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Production process of low-odor low-VOC (volatile organic compound) cowhide sofa leather

A production process and low-odor technology, applied in leather impregnation, leather surface treatment, special leather manufacturing, etc., can solve the problems of high VOC content, heavy odor, etc., achieve the effect of reducing residue, easy process control, and ensuring ecological and environmental protection characteristics

Pending Publication Date: 2022-07-12
浙江通天星集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the invention patent with the patent number 201210197818.8 has enhanced the control of harmful substances and organic emission substances, but there are still defects such as heavy odor and high VOC content.

Method used

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  • Production process of low-odor low-VOC (volatile organic compound) cowhide sofa leather
  • Production process of low-odor low-VOC (volatile organic compound) cowhide sofa leather
  • Production process of low-odor low-VOC (volatile organic compound) cowhide sofa leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A production process of low odor and low VOC cowhide sofa leather, the steps of which include:

[0031] a) Water immersion: the raw skin is immersed in water by mixing oil microorganisms and enzymes;

[0032] b) Degreasing: Calculated by taking the raw material skin weight as 100 parts, adding 1 part of lipase DOWELLZYM HK, 800.5 parts of degreasing agent Supralan, at a temperature of 30-35 ° C, rotating for 30 minutes, and then softening;

[0033] c) tanning: use zeolite tanning agent with zeolite as the main ingredient to tan the leather after the degreasing treatment in step b) to obtain wet white leather; carry out in pickling solution, add zeolite tanning agent ZLR-1004 parts, rotate for 4h , add 1.2 parts of baking soda (add in 3 times), pH=4.0-4.2; add 0.5 part of antifungal agent 30L, rotate for 60 minutes;

[0034] d) retanning: adopt sulfone bridge type synthetic tanning agent to carry out retanning, and the sulfone bridge type synthetic tanning agent and the...

Embodiment 2

[0048] The same as Example 1, the difference is that the raw hide has a large difference in position, thick fibers, and a large amount of fat in the raw hide, so it needs to be strengthened in the water immersion and degreasing processes.

[0049] In the soaking process, the first dosage of the soaking agent Proviera was replaced with 2 parts, and the second dosage was replaced with 2 parts.

[0050] In the degreasing step, the amount of degreasing agent Supralan 80 was replaced by 1.0 part, and the rotation time was replaced by 50 minutes.

Embodiment 3

[0052] It is the same as Example 1, except that the amount of degreasing agent Supralan 80 in Example 1 is replaced by 1.0 part, and the rotation time is replaced by 50 minutes.

[0053] During the finishing operation, the primer spray amount was replaced with 30g / m2 2 , the water-based pigment paste used in the middle coating is replaced by 40 parts, and the spraying amount is replaced by 25g / m 2 .

[0054] The main quality index detection result of the leather produced by Example 1, Example 2 and Example 3

[0055] Table 1 The main quality index detection result of leather produced by the process of the present invention

[0056]

[0057] The main quality index test results of the leather produced by the process of the present invention (Example 1, Example 2, and Example 3) are listed in Table 1. Comparing with the content of the current national standard GB / T 16799-2018, it can be seen that the measured indexes all meet the requirements of the current standard, which ...

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Abstract

The invention relates to the field of industrial leather manufacturing, and discloses a production process of low-odor low-VOC (volatile organic compound) cowhide sofa leather, which comprises the following steps: soaking: soaking raw material leather in water based on microorganisms and protease; degreasing is conducted; tanning: tanning by adopting a material taking zeolite as a main component; retanning: retanning by adopting a sulfone bridge type synthetic tanning agent; fat liquoring; fixing: cationic polyurethane is adopted as a fixing agent; performing drying; and coating. Compared with an existing low-VOC cow leather processing technology, the method has the advantages that a series of low-odor and low-VOC chemicals are preferably selected for processing raw leather and leather blanks, and the residual amount of VOC and odor in leather is effectively controlled from the source; the odor and VOC content in the product are controlled based on optimization of chemical materials, existing equipment and facilities can be completely adopted for large-scale production, the process is easy to control, and practicability is high.

Description

technical field [0001] The invention relates to the field of industrial leather manufacturing, in particular to a production process of low-odor and low-VOC cowhide sofa leather. Background technique [0002] Odor and VOC are the quality indicators of sofa leather that are most concerned by domestic and foreign markets at present. VOC is the English abbreviation of Volatile Organic Compounds. Odor is the reaction of people's sense of smell to specific VOC substances. There is a certain connection between the two, but there are certain differences. They are usually listed as two types of leather products. item quality indicators. Odors and VOCs have obvious interference and harm to human health, especially indoor odors and VOCs, which have received widespread attention from the society. Leather is the preferred fabric for high-end sofas, and eco-leather with low odor and low VOC has become a regular requirement for brand sofa manufacturers. The current national standard GB...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C13/02C14C1/04C14C1/08C14C3/04C14C3/28C14C9/02C14C11/00
CPCC14C13/02C14C1/04C14C1/08C14C3/04C14C3/28C14C11/006C14C9/02C14C11/00
Inventor 徐祥进高德良兰莉洪文卿叶永彬王强夏刚姚忠李荣
Owner 浙江通天星集团股份有限公司
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