CN102797164A - PU/PVC synthetic leather and its manufacturing method - Google Patents
PU/PVC synthetic leather and its manufacturing method Download PDFInfo
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- CN102797164A CN102797164A CN2012102908021A CN201210290802A CN102797164A CN 102797164 A CN102797164 A CN 102797164A CN 2012102908021 A CN2012102908021 A CN 2012102908021A CN 201210290802 A CN201210290802 A CN 201210290802A CN 102797164 A CN102797164 A CN 102797164A
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Abstract
The invention relates to the synthetic leather manufacturing field, especially to a wear-resistant and scratch-resistant PU/PVC (polyurethane/polyvinyl chloride) synthetic leather and its manufacturing method. The synthetic leather includes a base cloth layer, a polyurethane bonding layer, a polyvinyl chloride foaming layer, as well as a polyurethane fabric layer, and additionally includes a polyvinyl chloride layer, which is positioned between the polyvinyl chloride foaming layer and the polyurethane fabric layer. For the PU/PVC synthetic leather provided in the invention, under the circumstance of not changing the original physical circumstances of the PU/PVC synthetic leather, and by adding a polyvinyl chloride layer between the polyvinyl chloride foaming layer and the polyurethane fabric layer, the synthetic leather surface and the polyvinyl chloride foaming layer are separated. By making use of the scratch-resistant and wear-resistant characteristics of the polyvinyl chloride layer, the scratch resistance and wear resistance of the PU/PVC synthetic leather are greatly enhanced. Martindale wear resistant tests prove that the PU/PVC synthetic leather provided in the invention can resist wear up to over 100000 times.
Description
Technical field
The present invention relates to synthetic leather and make the field, particularly a kind of wear-resisting, scratch resistance type PU/PVC synthetic leather and manufacturing approach thereof.
Background technology
With reference to shown in Figure 1; Existing P U/PVC synthetic leather comprises base cloth layer, the bonding layer of polyurethane, foam polyvinyl chloride layer and polyurethane fabric layer successively; Its manufacturing approach is with reference to shown in Figure 2; Generally comprise following step: 1, material is prepared: select base cloth and lines release liners, preparation polyurethane fabric slurry, foam polyvinyl chloride slurry and polyurethane coating medium etc.; 2, main frame production: (a) at lines release liners surface-coated polyurethane fabric slurry, the oven dry back forms the polyurethane fabric layer; (b) on the polyurethane fabric layer, apply the foam polyvinyl chloride slurry, the foaming back forms the foam polyvinyl chloride layer; (c) the polyurethane coating medium is coated on the foam polyvinyl chloride layer, oven dry forms bonding layer of polyurethane and base cloth layer behind the base cloth of fitting again; (d) remove the lines release liners, obtain the PU/PVC synthetic leather.Through the PU/PVC synthetic leather that above-mentioned steps obtains, because the foam polyvinyl chloride layer is full of cellular spilehole, hole wall is thin; Surface layer PU is attached in the PVC foaming layer that is full of cellular spilehole; Part links to each other with hole wall, and part is unsettled, thereby causes scratch resistance, the anti-wear performance on PU/PVC synthetic leather surface poor (in the wear-resisting test of Martindale; Testing time can only reach 20,000 times) so that goods can not require to use in the wear-resisting field of scratch resistance at automotive trim leather etc.
Summary of the invention
In order to overcome the defective of above-mentioned prior art, technical problem to be solved by this invention provides a kind of scratch resistance anti-wear performance good PU/PVC synthetic leather and manufacturing approach thereof.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopted is:
A kind of PU/PVC synthetic leather comprises base cloth layer, the bonding layer of polyurethane, foam polyvinyl chloride layer and polyurethane fabric layer, also comprises polyvinyl chloride layer, and said polyvinyl chloride layer is between said foam polyvinyl chloride layer and polyurethane fabric layer.
Wherein, said polyvinyl chloride layer forms after by the polyvinyl chloride pulp drying, said polyvinyl chloride pulp by PVC paste resin and other auxiliary agents that do not contain blowing agent form.
Wherein, said polyvinyl chloride pulp is made up of PVC paste resin, plasticizer, stabilizing agent, filler and polyvinyl chloride color.
