CN102586899B - Method for extracting spinnable collagenous fiber from leather corner waste and waste leather - Google Patents
Method for extracting spinnable collagenous fiber from leather corner waste and waste leather Download PDFInfo
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- CN102586899B CN102586899B CN201210072696XA CN201210072696A CN102586899B CN 102586899 B CN102586899 B CN 102586899B CN 201210072696X A CN201210072696X A CN 201210072696XA CN 201210072696 A CN201210072696 A CN 201210072696A CN 102586899 B CN102586899 B CN 102586899B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use
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Abstract
The invention belongs to the technical field of leather processing and particularly relates to a method for extracting spinnable collagenous fiber from leather corner waste and waste leather. The method comprises the steps of soaking and smashing collected leather corner waste and waste leather, adopting a wet method fiber extraction method to extract fiber from raw materials, processing the raw materials without adding chemical additives, and enabling the raw materials to be completely dissociated and loosened into collagenous fiber. Therefore, fiber output rate is high, the problem that extraction efficiency is low is resolved, separation evenness of fiber is improved, strength of leather collagenous fiber is guaranteed, and length distribution is even.
Description
Technical field
The invention belongs to the leather processing technical field, be specifically related to a kind of leather leftover bits and Leather Waste and extract and can spin the collagenous fibres method.
Background technology
China is universally acknowledged process hides and shoemaking big producing country; in recent years; the annual foreign exchange earning of development of China leather industry staple total value is at 30,000,000,000 dollars, and leather industry develops when to national economy, creating remarkable benefit, brings huge burden and pressure also for environmental protection, the ecological balance.
Present tannery more than 90% adopts the chrome tanning master to tan.The mechanical processing process such as the repeatedly deburring after chrome tanning, shaving, buffing, inevitably can produce a large amount of chromium discarded objects (also claiming chrome leather slag, chrome shavinge) that contain.Its weight in wet base accounts for 50% of protide solid leather wastes, but dry weight (being protein content) accounts for more than 70%, and the processing problem of a large amount of chrome leather discarded objects is at home and abroad a difficult problem always.It is reported, the annual process hides solid waste that produces 150,000 tons of India; Approximately 60,000 tons, the annual chrome leather discarded object that produces of the U.S..China's leather output accounts for 1/5～1/4 of the world, particularly leather industry cuts open wet blue and shaving technique, chromium solid waste ratio was high, amount is many containing of producing, it is estimated approximately produce more than 70 ten thousand tons (weight in wet base) present every year contain chromium refuse, the leather corner discarded object of more than 140 ten thousand tons (comprise and contain the chromium leather castoff).These solid waste are one of key factors that cause the leather industry pollution, and the chromium in these discarded objects can cause serious pollution to soil and groundwater.
Recovery to the Leather Waste goods has caused people's great attention with utilization.Patent both domestic and external or report, be mostly by the chrome leather discarded object after mechanical treatment, separately or mix with natural fabrics such as cotton, fiber crops, silks, plate, nonwoven fabric, artificial leather base material, blend fibre (felt and woollen goods) etc. are removed from office in production, also can be used as plastic filler and rubber reinforcement material.Japan's great grade in De Gang village is also utilized soundproof effect and the acoustic characteristic of leather fiber multihole material uniqueness, develops acoustic material and loudspeaker horn.The application market of this series products is limited to very much, and added value is not high, and the sanitation performance of regenerated leather goods and intensity are all not as good as natural leather.
Along with the fast development of non-woven industry, kinds of fibers that can be non-woven is more and more, and the exploitation that can spin collagenous fibres has very large value to enriching the nonwoven products kind.
Patent CN200510032848.3 has made referrals to a kind of manufacture method of leather fibre based cloth, in literary composition, mentioned the Leather Waste of animal's leather defect ware or leftover bits and pieces and recovery has been obtained to leather fiber through processing, but need to decolour to raw material, the kinds of processes means such as classification process, technique is loaded down with trivial details, and to add the additives such as degreasing agent and bleaching agent, can cause fiber self strength decreased.And use equipment is non-standard home-built equipment, is difficult for applying.
Patent CN200510038623.9 has made referrals to a kind of leather fiber separating machine, namely the raw material leather is carried to fiber device used, but this apparatus structure complexity, fiber output ratio is low, adopts this device fiber output ratio to only have 30～50%, and wastage of material is serious, and efficiency is low.
The patents of invention such as patent CN200810060022.1, CN200610035347.5 and CN101935896A have also all been carried out improvement and the renewal of equipment and method to the extraction of leather collagen fiber, but the effect of extraction efficiency, fiber length, intensity and the subsequent applications extracted is all unsatisfactory.The equipment of the more important thing is is non-standard equipment, is difficult to apply.
Summary of the invention
The purpose of this invention is to provide a kind of leather leftover bits and Leather Waste and extract and can spin the collagenous fibres method, the spun collagenous fibres that can take easy technique and standard industry equipment to obtain having excellent specific property, and fiber output ratio is high.
