CN105386326A - Method for obtaining regenerative wet slurry filling leather by recycling leather leftover materials - Google Patents
Method for obtaining regenerative wet slurry filling leather by recycling leather leftover materials Download PDFInfo
- Publication number
- CN105386326A CN105386326A CN201510666565.8A CN201510666565A CN105386326A CN 105386326 A CN105386326 A CN 105386326A CN 201510666565 A CN201510666565 A CN 201510666565A CN 105386326 A CN105386326 A CN 105386326A
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- Prior art keywords
- leather
- polyurethane
- regenerative
- wet process
- wet
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2203/00—Macromolecular materials of the coating layers
- D06N2203/06—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06N2203/068—Polyurethanes
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention relates to a method for obtaining regenerative wet slurry filling leather by recycling leather leftover materials. The method is characterized by comprising the steps that the collected leather leftover materials are cut into pieces and placed into a reaction kettle, dimethylformamide is added into the reaction kettle and mixed to be uniform, and regenerative polyurethane resin is obtained; the dimethylformamide, an auxiliary and pigment are fed into the reaction kettle according to the mass ratio and stirred; then, wood powder, polyurethane wet resin and the regenerative polyurethane resin are sequentially added into the reaction kettle and stirred, the mixture stands still, defoaming is conducted, and regenerative polyurethane wet slurry is obtained; a two-layer leather blank is coated with the obtained regenerative polyurethane wet slurry through a 50-150-mesh coating roll, atomization, spraying and soaking are conducted in sequence, then the leather blank is washed and pressed to be dry, finally the leather blank is hung up to be dried in a drying tunnel, and then the regenerative wet slurry filling leather can be obtained. The method has the advantages that the leather leftover materials can be recycled and then made into polyurethane resin, and the cost in treating the leftover materials is lowered; meanwhile, pollution to the environment is reduced, the economic benefits are high, production and use are flexible, and the obtained regenerative wet slurry filling leather is suitable for scale production of a manufacturer.
Description
Technical field
The present invention relates to and a kind ofly reclaim the method that leather leftover pieces obtain wet method resin filling leather, belong to leather production technical field.
Background technology
Film leather is also transfer pad pasting, is that leather produces conventional method.Transfer paste membrane process is coated in release liners by polyurethane fabric, it is used to form continuous print and uniform film, and then on film coated with adhesive, fit with double-layer fur base or wet method double-layer fur base, through drying and solidification, release liners peeled off, such fabric just transfers to double-layer fur base or wet method double-layer fur base from release liners, and web surface is with the decorative pattern of release liners and brightness.
Due to double-layer fur base out-of-shape and size disunity, there will be part release liners when fitting does not have skin base to fit.These corner locations must be cut out out when peeling off, these leftover pieces contain polyurethane resin, toner, auxiliary agent and filler, and complicated deals with difficulty; If buried or process of burning, this not only causes huge pollution to environment, and also result in the serious waste of resource.At present, because people are to the attention of environmental protection, processing these leftover pieces must please have the enviromental protection enterprise of relevant qualification to process, and processing cost is high, and formality is complicated.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and a kind of method that leather leftover pieces obtain wet method resin filling leather that reclaims is provided; leather leftover pieces can be carried out recovery and can again utilize by it; effective protection of the environment, utilizes resource, reduces production cost.
In order to achieve the above object, the present invention is achieved in that it is that a kind of leather leftover pieces that reclaim obtain regenerating the method that wet process furnish fills leather, it is characterized in that taking following processing step:
Step one production regenerating polyurethane resin
Put into reactor by broken for the leather leftover pieces cutting of collection, add dimethyl formamide in a kettle., with mixer, the leather leftover pieces of collection and dimethyl formamide are fully uniformly mixed, obtain regenerating polyurethane resin; Collected leather leftover pieces and the mass ratio of dimethyl formamide are 1:10-15;
Step 2 produces regenerative polyurethane wet process furnish
Drop into the dimethyl formamide of 23-29%, the auxiliary agent of 0.5-1.0% and 0.2-0.5% colorant by quality hundred parts ratio in a kettle., stir 5-10 minute; Then drop into the wood powder of 11-25% in a kettle., stir 30-60 minute; Drop into again the polyurethane wet resin of 46-59% in a kettle., stir 1-2 hour; Drop into again the regenerating polyurethane resin of 5-10% in a kettle., stir 1-2 hour, standing and defoaming, obtains regenerative polyurethane wet process furnish;
Step 3 is produced regeneration wet process furnish and is filled leather
The regenerative polyurethane wet process furnish 50-150 order applicator roll obtained in step 2 is coated on double-layer fur base, carry out successively atomization 1-5 minute, spray 5-30 minute and soak 4-8 hour, then carry out wash water and press dry, finally skin base is hung up and dry at 40-50 DEG C of drying tunnel, regeneration wet process furnish can be obtained and fill leather, detect regeneration wet process furnish with reference to GB/T2792-2014 and fill leather peel strength.
