JPH09112007A - Woody combined flooring and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability by applying the constitution that a peripheral member made of a plurality of thin plates laminated along a thicknesswise direction is laminated on both sides of a substrate made of a plurality of square timbers or plate materials arrayed in a breadthwise direction for forming a core plate, and a thin plate is laminated on one or both sides of the core plate. SOLUTION: A laminated structure made of a core plate 1, a thin plate 2 and a fancy plate 3 ensures a small change in dimensional change due to dryness and humidity, and further ensures freedom from warp or twist. A majority of the core plate 1 is made of a plate material 6, thereby providing strength equal to or above the strength of the conventional lumber core type. Also, a peripheral material 7 rabbeted with male and female rabbets 4 and 5 is made of laminated material with a plurality of this plates 21 laminated in a thicknesswise direction, thereby keeping the structure free from a crack due to nailing. Also, the specific gravity of the structure becomes smaller than the case of conventional plywood type. Furthermore, the thin plate 2 has a grain direction at right angles with the grain direction of the plate material 6 and a dimensional change due to dryness and humidity is all the more reduced. Thus, the structure becomes light and the strength thereof is improved. At the same time, cost is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wood composite flooring which is lightweight, has excellent strength, can prevent cracking of the tongue and groove due to nailing, and is extremely inexpensive, and a method for manufacturing the same. Is.

[0002]

2. Description of the Related Art Conventionally, as a wood composite flooring,
For example, as shown in FIG. 7, a plywood type in which circular peeling veneers 101 and 102 are laminated in the plate thickness direction, and a predetermined number of square or plate members 201 that are aligned and bonded in the width direction as shown in FIG. There is a lumber core type in which round peeling single plates 202 are laminated on both surfaces of the core material.

In the plywood type, generally, South Sea wood such as lauan wood is peeled off in a circle, and the peeled veneers 101 and 102 are cut into a predetermined size to form a round peeled veneer 10.
5 to 7 pieces of 1.102 are stacked in the thickness direction so that the grain directions are alternated vertically and horizontally, and they are adhered with an adhesive while applying pressure to a thickness of about 12 to 15 mm, a width of about 945 mm, and a length of 1.
After forming a plywood board of about 840 and laminating the decorative board 103 on at least one surface of this plywood board, it is cut into three pieces in the width direction and then four sides are tongue-and-groove processed to have a width of 303 mm and a length of 181.
It is manufactured by a method of making a product of 8 mm and further painting and finishing the decorative surface if necessary.

In the lumber core type, raw wood is cut into large pieces, dried and then subjected to double-sided plane cutting to regulate the plate thickness and appropriately cut in the longitudinal direction to remove defects such as knot holes. After that, a predetermined number of rectangular or plate members 201 obtained by sawing into pieces are arranged side by side in the width direction and bonded with an adhesive while applying pressure to form lumber cores. Each piece is cut into a circle and cut into a predetermined size. Each piece of a peeled veneer (turning veneer) 202 is stacked one on top of the other and bonded with an adhesive while applying pressure. After cutting to dimensions, four sides are tongue-and-groove processed, width 303 mm, length 1818
It is manufactured by a method of making a product of mm and further painting and finishing the decorative surface if necessary.

[0005]

The plywood type wood composite flooring has been used as a floorboard for a house for many years because it is a plywood and has little dimensional change due to dryness and humidity, and has no warping or twisting. It has been pointed out that the floor construction method described above does not always have sufficient bending and bending strength in the length direction.

[0006] Also, in order to produce a plywood of a certain quality, large diameter good quality wood is necessary, but the resource protection of the South Sea timber is social and
It has become increasingly difficult to obtain high-quality logs of large diameter after they have been taken up as an environmental issue, and alternative products are required.

Further, as described above, a large-diameter high-quality log is required to make a plywood of constant quality, and it is gradually becoming difficult to obtain a large-diameter high-quality log. Round peeling veneer 101 that is peeled and cut to a predetermined size
・ 102 is formed, and the circular stripping veneers 101 and 102 are oriented in the thickness direction so that the grain directions are alternated vertically and horizontally.
Since 7 sheets are stacked and bonded with an adhesive while applying pressure to form a plywood of a predetermined shape, the manufacturing process is complicated, productivity is low, and more personnel are required. As a result, the product is extremely It becomes expensive.

