CN216373597U

CN216373597U - Waterborne polyurethane synthetic leather with flame retardant function

Info

Publication number: CN216373597U
Application number: CN202123014939.8U
Authority: CN
Inventors: 汪兴海; 林文婷; 张少松
Original assignee: Fujian Zhongyu Waterborne Super Fiber Technology Co ltd
Current assignee: Fujian Zhongyu Waterborne Super Fiber Technology Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-04-26
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses a waterborne polyurethane synthetic leather with a flame retardant function, which comprises a synthetic leather body, wherein the synthetic leather comprises a bottom layer, a middle layer arranged on the surface of the bottom layer and a surface layer arranged on the upper surface of the surface layer, the surface layer comprises a fabric layer and a wear-resistant layer, a filter screen layer is arranged between the fabric layer and the wear-resistant layer, flame retardants are uniformly distributed on the wear-resistant layer, vent holes distributed according to a certain shape penetrate through the synthetic leather body, and the filter screen layer arranged between the fabric layer and the wear-resistant layer and the vent holes penetrating through the synthetic leather are designed, so that the air permeability of the synthetic leather is improved, and bacteria can be easily bred in the synthetic leather when the synthetic leather is inconvenient to treat.

Description

Waterborne polyurethane synthetic leather with flame retardant function

Technical Field

The utility model relates to the field of synthetic leather, in particular to waterborne polyurethane synthetic leather with a flame retardant function.

Background

Plastic articles that mimic the composition and structure of natural leather and can be used as a substitute material therefor. The front and back surfaces of the leather are very similar to leather, have certain air permeability and are closer to natural leather than common artificial leather. It is widely used for making shoes, boots, bags, balls, etc. Synthetic leather has now largely replaced natural leather which is not available and is more widely used than natural leather. When the clothes used by wearing the synthetic leather work in special occasions, the temperature of the environment is high, so that the surface of the synthetic leather is easy to age, and the moisture in the clothes can not be discharged in time, thereby the moisture is easy to accumulate in the clothes.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides the waterborne polyurethane synthetic leather with the flame retardant function, so that the air permeability of the synthetic leather is improved, and bacteria can be easily bred in the synthetic leather when the synthetic leather is inconvenient to treat.

In order to solve the technical problems, the utility model provides the following technical scheme: the waterborne polyurethane synthetic leather with the flame retardant function comprises a synthetic leather body, wherein the synthetic leather comprises a bottom layer, a middle layer and a surface layer, the middle layer is arranged on the surface of the bottom layer, the surface layer is arranged on the upper surface of the surface layer, the surface layer comprises a fabric layer and a wear-resistant layer, a filter screen layer is arranged between the fabric layer and the wear-resistant layer, flame retardants are uniformly distributed on the wear-resistant layer, and vent holes distributed according to a certain shape penetrate through the synthetic leather body.

As a preferable technical solution of the present invention, the bottom layer includes a non-woven fabric, a polyurethane slurry layer provided on an upper surface of the non-woven fabric, and a foaming layer provided on a surface of the polyurethane slurry layer.

In a preferred embodiment of the present invention, the intermediate layer includes a first knitted fabric, a second knitted fabric, and a reinforcing layer disposed between the first knitted fabric and the second knitted fabric, and a surface of the second knitted fabric is coated with an aqueous polyurethane resin layer for adhering the surface layer.

As a preferred embodiment of the present invention, the reinforcing layer may be a cross arrangement of warp and weft.

As a preferable technical scheme of the utility model, the warp and the weft are elastic adhesive tapes.

As a preferred technical solution of the present invention, the screen layer may be a knitted mesh.

Compared with the prior art, the utility model can achieve the following beneficial effects:

1. the filter screen layer arranged between the fabric layer and the wear-resistant layer and the vent hole penetrating through the synthetic leather are designed, so that the air permeability of the synthetic leather is improved, and bacteria can easily grow in the synthetic leather when the synthetic leather is inconvenient to treat;

2. through having designed the fire retardant of distribution in wearing layer inside to make the surface of synthetic leather be difficult for receiving the influence of high temperature, thereby guaranteed the performance of synthetic leather, strengthened the toughness of synthetic leather through the effect of enhancement layer simultaneously, improved the durable degree of synthetic leather.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of synthetic leather according to the present invention;

FIG. 2 is a schematic view of a partial cross-sectional structure of synthetic leather according to the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

wherein: 1. a bottom layer; 101. non-woven fabrics; 102. a polyurethane slurry layer; 103. a foamed layer; 2. an intermediate layer; 201. first knitted fabric; 202. a reinforcing layer; 2021. warp threads; 2022. a weft; 203. a second knitted fabric; 204. an aqueous polyurethane resin layer; 3. a surface layer; 301. a fabric layer; 302. a wear layer; 303. a flame retardant; 4. a screen layer; 5. and (4) a vent hole.

