A tear-resistant polyester warp-knitted fabric

Abstract

This utility model discloses a tear-resistant polyester warp-knitted fabric, comprising: a tear-resistant layer, with abrasion-resistant layers on both sides of the tear-resistant layer; the tear-resistant layer includes a ground structure and weft yarns; the ground structure is a warp velvet structure woven from front and back comb yarns, with front comb warp pile padding yarn and back comb warp plain padding yarn; polyester filaments are inserted into the front and back combs, and the weft yarns are ultra-high molecular weight polyethylene fiber polyester blended yarns; the abrasion-resistant layer is warp-knitted from abrasion-resistant yarns. Based on this utility model of tear-resistant polyester warp-knitted fabric, the tear-resistant layer introduces weft yarns on the basis of the ground structure and adopts a full-weft insertion process, so that the weft yarns form a continuous support layer, preventing the tear cracks from spreading along the weft direction when the fabric tears during use, thus improving the tear resistance of the main body of the fabric. Combined with high-strength polyester filaments and ultra-high molecular weight polyethylene fiber polyester blended yarns, the tear resistance of the warp-knitted fabric is further improved, which helps to extend the service life of the product.

Description

Technical Field

[0001] This utility model relates to a warp-knitted fabric, specifically a tear-resistant polyester warp-knitted fabric. Background Technology

[0002] Warp-knitted fabric is made by feeding yarns into a warp knitting machine in the warp direction, where the yarns interlock to form loops. Polyester warp-knitted fabric is widely used in clothing, home textiles, and industrial fabrics due to its advantages such as crispness, wrinkle resistance, easy washing and quick drying, and non-deformation.

[0003] In practical use, polyester warp-knitted fabrics may be subjected to various external forces, such as stretching, friction, and tearing. If the fabric's tear resistance is insufficient, it is prone to tearing and damage during use, affecting the product's service life and safety.

[0004] While ordinary polyester warp-knitted fabrics possess a certain degree of strength, their resistance to significant tearing forces is often insufficient. Therefore, it is necessary to provide a tear-resistant polyester warp-knitted fabric. Utility Model Content

[0005] The purpose of this invention is to provide a tear-resistant polyester warp-knitted fabric, which is designed to have better tear resistance than ordinary polyester warp-knitted fabrics and is suitable for use as industrial fabrics.

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: A tear-resistant polyester warp-knitted fabric, comprising: a tear-resistant layer, wherein abrasion-resistant layers are provided on both sides of the tear-resistant layer; the tear-resistant layer comprises a ground structure and weft yarns; the ground structure is a warp velvet structure woven from front and back comb yarns, wherein the front comb is warp pile padding yarn and the back comb is warp plain padding yarn; the padding yarn number of the weft yarn is:

[0007] 0-0 / 0-0 / 2-2 / 3-3 / 4-4 / 5-5 / 6-6 / 7-7 / 7-7 / 6-6 / 5-5 / 4-4 / 3-3 / 2-2 / 0-0 / 0-0 / / ;

[0008] The front and back combs are threaded with polyester filaments, the weft yarn is a polyester blended yarn of ultra-high molecular weight polyethylene fiber, and the abrasion-resistant layer is warp-knitted from abrasion-resistant yarn.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the polyester filament is a high-strength polyester filament.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the specification of the ultra-high molecular weight polyethylene fiber polyester blended yarn is 25tex×2.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme: the wear-resistant yarn is a bio-based nylon filament.

[0012] Based on the above scheme and as a preferred embodiment of the above scheme: the tear-resistant layer and the abrasion-resistant layer are composited by hot-melt high-permeability polyurethane.

[0013] The beneficial effects of this utility model are as follows: Based on the tear-resistant polyester warp-knitted fabric of this utility model, the tear-resistant layer introduces weft yarns on the basis of the ground structure and adopts a full-weft weft insertion process, so that the weft yarns form a continuous support layer, preventing the tear cracks from spreading along the weft direction when the fabric is torn during use, thereby improving the tear resistance of the main body of the fabric. Combined with high-strength polyester filament and ultra-high molecular weight polyethylene fiber polyester blended yarn, the tear resistance of the warp-knitted fabric is further improved. The abrasion-resistant layer gives the warp-knitted fabric good abrasion resistance. Therefore, it has better tear resistance and abrasion resistance than ordinary polyester warp-knitted fabrics, which helps to extend the service life of the product. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the tear-resistant polyester warp-knitted fabric involved in this utility model;

[0015] In the diagram: 1-Tear-resistant layer, 2-Abrasion-resistant layer. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] Combination Figure 1 This embodiment provides a detailed description of a tear-resistant polyester warp-knitted fabric, comprising: a tear-resistant layer 1, with abrasion-resistant layers 2 disposed on both sides of the tear-resistant layer 1; the tear-resistant layer 1 includes a ground weave and weft yarns; the ground weave is a warp pile weave formed by front and back comb yarns, wherein the front comb is warp pile padding yarn and the back comb is warp plain padding yarn; the padding yarn numbers of the weft yarns are:

[0018] 0-0 / 0-0 / 2-2 / 3-3 / 4-4 / 5-5 / 6-6 / 7-7 / 7-7 / 6-6 / 5-5 / 4-4 / 3-3 / 2-2 / 0-0 / 0-0 / / ;

[0019] The front and back combs are threaded with polyester filaments, the weft yarn is a polyester blended yarn of ultra-high molecular weight polyethylene fiber, and the abrasion-resistant layer 2 is warp-knitted from abrasion-resistant yarn.

