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A kind of breathable synthetic leather and preparation method thereof

A synthetic leather and wet process technology, applied in the direction of textiles and papermaking, etc., can solve the problems that the consumption of natural leather products cannot be replaced, the heat of human skin is discharged, and the air permeability is not as good as natural leather, so as to achieve excellent mechanical strength, smoothness and plumpness The effect of hand feeling, good air permeability and moisture permeability

Active Publication Date: 2017-03-22
DONGGUAN SUNGOAL LEATHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, because polyurethane polymer resin has excellent film-forming property and tight molecular structure after crystallization, it naturally forms a closed, waterproof and airtight PU surface layer, although the surface style and material of PU synthetic leather products are very similar to natural leather. However, because the air permeability is not as good as that of natural leather, especially when it is applied to clothing, shoes and other products, it cannot be developed into high-end products, and it has not been able to replace the use of natural leather products.
Since PU synthetic leather has no breathability, the clothing and shoes made of it cannot discharge the heat from the human skin, and it will easily cause peculiar smell after a long time. Therefore, consumers still prefer to use natural leather products, which will cause more ecological problems. Environmental damage

Method used

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  • A kind of breathable synthetic leather and preparation method thereof
  • A kind of breathable synthetic leather and preparation method thereof
  • A kind of breathable synthetic leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as Figures 1 to 3 As shown, a breathable synthetic leather provided in this embodiment, from bottom to top, the breathable synthetic leather structure includes base fabric layer 1, wet process PU layer 2, PU breathable binding layer 3, dry process breathable PU texture layer 4 And air-permeable treatment layer 5, base fabric layer 1 and wet-process PU layer 2 are all provided with several air-permeable micropores 6;

[0038] The dry-process breathable PU texture layer 4 includes the following components:

[0039]

[0040] PU breathable binding layer 3 comprises the following components:

[0041]

[0042] The particle size of wood flour is 5 μm-50 μm. Wood powder can not only reduce product cost, but also play the role of skeleton in the solidification process. When drying resin molding, the high temperature expansion and room temperature shrinkage of wood powder and foam booster are used in the process of drying resin molding The shaping effect of the pol...

Embodiment 2

[0060] The difference with embodiment 1 is:

[0061] The dry-process breathable PU texture layer 4 includes the following components:

[0062]

[0063] PU breathable binding layer 3 comprises the following components:

[0064]

[0065] The foam booster is suboleic acid monoethanolamide, the penetrating agent is fatty alcohol polyoxyethylene ether, the wetting agent is sodium dodecylbenzenesulfonate, and the curing agent is nano-level montmorillonite.

[0066] The thickness of the base fabric layer 1 is 0.05mm-0.5mm, the thickness of the wet PU layer 2 is 0.15mm, the thickness of the PU air-permeable binding layer 3 is 0.12mm, the thickness of the air-permeable treatment layer 5 is 0.12mm, and the dry-process air-permeable PU The thickness of the textured layer 4 is 0.2 mm.

[0067] The negative ion powder is tourmaline particles with a particle size of 5 μm-50 μm.

[0068] Its preparation method comprises the following steps:

[0069] The first step is to coat the we...

Embodiment 3

[0075] The difference with embodiment 1 is:

[0076] The dry-process breathable PU texture layer 4 includes the following components:

[0077]

[0078] The PU breathable tie layer includes the following components:

[0079]

[0080]

[0081] The foam booster is coconut oleic acid diethanolamide, the penetrating agent is sodium dioctyl sulfosuccinate, the wetting agent is dodecylbenzenesulfonic acid, and the curing agent is hydrophilic aliphatic polyisocyanate.

[0082] The thickness of the base fabric layer 2 is 0.4mm, the thickness of the wet-process PU layer 2 is 0.15mm, the thickness of the PU breathable binding layer 3 is 0.15mm, the thickness of the breathable treatment layer 5 is 0.15mm, and the dry-process breathable PU texture layer 4 The thickness is 0.15mm.

[0083] Negative ion powder is seabed ore particles with a particle size of 5 μm-50 μm.

[0084] Its preparation method comprises the following steps:

[0085] The first step is to coat the wet-proce...

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Abstract

The invention belongs to the technical field of leather, and in particular relates to breathable synthetic leather which comprises a base cloth layer, a wet processed PU layer, a PU breathable adhesion layer, a dry processed breathable PU pattern layer and a breathable treatment layer in sequence from bottom to top, wherein a plurality of breathable micro pores are formed in the base cloth layer and the wet processed PU layer. Compared with the prior art, the breathable synthetic leather is very good in breathability and moisture permeability, smooth and full in hand feeling, excellent in mechanical strength and thus approximate to natural leather, high-end products can be developed by using the leather, the amount of natural leather can be reduced, and thus the purpose of environment protection can be achieved; negative ions can be released, so that the breathable synthetic leather has the functions of purifying air and removing odor and harmful substances such as formaldehyde in a room, is particularly applicable to products in a relatively confined space, and is beneficial to health of environments and human bodies, and requirements of customers on higher and higher living quality can be met.

Description

technical field [0001] The invention belongs to the technical field of leather, and more specifically, the invention relates to a breathable synthetic leather and a preparation method thereof. Background technique [0002] PU synthetic leather, also known as polyurethane synthetic leather, is generally composed of a base fabric and a polyurethane coating layer. It has been widely used in luggage, clothing, shoes, vehicles and furniture, and its application range is quite common. [0003] However, because polyurethane polymer resin has excellent film-forming property and tight molecular structure after crystallization, it naturally forms a closed, waterproof and airtight PU surface layer, although the surface style and material of PU synthetic leather products are very similar to natural leather. However, because the air permeability is not as good as natural leather, especially when it is used in clothing, shoes and other products, it cannot be developed into high-end produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/14
CPCD06N3/0043D06N3/0059D06N3/0063D06N3/0088D06N3/145D06N2205/10D06N2209/123D06N2211/28
Inventor 曾皓叶孟堂王强
Owner DONGGUAN SUNGOAL LEATHER
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