CN101724719B - Method for tanning non-metal tanned goat leather for making garment - Google Patents
Method for tanning non-metal tanned goat leather for making garment Download PDFInfo
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- CN101724719B CN101724719B CN 200910023917 CN200910023917A CN101724719B CN 101724719 B CN101724719 B CN 101724719B CN 200910023917 CN200910023917 CN 200910023917 CN 200910023917 A CN200910023917 A CN 200910023917A CN 101724719 B CN101724719 B CN 101724719B
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Abstract
The invention discloses a method for tanning non-metal tanned goat leather for making garment. The method adopts a combination of two non-metal tanning agents of a plant tanning agent and an organic phosphine for tanning, and simultaneously, adds a certain amount of terminal amino-dendrimers in the post period of stuffing lipid so as to greatly reduce the content of free formaldehyde in leather, wherein Ts (shrinkage temperature) is greater than or equal to 90 DEG C; and the removal rate of formaldehyde can reach up to 70 percent. The leather has good ageing resistant performance and ventilation property; and all of the other physical and mechanical performance such as tensile strength, tearing strength and the like can reach the standards of chrome tanned leather in the same type.
Description
Technical field
The invention belongs to the leather tanning field, particularly a kind of process for tanning of non-metal tanned goat leather for making garment.
Background technology
Though chrome tanned leather has good shrinkage temperature, good physicals studies show that the Cr in the chrome tanned leather recently
3+Be oxidized to the Cr with carinogenicity under the conditions such as easy light in the external world, heat, sweat
6+, it is more and more higher to cause country such as European Union that the leatherware of China's outlet is required, and cleans that to produce be the only way which must be passed of leather industry Sustainable development, though the research of no chrome tanning technology is many, is difficult in factory's popularization realization industrialization.
The subject matter that present chrome-free tanning agent faces is formaldehyde content severe overweight in the finished product leather.Because the binding site of no chrome tanned leather and collegen filament is fewer, so follow-up stuffing operation is influenced very big, and market specially at the fatting agent of no chrome tanning again seldom, so it is bigger not have the stuffing operation difficulty of chrome tanning.The physicals of some no chrome tanned leather is poor simultaneously, shows that mainly the dyeing of leather base is inhomogeneous, and tensile strength does not reach requirement.
Summary of the invention
The present invention provides a kind of process for tanning of non-metal tanned goat leather for making garment, adopt two kinds of no metal tanning agents of vegetable tanning agent and organic phosphine to be combined tanning, add the amino branch-shape polymer of a certain amount of end in the stuffing later stage simultaneously, reduce the content of free formaldehyde in the leather significantly, Ts (shrinkage temperature) 〉=90 ℃, the formaldehyde clearance can be up to 70%, have good ageing-resistant performance, permeability, other physical and mechanical propertiess such as tensile strength, tear strength all can reach similar chrome tanned leather standard.
The process for tanning of no metal tanning clothing leather:
(1) return wet
Get the normal-temperature water of 6%～8% salt and 80%～100% in rotary drum, changeed 10～15 minutes, put into sour skin after waiting salt to dissolve fully, 1%～1.5% sodium bicarbonate with the dilution of 10 times water after, add at twice in the rotary drum, regulating pH is 5.5～6.0, and continuing changeed 20～30 minutes;
(2) pretan
The first step is gone back to the wet back of finishing and is added 4%～6% vegetable tanning agent, rotated at normal temperatures 3～5 hours, after be warming up to 30～40 ℃, be rotated further 3～5 hours, add 0.5%～1% formic acid and regulate pH to 4.0, stop rousing, spend the night;
