JPS6278235A - Multilayered fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a multilayer fabric, more specifically, to construct a woven cam structure by interconnecting a plurality of laminated fabrics.
For example, the present invention relates to a multilayer fabric that can be used as a fiber material for composite materials such as FRP and FRM.

[Conventional technology]

Fabrics are one of the fiber reinforcement materials for composite materials.

For example, conventional woven fabrics as fiber materials for fiber reinforced resin (FRr') are generally made by using two woven fabrics, intertwining the threads that make up the woven fabrics as appropriate, and integrating the two-layered woven fabrics. They are bonded with adhesive to form a laminate fabric of a desired thickness. Alternatively, as other conventional examples, a fabric in which two layers of fabric are bonded using auxiliary fibers, or a multilayer fabric in which three or more layers of fabric are bonded with threads forming the fabric and integrated as a fabric layer. are also appearing.

However, the former laminated fabric made by bonding a plurality of fabrics with an adhesive is complicated to manufacture, and has problems such as peeling of the laminated layer and low shear strength.

On the other hand, the latter multilayer fabric using auxiliary fibers between multiple fabrics,
Alternatively, fiber materials for FRP that increase the number of fabrics and make multilayer fabrics solve the problems of delamination and shear strength, but require an amount of yarn proportional to the layer thickness, and reduce the weight and size of the fiber reinforcement material. There is a limit to the diversification of shapes, and the requirements for high-performance, multifunctional industrial materials have not yet been fully met.

[Problem that the invention seeks to solve]

Therefore, the present invention solves the above-mentioned problems of the prior art, is easy to manufacture, has high tensile strength and shear strength, and can be made lighter and larger, thereby meeting the demand for high performance and high functionality as an industrial material. The purpose is to provide a multilayer fabric that meets the following requirements.

[Means to solve the problem]

The multilayer fabric of the present invention for solving the above problem is made of a fabric of at least 4N, and includes a joint part (a) in which the inner layers of the fabric are connected to each other by threads constituting the fabric layer; A combination of a joint part (b) in which each layer is connected to the adjacent layer by the threads constituting the textile layer, and a non-joint part (C) in which each textile layer is independent from each other, creates a gap between the textile layers. It is characterized by forming a honeycomb structure.

The honeycomb structure has the above-mentioned unconnected part (C) and the connected part (
al and the connecting portion (bl).

The binding portion (11) and the binding portion (11) may be formed by each warp or each weft of two opposing layers of textiles to be joined interlacing with the weft or warp of the textile layer.

The combination of the above-mentioned connected part and non-connected part is the above-mentioned non-connected part (
C1 The above-mentioned connected parts (a++) the above-mentioned unconnected parts (C) may be circulated in the order of the above-mentioned connected parts (bl).

[Example and operation]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to drawings showing embodiments of the invention.

In FIG. 1A, the fabric of the present invention has four fabric layers 1 to 4.
It is made up of. Each of the fabric layers 1 to 4 is composed of the above-mentioned unbound part (C1), which is woven as an independent plain fabric, and includes an outer layer 1 of the fabric layers, an inner layer 2 and an outer layer 4 adjacent to the outer layer, and an inner layer 3 adjacent to the outer layer. The above-mentioned joint part (b) is formed by joining the warp yarns constituting each textile layer to the corresponding weft yarns, and the four textile layers 1 to 4 are woven as independent plain woven fabrics. By having the above-mentioned unbound part (C) and the above-mentioned joined part (a) formed by mutually joining the opposing inner layers 2 and 3 to the corresponding weft yarns with the weft yarns constituting each layer. It is integrated.

It is woven into shakumono and presented. Both the binding part (al) and the binding part (b) in FIG. 1A are the two textile layers to be joined to one weft above and below the two textile layers to be joined to every fourth weft. It is formed by intertwining the upper and lower warp threads of the fabric with their ups and downs reversed.The multilayer fabric shown in Fig. 1A is stretched vertically to clearly show the honeycomb structure formed by the fabric between the fabric layers. Fig. 2 shows a honeycomb shape in which the joined portions (a) and (b) are formed by one-point joining of warp and weft yarns, and the honeycomb shape is substantially quadrangular.

Figure 2A is similar to Figure 1A for 4H? - shows another embodiment of the multilayer fabric according to the invention, which is composed of fabric layers consisting of fabric; The above-mentioned joint part (a) and Tbl in Fig. 2A are also formed by interlacing the warp and weft yarns forming each fabric layer, as in Fig. 1A, but the joint part (a) and ( Both of b) are formed by consecutively connecting three weft threads with warp threads.

A honeycomb structure in which the multilayer fabric thus formed is stretched vertically is shown in FIG. 2B.

In this way, the honeycomb shape formed between the fabric layers by three-point joining becomes a hexagonal shape.

Since the length of the distance between the joints (al and bl) can be adjusted by increasing or decreasing the number of joints between the warp and weft of the 2N fabric involved in forming the joints, the honeycomb structure The honeycomb structure may be a modified hexagonal honeycomb structure depending on the purpose of use and the desired honeycomb shape, or may be a honeycomb structure consisting of a combination of quadrilaterals and hexagons.

There is no particular restriction on the length of the above-mentioned unconnected portion (C). By increasing the length of the non-binding portion (C1), a honeycomb-structured fabric with larger polygonal cavities can be formed, making it possible to provide a composite fiber material that is suitable for the demand for lightweight and large-sized units. By shortening the distance between the joints (C1), it is possible to provide a multi-N fabric as an industrial material with a dense and strong honeycomb structure.