The lumber core type wooden composite flooring is lighter in weight and less expensive than the plywood type flooring, and is superior in strength, but the tongue and groove portion has a single grain direction. Therefore, there is a very fatal problem that the tongue and groove part is cracked when nailing.

The present invention has been made in view of the above technical circumstances and is lightweight, excellent in strength, and capable of preventing the tongue-and-groove portion from cracking due to nailing, and is extremely inexpensive. It is an object of the present invention to provide a wood composite flooring and a method for manufacturing the same.

[0010]

In order to achieve the above-mentioned object, a wood composite flooring according to the present invention has a substrate made of a predetermined number of squares or plates arranged in the width direction and arranged on both sides of this substrate. Further, it is characterized by comprising an edge member made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction, and a thin plate laminated on one or both sides of a core plate made of the substrate and the edge member.

Further, in order to achieve the above-mentioned object, the method of manufacturing a wood-based composite flooring of the present invention arranges a predetermined number of squares or plates in the width direction, and fits and / or bonds the squares or plates together to form a substrate. After forming a core plate by inserting and / or adhering an edge member made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction on both outer sides of this substrate to form a core plate, one side or both sides of the core plate It is characterized in that thin plates are laminated on.

Further, in order to achieve the above object, another method of manufacturing a wood-based composite flooring of the present invention is to arrange a predetermined number of squares or plates in the width direction, and fit and / or bond the squares or plates together. To form a core plate by fitting and / or adhering an edge member made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction on both outer sides of the substrate to form a core plate. A number of core plates are fitted and / or glued together to form a composite substrate, and
A thin plate is laminated on one side or both sides of this composite substrate.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the wood composite flooring of the present invention will be described in detail together with a detailed description of a method for manufacturing the wood composite flooring of the present invention and a detailed description of a method of manufacturing another wood composite flooring of the present invention. Explained.

First, the wood composite flooring of the present invention is
A substrate made of a predetermined number of square or plate members arranged in the width direction, that is, a lumbar is provided. The wood species of this timber or plate is not particularly limited, for example, it is also possible to use South Sea wood such as Lauan wood, but it is preferable to use a relatively excellent wood species such as birch, maple tree, poplar, particularly, It is preferable to use poplar from China, which is expected to provide a stable supply of low-price raw wood in the future.

The size of this square or plate is not particularly limited, and the plate thickness, width and length of the wood composite flooring to be manufactured and the thin plate laminated on both sides of this square or plate in the plate thickness direction. The thickness may be determined in consideration of the thickness and the thickness of the decorative sheet laminated on one side or both sides as necessary. For example, the length is about 1890 mm, the width is about 45 mm, and the sheet thickness is about 9.6 mm.

The method of manufacturing this square bar or plate is not particularly limited, and may be manufactured in the same manner as a conventional lumber core type square bar or plate. Specifically, after the raw wood is cut into large pieces, it is dried, and the plate thickness of this large piece (square wood or plate width) is regulated by double-sided plane cutting to remove defects such as knot holes. It can be obtained by cutting into a suitable size in the direction and then sawing into small pieces.

The square bar or plate may be a single member over the entire length thereof, but it is not always required to be a single member, and members having an appropriate length in the longitudinal direction may be added to the above predetermined length. For example, it may be about 1890 mm. However, in the case of adding members having an appropriate length in the longitudinal direction, it is preferable to add corner members or plate members by fitting and / or bonding in order to secure strength continuity above a certain level. This fitting includes, for example, tongue and groove joints.

In the wood-based composite flooring of the present invention, the above-mentioned substrate, an edge member which is disposed on both sides of this substrate and which is made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction, and the substrate and the edge member. And a thin plate laminated on one side or both sides of the core plate.

With this structure, it is lightweight and
In addition, it is excellent in strength, and can prevent cracks in the tongue and groove due to nailing, and it can be made extremely inexpensive.

By the way, the edge material used in the present invention is made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction so that the grain directions thereof are alternated vertically and horizontally. The occurrence of twisting is further prevented, and the reliability is extremely high, which is preferable.

Further, in the present invention, a predetermined number of square members or plate members, and a substrate and an edge member which are fitted and / or adhered to each other are easy to manufacture, and it is easy to obtain a highly reliable product. Therefore, it is preferable.

