CN219276905U

CN219276905U - Waterproof breathable PVC synthetic leather

Info

Publication number: CN219276905U
Application number: CN202223054945.0U
Authority: CN
Inventors: 沈建峰; 张利军; 杨毅
Original assignee: Zhejiang Jinshang Synthetic Leather Co ltd
Current assignee: Zhejiang Jinshang Synthetic Leather Co ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-06-30
Anticipated expiration: 2032-11-17

Abstract

The utility model discloses waterproof and breathable PVC synthetic leather, and aims to provide high-strength waterproof and breathable PVC synthetic leather. The waterproof layer is provided with micropores, the ventilation holes are communicated with the micropores, and the other side of the base layer is connected with a wear-resistant layer. The beneficial effects of the utility model are as follows: the PVC synthetic leather has high water resistance and air permeability, flat surface, stable structure and tear resistance, and prolonged service life.

Description

Waterproof breathable PVC synthetic leather

Technical Field

The utility model relates to the technical field of synthetic leather, in particular to waterproof and breathable PVC synthetic leather.

Background

Synthetic leather is a plastic product which simulates the composition and structure of natural leather and can be used as a substitute material for the natural leather. The impregnated nonwoven fabric is generally used as a net layer, and the microporous polyurethane layer is used as a grain surface layer. The front and back sides of the leather are very similar to leather, and the leather has certain air permeability and is more similar to natural leather than common artificial leather. Is widely used for manufacturing shoes, boots, bags, balls and the like.

Chinese patent application publication No.: CN 216942091U, application publication date: 2022.07.12 the utility model discloses waterproof breathable synthetic leather, which comprises a plurality of composite leather sections, wherein the composite leather sections are horizontally equidistantly arranged, the side walls of one side of each two adjacent composite leather sections are fixedly connected through one wear-resistant leather section, two types of synthetic leather section alternating structural designs are adopted, namely, a plurality of single type synthetic wear-resistant leather sections and a plurality of composite type synthetic leather sections are arranged, the integral structural functions are various, one reinforcing leather strip is fixedly connected between the top wall middle parts of the composite leather sections and the wear-resistant leather sections, and the other reinforcing leather strip is fixedly connected between the bottom wall middle parts of the composite leather sections and the wear-resistant leather sections. The scheme has the following defects: the waterproof breathable leather surface is arranged on the side wall of the composite leather section, so that the overall waterproof breathable capability of the synthetic leather is reduced, and the waterproof breathable capability of the synthetic leather is poor.

In summary, synthetic leather has poor waterproof and breathable properties.

Disclosure of Invention

The utility model provides high-strength waterproof breathable PVC synthetic leather, and aims to overcome the defect of poor waterproof breathability of the synthetic leather in the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a waterproof ventilative PVC synthetic leather, includes basic unit, tie layer and isolation layer, and one side of basic unit and tie layer one side are passed through the isolation layer and are connected, and the opposite side of tie layer is connected with ventilative layer and waterproof layer, is equipped with the bleeder vent on the ventilative layer, is equipped with the micropore on the waterproof layer, and the bleeder vent is linked together with the micropore, and the opposite side of basic unit is connected with the wearing layer.

The connecting layer is connected with the basic unit through the isolation layer, one side and the connecting layer of isolation layer surface that the isolation layer is used for separating the basic unit, make the basic unit ventilate ventilatively to the external world through the isolation layer, the wearing layer is connected to the opposite side of basic unit makes synthetic leather frequent frictional internal surface one side have the wearability, in order to increase synthetic leather life, the connecting layer connects isolation layer (basic unit) and ventilative layer, make the stable in structure of basic unit be difficult for deformation, communicate isolation layer and ventilative layer simultaneously, make the base cloth get into the waterproof layer through the bleeder vent on isolation layer, connecting layer and the ventilative layer, the waterproof layer prevents that liquid from getting into the synthetic leather inner wall and reaching the water-proof effects, micropore and bleeder vent on the waterproof layer are linked together simultaneously and make synthetic leather wholly have the gas permeability, reach synthetic leather long service life and possess the effect of high strength's waterproof gas permeability simultaneously.

Preferably, the structure shape of the isolation layer is a net structure, a plurality of meshes are arranged on the isolation layer, and the meshes are square grids. The isolating layer is a net structure with a plurality of meshes, and the meshes are square structures, so that the meshes are uniformly distributed on the surface of the isolating layer, and the effect of improving the ventilation uniformity of the synthetic leather is achieved.

