JPH1082485A - Shape-holding hose - Google Patents

Abstract

PROBLEM TO BE SOLVED: To weave a texture lightweight and excellent in flexibility by a loom on the market by forming weft out of compound into which high strength fiber and heat fusion fiber are drawn together, subjected to fiber heat fusion and integrated. SOLUTION: Synthetic fiber yarn is sued as warp 13, in the case of a shape- holding hose of norminal count 75, 264pcs of polyester span yarn 10s/10 are sued, and one of polyester span yarn 10s/10 is used. A high strength fiber 15 of carbon fiber or aramidfiber, and heat fusion fiber 16 of a polyamide system (nylon) or a polyester system are used, and the cross section shape of the weft 14 is made in a condition in which the high strength fiber 15 and the heat fusion fiber 16 are mixed. While heating them to 100 to 220 deg.C, the heat fusion fiber 16 is fused, and welded to the high strength fiber 15. After that, they are cooled into one compound fiber yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube layer lining at least inside a tubular jacket obtained by weaving a warp yarn and a weft yarn, such as a suction tube for a fire hose and a shape-retaining hose for an indoor fire hydrant. The present invention relates to a shape-retaining hose which always maintains a substantially circular cross section.

[0002]

2. Description of the Related Art As a conventional hose, a jacket hose in which a lining layer of rubber or synthetic resin is provided on the inner surface of a jacket in which fibers are woven in a tubular shape. That is, a warp yarn made of a fiber and a weft yarn made of a metal linear body are woven in a cylindrical shape, and a lining layer of rubber or synthetic resin is applied inside the jacket.

That is, in the conventional hose, the warp yarn constituting the jacket is a yarn formed by burning a plurality of polyester spun yarns, and the weft yarn is woven in a tubular shape using a steel wire or a synthetic fiber filament yarn. Things.

[0004]

However, since the conventional shape-retaining hose uses a steel wire or a synthetic fiber filament yarn for the weft, it retains a cylindrical state even when the hose is bent. In order to weave a steel wire as a weft with a warp or a synthetic fiber filament yarn as a whole, a special loom for weaving the steel wire or the synthetic fiber filament yarn is required, which causes an increase in cost. Has become.

[0005] The present invention has been made in view of the above-mentioned circumstances, and the object thereof is to provide a lightweight, excellent flexibility, and eliminate the need for a special loom for weaving steel wire or synthetic fiber filament yarn. An object of the present invention is to provide a shape-retaining hose that is easy to manufacture.

[0006]

According to the present invention, in order to achieve the above-mentioned object, a lining layer is provided at least inside a jacket in which a warp yarn and a weft yarn made of synthetic fiber are woven in a cylindrical shape. The shape retaining hose is characterized in that the weft is formed of a composite fiber obtained by integrating high-strength fibers and heat-fused fibers or by twisting and heat-fusing them together.

[0007] A second aspect of the present invention is a shape-retaining hose in which a lining layer is provided at least inside a jacket in which a warp yarn and a weft yarn made of synthetic fiber are woven in a cylindrical shape, wherein the weft yarn is made of a high-strength fiber and a heat fusion fiber. It is characterized by being formed from a core material made of a conjugate fiber which is integrated by being aligned and heated and fused, and a jacket covering the core material.

[0008] Claim 3 is characterized in that the high-strength fiber of claim 1 or 2 is a carbon fiber or an aramid fiber or a combination thereof. A fourth aspect of the present invention is characterized in that the heat-sealing fiber of the first or second aspect is a polyamide fiber or a polyester fiber.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a first embodiment, and FIG. 1 is a half sectional view of a suction tube as a shape-retaining hose. The jacket 12 of the hose 11 is formed by weaving a warp yarn 13 and a weft yarn 14 in a tubular shape.

The warp yarn 13 is a synthetic fiber yarn having a designation of 75.
10s / polyester spun yarn
10 264 yarns and 20s / 10 of polyester spun yarn
Is used. 10s / 10 of polyester spun yarn
Polyester filament 1500d × 1, Nylon filament 1260 instead of 2 types of 20s / 10
d × 5, vinylon filament 1200d × 5 or the like may be used.

The weft yarn 14 is formed of a composite fiber in which the high-strength fiber 15 and the heat-fusible fiber 16 are drawn together or twisted and heat-fused to be integrated. The high-strength fiber 15 is a carbon fiber or an aramid fiber, and the heat-fusible fiber 16 is a polyamide (nylon) heat-fused fiber, for example (a product name of Unimelt Co., Ltd.) or a polyester-based heat-sealed fiber. Fibers, for example, (Melty: trade name of Unitika Ltd.). The heat fusible fiber 16 has a melting point of 100 ° C. to 220 ° C. and is excellent in chemical resistance and adhesion to other materials.

Further, a lining layer 17 made of a rubber or a synthetic resin material is provided on the inner peripheral surface of the shacket 12, and a lining layer 18 also made of a rubber or synthetic resin material is applied on the outer peripheral surface.