That is, in the wood-based composite flooring of the present invention, a predetermined number of square or plate members, and the substrate and the edge member are arranged in the width direction, and if necessary, they are fitted and / or bonded to each other. It is not essential for the present invention that the predetermined number of square members or plate members, and the substrate and the edge member are fitted and / or bonded to each other,
For example, the squares or plates may be arranged with a proper gap between a predetermined number of squares or plates. In this case, the gap between the square members or the plate members can serve as a heat insulating space or a sound insulating space.

However, from the viewpoint of increasing the strength of the wooden composite flooring, a predetermined number of square members or plate members, and the substrate and the edge member are fitted and / or adhered to each other to make the cross-sectional shape uniform and stress concentration. It is preferable to prevent the occurrence of the above and to ensure the overall strength.

When the squares or plates are not adhered to each other, the squares or plates are attached to both sides in the plate thickness direction,
That is, they are fixed to each other via thin plates laminated on both front and back surfaces.

Further, in the present invention, the one-sided or both-sided thin plates in which the grain direction is oriented in the direction perpendicular to the grain direction of the substrate have higher strength and further warp and twist occur. It is difficult and preferable.

In the wood composite flooring of the present invention,
A predetermined number of timbers or plate members are fitted and / or adhered to each other, and a predetermined number of timbers are
Or, a predetermined number of plate materials are butted and bonded at their joints, or male tongues and female tongues are formed at the joints, and the tongues are spliced together by fitting them together.
In this tongue-and-groove joint, the fitting and the bonding using an adhesive are used together, and this is also the case when the substrate and the edge material are fitted and / or bonded to each other.

By the way, the male tongue and the female tongue are formed by a known tongue and groove process after laminating thin plates on one or both sides of the substrate and the edge member, that is, the core plate. In the wood composite flooring of the present invention, when a decorative plate described later is provided, this tongue-and-groove processing may be performed before laminating the decorative plates or after laminating the decorative plates.

According to the wood composite flooring of the present invention,
Since it has a laminated structure consisting of a substrate and an edge material, that is, a core plate and thin plates laminated on one side or both sides thereof, it is possible to obtain an advantage that there is little dimensional change due to dryness and humidity and there is no warp or twist. Since most of the core plate, that is, the substrate is made of square or plate material, the strength is excellent, and the edge material to which the tongue and groove process is applied is formed by laminating a plurality of thin plates in the plate thickness direction. Since it is made of a laminated material, cracking due to nailing does not occur.

In the wood composite flooring of the present invention,
In particular, when a thin plate on one side or both sides is laminated on the core plate by intersecting the grain direction of these grains with the grain direction of the substrate, the grain direction of the thin plates on both sides is the grain direction of the square or plate material. It is possible to obtain the wood composite flooring of the present invention oriented in a direction perpendicular to the above, which further reduces the dimensional change due to dry and wet.

In the present invention, it is preferable that the above-mentioned wood-based composite flooring has a decorative plate laminated on one or both sides thereof because the commercial value is improved. in this case,
If necessary, the decorative surface of the decorative board may be painted and finished.

That is, in the wood composite flooring of the present invention, a thin plate can be laminated on one side or both sides of the core plate, or after that, a decorative plate can be further laminated on one side or both sides in the plate thickness direction. . With such a configuration, the aesthetic appearance is enhanced by the design such as the pattern and the color caused by the decorative plate. In this case, it is preferable to further enhance the aesthetic appearance by applying a coating finish with, for example, a transparent paint.

In the method for manufacturing a wood-based composite flooring of the present invention, a predetermined number of squares or plates are arranged in the width direction, the squares or plates are fitted and / or adhered to each other to form a substrate, and both sides of the substrate are formed. An edge member made of a laminated material obtained by laminating a plurality of thin plates in the plate thickness direction is fitted and / or adhered to form a core plate, and then the thin plates are laminated on one side or both sides of the core plate.

That is, from the viewpoint of increasing the strength of the wood-based composite flooring, a predetermined number of squares or plates are arranged in the width direction, and the squares or plates are fitted and / or adhered to form a base material. It is preferable because the shape is made uniform so that stress concentration does not occur and the overall strength is excellent.

Next, in the method for manufacturing a wood-based composite flooring of the present invention, an edge member made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction is fitted and / or fitted on both outer sides in the width direction of the substrate. To be glued.

The edge material is formed of a laminated material in which a plurality of thin wooden boards are laminated in the thickness direction so that the grain directions are alternated in the vertical and horizontal directions. This is preferable because warpage and twisting are less likely to occur.