Described wood powder is order number 400-600 object wood powder.
Described auxiliary agent is cell modifiers, or is defoamer, or is levelling agent, is wet method resin slurry routine and makes used additives.
The present invention's advantage is compared with prior art: can reclaim leather leftover pieces, by its regeneration polyurethane resin, reduces the cost of these leftover pieces of process, reduces the pollution to environment simultaneously; Its flow process is simple, does not need extra input, high financial profit, and production and application is flexible, is applicable to producer's large-scale production.
Detailed description of the invention
Below in conjunction with embodiment, the specific embodiment of the present invention is described further.It should be noted that at this, the explanation for these embodiments understands the present invention for helping, but does not form limitation of the invention.In addition, if below in described each embodiment of the present invention involved technical characteristic do not form conflict each other and just can be combined with each other.
Embodiment one
It is that a kind of leather leftover pieces that reclaim obtain regenerating the method that wet process furnish fills leather, takes following processing step:
Step one
Put into reactor by broken for the leather leftover pieces cutting of collection, add dimethyl formamide in a kettle., with mixer, the leather leftover pieces of collection and dimethyl formamide are fully uniformly mixed, obtain the polyurethane resin regenerated; The mass ratio of the leather leftover pieces that institute limit is collected and dimethyl formamide is 1:10;
Step 2
Above-mentioned regenerating polyurethane resin added in polyurethane wet resin, prepare burden by following formula, concrete mass ratio is as table 1
Table 1
| Title material | Weight (gram) | Percentage (%) |
| Polyurethane wet resin | 100 | 58.31 |
| Regenerating polyurethane resin | 10 | 5.83 |
| Dimethyl formamide | 40 | 23.32 |
| 400 object wood powders | 20 | 11.66 |
| Cell modifiers | 1 | 0.58 |
| Colorant | 0.5 | 0.29 |
| Gross weight | 171.5 | 100 |
Drop into 40 grams of dimethyl formamides, 1 gram of cell modifiers and 0.5 gram of colorant in a kettle., stir 5 minutes; Drop into 20 gram of 400 object wood powder in a kettle. again, stir 30 minutes; Drop into 100 grams of polyurethane wet resins in a kettle. again, stir 1 hour; Drop into 10 grams of regenerating polyurethane resin in a kettle. again, stir 1 hour, standing and defoaming, obtains regenerative polyurethane wet process furnish;
Step 3
The regenerative polyurethane wet process furnish obtained in step 2 50 order applicator rolls are coated on double-layer fur base, carry out atomization 1 minute, spray 5 minutes successively and soak 8 hours, then carry out wash water and press dry, finally skin base is hung up and dry at 40 DEG C of drying tunnels, obtain wet method resin filling leather, detect regeneration wet process furnish with reference to GB/T2792-2014 and fill leather peel strength.
