CN114311463A - Solvent-free synthetic leather and manufacturing method thereof - Google Patents
Solvent-free synthetic leather and manufacturing method thereof Download PDFInfo
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- CN114311463A CN114311463A CN202111610075.8A CN202111610075A CN114311463A CN 114311463 A CN114311463 A CN 114311463A CN 202111610075 A CN202111610075 A CN 202111610075A CN 114311463 A CN114311463 A CN 114311463A
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- synthetic leather
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- leather
- free synthetic
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- 239000002649 leather substitute Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 63
- 239000010985 leather Substances 0.000 claims abstract description 31
- 238000005507 spraying Methods 0.000 claims abstract description 30
- 238000005520 cutting process Methods 0.000 claims abstract description 24
- 238000000576 coating method Methods 0.000 claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 238000009966 trimming Methods 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 229920002635 polyurethane Polymers 0.000 claims abstract description 8
- 239000004814 polyurethane Substances 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000007822 coupling agent Substances 0.000 claims description 10
- 238000005057 refrigeration Methods 0.000 claims description 10
- 239000002562 thickening agent Substances 0.000 claims description 10
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- 239000004088 foaming agent Substances 0.000 claims description 5
- 229910010272 inorganic material Inorganic materials 0.000 claims description 5
- 239000011147 inorganic material Substances 0.000 claims description 5
- 239000011344 liquid material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 239000000654 additive Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a solvent-free synthetic leather and a manufacturing method thereof, comprising the following steps: p1, selecting materials as basic raw materials, and weighing for later use; p2, preparing the basic raw materials according to the mass percentage; p3, mixing at normal temperature to obtain a mixed material; p4, forming a spraying material; p5, forming a carrying paper; p6, forming a first coating; p7, obtaining a leather blank; p8, winding and rolling by using a winding machine, and curling the release paper and the leather blank together to form a material roll; p9, winding release paper and leather blank respectively; p10, trimming and cutting the leather blank, untwisting to finish the preparation of the synthetic leather, adopting solvent-free polyurethane as a basic raw material, matching with various additives to form a mixed material, separating by different shrinkage rates of the synthetic leather and release paper, being more thorough, beneficial to operation, avoiding residual interference, trimming and cutting at last to finish the preparation, being beneficial to control operation, ensuring product quality and being beneficial to popularization and use.
Description
Technical Field
The invention relates to the technical field of synthetic leather, in particular to solvent-free synthetic leather and a manufacturing method thereof.
Background
In present daily life and production, the use of synthetic leather is more and more common, and wherein solvent-free synthetic leather does not need organic solvent to dissolve and react during manufacturing, and the waste material that produces is less, and safety ring protects nature is high, and it is comparatively common to use.
However, in the existing solvent-free synthetic leather methods, materials are mostly directly mixed and then are calendered to form leather, which is not only unfavorable for accurately controlling the thickness of the leather and causing poor uniformity, poor compactness when the thickness is large, but also unfavorable for forming and unable to be rapidly formed when the thickness is small, and some methods adopting carrier support forming are not favorable for rapid control processing and are also unfavorable for separation from the carrier and cause poor surface quality and are unfavorable for control processing, and a new method needs to be provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides solvent-free synthetic leather and a manufacturing method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the solvent-free synthetic leather and the manufacturing method thereof comprise the following steps:
p1, selecting materials as basic raw materials, and weighing for later use;
p2, preparing the basic raw materials according to the mass percentage, including 60% -80% of solvent-free polyurethane, 4% -9% of foaming agent, 3% -8% of coupling agent, 6% -15% of color paste, 5% -10% of flatting agent and 8% -16% of thickening agent;
p3, mixing the selected materials, putting the mixture into a mixer, and mixing at normal temperature to obtain a mixed material;
p4, putting the mixed material into a spraying machine for treatment to form a spraying material;
p5, selecting a release paper roll as a carrier, and unfolding the release paper roll through an unreeling machine to form carrying paper;
p6, spraying the spraying material on the carrier paper to form a coating, and flattening by a first flattening roller to form a first coating;
p7, continuously spraying on the second coating, and flattening by a second flattening roller to form a second coating, so as to obtain a leather blank;
p8, winding and rolling by using a winding machine, and curling the release paper and the leather blank together to form a material roll;
p9, placing the material roll into a refrigeration house, adjusting the refrigeration temperature to carry out cooling separation, taking out the material roll, separating the material roll through a separator, and respectively winding release paper and leather blanks;
and P10, trimming and cutting the leather blank, and untwisting to finish the preparation of the synthetic leather.
