invention.

FIG. 32 is a side view of a crushing machine and an adhesive coating machine according to another embodiment of the present invention.

FIG. 33 is a side view in which a sheet-shaped material coated with an adhesive by the adhesive coating machine is overlapped with another sheet-shaped material.

FIG. 34 is a side view of a flat stalk tied with an adhesive of a conventional example.

FIG. 35 is a side view of a flat stalk tied with a conventional tape.

FIG. 36 is a side view of a flat stalk tied with a conventional thread.

[Explanation of symbols]

1 ... High-grade stem (plant stem) 3 ... Flat stem 4 ... Impregnated stem 5 ... Flat impregnated stem 6 ... Dry stem 7 ... Suture dry stem 8 ... Sheet Object 20 ... Crushing step 21,150 ... Crushing machine (crushing means) 22a, 22b ... Guide rollers 23a, 23b ... Crushing roller 28 ... Chevron groove 30 ... Impregnation step 31 ... -Impregnation machine (impregnation means) 34 ... solution tank 53 ... rubber heater (thermosetting resin liquid temperature adjusting means) 57 ... moving pallet 58 ... rod 59 ... hook 60 ... Drying step 61 ... Dryer (drying means) 62 ... Preliminary drying room 63 ... High temperature drying room 64 ... Medium temperature drying room 67 ... Circulating fan (drying air supply means) 80 ... Horizontal Stripping process (stitching process) 81 ... Horizontal stripping machine (stitching device) 82, 83, 8・ ・ ・ Horizontal peeling machine (suture mechanism) 89 ・ ・ ・ Peeling needle (suture needle) 90 ・ ・ ・ Adhesive applying step 91, 92, 93, 151 ・ ・ ・ Adhesive applying machine 100 ・ ・ ・ Overlapping step 101 ... Laminating table (overlapping means) 111 ... Pressing machine (overlapping means) 150a, 150b ... Crushing rollers (crushing mechanism) 151a, 151b ... Sponge-like rollers (coating mechanism) 303. .. Liquid level adjuster (liquid level adjusting means) 801 ... Cutting cutter (cutting mechanism) 804 ... Heater (fixing mechanism) 806 ... Thermosetting agent (fixing mechanism) L ... Suture thread P2. ..Pumps (circulation means for thermosetting resin liquids) r ... Thermosetting resin liquids

Claims (23)

