Method for making aqueous polyurethane elastic suede leather

A water-based polyurethane and suede technology, applied in textiles and papermaking, can solve problems such as human injury and environmental pollution

Inactive Publication Date: 2007-04-25
慈文传媒股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The solvents used in the impregnation tank include dimethylformamide (DMF), butanone (MEK), toluene (...

Method used

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  • Method for making aqueous polyurethane elastic suede leather

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Experimental program
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Embodiment 1

[0029] 1. Ingredients

[0030] Waterborne polyurethane: UL-5020, solid content 20%, 100 parts;

[0031] Pure water: 10 parts;

[0032] Water-based colorant: orange-10 1.0 parts;

[0033] Thickener: 0.5 parts of HEUR-C;

[0034] 2. Impregnation speed: 5 m / min.

[0035] 3. Drying temperature: 120°C.

[0036] 4. Gap between impregnated rollers: 0.5mm.

Embodiment 2

[0038] 1. Ingredients

[0039] Waterborne polyurethane: UL-5020, solid content 20%, 100 parts;

[0040] Pure water: 50 parts;

[0041] Water-based colorant: orange-10 0.5 part;

[0042] Thickener: 0.3 parts of HEUR-C;

[0043] 2. Impregnation speed: 5 m / min.

[0044] 3. Drying temperature: 120°C.

[0045] 4. Gap between the impregnation rollers: 0.6mm.

Embodiment 3

[0047] 1. Ingredients

[0048] Waterborne polyurethane: UL-5020, solid content 20%, 100 parts;

[0049] Pure water: 100 parts;

[0050] Water-based colorant: orange-10 0.5 parts;

[0051] Thickener: 0.2 parts of HEUR-C;

[0052] 2. Impregnation speed: 5 m / min.

[0053] 3. Drying temperature: 120°C.

[0054] 4. Gap between the impregnation rollers: 0.6mm.

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Abstract

The invention relates to a production method for water-based polyurethane elastic chammy suede leather. The procedure is that a. polyurethane is coated to the elastic island substrate of chammy suede; b. it is dried and formed by hot setting machine; c. chammy suede leather is made by roughing. Wherein, the substrate in a step is PTT/PET island chammy suede with PTT island component. Said coating process for polyurethane is that the substrate is set in dipping tank with aqueous polyurethane dispersion and dipped. By the dipping operation for substrate by polyurethane, it decreases freezing, water washing procedures compared with original technology that the leather is dried directly in hot setting machine after dipped. The production cost is lessened and pollution is decreased largely because a mass of organic media is spared. Compared with chammy suede fabric made by island fiber with nylon or nylon6, chosen substrate made by island fiber with PTT is provided with good elastic expansion.

Description

technical field [0001] The invention relates to a polyurethane synthetic leather manufacturing technology and a method for preparing water-based polyurethane elastic suede suede leather. Background technique [0002] Polyurethane synthetic leather is made by coating polyurethane resin on the base cloth. The existing production of polyurethane elastic suede suede leather uses solvent-based polyurethane resin as the basic raw material, and is processed by impregnation process: the elastic sea-island suede base cloth is introduced into an impregnation tank equipped with solvent-based polyurethane, and the base cloth is impregnated with Polyurethane is applied, solidified in a DMF solution solidification tank, washed with water, dried in a drying and setting machine, and then finished by sanding. The solvents used in the impregnation tank include dimethylformamide (DMF), butanone (MEK), toluene (TOL), etc., which not only pollute the environment, but also have certain harmful e...

Claims

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Application Information

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IPC IPC(8): D06N3/14
Inventor 许志王艳丽沈玉美陈明磊汪旗
Owner 慈文传媒股份有限公司
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