TWM473300U - Artificial leather - Google Patents

Description

Artificial leather

An artificial leather, especially an artificial leather which is resistant to hydrolysis and gas permeability.

In modern society, leather is widely used, and leather traces can be seen on furniture surfaces, leather bags, shoes and so on. Natural leather, although its appearance, breathability, durability and other properties are very good, but the natural leather in the production needs to be tanned, mechanical, dyeing, drying, finishing and other complicated manufacturing procedures, not only time-consuming and its manufacturing costs are not high.

Due to the time-consuming, costly and animal-care factors of natural leather production, artificial leather is increasingly used, and polyurethane synthetic leather (PU synthetic leather) is similar in texture to natural leather and has wear resistance and softness. The advantage is one of the most commonly used artificial leathers. However, due to the nature of the material of polyurethane artificial leather, it is easily hydrolyzed in a humid environment, which causes the structure to be damaged, which not only affects its durability but also affects the appearance of polyurethane artificial leather. Furthermore, polyurethane artificial leather is not breathable, and if it is applied to footwear, it will not be suitable for users to wear for a long time. Therefore, it is necessary to develop an artificial leather which has the advantages of good gas permeability, hydrolysis resistance, and low manufacturing cost.

In order to overcome the shortcomings of the prior art, this creation provides a manual Leather comprising: a base layer, a joint layer, a polymer layer and a plurality of venting holes. One side of the base layer is connected to one side of the bonding layer, and the material of the bonding layer comprises ethylene vinyl acetate (EVA); one side of the polymer layer is connected to the other side of the bonding layer, and The material comprises an ethylene vinyl acetate copolymer; the base layer, the bonding layer and the polymer layer are press-formed and passed through the venting holes to obtain the artificial leather, and the venting holes penetrate the base layer, the bonding layer and the polymerization. The layer is used to increase the breathability of the artificial leather.

Preferably, the venting holes have a diameter in the range of 0.5 to 2.0 mm.

Preferably, the spacing between the center points of the venting holes is at least 5 mm.

Preferably, the other side of the polymer layer has a texture which adds visual appeal to the artificial leather.

Preferably, the polymer layer is obtained by exfoliating a polymer sheet having a thickness ranging from 0.8 to 3.5 mm.

Preferably, the base layer is a cloth, and the type of the cloth may be cotton burlap, velvet or non-woven fabric.

The artificial leather in the preferred embodiment of the present invention is obtained by pressing and molding the base layer, the joint layer and the polymer layer, and the material of the polymer layer comprises an ethylene vinyl acetate copolymer. The structure is not like polyurethane artificial leather will be hydrolyzed due to moisture, and the artificial leather is more like wearing the plurality of venting holes, so that the artificial leather of the present invention has the advantages of hydrolysis resistance and good gas permeability.

10‧‧‧ basal layer

20‧‧‧ joint layer

30‧‧‧ polymer layer

40‧‧‧ venting holes

50‧‧‧mixed formula

51‧‧‧ polymer particles

52‧‧‧Polymer sheet

60‧‧‧Vibrating screen

70‧‧‧Injector

1 is an exploded perspective view of a preferred embodiment of the present invention.

Figure 2 is a side elevational view of the preferred embodiment of the present invention.

FIG. 3 is a schematic diagram of a manufacturing process of a preferred embodiment of the present invention.

Referring to FIG. 1 and FIG. 2, the artificial leather in a preferred embodiment of the present invention comprises: a base layer 10, a bonding layer 20, a polymer layer 30, and a plurality of venting holes 40, one of the base layers 10 Connected to one side of the bonding layer 20, one side of the polymer layer 30 is connected to the other side of the bonding layer 20 and the other side of the polymer layer 30 has a grain, and the base layer 10, the bonding layer 20, and the polymerization layer The material layer 30 is press-formed into a single body and penetrates the venting holes 40. The permeable holes 40 extend through the base layer 10, the bonding layer 20 and the polymer layer 30; wherein the material of the bonding layer 20 comprises ethylene acetate. A vinyl ester copolymer, the material of the polymer layer 30 comprising an ethylene vinyl acetate copolymer.

As shown in FIG. 3, the ethylene vinyl acetate copolymer is used as a raw material and placed in a blender to be mixed to obtain a blended formula 50; the blended formula 50 is placed in a granulator. The mixed formula 50 is formed through the vibrating screen 60 in the granulator to form a plurality of polymer particles 51; the polymer particles 51 are emitted through the injection machine 70 to form a surface of the polymer sheet 52 having a texture: the polymer sheet After the body 52 is cooled, the polymer sheet 52 is peeled into a plurality of peeling sheets by a stripper, and the stripping sheets are respectively the polymer layer 30; the polymer layer 30, the bonding layer 20, and the base layer 10 are The vent holes 40 are then passed through the high temperature press forming to obtain the artificial leather.

In practical applications, the blended formula 50 further comprises a An artificial rubber such as polyisoprene rubber (IR), a foaming agent such as methamamide, and a bridging agent such as dicumyl peroxide (DCP).

In practical applications, the selected vibrating screen 60 holes have a diameter in the range of up to 3 mm, and the polymer particles 51 formed therethrough have a diameter ranging from 3 to 4 mm.

In practical applications, the operating conditions of the injector 70 used are between 150 and 180 degrees, and the heating time is between 300 and 500 seconds.

In practical applications, the polymer sheet 52 has a thickness ranging from 0.8 to 3.5 mm.

In practical applications, it is pressed by a hot press using an operating temperature of 100 to 130 degrees, an operating pressure of 20 to 30 kg/cm 2 and a time of at most 30 seconds.

In practical applications, the bonding layer 20 is a hot melt film which is formed by extruding a hot melt ethylene vinyl acetate copolymer.

In practical applications, the venting holes 40 have a diameter ranging from 0.5 to 2.0 mm, and the spacing between the center points of the venting holes 40 is at least 5 mm.

In practical applications, the base layer 10 is a non-woven fabric.

The above description is only a preferred example of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been disclosed above in the preferred embodiment, it is not intended to limit the present invention, and is generally in the art. The knowledge person, within the scope of this technical solution, can make some changes or modifications to the equivalent of the technical content disclosed above. Any equivalent modifications, equivalent changes and modifications to the above embodiments in accordance with the technical spirit of the present invention are still within the scope of the present technical solution.

10‧‧‧ basal layer

20‧‧‧ joint layer

30‧‧‧ polymer layer

40‧‧‧ venting holes

Claims (5)

An artificial leather comprising: a base layer; and a joint layer, one side of the joint layer being joined to one side of the base layer and the material of the joint layer comprising ethylene vinyl acetate (EVA); a polymer layer, one side of the polymer layer is joined to the other side of the bonding layer, and the material thereof comprises an ethylene vinyl acetate copolymer and a plurality of venting holes extending through the substrate layer, the bonding layer and Polymer layer. According to the artificial leather of claim 1, the venting holes have a diameter ranging from 0.5 to 2.0 mm. According to the artificial leather of claim 1, the distance between the center points of the vent holes is at least 5 mm. The artificial leather according to any one of claims 1 to 3, wherein the polymer layer has a texture on the other side. According to the artificial leather of claim 4, the base layer is a cloth, and the type of the cloth is cotton burlap, velvet or non-woven fabric.