JPH02210054A - Production of wide warp and weft laminated cloth comprising yarn as weft - Google Patents

Abstract

PURPOSE:To obtain a warp and weft laminated cloth having weft arranged continuously at equal intervals at any pitch by providing weft with linearity in a free state by sizing, etc., and placing the weft from a conveyor circulating in the weft direction on a warp material. CONSTITUTION:Weft is heat-treated under tension or sized and provided with linearity in a free state, fed in a rowed state onto a lattice conveyor 9 and cut each fixed length to form a weft group 11. The weft group is placed on warp web 13 traveling in the warp direction, a continuous material 17 of weft in the weft direction is formed and the warp is bonded to the weft.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a wide fabric [11 warps! This is related to the manufacturing method of I-stack fabric.

[Conventional method and its problems] Wide Ill A wide rl obtained by sequentially stacking a wide weft web cut to that width on a warp web without any break and gluing the warp.
Since laminated nonwoven fabric is cheaper and stronger than woven fabric, it has come to be widely used as an alternative to woven fabric, either alone or as a reinforcing material for various stretching industries. provided the basic method in a prior patent, Japanese Patent Publication No. 53-38783. The basic idea is to apply a liquid to the surface of the warp web that runs horizontally at tjy, which corresponds to the width of the warp laminated fabric, and then apply it to the width of the warp web on a conveyor that intersects at a different height and circulates horizontally in the weft direction. Wide weft webs cut into corresponding lengths are placed on the conveyor at regular intervals, and each time each cut weft web comes to a position where it completely overlaps the warp material, the warp material is vertically moved instantaneously. After repeating the operation of contacting the upper cut weft web, adhering to it, transferring it, and separating it from the conveyor, a continuous body of the weft web in the warp direction is formed on the warp. This is a method of gluing them together to form a warp and warp laminated fabric.

Examples of webs include uniaxially stretched membranes, split webs thereof, reticular webs made by widening them, nonwoven fabrics manufactured by other methods with high strength in the warp direction, as well as spun filament yarns, flat yarns, split yarns, and glass 8a fibers. A large number of parallel yarns such as yarns, rovings, carbon fibers and yarns are used as warp and weft webs. As warp 1], the warp web itself or a circulation belt having a number 11 corresponding to 111 is used.The circulation conveyor in the weft direction is usually a lattice conveyor in which both ends of lattice bars arranged perpendicular to the direction of travel are connected to a chain. The section where the weft web is conveyed moves along a horizontal plane at a speed several percent faster than the feeding speed of the weft web, and the fed weft web is pulled by a slight tension due to the abrasion resistance of the lattice bar and cut by a cutter on the conveyor. , moving at the same speed as the conveyor.

The width of the cut weft web is always constant and it is placed on the conveyor with almost perfect flatness without wrinkles or irregularities, which is a necessary and essential condition for adhering to the warp material in an orderly manner and transferring it. It is.

Furthermore, it is clear that the width of the weft web 111 is as wide as possible, which is advantageous in terms of the production capacity of warp and warp laminated fabrics using this method.
When yarns are used as wefts, it is necessary to supply a large number of yarns in parallel over a wide width onto a conveyor.

The yarn is generally untwisted or untwisted, and is wound by traversing it onto a bobbin.The yarn pulled out from the bobbin is straight under tension, but when the tension is relaxed, ,
When the yarn is cut into a free state, it bends and twists due to the winding distortion and twisting stress that remain in the yarn, and as shown above, many yarns are fed in parallel onto the conveyor without treatment. However, when the yarn is cut and becomes almost tensionless, the shape and arrangement of the yarns become disordered due to the distortion generated in the individual yarns, and the above-mentioned conditions cannot be met at all.

In order to solve this problem, the present inventor created a separate invention entitled ``Method for continuously fixing the arrangement of threads'' in Japanese Patent Publication No. 51-9067.
This is the common name for connecting a large number of parallel threads in the horizontal direction with cotton threads made of hot melt glue. By manufacturing J separately and supplying it as a weft web, we can eliminate the disturbance of the yarns caused by cutting on the weft conveyor and produce a wide weft (r) with the yarns as wefts. I made it possible.