Wherein, the viscosity of said polyvinyl chloride pulp is 2000～5000cps.
PU/PVC synthetic leather provided by the present invention; Under the situation that does not change the original rerum natura of PU/PVC synthetic leather,, synthetic leather surface and foam polyvinyl chloride layer are separated through between foam polyvinyl chloride layer and polyurethane fabric layer, setting up one deck polyvinyl chloride layer; Utilize the wear-resisting characteristics of polyvinyl chloride layer scratch resistance; Strengthened the scratch resistance anti-wear performance of PU/PVC synthetic leather greatly, proved through the wear-resisting test of Martindale, PU/PVC synthetic leather of the present invention can reach more than 100,000 times.
Further, the invention provides a kind of method for preparing above-mentioned PU/PVC synthetic leather, technical scheme is following:
A kind of manufacturing approach of PU/PVC synthetic leather may further comprise the steps:
Step 1, material are prepared: select base cloth and lines release liners, preparation polyurethane fabric slurry, foam polyvinyl chloride slurry, polyvinyl chloride pulp and polyurethane coating medium;
Step 2, at lines release liners surface-coated polyurethane fabric slurry, oven dry back forms the polyurethane fabric layer;
Step 3, on the polyurethane fabric layer, apply polyvinyl chloride pulp, the oven dry back forms polyvinyl chloride layer;
Step 4, on polyvinyl chloride layer, apply the foam polyvinyl chloride slurry, the foaming back forms the foam polyvinyl chloride layer;
Step 5, on the foam polyvinyl chloride layer coated with polyurethane coating medium, oven dry forms bonding layer of polyurethane and base cloth layer behind the base cloth of fitting again;
Step 6, removal lines release liners obtain the PU/PVC synthetic leather.
Wherein, said polyurethane fabric slurry is formulated by following method: using solvent that polyurethane resin is diluted to viscosity is 500～2000cps, adds the polyurethane colorant then, is stirred well to dissolving fully.
Wherein, said foam polyvinyl chloride slurry is formulated by following method: using plasticizer that PVC paste resin is diluted to viscosity is 2000～5000cps, adds stabilizing agent, blowing agent, filler and polyvinyl chloride color then, fully stirs.
Wherein, said polyvinyl chloride pulp is formulated by following method: using plasticizer that PVC paste resin is diluted to viscosity is 2000～5000cps, adds stabilizing agent, filler and polyvinyl chloride color then, fully stirs.
Wherein, said polyurethane fabric slurry uses accurate coating machine evenly to coat on the lines release liners less than the coating thickness of 0.2mm, under 100～140 ℃ of conditions, dries.
Wherein, said polyvinyl chloride pulp uses accurate coating machine evenly to coat on the polyurethane fabric layer less than the coating thickness of 0.5mm, under 150～170 ℃ of conditions, dries.
Wherein, Said foam polyvinyl chloride slurry uses accurate coating machine evenly to coat on the polyvinyl chloride layer with the coating thickness greater than 0.1mm; Place then in the foaming furnace and under 180～200 ℃ of conditions, foam to appointed thickness, said foaming furnace adopts the top and bottom blowing mode.Because being the above and below from the lines release liners, the top and bottom blowing mode is blown into hot blast simultaneously; Therefore be different from traditional single face blowing mode; Efficiently solve the lines release liners and receive high-temperature baking because of single face, receive temperature inhomogeneous up and down, filament contraction is inconsistent; And cause texture release liners both sides to be rolled, can't a quantity-produced difficult problem.
Wherein, said polyurethane coating medium uses accurate coating machine evenly to coat on the foam polyvinyl chloride layer less than the coating thickness of 0.2mm, and the base cloth of fitting is then dried under 100～140 ℃ of conditions.
Description of drawings
Shown in Figure 1 is the structural representation of existing P U/PVC synthetic leather.
Shown in Figure 2 is preparation technology's flow chart of existing P U/PVC synthetic leather.
Shown in Figure 3 is the structural representation of PU/PVC synthetic leather of the present invention.
Shown in Figure 4 is preparation technology's flow chart of PU/PVC synthetic leather of the present invention.
