Breathable synthetic leather and manufacture method thereof

A synthetic leather, wet-laid technology, applied in textiles and papermaking, etc., can solve the problems that cannot replace the usage of natural leather products, the hot air is discharged from human skin, and the air permeability is not as good as that of natural leather, etc., and achieves excellent mechanical strength, smoothness and plumpness. The effect of hand feeling and good breathability and moisture permeability

Active Publication Date: 2016-08-17
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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  • Breathable synthetic leather and manufacture method thereof
  • Breathable synthetic leather and manufacture method thereof
  • Breathable synthetic leather and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as Figure 1 to 3 As shown, this embodiment provides a breathable synthetic leather. From bottom to top, the breathable synthetic leather structure includes a base fabric layer 1, a wet PU layer 2, a PU breathable adhesion layer 3, and a dry breathable PU texture layer 4. And the breathable treatment layer 5, the base fabric layer 1 and the wet PU layer 2 are each provided with several breathable micropores 6;

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

[0039]

[0040] The PU air-permeable binding layer 3 includes the following components:

[0041]

[0042] The particle size of wood powder is 5μm-50μm. Wood powder can not only reduce product costs, but also play a role in the solidification process. The high temperature expansion and normal temperature shrinkage of wood powder during the drying process of resin molding (80℃-50℃) and foaming agent The styling effect of the polyurethane resin makes the polyurethane resin pr...

Embodiment 2

[0060] The difference from Example 1 is:

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

[0062]

[0063] The PU air-permeable binding layer 3 includes the following components:

[0064]

[0065] The foaming agent is oleic acid monoethanolamide, the penetrating agent is fatty alcohol polyoxyethylene ether, the wetting agent is sodium dodecylbenzene sulfonate, and the curing agent is nanometer 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 breathable adhesion layer 3 is 0.12mm, the thickness of the breathable treatment layer 5 is 0.12mm, and the thickness of the dry breathable PU The thickness of the texture layer 4 is 0.2 mm.

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

[0068] The preparation method includes the following steps:

[0069] The first step is to coat the wet PU layer on the base ...

Embodiment 3

[0075] The difference from Example 1 is:

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

[0077]

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

[0079]

[0080]

[0081] The foaming agent is coconut oil acid diethanolamide, the penetrating agent is dioctyl sulfosuccinate sodium salt, the wetting agent is dodecylbenzene sulfonic 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 PU layer 2 is 0.15mm, the thickness of the PU breathable adhesion layer 3 is 0.15mm, the thickness of the breathable treatment layer 5 is 0.15mm, and the dry method breathable PU pattern layer 4 The thickness is 0.15mm.

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

[0084] The preparation method includes the following steps:

[0085] The first step is to coat the wet PU layer on the base fabric. 2: The base...

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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. 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 making luggage, clothing, shoes, vehicles and furniture, and its application range is quite common. [0003] However, because polyurethane polymer resin has excellent film-forming properties and compact molecular structure after crystallization, it naturally forms a sealed, waterproof and air-tight 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 can no longer be developed for high-end...

Claims

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Application Information

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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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