CN102941696A - Thermal compounding polyurethane thin film and preparation method thereof - Google Patents
Thermal compounding polyurethane thin film and preparation method thereof Download PDFInfo
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- CN102941696A CN102941696A CN2012105013070A CN201210501307A CN102941696A CN 102941696 A CN102941696 A CN 102941696A CN 2012105013070 A CN2012105013070 A CN 2012105013070A CN 201210501307 A CN201210501307 A CN 201210501307A CN 102941696 A CN102941696 A CN 102941696A
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Abstract
The invention relates to a thermal compounding composite polyurethane thin film, comprising a hot melt adhesive layer, a thermoplastic polyurethane layer, a solvent coating hot melt adhesive layer and a dry-method polyurethane surface layer which are compounded in sequence from bottom to top, wherein the smelting temperature of the hot melt adhesive layer is lower than the smelting temperatures of the thermoplastic polyurethane layer and the dry-method polyurethane surface layer; and the polyurethane thin film formed by carrying out hot pressing and compounding on various substrates has the advantages that structure is simple, use is convenient, applications are flexible and variable and the like.
Description
Technical field
The present invention relates to a kind of can hot composite polyurethane film and preparation method thereof.
Background technology
Known, synthetic leather all is composited by base material and coating resin, as carrying out the polyurethane wet-process coating at base material or the polyurethane dry method is made face etc., the compound of base material and coating resin all is to finish in the production process of synthetic leather, therefore the selection for base material has certain limitation, and can't replace base material as required and keep coating resin, synthetic leather is at garment material, the footwear material, the fields such as suitcase have widely uses, carry out the compound coating resin film of heat with various base materials in use as providing a kind of, realization connects without sewing, then can greatly reduce a large amount of artificial and time cost that expends because of the sewing machine operation, and optionally not carry out compound coating resin film with various base materials in use in the market.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can carry out compound polyurethane film by hot pressing and various base material, have the advantages such as simple in structure, easy to use, that applying flexible is changeable.
Purpose of the present invention realizes by following technical solution:
A kind of can hot composite polyurethane film, it is characterized in that: comprise the hot melt adhesive layer, solvent coating hot melt adhesive layer and the dry method polyurethane surface layer that are composited successively from the bottom to top, the melt temperature of described hot melt adhesive layer is lower than the melt temperature of solvent coating hot melt adhesive layer and dry method polyurethane surface layer.
Further, described hot melt adhesive layer is thermoplastic polyurethane.
Further, the melt temperature of described hot melt adhesive layer is 70-180 ℃.
Further, the melt temperature of described solvent coating hot melt adhesive layer is not less than the melt temperature of hot melt adhesive layer.
Further, the present invention also comprises the thermoplastic urethane layers that is arranged between hot melt adhesive layer and the solvent coating hot melt adhesive layer.
Further, the melt temperature of described thermoplastic urethane layers is greater than the melt temperature of hot melt adhesive layer, and the melt temperature of described thermoplastic urethane layers is 120-240 ℃.
A kind of can hot composite polyurethane thin film technology method, comprise the steps:
(1), apply dry method polyurethane surface layer in release liners, and oven dry;
(2), carry out the solvent coating hot melt adhesive layer at dry method polyurethane facing surface, and oven dry;
(3), hot melt adhesive layer heat is compounded on the solvent coating hot melt adhesive layer, peel off release liners after the cooling and make polyurethane film.
Further, in step (3), also comprise the step that adopts hot composition process composite thermoplastic layer of polyurethane between hot melt adhesive layer and solvent coating hot melt adhesive layer.
The present invention has following beneficial effect:
In use, hot melt adhesive layer and the base material applying of polyurethane film are positioned in the hot press, get final product by hot press hot pressing is compound, melt temperature owing to hot melt adhesive layer in hot pressing is minimum, when the hot pressing temperature of hot press surpasses the melt temperature of hot melt adhesive layer, PUR just can melt with the adhesive as base material and polyurethane film, thereby polyurethane film is compound with base material securely, here base material can be garment material, the footwear material, suitcase etc., hot pressing is compound makes without the sewing vamp as carrying out with vamp material, can greatly reduce a large amount of artificial and time cost that expends because of the sewing machine operation, be widely used, easy to use.The present invention also can dispense thermoplastic urethane layers as required, to save cost.
