Bamboo fiber bio-based synthetic leather

Abstract

The utility model discloses bamboo fiber bio-based synthetic leather and relates to the technical field of leather. Comprising an inner layer, the inner layer comprises a breathable layer, a bamboo fiber bio-based PU coating and a supporting layer, and the bamboo fiber bio-based PU coating is located at the top of the breathable layer; a middle layer and a protective layer are sequentially arranged at the top of the supporting layer; the breathable layer is a netted non-woven fabric, and the netted non-woven fabric is made of wrap yarn through dry-method netting or wet-method netting. The wrap yarn comprises cotton fibers, and skin-friendly fibers and bamboo pulp viscose fibers are spirally connected to the outer sides of the cotton fibers in a wound mode. By the adoption of the technical scheme, the breathability, strength and durability of the vamp are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to leather technical field, concretely is a kind of bamboo fiber bio-based synthetic leather. BACKGROUND

[0002] Leather is usually divided into natural leather and synthetic leather, natural leather refers to the skin of animal such as cow, sheep and pig, which is processed by removing hair, and has properties such as flexibility and air permeability, and is widely used in life, but it is difficult to obtain natural leather now, and the cost is high.

[0003] A kind of low temperature-resistant PU synthetic leather with good flexibility is disclosed in Chinese utility model patent with authorization announcement No.CN220841771U, which includes PU synthetic leather, the PU synthetic leather is a multilayer composite structure, and is provided with wear-resistant layer, toughness layer, low temperature-resistant layer, durable layer and antibacterial layer from top to bottom. Through the toughness layer and the low temperature-resistant layer, the toughness and low temperature-resistant effect of the PU synthetic leather are improved, so that the PU synthetic leather will not become hard and brittle in the environment with low temperature in winter, and also has good flexibility, which improves the service life of the PU synthetic leather. Through the wear-resistant layer, durable layer, antibacterial layer and heat dissipation hole, the wear resistance, antibacterial property, heat dissipation and durability of the PU synthetic leather are improved, and the daily use life of the PU synthetic leather is prolonged.

[0004] The synthetic leather made by the prior art has poor air permeability, strength and durability when applied to the vamp, therefore, a bamboo fiber bio-based synthetic leather is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of bamboo fiber bio-based synthetic leather, which is beneficial to improve the air permeability, strength and durability of the vamp.

[0006] To achieve the above purpose, the following technical solutions are adopted:

[0007] The first technical solution relates to a bamboo fiber bio-based synthetic leather, which includes an inner layer, the inner layer includes an air-permeable layer, a bamboo fiber bio-based PU coating layer and a support layer, the bamboo fiber bio-based PU coating layer is located on the top of the air-permeable layer, and the support layer is provided with an intermediate layer and a protective layer in sequence on the top.

[0008] The second technical solution is based on the first technical solution, wherein the covering yarn includes cotton fibers, and the outer side of the cotton fibers is spirally wound with skin-friendly fibers and bamboo pulp viscose fibers.

[0009] The third technical solution is based on the first technical solution, wherein the support layer is a nylon net.

[0010] The fourth technical solution is based on the third technical solution, wherein the thickness of the inner layer is 0.6-0.8mm.

[0011] The fifth technical solution is based on the first technical solution, wherein the middle layer is a PU foaming layer.

[0012] The sixth technical solution is based on the fifth technical solution, wherein the thickness of the middle layer is 0.3-0.4mm.

[0013] The seventh technical solution is based on the first technical solution, wherein the protective layer is a PU dense layer.

[0014] The eighth technical solution is based on the seventh technical solution, wherein the thickness of the protective layer is 0.08-0.1mm.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] The breathable layer is a sandwich non-woven fabric made of covering yarn through dry or wet web formation, and the covering yarn comprises cotton fibers, modal fibers and bamboo pulp viscose fibers wound in a spiral shape, so that the breathable layer has good air permeability, moisture absorption and comfort, is environmentally friendly and degradable.

[0017] Meanwhile, the sandwich non-woven fabric is coated with bamboo fiber bio-based PU pulp on one side to form a uniform coating, and after coagulation and foaming treatment of the uniform coating, a bamboo fiber bio-based PU coating is formed on the outer side of the sandwich non-woven fabric, so that the synthetic leather not only has sustainability and reduces environmental impact, but also is more comfortable to use due to the good moisture absorption and air permeability of the bamboo fiber.