[0020] In the warp-pile weave, the front comb extension yarns span two warp rows. Even if a loop breaks and the warp rows unravel, the fabric structure remains connected by the front comb extension yarns, avoiding the left-right separation defect of double-warp plain weave fabrics. Based on the ground weave, weft yarns are introduced, and a full-weft weft insertion process is used to create a continuous support layer in the weft direction. This prevents tearing during use from propagating along the weft direction, improving the fabric's isotropic tear resistance.

[0021] Furthermore, the polyester filament is a high-strength polyester filament. High-strength polyester filament is a high-strength, abrasion-resistant, and high-modulus high-performance fiber. Compared with ordinary polyester filament, it has higher breaking strength and lower breaking elongation. Its breaking strength is greater than or equal to 8.4 cN / dtex, and its breaking elongation is 10-13%. It also has higher initial modulus and better creep resistance. Its warp-knitted ground structure helps to improve the tear resistance of the fabric body.

[0022] Furthermore, the specification of the ultra-high molecular weight polyethylene (UHMWPE) fiber-polyester blended yarn is 25 tex × 2. Specifically, the UHMWPE fiber-polyester blended yarn is a 90 / 10 blended yarn of UHMWPE fiber and polyester. UHMWPE fiber is the strongest chemical fiber, with a highly symmetrical methylene structure in its main chain. Its breaking strength is 30-50 cN / dtex, and its initial modulus is greater than 900 cN / dtex. It is a high-strength, high-modulus fiber with good impact resistance. The strength of the plied yarn is more than 10% higher than that of the single yarn. Furthermore, the blended yarn made by incorporating a certain proportion of polyester into the UHMWPE staple fiber has good mechanical properties and helps to improve the yarn's breaking strength, which is beneficial for developing tear-resistant textile products.

[0023] Furthermore, the wear-resistant yarn is a bio-based nylon filament. Bio-based nylon is a polyamide product produced by converting alkanes, bio-based alkanes, oil scraps, fatty acids, and biomass into pentanediamine through a bioprocess, followed by polymerization. Bio-based nylon has better wear resistance than nylon 6, mainly because it possesses higher tensile strength and elongation, allowing it to store more tensile energy. During friction, the fibers are subjected to repeated stress; fabrics with higher tensile strength and elongation can better withstand this stress, thus exhibiting better wear resistance.

[0024] Furthermore, the tear-resistant layer 1 and the abrasion-resistant layer 2 are composited using hot-melt, highly permeable polyurethane. Specifically, when the tear-resistant layer 1 and the abrasion-resistant layer 2 pass through the adhesive applicator of the laminating equipment, the hot-melt polyurethane adhesive in the pores of the engraving roller is forced to transfer onto the tear-resistant layer 1 and the abrasion-resistant layer 2 by the squeezing of the silicone roller. Then, through heating and pressing in the laminating equipment, the composited tear-resistant layer 1 and the abrasion-resistant layer 2 are firmly bonded together. Since the main body of the fabric formed by the composite of the tear-resistant layer 1 and the abrasion-resistant layer 2 is used as an industrial fabric and needs to have good tear resistance, it belongs to a medium-thickness product. During the lamination process, polyurethane with strong adhesion and good anti-slip properties is selected. In this embodiment, hot-melt, highly permeable polyurethane is selected, which has a tensile modulus of over 4.98 MPa when meeting 99.9% elongation. The concentration of the hot-melt, highly permeable polyurethane is 98%-99%, the concentration of the additives is 2%-1%, and the melt temperature is 100-120℃.

[0025] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A tear resistant polyester tricot fabric, characterized in that, include: A tear-resistant layer (1) has abrasion-resistant layers (2) on both sides; the tear-resistant layer (1) includes a ground weave and weft yarns; the ground weave is a warp velvet weave made of front and back comb yarns, the front comb is warp velvet padding yarn, and the back comb is warp velvet padding yarn; the padding yarn numbers of the weft yarns are: 0-0 / 0-0 / 2-2 / 3-3 / 4-4 / 5-5 / 6-6 / 7-7 / 7-7 / 6-6 / 5-5 / 4-4 / 3-3 / 2-2 / 0-0 / 0-0 / / ； The front and back combs are inserted with polyester filaments, the weft yarn is a blended yarn of ultra-high molecular weight polyethylene fiber and polyester, and the wear-resistant layer (2) is warp-knitted from wear-resistant yarn.

2. A tear-resistant polyester tricot fabric according to claim 1, characterized in that, The polyester filament is a high-strength polyester filament.

3. The tear-resistant polyester tricot fabric according to claim 1, wherein, The specification of the ultra-high molecular weight polyethylene fiber polyester blended yarn is 25tex×2.

4. The tear-resistant polyester warp-knitted fabric according to claim 1, characterized in that, The wear-resistant yarn is a bio-based nylon filament.

5. The tear-resistant polyester tricot fabric according to claim 1, wherein The tear-resistant layer (1) and the abrasion-resistant layer (2) are composited by hot-melt, highly permeable polyurethane.

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