Tannin oil wax skin and preparation method thereof

A production method and tannin extract technology, applied in the directions of dyeing, leather dipping, leather surface treatment, etc., can solve the problems of poor washing resistance of tannin extract leather, no wax skin of extract tannin extract, poor softness of extract extract leather, etc. Shorter soaking time, good washability and abrasion resistance, soft hand feel

Active Publication Date: 2022-01-11
漳州香洲皮革有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, tannin leather still has the following deficiencies: the first: because of the poor permeability of tannins and weak binding force with leather collagen, the tannin leather has poor washability; second: the tannin leather has poor softness and poor hand feeling good
In addition, there is no related report about tannin extract wax skin

Method used

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  • Tannin oil wax skin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A preparation method of tannin extract wax skin, comprising the steps of:

[0053] The wet blue skin is rewetted→first retanning→alkali extraction→secondary retanning→prefatliquoring→dyeing→drying→softening→skinning→rolling, the details are as follows:

[0054] Step 1, rewetting: put the wetblue hide in the drum, add 200% water, 0.5% rehumidifying agent Usabang W, and 0.6% degreasing agent LIPIDOL DA according to the mass percentage of the wetblue hide , run for 48min, add 1.0% acid softening enzyme TJ-A488, 1.2% ammonium bisulfate, run for 90min, add 0.5% formic acid, run for 40min, add 1.2% anti-spot agent TJ-A971, run for 60min, add 0.78 % oxalic acid, run for 60 minutes, drain, add 300% water, wash with water and drain, and get wet leather;

[0055] Step 2, primary retanning: according to the mass percentage of wet blue leather, add 100% water and 0.5% formic acid into the drum, adjust the pH to 2.8-3.2, run for 40 minutes, and add 1.0% syntan agent SYNTAN TS150 , 4...

Embodiment 2

[0062] A preparation method of tannin extract wax skin, comprising the steps of:

[0063] The wet blue skin is rewetted→first retanning→alkali extraction→secondary retanning→prefatliquoring→dyeing→drying→softening→skinning→rolling, the details are as follows:

[0064] Step 1, rewetting: put the wetblue hide in the drum, add 150% water, 0.4% rehumidifying agent Usabang W, and 0.5% degreasing agent LIPIDOL DA according to the mass percentage of the wetblue hide , run for 45 minutes, add 0.9% acid softening enzyme TJ-A488, 1.1% ammonium bisulfate, run for 85 minutes, add 0.4% formic acid, run for 35 minutes, add 1.0% anti-spot agent TJ-A971, run for 55 minutes, add 0.7 % oxalic acid, run for 55 minutes, drain, add 250% water, wash with water and drain, and get wet leather;

[0065] Step 2, primary retanning: according to the mass percentage of wet blue leather, add 95% water and 0.4% formic acid into the drum, adjust the pH to 2.8-3.2, run for 35 minutes, and add 0.8% syntan tan...

Embodiment 3

[0072] A preparation method of tannin extract wax skin, comprising the steps of:

[0073] The wet blue skin is rewetted→first retanning→alkali extraction→secondary retanning→prefatliquoring→dyeing→drying→softening→skinning→rolling, the details are as follows:

[0074] Step 1, rewetting: put the wetblue hide in the drum, add 250% water, 0.6% rehumidifying agent Usabang W, and 0.7% degreasing agent LIPIDOL DA according to the mass percentage of the wetblue hide , run for 50 minutes, add 1.1% acid softening enzyme TJ-A488, 1.3% ammonium bisulfate, run for 95 minutes, add 0.6% formic acid, run for 45 minutes, add 1.3% anti-spot agent TJ-A971, run for 65 minutes, add 0.9 % oxalic acid, run for 65 minutes, drain, add 350% water, wash with water and drain to get wet leather;

[0075] Step 2, primary retanning: according to the mass percentage of wet blue leather, add 105% water and 0.6% formic acid into the drum, adjust the pH to 2.8-3.2, run for 45 minutes, add 1.2% syntan TS150 ,...

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Abstract

The invention discloses a method for preparing tannin oil wax skin, which belongs to the technical field of leather production. In the present invention, the finished leather is plump through the processes of rewetting → primary retanning → alkali removal → secondary retanning → prefatliquoring → dyeing → drying → softening → smoothing → rolling coating, etc. Stiff, soft to the touch, and has better washing resistance and abrasion resistance, and also has a strong discoloration effect.

Description

technical field [0001] The invention belongs to the technical field of leather production, and in particular relates to a tannin oil wax leather and a production method thereof. Background technique [0002] Tannin extract is widely used in the leather tanning process, because the leather produced has good fullness and good filling property, and can achieve less or zero chromium discharge, which has better environmental protection. [0003] However, tannin leather still has the following deficiencies: the first: because of the poor permeability of tannins and weak binding force with leather collagen, the tannin leather has poor washability; good. In addition, there is no related report about tannin extract wax skin. [0004] Therefore, the research on the preparation method of tannin oil wax skin is particularly important. Contents of the invention [0005] The object of the present invention is to solve the deficiencies of the prior art, and provide a tannin oil wax sk...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C3/28C14C1/00C14C9/02C14C11/00C14C3/12D06P1/44D06P1/651D06P3/32
CPCC14C3/28C14C1/00C14C9/02C14C11/00C14C3/12D06P3/32D06P1/445D06P1/65125
Inventor 雷丙南林汉彬陈启明杨俊昇
Owner 漳州香洲皮革有限公司
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