The specific embodiment
By specifying technology contents of the present invention, structural feature, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
With reference to shown in Figure 1; PU/PVC synthetic leather of the present invention; Comprise base cloth layer, the bonding layer of polyurethane, foam polyvinyl chloride layer and polyurethane fabric layer, also comprise polyvinyl chloride layer, said polyvinyl chloride layer is between said foam polyvinyl chloride layer and polyurethane fabric layer.
Said polyvinyl chloride layer forms after by the polyvinyl chloride pulp drying, said polyvinyl chloride pulp by PVC paste resin and other auxiliary agents that do not contain blowing agent form.
Said polyvinyl chloride pulp is made up of PVC paste resin, plasticizer, stabilizing agent, filler and polyvinyl chloride color.
The viscosity of said polyvinyl chloride pulp is 2000～5000cps.
With reference to shown in Figure 2, the manufacturing approach of PU/PVC synthetic leather of the present invention may further comprise the steps:
Step 1, material are prepared: select base cloth and lines release liners, preparation polyurethane fabric slurry, foam polyvinyl chloride slurry, polyvinyl chloride pulp and polyurethane coating medium;
Said polyurethane fabric slurry is formulated by following method: using solvent that polyurethane resin is diluted to viscosity is 500～2000cps, adds the polyurethane colorant then, is stirred well to dissolving fully.Said solvent can be selected dimethyl formamide (DMF), butanone (MEK) etc.
Said foam polyvinyl chloride slurry is formulated by following method: using plasticizer that PVC paste resin is diluted to viscosity is 2000～5000cps, adds stabilizing agent, blowing agent, filler and polyvinyl chloride color then, fully stirs.Said plasticizer can be selected dioctyl phthalate (DOP), dibutyl phthalate (DBP) etc.
Said polyvinyl chloride pulp is formulated by following method: using plasticizer that PVC paste resin is diluted to viscosity is 2000～5000cps, adds stabilizing agent, filler and polyvinyl chloride color then, fully stirs.Said plasticizer can be selected dioctyl phthalate (DOP), dibutyl phthalate (DBP) etc.
Step 2, at lines release liners surface-coated polyurethane fabric slurry, oven dry back forms the polyurethane fabric layer;
Said polyurethane fabric slurry uses accurate coating machine evenly to coat on the lines release liners less than the coating thickness of 0.2mm, under 100～140 ℃ of conditions, dries.
Step 3, on the polyurethane fabric layer, apply polyvinyl chloride pulp, the oven dry back forms polyvinyl chloride layer;
Said polyvinyl chloride pulp uses accurate coating machine evenly to coat on the polyurethane fabric layer less than the coating thickness of 0.5mm, under 150～170 ℃ of conditions, dries.
Step 4, on polyvinyl chloride layer, apply the foam polyvinyl chloride slurry, the foaming back forms the foam polyvinyl chloride layer;
Said foam polyvinyl chloride slurry uses accurate coating machine evenly to coat on the polyvinyl chloride layer less than the coating thickness of 0.5mm, places then in the foaming furnace under 180～200 ℃ of conditions, to foam to appointed thickness, and said foaming furnace adopts the top and bottom blowing mode.Because being the above and below from the lines release liners, the top and bottom blowing mode is blown into hot blast simultaneously; Therefore be different from traditional single face blowing mode; Efficiently solve the lines release liners and receive high-temperature baking because of single face, receive temperature inhomogeneous up and down, filament contraction is inconsistent; And cause texture release liners both sides to be rolled, can't a quantity-produced difficult problem.
Step 5, on the foam polyvinyl chloride layer coated with polyurethane coating medium, oven dry forms bonding layer of polyurethane and base cloth layer behind the base cloth of fitting again;
Said polyurethane coating medium uses accurate coating machine evenly to coat on the foam polyvinyl chloride layer less than the coating thickness of 0.2mm, and the base cloth of fitting is then dried under 100～140 ℃ of conditions.
Step 6, removal lines release liners obtain the PU/PVC synthetic leather.
