CN101694061A - Environment-friendly color-changing method of synthetic leather bass - Google Patents
Environment-friendly color-changing method of synthetic leather bass Download PDFInfo
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- CN101694061A CN101694061A CN200910167935A CN200910167935A CN101694061A CN 101694061 A CN101694061 A CN 101694061A CN 200910167935 A CN200910167935 A CN 200910167935A CN 200910167935 A CN200910167935 A CN 200910167935A CN 101694061 A CN101694061 A CN 101694061A
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Abstract
The invention discloses an environment-friendly color-changing method of synthetic leather bass, characterized by comprising the following steps: adding 100-300 parts by weight of aqueous urethane resin, 20-120 parts by weight of aqueous color paste, 0-9 parts by weight of thickener, 0-3 parts by weight of leveling agent and 0-3 parts by weight of crosslinker to a container with a stirrer; stirring at a room temperature for 25-30 minutes to prepare color-changing slurry; uniformly coating the color-changing slurry on a synthetic leather bass in sizing amount of 80-150g/m, at a drying temperature of 80-120 DEG C and at a drying speed of 15-20m/min; and then, adopting a rolling extrusion or plate extrusion mode to emboss, wherein the rolling extrusion is carried out under the pressure of 25-30MPa, at the temperature of 180-190 DEG C at the speed of 15-20min/min, and plate extrusion is carried out at the pressure of 15-18MPa, at the temperature of 80-90 DEG C and at the period of 3-5s. The method for preparing the color-changing layer and the bass has the advantages of excellent adhesion fastness, simple process, convenient operation, emission reduction and energy saving.
Description
Technical field
The present invention relates to a kind of eco-friendly color-changing method of synthetic leather bass, belong to the production field of synthetic leather.
Background technology
Up to the present, Synthetic Leather relies on its excellent comprehensive performance to become the indispensable main raw materials of industry such as clothes, shoemaking, case and bag, furniture.The manufacture process of Synthetic Leather can be divided into the preparation and the back arrangement two large divisions of bass.In the arrangement process of back, every performance (especially outward appearance) of changing colour to finished leather of bass plays crucial effects.At present, the basic film forming matter that changes colour as bass of industrial common employing solvent type polyurethane resin.Contain toxic solvents such as a large amount of toluene, dimethylbenzene, acetone, butanone, ethyl acetate, dimethyl formamide in this resinoid, they reclaim quite difficulty in the process of changing colour, generally all directly be discharged in river and the atmosphere.At a rough estimate, the toxic organic compound that is discharged in the environment every year of the production process of national synthetic leather reaches more than 100,000 tons; In some areas that the industry of synthetic leather such as Wenzhou is concentrated, the dimethyl formamide that evaporate into every year in the atmosphere has 28000 tons approximately, and nearly 6000 tons of toluene, butanone have caused severe contamination for local environment.In recent years, along with people's environmental consciousness day by day strengthens and the strictness control to polluting all over the world, adopt the filmogen of novel environment friendly to be used for the synthetic leather technology of changing colour, to eliminate the environmental pollution that organic solvent causes in this technology, become the synthetic leather industry and walked sustainable development path, and to the green ecological industry key problem in technology of transition.
Waterborne polyurethane resin is with water compositing dispersion medium, does not wherein contain solvent or contains solvent less.Compare with solvent borne polyurethane, advantage such as that aqueous polyurethane has is nontoxic, smell is little, nonflammable, pollution-free, easy to operate has obtained overall application in fields such as the covering with paint of corium leather, spinning coating, paper industries.The particularity of technology because the synthetic leather bass changes colour, there is serious technological deficiency in aqueous polyurethane application in this respect always.Wherein, the rerum natura of the recoatability of the bonding fastness of the compatibility of aqueous polyurethane emulsion and mill base, auxiliary agent, water paste and bass, aqueous coating, aqueous coating and the comparativity of solvent-based coating etc. all are bottleneck problems anxious to be solved.
Summary of the invention
The objective of the invention is provides a kind of eco-friendly color-changing method of synthetic leather bass at the deficiencies in the prior art.Be characterized in adopting aqueous polyurethane to replace traditional solvent borne polyurethane as the basic film forming matter that changes colour.The layer that changes colour that the present invention is prepared has simple, the easy to operate and reduction of discharging energy-saving advantages of excellent bonding fastness, technology with bass.
Purpose of the present invention is realized that by following technical measures wherein said raw material umber is parts by weight except that specifying.