"Glue cloth" has the advantage that hot melt glue thread can be used as glue for warp and warp bonding, but the manufacturing equipment is expensive,
The occupied space is large, the distance between adjacent threads is limited to 10 mm or less, and the process is a separate process, which is disadvantageous in terms of production cost. The fact that the threads are connected in the horizontal direction to form a planar structure is that when the threads are cut on the conveyor and become tensionless, the difference in tension between the individual threads becomes a difference in the length of the threads. Some parts of the yarn become slack and swell up from the conveyor surface, and in the case of twisted yarn, the yarn at both ends curls, making it no longer flat, and the parallel width also changes. However, it has the disadvantage that it cannot fully satisfy the above conditions.

1. In the conventional method in which the "tube cloth" is used as the weft, even if the accuracy of the flatness of the lattice conveyor surface and the accuracy of the vertical movement of the warp belt are improved as much as possible, the warp and warp laminated fabric obtained has no wrinkles in the weft. At present, it is not possible to completely prevent the occurrence of defects such as bends or yarns at seams that are folded or too far apart after each transfer to a warp belt.

Furthermore, since hot melt glue has poor weather resistance and heat resistance and is flammable, there has recently been a desire for laminated fabrics that do not require the presence of hot melt glue.

r r! II Means to solve 8 points] Tree ili! Akihito et al. (as a result of experimental research, found that if the individual yarns are flattened as much as possible, and there are no distortions such as bending or twisting in a free state, for example, when cut and suspended, they can be cut on a conveyor. gllFt remains straight on the conveyor even if there is no tension
It can be done! 'it! ! The present invention was achieved by discovering that it is possible to transfer the weft threads straight to the warp belt and the warp belt by increasing the accuracy of the belt.

The gist is that in the manufacturing method of a wide-width warp laminated fabric in which a wide-width weft J is cut to a length corresponding to 111 of a wide-width warp web, and a warp is glued and fixed seamlessly on a warp web running on a wide-width warp web. During the feeding process, a large number of independent yarns are treated as a weft web under tension and treated with a protective coating or glue to give them straightness in a free state and connect them in the horizontal direction. The material is packed in parallel, fed onto a conveyor that circulates in the weft direction, cut into pieces at fixed lengths, and then transferred and cut onto a BtJ that runs 1 degree in the warp direction at a different height from the conveyor. After going through the process of forming a warp direction continuity 14 of the weft threads, the weft and weft threads are overlapped and fixed with adhesive.

&1! To form a longitudinal continuum of cut weft threads on a material, as mentioned above, apply a liquid to the surface of the warp material, and every time the cut weft thread comes to a position where it is free from the warp material, the warp material is momentarily vertically moved. What is necessary is to repeat the operations of moving it, bringing it into contact with the cut weft thread, transferring it to the warp material with a pestle, and pulling it away from the conveyor.

The parallel yarns fed onto the weft conveyor are individually independent yarns and have straightness, so even if they are cut, the parallelism 11 is always constant and the conveyor h has an almost perfectly flat shape. It is possible to completely satisfy the above-mentioned conditions of maintaining the warp material and adhering and transferring it to the warp material to form an orderly warp direction continuum of weft threads.

Further, the parallel pitch of the threads is completely arbitrary, and is not limited to lθaArR or less as in the sleeve cloth.

In the above method, a wide circulating belt with one mountain corresponding to the width of the warp web is used as the warp material, the warp web is run in close contact with the surface of the belt, and the cutting tF on the weft conveyor is used.
After adhering and transferring the weft threads to form a continuous body of weft threads in the warp direction, if the warp web is pulled away from the belt surface and the wefts are made to be tangent, it will be easier to transfer from the weft conveyor and separate it from the belt surface. A warp/warp laminated fabric can be obtained in which the yarn arrangement state of the weft yarn supply U is maintained without any disturbance in the shape or arrangement of the weft yarns.

