JPH02209516A - Cloth/elastic rubber composite material product - Google Patents

Abstract

PURPOSE:To provide a composite material product excellent in expanding/contracting property by laminating fiber product and elastic rubber or impregnating the former with the latter, wherein the fiber product consists of cloth, netting, etc., which is formed from a wind thread chiefly containing fibers of high strength synthetic resin and wound round a core spirally. CONSTITUTION:A main material 1 consisting of fibers of high strength synthetic resin such as alamide fiber and nylon fiber is wound spirally round a core 2 consisting of fibers with high stretchability, for ex. rubber or synthetic resin such as polyurethane fiber, and thus a wind thread 3 is formed. Then this wind thread 3 formed into a cloth so as to suit the ground foundation concerned 10, and a sack 20 is formed by using it together with elastic rubber compositely. This sack 20 is inserted into a small hole 11 provided in the ground 10, and fluid 30 is put by pressure into this sack 20 so as to enlarge the dia. of this small hole 11, and the hole wall 12 of the ground foundation 10 in contact with the sack 20 is compacted. Further a hole 13 is filled with sand, soil mortar, etc., to accomplish improvement of the ground foundation. This will provide a large amount of elongation and tensile resistance simultaneously to enable formation of an enlarged hole in compliance with the properties of the ground foundation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a composite product of textile products such as cloth and elastic rubber, and in particular, it relates to a composite product of a textile product such as cloth and elastic rubber. This invention relates to a product in which a textile product such as a cloth is formed from a thread wound spirally around the periphery, and a composite product of the textile product such as cloth and elastic rubber.

[Prior Art] Conventional textile products such as threads, ropes, cloths, etc., regardless of whether they are natural or artificial fibers, have inherent elasticity.

In addition, in order to meet the purpose of use, the durability, strength, etc. are improved by synthetic resin processing such as impregnation and lamination. Rubber products that are composites of textile products such as these cloths and elastic rubber are known.

On the other hand, crimping technology is known for thread materials.

Stretchability is improved due to the properties of the wavy fibers.

[Problem to be solved by the invention] However, in conventional composite products of textile products such as cloth and rubber (hereinafter referred to as composite products), although there are some differences in stretchability, it is difficult to This requires a corresponding increase in tensile force, and if the tensile force changes, it is difficult to maintain a constant amount of elongation. Additionally, as the tensile force changes, the shape and dimensions also change, often resulting in a loss of elasticity, and products designed to maintain elasticity have the disadvantage of losing strength, making it difficult to maintain both of these properties. This has been a long-standing issue. Also, if you look at this from the perspective of elasticity, when a normal composite product is subjected to a tensile force, it will not elongate at all, or even if it does elongate, it will exceed a certain tensile force, as shown in Figure 2 (a). It reached a point of surrender and was immediately ruptured. Furthermore, when the external force is relaxed, the material returns to its original shape along the broken line, but at this time, distortion remains and it exhibits a characteristic in which it does not return to its original shape.

In this case, the fiber portion primarily has a shape-retaining or reinforcing function.

In other words, traditional composite products.

- Large amount of elongation and large tensile resistance cannot be obtained at the same time.

■If the tensile force is not increased, a larger amount of elongation cannot be obtained.

■When molding into a specific shape, there is a lack of freedom in shape, dimensions, etc. when expanding or elongating the product. ■It restores its shape when the external force is relaxed, but distortion remains and it cannot return to its original shape. It was subject to restrictions such as .

[Means for Solving the Problems] The present invention aims to solve the above-mentioned problems, and also combines a textile product such as cloth that stretches with a small tensile force with elastic rubber, and has a high degree of freedom. The purpose of this product is to provide a composite product with elastic properties, and the main material is high-strength synthetic resin fiber, and the main material is wound in a spiral around a core material. , woven, knitted or twisted]
It is characterized by laminating a fiber product such as cloth, net, or rope with elastic rubber, or by impregnating the fiber product with elastic rubber. As a result, 1. Although the composite product of the present invention is basically a composite of rubber and a textile product consisting of a wound yarn mainly made of synthetic resin fiber, it does not stretch under a predetermined tensile force. , or it is possible to expand and contract, and if that force is exceeded, it will expand with a minute force,
Furthermore, it exhibits tensile resistance again when a certain amount of elongation is reached, and has excellent elasticity, returning to its original shape when the tensile force is relaxed.

