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Making method of foaming PU (polyurethane) leather

A production method and polyurethane technology, applied in chemical instruments and methods, lamination auxiliary operations, lamination and other directions, can solve the problems of lack of elasticity, overall dryness and stiffness of artificial leather, and achieve the effect of full pattern, full hand feeling and strong sensuality

Active Publication Date: 2014-01-15
KUNSHAN XIEFU NEW MATERIALS LTD BY SHARE LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional artificial leather The traditional artificial leather is composed of a base cloth layer, a dry bonding layer, a dry middle layer and a dry surface layer. Each layer is a flat structure, which makes the artificial leather as a whole shriveled and stiff, with no elasticity and poor hand feeling. far from genuine leather

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0015] Embodiment: a kind of preparation method of polyurethane foam PU leather, concrete steps are as follows:

[0016] Step 1: Polyurethane dry surface layer resin mixing ingredients:

[0017] Mix 100kg of polyurethane dry-process surface layer resin, 15-20kg of dimethylformamide, 15-20kg of butanone, 15-20kg of toluene, 0.5-1.0kg of additives and 3-5kg of toner, and stir at a speed of 2500rpm-2800rpm , stir for 10-15 minutes;

[0018] Step 2: Polyurethane foaming PU resin mixing ingredients:

[0019] Mix 100kg of polyurethane foaming PU resin, 15-20kg of heavy calcium carbonate, 1.5-2kg of foaming agent, 10-15kg of dimethylformamide, and 5-8kg of color paste and stir at a speed of 500rpm-800rpm for 20- 40 minutes, filter and set aside;

[0020] Step Three: Polyurethane Bonding Layer Resin Mixing Ingredients:

[0021] Mix 100kg of bonding layer resin, 10-15kg of dimethylformamide, 10-15kg of methyl ethyl ketone, and 10-15kg of toluene, then stir at high speed for 10-15 m...

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PUM

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Abstract

The invention discloses a making method of foaming PU (polyurethane) leather, the method is as follows: 100 kg of polyurethane dry-method surface layer resin, 15-20 kg of dimethyl formamide, 15-20 kg of butanone, 15-20 kg of toluene, 0.5-1.0 kg of an additive and 3-5 kg of color powder are evenly mixed to obtain a polyurethane dry-method surface layer resin ingredient, 100 kg of foaming PU (polyurethane) resin; 15-20 kg of heavy calcium carbonate, 1.5-2 kg of a foaming agent, 10-15 kg of the dimethyl formamide and 5-8 kg of color paste are evenly mixed to obtain a foaming PU (polyurethane) resin mixed ingredient; 100 kg of bonding layer resin, 10-15 kg of the dimethyl formamide, 10-15 kg of the butanone and 10-15 kg of the toluene are evenly mixed to obtain a polyurethane bonding layer resin mixed ingredient; release paper is successively scraped and coated with the above three mixed ingredients, then a knitted fabric substrate is bonded for drying, and the artificial leather obtained by the making method is high in resilience, full in hand feeling and pattern, strong in sensual appeal and is hydrolysis resistant.

Description

technical field [0001] The invention relates to a method for making artificial leather, in particular to a method for making polyurethane foamed PU leather. Background technique [0002] Traditional artificial leather The traditional artificial leather is composed of a base cloth layer, a dry bonding layer, a dry middle layer and a dry surface layer. Each layer is a flat structure, which makes the artificial leather as a whole shriveled and stiff, with no elasticity and poor hand feeling. Far from genuine leather. Contents of the invention [0003] In order to overcome the above-mentioned defects, the present invention provides a method for making polyurethane foamed PU leather. The method for making polyurethane foamed PU leather is simple in process, the product is full of elasticity, full in hand feeling, surpassing real leather, strong in sensuality, and high in physical properties and hydrolysis resistance. [0004] The technical scheme that the present invention ado...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/02B32B38/16B32B27/40D06N3/12C08J9/04C08L75/04C08K3/26
Inventor 张凤吴平倪爱平邢昱
Owner KUNSHAN XIEFU NEW MATERIALS LTD BY SHARE LTD
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