In addition, a plurality of circulating belts arranged in parallel with a width corresponding to the width of the warp web are used as the warp material, and after the cut weft threads are attached and transferred to form a continuous body of the weft threads in the warp direction, the belts are By using a filament running in the warp direction at a speed different from that of the conveyor belt, the weft yarns on the conveyor can be separated one by one from the belt surface and overlapped with the warp web running at the same speed as the filament. It is possible to manufacture wide-width laminated fabrics by changing the parallel pitch to any pitch, and by feeding the weft threads in parallel as closely as possible and making the pitch coarse, it is possible to increase the production speed of tangible materials. becomes.

This is possible because the parallel threads supplied as wefts are independent threads, but it is technically impossible when "tube cloth" is used as wefts, and this is one of the advantages of the present invention. It is.

The yarns used as wefts are spun yarns that are aggregates of short fibers, multifilaments or heated yarns thereof, flat yarns (rovings), and flat yarns (rovings).
Stretched tape), split yarn, etc., and materials include thermoplastic and non-thermoplastic (organic or inorganic fibers, etc.)
It is broadly divided into

By heating thermoplastic yarn under tension, residual stresses such as bending and wrinkling are eliminated, and straightness in a free state can be easily imparted.

In particular, flat yarns made of polyethylene, polypropylene, and other thermoplastic resins are flat in shape, so the method of the present invention can be easily applied to them. If this is used in the warp and weft, the yarn can be easily and strongly bonded by pressurization after the α layer, and can be made into the most economically efficient and high quality wide-width and warp laminated fabric according to the present invention. Article.

Yarns made of non-thermoplastic inorganic fibers or organic fibers such as glass fibers or carbon fibers, or strongly twisted yarns even if they are thermoplastic, are pasted with an appropriate sizing agent, and the yarn is made into yarn under tension using the sizing agent. By solidifying the material, straightness is imparted in the free state.

At this time, it is easier to attach and transfer the yarn to the warp material by flattening the yarn with a pinch roll or the like and gluing it into a strip with a thickness of at least 3 times the thickness, which has the advantage of not causing bending. bring about.

Types of glue and processing methods include applying a melt of hot melt glue, or spraying powder and heating and cooling, as well as polyvinyl acetate, ethylene acetate picopolymer, polyacrylic acid, epoxy, and unsaturated glue. An effective method is to impregnate the material with a solution or emulsion of polyester or urethane glue, and then dry the solvent and moisture with hot air or hot rolls. Either type of glue can be used for adhesive bonding in the subsequent process, which is advantageous. It is a glue.

[Detailed explanation with drawings] An example of implementing the present invention will be described below with reference to the drawings.

In Fig. 1, a large number of independent yarns 1 drawn out from a creel frame 1 through warping 2 and a first pinch 1 call 3.3 are placed in parallel at a predetermined pitch and passed through a second pinch roll. A suitable tension q is obtained between 5.5゛ and heating 11-
During the process of passing through the cooling roll 7, if the yarn is a plastic flat yarn, it is simply heated and cooled to create a free form.
When the yarn is spun yarn, multifilament yarn, roving, etc., the binarr'1-rule; 3,
At 3 degrees, it does not flatten and at the same time melts the glue in the liquid tank 8, melts 1
The yarn is impregnated with α or an emulsion, heated with 1 coke 6 to remove the solvent, water, etc., and cooled with roll 7 to solidify the yarn, giving it true 1:1 properties.

The large number of yarns 4 that have passed through the pinch rolls at 5.5° are passed through a lattice conveyor 9 that circulates horizontally at a speed several percent faster than that speed.
The cutter 10 moves while being squeezed by the lattice bar, and the cutter 10 advances every 1°i by a length corresponding to the width of the red web from the position of the cutter 1 ( ) provided on the conveyor 9. The group 11 of a large number of weft threads that have been actuated and cut are moved at the same speed as the conveyor 9, and the circulation belt 12 and the Sutra web running in close contact with 13
Belt presser of 2Mi in the front and rear as shown in Figure 2 every time it comes to the overlapped position! ! L14.14' operates and the belt 12,
It is instantaneously moved up and down until it touches the cut weft thread group 11 on the conveyor.