(1) the water-based preparation of slurry of changing colour:
100～300 parts of waterborne polyurethane resins, 20～120 parts of water-based colors, 0～9 part of thickener, 0～3 part of levelling agent and 0～3 part of adding of crosslinking agent are had in the container of agitator, under room temperature, stir 25～30 minutes standby.
(2) change colour the layer preparation
Adopt brushing method the above-mentioned slurry that changes colour to be evenly coated on the synthetic leather bass starching amount 80～150g/m, 80～120 ℃ of baking temperatures, rate of drying 15～20m/min.
(3) machine printed
After treating that the above-mentioned layer moisture that changes colour volatilizees fully, adopt roll extrusion or plate to press mode embossing, rolling pressure 25～30MPa, roll extrusion speed 15～20m/min, 180～190 ℃ of roll extrusion temperature; Plate pressure pressure 15～18MPa, plate is pressed 80～90 ℃ of temperature, time 3～5s.
Brushing method is for directly being coated with in method, roll coating process, spraying process or the three editions print processes any.
The present invention has following advantage
1. the basic film forming matter that adopts aqueous polyurethane to change colour as the synthetic leather bass, make the organic solvent emission amount in this technology reduce more than 85%, reduce the severe contamination that this technology causes environment significantly, significantly improve direct labor's working environment, help promoting the green ecological construction of synthetic leather industry.
2. the change colour baking temperature of coating of water-based only is 80～120 ℃, the embossing temperature only is 180～190 ℃, all be lower than the change colour corresponding requirements of coating of conventional solvent type: baking temperature is 140～150 ℃, and the embossing temperature is about 210 ℃, so the present invention has the advantage of energy efficient.
3. has excellent bonding fastness according to the prepared layer that changes colour of the present invention with bass, follow-up work can be adopted water-based or solvent-borne type material consolidation, produce most synthetic leather kind on the current market, every performance indications of finished leather all are not less than conventional solvent type product.
The specific embodiment
Below by embodiment the present invention is specifically described.Be necessary to be pointed out that at this present embodiment only is used for the present invention is further specified that can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field can make some nonessential improvement and adjustment according to the content of foregoing invention.
Embodiment 1
(1) the water-based preparation of slurry of changing colour:
Waterborne polyurethane resin 100kg and black water color 20kg added under room temperature, stir in the container that has agitator 25 minutes standby.
(2) change colour the layer preparation
Adopt roll coating process to be evenly coated on the synthetic leather bass starching amount 80g/m, rate of drying 15m/min, 80 ℃ of baking temperatures in the above-mentioned slurry that changes colour.
(3) machine printed
After treating that the above-mentioned layer moisture that changes colour volatilizees fully, adopt the embossing of roll extrusion mode, rolling pressure 25MPa, 180 ℃ of roll extrusion temperature, roll extrusion speed 15m/min.
Embodiment 2
(1) the water-based preparation of slurry of changing colour:
With waterborne polyurethane resin 200kg, brown water-based color 60kg, thickener 3kg and levelling agent 1kg add under room temperature, stir in the container that has agitator 25 minutes standby.
(2) change colour the layer preparation
Adopt spraying process to be evenly coated on the synthetic leather bass starching amount 100g/m, rate of drying 15m/min, 90 ℃ of baking temperatures in the above-mentioned slurry that changes colour.
(3) machine printed
After treating that the above-mentioned layer moisture that changes colour volatilizees fully, adopt plate to press the mode embossing, the plate pressure pressure is 15Mpa, and plate is pressed 80 ℃ of temperature, and the time is 3s.
Embodiment 3
(1) the water-based preparation of slurry of changing colour:
With waterborne polyurethane resin 300kg, cream-coloured water-based color 120kg, thickener 9kg, levelling agent 3kg and crosslinking agent 3kg add under room temperature, stir in the container that has agitator 30 minutes standby.
(2) change colour the layer preparation
Adopt three editions print processes to be evenly coated on the synthetic leather bass starching amount 120g/m, rate of drying 20m/min, 100 ℃ of baking temperatures in the above-mentioned slurry that changes colour.
(3) machine printed
After treating that the above-mentioned layer moisture that changes colour volatilizees fully, adopt plate to press the mode embossing, plate pressure pressure 18Mpa, plate is pressed 90 ℃ of temperature, time 5s.
Embodiment 4
(1) the water-based pulp preparation of changing colour:
With waterborne polyurethane resin 300kg, yellowish-brown water-based color 90kg, levelling agent 3kg and crosslinking agent 3kg add under room temperature, stir in the container that has agitator 30 minutes standby.
