Skin-friendly breathable synthetic leather

Abstract

The utility model relates to synthetic leather technical field especially relates to a kind of skin-friendly breathable synthetic leather.It solves the technical problem that traditional synthetic leather skin-friendly and poor breathability, the utility model utilizes the preliminary breathability structure of rectangular array arc-shaped protrusion, point broken line connection and micro-vent hole formed by surface layer setting, utilizes the point broken line only connected adjacent arc-shaped protrusion edge area of setting, reduce the obstruction to breathable channel, while hollow cavity and micro-vent hole orthographic projection one-to-one correspondence, ensure that air accurately and smoothly circulate, and in independent honeycomb hollow cavity structure increases air circulation space, through the structure for the setting of multilevel breathable channel, the effective breathability of synthetic leather can be realized.

Description

Technical Field

[0001] This utility model relates to the field of synthetic leather technology, and in particular to a skin-friendly and breathable synthetic leather. Background Technology

[0002] Synthetic leather has been widely used to replace natural leather in clothing, home furnishings, footwear and other fields due to its advantages such as low cost, controllable performance and easy mass production.

[0003] Existing synthetic leathers mostly have a smooth resin coating or regular planar embossing. When in contact with the skin, they tend to have a "cold and hard plastic feel" and a large contact area. Furthermore, due to their simple structure, the middle layer is mostly ordinary sponge or a single layer of knitted fabric, which renders the surface ventilation holes ineffective. As a result, the overall breathability is poor and cannot meet the breathing needs of human skin.

[0004] Therefore, there is an urgent need for a skin-friendly and breathable synthetic leather that can improve the softness and breathability of the skin. Utility Model Content

[0005] Therefore, to address the aforementioned problems, this invention proposes a skin-friendly and breathable synthetic leather. It solves the technical problems of poor skin-friendliness and breathability in traditional synthetic leather.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: including a surface layer, an intermediate layer and a base layer arranged sequentially from top to bottom; the outer surface of the surface layer is provided with a plurality of arc-shaped protrusions; the plurality of arc-shaped protrusions are arranged in a rectangular array; any four adjacent arc-shaped protrusions forming a rectangle are connected by point-break lines; and micro-ventilation holes penetrating the surface layer are opened at the intersection of the point-break lines.

[0007] The intermediate layer is an elastic fiber layer, and the micro-ventilation pores are connected to the internal space of the intermediate layer.

[0008] Furthermore, the point break line is formed by a hot pressing process, the pressing depth of the point break line is 1 / 3 of the surface thickness, and the point break line only connects the edge areas of four adjacent arc-shaped protrusions.

[0009] Furthermore, the elastic fiber layer adopts a three-dimensional spaced knitting structure, which includes an upper fiber layer, a hollow cavity, and a lower fiber layer connected sequentially from top to bottom. The hollow cavity is connected to micro-ventilation holes, the upper fiber layer is woven together with the surface layer, and the lower fiber layer is bonded to the base layer.

[0010] Furthermore, the upper and lower fiber layers have the same structure, with the upper fiber layer being woven from fine denier polyester and the lower fiber layer being woven from coarse denier polyester.

[0011] Furthermore, both the fine denier polyester and the coarse denier polyester are mixed with 30% bamboo fiber yarn, and the bamboo fiber yarn 304 is wound with the polyester in a spiral shape.

[0012] Furthermore, the hollow cavity adopts an independent honeycomb structure.

[0013] Furthermore, the orthographic projection position of the hollow cavity corresponds one-to-one with the micro-vent holes.

[0014] Furthermore, the lower surface of the substrate layer is laminated with a breathable membrane, which is a PTFE microporous membrane.

