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Washable leather finishing composition and leather manufacturing process

A manufacturing process and composition technology, which is applied in the field of washable leather finishing composition and leather manufacturing process, can solve the problems of leather with color difference, leather that cannot be washed with water, and leather fading, so as to prevent fading, improve wear resistance, increase The effect of wet rub resistance

Active Publication Date: 2019-11-29
海宁市芬尼司皮革科技服务有限公司 +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, which solves the problems in the prior art of leather fading, color difference and hardened leather feel after washing. The second objective of the present invention is to provide a method for spraying the finishing composition On the surface of the leather and make the manufacturing process of washable leather, improve the technical problem that the leather cannot be washed in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The first embodiment of the present invention provides a washable leather finishing composition, including 30 parts of colorant, 300 parts of film-forming agent, 25 parts of wax emulsion, 50 parts of casein, 10 parts of crosslinking agent, and polysiloxane water emulsion 10 parts and 700 parts of water are mixed and stirred according to parts by weight.

[0032] specific,

[0033] The coloring agent is a kind of black pigment paste with carbon black as the main component. Generally, the leather coating will use the pigment paste to cover the damage and improve the brightness of the surface color. When the leather grade is very good, the pigment paste can be used without the colorant. To improve the color of the leather surface or cover the disabled, the pigment paste has good stability.

[0034] The composition of the film-forming agent includes modified polyurethane (PU) with a weight percent content of 5 to 10%, and the modified polyurethane is formed by reacting pol...

Embodiment 2

[0048] The second embodiment of the present invention provides a manufacturing process of washable leather, comprising the following steps:

[0049] (1) placing the prepared washable leather finishing composition in the raw material cavity of the spraying machine;

[0050] (2) Spraying the finishing composition on the leather surface by a spraying machine, controlling the number of spraying times to be 6 times, and the amount of each spraying is 11.5 grams per square foot;

[0051] (3) Ironing the leather sprayed with the finishing composition by a roller ironing machine, controlling the ironing temperature to 110° C., a pressure of 20 kg, and a speed of 21 m / min;

[0052] (4) Put the flat leather after ironing for 48 hours;

[0053] (5) After the leather after standing still is washed with ordinary water for 60 minutes, hang it to dry;

[0054] (6) Place the dried leather in a stainless steel drum for softening and soften for 6 hours to obtain washable leather.

[0055] De...

Embodiment 3

[0065] The third embodiment of the present invention provides a manufacturing process of washable leather, comprising the following steps:

[0066] (1) placing the prepared washable leather finishing composition in the raw material cavity of the spraying machine;

[0067] (2) Spraying the finishing composition on the leather surface by a spraying machine, controlling the number of spraying to be 4 times, and each spraying amount is 12 grams per square foot;

[0068] (3) Ironing the leather sprayed with the finishing composition by a roller ironing machine, controlling the ironing temperature to 105° C., a pressure of 18 kg, and a speed of 20 m / min;

[0069] (4) Put the flat leather after ironing for 40 hours;

[0070] (5) After the leather after standing still is washed with ordinary water for 40 minutes, hang it to dry;

[0071] (6) Place the dried leather in a stainless steel drum for softening and soften for 7 hours to obtain washable leather.

[0072] Detection:

[007...

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Abstract

Relating to the field of leather production and manufacturing, the invention provides a washable leather finishing composition and a leather manufacturing process. The washable leather finishing composition provided by the invention comprises a coloring agent, a film-forming agent, a wax emulsion, casein, a cross-linking agent and a polysiloxane aqueous emulsion. The innovation point of the washable leather finishing composition lies in that a lot of grease and wax are added into the finishing composition, and the grease and wax can be crosslinked with the crosslinking agent, thus being conducive to improving the strength and flexibility of a finishing film, therefore the leather produced according to the invention can be washable without affecting the handfeel and color. The finishing composition is sprayed to a leather surface by a spray machine, and by means of ironing, common washing, hanging drying, milling and other procedures, the manufactured leather is washable, has the advantages of wear resistance, wet rubbing resistance, sticking resistance and good glossiness, also has high strength and silk-like feel, and is comfortable to wear.

Description

technical field [0001] The invention relates to the field of leather production and manufacturing, in particular to a washable 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] Traditionally produced leather cannot be washed, and the coating layer of the leather after rain or water washing will be destroyed, which will easily cause the leather to fade or produce color difference, and the hand feel of the leather will become hard, which will affect the use effect; based on the above-mentioned prior art, the present invention A washable leather finishing composition and a manufacturing process for applying the finishing co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/65C08G18/65C08G18/36C08G18/62C08G18/32C08G18/64C14C11/00C14B1/54C14B1/58C14B1/40
CPCC09D175/14C09D7/65C08G18/6547C08G18/36C08G18/6204C08G18/3228C08G18/6415C14C11/00C14C11/003C14B1/54C14B1/58C14B1/40C08L2205/035C08L23/30C08L89/00C08L83/04
Inventor 赵自领洪新球张香花
Owner 海宁市芬尼司皮革科技服务有限公司
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