JPH1121852A - Coatingly impregnated multiple fabric sheet for agriculture and forestry civil engineering construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the three-dimensional strength, dimensional stability and cushioning property by using a flat multiple fabric consisting of warps or wefts vertically arranged in a plurality of layers and wefts or warps braided with these warps or wefts as a base cloth, and providing a coatingly impregnated layer thereon. SOLUTION: A multiple fabric having at least one flat surface which consists of warps or wefts arranged vertically in at least two layers and wefts or warps braided with the above warps or wefts is used as a base cloth 1, and a coatingly impregnated layer 2 of natural rubber, butyl rubber, polyvinyl chloride or the like is provided thereon. This basic cloth is formed by braiding a monofilament or multifilament of natural fiber or synthetic fiber in double or triple, including polyester, polyamide, polyphenylene sulfide, polyethyl ether ketone and the like. As the used fiber, has a thickness of 100-1000 deniers, and a single fiber or single fiber-like matter having a thickness of 100-1000 deniers, or a diameter of 0.10-1.00 mm is used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coated impregnated multi-woven fabric sheet for agriculture, forestry and civil engineering construction, which is particularly excellent in three-dimensional strength, dimensional stability, buffering properties and water impermeability.

[0002]

2. Description of the Related Art Conventionally, water-impervious sheets, waterproof sheets, flooring materials and the like used for agricultural, forestry and civil engineering constructions are mainly vulcanized rubber sheets, soft vinyl chloride sheets, and high elasticity soft vinyl chloride sheets which do not contain a base cloth. , Polyurethane sheets and the like are used. These civil engineering waterproof sheets, waterproof sheets, and flooring materials have been studied for strength in the vertical and horizontal directions, that is, in the horizontal direction, but the strength in the vertical direction is not so much reinforced. Often, heavy objects are placed on this type of sheet, i.e., loads are applied from the vertical direction, so that its vertical strength must be increased. In other words, the three-dimensional strength must be increased.

[0003]

SUMMARY OF THE INVENTION The present invention is not limited to the strength in the horizontal direction, but also the strength against a load in the vertical direction.
It is an object of the present invention to provide a sheet for agriculture, forestry and civil engineering having excellent dimensional stability and cushioning properties.

[0004]

Means for Solving the Problems As a result of intensive studies, the present inventors have reached the following invention.

[0005] That is, the base fabric is a multi-layer woven fabric having at least one surface composed of a weft or a warp arranged in at least two layers above and below, and a warp or a weft woven with the weft or the warp, and having a flat surface. It is a coated impregnated multiple woven fabric sheet for agricultural, forestry and civil engineering, provided with an impregnated layer.

[0006] The above-mentioned base fabric is obtained by weaving monofilaments or multifilaments such as natural fibers and synthetic fibers into a double weave or a triple weave. The material of the fiber used is not particularly limited, but the adhesiveness with the water-impermeable material layer,
In consideration of flammability, melting point, etc., for example, polyester, moist heat resistant modified polyester, polyamide, polypropylene, polyethylene, polyvinyl chloride, polyvinylidene chloride, polyvinylidene fluoride, polyfluoroethylene, polyphenylene sulfide, polyethyl ether ketone, aramid, carbon And the like.
The fiber used may be a single fiber or a single fiber having a denier of 100 to 10,000 denier and a wire diameter of 0.10 to 1.00 mm. In addition to monofilaments, multifilaments and spun yarns obtained by dipping or coating a resin into single filaments can also be used.
Further, a nonwoven fabric or a felt-like one obtained by needles of these multiple woven fabrics can be used.

[0007] The mesh of the woven fabric can be varied in a wide range from 10 lines / cm to 200 lines / cm depending on the specific application.

[0008] The woven fabric as the base fabric of the present invention is a so-called multiple weave of double weave or more, in which the weave structure is an overlapping structure. For example, warp double weave, weft double weave, double weave, triple or more multiple weave, these are woven with the weft or warp and the weft or warp arranged in at least two layers above and below It is a woven fabric made of warp or weft. 2 to 8 show some typical superimposed structures as specific examples. In FIGS. 2 to 8, a circle indicates a warp or a weft, a black circle indicates a warp or a weft of a different material, and a horizontal line indicates a weft or a warp. Of course, the multiple weave used in the present invention is not limited to these.However, a weave in which irregularities appear on the surface, such as a bonded double weave or a ventilated weave, is used after being flattened by calender roll treatment on the surface. . FIG. 8 shows a needle felt type multiple weave. Furthermore, dimensional stability and deformation resistance can be improved by performing heat setting (heat setting) on the multiple woven fabrics.

As described above, the multi-layer weave in which at least one surface is flat in the present invention means that even if it is a multi-layer weave, the surface is flat like a plain weave, or even if it has irregularities, it is treated by calender roll treatment or the like. It refers to flattened fabrics and various woven fabrics woven with flat yarns.

[0010] The woven fabric serving as the base fabric of the present invention may be produced by the above-mentioned method, or the same net sheet material may be diverted. For example, papermaking equipment for a paper machine (long net, press felt, dryer canvas, etc.) is a multi-woven, flat surface with a width of about 2 to 10 m, a length of about 10 to 100 m, and a coarse mesh. At present, wastes from small to fine are discarded in large quantities, so if this is diverted to the present invention, it will be significant not only in terms of performance but also in effective use of waste.

