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A preparation method of super hydrolysis-resistant high-stripping elastic nubuck leather

A nubuck leather with high peeling technology, which is applied in the direction of roughening, textile and papermaking, fabric surface trimming, etc. It can solve the problems of low peel strength, low quality, good color development, etc., and achieve crispness and dimensional stability Good, easy to control production and processing, fine and uniform structure

Active Publication Date: 2017-10-10
ANHUI ANLI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the quality of the existing hydrolysis-resistant elastic nubuck leather in the domestic market is not high, and there are more or less uneven cell structures, low peel strength, poor myogenicity, poor color development, and slippery surface. Defects such as bad feeling of refreshment
There is a lack of elastic nubuck leather that can simultaneously have the advantages of good hydrolysis resistance, high peel strength, good myogenicity, good color development, and high surface smoothness. These defects limit the use of elastic nubuck leather to a large extent. Applications in shoes, bags, furniture and some high-end consumer products

Method used

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  • A preparation method of super hydrolysis-resistant high-stripping elastic nubuck leather
  • A preparation method of super hydrolysis-resistant high-stripping elastic nubuck leather
  • A preparation method of super hydrolysis-resistant high-stripping elastic nubuck leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of wet bass: use a weight of 220g / m 2 , the width is 1.6m, and the black imitation cotton wool of thickness 0.8mm is used as the base cloth of wet method bass, and the physical properties of the base cloth of the present invention are compared with other base cloths at present and see Table 5; The cloth is placed on the cloth rack and sent to the wet-laid bass production line, which is sequentially processed through the pre-condensation tank, ironing roller, coating machine, main condensation tank, washing tank, oven, and cooling roller to make nubuck wet-laid bass, bass Roll up and set aside. Among them, the coating slurry formula of the wet process base is shown in Table 1. During the production and processing of the wet process base, the process parameters of each part of the wet process production line are set as follows: the DMF concentration in the pre-coagulation tank is 30%, the production speed 8m / min, production line tension 0.08MPa, cutter head g...

Embodiment 2

[0037] Preparation of wet bass: use a weight of 240g / m 2 , with a width of 1.7m and a thickness of 0.9mm, the pink imitation cotton wool is used as the base cloth of the wet process bass. The physical properties of the base cloth of the present invention are compared with other base cloths at present. See Table 5; The cloth is placed on the cloth rack and sent to the wet-laid bass production line, which is sequentially processed through the pre-condensation tank, ironing roller, coating machine, main condensation tank, washing tank, oven, and cooling roller to make nubuck wet-laid bass, bass Roll up and set aside. Among them, the coating slurry formula of the wet process base is shown in Table 2. During the production and processing of the wet process base, the process parameters of each part of the wet process production line are set as follows: the DMF concentration in the pre-coagulation tank is 40%, the production speed 12m / min, production line tension 0.12MPa, cutter hea...

Embodiment 3

[0041] Preparation of wet bass: use a weight of 230g / m 2 , with a width of 1.65m and a thickness of 0.85mm, the blue imitation cotton wool is used as the base cloth of the wet process bass. The physical properties of the base cloth of the present invention are compared with other base cloths at present in Table 5; the smooth surface of the base cloth is selected as the coating surface. The base fabric is placed on the cloth rack and sent to the wet-laid bass production line, which is sequentially processed by the pre-condensation tank, ironing roller, coating machine, main condensation tank, washing tank, oven, and cooling roller to make nubuck wet-laid bass. Bass rolls back up. Among them, the coating slurry formula of the wet process base is shown in Table 3. During the production and processing of the wet process, the process parameters of each part of the wet process production line are set as follows: the DMF concentration in the pre-coagulation tank is 35%, the productio...

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Abstract

The invention discloses a preparation method of ultra-hydrolysis-resisting high-peeling elastic nubuck leather. The preparation method comprises the following steps: selecting warp-knitting elastic spun cotton wool as basic cloth; selecting hydrolysis-resisting nubuck leather resin (SW-35NB) researched by Hefei Anli Polyurethane New Material Co., Ltd and hydrolysis-resisting wet resin (HX-3022) of Jiaxing Hexin Chemical Industry Co., Ltd; mixing and matching the resin with a DMF water solution and an efficient pore pattern adjusting agent and the like to obtain coating slurry; and optimally designing a proportion of a coating slurry formula and matching specific process conditions to prepare the elastic nubuck leather which has a fine, dense and uniform foam pore structure, strong leather wool feeling and peeling strength being more than 60N / 3cm, and has excellent physical properties that the peeling strength still can keep 70% after the elastic nubuck leather resists hydrolysis under the conditions that the temperature is 25 DEG C, 10% NaOH is used and the time is 24 hours.

Description

technical field [0001] The invention relates to a polyurethane synthetic leather process, in particular to a method for preparing elastic nubuck leather. Background technique [0002] At present, the quality of the existing hydrolysis-resistant elastic nubuck leather in the domestic market is not high, and there are more or less uneven cell structures, low peel strength, poor myogenicity, poor color development, and slippery surface. Defects such as poor refreshment. There is a lack of elastic nubuck leather that can simultaneously have the advantages of good hydrolysis resistance, high peel strength, good myogenicity, good color development, and high surface smoothness. These defects limit the use of elastic nubuck leather to a large extent. Applications in shoes, bags, furniture and some high-end consumer products. Contents of the invention [0003] In view of the above problems, the present invention provides a method for preparing a nubuck leather product with simple...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06C11/00
CPCD06N3/0009D06N3/004D06N3/0043D06N3/142D06N2201/042D06N2205/24D06N2207/00D06N2209/0807D06N2209/123D06N2209/1628
Inventor 胡国金陈周迟红梅程艳西黄万里杜先炳朱福俭阮仁祥阚道俊
Owner ANHUI ANLI MATERIAL TECH
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