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Method for chrome-free tanning beach woolfell by adopting chrome-free tanning agent

A chrome-free tanning agent and chrome-free tanning technology, applied in the treatment of small raw hide/big raw hide/leather/fur, chemical treatment and application of small raw hide/big raw hide/leather skin/fur, and can solve the problem of reducing curl, chrome Tanning cannot maintain naturalness, formaldehyde tanning has high content of free formaldehyde, etc., to achieve the effect of reducing treatment costs, leather body feels plump, and hair color is pure white

Inactive Publication Date: 2014-04-02
SHAANXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for chrome-free tanning of beach sheepskin with chrome-free tanning agent, which can solve the problems that conventional chrome tanning cannot maintain its naturalness, formaldehyde tanning has high free formaldehyde content, and improving whiteness will reduce curling.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Step 1, soaking in water: Soak the beach sheepskin in a 35°C soaking solution 20 times its mass for 12 hours;

[0047] Each liter of soaking liquid contains 0.5g fungicide ECOGRIN30LR (Tiger Leather Chemical), 18g salt (NaCl), 0.5g degreasing agent ACTOL DB (ATC Leather Chemical) and 0.1g soaking enzyme Feliderm SE3Powder (Clariant Chemical);

[0048] Step 2, removing the flesh from the beach sheepskin soaked in the soaking liquid;

[0049] Step three, degreasing:

[0050] Place the de-fleshed fur in a 35°C degreasing solution 20 times its mass, and paddle for 30 minutes;

[0051] Each liter of the degreasing solution contains 0.5g of soda ash, 0.1g of compound enzyme LTK-100 (Shenzhen Lvweikang Biological Engineering Co., Ltd.), 0.5g of penetrant JFC (Zibo Haijie Chemical Industry) and 2g of degreasing agent PX (Sheng Hui Chemical Industry);

[0052] Step four, soften:

[0053]Add alkaline softening enzyme JB-Ⅱ (Xuzhou Tianli Enzyme Preparation Co., Ltd.) to the de...

Embodiment 2

[0084] Step 1, soaking in water: Soak the beach sheepskin in a 30°C soaking solution 25 times its mass for 24 hours;

[0085] Each liter of soaking liquid contains 1.0g of fungicide ECOGRIN30LR (Tiger Leather Chemical), 10g of salt (NaCl), 1.5g of degreasing agent ACTOL DB (ATC Leather Chemical) and 0.8g of soaking enzyme FelidermSE3Powder (Clariant Chemical);

[0086] Step 2, removing the flesh from the beach sheepskin soaked in the soaking liquid;

[0087] Step three, degreasing:

[0088] Place the de-fleshed fur in a 38°C degreasing solution that is 30 times its mass, and paddle for 80 minutes;

[0089] Each liter of degreasing solution contains 1.0g of soda ash, 1.5g of compound enzyme LTK-100 (Shenzhen Lvweikang Biological Engineering Co., Ltd.), 1.0g of penetrant JFC (Zibo Haijie Chemical Industry) and 3g of degreasing agent PX (Sheng Hui Chemical Industry);

[0090] Step four, soften:

[0091] Add alkaline softening enzyme JB-Ⅱ (Xuzhou Tianli Enzyme Preparation Co.,...

Embodiment 3

[0122] Step 1, soaking in water: Soak the beach sheepskin in a 32°C soaking solution that is 30 times its mass for 18 hours;

[0123] Each liter of soaking liquid contains 1.5g of fungicide ECOGRIN30LR (Tiger Leather Chemical), 25g of salt (NaCl), 2.5g of degreasing agent ACTOL DB (ATC Leather Chemical) and 1.5g of soaking enzyme FelidermSE3Powder (Clariant Chemical);

[0124] Step 2, removing the flesh from the beach sheepskin soaked in the soaking liquid;

[0125] Step three, degreasing:

[0126] Place the de-fleshed fur in a degreasing solution at 40°C that is 40 times its mass, and paddle for 120 minutes;

[0127] Each liter of degreasing solution contains 1.5g of soda ash, 0.8g of complex enzyme LTK-100 (Shenzhen Lvweikang Biological Engineering Co., Ltd.), 1.5g of penetrant JFC (Zibo Haijie Chemical Industry) and 5g of degreasing agent PX (Sheng Hui Chemical Industry);

[0128] Step four, soften:

[0129] Add alkaline softening enzyme JB-Ⅱ (Xuzhou Tianli Enzyme Prepa...

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Abstract

The invention discloses a processing method for chrome-free tanning a beach woolfell by adopting a chrome-free tanning agent DESOTAN H30, which comprises the following steps: soaking, fleshing, degreasing, softening, pickling, tanning, extracting alkali, wet grinding, re-tanning, drying, wetting back, dry cleaning, staking, conditioning, reducing, oxidizing, drying, wetting back, staking, dry grinding, dedusting, and obtaining the finished product. The method is the technology for preparing the beach white woolfell, adopts the chrome-free tanning agent to process the beach white woolfell, uses no chrome during the tanning process, and obtains the finished product, which is pure white, slightly curled and distinctive in style, keeps the natural property, contains less than 150ppm of free formaldehyde, has a shrinkage temperature higher than 75 DEG C and has practical production significances. The technology can not only realize zero emission of waste chrome and lower the sewage treatment cost for an enterprise, but also obtain the finished product which is pure white, slightly curled and artistic in appearance, feels plump and soft, contains 130mg / kg of formaldehyde and has a shrinkage temperature of 75 DEG C.

Description

technical field [0001] The invention relates to a fur processing technology, in particular to a chrome-free tanning method for beach wool fur with a chrome-free tanning agent. Background technique [0002] Since the chrome tanning method was invented more than a hundred years ago, the excellent performance of the tanned leather is almost unshakable, and it is still the mainstream technology of fur tanning. Chrome tanning and chrome retanning are processes that will produce chromium pollution in the fur processing process. In the actual production process, the utilization rate of chromium is about 30%, and the remaining 70% of the chrome tanning agent enters the wastewater. Chromium wastewater is a major contributor to pollution in the fur industry and is usually treated separately, Gr 2 o 3 The content of chromium is as high as 1-5g / L. If it is discharged directly, it will cause great pollution to the ecological environment, endanger human health, and cause serious waste o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C3/02C14C3/04C14C3/08C14C3/28C14C1/04C14C1/08
Inventor 王学川王自荣李飞虎马旭强涛涛王金云
Owner SHAANXI UNIV OF SCI & TECH
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