(3) degreasing
The second step operation is finished 30～40 ℃ of water that the back adds 1%～1.5% grease-removing agent and 100%～150% in rotary drum, changes 30～40 minutes, change liquid after, washed discharge opeing 10～15 minutes with 30～40 ℃ of water of 200%～300%;
(4) stuffing
40～55 ℃ of water of adding 100%～150% in the rotary drum after the 3rd step, operation was finished, add in the rotary drum with 40～55 ℃ of water 10%～20% fatting agent being melted with boiling water, change after 5～10 minutes, guarantee that temperature reaches 40～55 ℃ in the drum, changeed 1～1.5 hour, add formic acid and fix, regulate pH to 4.0, discharge opeing;
(5) replenish tanning
Add the normal-temperature water of 2%～4% organic phosphine tanning agent and 80%～100% after the stuffing again in rotary drum, rotated 2～3 hours, the sodium-acetate of adding 1%, rotated 20～30 minutes, and then 1.5%～2% sodium bicarbonate was opened with 5 times aquation, divide in 3 adding rotary drums, regulate about pH to 5.5, be rotated further 30～120min, the normal-temperature water washing with 300% 10～15 minutes, discharge opeing;
(6) oxidation
Replenish and to add 100%～150% normal-temperature water after the tanning, 0.5% hydrogen peroxide rotates 30～40min, and the normal-temperature water with 300% was washed 10～15 minutes, discharge opeing;
(7) except formaldehyde
Add 100%～150% normal-temperature water after the oxidation, add the amino branch-shape polymer of 1%～3% end, changeed discharge opeing 60～120 minutes;
(8) replenish stuffing
Except behind the formaldehyde, add 40～55 ℃ of water of 100%～150% in the rotary drum, with 40～55 ℃ of water 8%～10% fatting agent is being melted with boiling water in the adding rotary drum, change after 10～15 minutes, guarantee that temperature reaches 40～55 ℃ in the drum, changeed 1～1.5 hour, add formic acid and fix, regulate pH to 4.0.
(9) drying and finishing process get final product according to a conventional method.
Plant alkane tanning agent is Baise of Guangxi woodsization head factory;
The organic phosphine tanning agent is that Switzerland Clariant company produces;
Hold amino branch-shape polymer self-control;
Fatting agent is the light formed material of Chengyang Feng Rui company limited.
Tanning of the present invention and finished leather shrinkage temperature 〉=90 put in order after super-dry ℃ have good unit elongation, tensile strength and tear strength, and leather collagen fiber is uniformly dispersed, and near chrome-tanned state, is fit to pigskin, sheepskin, ox-hide tanning are become clothing leather.
It is as follows that the present invention has advantage:
1. the present invention can replace traditional chromic salts tanning, has reduced the pollution of chromic salts, avoids the use to the metal tanning agent, alleviates leather industry to environmental stress.
2. the clothing leather produced of the present invention, its mechanical and physical performance is good, compares similar chrome tanned leather and has good tensile strength, tear strength and collapse brokenly intensity, and ageing-resistant performance is better than chrome tanned leather.
3. the present invention produces the better clothing leather of physicals by the synergistic effect that two kinds of no metal tanning agents produce.
4. the present invention utilizes the amino branch-shape polymer of end to play to remove formaldehyde and filling effect.
Embodiment
Present invention is described below by specific embodiment:
Embodiment 1
(1) return wet
Get 6% salt and be dissolved in 80% the normal-temperature water, changeed 10 minutes, wait salt to dissolve the back fully and add sour skin.1% sodium bicarbonate with the dilution of 10 times water after, add at twice in the rotary drum, regulating pH is 5.5～6.0, continuing changeed 20 minutes.
(2) pretan
The first step is returned and is added 4% vegetable tanning agent in the wet liquid, rotated 3 hours, after be warming up to 35 ℃, be rotated further 3 hours.The formic acid of adding 0.5% is regulated pH to 4.0, stops drum, spends the night discharge opeing.