Preferably, the coupling agent in the P2 is a silane coupling agent, the color paste is water-soluble color paste, the leveling agent is Silok-8450, and the thickening agent is an inorganic material.
Preferably, the spray coater treatment in P4 comprises crushing and mixing the materials to form a liquid material.
Preferably, the unwinding width of the unwinding machine in the P5 is 1.5-1.8 m, and the unwinding speed is 50-60 cm/s.
Preferably, the first leveling roller and the second leveling roller of the P6 and P7 are a double-row roller structure, and the gap of the second leveling roller is twice the gap of the first leveling roller.
Preferably, the first leveling roller and the second leveling roller of the P6 and P7 are arranged at an interval of 2 m to 2.5 m and at a predetermined level.
Preferably, the roll in P8 is a double-layer roll, and the diameter of the roll is 2.5-2.6 m.
Preferably, the cooling separation temperature in the P9 is-6 to-3 ℃, the separation is realized by different shrinkage rates, and the cooling time is 30 to 50 minutes.
Preferably, the trimming and cutting manner of the P10 is to cut and trim the two side edges of the leather blank by a cutting machine, and the cutting width is 2 cm to 3 cm.
According to the solvent-free synthetic leather and the manufacturing method thereof, the solvent-free polyurethane is used as a base raw material, a mixed material is formed by matching with a plurality of additives, the structural stability and the environmental protection safety of the synthetic leather can be ensured, the release paper roll is unfolded through an unreeling machine, the high-speed transmission processing can be realized, after coatings are formed by spraying on two sides, the machine types are respectively just flat and pressed, the surface smoothness is ensured, the uniformity is improved, the product quality is effectively improved, finally, the separation is carried out through the different shrinkage rates of the synthetic leather and the release paper by freezing separation, the operation is more thorough, the residual interference is avoided, the preparation is completed by trimming and cutting, the control operation is facilitated, the processing production is convenient, the product quality is ensured, and the popularization and the use are facilitated.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The solvent-free synthetic leather and the manufacturing method thereof comprise the following steps:
p1, selecting materials as basic raw materials, and weighing for later use;
p2, preparing the basic raw materials according to the mass percentage, including 60% -80% of solvent-free polyurethane, 4% -9% of foaming agent, 3% -8% of coupling agent, 6% -15% of color paste, 5% -10% of flatting agent and 8% -16% of thickening agent;
p3, mixing the selected materials, putting the mixture into a mixer, and mixing at normal temperature to obtain a mixed material;
p4, putting the mixed material into a spraying machine for treatment to form a spraying material;
p5, selecting a release paper roll as a carrier, and unfolding the release paper roll through an unreeling machine to form carrying paper;
p6, spraying the spraying material on the carrier paper to form a coating, and flattening by a first flattening roller to form a first coating;
p7, continuously spraying on the second coating, and flattening by a second flattening roller to form a second coating, so as to obtain a leather blank;
p8, winding and rolling by using a winding machine, and curling the release paper and the leather blank together to form a material roll;
p9, placing the material roll into a refrigeration house, adjusting the refrigeration temperature to carry out cooling separation, taking out the material roll, separating the material roll through a separator, and respectively winding release paper and leather blanks;
and P10, trimming and cutting the leather blank, and untwisting to finish the preparation of the synthetic leather.
Preferably, the coupling agent in the P2 is a silane coupling agent, the color paste is water-soluble color paste, the leveling agent is Silok-8450, and the thickening agent is an inorganic material.
Preferably, the spray coating treatment in P4 comprises crushing and stirring the materials to form a liquid material.
Preferably, the width of the unwinding machine in the P5 is 1.5 to 1.8 meters, and the unwinding speed is 50 to 60 centimeters per second.