A kind of leather leftover bits of the present invention and Leather Waste extract can spin the collagenous fibres method, comprises the following steps:
(1) raw material immersion: by leather leftover bits or Leather Waste at normal temperatures through water soaking 1～2 day;
(2) particle: soaked bulk raw is broken into to the fritter that specification is 5～50 * 5～50cm;
(3) wet method is carried fiber: by particle and water according to mass ratio 1～5: 10 put into beater, and it is 200%～300% pasty state collagenous fibres that operation 30～90min obtains the water-filling degree;
(4) water squeezing is stretched: the pasty state collagenous fibres are layered on the through type wringing machine by water squeezing, and after water squeezing, biodiversity content is 50%～70%;
(5) exhibition is fine: the collagenous fibres that obtain after water squeezing are put into to y type stainless steel rotary drum transfer 30～50min, caking or agglomerating fiber are evacuated, unclamped, and the gentle ventilation unit that adds in y type stainless steel rotary drum makes the collagenous fibres that machine biodiversity content be reduced to 30%～50% simultaneously;
(6) thick shredding, smart shredding: adopt existing technique to carry out shredding processing to fiber.
Wherein, what the present invention preferably adopted is the paper grade (stock) beater, and the model that can select is ZQFSr-23, ZQFSr-200, ZQFSr-800.Paper grade (stock) beater and leather fiber uncoiling machine are the machinery of different field, but the leather fiber uncoiling machine is non-standard equipment, and the effect of extraction efficiency, fiber length, intensity and the subsequent applications extracted is all unsatisfactory, is difficult to apply.The applicant finds that by test the making beating cutter of paper grade (stock) beater can be under Hydraulic Circulation tear the fiber separation of leather collagen cohesion, but must regulate beating time according to leather waste thickness, water status, time is too short, and collagenous fibres can not fully separate; Overlong time, collagenous fibres are too short by the cutter cutting, so the assurance time is determined at 30～90min.In addition, the paper grade (stock) beater is standard device, can conveniently promote.
The temperature of heating of y type stainless steel rotary drum is preferably 40～60 ℃, and ventilation volume is preferably 15L/h.
The invention has the advantages that: effectively reclaim leather leftover bits and Leather Waste, the method that adopts wet method to carry fiber is carried fibre to raw material on the paper grade (stock) beater, do not need to add chemical addition agent to process raw material, raw material can become collagenous fibres, fiber output ratio 90%～100% fully, thereby solved the low problem of extraction efficiency, improve the fiber separation uniformity, keep the intensity of leather collagen fiber, distribution of lengths is even, reduce and consume, cost-saving.
The accompanying drawing explanation
Fig. 1 is that 2000 times of scanning electron microscope (SEM) photographs are amplified at the collagenous fibres A position of embodiment 1;
Fig. 2 is that 5000 times of scanning electron microscope (SEM) photographs are amplified at the collagenous fibres A position of embodiment 1;
Fig. 3 is that 2000 times of scanning electron microscope (SEM) photographs are amplified at the collagenous fibres B position of embodiment 1;
Fig. 4 is that 5000 times of scanning electron microscope (SEM) photographs are amplified at the collagenous fibres B position of embodiment 1.
The specific embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Embodiment 1:
According to following steps, produce collagenous fibres:
(1) raw material immersion: by after leather leftover bits or Leather Waste at normal temperatures through water soaking 2 days;
(2) particle: soaked bulk raw is broken into to the fritter that specification is 10 * 20cm;
(3) wet method is carried fiber: particle and water are put into to beater according to mass ratio at 3: 10, and it is 258% pasty state collagenous fibres that operation 60min obtains the water-filling degree;
(4) water squeezing is stretched: the pasty state collagenous fibres are layered on the through type wringing machine by water squeezing, and after water squeezing, biodiversity content is 64%.
(5) exhibition is fine: the collagenous fibres that obtain after water squeezing are put into to y type stainless steel rotary drum transfer 50min, caking or agglomerating fiber are evacuated, unclamped, and the gentle ventilation unit that adds in y type stainless steel rotary drum makes the collagenous fibres that machine biodiversity content be reduced to 41% simultaneously;
(6) thick shredding, smart shredding: adopt existing technique to carry out shredding processing to fiber.
What wherein, the present embodiment adopted is ZQFSr-800 paper grade (stock) beater.The temperature of heating of y type stainless steel rotary drum is 60 ℃, and ventilation volume is 15L/h.
