CN103938460A - Water dyeing method of semi-polyurethane leather - Google Patents
Water dyeing method of semi-polyurethane leather Download PDFInfo
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- CN103938460A CN103938460A CN201310018658.0A CN201310018658A CN103938460A CN 103938460 A CN103938460 A CN 103938460A CN 201310018658 A CN201310018658 A CN 201310018658A CN 103938460 A CN103938460 A CN 103938460A
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Abstract
The invention discloses a water dyeing method of semi-polyurethane leather. The water dyeing method of the semi-polyurethane leather comprises the steps that (1) a polyurethane surface layer sizing agents are coated on release paper and then put into a drying oven to be dried; (2) five to ten weight percent of foaming layer sizing agents are coated; (3) an adhesive layer is coated, the thickness of the adhesive layer is 0.05-0.1 mm, and then the adhesive layer is put into the drying oven to be dried; (4) base leather is obtained by stripping and coiling the release paper, surface treatment is carried out, and then a semi-polyurethane leather finished product is obtained. The water dyeing method of the semi-polyurethane leather selects water-borne adhesives, the use quantity of organic solvents in the making process of the semi-polyurethane leather is reduced, and environmental pollution is relieved. The semi-polyurethane leather made through the method is pure white in appearance, good in product performance, good in hand feeling and suitable for being used for making gloves, clothes, cases and the like.
Description
Technical field
The invention belongs to artificial synthetic leather technical field, be specifically related to a kind of water dyeing method of half polyurethane leather.
Background technology
Half polyurethane leather (half PU leather) is the upgrading products of PVC leather, be characterized in that top layer is PU, bottom is PVC, both there is PU and removed from office good feel, outward appearance, ventilative, moisture-inhibiting and surperficial tractable characteristic, there is again durable in use, the cheap advantage of PVC leather, the market competitiveness is strong, has been widely used in fields such as producing case and bag, clothes, footwear, furniture, sports goods, has accounted for 30～40% of dermatine output.
But half PU leather industry is also faced with the severe challenge of environmental pollution.Exhaust emission on half PU leather production line mainly comes from the unordered discharge of the organic solvent in the place's agent of solvent-borne type table, surface layer resin, adhesive, and these solvents have dimethyl formamide (DMF), toluene, ethyl acetate, butyl acetate, butanone and dimethoxym ethane etc.Therefore, artificial leather industry be faced with for a long time that environmental improvement cost is high, serious waste of resources, environmental pollution stern challenge.
At present, in the production method of artificial leather, rubbing method (comprising direct rubbing method and transfer coated method) is the main manufacture methods of artificial leather.In the manufacture process of rubbing method PVC leather, need that solvent-borne type table place resin, solvent-borne type surface layer resin and solvent welding glue, table place resin etc. give that leather adds lustre to, delustring and various effector function, these table place resins, surface layer resin and adhesive glue are taking solvent type PU or acrylic acid as main, organic solvent is inflammable and explosive, smell is large, toxicity is large, both there is potential safety hazard, endangered again worker's physical and mental health.
In addition, the following problem of the current half normal appearance of PU leather product: the problem of (1) aberration, the reason and the foaming layer that produce have relation, as the excess Temperature of baking oven or too low, excess Temperature causes foaming layer too thick, causing foaming layer too thin as temperature is too low, is also the thickness problem that has influence on finished product, also has influence on the depth of color simultaneously; (2) get blister, misoperation just there will be this situation in process of production; (3) there is delamination.
Therefore, along with the raising of people's living standard, people have higher requirement to the ecological property of leather goods, and half traditional PU leather manufacture method cannot meet the process hides requirement of eco-friendly, also cannot meet double PU and remove from office the instructions for use in product appearance and performance.
Summary of the invention
For solving the problems of the technologies described above, the invention provides that a kind of consumption of organic solvent is few, the water dyeing method of environmental friendliness and long-lived a kind of half polyurethane leather.
For achieving the above object, the technical solution used in the present invention is:
A water dyeing method for half polyurethane leather, comprises the steps:
(1) polyurethane surface layer slurry is coated with and is scraped in release liners, coating layer thickness is 0.1～0.3mm; Put into again baking oven dry, first dry 30～60 seconds for 90～100 DEG C, then 120～140 DEG C dry 30～60 seconds;
(2) on the polyurethane surface layer of step (1), be coated with and scrape 5～10%wt foaming layer slurry, coating layer thickness is 0.1～0.3mm, then puts into baking oven with 175～185 DEG C of dry plasticizings 30～60 seconds;
(3) on step (2) foaming layer slurry, be coated with and scrape adhesive layer, bondline thickness is 0.05～0.1mm, then it is dry 2～10 hours with 155～160 DEG C to put into baking oven;
(4) peel off with release liners, rolling obtains bottom leather, then carry out surface treatment and obtain half polyurethane leather finished product.