Preferably, the first leveling roller and the second leveling roller of the P6 and P7 are a double-row roller structure, and the gap of the second leveling roller is twice the gap of the first leveling roller.
Preferably, the first leveling roll and the second leveling roll of the P6 and P7 are arranged at an interval of 2 m to 2.5 m and at a predetermined level.
Preferably, the roll in P8 is a double-layer roll, and the diameter of the roll is 2.5-2.6 m.
Preferably, the cooling separation temperature in the P9 is-6 to-3 ℃, the separation is realized by different shrinkage rates, and the cooling time is 30 to 50 minutes.
Preferably, the trimming and cutting manner of P10 is to cut and trim the two side edges of the leather blank by a cutting machine, and the cutting width is 2 cm to 3 cm.
The solvent-free synthetic leather and the manufacturing method thereof provided by the invention adopt solvent-free polyurethane as a basic raw material, form a mixed material by matching with various additives, can ensure the structural stability and environmental protection safety of the synthetic leather, unfold the release paper roll through an unreeling machine, can be transmitted and processed at a high speed, form coatings by combining two sides and then respectively press the machine types normally and flatly, ensure the surface smoothness and simultaneously improve the uniformity, effectively improve the product quality, finally separate the synthetic leather and the release paper by different shrinkage rates through freezing separation, are more thorough, are beneficial to operation, avoid residual interference, finish the preparation by trimming and cutting, are beneficial to control operation, are convenient to process and produce, ensure the product quality and are beneficial to popularization and use.
Example 1
The solvent-free synthetic leather and the manufacturing method thereof comprise the following steps:
p1, selecting materials as basic raw materials, and weighing for later use;
p2, preparing the basic raw materials according to the mass percentage, wherein the basic raw materials comprise 69% of solvent-free polyurethane, 5% of foaming agent, 5% of coupling agent, 7% of color, 8% of leveling agent and 8% of thickening agent;
p3, mixing the selected materials, putting the mixture into a mixer, and mixing at normal temperature to obtain a mixed material;
p4, putting the mixed material into a spraying machine for treatment to form a spraying material;
p5, selecting a release paper roll as a carrier, and unfolding the release paper roll through an unreeling machine to form carrying paper;
p6, spraying the spraying material on the carrier paper to form a coating, and flattening by a first flattening roller to form a first coating;
p7, continuously spraying on the second coating, and flattening by a second flattening roller to form a second coating, so as to obtain a leather blank;
p8, winding and rolling by using a winding machine, and curling the release paper and the leather blank together to form a material roll;
p9, placing the material roll into a refrigeration house, adjusting the refrigeration temperature to carry out cooling separation, taking out the material roll, separating the material roll through a separator, and respectively winding release paper and leather blanks;
and P10, trimming and cutting the leather blank, and untwisting to finish the preparation of the synthetic leather.
Preferably, the coupling agent in the P2 is a silane coupling agent, the color paste is water-soluble color paste, the leveling agent is Silok-8450, and the thickening agent is an inorganic material.
Preferably, the spray coating treatment in P4 comprises crushing and stirring the materials to form a liquid material.
Preferably, the width of the unwinding machine in the P5 is 1.5 to 1.8 meters, and the unwinding speed is 50 to 60 centimeters per second.
Preferably, the first leveling roller and the second leveling roller of the P6 and P7 are a double-row roller structure, and the gap of the second leveling roller is twice the gap of the first leveling roller.
Preferably, the first leveling roll and the second leveling roll of the P6 and P7 are arranged at an interval of 2 m to 2.5 m and at a predetermined level.
Preferably, the roll in P8 is a double-layer roll, and the diameter of the roll is 2.5-2.6 m.
Preferably, the cooling separation temperature in the P9 is-6 to-3 ℃, the separation is realized by different shrinkage rates, and the cooling time is 30 to 50 minutes.
Preferably, the trimming and cutting manner of P10 is to cut and trim the two side edges of the leather blank by a cutting machine, and the cutting width is 2 cm to 3 cm.
