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Waterborne polyurethane coating transfer synthetic leather and manufacturing method

A technology of water-based polyurethane and manufacturing method, which is applied in the direction of chemical instruments and methods, synthetic resin layered products, textiles and papermaking, etc., can solve problems such as threats to human life and health, waste of organic solvents, and easy fires, and achieve superior performance, Improvement of working environment and reduction of product cost

Inactive Publication Date: 2010-03-10
烟台万华超纤股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

About 50% of the solvents in the dry-leather production process cannot be recovered and will be discharged into the surrounding air. This not only causes a lot of waste of organic solvents, but also will inevitably seriously affect the local environment and pose a great threat to human life and health. Inflammable and explosive, prone to fire and other accidents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The technological process of the manufacturing method of the transfer film synthetic leather of this example is:

[0035] Base cloth→dry transfer film making dough→aging→separation of paper and leather→inspection and warehousing

[0036] 1. Base fabric: Choose sea-island microfiber synthetic leather base fabric with high physical properties to meet the physical property requirements of transfer film synthetic leather.

[0037] 2. Dry transfer film making

[0038] Dry transfer film making surface, using polyurethane elastomer or polyurethane resin with high wear resistance and high resilience, meets the high performance requirements of transfer film synthetic leather for wear resistance, acid and alkali resistance, and adopts aging process to effectively solve the problem of transfer film synthetic leather Common problems such as lack of brightness, poor creases and scratches, etc., produce transfer film synthetic leather with high wear resistance and high brightness. ...

Embodiment 2

[0053] The difference between the manufacturing method technological process of the transfer film synthetic leather of this example and embodiment 1 is:

[0054] Water-based polyurethane resin is used for dry transfer film making. The proportion of use is as follows: 10 parts of polyurethane resin, 40 parts of water, 10 parts of black paste, 4 parts of leveling agent, 2 parts of thickener; adhesive layer: 100 parts of polyurethane resin, 30 parts of water, 4 parts of bridging agent, 3 parts of bridging accelerator.

[0055]Using the semi-dry lamination method, after the film is transferred, the paper leather is rolled up and sent to the curing room for curing. The curing conditions are: temperature 70 degrees, time 48 hours.

Embodiment 3

[0057] The difference between the manufacturing method technological process of the transfer film synthetic leather of this example and embodiment 1 is:

[0058] According to the parts by weight of the surface layer, 100 parts of water-based polyurethane resin, 100 parts of water, 30 parts of pigment, 10 parts of leveling agent, 10 parts of thickener, and 10 parts of anti-sticking agent;

[0059] According to parts by weight of the adhesive layer, 100 parts of polyurethane resin, 20 parts of water, 2 parts of pigment, and 15 parts of bridging accelerator.

[0060] The curing conditions are: temperature 120 degrees, time 30 hours.

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Abstract

The invention relates to waterborne polyurethane coating transfer synthetic leather and a manufacturing method, belonging to the technical field of synthetic leather and manufacturing methods. The manufacturing method of the waterborne polyurethane coating transfer synthetic leather is characterized in that the waterborne polyurethane coating transfer synthetic leather is manufactured by sequentially including the following steps: base cloth, surface formation by dry coating transfer, curing, separation of paper and leather, inspection and storage. Compared with solvent based polyurethane, thewaterborne polyurethane coating transfer synthetic leather has equivalent physical properties of the product, meets the requirement of application, uses the environmentally friendly waterborne polyurethane so that organic solvent which is harm to environmental protection is not contained in the product, and simplifies the production process because the working procedure of DMF recycling needed bysolvent-based products is reduced in a production process, thereby saving energy, protecting environment, meeting the restrictive requirements of foreign countries on the environmentally friendly polyurethane leather, reducing the quantity demand on production personnel, alleviating harm to human bodies, lowering the production cost and enabling the market competitiveness of the product to be strong.

Description

1. Technical field [0001] The invention relates to a polyurethane transfer film synthetic leather and a manufacturing method, belonging to the technical field of synthetic leather and its manufacturing method. 2. Background technology [0002] In the production of traditional polyurethane (PU) synthetic leather, solvent-based polyurethane resin is used as the basic raw material for the base layer and surface layer of traditional synthetic leather products, and the annual demand for polyurethane resin is more than 1.1 million tons. Most of its production process uses toluene, xylene, acetone, butanone (MEK), acetic acid, ethyl ester and dimethylformamide (DMF) as solvents. The amount of solvent used accounts for more than 60% of the amount of polyurethane resin used. About 50% of the solvents in the dry-leather production process cannot be recovered and will be discharged into the surrounding air. This not only causes a lot of waste of organic solvents, but also will inevita...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14B32B27/12
Inventor 李革刘振波王荣赵春湖徐德胜刘宗强吴法庆石静
Owner 烟台万华超纤股份有限公司
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