(3) degreasing
The second step operation finish add 1% grease-removing agent and 100% in the rotary drum of back 35 ℃ of water in rotary drum, changeed 40 minutes, change liquid after, washed discharge opeing 10 minutes with 35 ℃ of water of 300%;
(4) stuffing
The 3rd step operation is finished and is added 45 ℃ of water of 130% in the rotary drum of back, adds in the rotary drum with 45 ℃ of water 12% fatting agent being melted with boiling water, changes after 10 minutes, guarantees to rouse interior temperature and reaches 45 ℃, changes 1.5 hours, and adding formic acid is fixed, adjusting pH to 4.0, discharge opeing;
(5) replenish tanning
Add the normal-temperature water of 4% organic phosphine tanning agent and 100% after the stuffing again in rotary drum, rotated 2 hours, the sodium-acetate of adding 1%, rotated 30 minutes, and then 2% sodium bicarbonate was opened with 5 times aquation, divide in 3 adding rotary drums, regulate about pH to 5.5, be rotated further 120min, the normal-temperature water washing with 200% 15 minutes, discharge opeing;
(6) oxidation
The normal-temperature water of adding 100% after the additional tanning, 0.5% hydrogen peroxide rotates 40min, the normal-temperature water washing with 300% 10 minutes, discharge opeing;
(7) except formaldehyde
Add 150% normal-temperature water after the oxidation, add the amino branch-shape polymer of 1.5% end, changeed discharge opeing 100 minutes;
(8) replenish stuffing
Except behind the formaldehyde, add 45 ℃ of water of 100% in the rotary drum, add in the rotary drum with 45 ℃ of water 8% fatting agent being melted with boiling water, changes after 10 minutes, guarantee that the interior temperature of drum reaches 45 ℃, changeed 1.5 hours, adding formic acid is fixed, adjusting pH to 4.0.
(9) drying and finishing process carry out according to a conventional method.
Embodiment 2
(1) return wet
Get 7% salt and be dissolved in 80% the normal-temperature water, changeed 10 minutes, wait salt to dissolve the back fully and add sour skin.1% sodium bicarbonate with the dilution of 10 times water after, add at twice in the rotary drum, regulating pH is 5.5～6.0, continuing changeed 25 minutes.
(2) pretan
The first step is returned and is added 5% vegetable tanning agent in the wet liquid, rotated 3 hours, after be warming up to 35 ℃, be rotated further 3 hours.The formic acid of adding 0.5% is regulated pH to 4.0, stops drum, spends the night discharge opeing.
(3) degreasing
The second step operation finish add 1% grease-removing agent and 100% in the rotary drum of back 30 ℃ of water in rotary drum, changeed 30 minutes, change liquid after, washed discharge opeing 15 minutes with 35 ℃ of water of 200%;
(4) stuffing
The 3rd step operation is finished and is added 45 ℃ of water of 100% in the rotary drum of back, adds in the rotary drum with 45 ℃ of water 8% fatting agent being melted with boiling water, changes after 6 minutes, guarantees to rouse interior temperature and reaches 45 ℃, changes 1 hour, and adding formic acid is fixed, adjusting pH to 4.0, discharge opeing;
(5) replenish tanning
Add the normal-temperature water of 4% organic phosphine tanning agent and 100% after the stuffing again in rotary drum, rotated 3 hours, the sodium-acetate of adding 1%, rotated 30 minutes, and then 2% sodium bicarbonate was opened with 5 times aquation, divide in 3 adding rotary drums, regulate about pH to 5.5, be rotated further 120min, the normal-temperature water washing with 200% 15 minutes, discharge opeing;
(6) oxidation
The normal-temperature water of adding 150% after the additional tanning, 0.5% hydrogen peroxide rotates 40min, the normal-temperature water washing with 200% 10 minutes, discharge opeing;
(7) except formaldehyde
Add 100% normal-temperature water after the oxidation, add the amino branch-shape polymer of 1% end, changeed discharge opeing 120 minutes;
(8) replenish stuffing
Except behind the formaldehyde, add 45 ℃ of water of 150% in the rotary drum, add in the rotary drum with 45 ℃ of water 10% fatting agent being melted with boiling water, changes after 10 minutes, guarantee that the interior temperature of drum reaches 45 ℃, changeed 1.5 hours, adding formic acid is fixed, adjusting pH to 4.0.
(9) drying and finishing process carry out according to a conventional method.
Embodiment 3
(1) return wet
Get 8% salt and be dissolved in 100% the normal-temperature water, changeed 15 minutes, wait salt to dissolve the back fully and add sour skin.1.5% sodium bicarbonate with the dilution of 10 times water after, add at twice in the rotary drum, regulating pH is 5.5～6.0, continuing changeed 30 minutes.