In the method for producing a wood-based composite flooring of the present invention, the wood species of the timber, plate and edge material are not particularly limited, and the same wood-based flooring of the present invention can be used.

The method for producing the thin plate used for this edge material is not particularly limited. For example, as in the case of the thin plate used for the conventional plywood type wood composite flooring, the raw wood is peeled off and dried to a predetermined size. It can be obtained by cutting into. The thickness of each thin plate may be the same or different.

The edge material may be laminated by cutting a thin plate having a predetermined thickness into the width and length of the edge material in advance, but the number of cutting steps can be reduced to shorten the manufacturing time and reduce the cost. In order to achieve the above, it is preferable that a plurality of the thin plates are laminated in such a manner that the grain directions of the thin plates alternate in the vertical and horizontal directions, and the thin plates are formed in a predetermined size.

Here, the lamination means that an adhesive is applied to one side or both sides of a plurality of thin plates, and then the plurality of thin plates are stacked in the plate thickness direction and adhered to each other while being pressed.

The length of the edge member may be the same as the length of the square member or the plate member, for example, about 1890 mm. The width of the edge material may be larger than the height or depth of the tongue and groove process, and is, for example, 20 to 45 mm. Further, the plate thickness of the edge member may be the same as the plate thickness of the square member or the plate member, and is, for example, about 9.6 mm.

In the method for producing a composite wood flooring of the present invention, the predetermined number of squares or plates are fitted and / or adhered to each other, and rims are fitted and / or adhered to both outer sides of the obtained substrate to form a core. In forming the plate, after a predetermined number of square members or plate members are fitted and / or adhered to each other in advance, a method of fitting and / or adhering edge members side by side on both outer sides thereof, and a predetermined number of square members or plate members and edge members After arranging, a method of fitting and / or adhering a predetermined number of squares or plates to each other, and a method of setting and / or adhering edge materials, and a predetermined number of squares or boards or edge materials arranged in a predetermined order 1 Each of them may be sequentially embedded and / or bonded.

In these methods, a predetermined number of square members or plate members are fitted and / or bonded in advance to form a substrate, and then edge members are fitted side by side on both outer sides of the substrate and / or fitted.
Alternatively, it is preferable to adopt a method of forming the core plate by adhesion for the following reasons.

That is, according to this method, after a square or plate material having a mechanical strength larger than that of the edge material is fitted and / or bonded while applying a strong pressure in advance to form a substrate,
As a result of being able to bond the substrate and the edge material while arranging the edge material on both outer sides of the substrate and applying a slightly weak pressure to the extent that the edge material is not crushed, the edge material is prevented from being crushed and the substrate and the edge material are separated. It is preferable because they can be firmly adhered to each other.

In the method for manufacturing a wood-based composite flooring of the present invention, a thin plate is further adhered to one or both sides of the core plate composed of the substrate and the edge material. The tree species of this thin plate is not particularly limited, and may be the same tree species as the thin sheet used for the edge material or may be a different tree species. Further, the method for manufacturing this thin plate is not particularly limited, and for example, as in the case of a conventional plywood type round peeling veneer, the raw wood may be peeled off and cut into a predetermined size.

The dimensions of this thin plate are the thickness, width and length of the wood composite flooring to be manufactured, the thickness of the square or plate material and the edge material, and the thickness of the decorative board laminated on one side if necessary. It may be determined in consideration of the above. Specifically, for example, the length is about 1890 mm, the width is about 1305 mm, and the plate thickness is 1.3.
mm.

In the method for manufacturing a wood-based composite flooring of the present invention, the method of laminating thin plates on one or both sides of the core plate is not particularly limited. For example, the grain direction of this thin plate is the same as the grain direction of the substrate. You may laminate toward. However, in order to further prevent cracking of the thin plate or the decorative plate laminated on this surface and improve reliability, it is preferable to orient the grain of this thin plate in a direction intersecting the grain direction of the substrate. It is particularly preferable to orient in a direction perpendicular to the grain direction.

As a method of laminating thin plates on one or both sides of the core plate, the core plate is formed by previously fitting and / or adhering the above-mentioned substrate and edge material to each other, and then forming the core plate on one or both sides. A method of laminating thin plates at the same time or sequentially, and a predetermined number of the square members or plate members and edge members are placed one by one on one thin plate in order and fitted and / or adhered, and then the obtained substrate and edge A method of laminating the other thin plate on the exposed surface of the material can be mentioned, but it is recommended to adopt the former from the viewpoint of increasing productivity.