[Function] The present invention will be explained with reference to the drawings regarding the basic structure of a composite product. Figure 1 shows the structure of the twisted yarn, where 1 is the main material, which is a high-strength synthetic resin fiber such as aramid fiber, nylon fiber, or polyethylene terephthalate fiber to bear high tension, and 2 is the core material. , a synthetic resin fiber such as a polyurethane fiber for imparting high elongation, or a high elongation fiber such as a rubber cord, which is wound spirally around the core material 2 to form a wound thread 3. is formed. The main material 1 used here is a medium thickness and relatively short material in (a), a thin material and medium length in (b), and the thickest material in (c).

The longest one is selected.

FIG. 2(b) is a qualitative graph recording the tensile force and elongation using the above-mentioned wound yarn 3 woven into a cloth material, and shows the first proof stress peak of the curve. The curve rises up to A due to the characteristics of the core material 2. When the core material 2 breaks here, the amount of elongation increases without applying any force, and during this period, the main material expands in a spiral shape, becomes almost straight, and reaches point B.

From this point on, the resistance of the main material 1 becomes noticeable and the tensile force is applied proportionally, thus revealing the function of the main material. The 0 point is the final proof stress peak, and here the main material 1 also breaks.

FIG. 3 shows another example of the structure of the winding yarn 3, in which two main materials 1 are used and twisted.

The winding directions are opposite to each other.

FIG. 4 shows an example in which a cloth 4 made of the wound yarn 3 of the present invention is used between two ordinary cloths 5 to elongate only the middle portion in an actual application.

In the figure, parts a and C are the normal cloth 5, and part b is the cloth 4 according to the present invention. ignores the difference in parts a and 0, and in part b, Q3 <<Q'.

FIG. 5 shows yet another application example. Parts a and b are two compositions of the fabric 4 of the present invention selected from among (a) to (e) shown in FIG. 1, and part 0 is the normal fabric 5. In this example, in the figure (2), first the a part of the weaker cloth 4 is expanded, and then the stronger cloth 4 is expanded, and in both parts, 121 << part a + 2. <<u'.

FIG. 6 shows the fabric 4 of the present invention shown in FIG. 1 (a) and (
An example of a configuration in which the winding yarns 3 of b) and (e) are used in various combinations to simultaneously obtain an arbitrary tensile resistance force with an arbitrary size and length is shown below. This is shown in a graph. In the figure, the first proof stress peak A is the second
Similarly to the figure, the position of the break in the core material 2 is shown. however,
It is also possible to eliminate the tensile force at peak A by deteriorating the core material 2 in advance. Peak I4 is (
The main material of a), peak M is the main material of (b), peak N is (C
) shows the location where the main material broke. Therefore, in this cloth 4, each composition winding thread 3 functions individually,
It is understood that the material is well suited for the purpose. By combining these cloths with elastic rubber by laminating or impregnating them, a composite product with flexible elastic properties can be obtained. In addition, the broken lines in the graph indicate each peak point (L, M, N)
This shows the shrinkage properties of the composite product when external force is removed.

[Example] Fig. 7 and Fig. 8 show an example in which a bag 20 is formed using the composite product of the present invention and applied to construction work in the order of steps.

Figure 7 shows the invention that was previously filed (Japanese patent application No.
007, the title of the invention is "Method for forming holes in the ground"), this is a process diagram showing the use of the composite product of the present invention, and this method is for forming holes 11 with a small diameter provided in the ground 10. , cloth 4
By inserting a bag body 20 made of elastic rubber and then pressurizing fluid 30 into this bag body 20 to enlarge it, the diameter of the small diameter hole 11 is enlarged, and the bag body 20 The hole wall 12 of the ground 10 that comes into contact with the ground is compacted, and then the enlarged hole 13 is filled with sand, soil mortar, etc.

This is to improve the ground or form an in-situ antibody 40. Here, as the bag body 2o, a thread suitable for the ground 10 is selected from among the winding threads 3 shown in FIG. 1, and is used in combination with elastic rubber.

In the figure, in (■), a small diameter hole 11 is first drilled in the ground 10. In step 2, the bag 20 is inserted into the small diameter hole 11. This bag body 20 has a length that reaches the bottom of the small diameter hole 11, and is provided with an injection port 21 for the fluid 3o at the upper end. In (2), since the fluid 30 was press-fitted into the bag 20 and the composite product became watertight, the bag 20 expanded, and as a result, an enlarged hole 13 was formed. In (2), the pressure of the fluid 30 is removed and the bag 20 is collapsed while injecting the filler 14 between the bag 20 and the hole wall 12, and in (2) the bag 20 is pulled out. At this time, the ground can be improved by filling the enlarged hole 13 with sand, soil mortar, etc. while replacing it with the filler 14.

