JPH072194Y2 - Laminated cloth - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention is used as a base cloth embedded in a fiber-reinforced plastic (FRP) portion that constitutes blades for wind power generation, hulls of high-speed boats and fishing boats, skis, and the like. Or, it relates to a laminated cloth used as an interior material such as a blind or a wall cloth.

2. Description of the Related Art Conventional FRP products, such as windmill blades and skis, that require particularly strong strength in one direction, have glass yarns arranged in one direction as the base fabric, and the other direction. A woven fabric was used in which the yarns having a small thickness were used and the number of intersections was made as small as possible so that the fabrics were made to intersect with each other.

However, in the woven fabric having the above-described structure, the stability of the structure is poor, misalignment is likely to occur, and when cut, the form is deformed to cause poor workability in lamination and uniform workability. Physical property
There were problems such as difficulty in obtaining FRP products. It is also known that the crossing points are tightly tightened with a thread to prevent the misalignment and the shape collapse.
If the fixed part is strongly tightened, there are problems that the speed of resin impregnation is slow and that defoaming is difficult.

The present invention solves such a problem, and is suitable as a base fabric for FRP products, and has a stable structure and is free from misalignment and shape change during cutting, and has a high speed of resin impregnation and defoaming. The object is to provide a laminated sheet that can be smoothly processed.

Means for Solving the Problem In order to solve this problem, the present invention is to stack a plurality of cloths in which heat-fusible yarns are crossed on a large number of yarns arranged in parallel in a sheet shape. The cloths that are overlapped with each other are joined by heat-sealing the heat-fusible yarns. The present invention also provides a cloth formed by crossing a plurality of yarns arranged in parallel in a sheet shape with a heat-fusible yarn, and a non-heat-melting yarn formed in a large number of yarns arranged in parallel in a sheet shape. A laminated body is formed by laminating a cloth constituted by crossing adhesive filaments and joining the overlapping cloths by thermal fusion of the thermal adhesive filaments.

In the above structure, glass fiber, carbon fiber, aramid fiber, cotton fiber, polyester fiber or the like is used as the material of the yarns of the former laminated cloth and the latter cloth. As the heat-fusible yarn, copolymer nylon multifilament, spun yarn, low-melting copolymer polyester yarn, etc. are used. Further, as the non-heat-fusible thread, glass thread or thread made of carbon fiber is used.

When a plurality of cloths having heat-fusible yarns are laminated in a cloth made of the above material, the heat-fusible yarns of the cloths that overlap each other may be oriented in the same direction or are orthogonal to each other. You may cross in the direction of 90 degrees. Alternatively, they may intersect at any angle other than 90 degrees. The point is that the heat-fusible yarns of the upper cloth of the overlapping cloths are in contact with the lower cloth, and the heat-fusible yarns of the lower cloth are in contact with the upper cloth. Should be joined. Further, when laminating a cloth having a heat-fusible yarn and a cloth having a non-heat-fusible yarn, the heat-fusible yarn and the non-heat-fusible yarn of the cloths overlapping each other face in the same direction. , Or they may intersect in a direction orthogonal to each other at an angle of 90 degrees,
Alternatively, they may intersect at any angle other than 90 degrees.
The point is that the heat-fusible yarns of one cloth having the heat-fusible yarns of the cloths that overlap with each other are brought into contact with the other cloth, and the cloths that overlap with each other may be joined by heat-sealing.

By the way, when a plurality of cloths are laminated, the heat-fusible yarns are bonded by heat fusion. However, when the number of the laminated cloths is too large, heat is applied to the heat-fusible yarns. There is a problem that it is difficult to be transmitted, and that resin impregnation is not sufficiently performed in the subsequent process. Therefore, it has been found by experiments that the number of laminated cloths is limited to about six.

Further, in a laminated cloth comprising a laminate of the cloth having the heat-fusible yarn and the cloth having the non-heat-fusible yarn,
When the cloth having the heat-fusible yarn is A and the cloth having the non-heat-fusible yarn is B, the combinations shown in the following table are considered.

Although eight combinations are shown in the above table, many other combinations are possible. Further, in this combination, the yarns of the cloth do not have to be made of the same material for all of the laminated cloths, and may be selected according to the application.

FIG. 1 shows an example of the present invention, showing a state immediately before laminating and superposing a plurality of cloths, 1 is a large number of yarns arranged in parallel in a sheet shape, 2 is a yarn 1 In the case of laminating three cloths 3 as shown in FIG. 1 with heat-fusible yarns or non-heat-fusible yarns, all the three cloths include the heat-fusible yarns. Or the above table
You can choose from three combinations shown by b, c, and d.

Action With the above configuration, a plurality of cloths formed by intersecting the heat-fusible yarns are laminated on a large number of yarns arranged in parallel in a sheet shape, and the cloths that overlap each other are heated by the heat of the heat-fusible yarns. When a laminated cloth is formed by bonding by fusion, the heat-fusible yarns provided on each cloth are not limited to a large number of sheet-like yarns of the cloth, but a large number of sheet-like cloths that overlap the cloth. The yarns of the book can be reliably supported, the structure is stable, and a large number of sheet-shaped yarns do not separate or misalign, and the shape does not collapse even when cut, and the strength is high. It is large, and resin impregnation is fast, and defoaming can be done smoothly, and workability can be improved especially when manufacturing FRP products.