[0015] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0016] This invention utilizes a rectangular array of arc-shaped protrusions, dotted line connections, and micro-ventilation holes on the surface to form a preliminary breathable structure for synthetic leather. The dotted lines connect only the edge areas of adjacent arc-shaped protrusions, reducing obstruction to the breathable channels. At the same time, the hollow cavity and the micro-ventilation holes are projected one-to-one, ensuring accurate and smooth airflow. Furthermore, the independent honeycomb-shaped hollow cavity structure increases the airflow space. Through the above structure, which provides multi-layered breathable channels, effective breathability of the synthetic leather can be achieved.

[0017] By setting a three-dimensional spaced knitted structure in the middle layer, utilizing the micro-ventilation holes on the surface to connect the hollow cavity, and using fine denier polyester weaving in the upper fiber layer, the synthetic leather's soft and delicate feel is enhanced when in contact with the skin. At the same time, because 30% bamboo fiber yarn is mixed into the fine and coarse denier polyester, the natural moisture absorption and antibacterial properties of bamboo fiber can quickly absorb and expel sweat from the skin surface, reduce bacterial growth, keep the skin dry and hygienic, and improve the user's comfort during long-term use. Attached Figure Description

[0018] Figure 1 This is a partial structural schematic diagram of a skin-friendly and breathable synthetic leather according to the present invention;

[0019] Figure 2 This is a cross-sectional structural diagram of a skin-friendly and breathable synthetic leather according to this utility model;

[0020] Figure 3 A schematic diagram of the winding structure of bamboo fiber yarn of this utility model;

[0021] In the diagram: Surface layer-1, base layer-2, intermediate layer-3, arc-shaped protrusion-101, dotted line-102, micro-ventilation hole-103, upper fiber layer-301, lower fiber layer-302, hollow cavity-303, bamboo fiber yarn-304. Detailed Implementation

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0023] refer to Figures 1-3 This embodiment provides a skin-friendly and breathable synthetic leather, the structure of which includes a top layer 1, a middle layer 3 and a base layer 2 arranged from top to bottom. The outer surface of the top layer 1 is provided with a plurality of arc-shaped protrusions 101, which are arranged in a rectangular array. Any four adjacent arc-shaped protrusions 101 that form a rectangle are connected by a dotted line 102. The intersection of the dotted line 102 is provided with a micro-ventilation hole 103 that penetrates the top layer 1.

[0024] The point break line 102 is formed by hot pressing. The hot pressing equipment used is a common flat plate hot press. The pressing depth of the point break line 102 is 1 / 3 of the thickness of the surface layer 1. The point break line only connects the edge areas of four adjacent arc-shaped protrusions 101. This setting can minimize the obstruction to the air passage.

[0025] The height of the arc-shaped protrusion 101 is set to 0.3mm. This height can form a clear three-dimensional structure, increase the contact area between the surface layer 1 and the outside world, and enhance the three-dimensionality of the synthetic leather surface layer 1. At the same time, since the arc-shaped protrusion 101 is evenly distributed on the surface layer 1, it can provide a suitable space for setting the dotted line 102 and the micro ventilation hole 103.

[0026] The improved synthetic leather intermediate layer has an elastic fiber layer 3, with micro-ventilation holes 103 connected to the internal space of the intermediate layer. The hollow cavity 303 adopts an independent honeycomb structure, which can evenly distribute external pressure, allowing the synthetic leather to quickly return to its original shape when subjected to pressure. At the same time, the orthographic projection position of the hollow cavity 303 corresponds one-to-one with the micro-ventilation holes 103, ensuring that air can accurately and smoothly enter the hollow cavity 303 of the intermediate layer 3 from the micro-ventilation holes 103 on the surface, forming an efficient ventilation channel.