[Claims] 1. A crushing step (20) comprising crushing a plurality of plant stems (1) of the family Gramineae into flattened stems (3) having cracks along the fiber direction, and the flattened stem (3) Impregnated stem with impregnated thermosetting resin liquid (r)
Impregnation step (30) to obtain (4,5), and drying step (6) by drying the impregnated stem (4,5) to dry stem (6)
0) and a plurality of the dried stalks (6) are arranged at intervals, and a suture (L) is pierced through each of the aligned dried stalks (6) to form a sutured dried stalk (7), A stitching step (80) in which a number of sutured dried stems (7) is cut into a sheet-like material (8), and an adhesive applying step (90) for applying an adhesive to the surface of the sheet-like material (8) The plurality of sheet-shaped materials (8) coated with the adhesive are laminated by adhering the adhesive coated surfaces to each other with the dried stems arranged in different alignment directions, and pressing the laminate to form a plurality of sheets. A method for producing a laminated material, comprising a superimposing step (100) of superimposing sheet-like materials (8). 2. In the impregnation step (30), the flat bulb (3) is passed through the thermosetting resin liquid (r) at a constant speed for impregnation, and the height of the resin liquid surface is adjusted during impregnation. The method for producing a laminated material according to claim 1, wherein the impregnation time is adjusted by applying. 3. In the drying step (60), the impregnated stem is kept at a low temperature.
Pre-drying to dry (4,5), high temperature drying to dry the impregnated stem (4,5) at a temperature higher than the temperature of the pre-drying, and impregnation at a temperature intermediate between the temperature of the pre-drying and the temperature of the high-temperature drying. Stem
The method for producing a laminated material according to claim 1, wherein the intermediate temperature drying for drying (4,5) is continuously performed in this order. 4. In the suturing step (80), a small space is provided between each of a predetermined number of aligned dry stems (6), and a space between the predetermined number of aligned dry stems (6) is larger than the space. The method for producing a laminated material according to claim 1, wherein the suture thread (L) is sewn at a separation interval, the suture thread (L) is cut at the separation interval, and the suture thread (L) is tied. 5. The dried stems (6) aligned in the suturing step (80).
Stalks are intermittently transported to the suture location and aligned, and dry stems (6)
The method for producing a laminated material according to claim 1, wherein the suture thread (L) is sewn through the dried stem (6) when the stem is stationary. 6. The dried stems (6) aligned in the suturing step (80).
A first interval is provided between each of the stalks, and a predetermined number of aligned dry stalks (6) are intermittently orthogonal to the longitudinal direction of the stalks with a second interval larger than the first interval. The dried sutures (6) are conveyed one by one, and when the aligned dry stems (6) are stationary, the suture thread (L) is pulled out by the suturing needle (89) that moves up and down, and the aligned dry stems (6) are sutured ( L) bundled and suture dried stem (7)
The method for manufacturing a laminated material according to claim 1. 7. The suture thread (L) exposed at the second interval is cut, the cut end of the suture thread (L) is tied with an adhesive, and then the predetermined suture thread (L) is bound. The method for producing a laminated material according to claim 6, wherein the dried stems (6) arranged in number are separated to form a sheet (8). 8. The method for producing a laminated material according to claim 7, wherein the sheet material (8) is crushed and laminated to form a laminated material. 9. The adhesive applying step (90) comprises a crushing step for causing cracks in the dry stem (6) again along the fiber direction and applying an adhesive to the dry stem (6) in which the cracks are formed. The method for manufacturing a laminated material according to claim 1, further comprising: 10. A crushing means (21) for crushing a plurality of plant stems (1) of Gramineae into flat stalks (3) having cracks along the fiber direction, and said flat stalks (3) Impregnated stem with impregnated thermosetting resin liquid (r)
(4) impregnating means (31) for obtaining, and the drying means (6) to dry the impregnated stems (4,5) to dry stems (6)
1) and a plurality of the dried stalks (6) are arranged at intervals, and a suture is pierced through each of the aligned dried stalks (6) to form sutured dried stalks (7), and a predetermined number of sutures are sewn. A stitching means (81) for cutting the dried stem (7) into a sheet (8), and an adhesive applying means (91, 92, 93, 151) for applying an adhesive to the surface of the sheet (8). And a plurality of the sheet-shaped material (8) coated with the adhesive is laminated by adhering the adhesive coated surfaces to each other with the dried stems arranged in different alignment directions, and pressing the laminated body to form a plurality of sheets. And a stacking means (101, 111) for stacking the sheet-like materials (8) of FIG. 11. The crushing means (21) is configured so that the roller spacing can be changed in order to receive the plant stem (1).
(1) A pair of guide rollers (22a, 22b) for guiding the guide roller (22a, 22b
11. A pair of crushing rollers (23a, 23b) for crushing the plant stem (1) guided by b) to give a crack along the fiber direction of the plant stem to make a flat stalk (3). Manufacturing equipment for laminated materials. 12. The guide roller (22a, 22b) and / or the crushing roller (23a, 23b), at least one of which has a chevron groove (28) which is either a vertical groove or a lateral groove formed on the roller surface. Manufacturing equipment for laminated materials. 13. The impregnating means (31) is an impregnating time for adjusting the impregnating time by allowing the flat stalk (3) to pass through the thermosetting resin liquid (r) at a constant speed and adjusting the liquid surface height. Adjustment means
The laminated material manufacturing apparatus according to claim 10, which comprises (303). 14. The impregnating means (31) comprises a circulation means (P2) for circulating the thermosetting resin liquid (r) in the solution tank (34), a temperature of the circulated thermosetting resin liquid (r) and Means for adjusting pH (53)
14. The laminated material manufacturing apparatus according to claim 13, further comprising: 15. Drying means (61) is impregnated stalk at low temperature.
Pre-drying chamber (62) for drying (4,5), the pre-drying chamber (62)
At a temperature intermediate between the temperatures of the high temperature drying chamber (63) and the preliminary drying chamber (62) and the high temperature drying chamber (63) for drying the impregnated stems (4,5) at a temperature higher than 5) Medium temperature drying room to dry
The laminated material manufacturing apparatus according to claim 10, further comprising (64) in this order. 16. The drying means (61) has a mechanism for intermittently moving a moving pallet (57) on which the impregnated stems (4,5) are loaded, and a direction substantially orthogonal to the impregnated stems (4,5). From the pallet (5
7. A supply means (67) for supplying a dry air stream to 7).
The manufacturing apparatus of the laminated material of 0. 17. The movable pallet (57) faces a frame body formed in a rectangular parallelepiped shape, and a plurality of hooks (59) arranged at multiple corners at four corners of the frame body so as to face each other on both sides. Equipped with a plurality of rods (58) that can be pulled out for each hook,
The apparatus for producing a laminated material according to claim 16, wherein the impregnated stems (4, 5) are arranged to be supported between the rods (58) facing each other. 18. The stitching means (81) is an aligned dry stem (6).
A transport mechanism (85) for intermittently transporting to a suture location, and a suture mechanism for suturing the dry stem (6) so that the suture thread (L) penetrates through the dry stem (6) when at rest (82, 83, 84) and
The manufacturing apparatus of the laminated material described. 19. The transport mechanism (85) comprises a predetermined number of dried stems.
(6) are arranged at a first interval which is at least one less than the above number, and are intermittently arranged so that a second interval larger than the above interval is arranged between the aligned dry stems (6). The apparatus for manufacturing a laminated material according to claim 18, which conveys the laminated material to a container. 20. The suturing means (81) cuts the suture thread (L) exposed at the second interval and ties the cut end of the suture thread (L) with an adhesive, 20. The apparatus for manufacturing a laminated material according to claim 19, further comprising a cutting and fixing mechanism (801, 804, 806) for separating the dried sutured stems (7) bound by L) into a sheet-like material (8). 21. The suturing mechanism (82, 83, 84) comprises a suture needle (89) that moves up and down when the aligned dry stems (6) are stationary, and a suture needle that rises from below the aligned dry stems (6). The device for producing a laminated material according to claim 18, further comprising a suture thread (L) for binding the dried stems (6) drawn out by (89) and penetrating and aligned with the dried stems (6). 22. The apparatus for producing a laminated material according to claim 20, further comprising a crushing means (150) for crushing the dried stems (6) constituting the sheet-like material (8). 23. The adhesive applying means comprises a crushing mechanism (150a, 150b) for causing a crack again on the dried stem (6) constituting the sheet-like material (8) along the fiber direction thereof, and for generating this crack. 11. The laminated material manufacturing apparatus according to claim 10, further comprising a coating mechanism (151a, 151b) for coating the dried stem (6) with an adhesive.