High-strength polyvinyl chloride impregnated cloth

Abstract

The utility model discloses high-strength polyvinyl chloride impregnated cloth which comprises a fabric base layer and water-based polyvinyl chloride resin layers formed on the two sides of the fabric base layer through impregnation. The fabric base layer is formed by interweaving warp yarns and weft yarns, the warp yarns are first covering yarns, and the weft yarns are second covering yarns; the first covering yarn comprises a first core yarn and a first covering fiber layer; the second covering yarn comprises a second core yarn and a second covering fiber layer; the first core yarn comprises ultra-high molecular weight polyethylene and PTFE split film filaments; the second core yarn comprises ultra-high molecular weight polyethylene, PTFE split film filaments and polyvinyl chloride fiber yarn. The ultra-high molecular weight polyethylene is adopted in the fabric base layer, so that the strength of the fabric base layer in the warp direction and the weft direction can be improved; and the PTFE split film filaments are also used in the warp yarns and the weft yarns, so that the impregnated cloth has good dimensional stability on the basis of improving the strength of the impregnated cloth in the warp direction and the weft direction, and the impregnated cloth is prevented from being deformed when being heated.

Description

Technical Field

[0001] The utility model relates to a high-strength polyvinyl chloride impregnated cloth, belonging to the technical field of impregnated fabrics. Background Art

[0002] Polyvinyl chloride resin has the advantages of good flame retardancy, high chemical resistance, high mechanical strength and good electrical insulation, and its limited oxygen index reaches above 40. Fabrics impregnated with polyvinyl chloride resin are used as flame retardant fabrics, which has become a common choice in some application fields. However, the existing polyvinyl chloride impregnated fabrics are usually made of cotton or polyester fiber fabrics, which have shortcomings in strength. How to improve the strength of polyvinyl chloride impregnated fabrics has become a problem to be solved. Utility Model Content

[0003] The utility model aims to provide a high-strength polyvinyl chloride impregnated cloth with higher strength.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows:

[0005] The utility model relates to a high-strength polyvinyl chloride impregnated cloth, comprising a fabric base layer and a water-based polyvinyl chloride resin layer formed by impregnating both sides of the fabric base layer;

[0006] The fabric base layer is formed by interweaving warp yarns and weft yarns, the warp yarns are first core-spun yarns, and the weft yarns are second core-spun yarns; the first core-spun yarns include a first core yarn and a first covering fiber layer; the second core-spun yarns include a second core yarn and a second covering fiber layer;

[0007] The first core yarn includes ultra-high molecular weight polyethylene and PTFE split filaments twisted in parallel; the first coating fiber layer is flame-retardant cellulose fiber; the second core yarn includes ultra-high molecular weight polyethylene, PTFE split filaments and polyvinyl chloride fiber yarns twisted in parallel, and the second coating fiber layer is polyvinyl chloride fiber.

[0008] On the basis of the above solution and as a preferred solution of the above solution, a first wrapping yarn is arranged on the outer side of the first covering fiber layer, and the first wrapping yarn is a polyvinyl chloride fiber yarn.

[0009] On the basis of the above solution and as a preferred solution of the above solution, a second wrapping yarn is arranged on the outer side of the second covering fiber layer, and the second wrapping yarn is a polyvinyl chloride fiber yarn.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme, the polyvinyl chloride fiber is hollow.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme, the warp yarns and weft yarns are interwoven in a plain weave, and there is a first gap between two adjacent warp yarns, and the width of the first gap is one twentieth to one tenth of the warp yarn diameter; there is a second gap between two adjacent weft yarns, and the width of the second gap is one twentieth to one tenth of the warp yarn diameter.

[0012] The beneficial effects of the utility model are as follows: the high-strength polyvinyl chloride impregnated cloth involved in the utility model adopts ultra-high molecular weight polyethylene in the fabric base layer to improve the strength of the fabric base layer in the warp and weft directions; and the PTFE split film filaments used in the warp and weft yarns can not only improve the strength of the impregnated cloth in the warp and weft directions, but also make the impregnated cloth have good dimensional stability, thereby avoiding deformation of the impregnated cloth when heated. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the high-strength polyvinyl chloride impregnated cloth involved in the first embodiment.

[0014] The markings in the figure are as follows: 1- fabric base layer; 2- water-based polyvinyl chloride resin layer. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0016] Embodiment 1

[0017] Combination Figure 1 The high-strength polyvinyl chloride impregnated cloth involved in this embodiment comprises a fabric base layer 1 and a water-based polyvinyl chloride resin layer 2 formed by impregnating both sides of the fabric base layer 1.