FIG. 8 shows another construction example in which the composite product of the present invention is used as a bag body, in which a bag body 2OA made of the composite cloth 4 explained in FIG. 5 is used as the bag body. The hole 11 has a small diameter and is enlarged by partially changing the shape, dimensions, etc. The enlarged hole has an enlarged bottom part 41 at the lower end and an enlarged head part 42 at the upper end.
The figure shows a method of forming the structure to have the following properties.

The diameter expansion process is the same as the previous example, but as shown in (■), the degree of expansion of the bag body 20A is large at the upper and lower ends where the highly stretchable cloth 4 is used, and the expanded bottom part 41 and expanded head part 42 are The hole wall portion 12 is also formed in the same manner to form the hole-shaped hole-expanding body 40. 14 is a filler.

[Effects of the Invention] As described above, the elastic rubber product of the present invention has synthetic resin fibers as its main material, and a winding yarn made by winding the main material in a spiral around a core material is woven in a 1 m It is a composite product made by laminating fiber products such as fabrics, nets, feed, etc., and elastic rubber, or by impregnating the fiber products with elastic rubber. It is possible to simultaneously obtain an unprecedentedly large elongation amount and large tensile resistance, and it is possible to obtain an even larger elongation amount without increasing the tensile force, so it is possible to form an enlarged hole that corresponds to the properties of the ground. . Moreover, it exhibits characteristics such as a high degree of freedom in terms of shape, size, etc. Therefore, if this composite product is formed into a woven fabric, it can be greatly expanded and restored not only in one direction or perpendicular direction but also in one part or in stages, so it can be used not only for construction work but also for a wide range of areas. , its use will be developed for multifaceted molding, safety equipment parts, etc. Furthermore, materials such as synthetic resin fibers and elastic rubber are commonly available, and no special techniques are required for crimping or processing them into textile products, so they can be used to improve the usage of composite products. It can be said that this is an invention that brings about ground-breaking effects.

[Brief explanation of the drawing]

Fig. 1 shows the configuration of various winding threads of the present invention, and Fig.
The figure is a graph showing the relationship between tensile force, elongation amount, and shrinkage property, where (,) shows a conventional woven product, and (b) shows a cloth woven with the winding yarn of the present invention. Figure 3 shows another example of the configuration of the wrapped thread, and Figure 4 shows an example of an application in which a cloth made of wrapped thread and a normal cloth are used to achieve partial elongation. (1) Figure is enlarged. Before, (2) shows after enlargement, 5th
Figures (1), (2), and (3) similarly show other application examples.
Fig. 6 shows a graph corresponding to Fig. 2 of yet another application example designed to simultaneously obtain arbitrary tensile resistance force with arbitrary size and length, and ■ to ■ in Fig. 7 are FIG. 8 is a process explanatory diagram of an embodiment of the present invention, and FIG. 8 is a similar process explanatory diagram of another embodiment. 1... Main material, 2... Core material, 3... Winding thread, 4
···cloth. 5... Ordinary cloth, 10... Ground, 11... Small diameter hole, 12... Hole wall, 13... Enlarged hole, ]4
...Filling material, 20.20A...Bag body, 2]...Fluid inlet/outlet, 30...Fluid, 40...Pore expander, 4]・
... Enlarged bottom part, 42... Enlarged head part, A, B, C, L, M,
N... Yield strength peak Figure 1 Patent source Sumitomo Rubber Industries, Ltd. Figure 2 Figure 3 → 1 [fIU Figure 4 Figure 6 Excellent elongation

Claims (2)

[Claims] (1) The main material is synthetic resin fiber, and the main material is wound spirally around a core material to create textile products such as cloth, nets, ropes, etc. by weaving, knitting, or twisting them together. A composite product of cloth, etc., and elastic rubber, characterized by laminating the material and elastic rubber, or by impregnating the fiber product with elastic rubber. (2) The main material is high-strength synthetic resin fiber such as aramid fiber, nylon fiber, or polyethylene terephthalate fiber, and the core material is high-strength synthetic resin fiber such as polyurethane fiber or rubber string. A composite product of the cloth or the like according to claim 1 and elastic rubber.