Table 1: the strength test of obtained collagenous fibres (sample quantities is 40)
Table 2: the regain test (sample quantities is 1) of obtained collagenous fibres
| The sample title | Regain (%) | Reference standard |
| Collagenous fibres | 21.22 | GB/T 9995-1997 |
Table 3: the length testing of obtained collagenous fibres (sample quantities is 180)
| Project name | Mean value | Remarks |
| Length (cm) | 1.78 | CV value: 51.7% |
Table 4: the fineness test (sample quantities is 1502) of obtained collagenous fibres
| Project name | Mean value | Remarks |
| Fineness (μ m) | 9.11 | The CV value: 72.96% is converted into 4.33dtex |
Table 5: the degree of crystallinity test of obtained collagenous fibres
| Project name | Mean value |
| Degree of crystallinity | 30.41％ |
The collagenous fibres that the method that table 1 explanation is adopted makes, be not subject to the effect of chemicals, and every pi of strength is better than the fibers such as cotton, hair, is a kind of desirable fiber-spinnable material.Table 2 shows that prepared fiber has moisture regain, has good textile process performance.Table 3 shows that the average length of fiber is longer, possesses the textile process performance fully.Table 4 fineness value shows that this kind collagenous fibres are a kind of thinner fibers, have spinning property.Table 5 shows that the degree of crystallinity of collagenous fibres is 30% left and right, illustrates that in the chemical constitution of fiber, crystalline texture accounts for 30% left and right, and fibre strength is had to contribution, and this collagenous fibres not only have some strength, and certain flexibility is arranged, and possess the textile process performance.
Fig. 1～Fig. 4 is the electron-microscope scanning figure that two positions of A, B that collagenous fibres are chosen are at random done, and by figure, can observe the collagenous fibres surface topography rough, and trickle fibril is arranged, and is distributed in surface, illustrates that fiber has certain cohesive force, and spinnability is strong.
Claims (3)
1. leather leftover bits and Leather Waste extract and can spin the collagenous fibres method, it is characterized in that comprising the following steps:
(1) raw material immersion: by leather leftover bits or Leather Waste at normal temperatures through water soaking 1～2 day;
(2) particle: soaked bulk raw is broken into to the fritter that specification is 5～50 * 5～50cm;
(3) wet method is carried fiber: particle and water are put into to the paper grade (stock) beater according to mass ratio 1～5:10, and it is 200%～300% pasty state collagenous fibres that operation 30～90min obtains the water-filling degree;
(4) water squeezing is stretched: the pasty state collagenous fibres are layered on the through type wringing machine by water squeezing, and after water squeezing, biodiversity content is 50%～70%;
(5) exhibition is fine: the collagenous fibres that obtain after water squeezing are put into to y type stainless steel rotary drum transfer 30～50min, caking or agglomerating fiber are evacuated, unclamped, and the gentle ventilation unit that adds in y type stainless steel rotary drum makes the collagenous fibres that machine biodiversity content be reduced to 30%～50% simultaneously;
(6) thick shredding, smart shredding: adopt existing technique to carry out shredding processing to fiber.
2. leather leftover bits according to claim 1 and Leather Waste extract and can spin the collagenous fibres method, it is characterized in that the temperature of heating of y type stainless steel rotary drum is 40～60 ℃.
3. leather leftover bits according to claim 1 and Leather Waste extract and can spin the collagenous fibres method, it is characterized in that the ventilation volume of y type stainless steel rotary drum is 15L/h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210072696XA CN102586899B (en) | 2012-03-19 | 2012-03-19 | Method for extracting spinnable collagenous fiber from leather corner waste and waste leather |
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| CN201210072696XA CN102586899B (en) | 2012-03-19 | 2012-03-19 | Method for extracting spinnable collagenous fiber from leather corner waste and waste leather |
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| CN102586899A CN102586899A (en) | 2012-07-18 |
| CN102586899B true CN102586899B (en) | 2013-11-20 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106087076B (en) * | 2016-08-29 | 2018-06-19 | 福建永盛皮革制品有限公司 | The method of leather collagen fiber and leather collagen fiber obtained are made with wet blue leftover pieces |
| CN106283278B (en) * | 2016-08-29 | 2018-12-04 | 福建永盛皮革制品有限公司 | A method of corium fabric is extracted using waste and old finished leather |
| CN107059142B (en) * | 2017-04-01 | 2018-02-13 | 顾勇杰 | A kind of overlength cattle-hide collagen fibers and its preparation method and application |
| CN107287975B (en) * | 2017-07-10 | 2020-01-10 | 台州中知英健机械自动化有限公司 | Treatment method of waste leather |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063237A (en) * | 2006-04-30 | 2007-10-31 | 张立文 | Liquid opening machine |
| CN101235559A (en) * | 2008-02-29 | 2008-08-06 | 尹金良 | Method for producing leather fibre cotton and leather flocking machine |
| CN101935896A (en) * | 2010-07-30 | 2011-01-05 | 韩仕银 | Method for manufacturing leather fibers |
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| JPS514301A (en) * | 1974-07-01 | 1976-01-14 | Fujita Shoten Kk | SHOSHOKAISHUKORAAGENSENINO SEIZOHOHO |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063237A (en) * | 2006-04-30 | 2007-10-31 | 张立文 | Liquid opening machine |
| CN101235559A (en) * | 2008-02-29 | 2008-08-06 | 尹金良 | Method for producing leather fibre cotton and leather flocking machine |
| CN101935896A (en) * | 2010-07-30 | 2011-01-05 | 韩仕银 | Method for manufacturing leather fibers |
Non-Patent Citations (1)
| Title |
|---|
| JP特开昭51-4301A 1976.01.14 |
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