Hydrolysis-resistant environment-friendly leather base cloth

Abstract

The utility model discloses hydrolysis-resistant environment-friendly leather base cloth which comprises a base cloth layer, a stab-resistant fabric layer and an antibacterial non-woven fabric layer which are compounded with one another, the base cloth layer comprises a surface comb, a middle comb and a bottom comb, and yarns used by the surface comb are blended spinning filament core-spun yarns; the mixed spinning filament core-spun yarn comprises core yarn and polyamide-polyester combined filament yarn wrapping the outer side of the core yarn, the core yarn is ultra-high molecular weight polyethylene filament yarn, and the polyamide-polyester combined filament yarn comprises polyamide 6 and polyester POY which are fixedly connected through network points; a fluff layer formed by fuzzing is arranged on the surface of one side, far away from the surface comb of the stab-resistant fabric layer, of the base cloth layer; a fluorine-silicon modified waterborne polyurethane coating is arranged on one side, provided with the fluff layer, of the base cloth layer. The used fluorosilicone modified waterborne polyurethane coating can improve the hydrolysis resistance of the resin and prolong the service life of the leather base cloth, and waterborne polyurethane is adopted, so that the leather base cloth has an environment-friendly effect. The ultra-high molecular weight polyethylene filaments are adopted in the yarns used by the base cloth layer, so that the anti-cutting effect of the leather base cloth is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of hydrolysis-resistant environmental-friendly leather base cloth, belong to leather base cloth technical field. BACKGROUND

[0002] Traditional leather base cloth is mostly solvent type polyurethane, usually containing DMF, methyl and other toxic solvents, impregnation or coating is carried out, although good strength leather base cloth can be prepared, but solvent type polyurethane releases VOCs, pollutes environment and does not comply with increasingly stringent environmental protection requirements. In order to solve the environmental protection problem, water-based polyurethane is used instead of conventional solvent type polyurethane, but water-based polyurethane is prone to hydrolysis in hot and humid environment, resulting in strength decline, surface powdering and affecting service life. The products prepared by using leather base cloth, such as automobile seat cushion or sofa fabric, will inevitably be cut by sharp objects or knives, how to prepare a kind of hydrolysis-resistant environmental-friendly leather base cloth with good cutting resistance becomes a problem to be solved. SUMMARY

[0003] The utility model aims at providing a kind of hydrolysis-resistant environmental-friendly leather base cloth, which has cutting resistance on the basis of hydrolysis resistance.

[0004] To solve the above technical problems, the utility model aims at realizing as follows:

[0005] The utility model relates to a kind of hydrolysis-resistant environmental-friendly leather base cloth, including the base cloth layer, the anti-puncture fabric layer and the antibacterial non-woven fabric layer of complex;

[0006] The base cloth layer includes face comb, middle comb and bottom comb, and the yarn used in the face comb is blended filament core-spun yarn;

[0007] The blended filament core-spun yarn includes core yarn and polyester blend filament fixedly connected by network points on the outside of the core yarn, and the core yarn is ultra-high molecular weight polyethylene filament, and the polyester blend filament includes nylon 6 and polyester POY;

[0008] The surface of the side of the face comb of the base cloth layer away from the anti-puncture fabric layer has a pile layer formed by raising hair;The side of the base cloth layer with the pile layer is provided with a fluorosilicon modified water-based polyurethane coating.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: characterized in that, the gassing number of the face comb is 1-0 / 5-6 / / ;The antibacterial polyester filament is used in the middle comb, and the gassing number is 1-0 / 1-2 / / ;The high-strength nylon 6 filament is used in the bottom comb, and the gassing number is 2-3 / 1-0 / / .

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the fluorosilicon modified water-based polyurethane coating layer is provided with air permeable holes extending through the fluorosilicon modified water-based polyurethane coating layer to the base cloth layer.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the anti-puncture fabric layer is composed of a nylon fabric layer and TPU electrospun nanofiber webs arranged on both sides of the nylon fabric layer, the pore size of the TPU electrospun nanofiber web is ≤50 microns, and a high modulus TPU is used.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme: the molecular weight of the high modulus TPU is 4000-6000.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme: the nylon fabric layer is interwoven by high-strength nylon 6 filaments and hot melt filaments.

[0014] The beneficial effects of the present application are: the water-resistant environment-friendly leather base cloth of the present application uses a fluorosilicon modified water-based polyurethane coating layer to improve the hydrolysis resistance of the resin and the service life of the leather base cloth, and the use of water-based polyurethane has an environmental protection effect. The use of ultrahigh molecular weight polyethylene filaments in the yarn of the base cloth layer improves the cut resistance of the leather base cloth. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the water-resistant environment-friendly leather base cloth according to example one;

[0016] Figure 2 is a structural schematic view of the anti-puncture fabric layer according to example one;

[0017] Figure 3 is a structural schematic view of the water-resistant environment-friendly leather base cloth according to example two. DETAILED DESCRIPTION

[0018] The present application will be further described below in combination with the drawings and specific examples.

[0019] Example one

[0020] In combination with Figure 1 and Figure 2 , a detailed description of the present example will be given. The water-resistant environment-friendly leather base cloth according to the present example comprises a base cloth layer 1, an anti-puncture fabric layer 2 and an antibacterial non-woven fabric layer 3 which are combined by a hot melt adhesive film.