In this case, when laminating the thin plates on one side or both sides of the core plate, one thin plate may be used, but instead of this, a plurality of thin plates are laminated in the plate thickness direction so that the grain directions are alternated vertically and horizontally. It may be laminated on.

In the method of manufacturing a wood-based composite flooring of the present invention, a decorative plate is further laminated on the thin plate laminated on one side or both sides of the core plate. The lamination of this decorative board is
The thin plate may be laminated on one side or both sides of the core plate, or after the thin plate is laminated on one side or both sides of the core plate.

When the obtained wood-based composite flooring is provided with a decorative plate, the appearance can be improved due to the aesthetic appearance. The decorative plate is not particularly limited, but a known commercially available decorative plate may be used.

The wood composite flooring of the present invention further comprises:
It has male and female tongues formed on at least two sides, for example four sides, and these male tongues and female tongues are known in the art after laminating thin plates on one or both sides of the core plate. It is formed by a process of brushing. When the decorative board is provided in the wood-based composite flooring of the present invention, the tongue-and-groove processing may be performed before the decorative boards are laminated or after the decorative boards are laminated.

According to the wood composite flooring of the present invention,
Since it has a laminated structure of a core plate and a thin plate on one side or both sides, there is little dimensional change due to dryness and humidity, and there is an advantage that there is no warp or twist, and most of the core plate is a square bar or Since it is made of plate material, it has excellent strength, and since the edge material to which the tongue and groove process is applied is a laminated material in which multiple thin plates are laminated in the plate thickness direction, cracking due to nailing occurs. It will disappear.

In the method for producing a wood-based composite flooring of the present invention, in particular, when one or both thin sheets are laminated on the core plate by intersecting the grain direction of the grain with the grain direction of the core plate, As a result of being able to obtain the wood-based composite flooring of the present invention in which the grain direction of one side or both sides of the thin plate is oriented in the direction perpendicular to the grain direction of the core plate, the dimensional change due to dryness and moisture is further reduced, and the warp and twist are further improved. It is prevented.

The method for producing a wood composite flooring of the present invention,
Alternatively, in another method for producing a wood-based composite flooring of the present invention, it is possible to laminate a thin plate on one side in the plate thickness direction with a decorative plate at the same time as laminating the above-mentioned thin plates on both sides, or thereby, on one side. It is possible to obtain the wood-based composite flooring of the present invention in which the decorative boards are laminated. Further, according to the wood-based composite flooring of the present invention in which the decorative plate is laminated on one surface, the aesthetic appearance is enhanced by the design of the decorative plate, such as the pattern and color.

When the decorative plates are laminated, it is preferable to further enhance their aesthetic appearance by applying a transparent paint or the like for finishing.

Another method of manufacturing a wood-based composite flooring according to the present invention is to form a substrate by arranging a predetermined number of squares or plates in the width direction and fitting and / or adhering the squares or plates together. On both outer sides of the plate, there are fitted edge members made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction, and /
Alternatively, a core plate is adhered to form a core plate, and a predetermined number of core plates thus obtained are fitted and / or adhered to each other to form a composite substrate, and then a thin plate is laminated on one or both surfaces of the composite substrate. It is a thing.

That is, in another method for producing a wood-based composite flooring of the present invention, a core plate is formed from a square or plate material and an edge material in the same manner as in the above method, and a predetermined number of core plates thus obtained are used. Are fitted and / or adhered to each other to form a composite substrate, and then thin plates are laminated on one side or both sides of the composite substrate.

In another method for manufacturing a wood-based composite flooring of the present invention, the edge material is made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction such that the grain directions of the wood plates alternate in the vertical and horizontal directions. It is desirable for the same reason as the method.

By the way, the material of the core plate and the manufacturing method are the same as those described above, and in the method of fitting and / or bonding a predetermined number of core plates to each other to form a composite substrate, this fitting and / or Adhesion has the same meaning as described above.

In this way, a core plate having a desired size, that is, a composite substrate is obtained, and a thin plate is laminated on one or both surfaces in the same manner as in the above method. In this case, if desired, a decorative plate may be laminated on this thin plate in the same manner as in the above method.