(2) pretan
The first step is returned and is added 6% vegetable tanning agent in the wet liquid, rotated 5 hours, after be warming up to 35 ℃, be rotated further 5 hours.The formic acid of adding 1% is regulated pH to 4.0, stops drum, spends the night discharge opeing.
(3) degreasing
The second step operation finish add 1.5% grease-removing agent and 150% in the rotary drum of back 30 ℃ of water in rotary drum, changeed 40 minutes, change liquid after, washed discharge opeing 10 minutes with 35 ℃ of water of 300%;
(4) stuffing
The 3rd step operation is finished and is added 55 ℃ of water of 150% in the rotary drum of back, adds in the rotary drum with 55 ℃ of water 10% fatting agent being melted with boiling water, changes after 10 minutes, guarantees to rouse interior temperature and reaches 55 ℃, changes 1.5 hours, and adding formic acid is fixed, adjusting pH to 4.0, discharge opeing;
(5) replenish tanning
Add the normal-temperature water of 3% organic phosphine tanning agent and 90% after the stuffing again in rotary drum, rotated 2 hours, the sodium-acetate of adding 1%, rotated 20 minutes, and then 1.5% sodium bicarbonate was opened with 5 times aquation, divide in 3 adding rotary drums, regulate about pH to 5.5, be rotated further 90min, the normal-temperature water washing with 300% 10 minutes, discharge opeing;
(6) oxidation
The normal-temperature water of adding 100% after the additional tanning, 0.5% hydrogen peroxide rotates 30min, the normal-temperature water washing with 300% 15 minutes, discharge opeing;
(7) except formaldehyde
Add 150% normal-temperature water after the oxidation, add the amino branch-shape polymer of 1.5% end, changeed discharge opeing 80 minutes;
(8) replenish stuffing
Except behind the formaldehyde, add 45 ℃ of water of 100% in the rotary drum, add in the rotary drum with 45 ℃ of water 8% fatting agent being melted with boiling water, changes after 10 minutes, guarantee that the interior temperature of drum reaches 45 ℃, changeed 1 hour, adding formic acid is fixed, adjusting pH to 4.0.
(9) drying and finishing process carry out according to a conventional method.
Claims (3)
1. the process for tanning of a non-metal tanned goat leather for making garment is characterized in that:
As benchmark, concrete steps are as follows with the graywall quality:
(1) return wet
Get the normal-temperature water of 6%～8% salt and 80%～100% in rotary drum, changeed 10～15 minutes, put into sour skin after waiting salt to dissolve fully, 1%～1.5% sodium bicarbonate with the dilution of 10 times water after, add at twice in the rotary drum, regulating pH is 5.5～6.0, and continuing changeed 20～30 minutes;
(2) pretan
The first step is gone back to the wet back of finishing and is added 4%～6% vegetable tanning agent in the rotary drum, rotated at normal temperatures 3～5 hours, after be warming up to 30～40 ℃, be rotated further 3～5 hours, add 0.5%～1% formic acid and regulate pH to 4.0, stop bulgingly, spend the night;
(3) degreasing
The second step operation is finished 30～40 ℃ of water that the back adds 1%～1.5% grease-removing agent and 100%～150% in rotary drum, changes 30～40 minutes, change liquid after, washed discharge opeing 10～15 minutes with 30～40 ℃ of water of 200%～300%;
(4) stuffing
40～55 ℃ of water of adding 100%～150% in the rotary drum after the 3rd step, operation was finished, add in the rotary drum with 40～55 ℃ of water 10%～20% fatting agent being melted with boiling water, change after 5～10 minutes, guarantee that temperature reaches 40～55 ℃ in the drum, changeed 1～1.5 hour, add formic acid and fix, regulate pH to 4.0, discharge opeing;
(5) replenish tanning
Add the normal-temperature water of 2%～4% organic phosphine tanning agent and 80%～100% after the stuffing again in rotary drum, rotated 2～3 hours, the sodium-acetate of adding 1%, rotated 20～30 minutes, and then 1.5%～2% sodium bicarbonate was opened with 5 times aquation, divide in 3 adding rotary drums, regulate pH to 5.5, be rotated further 30～120min, the normal-temperature water washing with 300% 10～15 minutes, discharge opeing;
(6) oxidation
Replenish and to add 100%～150% normal-temperature water after the tanning, 0.5% hydrogen peroxide rotates 30～40min, and the normal-temperature water with 300% was washed 10～15 minutes, discharge opeing;
(7) except formaldehyde
Add 100%～150% normal-temperature water after the oxidation, add the amino branch-shape polymer of 1%～3% end, changeed discharge opeing 60～120 minutes;
(8) replenish stuffing
Except behind the formaldehyde, add 40～55 ℃ of water of 100%～150% in the rotary drum, with 40～55 ℃ of water 8%～10% fatting agent is being melted with boiling water in the adding rotary drum, change after 10～15 minutes, guarantee that temperature reaches 40～55 ℃ in the drum, changeed 1～1.5 hour, add formic acid and fix, regulate pH to 4.0;
(9) drying and finishing process get final product according to a conventional method.