[0018] The fabric base layer 1 is interwoven with warp yarn and weft yarn, the warp yarn is the first core-spun yarn, and the weft yarn is the second core-spun yarn; the first core-spun yarn includes the first core yarn and the first covering fiber layer; the second core-spun yarn includes the second core yarn and the second covering fiber layer; the first core yarn includes ultra-high molecular weight polyethylene and PTFE split film filaments twisted in parallel; the first covering fiber layer is flame-retardant cellulose fiber; the second core yarn includes ultra-high molecular weight polyethylene, PTFE split film filaments and polyvinyl chloride fiber yarns twisted in parallel, and the second covering fiber layer is polyvinyl chloride fiber. In this embodiment, the flame-retardant cellulose fiber is selected as flame-retardant viscose.

[0019] Ultra-high molecular weight polyethylene filaments are used in the first core yarn of the warp yarn and the second core yarn of the weft yarn, which can provide higher strength for the fabric base, so that the impregnated cloth also has high strength. In addition, the PTFE split film filaments used in both make the impregnated cloth have good shape retention and dimensional stability when heated, which can effectively prevent the deformation of the impregnated cloth.

[0020] Furthermore, the warp yarns and weft yarns are interwoven in a plain weave, and there is a first gap between two adjacent warp yarns, the width of the first gap is one twentieth to one tenth of the warp yarn diameter; there is a second gap between two adjacent weft yarns, the width of the second gap is one twentieth to one tenth of the warp yarn diameter. The gap between adjacent warp yarns and weft yarns allows the resin to pass through the fabric base 1 when impregnating the water-based polyethylene resin, so that the water-based polyvinyl chloride resin layers 2 on both sides can be connected, thereby ensuring the strength of the impregnated fabric and making the water-based polyvinyl chloride resin layer 2 not easy to be peeled off.

[0021] Embodiment 2

[0022] The high-strength polyvinyl chloride impregnated cloth involved in this embodiment is different from the first embodiment in that: a first wrapping yarn is arranged on the outer side of the first wrapping fiber layer, and the first wrapping yarn is a polyvinyl chloride fiber yarn. A second wrapping yarn is arranged on the outer side of the second wrapping fiber layer, and the second wrapping yarn is a polyvinyl chloride fiber yarn.

[0023] Furthermore, the polyvinyl chloride fibers are hollow, and the hollow polyvinyl chloride fibers can make the impregnated cloth have a certain warmth-keeping effect.

[0024] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A high-strength polyvinyl chloride impregnated cloth, characterized in that: It comprises a fabric base layer (1), and a water-based polyvinyl chloride resin layer (2) formed by impregnation on both sides of the fabric base layer (1); The fabric base layer (1) is formed by interweaving warp yarns and weft yarns, the warp yarns are first core-spun yarns, and the weft yarns are second core-spun yarns; the first core-spun yarns include a first core yarn and a first covering fiber layer; the second core-spun yarns include a second core yarn and a second covering fiber layer; The first core yarn includes ultra-high molecular weight polyethylene and PTFE split filaments twisted in parallel; the first coating fiber layer is flame-retardant cellulose fiber; the second core yarn includes ultra-high molecular weight polyethylene, PTFE split filaments and polyvinyl chloride fiber yarns twisted in parallel, and the second coating fiber layer is polyvinyl chloride fiber.

2. The high-strength polyvinyl chloride impregnated cloth according to claim 1, characterized in that: A first wrapping yarn is arranged on the outer side of the first covering fiber layer, and the first wrapping yarn is a polyvinyl chloride fiber yarn.

3. The high-strength polyvinyl chloride impregnated cloth according to claim 1, characterized in that: A second wrapping yarn is arranged on the outer side of the second covering fiber layer, and the second wrapping yarn is a polyvinyl chloride fiber yarn.

4. The high-strength polyvinyl chloride impregnated cloth according to claim 1, characterized in that: The polyvinyl chloride fiber is hollow.

5. The high-strength polyvinyl chloride impregnated cloth according to claim 1, characterized in that: The warp yarns and weft yarns are interwoven in a plain weave, and there is a first gap between two adjacent warp yarns, the width of which is one twentieth to one tenth of the warp yarn diameter; there is a second gap between two adjacent weft yarns, the width of which is one twentieth to one tenth of the warp yarn diameter.

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