At this time, the belt 12 and the warp web 13 are coated with water in the tank 16 or a water-soluble thickening agent iα in the form of a film using the kiss roll 15, and the cut weft thread group 11 of the conveyor is caused by its surface tension. It is attached and transferred onto the belt 12 and the warp web 13 between vA, and is separated from the conveyor surface and moved in the warp direction.

This operation is performed until the cut weft thread group 11 overlaps the belt 12.
After forming a warp direction continuum 17 of weft threads on the belt 12 and the warp J and web I3 by repeating this process every time the 7th position is reached, this is separated from the belt 12 by the warp web 13. Generally, the material is heated with a heating roller 18 and pressed with a rubber roll I9 to adhere the warp and warp layers, and then taken as a warp and warp laminated fabric 20.

12 is a wide belt with a width equivalent to the width of a cuff nib, and is treated by attaching a V-shaped belt body to both ears on the back side to prevent meandering and wrinkles. Prevent life.

FIG. 3 shows a method of making the parallel pitch of the weft threads arbitrary by using a multi-thread parallel belt 12 as a warp material.

In the figure, a longitudinal continuum 17 of weft threads, which is formed by being transferred onto a multi-strip belt 12, passes through the parallel spaces between the respective belts and is taken up by a filament 21 that is taken up at the same speed as the rolls 19 for one day. It is separated from the belt 12, passes below the lattice conveyor, and is sandwiched between the warp web 13 and the filament 21 introduced into the a-ru 18, making the speed of the bell 12 and the circumferential speed of the roll 18 different. This makes it possible to arbitrarily change the parallel pitch of the weft threads.

Example (1) ``113m'' composite with thin layers of low-density polyethylene on both sides
m 800 d high density polyethylene flat yarn 3
Arrange 21 pieces in parallel at a 1°6I port [11] at a 5mm pitch, heat them at 111'3°C under slight tension using soak-resistant pinch rolls as shown in i'EII71, cool them, and straighten them onto a lattice conveyor. It was fed at a speed of 40 m/min and cut into lengths of 1.3 m.

The cut flat yarn was straight without bending or twisting, and the parallel pitch warped by the comb on the pinch roll side was not distorted, and the parallel width was always constant every time it was cut.

rllll, one belt of 35tn thickness 21IIWa is circulated in the warp direction at a speed of 60m/min, and a 5m belt is
251 flat yarns similar to those described above, warped to 1.25 m at m pitch, were run in close contact with each other, the surfaces of the belt and yarn were wetted with an aqueous solution containing a W surface activator, and the surface was warped as described above. A warp direction continuous body of the cut flat yarn was formed on the top, and it was transferred from the belt onto a heated roll with a diameter of 2 m together with the warp flat yarn, heated to 115°C and pressed, and the warp and warp were fixed with adhesive to give a width of 1.2 m. Flat yarn diameter 8! 6 piles of scrap fabric were produced at a speed of 1 m/min.

This product is made of flat yarn made from traditional tube cloth and silk.
t t* M *Compared to the body, there was no overlapping of the weft flat yarns, there was no open space, and the lattice pattern had good ii:r linearity, and the product was excellent in FM adhesion strength and heat resistance.

Example (2) Monofilament of polyacrylic nitrile carbon fiber + lT
A thread consisting of tX 7 microns and 6,000 filaments is warped at a pitch of 40 mm, impregnated with epoxy emulsion, and pinch rolls are used to remove excess emulsion, simultaneously flattening the thread, and heat rolls with a surface temperature of 110°C are used. and fed onto a lattice conveyor.

In the warp direction, the same carbon yarn is also warped with 40+na+pitch, impregnated with the same emulsion, flattened, dried and supplied, and laminated with warp and warp in the same way as when wrapping the fruit. By heating with a ship roll at a temperature of 160°C, the curing reaction of the epoxy resin, which was insufficient, progressed! By gluing the wefts, we were able to manufacture a 40m + pitch pitch of mg lattice-shaped carbon fiber orthogonal to the weft and weft. Ta.

This product is for civil engineering and construction related concrete reinforcement! It had an effective function as 4.