2. the process for tanning of non-metal tanned goat leather for making garment as claimed in claim 1 is characterized in that, vegetable tanning agent is done pretanning agent, and the organic phosphine tanning agent is done additional tanning agent.
3. the process for tanning of non-metal tanned goat leather for making garment as claimed in claim 1 is characterized in that, will hold amino branch-shape polymer to introduce in the leather processing technology and do methanal trapping agent, plays filling effect simultaneously.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101892330A (en) * | 2010-06-29 | 2010-11-24 | 峰安皮业股份有限公司 | Leather processing method capable of reducing formaldehyde content |
| CN102758029B (en) * | 2012-07-09 | 2014-04-02 | 陕西科技大学 | Method for chrome-free tanning beach woolfell by adopting chrome-free tanning agent |
| CN102978300B (en) * | 2012-11-26 | 2015-05-06 | 浙江明新皮业有限公司 | Method for tanning ecological automobile leather in unsalted no-pickling manner |
| CN104060001B (en) * | 2014-07-10 | 2016-01-13 | 北京泛博科技有限责任公司 | A kind of de-aldehyde agent and preparation method thereof |
| IT202000015334A1 (en) * | 2020-06-25 | 2021-12-25 | Chiorino Tech S P A | PROCESS FOR THE COATING OF VEGETABLE TANNED LEATHER |
Citations (5)
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| US4889811A (en) * | 1985-09-18 | 1989-12-26 | Rohm Gmbh | Methods for making leather |
| EP0643081A1 (en) * | 1993-09-10 | 1995-03-15 | Hoechst Aktiengesellschaft | Polymers of vinylsulfonic acid |
| CN1278304A (en) * | 1997-10-30 | 2000-12-27 | 罗迪亚消费特殊有限公司 | Tanning leather |
| CN101182589A (en) * | 2007-11-16 | 2008-05-21 | 陕西科技大学 | Method of THP and multi-amino-compounds combining tanning leather |
| CN101358252A (en) * | 2008-09-28 | 2009-02-04 | 四川大学 | Tanning method of nano SiO2 or TiO2 tanning agents |
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2009
- 2009-09-14 CN CN 200910023917 patent/CN101724719B/en active Active
Patent Citations (5)
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|---|---|---|---|---|
| US4889811A (en) * | 1985-09-18 | 1989-12-26 | Rohm Gmbh | Methods for making leather |
| EP0643081A1 (en) * | 1993-09-10 | 1995-03-15 | Hoechst Aktiengesellschaft | Polymers of vinylsulfonic acid |
| CN1278304A (en) * | 1997-10-30 | 2000-12-27 | 罗迪亚消费特殊有限公司 | Tanning leather |
| CN101182589A (en) * | 2007-11-16 | 2008-05-21 | 陕西科技大学 | Method of THP and multi-amino-compounds combining tanning leather |
| CN101358252A (en) * | 2008-09-28 | 2009-02-04 | 四川大学 | Tanning method of nano SiO2 or TiO2 tanning agents |
Non-Patent Citations (1)
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| 强西怀 等.端氨基PAMAM树枝状化合物捕获皮革中游离甲醛能力的研究.《中国皮革》.2007,第36卷(第9期),22-24. * |
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