Embodiment two
It is that a kind of leather leftover pieces that reclaim obtain regenerating the method that wet process furnish fills leather, takes following processing step:
Step one
By broken for the leftover pieces cutting of collecting, add dimethyl formamide, the leather leftover pieces of collection and dimethyl formamide are fully uniformly mixed, obtain regenerating polyurethane resin with mixer, wherein the mass ratio of leftover pieces and dimethyl formamide is 1:15;
Step 2
Above-mentioned regenerating polyurethane resin added in polyurethane wet resin, prepare burden by following formula, concrete mass ratio is as table 2
Table 2
| Title material | Weight (gram) | Percentage (%) |
| Polyurethane wet resin | 100 | 46.95 |
| Regenerating polyurethane resin | 20 | 9.39 |
| Dimethyl formamide | 60 | 28.17 |
| 500 order wood powders | 30 | 14.08 |
| Auxiliary agent | 2 | 0.94 |
| Colorant | 1 | 0.47 |
| Gross weight | 213 | 100 |
Drop into 60 grams of dimethyl formamides, 2 grams of auxiliary agents and 1 gram of colorant in a kettle., stir 10 minutes; Drop into 30 gram of 500 order wood powder in a kettle. again, stir 60 minutes; Drop into 100 grams of polyurethane wet resins in a kettle. again, stir 2 hours; Drop into 20 grams of regenerating polyurethane resin in a kettle. again, stir 2 hours, standing and defoaming, obtains regenerative polyurethane wet process furnish;
Step 3
Regenerative polyurethane wet process furnish step 2 obtained 100 order applicator rolls are coated on double-layer fur base, carry out atomization 3 minutes, spray 30 minutes successively and soak 4 hours, then carry out wash water, press dry, finally skin base is hung up and dry at 40-50 DEG C of drying tunnel, obtain wet method resin filling leather, detect regeneration wet process furnish with reference to GB/T2792-2014 and fill leather peel strength.
Embodiment three
It is that a kind of leather leftover pieces that reclaim obtain regenerating the method that wet process furnish fills leather, takes following processing step:
Step one
By broken for the leftover pieces cutting of collecting, add dimethyl formamide, the leather leftover pieces of collection and dimethyl formamide are fully uniformly mixed, obtain regenerating polyurethane resin with mixer, wherein the mass ratio of leftover pieces and dimethyl formamide is 1:12;
Step 2
Above-mentioned regenerating polyurethane resin added in polyurethane wet resin, prepare burden by following formula, concrete mass ratio is as table 3
Table 3
| Title material | Weight (gram) | Percentage (%) |
| Polyurethane wet resin | 106 | 49.91 |
| Regenerating polyurethane resin | 14 | 6.59 |
| Dimethyl formamide | 52 | 24.48 |
| 600 order wood powders | 38 | 17.89 |
| Auxiliary agent | 1.6 | 0.75 |
| Colorant | 0.8 | 0.38 |
| Gross weight | 212.4 | 100 |
Drop into 52 grams of dimethyl formamides, 1.6 grams of auxiliary agents and 0.8 gram of colorant in a kettle., stir 8 minutes; Drop into 38 gram of 600 order wood powder in a kettle. again, stir 45 minutes; Drop into 106 grams of polyurethane wet resins in a kettle. again, stir 1.5 hours; Drop into 14 grams of regenerating polyurethane resin in a kettle. again, stir 1.5 hours, standing and defoaming, obtains regenerative polyurethane wet process furnish.
Step 3
Regenerative polyurethane wet process furnish step 2 obtained 150 order applicator rolls are coated on double-layer fur base, carry out atomization 5 minutes, spray 15 minutes successively, soak 6 hours, then carry out wash water, press dry, finally skin base is hung up and dry at 40-50 DEG C of drying tunnel, obtain wet method resin filling leather, detect regeneration wet process furnish with reference to GB/T2792-2014 and fill leather peel strength.
The regenerating polyurethane resin wet method filling leather peel strength of above embodiment and conventional wet lay are filled leather peel strength and are contrasted as follows:
As can be seen from above peel strength, the wet method leather peel strength adding regenerating polyurethane resin does not decline, the effective quality ensureing product, and the process problem of the leather leftover pieces solved.
Below detailed description is made to embodiments of the present invention, but the present invention is not limited to described embodiment in conjunction with the embodiments.For the ordinary skill in the art, carry out multiple change, amendment, replacement and distortion when not departing from principle of the present invention and aim to these embodiments still to fall within protection scope of the present invention.
