A kind of production method of crease-free synthetic leather

A production method and technology for synthetic leather, applied in the field of synthetic leather, can solve the problems of increasing cost, reducing the softness and comfort performance of synthetic leather, increasing the hardness of synthetic leather, etc. The effect of good folding resistance

Active Publication Date: 2016-08-24
ANTA CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method of improving the folding resistance of synthetic leather is mainly in the dry TPU film coating process, but this process will increase the hardness of synthetic leather and reduce the softness and comfort of synthetic leather. In addition, due to the process of pasting TPU film on synthetic leather increase cost

Method used

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  • A kind of production method of crease-free synthetic leather
  • A kind of production method of crease-free synthetic leather
  • A kind of production method of crease-free synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Table 1.1 Formula of modified polyamide resin

[0032] material composition

weight

polyamide resin

100kg

Organic Montmorillonite

5kg

Antioxidant (tetraerythritol ester)

0.35kg

[0033] Table 1.2 Impregnation formula:

[0034]

[0035]

[0036] Table 1.3 Weight formula of adhesive layer polyurethane compounding liquid:

[0037]

[0038] First, prepare the corresponding materials according to the formulations in Tables 1.1 to 1.3, and the polyurethane solution with a solid content greater than 65%.

[0039] Further, the first material component is blended through a twin-screw extruder to realize melt intercalation and granulation. The processing temperature of this process is 75°C to 125°C; through this step, the modified polyamide resin is obtained .

[0040] Further, 100 kg of the modified polyamide resin and 30 kg of polyamide resin formed above are prepared for blend spinning, and the base fabric is formed...

Embodiment 2

[0049] Table 2.1 Formula of modified polyamide resin

[0050] material composition

weight

polyamide resin

100kg

Organic Montmorillonite

8kg

antioxidant

0.6kg

[0051] Table 2.2 Impregnation formula:

[0052]

[0053]

[0054] Table 2.3 Weight formula of polyurethane compounding liquid for adhesive layer:

[0055]

[0056] First, prepare the corresponding materials according to the formulations in Table 2.1 to 2.3, and the polyurethane solution with a solid content greater than 65%.

[0057] Further, the first material component is blended through a twin-screw extruder to realize melt intercalation and granulation. The processing temperature of this process is 75°C to 125°C; through this step, the modified polyamide resin is obtained .

[0058] Further, 100 kg of modified polyamide resin and 26 kg of polyamide resin formed above are prepared for blend spinning, and the base fabric is formed by traditional techniques...

Embodiment 3

[0067] Table 3.1 Modified polyamide resin formula

[0068] material composition

weight

polyamide resin

80kg

Organic Montmorillonite

1kg

antioxidant

0.2kg

[0069] Table 3.2 Impregnation formula:

[0070]

[0071]

[0072] Table 3.3 Weight formula of polyurethane compounding liquid for adhesive layer:

[0073]

[0074] First, prepare the corresponding materials according to the formulations in Table 3.1 to 3.3, and the polyurethane solution with a solid content greater than 65%.

[0075] Further, the first material component is blended by a twin-screw extruder to realize melt intercalation and granulation, and the processing temperature of this process is 75° C.; through this step, a modified polyamide resin is obtained.

[0076] Further, 100 kg of the modified polyamide resin and 25 kg of polyamide resin formed above are prepared for blend spinning, and the base fabric is formed by traditional techniques such as tex...

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Abstract

The invention discloses a method for producing crease-free synthetic leather. The method comprises the following steps: 1, preparing the following first material components: 80-100 parts of polyamide resin, 1-10 parts of organic montmorillonite and 0.2-0.8 part of an antioxidant; 2, preparing modified polyamide resin from the first material components; 3, preparing the following components in parts by weight: 100 parts of polyamide resin and 25-35 parts of modified polyamide resin; 4, processing and forming a base cloth fabric; 5, preparing the base cloth fabric, and dipping in polyving alcohol; 6, preparing 100 parts of polyester type polyurethane of which the solid content is 40%, 100-120 parts of dimethyl formamide, 10-15 parts of a pore-foaming agent, 1-4 parts of a surfactant, 5-10 parts of a solvent color material and 2-5 parts of a fluoride-containing high polymer; 7, taking out the base cloth fabric dipped in the step 5, and dipping into a solution of the step 6; 8, taking out the base cloth fabric dipped in the step 7, and washing with water; 9, drying and shaping; 10, adhering one pattern layer to the base cloth fabric treated in the step 8 through an adhesive layer. The synthetic leather produced by using the method is relatively good in crease resistance.

Description

technical field [0001] The invention relates to the field of synthetic leather, in particular to a method for crease-free synthetic leather. Background technique [0002] Synthetic leather is widely used in the shoe industry. Compared with genuine leather, synthetic leather has excellent physical properties and high cost performance, and its source is not limited, so it is widely used. Traditional synthetic leather is limited by its own manufacturing process and materials. After many times of bending during use, the surface of synthetic leather will form creases, which will greatly affect the appearance. [0003] In order to improve the problem of creases caused by multiple bending of traditional synthetic leather, a lot of research has been done on the folding resistance of synthetic leather in the industry. At present, the method of improving the folding resistance of synthetic leather is mainly in the dry TPU film process, but this process will increase the hardness of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/08B32B27/04B32B27/08B32B27/18B32B27/34B32B27/40B32B37/12B32B37/26B32B38/14
CPCB32B27/04B32B27/08B32B27/18B32B27/34B32B27/40B32B37/12B32B37/26B32B38/14D06N3/08
Inventor 刘超李苏
Owner ANTA CHINA
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