Example 2
The solvent-free synthetic leather and the manufacturing method thereof comprise the following steps:
p1, selecting materials as basic raw materials, and weighing for later use;
p2, preparing the basic raw materials according to the mass percentage, wherein the basic raw materials comprise 72% of solvent-free polyurethane, 4% of foaming agent, 3% of coupling agent, 6% of color paste, 5% of flatting agent and 10% of thickening agent;
p3, mixing the selected materials, putting the mixture into a mixer, and mixing at normal temperature to obtain a mixed material;
p4, putting the mixed material into a spraying machine for treatment to form a spraying material;
p5, selecting a release paper roll as a carrier, and unfolding the release paper roll through an unreeling machine to form carrying paper;
p6, spraying the spraying material on the carrier paper to form a coating, and flattening by a first flattening roller to form a first coating;
p7, continuously spraying on the second coating, and flattening by a second flattening roller to form a second coating, so as to obtain a leather blank;
p8, winding and rolling by using a winding machine, and curling the release paper and the leather blank together to form a material roll;
p9, placing the material roll into a refrigeration house, adjusting the refrigeration temperature to carry out cooling separation, taking out the material roll, separating the material roll through a separator, and respectively winding release paper and leather blanks;
and P10, trimming and cutting the leather blank, and untwisting to finish the preparation of the synthetic leather.
Preferably, the coupling agent in the P2 is a silane coupling agent, the color paste is water-soluble color paste, the leveling agent is Silok-8450, and the thickening agent is an inorganic material.
Preferably, the spray coating treatment in P4 comprises crushing and stirring the materials to form a liquid material.
Preferably, the width of the unwinding machine in the P5 is 1.5 to 1.8 meters, and the unwinding speed is 50 to 60 centimeters per second.
Preferably, the first leveling roller and the second leveling roller of the P6 and P7 are a double-row roller structure, and the gap of the second leveling roller is twice the gap of the first leveling roller.
Preferably, the first leveling roll and the second leveling roll of the P6 and P7 are arranged at an interval of 2 m to 2.5 m and at a predetermined level.
Preferably, the roll in P8 is a double-layer roll, and the diameter of the roll is 2.5-2.6 m.
Preferably, the cooling separation temperature in the P9 is-6 to-3 ℃, the separation is realized by different shrinkage rates, and the cooling time is 30 to 50 minutes.
Preferably, the trimming and cutting manner of P10 is to cut and trim the two side edges of the leather blank by a cutting machine, and the cutting width is 2 cm to 3 cm.
Claims (9)
1. A solvent-free synthetic leather and a manufacturing method thereof are characterized in that: the solvent-free synthetic leather and the manufacturing method thereof comprise the following steps:
p1, selecting materials as basic raw materials, and weighing for later use;
p2, preparing the basic raw materials according to the mass percentage, including 60% -80% of solvent-free polyurethane, 4% -9% of foaming agent, 3% -8% of coupling agent, 6% -15% of color paste, 5% -10% of flatting agent and 8% -16% of thickening agent;
p3, mixing the selected materials, putting the mixture into a mixer, and mixing at normal temperature to obtain a mixed material;
p4, putting the mixed material into a spraying machine for treatment to form a spraying material;
p5, selecting a release paper roll as a carrier, and unfolding the release paper roll through an unreeling machine to form carrying paper;
p6, spraying the spraying material on the carrier paper to form a coating, and flattening by a first flattening roller to form a first coating;
p7, continuously spraying on the second coating, and flattening by a second flattening roller to form a second coating, so as to obtain a leather blank;
p8, winding and rolling by using a winding machine, and curling the release paper and the leather blank together to form a material roll;
p9, placing the material roll into a refrigeration house, adjusting the refrigeration temperature to carry out cooling separation, taking out the material roll, separating the material roll through a separator, and respectively winding release paper and leather blanks;
and P10, trimming and cutting the leather blank, and untwisting to finish the preparation of the synthetic leather.
2. A solvent-free synthetic leather and method of making the same according to claim 1, wherein: the P2 comprises a silane coupling agent as a coupling agent, water-soluble color paste as a color paste, a Silok-8450 as a leveling agent and an inorganic material as a thickening agent.
3. A solvent-free synthetic leather and method of making the same according to claim 1, wherein: the spray coater treatment in the P4 method comprises the steps of crushing and stirring and mixing materials to form liquid materials.