In another method of manufacturing a wood-based composite flooring of the present invention, when a decorative plate is laminated on the surface of a thin plate laminated on the composite substrate, the decorative plate is laminated on the composite substrate,
The product may be used as it is, or the composite substrate may be cut into a desired size and a decorative plate may be laminated on the surface thereof to form a product. Alternatively, the decorative plate may be laminated on the composite substrate and formed into a desired size. It may be cut into pieces and made into products. In this way, when a decorative board is laminated on one surface or both surfaces of the wooden composite flooring in the same manner as in the above-described method, the decorative appearance of the decorative board can improve the appearance.
The decorative plate is not particularly limited, but a commercially available known decorative plate for floor may be used.

When laminating the decorative boards, the appearance may be further enhanced by applying a transparent paint or the like for finishing.

According to another method of manufacturing a wood-based composite flooring of the present invention, since the composite substrate has a structure in which thin plates are laminated on one side or both sides, the dimensional change due to dryness and humidity is small, and warpage and twisting occur. In addition, since the composite substrate is mostly composed of square or plate materials, it is excellent in strength, and the edge material to which the tongue and groove process is applied has a plurality of thin plates. Since it is made of a laminated material in which is laminated in the plate thickness direction, cracking due to nailing does not occur.

In another method for manufacturing a wood-based composite flooring of the present invention, in particular, when a thin plate on one or both sides is laminated on a composite substrate with the direction of the grain of the wood intersecting the direction of the wood of the square or plate. In addition, it is possible to obtain a wood composite flooring of the present invention in which the direction of the grain of the thin plate on one side or both sides is oriented in a direction perpendicular to the direction of the grain of the square wood or the plate material, and thereby the dimensional change due to dryness and moisture is further improved. Less.

[0065]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wood composite flooring and a method of manufacturing the same according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of a wood composite flooring according to an embodiment of the present invention. The wood composite flooring comprises a core plate 1, thin plates 2 laminated on both sides of the core plate 1, and a thin plate on one side. 2 and laminated decorative plate 3 and is finished to have a width of 303 mm, a length of 1818 mm and a plate thickness of 12 mm, and male tongue 4 and female tongue 5 are formed on the four sides by tongue and groove processing. ing.

In this case, the core plate 1 has, for example, a substrate composed of six plate members 6 arranged side by side in the width direction and bonded, and edge members 7 bonded to both sides in the width direction.

As the tree species of the plate material 6, poplar from China, which is expected to be supplied inexpensively and stably in the future, is used, and the plate materials 6 are bonded to each other by the procedure shown in FIG.

That is, as shown in FIG.
2C to obtain a large-scale plate material 11, and after drying the large-scale plate material 11, as shown in FIG. 2 (b), after the thickness is regulated by double-side cutting, As shown in the figure, in order to further remove defects such as the knot holes 13, the length is cut into an appropriate length, and thereafter, as shown in FIG. For example, by obtaining the small split plate member 12 shorter than 1890 mm and adding the small split plate members 12 in the longitudinal direction as shown in FIG.
The plate member 6 having a length of 90 mm is formed.

A mechanism for arranging the six plate members 6 in the width direction so that the joints of the small split plate members 12 are not connected to the adjacent joints of the small split plate members 12, and the joints of the small split plate members 12 by gluing and Adjacent plate members 6 are bonded to each other.

However, the plate member 6 can be formed of a single member over the length of the semi-finished product, for example, 1890 mm, but as described above, the small split plate member 12 cut into shorter than the length of the semi-finished product or the product is used. When replenishing, the yield of raw wood can be increased, which is advantageous.

The edge member 7 is, as shown in FIG.
For example, the raw wood 20 of Lauan wood is peeled off, dried, and then cut into a predetermined length and width to obtain a turning veneer 21 having a plate thickness of 3.2 mm. As shown in FIG. After applying the adhesive to one or both sides of the turning veneer 21 of the above, for example, three sheets are stacked with the grain directions alternately in the vertical and horizontal directions, and are bonded with the adhesive while applying pressure as shown in FIG. 3 (c). By doing so, for example, a plywood 22 having a length of 1890 mm and a width of 990 mm is formed, and thereafter, the plywood 22 is obtained by cutting the plywood 22 into a predetermined width, for example, 45 mm.