The texture of the fabric constituting each layer of the present invention is not limited to the above-mentioned plain weave, and any fabric texture such as a twill weave or a satin weave can be selected.

The multilayer fabric of the present invention has at least four layers of fabric integrated,
Although honeycomb-shaped cavity rows are formed in the laminated cross section, the laminated thickness can be increased by increasing the number of laminated fabrics. Fig. 3A shows another embodiment of the present invention in which six fabric layers are integrated by forming a joint by warp binding, and Fig. 3B shows the six-layer fabric of Fig. 3A stretched vertically. FIG. Fig. 4A shows another embodiment of the present invention in which 12 woven fabric layers are integrated by forming a joined part by warp binding, and Fig. 4B shows the 12-layer woven fabric of Fig. 4A arranged vertically. It is expanded to reveal the laminated cross section of the honeycomb structure.

In the embodiment of FIGS. 3A and 4A, the connecting portion (
bl is an outer layer fabric 1 and an inner layer fabric 2 adjacent to the outer layer fabric 1
The following laminated fabrics 3 are connected to the adjacent fabric layers 4, and in this way, all the laminated fabrics are sequentially connected to the adjacent fabrics. In addition, the joint part (a) is the outer layer fabric 1 and 6 (Fig. 3A) and the outer layer fabric 1.
and 1λ (FIG. 4A), the inner layer fabrics are connected to the opposing fabrics.

The above-mentioned binding portions (a) and (b) can be formed not only by warp yarns but also by weft yarns constituting the woven fabric to be bound. FIG. 5 shows how the weft and warp intertwine when the weft forms a joint.

The method of combining the above joint parts (Jl) and (b) with the jointless part (C1) is to interpose the jointless part (C) and join the joint part (a).
) and (b) are repeated in sequence, as well as a non-joint part 10) ten joint part (b) ten joint part (C3 + joint part (b) non-joint part (C) It may be a joining pattern in which the ten joints (al) are combined in the order, or the desired joining pattern may be obtained by appropriately changing the combination of the joining parts.

The multi-layered fabric of the present invention can be woven simultaneously using, for example, a fly loom with multiple dobbies, a betier loom with multiple dobbies, etc., each having multiple shuttles on both sides.

When weaving a multilayer fabric by weft binding, a honeycomb-shaped cavity is formed in the longitudinal direction of the fabric between the fabric layers, but when weaving a multilayer fabric by warp binding, a honeycomb-shaped cavity is formed between the fabric layers in the width direction of the fabric. A honeycomb-shaped cavity is formed.

The material that can be used in the present invention may be any fibrous material, and includes, for example, natural fibers such as cotton yarn, synthetic fibers such as polyester and polyamide, carbon fibers, glass fiber plate metal wires, and the like.

The multilayer fabric of the present invention formed by the above structure is combined with resin suitable for the purpose such as unsaturated polyester resin and epoxy resin, metals such as aluminum and magnesium, ceramics, and inorganic materials such as concrete. It can be used in the legal field as an industrial material in the fisheries industry, etc., and as a medical material.

〔Effect of the invention〕

As explained above, the multi-pair fabric of the present invention is integrally formed by interlacing the warp (or weft) that forms the fabric between the laminated fabrics with the weft (or warp), so the amount of lamination can be reduced. Not only is it free of heat, but it also has high tensile strength and shear strength in the layer direction, and since it is a one-step manufacturing process, production efficiency is high. Furthermore, since the multilayer fabric of the present invention forms honeycomb-shaped cavities between the fabric layers by bonding the fabrics together, it is possible to manufacture a lightweight and large-sized honeycomb structure, and
On the other hand, by adjusting the number of textile tissue joining points, the joining interval, and the joining pattern, it is possible to realize a honeycomb structure that is dense and difficult to deform, and furthermore, a honeycomb structure having a shape suitable for the purpose.

[Brief explanation of drawings]

Fig. 1A is a weaving diagram of a four-layer fabric according to an embodiment of the present invention, Fig. 1B is a schematic diagram of Fig. 1A, and Fig. 2A is a weaving diagram of a four-layer fabric showing another embodiment of the invention. , FIG. 2B is a schematic diagram of FIG. 2A, FIG. 3A is a weave diagram of a six-layer fabric according to another embodiment of the present invention, FIG. 3B is a sectional view in the lamination direction of FIG. 3A, and FIG.
Figure A is a weaving diagram of a 12-layer fabric which is another embodiment of the present invention;
FIG. 4B is a cross-sectional view in the lamination direction of FIG. 4A, and FIG. 5 shows a four-layer fabric with weft binding, which is another embodiment of the present invention. 1.4.6.12... Outer layer of textile (outer layer textile), 2.
3... Inner layer of the fabric (inner layer fabric), a, b... Jointed portion, C... Unbound portion.

Claims (1)

[Claims] A woven fabric consisting of at least four layers, wherein the inner layers of the woven fabric are connected to each other by threads constituting the woven fabric layer, and each layer of the woven fabric constitutes the woven fabric layer with an adjacent layer. A multilayer fabric characterized in that a honeycomb structure is formed by a combination of a bonded portion (b) that is bonded by a thread and a non-bonded portion (c) in which each layer of the fabric is not bonded to each other. .