Preferably, the structure shape of the connecting layer is a net structure, a plurality of connecting holes are formed in the connecting layer, the shape and the size of the connecting holes are the same as those of the meshes, the connecting holes are communicated with the meshes, and the positions of the connecting holes and the meshes are staggered. The connecting layer is provided with a plurality of connecting holes on the surface and is in a net structure, the structures of the connecting holes and meshes are identical in size, the connecting holes and meshes are communicated and are staggered in position, so that the air permeability of the connecting layer and the isolation layer is guaranteed, the surface smoothness of the connecting layer is improved, and the stability of the synthetic leather structure is guaranteed.

Preferably, the connecting holes are communicated with the air holes, the air permeable layer comprises a first air permeable layer and a second air permeable layer, one side of the first air permeable layer is connected with the connecting layer, the other side of the first air permeable layer is connected with one side of the second air permeable layer, the aperture of the air holes on the first air permeable layer is larger than that of the air holes on the second air permeable layer, and the other side of the second air permeable layer is connected with the waterproof layer. The ventilative layer comprises first ventilative layer and second ventilative layer, and one side and the tie coat of first ventilative layer are connected, make the connecting hole communicate with each other with the bleeder vent, and the opposite side and the waterproof layer of second ventilative layer are connected, and the bleeder vent communicates with each other with the micropore simultaneously, and then mesh (connecting hole), bleeder vent on the first ventilative layer, bleeder vent on the second ventilative layer make the air current passageway form the awl shape, and then strengthen and improve ventilative efficiency and ensure waterproof simultaneously.

Preferably, the waterproof layer is made of thermoplastic polyurethane slurry paint. The waterproof layer is a thermoplastic polyurethane slurry coating layer on the breathable layer so as to enhance the waterproof property of the surface of the synthetic leather, and the micropores keep high air permeability.

Preferably, a fixing strip is connected between the wear-resistant layer and the base layer, and a ventilation groove is formed in the fixing strip. The wearing layer is connected in one side of the inboard of basic unit, connects through the fixed strip between wearing layer and the basic unit, has set up the ventilative groove of even interval on the synthetic leather simultaneously, makes the whole tear resistance intensity of synthetic leather increase simultaneously improve holistic gas permeability.

Preferably, the wear-resistant layer is made of nylon-polyester spinning materials. The wear-resistant layer is a direct contact layer on the inner wall of the synthetic leather, and an antifriction surface layer structure is formed by the nylon-polyester spinning material, so that the service life of the synthetic leather is prolonged while ventilation is achieved.

The beneficial effects of the utility model are as follows: the PVC synthetic leather has high water resistance, air permeability, high flatness, stable structure and tear resistance, and prolonged service life.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a schematic top view of the structure of the spacer layer;

FIG. 3 is a schematic top view of the connection of the barrier layer and the tie layer;

fig. 4 is a schematic top view of the structure of the wear layer.

In the figure: 1. the waterproof layer comprises a base layer, a connecting layer, a separating layer, a breathable layer, a waterproof layer, a micropore, an air hole, an abrasion-resistant layer, a wear-resistant layer, a mesh, a connecting hole, a first breathable layer, a second breathable layer, a fixing strip and a breathable groove.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature's illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "under" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "lower" may encompass both an upper and lower orientation. The device may be otherwise positioned (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, processes and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application.

As shown in fig. 1, a waterproof breathable PVC synthetic leather comprises a base layer 1, a connecting layer 2 and an isolation layer 3, wherein one side of the base layer 1 and one side of the connecting layer 2 are connected through the isolation layer 3, the other side of the connecting layer 2 is connected with a breathable layer 4 and a waterproof layer 5, micropores 6 are formed in the waterproof layer 5, ventilation holes 7 are formed in the breathable layer 4, the ventilation holes 7 are communicated with the micropores 6, and a wear-resistant layer 8 is connected to the other side of the base layer 1.

As shown in fig. 2, the structure of the isolation layer 3 is a net structure, a plurality of meshes 9 are arranged on the isolation layer 3, and the meshes 9 are square grids.

As shown in fig. 3, the structure of the connection layer 2 is a net structure, a plurality of connection holes 10 are arranged on the connection layer 2, the shape and the size of the connection holes 10 are the same as those of the meshes 9, the connection holes 10 are communicated with the meshes 9, and the connection holes 10 are staggered with the meshes 9.