The foaming layer slurry of above-mentioned steps (2) is foam polyvinyl chloride layer slurry.
For reducing environmental pollution, reduce the consumption of organic solvent, the adhesive that in above-mentioned steps (3), adhesive layer uses is aqueous adhesive polycarbodiimide, poly-ethylenimide or epoxy resin.
Beneficial effect of the present invention: the present invention selects aqueous adhesive, has reduced the consumption of organic solvent in half PU leather preparation, has alleviated environmental pollution; Half PU leather outward appearance prepared by the present invention is pure white, later stage does not need to cover with paint, lacquer, colour wash, etc. embossing, keep synthetic leather lines, after dyeing is fixing, directly do the synthetic leather of finished product, properties of product are good, there is better outward appearance and soft and smooth feel, use for a long time not fugitive color, be suitable for making case and bag, clothes, footwear, furniture, sports goods etc.
Detailed description of the invention
Embodiment 1
A water dyeing method for half polyurethane leather, comprises the steps:
Polyurethane surface layer slurry is coated with and is scraped in release liners, and coating layer thickness is 0.2mm; Put into again baking oven dry, first dry 30 seconds for 100 DEG C, then 130 DEG C dry 30 seconds; On polyurethane surface layer, be coated with and scrape 5%wt foam polyvinyl chloride layer slurry again, coating layer thickness is 0.2mm, then puts into baking oven with 180 DEG C of dry plasticizings 30 seconds; On foaming layer slurry, be coated with and scrape adhesive layer, taking polycarbodiimide as adhesive, sticky platform layer thickness is 0.08mm, puts into baking oven and is dried 4 hours with 155～160 DEG C; Peel off with release liners, rolling obtains bottom leather, more routinely technique embossing, carry out surface treatment, behind table place, rub line, obtain half polyurethane leather finished product after dry through routine.
The half PU leather outward appearance that this method is produced is white, and outward appearance is beautiful, and feel is soft and smooth, and expansion ratio is 2.0, and softness is moderate.
Embodiment 2
A water dyeing method for half polyurethane leather, comprises the steps:
Polyurethane surface layer slurry is coated with and is scraped in release liners, and coating layer thickness is 0.3mm; Put into again baking oven dry, first dry 60 seconds for 100 DEG C, then 130 DEG C dry 30 seconds; On polyurethane surface layer, be coated with and scrape 10%wt foam polyvinyl chloride layer slurry again, coating layer thickness is 0.2mm, then puts into baking oven with 180 DEG C of dry plasticizings 30 seconds; On foaming layer slurry, be coated with and scrape adhesive layer, taking epoxy resin as adhesive, bondline thickness is 0.06mm, puts into baking oven and is dried 8 hours with 155～160 DEG C; Peel off with release liners, rolling obtains bottom leather, more routinely technique embossing, carry out surface treatment, behind table place, rub line, obtain half polyurethane leather finished product after dry through routine.
The half PU leather outward appearance that this method is produced be white, natural light, and coating has good wear-resisting, scratch resistance and antifouling property, and feel is soft and smooth, plentiful abundant.
Claims (3)
1. a water dyeing method for half polyurethane leather, is characterized in that comprising the steps:
(1) polyurethane surface layer slurry is coated with and is scraped in release liners, coating layer thickness is 0.1～0.3mm; Put into again baking oven dry, first dry 30～60 seconds for 90～100 DEG C, then 120～140 DEG C dry 30～60 seconds;
(2) on the polyurethane surface layer of step (1), be coated with and scrape 5～10%wt foaming layer slurry, coating layer thickness is 0.1～0.3mm, then puts into baking oven with 175～185 DEG C of dry plasticizings 30～60 seconds;
(3) on step (2) foaming layer slurry, be coated with and scrape adhesive layer, bondline thickness is 0.05～0.1mm, then it is dry 2～10 hours with 155～160 DEG C to put into baking oven;
(4) peel off with release liners, rolling obtains bottom leather, then carry out surface treatment and obtain half polyurethane leather finished product.
2. the water dyeing method of a kind of half polyurethane leather according to claim 1, is characterized in that: the foaming layer slurry of described step (2) is foam polyvinyl chloride layer slurry.