In addition, a cross formed by crossing a plurality of yarns arranged in parallel in a sheet shape with a heat-fusible yarn, and a non-heat-fusible yarn formed in a plurality of yarns arranged in a sheet shape in parallel. When a laminated cloth is constituted by laminating a cloth constituted by crossing the threads and joining the overlapping cloths by heat fusion of the heat fusible threads Not only a large number of sheet-like yarns of the cloth having the heat-fusible yarns but also a large number of sheet-like yarns of the cloth having non-heat-fusible yarns that overlap the cloth. The effect of being able to support the article at the same time is also obtained.

Example Hereinafter, an example of the present invention will be described.

A large number of yarns arranged in a sheet are made of glass roving.
2310 tex (diameter 22 μm; 2000) is arranged in parallel in a sheet shape with a density of 6.5 / 25 mm, and glass thread ECG75-1
/0-0.7Z 1 piece and copolymer nylon multifilament with a melting point of 100 ° C to 125 ° C (Flor M: Unitika Ltd.) 300
The heat-fusible yarns formed by ply-twisting with two denier yarns (S twist; 0.8 times / 25 mm) are crossed with a plain weave design at a density of 2 yarns / 25 mm. A plurality of cloths formed in this way are laminated, and the cloths that overlap each other are joined by heat fusion of the heat fusible yarns.

Further, twisted glass yarn may be used in place of the glass roving as a large number of yarns arranged in a sheet shape, or carbon fiber yarns may be used, in which case carbon fiber yarn 400 tex (diameter 7 μm 6000) may be arranged in parallel in a sheet at a density of 12.5 / 25 mm.

Further, as the heat-fusible yarn, a twisted glass yarn and a low melting point copolymer nylon multifilament was used, but spun yarn may be used instead of the copolymer nylon multifilament, and a low melting point. The copolyester yarn of No. 1 may be used, and a normal organic fiber yarn having a high melting point may be used instead of the glass yarn. As the low-melting heat-fusible yarns, in addition to the above, nylon, polyester,
A low-melting point component was placed in the yarn and the yarn coated with a heat-melting resin layer of polyolefin, polystyrene, polyvinyl chloride, poly (meth) acrylate, polyfluorinated ethylene, etc., and a high-melting point component was placed in the core part. Nylon-based, polyester-based, polyolefin-based core-sheath composite yarns may be used. In addition, the crossover of a large number of yarns arranged in a sheet and the heat-fusible yarns was performed with a plain weave design, but other fabrics such as twill weave, satin weave, and entangled weave may be used. The heat-fusible yarns may be overlapped and fused at right angles or at a predetermined angle to the yarns arranged in one side only or alternately on the front and back sides. The crossover density of the heat-fusible yarn is
The structure of the cloth is stable, the arrangement of the yarns forming the cloth can be secured, and the density is low as long as the shape of the cloth is not deformed when cut.

The above is a description of a cloth obtained by intersecting a heat-fusible yarn with a large number of yarns arranged in parallel in a sheet shape. However, when a non-heat-fusible yarn is used, the heat-fusible yarn is Instead, one glass thread ECG75-1 / 0-0.7Z may be used, or carbon fiber thread may be used. The cloth having the non-heat-fusible yarn is laminated with the cloth having the heat-fusible yarn to form one laminated body, and another cloth is laminated and used as shown in the table above. be able to.

As described above, according to the present invention, a plurality of yarns arranged in parallel in a sheet shape are laminated with a plurality of cloths formed by intersecting the heat-fusible yarns, and the cloths that overlap each other are formed. When the laminated cloth is formed by joining the heat-fusible yarns by heat-sealing,
The heat-fusible yarns provided on each cloth can reliably support not only a large number of sheet-shaped yarns of the cloth, but also a large number of sheet-shaped yarns of the cloth that overlap with the cloth. Stable, sheet-like yarns do not separate or misalign, the shape does not change even when cut, the strength is high, and the resin impregnation is fast and defoaming is also possible. It can be performed smoothly, and workability can be improved especially when manufacturing FRP products.

In addition, a cross formed by crossing a plurality of yarns arranged in parallel in a sheet shape with a heat-fusible yarn, and a non-heat-fusible yarn formed in a plurality of yarns arranged in a sheet shape in parallel. When a laminated cloth is constituted by laminating a cloth constituted by crossing the threads and joining the overlapping cloths by heat fusion of the heat fusible threads Not only a large number of sheet-like yarns of the cloth having the heat-fusible yarns but also a large number of sheet-like yarns of the cloth having non-heat-fusible yarns that overlap the cloth. The effect of being able to support the article at the same time is also obtained.

Further, the laminated cloth according to the present invention is used as a base cloth embedded in a fiber-reinforced plastic (FRP) portion that constitutes blades for wind power generation, hulls of high-speed boats and fishing boats, skis, and the like, or blinds and wall cloths. It is useful as an interior material.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a laminated cloth showing an example of the present invention. 1 …… Many yarns arranged in parallel in a sheet, 2 ……
Heat-fusible yarn or non-heat-fusible yarn, 3 ... cloth.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location D04H 3/04 Z 7199-3B 3/14 Z 7199-3B D06M 17/00

Claims (2)

[Scope of utility model registration request] Claim: What is claimed is: 1. A plurality of cloths, which are formed by intersecting heat-fusible yarns, are laminated on a large number of yarns arranged in parallel in a sheet form, and the cloths that overlap each other are heated by the heat of the heat-fusible yarns. A laminated cloth that is joined by fusion. 2. A cloth formed by intersecting a plurality of yarns arranged in parallel in a sheet shape with a heat-fusible yarn, and a non-heat-melted yarn formed in a plurality of yarns arranged in parallel in a sheet shape. A laminated cloth having a laminated body formed by laminating a cloth constituted by intersecting adhesive filaments and joining the overlapping cloths by thermal fusion of the thermal adhesive filaments.