[0018] In addition, a nylon net is also provided to enhance the strength and durability of the synthetic leather and provide a good support structure for the synthetic leather, improving the appearance of the finished product. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a schematic diagram of the overall structure of the present application;

[0020] Fig. 2 It is a schematic diagram of the covering yarn structure of the breathable layer of the present application.

[0021] In the figure: 101, support layer; 102, breathable layer; 2, middle layer; 3, protective layer; 1021, cotton fiber; 1022, bamboo pulp viscose fiber; 1023, skin-friendly fiber. DETAILED DESCRIPTION

[0022] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] As shown in Figs. 1-2 The utility model provides a technical scheme: a bamboo fiber bio-based synthetic leather, including inner layer, the inner layer includes breathable layer 102 and support layer 101, the support layer 101 top is sequentially provided with intermediate layer 2 and protective layer 3.

[0024] Breathable layer 102 is the non - woven fabric of sandwich, wherein, the non - woven fabric of sandwich is made by covering yarn through dry laid or wet laid, as shown in Fig. 2 The covering yarn includes cotton fiber 1021, and the skin fiber 1022 and bamboo pulp viscose fiber 1023 are spirally wound on the outer side of the cotton fiber 1021, wherein the skin fiber 1022 is selected from modal fiber, and the bamboo pulp viscose fiber 1023 is made of 100% bamboo fiber viscose fiber, so that the breathable layer 102 has good air permeability and comfort, is environment-friendly and biodegradable.

[0025] The side of the non - woven fabric of sandwich is coated with bamboo fiber bio-based PU pulp to form a uniform coating, and after the uniform coating is treated by coagulation and foaming, a bamboo fiber bio-based PU coating is formed on the outer side of the non - woven fabric of sandwich.

[0026] In the scheme, the support layer 101 is nylon net, which is used to enhance the strength and durability of the synthetic leather and provide a good support structure, and the thickness of the inner layer is 0.6-0.8mm.

[0027] In the scheme, the intermediate layer 2 is a PU foaming layer, and the thickness of the intermediate layer 2 is 0.3-0.4mm, which improves the softness and cushioning effect of the synthetic leather and improves the comfort of wearing.

[0028] In the scheme, the protective layer 3 is a PU dense layer, and the thickness of the protective layer 3 is 0.08-0.1mm, which can not only realize the effect of various patterns and colors, increase the aesthetic and tactile feeling, but also increase the waterproofness, wear resistance and stain resistance of the synthetic leather.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the attached embodiments and their equivalents.

Claims

1. A bamboo fiber bio-based synthetic leather comprising an inner layer, characterized in that: The inner layer comprises an air-permeable layer, a bamboo fiber bio-based PU coating layer and a support layer, the bamboo fiber bio-based PU coating layer is located on top of the air-permeable layer; the top of the support layer is sequentially provided with an intermediate layer and a protective layer; the air-permeable layer is a spunlace nonwoven fabric, the spunlace nonwoven fabric is made of covered yarn through dry laid or wet laid.

2. The bamboo fiber bio-based synthetic leather according to claim 1, characterized in that: The covered yarn comprises cotton fibers, and the outer side of the cotton fibers is spirally wound with skin-friendly fibers and bamboo pulp viscose fibers.

3. The bamboo fiber bio-based synthetic leather according to claim 1, characterized in that: The support layer is a nylon net.

4. The bamboo fiber bio-based synthetic leather according to claim 3, characterized in that: The thickness of the inner layer is 0.6-0.8mm.

5. The bamboo fiber bio-based synthetic leather according to claim 1, characterized in that: The intermediate layer is a PU foaming layer.

6. The bamboo fiber bio-based synthetic leather according to claim 5, characterized in that: The thickness of the intermediate layer is 0.3-0.4mm.

7. The bamboo fiber bio-based synthetic leather according to claim 1, characterized in that: The protective layer is a PU dense layer.

8. The bamboo fiber bio-based synthetic leather according to claim 7, characterized in that: The thickness of the protective layer is 0.08-0.1mm.

Images