Processing method of improved low VOC volatilized cowhide sofa leather
A processing method and technology for sofa leather, which can be used in leather drying, leather manufacturing, special leather manufacturing, etc., and can solve the problems of heavy product odor, high total carbon emission, and non-compliance with environmental protection requirements.
Inactive Publication Date: 2020-01-10
海宁永欣科技咨询有限公司
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Problems solved by technology
The following problems generally exist in the existing cowhide sofa leather: the total carbon emission (total organic volatile matter) is too high, which does not meet the environmental protection requirements
[0003] Existing leather processing methods need to use a large amount of additives, will produce a large amount of volatile organic compounds, and the product has a heavy odor. Therefore, it is necessary to design an improved processing method for cowhide sofa leather with low VOC volatilization
Method used
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[0069] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0070] The processing method of the volatilized cowhide sofa leather of this improved type low VOC comprises the following steps:
[0071] a, depilation: the rawhide is depilated one by one by a hair pushing machine; in the present embodiment, the hair pushing machine adopts existing equipment available on the market;
[0072] b, softening: the raw hide after depilation is softened under the action of softening enzyme, the amount of softening enzyme is 1-2% of the weight of raw hide, the softening temperature is 28-34 ° C, and the softening time is 20-30min; in this embodiment , softening the rawhide after depilation under the action of softening enzyme, the amount of softening enzyme is 1.5% of the weight of the hide, the...
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Abstract
The invention provides a processing method of improved low VOC volatilized cowhide sofa leather, and solves the technical problems that the existing leather processing method needs to use a large amount of auxiliary agents, generates a large amount of volatile organic compounds, has heavy product odor and the like. The processing method of the low VOC volatilized cowhide sofa leather comprises thefollowing steps: A, unhairing; b. softening; c. tanning; d. retanning; E. rinsing; f. dyeing; G. fatliquoring; H. squeezing water; I, vacuum drying; J. hanging naturally to dry; K, performing moisture regain, softening and finishing. The improved low VOC volatilized cowhide sofa leather has the advantage of good environmental friendliness.
Description
technical field [0001] The invention relates to a processing method of an improved low-VOC volatilization cowhide sofa leather. Background technique [0002] VOC is the English abbreviation of volatile organic compounds (volatile organic compounds). VOC in the general sense is command volatile organic compounds; but the definition in the sense of environmental protection refers to a type of active volatile organic compounds, that is, the type of volatile organic compounds that will cause harm. The existing cowhide sofa leather generally has the following problems: the total carbon emission (total organic volatile matter) is relatively high, which does not meet the environmental protection requirements. [0003] Existing leather processing methods need to use a large amount of auxiliary agents, which will produce a large amount of volatile organic compounds, and the product has a heavy odor. Therefore, it is necessary to design an improved processing method for cowhide sofa ...
Claims
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IPC IPC(8): C14C15/00C14C13/00C14B1/58C14B1/02C14B17/00C14B17/14
CPCC14B1/02C14B1/58C14B17/00C14B17/14C14C13/00C14C15/00
Inventor 不公告发明人
Owner 海宁永欣科技咨询有限公司