3. the water dyeing method of a kind of half polyurethane leather according to claim 1, is characterized in that: the adhesive that in described step (3), adhesive layer uses is aqueous adhesive polycarbodiimide, poly-ethylenimide or epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310018658.0A CN103938460A (en) | 2013-01-18 | 2013-01-18 | Water dyeing method of semi-polyurethane leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310018658.0A CN103938460A (en) | 2013-01-18 | 2013-01-18 | Water dyeing method of semi-polyurethane leather |
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| CN103938460A true CN103938460A (en) | 2014-07-23 |
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| CN201310018658.0A Pending CN103938460A (en) | 2013-01-18 | 2013-01-18 | Water dyeing method of semi-polyurethane leather |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104745743A (en) * | 2015-03-10 | 2015-07-01 | 海宁富邦汽车内饰有限公司 | Method for treating surface of automobile leather |
| CN105348960A (en) * | 2015-11-17 | 2016-02-24 | 广东银洋树脂有限公司 | Environment-friendly coating realizing rapid coating, and preparation and usage methods thereof |
| CN107904975A (en) * | 2017-12-11 | 2018-04-13 | 福建宝利特科技股份有限公司 | One kind inhales line or embossing artificial leather and preparation method thereof |
| CN108049192A (en) * | 2017-12-05 | 2018-05-18 | 福建宝利特科技股份有限公司 | The preparation method of gradient color PU/PVC composite artificial leathers |
| CN108297459A (en) * | 2017-12-29 | 2018-07-20 | 合肥市安山涂层织物有限公司 | A kind of production method of no base fabric artificial leather |
| CN110306352A (en) * | 2019-07-30 | 2019-10-08 | 浙江百得利制革有限公司 | A kind of preparation process of double-face leather clothing leather |
| CN114000362A (en) * | 2021-11-09 | 2022-02-01 | 福建华大利合成革有限公司 | Breathable environment-friendly leather and preparation method thereof |
Citations (4)
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| US3527653A (en) * | 1966-06-18 | 1970-09-08 | Glanzstoff Ag | Production of a microporous artificial leather coating |
| CN1053025C (en) * | 1994-12-30 | 2000-05-31 | 三芳化学工业股份有限公司 | Dry polyurethane synthetic skin with high-solidity, divisible shapes and zero-pollution |
| CN101974142A (en) * | 2010-10-22 | 2011-02-16 | 温州市长丰人造革有限公司 | Environmental-friendly PU (Polyurethane) resin and environmental-friendly PU leather prepared therefrom and method for preparing PU leather |
| CN102433765A (en) * | 2011-11-09 | 2012-05-02 | 四川大学 | Method for manufacturing environment-friendly semi-polyurethane leather |
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2013
- 2013-01-18 CN CN201310018658.0A patent/CN103938460A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3527653A (en) * | 1966-06-18 | 1970-09-08 | Glanzstoff Ag | Production of a microporous artificial leather coating |
| CN1053025C (en) * | 1994-12-30 | 2000-05-31 | 三芳化学工业股份有限公司 | Dry polyurethane synthetic skin with high-solidity, divisible shapes and zero-pollution |
| CN101974142A (en) * | 2010-10-22 | 2011-02-16 | 温州市长丰人造革有限公司 | Environmental-friendly PU (Polyurethane) resin and environmental-friendly PU leather prepared therefrom and method for preparing PU leather |
| CN102433765A (en) * | 2011-11-09 | 2012-05-02 | 四川大学 | Method for manufacturing environment-friendly semi-polyurethane leather |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104745743A (en) * | 2015-03-10 | 2015-07-01 | 海宁富邦汽车内饰有限公司 | Method for treating surface of automobile leather |
| CN105348960A (en) * | 2015-11-17 | 2016-02-24 | 广东银洋树脂有限公司 | Environment-friendly coating realizing rapid coating, and preparation and usage methods thereof |
| CN108049192A (en) * | 2017-12-05 | 2018-05-18 | 福建宝利特科技股份有限公司 | The preparation method of gradient color PU/PVC composite artificial leathers |
| CN107904975A (en) * | 2017-12-11 | 2018-04-13 | 福建宝利特科技股份有限公司 | One kind inhales line or embossing artificial leather and preparation method thereof |
| CN108297459A (en) * | 2017-12-29 | 2018-07-20 | 合肥市安山涂层织物有限公司 | A kind of production method of no base fabric artificial leather |
| CN110306352A (en) * | 2019-07-30 | 2019-10-08 | 浙江百得利制革有限公司 | A kind of preparation process of double-face leather clothing leather |
| CN114000362A (en) * | 2021-11-09 | 2022-02-01 | 福建华大利合成革有限公司 | Breathable environment-friendly leather and preparation method thereof |
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Application publication date: 20140723 |
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