Water-based environment-friendly leather for shoes and preparation method of leather

A water-based, environment-friendly technology, applied in the field of polyurethane leather, can solve the problems of poor physical properties of polyurethane synthetic leather, non-delicate surface creases, complicated production process, etc., and achieve strong adhesion, good foaming effect, and low production cost. Effect

Inactive Publication Date: 2019-08-06
ZHEJIANG HEXIN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The surface creases are not delicate, and the wear resistance is poor;
[0005] 2. The production process is complicated and the production cost is high;
[0006] 3. The adhesion between the layers is weak and the foaming effect is poor, resulting in poor physical properties and poor performance of polyurethane synthetic leather

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method of water-based environmentally friendly leather for shoes, comprising the following steps:

[0045] A. Prepare the surface layer slurry and prepare the middle layer slurry;

[0046] B. Coat the prepared surface layer slurry on the release paper with a coating thickness of 0.1-0.15mm, then control the temperature of the oven to dry at 60-120°C and cool to form the surface layer;

[0047] C. Coat the prepared middle layer slurry on the surface layer with a coating thickness of 0.1-0.15mm, then control the temperature of the oven to dry at 60-120°C and cool to form the middle layer;

[0048]D. The foam layer slurry is mixed and evenly coated on the middle layer through the pouring machine (A / B metering and spouting) online, the coating thickness is 0.3~0.4mm, and then pre-baked to a semi-dry state, the oven temperature used is 60~ 120°C, the residence time in the oven is 50-120s;

[0049] E. Then attach it to the base cloth, dry and cross-link and cu...

Embodiment 2

[0064] A preparation method of water-based environmentally friendly leather for shoes, comprising the following steps:

[0065] A. Prepare the surface layer slurry and prepare the middle layer slurry;

[0066] B. Coat the prepared surface layer slurry on the release paper with a coating thickness of 0.1mm, then control the temperature of the oven to dry at 60-120°C and cool to form the surface layer;

[0067] C. Coat the prepared middle layer slurry on the surface layer with a coating thickness of 0.15mm, then control the temperature of the oven to dry at 60-120°C and cool to form the middle layer;

[0068] D. The foam layer slurry is mixed and evenly coated on the middle layer through the pouring machine (A / B metering and spouting) online, with a coating thickness of 0.3mm, and then pre-baked to a semi-dry state. The oven temperature used is 60-120°C , the residence time in the oven is 50s;

[0069] E. Then attach it to the base cloth, dry and cross-link and cure. The tempe...

Embodiment 3

[0081] A preparation method of water-based environmentally friendly leather for shoes, comprising the following steps:

[0082] A. Prepare the surface layer slurry and prepare the middle layer slurry;

[0083] B. Coat the prepared surface layer slurry on the release paper with a coating thickness of 0.15mm, then control the temperature of the oven to dry at 60-120°C and cool to form the surface layer;

[0084] C. Coat the prepared middle layer slurry on the surface layer with a coating thickness of 0.1mm, then control the temperature of the oven to dry at 60-120°C and cool to form the middle layer;

[0085] D. The foam layer slurry is mixed and evenly coated on the middle layer through the pouring machine (A / B metering and spouting) online, with a coating thickness of 0.4mm, and then pre-baked to a semi-dry state. The oven temperature used is 60-120°C , the residence time in the oven is 120s;

[0086] E. Then attach it to the base cloth, dry and cross-link and cure. The temp...

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Abstract

The invention discloses a preparation method of water-based environment-friendly leather for shoes. The preparation method comprises the following steps that A, a surface-layer sizing agent is prepared, and a middle-layer sizing agent is prepared; B, release paper is coated with the prepared surface-layer sizing agent, and after drying and cooling are conducted, a surface layer is formed; C, the surface layer is coated with the prepared middle-layer sizing agent, and after drying and cooling are conducted, a middle layer is formed; D, a foaming-layer sizing agent is uniformly mixed on line through a pouring machine (A / B metering and discharging), coats the middle layer and is pre-dried into a semi-dry state; E, then the foaming-layer sizing agent fits base cloth, drying, cross-linking curing and ripening are conducted, finally the release paper is stripped, and the water-based environment-friendly leather for the shoes is obtained. The preparation method is simple in production process, low in production cost, friendly to the environment and beneficial for the physical health of workers; folded wrinkles on the surface of the prepared water-based environment-friendly leather for theshoes are fine, and the leather has high wear resistance; the finished product has few DMF residues and is friendly to the environment and healthy; the leather has good physical performance and usingperformance.

Description

technical field [0001] The invention relates to the field of polyurethane leather, in particular to a water-based environment-friendly leather for shoes and a preparation method thereof. Background technique [0002] Polyurethane Synthetic Leather (Polyurethane Synthetic Leather) has the advantages of high strength, wear resistance, cold resistance, breathability, aging resistance, solvent resistance, soft texture, beautiful appearance, etc., and has good processing performance. It is an ideal imitation leather product instead of natural leather. Excellent leather. Polyurethane synthetic leather is widely used in clothing, shoemaking, luggage, furniture and other industries. The industrial production methods of polyurethane synthetic leather mainly include dry method and wet method. [0003] However, the common water-based polyurethane leather currently used also has the following problems: [0004] 1. The surface creases are not delicate, and the wear resistance is poor;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/14
CPCD06N3/0009D06N3/005D06N3/0088D06N3/0097D06N3/145D06N3/146D06N3/147D06N2209/0823D06N2209/1664D06N2209/1685D06N2211/106D06N2211/28
Inventor 周志军陈永张玉洲叶琦戴丽
Owner ZHEJIANG HEXIN NEW MATERIAL CO LTD
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