Detailed Description

The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Referring to fig. 1-2, the utility model provides a water-based polyurethane synthetic leather with flame retardant function, which comprises a synthetic leather body, wherein the synthetic leather comprises a bottom layer 1, a middle layer 2 arranged on the surface of the bottom layer 1 and a surface layer 3 arranged on the upper surface of the surface layer 3, the bottom layer 1, the middle layer 2 and the surface layer 3 are transferred and superposed through release paper and then pressed to form the synthetic leather, a filter screen layer 4 capable of being knitted mesh cloth is arranged inside the surface layer 3, and vent holes 5 distributed according to a certain shape penetrate through the synthetic leather body; therefore, the synthetic leather is subjected to exhaust treatment through the vent holes 5, the exhaust performance of the synthetic leather is improved, and meanwhile, the air entering and exiting is filtered under the action of the filter screen layer 4, so that dust and impurities are prevented from flying in;

as a further embodiment of this embodiment, as shown in fig. 3, the surface layer 3 includes a fabric layer 301 and a wear-resistant layer 302, a filter layer 4 is disposed between the fabric layer 301 and the wear-resistant layer 302, and the wear-resistant layer 302 is immersed in a flame-retardant solvent, so that the interior of the wear-resistant layer 302 is impregnated with a flame retardant 303, thereby providing the surface of the synthetic leather with flame retardant properties;

as a further embodiment of the present embodiment, as shown in fig. 2, the base sheet 1 includes a nonwoven fabric 101, a polyurethane paste layer 102 bonded to the upper surface of the nonwoven fabric 101, and a foam layer 103 bonded to the surface of the polyurethane paste layer 102;

as a further embodiment of this embodiment, as shown in fig. 2, the middle layer 2 includes a first knitted fabric 201 and a second knitted fabric 203, and a reinforcing layer 202 disposed between the first knitted fabric 201 and the second knitted fabric 203, a surface of the second knitted fabric 203 is coated with a water-based polyurethane resin layer 204 for adhering the surface layer 3, and the reinforcing layer 202 may be a warp 2021 and a weft 2022 which are arranged crosswise and both may be elastic tapes or threads.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a waterborne polyurethane synthetic leather with fire-retardant function, includes the synthetic leather body, its characterized in that: the synthetic leather comprises a bottom layer (1), a middle layer (2) arranged on the surface of the bottom layer (1) and a surface layer (3) arranged on the upper surface of the surface layer (3), wherein the surface layer (3) comprises a fabric layer (301) and a wear-resistant layer (302), a filter screen layer (4) is arranged between the fabric layer (301) and the wear-resistant layer (302), flame retardants (303) are uniformly distributed on the wear-resistant layer (302), and vent holes (5) distributed according to a certain shape penetrate through the synthetic leather body.

2. The waterborne polyurethane synthetic leather with the flame retardant function of claim 1, wherein the flame retardant is characterized in that: the bottom layer (1) comprises a non-woven fabric (101), a polyurethane slurry layer (102) arranged on the upper surface of the non-woven fabric (101) and a foaming layer (103) arranged on the surface of the polyurethane slurry layer (102).

3. The waterborne polyurethane synthetic leather with the flame retardant function of claim 1, wherein the flame retardant is characterized in that: the middle layer (2) comprises a first knitted fabric (201), a second knitted fabric (203) and a reinforcing layer (202) arranged between the first knitted fabric (201) and the second knitted fabric (203), and the surface of the second knitted fabric (203) is coated with a water-based polyurethane resin layer (204) used for adhering the surface layer (3).

4. The waterborne polyurethane synthetic leather with the flame retardant function of claim 3, wherein the flame retardant is characterized in that: the reinforcing layer (202) may be warp (2021) and weft (2022) arranged crosswise.

5. The waterborne polyurethane synthetic leather with the flame retardant function of claim 4, wherein the flame retardant is characterized in that: the warp (2021) and the weft (2022) are elastic adhesive tapes.

6. The waterborne polyurethane synthetic leather with the flame retardant function of claim 3, wherein the flame retardant is characterized in that: the filter screen layer (4) can be knitted mesh.