As shown in fig. 1 and 3, the connection hole 10 is communicated with the ventilation hole 7, the ventilation layer 4 comprises a first ventilation layer 11 and a second ventilation layer 12, one side of the first ventilation layer 11 is connected with the connection layer 2, the other side of the first ventilation layer 11 is connected with one side of the second ventilation layer 12, the pore diameter of the ventilation hole 7 on the first ventilation layer 11 is larger than the pore diameter of the ventilation hole 7 on the second ventilation layer 12, and the other side of the second ventilation layer 12 is connected with the waterproof layer 5. The waterproof layer 5 is made of thermoplastic polyurethane slurry paint.

As shown in fig. 4, a fixing strip 13 is connected between the wear-resistant layer 8 and the base layer 1, and ventilation grooves 14 are formed in the fixing strip 13. The wear-resistant layer 8 is made of nylon-polyester spinning materials.

As shown in fig. 1-4: the side of the base layer 1 connected with the wear-resistant layer 8 is the inner side during manufacturing and use, and the ventilation property during inner side use is kept through the ventilation groove 14 between the base layer 1 and the wear-resistant layer 8.

The outer surface of the base layer 1 is coated with thermoplastic polyurethane slurry to form a waterproof layer 5 as the outer side surface, and micropores 6 on the outer side are small in caliber to prevent liquid from entering, so that the synthetic leather is waterproof.

The connecting holes 10 and the meshes 9 are larger square holes under the connection strength of the base layer 1 and the air-permeable layer 4, and the connecting holes 10 and the meshes 9 are staggered and crossed to each other when connected, so that the air permeability is kept and the smoothness of the surface of the synthetic leather is guaranteed.

When in connection, the inner side of the base layer 1 is connected with one side of the fixing strip 13, and the other side of the fixing strip 13 is connected with the wear-resistant layer 8 made of the nylon/polyester spinning material. The outside of the base layer 1 is connected with one side of the isolation layer 3, one side of the connecting layer 2 is connected with the other side of the isolation layer 3 in a staggered way through the positions of the connecting holes 10 and the meshes 9, the double-layer breathable layer 4 is connected with the other side of the connecting layer 2, the first breathable layer 11 is arranged between the second breathable layer 12 and the connecting layer 2, and the waterproof layer 5 with the thermoplastic polyurethane slurry coating is connected with the outside of the second breathable layer 12, so that the waterproof performance of the synthetic leather is realized.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The utility model provides a waterproof ventilative PVC synthetic leather, its characterized in that, includes basic unit (1), tie layer (2) and isolation layer (3), one side of basic unit (1) and tie layer (2) one side are connected through isolation layer (3), the opposite side of tie layer (2) is connected with ventilative layer (4) and waterproof layer (5), be equipped with micropore (6) on waterproof layer (5), be equipped with bleeder vent (7) on ventilative layer (4), bleeder vent (7) and micropore (6) are linked together, the opposite side of basic unit (1) is connected with wearing layer (8).

2. The waterproof breathable PVC synthetic leather according to claim 1, characterized in that the structural shape of the isolation layer (3) is a net structure, a plurality of meshes (9) are arranged on the isolation layer (3), and the meshes (9) are square grids.

3. The waterproof breathable PVC synthetic leather according to claim 2, wherein the structure of the connecting layer (2) is of a net structure, a plurality of connecting holes (10) are formed in the connecting layer (2), the shape and the size of the connecting holes (10) are the same as those of the meshes (9), the connecting holes (10) are communicated with the meshes (9), and the connecting holes (10) are staggered with the meshes (9).

4. A waterproof breathable PVC synthetic leather according to claim 3, characterized in that the connection hole (10) is in communication with the ventilation hole (7), the ventilation layer (4) comprises a first ventilation layer (11) and a second ventilation layer (12), one side of the first ventilation layer (11) is connected with the connection layer (2), the other side of the first ventilation layer (11) is connected with one side of the second ventilation layer (12), the pore diameter of the ventilation hole (7) on the first ventilation layer (11) is larger than the pore diameter of the ventilation hole (7) on the second ventilation layer (12), and the other side of the second ventilation layer (12) is connected with the waterproof layer (5).

5. A waterproof and breathable PVC synthetic leather according to claim 1 or 4, characterized in that the waterproof layer (5) is made of thermoplastic polyurethane slurry paint.

6. The waterproof breathable PVC synthetic leather according to claim 1, characterized in that a fixing strip (13) is connected between the wear-resistant layer (8) and the base layer (1), and a breathable groove (14) is formed in the fixing strip (13).

7. A waterproof and breathable PVC synthetic leather according to claim 1 or 6, characterized in that the wear layer (8) is made of a polyamide-polyester textile material.