CN104212921B - Thin assorted skin chrome retanned method - Google Patents
Thin assorted skin chrome retanned method Download PDFInfo
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- CN104212921B CN104212921B CN201410479162.8A CN201410479162A CN104212921B CN 104212921 B CN104212921 B CN 104212921B CN 201410479162 A CN201410479162 A CN 201410479162A CN 104212921 B CN104212921 B CN 104212921B
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- kilogram
- chrome retanned
- dried bark
- nacl
- rotary drum
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Abstract
The present invention relates to leather tanning field, especially a kind of thin assorted skin chrome retanned method, the retanning equipment of use is rotary drum；In rotary drum, first add water, chromium powder, Nacl, wetting agent, chrome retanned auxiliary agent, temperature controls at 35-38 DEG C, then chromium powder, Nacl, wetting agent are stirred in water, add dried bark, continuously stirred 2-3 hour, then heat to 43-46 DEG C, then 5-10 minute per hour ground intermittence stirs 8-12 hour, skin can be gone out, dry；This thin assorted chrome retanned method, adopts rotary drum to carry out the chrome retanned of thin assorted skin by the method, decreases the adjustment operation such as pH value, scouring of wool, has saved more water consumption, reduces energy consumption, saves chemical materials, reduce process time, shortens the process-cycle.
Description
Technical field
The present invention relates to leather tanning field, especially a kind of thin assorted skin chrome retanned method.
Background technology
Fur industry overall technology low SI, the thin assorted skin (more than 95%) of the overwhelming majority is required for through chrome retanned, so the chrome retanned operation output value is big.But in traditional chrome retanned process, the paddle-tumble of employing is as instrument, and the amount of the chemical articles such as the chromium powder used, Nacl, wetting agent is big, also huge with hourly water consumption, and operation is relatively complicated, and energy resource consumption is big.
Existing thin assorted skin is after dried bark adds after paddling 8-12 hour, it is necessary to is adjusted pH value, it is ensured that pH value is about 4, then is warming up to 38 DEG C, continues paddling 6-8 hour, finally go out skin, dry after also need to carry out changing hand washed wool process；Operation relative complex, consumes substantial amounts of water simultaneously, and process time is extremely long, extremely inefficient simultaneously.
Summary of the invention
The invention aims to solve the deficiency of above-mentioned technology and a kind of thin assorted skin chrome retanned method that working (machining) efficiency is high, energy consumption is low, operation is few is provided.
In order to achieve the above object, the thin assorted skin chrome retanned method designed by the present invention, the retanning equipment of use is rotary drum；In rotary drum, first add water, chromium powder, Nacl, wetting agent, chrome retanned auxiliary agent, temperature controls at 35-38 DEG C, then chromium powder, Nacl, wetting agent are stirred in water, add dried bark, continuously stirred 2-3 hour, then heat to 43-46 DEG C, then 5-10 minute per hour ground intermittence stirs 8-12 hour, skin can be gone out, dry；Wherein: the water yield that 1 kilogram of dried bark uses is 3-7 kilogram, the chromium powder amount that 1 kilogram of dried bark uses is 0.09-0.21 kilogram, the Nacl amount that 1 kilogram of dried bark uses is 0.09-0.21 kilogram, the wetting agent that 1 kilogram of dried bark uses is 3-7 milliliter, and the chrome retanned amount of auxiliary that 1 kilogram of dried bark uses is 40 milliliters.
The rotary drum used in technique scheme is the patent No.: 2014201342209, and patent name is: the all-in-one in energy-efficient low emission fur polychromatic dyeing all-in-one.
The thin assorted chrome retanned method that the present invention is obtained, adopts rotary drum to carry out the chrome retanned of thin assorted skin by the method, decreases the adjustment operation such as pH value, scouring of wool, save more water consumption, reduce energy consumption, save chemical materials, reduce process time, shorten the process-cycle；Temperature is maintained at 43-46 DEG C simultaneously, and chromium ion can be promoted better to penetrate into inside hide fiber, more firm with hide fiber protein binding；The method can reduce and puies forward alkali process, it is to avoid carries and occurs in alkali process that chromium ion precipitates the situation being attached on fur, makes retanning process safety and stability more.
Detailed description of the invention
The present invention is further described by the following embodiment.
Embodiment 1:
The thin assorted skin chrome retanned method that the present embodiment describes, the retanning equipment of use is rotary drum；In rotary drum, first add water, chromium powder, Nacl, wetting agent, chrome retanned auxiliary agent, temperature controls at 35 DEG C, then chromium powder, Nacl, wetting agent are stirred in water, add dried bark, continuously stirred 2 hours, then heat to 43 DEG C, then 5 minutes per hour ground intermittences stir 8 hours, skin can be gone out, dry；Wherein: the water yield that 1 kilogram of dried bark uses is 3 kilograms, the chromium powder amount that 1 kilogram of dried bark uses is 0.09 kilogram, the Nacl amount that 1 kilogram of dried bark uses is 0.09 kilogram, and the wetting agent that 1 kilogram of dried bark uses is 3 milliliters, and the chrome retanned amount of auxiliary that 1 kilogram of dried bark uses is 40 milliliters.