Carry out the wear-resisting test of Martindale to handling the PU/PVC synthetic leather that obtains by above-mentioned steps, testing time can reach more than 100,000 times.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (9)
1. a PU/PVC synthetic leather comprises base cloth layer, the bonding layer of polyurethane, foam polyvinyl chloride layer and polyurethane fabric layer, and it is characterized in that: also comprise polyvinyl chloride layer, said polyvinyl chloride layer is between said foam polyvinyl chloride layer and polyurethane fabric layer.
2. PU/PVC synthetic leather according to claim 1 is characterized in that: said polyvinyl chloride layer forms after by the polyvinyl chloride pulp drying, said polyvinyl chloride pulp by PVC paste resin and other auxiliary agents that do not contain blowing agent form.
3. PU/PVC synthetic leather according to claim 2 is characterized in that: said polyvinyl chloride pulp is made up of PVC paste resin, plasticizer, stabilizing agent, filler and polyvinyl chloride color.
4. PU/PVC synthetic leather according to claim 2 is characterized in that: the viscosity of said polyvinyl chloride pulp is 2000～5000cps.
5. the manufacturing approach of a PU/PVC synthetic leather is characterized in that, may further comprise the steps:
Step 1, material are prepared: select base cloth and lines release liners, preparation polyurethane fabric slurry, foam polyvinyl chloride slurry, polyvinyl chloride pulp and polyurethane coating medium;
Step 2, at lines release liners surface-coated polyurethane fabric slurry, oven dry back forms the polyurethane fabric layer;
Step 3, on the polyurethane fabric layer, apply polyvinyl chloride pulp, the oven dry back forms polyvinyl chloride layer;
Step 4, on polyvinyl chloride layer, apply the foam polyvinyl chloride slurry, the foaming back forms the foam polyvinyl chloride layer;
Step 5, on the foam polyvinyl chloride layer coated with polyurethane coating medium, oven dry forms bonding layer of polyurethane and base cloth layer behind the base cloth of fitting again;
Step 6, removal lines release liners obtain the PU/PVC synthetic leather.
6. the manufacturing approach of PU/PVC synthetic leather according to claim 5; It is characterized in that; Said polyurethane fabric slurry is formulated by following method: using solvent that polyurethane resin is diluted to viscosity is 500～2000cps, adds the polyurethane colorant then, is stirred well to dissolving fully.
7. the manufacturing approach of PU/PVC synthetic leather according to claim 5; It is characterized in that; Said foam polyvinyl chloride slurry is formulated by following method: using plasticizer that PVC paste resin is diluted to viscosity is 2000～5000cps; Add stabilizing agent, blowing agent, filler and polyvinyl chloride color then, fully stir.
8. the manufacturing approach of PU/PVC synthetic leather according to claim 5; It is characterized in that; Said polyvinyl chloride pulp is formulated by following method: using plasticizer that PVC paste resin is diluted to viscosity is 2000～5000cps; Add stabilizing agent, filler and polyvinyl chloride color then, fully stir.
9. the manufacturing approach of PU/PVC synthetic leather according to claim 5 is characterized in that: the foaming process in the said step 4 carries out in foaming furnace, and said foaming furnace adopts the top and bottom blowing mode.
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| CN103643532A (en) * | 2013-11-27 | 2014-03-19 | 福建宝利特集团有限公司 | Water-scrubbing resistant artificial leather and preparation method thereof |
| CN104057672A (en) * | 2014-06-04 | 2014-09-24 | 贝内克-长顺汽车内饰材料（张家港）有限公司 | High-performance polyvinyl chloride automobile interior material with three-dimensional structure |
| CN104195841A (en) * | 2014-09-18 | 2014-12-10 | 福建宝利特集团有限公司 | A kind of soft PU/PVC overlay synthetic leather and preparation method thereof |
| CN104191790A (en) * | 2014-08-20 | 2014-12-10 | 昆山阿基里斯人造皮有限公司 | Coating processing method for polyvinyl chloride artificial leather molded by vacuum plastic suction |
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Address after: 350300 Fuqing City, Fujian Province, Jiangyin Industrial Zone, the holy Road Patentee after: FUJIAN POLYTECH TECHNOLOGY CORP. LTD. Address before: 350300 Fuqing City, Fujian Province, Jiangyin Industrial Zone, the holy Road Patentee before: Fujian Polytech Group Co., Ltd. |