4. A solvent-free synthetic leather and method of making the same according to claim 1, wherein: the unwinding width of the unwinding machine in the P5 is 1.5-1.8 m, and the unwinding speed is 50-60 cm/s.
5. A solvent-free synthetic leather and method of making the same according to claim 1, wherein: the first and second leveling rolls of the P6 and P7 are double row roll arrangements and the gap of the second leveling roll is twice the gap of the first leveling roll.
6. A solvent-free synthetic leather and method of making the same according to claim 1, wherein: the first leveling roller and the second leveling roller of the P6 and P7 are arranged at an interval of 2 m to 2.5 m and at a uniform level.
7. A solvent-free synthetic leather and method of making the same according to claim 1, wherein: the rolls in P8 were double layer rolls with a roll diameter of 2.5 to 2.6 meters.
8. A solvent-free synthetic leather and method of making the same according to claim 1, wherein: the cooling separation temperature in the P9 is-6 ℃ to-3 ℃, the separation is realized by different shrinkage rates, and the cooling time is 30 minutes to 50 minutes.
9. A solvent-free synthetic leather and method of making the same according to claim 1, wherein: the trimming and cutting mode of the P10 is to trim and edge the edges of two sides of the leather blank by a cutting machine, and the cutting width is 2 cm to 3 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111610075.8A CN114311463A (en) | 2021-12-27 | 2021-12-27 | Solvent-free synthetic leather and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111610075.8A CN114311463A (en) | 2021-12-27 | 2021-12-27 | Solvent-free synthetic leather and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN114311463A true CN114311463A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111610075.8A Pending CN114311463A (en) | 2021-12-27 | 2021-12-27 | Solvent-free synthetic leather and manufacturing method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040077826A (en) * | 2004-07-26 | 2004-09-07 | 세다코오퍼레이숀 주식회사 | method of making polyurethane synthetic leather |
| CN102758360A (en) * | 2012-07-06 | 2012-10-31 | 河南永合塑胶有限公司 | Polyurethane synthetic leather cleaning production process based on release paper transfer coating method |
| CN203440692U (en) * | 2013-08-13 | 2014-02-19 | 浙江拓空实业有限公司 | Casting bi-component polyurethane synthetic leather production line |
| CN103774456A (en) * | 2014-01-20 | 2014-05-07 | 浙江闽锋化学有限公司 | Dry method-based waterborne polyurethane resin producing process |
| CN203945777U (en) * | 2014-07-09 | 2014-11-19 | 湖南欧亚碳纤维复合材料有限公司 | Paster film refrigerated separation device |
| CN106113859A (en) * | 2016-06-24 | 2016-11-16 | 江苏国信复合材料科技股份有限公司 | A kind of no-solvent polyurethane luggage leather and preparation method thereof |
| CN110153091A (en) * | 2019-05-16 | 2019-08-23 | 深圳大视野志远科技有限公司 | A kind of touch screen method for cleaning |
-
2021
- 2021-12-27 CN CN202111610075.8A patent/CN114311463A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040077826A (en) * | 2004-07-26 | 2004-09-07 | 세다코오퍼레이숀 주식회사 | method of making polyurethane synthetic leather |
| CN102758360A (en) * | 2012-07-06 | 2012-10-31 | 河南永合塑胶有限公司 | Polyurethane synthetic leather cleaning production process based on release paper transfer coating method |
| CN203440692U (en) * | 2013-08-13 | 2014-02-19 | 浙江拓空实业有限公司 | Casting bi-component polyurethane synthetic leather production line |
| CN103774456A (en) * | 2014-01-20 | 2014-05-07 | 浙江闽锋化学有限公司 | Dry method-based waterborne polyurethane resin producing process |
| CN203945777U (en) * | 2014-07-09 | 2014-11-19 | 湖南欧亚碳纤维复合材料有限公司 | Paster film refrigerated separation device |
| CN106113859A (en) * | 2016-06-24 | 2016-11-16 | 江苏国信复合材料科技股份有限公司 | A kind of no-solvent polyurethane luggage leather and preparation method thereof |
| CN110153091A (en) * | 2019-05-16 | 2019-08-23 | 深圳大视野志远科技有限公司 | A kind of touch screen method for cleaning |
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