The substrate made of a predetermined number of plate members 6 and the edge member 7 thus obtained are, for example, the plan view of FIG. 4 or FIG.
As shown in the plan view, the composite substrates 9A and 9B are formed by arranging them in a predetermined order in the width direction and adhering them to each other. Here, the procedure for adhering the plate member 6 and the edge member 7 is not particularly limited, but in the present embodiment, 18 or 24 plate members 6 are preliminarily adhered to each other by 6 pieces to form a substrate, and this predetermined number, that is, 3 The edge members 7 are arranged between the substrates of the group 4 or the group 4 and on both outer sides thereof, and are bonded to each other with an adhesive to form the composite substrate 9A.
Alternatively, the composite substrate 9B is obtained.

According to this method, a predetermined number of plate members 6 having a mechanical strength higher than that of the edge member 7 are adhered to each other while applying a strong pressure in advance, and then, between the predetermined number of plate members 6 and both outer sides thereof. The edge members 7 can be arranged side by side, and a predetermined number of plate members 6 and the edge members 7 can be bonded to each other while applying a slightly weak pressure that does not cause the edge members 7 to be collapsed, thereby preventing the edge members 7 from being collapsed. At the same time, there is an advantage that the plate member 6 and the edge member 7 can be firmly adhered to each other.

Thereafter, as shown in FIG. 6 (a), for example, a raw birch tree is peeled off on both sides of the composite substrate 9A composed of the plate material 6 and the edge material 7, dried, and then dried to a predetermined length and width. ,
For example, a thin plate 2 made of a turning veneer with a plate thickness of 1.3 mm cut into a length of 1890 mm and a width of 990 mm and a commercial floor decorative plate 3 are laminated at the same time or one after another, and the wood shown in FIG. Obtain a semi-finished product of composite flooring.

In this case, the grain direction of each thin plate 2 is oriented at a right angle to the grain direction of the plate member 6, so that the direction in which the tensile strength of each thin plate 2 is high is the width direction of the plate member 6. Since it is directed to each of the thin plates 2 and the one-sided thin plate 2, the decorative plate 3 laminated on the thin plate 2 is prevented from cracking.

Furthermore, by cutting the semi-finished product of the wooden composite flooring at the center in the width direction of the intermediate edge member 7,
A semi-finished product of the wood-based composite flooring is obtained, and a male tongue 4 and a female tongue 5 are formed on the four sides of the semi-finished product of the wood-based composite flooring by known tongue-and-groove processing. Finally, a transparent paint is applied to the decorative plate 3. By applying and finishing, the wood composite flooring as the product shown in FIG. 1 may be obtained.

According to the wooden composite flooring thus obtained, since it has a laminated structure consisting of the core plate 1, the thin plates 2 on both sides, and the decorative plate 3, the dimensional change due to dryness and humidity is further reduced, The advantage that warping and twisting can be further eliminated is obtained, and since most of the core plate 1 is made of the plate material 6, strength equal to or higher than that of the conventional lumber core type can be obtained.

Here, a plywood type conventional example having a plate thickness of 12 mm and a lumber core type conventional example having a plate thickness of 12 mm,
This embodiment (plate thickness 12 mm) has a span of 700 m.
7k per 100mm width, with a load calculated as 3kg per 100mm width of the test flooring on a load bar placed perpendicular to the center of the span and supported by m.
The difference in deflection when a load calculated as g was applied was 3.3 mm in the conventional example of the plywood type and 3.0 mm in the conventional example of the lumber core type, whereas it was 2.8 mm in the example. That is a very favorable result.

Further, according to this embodiment, since the edge member 7 to be tongue-and-groove processed is made of a laminated material in which a plurality of thin plates 21 are laminated in the plate thickness direction, cracks caused by nailing are of the conventional plywood type. It does not occur in the same manner as in the example, and the specific gravity of the plywood type is about 0.6, while the specific gravity of the example is as low as about 0.45 and lightweight.

Further, in this wood-based composite flooring, the thin plates 2 on both sides direct the direction of the wood grain in the direction perpendicular to the direction of the wood grain of the plate material 6, so that the dimensional change due to dryness and humidity is further reduced.

[0082]

According to the wood composite flooring of the present invention, a substrate composed of a predetermined number of square or plate materials arranged in the width direction, and a plurality of thin plates arranged on both sides of the substrate and laminated in the plate thickness direction. Since the edge member made of the laminated material and the thin plate laminated on one or both sides of the substrate and the core plate made of the edge member are provided, the strength equal to or higher than that of the conventional example of the lumber core type can be obtained by the square member or the plate material. Since the edge material can prevent cracking due to nailing, it is also lightweight.
It is possible to solve the drawbacks of the conventional example of the lumber core type and the conventional example of the plywood type, such as being extremely inexpensive, and to provide these advantages.