Claims (3)
1. reclaim leather leftover pieces to obtain regenerating the method that wet process furnish fills leather, it is characterized in that taking following processing step:
Step one production regenerating polyurethane resin
Reactor is put into by broken for the leather leftover pieces cutting of collection, add dimethyl formamide in a kettle., with mixer, the leather leftover pieces of collection and dimethyl formamide are fully uniformly mixed, obtain regenerating polyurethane resin, the leather leftover pieces of collection and the mass ratio of dimethyl formamide are 1:10-15;
Step 2 produces regenerative polyurethane wet process furnish
Drop into the dimethyl formamide of 23-29%, the auxiliary agent of 0.5-1.0% and 0.2-0.5% colorant by quality hundred parts ratio in a kettle., stir 5-10 minute; Then drop into the wood powder of 11-25% in a kettle., stir 30-60 minute; Drop into again the polyurethane wet resin of 46-59% in a kettle., stir 1-2 hour; Drop into again the regenerating polyurethane resin of 5-10% in a kettle., stir 1-2 hour, standing and defoaming, obtains regenerative polyurethane wet process furnish;
Step 3 is produced regeneration wet process furnish and is filled leather
The regenerative polyurethane wet process furnish 50-150 order applicator roll obtained in step 2 is coated on double-layer fur base, carry out successively atomization 1-5 minute, spray 5-30 minute and soak 4-8 hour, then carry out wash water and press dry, finally skin base is hung up and dry at 40-50 DEG C of drying tunnel, regeneration wet process furnish can be obtained and fill leather, detect regeneration wet process furnish with reference to GB/T2792-2014 and fill leather peel strength.
2. recovery leather leftover pieces according to claim 1 obtain the method for wet method resin filling leather, it is characterized in that described wood powder is order number 400-600 object wood powder.
3. recovery leather leftover pieces according to claim 1 obtain regenerating the method that wet process furnish fills leather, it is characterized in that described auxiliary agent is cell modifiers, or are defoamer, or be levelling agent, be wet method resin slurry routine and make used additives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666565.8A CN105386326A (en) | 2015-10-16 | 2015-10-16 | Method for obtaining regenerative wet slurry filling leather by recycling leather leftover materials |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666565.8A CN105386326A (en) | 2015-10-16 | 2015-10-16 | Method for obtaining regenerative wet slurry filling leather by recycling leather leftover materials |
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| Publication Number | Publication Date |
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| CN105386326A true CN105386326A (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510666565.8A Pending CN105386326A (en) | 2015-10-16 | 2015-10-16 | Method for obtaining regenerative wet slurry filling leather by recycling leather leftover materials |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106519709A (en) * | 2016-11-25 | 2017-03-22 | 史学快 | Waste leather synthesis composition and production process |
| CN107399027A (en) * | 2017-07-18 | 2017-11-28 | 安徽安利材料科技股份有限公司 | A kind of technique for recycling the processing of dry method PU synthetic leather for wet method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912650A (en) * | 2012-10-29 | 2013-02-06 | 海门市大生源合成皮革有限公司 | Method for preparing wet process PU (poly urethane) synthetic leather |
| CN103031737A (en) * | 2011-09-29 | 2013-04-10 | 昆山协兴合成革有限公司 | Production method of hydrolysis resistance regenerating resin synthetic leather |
| CN104213432A (en) * | 2014-09-26 | 2014-12-17 | 江西豪普高科涂层织物有限公司 | Polyurethane (PU) synthetic leather production process allowing solid waste recycling |
-
2015
- 2015-10-16 CN CN201510666565.8A patent/CN105386326A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031737A (en) * | 2011-09-29 | 2013-04-10 | 昆山协兴合成革有限公司 | Production method of hydrolysis resistance regenerating resin synthetic leather |
| CN102912650A (en) * | 2012-10-29 | 2013-02-06 | 海门市大生源合成皮革有限公司 | Method for preparing wet process PU (poly urethane) synthetic leather |
| CN104213432A (en) * | 2014-09-26 | 2014-12-17 | 江西豪普高科涂层织物有限公司 | Polyurethane (PU) synthetic leather production process allowing solid waste recycling |
Non-Patent Citations (1)
| Title |
|---|
| 杨鸣波等: "《高分子材料手册 下》", 31 July 2009 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106519709A (en) * | 2016-11-25 | 2017-03-22 | 史学快 | Waste leather synthesis composition and production process |
| CN107399027A (en) * | 2017-07-18 | 2017-11-28 | 安徽安利材料科技股份有限公司 | A kind of technique for recycling the processing of dry method PU synthetic leather for wet method |
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