[0021] The base cloth layer 1 includes face comb, middle comb and bottom comb, the yarn used in the face comb is blended filament core spun yarn; the blended filament core spun yarn includes core yarn and polyester mixed filament fixedly connected by network points outside the core yarn, the core yarn is ultra-high molecular weight polyethylene filament, the polyester mixed filament includes nylon 6 and polyester POY fixedly connected by network points; the laying-in number of the face comb is 1-0 / 5-6 / / ; the middle comb uses 75D / 36F antibacterial polyester filament, and the laying-in number is 1-0 / 1-2 / / ; the bottom comb uses 75D / 24F high-strength nylon 6 filament, and the laying-in number is 2-3 / 1-0 / / . The specification of the nylon 6 is 60D / 96F. The specification of the polyester POY is 50D / 36F.

[0022] The surface of the base cloth layer 1 away from the side of the anti-puncture fabric layer 2 has a pile layer 4 formed by raising; the pile layer 4 is formed by raising the nylon 6 and the polyester POY. The side of the base cloth layer 1 with the pile layer 4 is provided with a fluorosilicon modified water-based polyurethane coating 5. The pile in the pile layer 4 extends to the inside of the fluorosilicon modified water-based polyurethane coating 5, thereby improving the peeling strength of the fluorosilicon modified water-based polyurethane coating 5. The water-based polyurethane is copolymerized and modified by adding a modified material containing fluorine groups, thereby improving the water resistance of the water-based polyurethane emulsion film, and specifically, perfluoroalkyl ethyl acrylate is selected as the modifier.

[0023] Further, in order to improve the air permeability of the fluorosilicon modified water-based polyurethane coating 5, the fluorosilicon modified water-based polyurethane coating 5 is provided with air permeable holes, the air permeable holes extend through the fluorosilicon modified water-based polyurethane coating 5 to the base cloth layer 1. The average pore size of the air permeable holes is about 0.1 mm.

[0024] Further, the anti-puncture fabric layer 2 is composed of a nylon fabric layer 21 and TPU electrostatic spinning nanofiber nets 22 arranged on both sides of the nylon fabric layer 21, the pore size of the TPU electrostatic spinning nanofiber nets 22 is ≤50 microns, and high modulus TPU is used. The molecular weight of the high modulus TPU is 4000-6000. The nylon fabric layer 21 is interwoven by high-strength nylon 6 filaments and hot melt filaments. The hot melt filaments are hot melt polyester filaments, which will melt when heated, and can bond adjacent high-strength nylon 6 filaments, so that the high-strength nylon filaments will not slip when subjected to external force. The fineness of the high-strength nylon 6 filaments used is 50-120D / 10-24F, and in this embodiment, it is selected as 120D / 10F. The fineness of the hot melt polyester filaments is 100D / 48F. The warp and weft density of the fabric is 110 roots per inch and 90 roots per inch respectively.

[0025] Further, the antibacterial non-woven fabric layer 3 used is antibacterial polyester non-woven fabric, and the grammage is 45 grams per square meter. The water-jet non-woven fabric is relatively fluffy and has good air permeability.

[0026] Example Two

[0027] In combination Figure 3 A detailed description of the present embodiment is given. The water-resistant environmentally friendly leather base cloth involved in the present embodiment is different from that of Example One in that a planar three-way fabric layer 6 is compounded between the anti-puncture fabric layer 2 and the antibacterial non-woven fabric layer 3 through a hot melt adhesive mesh film; the planar three-way fabric layer 6 is woven by three groups of high-strength polyester filaments according to a 60° angle, which can improve the tear resistance of the leather base cloth in different directions.

[0028] The preferred embodiments of the present application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the existing technology according to the concept of the present application shall be within the protection scope determined by the claims.

Claims

1. A hydrolysis-resistant environmentally friendly leather base cloth, characterized by, The base cloth layer (1), the anti-puncture fabric layer (2) and the antibacterial non-woven fabric layer (3) are combined together. The base cloth layer (1) comprises a face comb, a middle comb and a bottom comb, the yarn used in the face comb is a blended filament core-spun yarn; The blended filament core-spun yarn comprises a core yarn and a polyester and nylon blended filament wrapped outside the core yarn, the core yarn is an ultra-high molecular weight polyethylene filament, and the polyester and nylon blended filament comprises nylon 6 and polyester POY fixedly connected through network points; The surface of the side of the face comb of the base cloth layer (1) away from the anti-puncture fabric layer (2) has a pile layer (4) formed by raising the pile; the side of the base cloth layer (1) with the pile layer (4) is provided with a fluorosilicon modified water-based polyurethane coating (5).

2. The hydrolysis-resistant environment-friendly leather base cloth according to claim 1, characterized in that, The filling number of the face comb is 1-0 / 5-6 / / ; the middle comb uses antibacterial polyester filaments, and the filling number is 1-0 / 1-2 / / ; the bottom comb uses high-strength nylon 6 filaments, and the filling number is 2-3 / 1-0 / / .

3. The hydrolysis-resistant environment-friendly leather base cloth according to claim 1, characterized in that, The fluorosilicon modified water-based polyurethane coating (5) is provided with air permeable holes extending through the fluorosilicon modified water-based polyurethane coating (5) to the base cloth layer (1).

4. The hydrolysis-resistant environment-friendly leather base cloth according to claim 1, characterized in that, The anti-puncture fabric layer (2) comprises a nylon fabric layer (21) and TPU electrospun nanofiber webs (22) arranged on both sides of the nylon fabric layer (21), the pore size of the TPU electrospun nanofiber webs (22) is ≤50 microns, and high modulus TPU is used.

5. The hydrolysis-resistant environment-friendly leather base cloth according to claim 4, characterized in that, The molecular weight of the high modulus TPU is 4000-6000.

6. The hydrolysis-resistant environment-friendly leather base cloth according to claim 4, characterized in that, The nylon fabric layer (21) is interwoven by high-strength nylon 6 filaments and hot melt filaments.

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