(2) change colour the layer preparation
The above-mentioned slurry employing of changing colour directly is coated with method is evenly coated in clothing leather with on the release liners, starching amount 150g/m, rate of drying 20m/min, 120 ℃ of baking temperatures.Treat the above-mentioned layer moisture that changes colour volatilize fully after with its pad pasting on the synthetic leather bass.
(3) machine printed
Adopt the embossing of roll extrusion mode, rolling pressure 30kg, 190 ℃ of roll extrusion temperature, roll extrusion speed 20m/min.
Claims (2)
1. eco-friendly color-changing method of synthetic leather bass is characterized in that this method may further comprise the steps:
(1) the water-based preparation of slurry of changing colour:
100～300 parts of waterborne polyurethane resins, 20～120 parts of water-based colors, 0～9 part of thickener, 0～3 part of levelling agent and 0～3 part of adding of crosslinking agent are had in the container of agitator, under room temperature, stir 25～30 minutes standby;
(2) change colour the layer preparation
Adopt brushing method the above-mentioned slurry that changes colour to be evenly coated on the synthetic leather bass starching amount 80～150g/m, 80～120 ℃ of baking temperatures, rate of drying 15～20m/min;
(3) machine printed
After treating that the above-mentioned layer moisture that changes colour volatilizees fully, adopt roll extrusion or plate to press mode embossing, rolling pressure 25～30MPa, 180～190 ℃ of roll extrusion temperature; Plate pressure pressure 15～18MPa, plate is pressed 80～90 ℃ of temperature, time 3～5s.
2. the method that eco-friendly according to claim 1 synthetic leather bass changes colour, the brushing method of the slurry that it is characterized in that changing colour is for directly being coated with in method, roll coating process, spraying process or the three editions print processes any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910167935A CN101694061A (en) | 2009-10-20 | 2009-10-20 | Environment-friendly color-changing method of synthetic leather bass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910167935A CN101694061A (en) | 2009-10-20 | 2009-10-20 | Environment-friendly color-changing method of synthetic leather bass |
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| Publication Number | Publication Date |
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| CN101694061A true CN101694061A (en) | 2010-04-14 |
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| CN200910167935A Pending CN101694061A (en) | 2009-10-20 | 2009-10-20 | Environment-friendly color-changing method of synthetic leather bass |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452343A (en) * | 2013-09-12 | 2015-03-25 | 福懋兴业股份有限公司 | Fabric provided with special pattern, touch or stereo feeling and produced by non-dye environmentally-friendly process |
| CN104562725A (en) * | 2013-10-27 | 2015-04-29 | 江苏国信合成革有限公司 | High-wear-resistance water-based PUD floor leather and preparation method thereof |
| CN105133368A (en) * | 2015-08-25 | 2015-12-09 | 浙江繁盛超纤制品有限公司 | Aqueous polyurethane superfine fiber sofa synthetic leather direct-coating process |
| CN106087444A (en) * | 2016-07-29 | 2016-11-09 | 嘉兴金州聚合材料有限公司 | A kind of stamp four-side elastic synthetic leather |
| US9803104B2 (en) | 2013-09-12 | 2017-10-31 | Formosa Taffeta Co., Ltd. | Stereoscopic fabrics with special patterns and tactile texture produced by an eco-friendly non-dye formulation |
-
2009
- 2009-10-20 CN CN200910167935A patent/CN101694061A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452343A (en) * | 2013-09-12 | 2015-03-25 | 福懋兴业股份有限公司 | Fabric provided with special pattern, touch or stereo feeling and produced by non-dye environmentally-friendly process |
| US9803104B2 (en) | 2013-09-12 | 2017-10-31 | Formosa Taffeta Co., Ltd. | Stereoscopic fabrics with special patterns and tactile texture produced by an eco-friendly non-dye formulation |
| CN104562725A (en) * | 2013-10-27 | 2015-04-29 | 江苏国信合成革有限公司 | High-wear-resistance water-based PUD floor leather and preparation method thereof |
| CN105133368A (en) * | 2015-08-25 | 2015-12-09 | 浙江繁盛超纤制品有限公司 | Aqueous polyurethane superfine fiber sofa synthetic leather direct-coating process |
| CN105133368B (en) * | 2015-08-25 | 2017-07-07 | 浙江繁盛超纤制品有限公司 | A kind of aqueous polyurethane superfine fiber synthetic leather sofa artificial leather directly applies technique |
| CN106087444A (en) * | 2016-07-29 | 2016-11-09 | 嘉兴金州聚合材料有限公司 | A kind of stamp four-side elastic synthetic leather |
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Open date: 20100414 |