Further, according to the method for manufacturing a wood-based composite flooring of the present invention, a predetermined number of squares or plates are arranged in the width direction,
A board is formed by fitting and / or adhering the square members or plate members together, and an edge member made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction is fitted and / or adhered on both outer sides of the substrate. After forming the core plate, the thin plates are laminated on one side or both sides of the core plate, so that this substrate and an edge member made of a laminated material arranged on both outer sides of the core plate and laminating a plurality of thin plates in the plate thickness direction. It is possible to obtain a wood flooring provided with a core plate made of (1) and a thin plate adhered to one side or both sides thereof, that is, the wood flooring of the present invention.

Further, according to another method for manufacturing a wood-based composite flooring of the present invention, a predetermined number of squares or plates are arranged in the width direction, and the squares or plates are fitted and / or bonded together to form a substrate. On both outer sides of this substrate, a core plate is formed by fitting and / or adhering an edge member made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction, and thus a predetermined number of core plates thus obtained are joined together. In addition to the effect of the method for manufacturing a wood-based composite flooring according to the present invention, the composite board is fitted and / or adhered to each other to form a composite board, and then one or both surfaces of the composite board are laminated. The wood composite flooring can be mass-produced efficiently and economically.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a wood composite flooring of the present invention.

FIG. 2 is an explanatory view of a plate material manufacturing method of the present invention.

FIG. 3 is an explanatory view of a method for manufacturing an edge material preferably used in the present invention.

FIG. 4 is a plan view of the composite substrate of the present invention.

FIG. 5 is a plan view of another composite substrate of the present invention.

FIG. 6 is an explanatory view of another manufacturing method of the present invention.

FIG. 7 is a cross-sectional view of a conventional plywood type example.

FIG. 8 is a cross-sectional view of a conventional example of a lumbar core type.

[Explanation of symbols]

 1 core plate 2 thin plate 3 decorative plate 6 plate material 7 edge material 9A, 9B composite substrate

Claims (10)

[Claims] 1. A substrate made of a predetermined number of square members or plate members arranged in the width direction, and an edge member made of a laminated material arranged on both sides of the substrate and having a plurality of thin plates laminated in the plate thickness direction,
A wood-based composite flooring comprising this substrate and a thin plate laminated on one or both sides of a core plate made of edge material. 2. The wood composite flooring according to claim 1, wherein the edge material is made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction so that the grain directions of the thin plates alternate in the vertical and horizontal directions. 3. The wood composite flooring according to claim 1 or 2, wherein a predetermined number of square members or plate members, and the substrate and the edge member are fitted and / or bonded to each other. 4. The wood composite flooring according to any one of claims 1 to 3, wherein the wood grain of one or both of the thin plates is oriented in a direction perpendicular to the wood grain of the substrate. 5. The wood composite flooring according to claim 1, wherein a decorative board is laminated on one surface or both surfaces of the wood composite flooring. 6. A predetermined number of square members or plate members are arranged in the width direction,
A board is formed by fitting and / or adhering the square members or plate members together, and an edge member made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction is fitted and / or adhered on both outer sides of the substrate. A method for producing a wood-based composite flooring, which comprises forming a core plate and then laminating thin plates on one or both sides of the core plate. 7. The method for manufacturing a wood-based composite flooring according to claim 6, wherein the edging material is formed of a laminated material in which a plurality of thin plates are laminated in a plate thickness direction so that the grain directions of the thin plates alternate in the vertical and horizontal directions. 8. A predetermined number of square members or plate members are arranged in the width direction,
A board is formed by fitting and / or adhering the square members or plate members together, and an edge member made of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction is fitted and / or adhered on both outer sides of the substrate. A core plate is formed, a predetermined number of core plates thus obtained are fitted and / or adhered to each other to form a composite substrate, and then a thin plate is laminated on one surface or both surfaces of the composite substrate. To produce a wood composite flooring. 9. The method for manufacturing a wood-based composite flooring according to claim 8, wherein the edging material is formed of a laminated material in which a plurality of thin plates are laminated in the plate thickness direction so that the grain directions of the thin plates alternate in the vertical and horizontal directions. 10. A decorative board is further laminated on one side or both sides of the wooden composite flooring obtained by the method for producing a wooden composite flooring according to any one of claims 6 to 9. To produce a wood composite flooring.