The coating impregnated layer in the present invention has strength, flexibility, cushioning property, weather resistance, heat retention,
Considering flame retardancy, melting point, abrasion resistance, conductivity, etc., for example, natural rubber, synthetic rubber, butyl rubber, ethylene propylene rubber, chloroprene rubber, polyisobutylene, polymethyl methacrylate, rubber asphalt, chlor Examples of sulfonated polyethylene and synthetic resin systems include polyvinyl chloride, polyethylene, ethylene / vinyl acetate copolymer, polyurethane, polystyrene, high elasticity soft vinyl chloride, polyurethane / carbon, and thermoplastic elastomer.

The thickness of the sheet for agriculture, forestry and civil engineering construction can be changed in the range of about 0.2 mm to about 10 mm, depending on the thickness of the base fabric, depending on the specific application.

The method of impregnating the base impregnated layer with the coating impregnated layer includes knife coating, roll coating,
Although there are laminating and dipping, a coating method is particularly suitable.

FIG. 1 shows a typical example of the present invention in which a coating impregnated layer 2 is provided on both sides of a base cloth 1 having flat surfaces on both sides.

Since the base fabric of the present invention has at least one flat surface, the coating-impregnated layer is uniformly coated, the strength is uniform, and the base fabric is suitable for various uses. By forming small grooves such as lattices or diamonds or small circular protrusions on the surface of the coating impregnated layer, an anti-slip effect can also be obtained. In some cases, carbon black, metal fibers, or the like may be mixed into the coating impregnated layer to impart electrical conductivity or antistatic properties.

The sheet of the present invention can be used as a replacement source for a sheet conventionally used in the field of agricultural civil engineering and for new uses. Specific applications are described below.

(1) For agriculture: Sheets for drainage ditch, impervious sheets for reservoirs, waterproof sheets, etc. (2) For civil engineering: Circulating sheets for civil engineering, sandproofing sheets for harbors, impermeable sheets for river bank protection, conveyor belts for transportation (3) For construction: Soundproof mats, sheets and wall coverings, antistatic mats and sheets and wall bags, cushioning mats and sheets, roofing materials, waterproof sheets, shielding shutters

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on specific embodiments.

A waste dryer canvas (1.8 mm thick) of a fourdrinier paper machine is used as a base fabric, and the surface thereof is coated with carbon-containing butylene-based synthetic rubber as a coating impregnated layer by a roll coating method. An invention sheet was obtained. The above-mentioned dryer canvas is a multi-layered woven fabric having at least one flat surface and is originally good in dimensional stability. Even if the papermaking material is discarded due to its life, its dimensional stability and strength are sufficient for the use of the present invention. It is durable, and it is hard to be damaged by the flexibility of the coating impregnated layer and the rigidity of the multi-layered fabric even if it is sharply pressed by nails or glass pieces from the vertical direction due to the formation of the coating impregnated layer, It is a sheet with excellent strength.

[0020]

The sheet of the present invention has strength both in the horizontal direction and in the vertical direction, and the base fabric of multiple woven fabrics has dimensional stability, especially those subjected to heat fixing treatment have further dimensional stability. In addition, the coating impregnated layer has an excellent cushioning property, so that it is not cut off even by sharp pressing of a nail, a glass piece, or the like from a vertical direction, and does not break. That is, the sheet of the present invention has rigidity based on multiple weaves of fibers and flexibility based on the coating layer, and is a material that is also excellent in waterproofing and water shielding, and is extremely useful for agricultural, forestry and civil engineering construction. .

[Brief description of the drawings]

FIG. 1 is a schematic view of an embodiment of a sheet of the present invention.

FIG. 2 is a schematic view showing an example of a multiplex fabric used in the present invention;

FIG. 3 is a schematic view showing an example of another multi-woven fabric used in the present invention;

FIG. 4 is a schematic view showing an example of another multi-woven fabric used in the present invention;

FIG. 5 is a schematic diagram showing an example of another multi-woven fabric used in the present invention;

FIG. 6 is a schematic view showing an example of another multiple woven fabric used in the present invention;

FIG. 7 is a schematic view showing an example of another multiple woven fabric used in the present invention;

FIG. 8 is a schematic view showing another example of a multiple woven fabric used in the present invention.

Claims (6)

[Claims] 1. A base fabric comprising a multi-layer woven fabric having at least one surface composed of a weft or a warp arranged in at least two layers above and below, and a warp or a weft woven with the weft or the warp, and having a flat surface. A coated impregnated multiple woven sheet for agriculture, forestry and civil engineering, comprising an impregnated layer. 2. The coated impregnated multi-woven fabric sheet for agriculture, forestry and civil engineering according to claim 1, wherein the base fabric of the multi-woven fabric is double-woven. 3. The coating for agriculture, forestry and civil engineering according to claim 1, wherein a part of the weft and / or the warp of the multi-layer woven fabric as the base fabric is reinforced with PPS (polyphenyl sulfide) fiber or PEEK (polyethyl ether ketone). Impregnated multiple woven sheet. 4. The coated impregnated multi-woven fabric sheet for agriculture, forestry and civil engineering according to claim 1, wherein the multi-woven fabric as the base fabric is made of a single fiber (monofilament). 5. The multilayer impregnated woven fabric sheet for agriculture, forestry and civil engineering according to claim 1, wherein the coating layer is a layer having conductivity or antistatic property. 6. The coated and impregnated multi-woven fabric sheet for agriculture, forestry and civil engineering according to any one of claims 1 to 5, wherein the multi-woven fabric as the base fabric is a waste of paper making tools for paper making.