Embodiment 2:
The thin assorted skin chrome retanned method that the present embodiment describes, the retanning equipment of use is rotary drum；In rotary drum, first add water, chromium powder, Nacl, wetting agent, chrome retanned auxiliary agent, temperature controls at 38 DEG C, then chromium powder, Nacl, wetting agent are stirred in water, add dried bark, continuously stirred 3 hours, then heat to 46 DEG C, then 10 minutes per hour ground intermittences stir 12 hours, skin can be gone out, dry；Wherein: the water yield that 1 kilogram of dried bark uses is 7 kilograms, the chromium powder amount that 1 kilogram of dried bark uses is 0.21 kilogram, the Nacl amount that 1 kilogram of dried bark uses is 0.21 kilogram, and the wetting agent that 1 kilogram of dried bark uses is 7 milliliters, and the chrome retanned amount of auxiliary that 1 kilogram of dried bark uses is 50 milliliters.
Embodiment 3:
The thin assorted skin chrome retanned method that the present embodiment describes, the retanning equipment of use is rotary drum；In rotary drum, first add water, chromium powder, Nacl, wetting agent, chrome retanned auxiliary agent, temperature controls at 36 DEG C, then chromium powder, Nacl, wetting agent are stirred in water, add dried bark, continuously stirred 2.5 hours, then heat to 45 DEG C, then 8 minutes per hour ground intermittences stir 10 hours, skin can be gone out, dry；Wherein: the water yield that 1 kilogram of dried bark uses is 5 kilograms, the chromium powder amount that 1 kilogram of dried bark uses is 0.15 kilogram, the Nacl amount that 1 kilogram of dried bark uses is 0.16 kilogram, and the wetting agent that 1 kilogram of dried bark uses is 5 milliliters, and the chrome retanned amount of auxiliary that 1 kilogram of dried bark uses is 45 milliliters.
Two kinds of technology consume contrast table
Claims (1)
1. a thin assorted skin chrome retanned method, is characterized in that: the retanning equipment of use is rotary drum；In rotary drum, first add water, chromium powder, Nacl, wetting agent, chrome retanned auxiliary agent, temperature controls at 35-38 DEG C, then chromium powder, Nacl, wetting agent are stirred in water, add dried bark, continuously stirred 2-3 hour, then heat to 43-46 DEG C, then 5-10 minute per hour ground intermittence stirs 8-12 hour, skin can be gone out, dry；Wherein: the water yield that 1 kilogram of dried bark uses is 3-7 kilogram, the chromium powder amount that 1 kilogram of dried bark uses is 0.09-0.21 kilogram, the Nacl amount that 1 kilogram of dried bark uses is 0.09-0.21 kilogram, the wetting agent that 1 kilogram of dried bark uses is 3-7 milliliter, and the chrome retanned amount of auxiliary that 1 kilogram of dried bark uses is 40-50 milliliter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410479162.8A CN104212921B (en) | 2014-09-19 | 2014-09-19 | Thin assorted skin chrome retanned method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410479162.8A CN104212921B (en) | 2014-09-19 | 2014-09-19 | Thin assorted skin chrome retanned method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104212921A CN104212921A (en) | 2014-12-17 |
| CN104212921B true CN104212921B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410479162.8A Expired - Fee Related CN104212921B (en) | 2014-09-19 | 2014-09-19 | Thin assorted skin chrome retanned method |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831512B (en) * | 2009-03-13 | 2013-09-18 | 上海喜若飞精细化工有限公司 | Retaining agent with compound function and preparation method thereof |
| CN102586509A (en) * | 2011-12-31 | 2012-07-18 | 河北东明皮革有限公司 | Tanning method of sheep skins |
| CN103103296B (en) * | 2012-11-09 | 2015-10-07 | 际华三五一五皮革皮鞋有限公司 | The method of tear strength of leather is improved without deashing and softening |
| CN103088168A (en) * | 2013-01-25 | 2013-05-08 | 陕西科技大学 | Process for circularly tanning cowhide sofa leather by using waste liquor for pickling without bath salt |
| CN103290151B (en) * | 2013-06-19 | 2015-05-13 | 海宁瑞星皮革有限公司 | Method for preparing leather by using chromium-free retanning agent |
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- 2014-09-19 CN CN201410479162.8A patent/CN104212921B/en not_active Expired - Fee Related
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| CN104212921A (en) | 2014-12-17 |
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