[0027] Specifically, the elastic fiber layer adopts a three-dimensional spaced knitting structure, which includes an upper fiber layer 301, a hollow cavity 303, and a lower fiber layer 302 connected sequentially from top to bottom. The hollow cavity 303 is connected to micro-ventilation holes 103. The upper fiber layer 301 and the surface layer 1 are knitted together using a common computerized flat knitting machine, which can precisely control the number of stitches, density, and pattern. The lower fiber layer 302 is bonded to the base layer 2 with hot melt adhesive. The hot melt adhesive used is polyamide hot melt adhesive, which has the advantages of high bonding strength and good water resistance. During the bonding process, the bonding temperature is controlled at 120℃, the pressure at 1.5MPa, and the time at 10s to ensure that the lower fiber layer and the base layer are tightly bonded and not easily delaminated. Among them, the upper fiber layer 301 and the lower fiber layer 302 have the same structure. The upper fiber layer 301 is woven with fine denier polyester, and the lower fiber layer 302 is woven with coarse denier polyester.

[0028] Both fine denier polyester and coarse denier polyester are blended with 30% bamboo fiber yarn 304. The bamboo fiber yarn 304 and polyester are wound in a spiral shape. The softness of the fine denier polyester provides a comfortable touch and feels delicate when in contact with the skin. The natural moisture absorption and antibacterial properties of bamboo fiber can improve the hygiene of use, while the high strength and abrasion resistance of coarse denier polyester can withstand external friction and stretching, protecting the internal structure of the synthetic leather.

[0029] The lower surface of the substrate layer 2 is laminated with a breathable membrane, which is a PTFE microporous membrane. The lamination process adopts a hot-press lamination process, and the hot-press lamination machine used can precisely control the temperature, pressure and time.

[0030] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A skin-friendly and breathable synthetic leather, characterized in that, The material includes a top layer (1), a middle layer (3), and a base layer (2) arranged sequentially from top to bottom. The outer surface of the top layer (1) is provided with a plurality of arc-shaped protrusions (101). The plurality of arc-shaped protrusions (101) are arranged in a rectangular array. Any four adjacent arc-shaped protrusions (101) that form a rectangle are connected by a point break line (102). A micro air vent (103) penetrating the top layer (1) is provided at the intersection of the point break line (102). The intermediate layer (3) is an elastic fiber layer, and the micro-ventilation holes (103) are connected to the internal space of the intermediate layer.

2. The skin-friendly and breathable synthetic leather according to claim 1, characterized in that: The point break line (102) is formed by hot pressing. The pressing depth of the point break line (102) is 1 / 3 of the thickness of the surface layer (1). The point break line only connects the edge areas of four adjacent arc-shaped protrusions (101).

3. The skin-friendly and breathable synthetic leather according to claim 1, characterized in that: The elastic fiber layer adopts a three-dimensional spaced knitting structure, which includes an upper fiber layer (301), a hollow cavity (303), and a lower fiber layer (302) connected sequentially from top to bottom. The hollow cavity (303) is connected to a micro-ventilation hole (103). The upper fiber layer (301) is woven together with the surface layer (1), and the lower fiber layer (302) is bonded to the base layer (2).

4. The skin-friendly and breathable synthetic leather according to claim 3, characterized in that: The upper fiber layer (301) and the lower fiber layer (302) have the same structure. The upper fiber layer (301) is woven with fine denier polyester, and the lower fiber layer (302) is woven with coarse denier polyester.

5. The skin-friendly and breathable synthetic leather according to claim 4, characterized in that: Both the fine denier polyester and the coarse denier polyester are mixed with 30% bamboo fiber yarn (304), and the bamboo fiber yarn (304) and the polyester are wound in a spiral shape.

6. The skin-friendly and breathable synthetic leather according to claim 3, characterized in that: The hollow cavity (303) adopts an independent honeycomb structure.

7. The skin-friendly and breathable synthetic leather according to claim 6, characterized in that: The orthographic projection position of the hollow cavity (303) corresponds one-to-one with the micro air vent (103).

8. The skin-friendly and breathable synthetic leather according to claim 1, characterized in that: The lower surface of the base layer (2) is coated with a breathable membrane, which is a PTFE microporous membrane.

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