[Effects of the Invention] As mentioned above, the present invention is based on the above-mentioned Patent No.
No. 30703 "Production method of 11-web laminated fabric J
Voru the yarn and the weft! II! ! Product If! The difference from the previous patent is that the feeding method has been supplemented and improved so that the straightness in the free state is 441f during the weft feeding process when producing the I fabric, which was previously impossible to do. A warp/warp laminated fabric in which straight weft threads are continuously and evenly spaced at any pitch, including weft thread parallel pitches of 10III11 or more! This invention is an effective invention that enables simple and high-speed production, and can be compared to an additional and improved invention that has effects that could not easily be obtained with the prior patent.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view in the weft direction of the weft supply section of the present invention and the laminated section when one wide circulation belt is used as the warp material, Fig. 2 is the longitudinal tM view, and Fig. 3 2 is a longitudinal sectional view similarly using a multi-thread parallel circulation belt. Explanation of main symbols l , ... ... ...3, 3'...
・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・
・ ・ ・ ・ 6.18 ・ ・ ・ 9 , ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・
・ ・ ・ ・ ・ 11, ・ ・ ・ ・ 12, ・ ・ ・ ・ 13, ・ ・ ・ ・ 14.14
・・・ ・・・ 15, ・・・ ・・・ 17, ・・・ ・・・ 2 ()
, ・・・ ・・・ 21, ・
・・・ ・・・ Creel 1st pinch roll Multiple independent threads 2nd pinch roll Heating roll Lattice conveyor cutter Cutting Weft thread group Circulation belt Warp web Belt presser Kiss roll Warp continuum of weft threads Warp n lamination Thread-like material for separating cloth

Claims (6)

[Claims] (1) In the manufacturing method of a wide-width warp laminated fabric in which a wide-width weft web cut to a length corresponding to the width of the wide-width warp web is layered seamlessly on the running warp web and the weft is fixed by adhesive bonding, a large number of wide-width weft webs are During the feeding process, the independent yarns are heat-treated under tension or pasted to give them straightness in their free state, and are arranged in parallel without being connected in the weft direction and circulated in the weft direction. The material is fed onto a conveyor, cut into pieces of fixed length, and transferred onto a running warp material in the warp direction at a different height from the conveyor, forming a warp direction continuum of weft threads on the warp material. A method for manufacturing a wide-width warp laminated fabric whose wefts are yarns, which is characterized by bonding the warp and warp through a process of (2) In claim (1), one belt having a width corresponding to the width of the warp web is circulated in the warp direction as the warp material,
The warp web is run in close contact with the belt surface, the cut weft threads are transferred thereto to form a continuous body of weft threads in the warp direction, and then the warp web is separated from the belt surface and the weft threads are bonded. A method for manufacturing a wide width laminated fabric using threads as wefts. (3) In claim (1), a plurality of belts arranged in parallel with a width corresponding to the width of the warp web are circulated in the warp direction as the warp material, and the cut weft threads are transferred and the weft threads are continuous in the warp direction. After the body is formed, the yarn is separated from the belt surface by a thread-like body that passes between each belt and runs in the warp direction at a speed equal to or different from that of the belt, and is overlapped with the warp web and bonded at the warp. A manufacturing method for wide-width laminated fabric. (4) In claim (1), a large number of yarns supplied as a weft web have a width of 3 in relation to the thickness of the yarn after being heat-treated or pasted to give straightness. A method for manufacturing a wide-width, warp-and-warp laminated fabric whose weft is a yarn whose weft is characterized by having a belt-like yarn having a length of at least twice as long. (5) In claim (1), each of the multiple yarns supplied as the weft web is an aggregate of multifilaments or short fibers, and is impregnated with a liquid (melt, solution, emulsion) adhesive. , A method for producing a wide warp laminated fabric whose weft is yarn, which is characterized by imparting straightness by removing solvents and moisture as necessary. (6) In claim (1), the plurality of threads supplied as the weft web are drawn flat yarns, and at least one side thereof is composited with an adhesive layer having a melting point lower than the melting point of the flat yarns. A method for manufacturing a wide-width, warp-and-warp laminated fabric whose wefts are yarns, characterized by imparting straightness through heat treatment.