Leather finishing composition with washable jeans style and leather manufacturing process

A manufacturing process and composition technology, applied in the field of leather production and manufacturing, can solve the problems of leather discoloration, leather feel hardening, etc., and achieve the effects of improving strength, improving flexibility, and improving wear resistance.

Active Publication Date: 2020-01-10
JIAXING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the objectives of the present invention is to provide a washable leather finishing composition with a denim style, which solves the problems in the prior art that the leather fades after washing and the leather feels hard. The second objective of the present invention is to provide a combination of the finishing The manufacturing process of applying and making washable leather with denim style, the leather finished product produced by the present invention has a fabric style similar to denim and can be washed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The first embodiment of the present invention provides a washable denim style leather finishing composition, comprising 50 parts of blue pigment paste, 300 parts of film forming agent, 40 parts of matting agent, 50 parts of wax emulsion, 10 parts of thickener and 10 parts of the joint agent are prepared by mixing and stirring according to parts by weight.

[0030] Specifically, the blue pigment paste includes cobalt blue, and the blue pigment paste can color the leather surface, and when the finishing layer is not completely dried, it will be softened, so that the leather has the style of denim.

[0031] The composition of the film-forming agent includes polyurethane (PU) with a weight percent content of 5 to 10%, and the polyurethane is generated by reacting polyisocyanate with polyol, castor oil, oxidized polyethylene wax and long-chain fatty amine; the present invention adopts high toughness Polyurethane is used as a film-forming agent, and the weight percentage of m...

Embodiment 2

[0043] The second embodiment of the present invention provides a manufacturing process of washable denim style leather, comprising the following steps:

[0044] (1) Take the white sheepskin base, apply the finishing composition prepared according to the above formula, and use a roller coater with sheepskin texture to roll coat 2 times in the forward direction, so that the leather finishing composition is rolled on the leather surface, and the rolling speed is 2 m / min, the amount of each roller coating is 2g / square foot;

[0045] (2) Dry the leather after roller coating at 70° C. for 60 minutes, so that the leather is dried to a state that does not feel sticky to the hand;

[0046] (3) Place the dried leather in a full-automatic stainless steel drum and soften it for 80 minutes;

[0047] (4) Hang the softened leather to dry naturally.

[0048] Detection:

[0049] (1) Leather softness test:

[0050] The present invention expresses the softness of leather by measuring the so...

Embodiment 3

[0057] The third embodiment of the present invention provides a manufacturing process of washable denim style leather, comprising the following steps:

[0058] (1) Take the white sheepskin base, apply the finishing composition prepared according to the above formula, and use the roller coating machine with sheepskin texture to roll coat 4 times in the forward direction, so that the leather finishing composition is rolled on the leather surface, and the roller coating speed is 4 m / min, the amount of each roller coating is 4g / square foot;

[0059] (2) Dry the leather after roller coating at 80° C. for 40 minutes, so that the leather is dried to a state that does not feel sticky to the hand;

[0060] (3) Place the dried leather in a full-automatic stainless steel softening drum and soften it for 100 minutes;

[0061] (4) Hang the softened leather to dry naturally.

[0062] Detection:

[0063] (1) Leather softness test:

[0064] The present invention expresses the softness of...

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Abstract

The invention provides a leather finishing composition with washable jeans style and a leather manufacturing process, and relates to the field of leather production and manufacturing. According to theinvention, blue pigment paste contained in the coating composition is used, in the production process, a roller coater with sheepskin lines is used for coating the surface of leather with the coatingcomposition in a rolling mode, milling is conducted under the condition that the coating composition is not completely dried, and therefore the style of a leather finished product produced and manufactured through the method is similar to that of jeans cloth; a polyaziridine cross-linking agent is added into the coating composition for cross-linking, so that the leather coating has the characteristics of water resistance, washing resistance and high temperature resistance; the innovation point of the coating composition is that more grease and wax are added into the coating composition, and the grease, the wax and the cross-linking agent can be cross-linked, so that the strength and the flexibility of a coating film are favorably improved, and this is also the reason why the leather produced by the invention can be washed with water without affecting the leather hand feeling and color.

Description

technical field [0001] The invention relates to the field of leather production and manufacturing, in particular to a washable denim-style leather finishing composition and a leather manufacturing process. Background technique [0002] Leather is denatured and non-perishable animal skin obtained through physical and chemical processing such as depilation and tanning. It has natural grain and luster, and feels comfortable. Leather, national defense leather, industrial and agricultural leather, cultural and sporting goods leather, etc. [0003] The leather produced by the prior art does not have the style of denim, and the finishing layer of the finished leather will be damaged after being exposed to rain or washed with water, which will easily cause the color of the leather to fade, or cause color difference, and the feel of the leather will become hard, which will affect the use Effect; Based on the above-mentioned prior art, the present invention proposes a washable denim-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/63C09D7/43C09D7/42C09D7/61C14C11/00
CPCC09D175/14C09D7/63C09D7/43C09D7/42C09D7/61C14C11/00C14C11/003C08L2205/035C08L2205/025C08L75/04C08L23/30C08L1/284C08K3/36C08K5/3412
Inventor 洪新球赵自领余林潘张香花
Owner JIAXING UNIV
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