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A method for improving leather quality

A quality and leather technology, applied in the field of tanning chemistry and engineering, can solve the problems of unstretched texture and stiff hand feeling, achieve plump and sensual hand feeling, improve leather quality, and reduce production cost

Active Publication Date: 2021-08-03
XINGYE LEATHER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, in view of the above-mentioned problems, the present invention proposes a method for improving leather quality, by which the method for improving leather quality can not change the physical and mechanical properties of leather, but also effectively solve the surface roughness of semi-finished crust leather / finished leather. , Stretch texture, stiff hand feeling and other quality problems, and the method is simple and easy to implement, with low production cost, suitable for rework and remedy of mass products, improving leather quality, increasing leather yield and utilization rate, reducing returns and inventory backlogs, Improve the economic efficiency of the enterprise

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for improving leather quality, comprising the following steps in sequence:

[0022] (1), select the leather to be improved, and the leather to be improved is a semi-finished crust leather with unstretched texture and thick surface; weigh the leather to be improved, and determine the amount of reagent used in the subsequent process with the quality of the leather to be improved;

[0023] (2), put the leather to be improved into the water tank, add 2000% of water at 40°C, and soak for 30 minutes;

[0024] (3) After soaking, take out the leather to be improved and put it on the horse for 10 hours;

[0025] (4), dry finishing: the leather to be improved is squeezed and stretched in sequence → vacuum drying (time control is 36 ° C, time 120 seconds) → hanging drying (hanging time is 24 hours) → vibration softening (oscillation softening series It is grade 8) → soften at room temperature for 24 hours → finish, and improve the leather. The improved leather texture i...

Embodiment 2

[0027] A method for improving leather quality, comprising the following steps in sequence:

[0028] (1), select the leather to be improved, and the leather to be improved is a finished leather with a stiff handle; the leather to be improved is weighed, and the quality of the leather to be improved determines the amount of reagent used in the subsequent process;

[0029] (2), put the leather to be improved into the water tank, add 2000% of 48°C water, 2% fatliquor emulsion (the mixture of sulfated synthetic fatliquor and phospholipid, TRUPON DB of Toppler Company), soak 60min;

[0030] (3) After soaking, take out the leather to be improved and put it on the horse for 10 hours;

[0031] (4), dry finishing: the leather to be improved is squeezed and stretched in sequence → vacuum drying (time control is 36 ° C, time 150 seconds) → hanging drying (hanging time is 24 hours) → vibration softening (oscillation softening series It is grade 8) → softened at room temperature for 2 hou...

Embodiment 3

[0033] A method for improving leather quality, comprising the following steps in sequence:

[0034] (1), select the leather to be improved, and the leather to be improved is a thick leather with thick lines, shelling, and a dry and hard hand thickness greater than 1.4mm; the leather to be improved is weighed to determine the quality of the leather to be improved in the subsequent process the amount of reagent used;

[0035] (2), put the leather to be improved into the water tank, add 2000% of 45°C water, 0.5% surfactant (BORRON SAF of De Ruipi Chemical Co., Ltd.), 0.5% sulphated synthetic fatliquoring agent (soup TRUPON KAS of Puller Company) and 0.5% lecithin (PROVOL BA of Sima Chemical Company), soaked for 60min; subsequently, added 0.5% formic acid, soaked for 30min;

[0036] (3) After soaking, take out the leather to be improved and put it on the horse for 10 hours;

[0037] (4) Dry finishing: the leather to be improved is hung and dried in sequence (the hanging time is ...

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Abstract

The invention relates to the technical field of tanning chemistry and engineering, and provides a method for improving leather quality, which can effectively solve the problem of semi-finished crust / finished leather without changing the physical and mechanical properties of leather. The surface is thick, the lines are not stretched, the handle is stiff and other quality problems, and the method is simple and easy to implement, and the production cost is low. It is suitable for the rework of large-scale products, improving the quality of leather, increasing the yield and utilization of leather, and reducing returns and inventory. Backlog, improve enterprise economic benefit; Described method for improving leather quality, comprises following operation successively: select the semi-finished crust leather or finished leather that needs rework remedy as leather to be improved; Put leather to be improved into sink and soak with soaking liquid for 10- 300min; then take out the horse and let it stand for 3‑15h; finally carry out dry finishing to obtain improved leather.

Description

technical field [0001] The invention relates to the technical field of tanning chemistry and engineering, in particular to a method for improving leather quality used for rework remedy of semi-finished crust leather / finished leather. Background technique [0002] Semi-finished crust leather refers to the leather obtained from raw leather through the preparation process, tanning process, wet dyeing and finishing process, and drying and finishing process; The leather obtained in the workshop. [0003] In the production process of tanning, due to improper process or operation, the obtained leather will have problems such as rough surface, large grain, and stiff hand feeling, resulting in the quality of leather (semi-finished crust leather / finished leather) not meeting customer requirements , which will cause problems such as return and inventory backlog, which will affect the efficiency of the enterprise and cause huge economic losses to the enterprise. [0004] For this part...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C1/04C14B1/26C14B1/58C14B1/40C14C11/00
CPCC14B1/26C14B1/40C14B1/58C14C1/04C14C11/00
Inventor 曾文彪梁永贤冉崇元温会涛姚庆达孙辉永
Owner XINGYE LEATHER TECH CO LTD
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