FIG. 2 shows a method for producing the weft yarn 14, and FIG. 2 (a) shows a method for aligning the high-strength fiber 15 and the heat-fusible fiber 16, and a winding shaft 15a around which the high-strength fiber 15 is wound.
And a winding shaft 16a around which the heat-fused fiber 16 is wound are coaxially arranged. The high-strength fiber 15 is wound from the winding shafts 15a and 16a.
In this method, the high-strength fiber 15 and the heat-fusible fiber 16 are drawn together and wound around the winding shaft 20 by simultaneously feeding a plurality of heat-fusible fibers 16 through the ring 19.

FIG. 2B shows a method of twisting the high-strength fiber 15 and the heat-fusible fiber 16. The winding shaft 15 a around which the high-strength fiber 15 is wound and the heat-seal fiber 16 are wound. Axis 16
a are arranged in a perpendicular direction, and a plurality of heat-fused fibers 16 fed out from a winding shaft 16 a
After passing through 5a, it is a method of twisting with the high-strength fiber 15 fed out by a plurality from the winding shaft 15a and winding it around the winding shaft 20.

As described above, when the high-strength fibers 15 and the heat-fusible fibers 16 are aligned, the cross-sectional shape of the weft yarn 14 becomes
As shown in FIG. 3A, the high-strength fiber 15 and the heat-fusible fiber 16 are mixed, and when this is heated to the melting point temperature (100 ° C. to 220 ° C.) of the heat-fusible fiber 16, the heat-fusible fiber 16 When the attached fiber 16 is melted and fused with the high-strength fiber 15 and then cooled, a single composite fiber yarn is formed as shown in FIG.

In the state shown in FIG. 3A, the fibers can be freely bent or the like. However, after heating and cooling, the fibers are fused as shown in FIG. As a result, elasticity is obtained in the radial and axial directions, and rigidity is obtained. In addition, by changing the thickness of the high-strength fiber 15, the strength of the weft 14 can be set freely.

FIG. 4 shows a second embodiment, in which weft 14
Is formed from a core material 21 made of a composite fiber obtained by aligning the high-strength fiber 15 and the heat-fusible fiber 16 and heat-sealing them together, and a jacket 22 covering the core material 21. is there.

The method of manufacturing the core 21 is the same as the method of manufacturing the weft 14 of the first embodiment, and the jacket 22 covering the core 21 is made of high-strength fiber made of carbon fiber or aramid fiber. Blade or spiral.

In the above embodiment, the lining layer is provided on the inner peripheral surface and the outer peripheral surface of the jacket. However, the lining layer on the outer peripheral surface does not always need to be provided, and the lining layer is provided only on the inner peripheral surface. Light weight, low bending rigidity, and better handling. In addition, although the description has been given of the suction tube for firefighting, the invention is not limited to this, and the invention can be applied to shape-retaining hoses in all technical fields.

[0020]

As described above, according to the first aspect of the present invention, there is provided a shape retaining hose having a lining layer provided on at least the inside of a jacket in which a warp yarn and a weft yarn made of synthetic fiber are woven in a cylindrical shape. By combining high-strength fibers and heat-fusible fibers and forming them by means of heat-fused and united composite fibers, they are lightweight, yet have excellent flexibility, and can be woven by a commercially available loom. It is easy and cost reduction can be achieved.

According to the second aspect, the weft yarn is made of a composite fiber made of a high-strength fiber and a heat-sealed fiber, which are heat-sealed and integrated, and an outer cover for covering the core material. By forming the weft, the strength of the weft can be further increased in addition to the effect of the first aspect.

[Brief description of the drawings]

FIG. 1 is a half sectional view of a hose showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a method for manufacturing the weft yarn of the embodiment.

FIG. 3 is a sectional view of the weft yarn of the embodiment.

FIG. 4 is a sectional view of a weft yarn according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Hose 12 ... Jacket 13 ... Warp 14 ... Weft 15 ... High-strength fiber 16 ... Heat-fused fiber 17 ... Lining layer

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Teruhiko Matsuyama 1-21-17 Sasazuka, Shibuya-ku, Tokyo Sakura Rubber Co., Ltd.

Claims (4)

[Claims] 1. A shape-retaining hose in which a lining layer is provided at least inside a jacket in which a warp yarn and a weft yarn made of synthetic fiber are woven in a cylindrical shape, wherein the weft yarn is made of high-strength fiber and heat-fused fiber, and heated. A shape-retaining hose formed of a composite fiber fused and integrated. 2. A shape retaining hose provided with a lining layer at least inside a jacket in which a warp yarn and a weft yarn made of synthetic fibers are woven in a cylindrical shape, wherein the weft yarn is made of high-strength fibers and heat-fused fibers,
A shape-retaining hose formed from a core made of a conjugate fiber which is integrated by heating and fusion, and a jacket covering the core. 3. The hose according to claim 1, wherein the high-strength fibers are carbon fibers, aramid fibers, or a combination thereof. 4. The shape-retaining hose according to claim 1, wherein the heat-sealing fiber is a polyamide fiber or a polyester fiber.