Adopt the technique of solvent coating PUR at the solvent coating hot melt adhesive layer of dry method polyurethane surface layer coating as tack coat, can effectively improve the volatilization problem with the rear solvent of dry method polyurethane surface layer applying, because the present invention is that dry method polyurethane surface layer and hot melt adhesive layer+thermoplastic urethane layers are carried out heat is compound, and this layers of material all has been fully dense, airtight, the tack coat solvent is not easy volatilization in common dry process, easily causes defective and production efficiency low; Adopt dry process can greatly enrich lines and the color of hot melt adhesive layer, change common hot melt adhesive layer color and the single drawback of lines.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in further detail.
Fig. 1 is the cutaway view of polyurethane film provided by the invention.
The specific embodiment
With reference to shown in Figure 1, a kind of can hot composite polyurethane film, comprise the hot melt adhesive layer 1, thermoplastic urethane layers 2, solvent coating hot melt adhesive layer 3 and the dry method polyurethane surface layer 4 that are composited successively from the bottom to top.
Hot melt adhesive layer 1 is thermoplastic polyurethane, melt temperature is 120 ℃, the melt temperature of solvent coating hot melt adhesive layer 3, thermoplastic urethane layers 2 and dry method polyurethane surface layer 4 is not less than the melt temperature of hot melt adhesive layer 1, the melt temperature that is specially solvent coating hot melt adhesive layer 3 is 120 ℃, and the melt temperature of thermoplastic urethane layers 2 is 170 ℃.
A kind of can hot composite polyurethane thin film technology method, carry out at the synthetic leather dry process production line, comprise the steps:
(1), applies dry method polyurethane surface layer in release liners, and oven dry, dry method polyurethane surface layer composition of raw materials is by weight: PU resin: mill base: DMF:MEK=100:25:60:20 applies gap 0.17mm, oven dry adopts the temperature of rising progressively to carry out, and concrete bake out temperature is 60 ℃-85 ℃-105 ℃;
(2), carry out the solvent coating hot melt adhesive layer at dry method polyurethane facing surface, and oven dry, solvent coating hot melt adhesive layer composition of raw materials is by weight: PUR: DMF:MEK=100:100:50, apply gap 0.22mm, oven dry adopts the temperature of rising progressively to carry out, and concrete bake out temperature is 65 ℃-85 ℃-115 ℃;
(3), the thermoplastic urethane layers face heat with hot melt adhesive layer+thermoplastic urethane layers is compounded on the solvent coating hot melt adhesive layer, peel off release liners after the cooling and make polyurethane film, 140 ℃ of hot combined temps, pressure 4.5MPa, wherein, hot melt adhesive layer and thermoplastic urethane layers are hot-melt adhesive membrane+thermoplastic polyurethane film of buying on the market, and hot-melt adhesive membrane+thermoplastic polyurethane film has been combined with each other when buying, and can omit in order to save the cost thermoplastic polyurethane film.
The above only is preferred embodiment of the present invention, therefore can not limit scope of the invention process with this, the equivalence of namely doing according to the present patent application claim and description changes and modifies, and all should still belong in the scope that patent of the present invention contains.
Claims (9)
- One kind can hot composite polyurethane film, it is characterized in that: comprise the hot melt adhesive layer, solvent coating hot melt adhesive layer and the dry method polyurethane surface layer that are composited successively from the bottom to top, the melt temperature of described hot melt adhesive layer is lower than the melt temperature of solvent coating hot melt adhesive layer and dry method polyurethane surface layer.
- According to claim 1 a kind of can hot composite polyurethane film, it is characterized in that: described hot melt adhesive layer is thermoplastic polyurethane.
- According to claim 1 a kind of can hot composite polyurethane film, it is characterized in that: the melt temperature of described hot melt adhesive layer is 70-180 ℃.
- According to claim 1 a kind of can hot composite polyurethane film, it is characterized in that: the melt temperature of described solvent coating hot melt adhesive layer is not less than the melt temperature of hot melt adhesive layer.
- According to claim 1 and 2 or 3 or 4 described a kind of can hot composite polyurethane film, it is characterized in that: also comprise the thermoplastic urethane layers that is arranged between hot melt adhesive layer and the solvent coating hot melt adhesive layer.
- According to claim 5 a kind of can hot composite polyurethane film, it is characterized in that: the melt temperature of described thermoplastic urethane layers is greater than the melt temperature of hot melt adhesive layer.
- According to claim 6 a kind of can hot composite polyurethane film, it is characterized in that: the melt temperature of described thermoplastic urethane layers is 120-240 ℃.
- One kind can hot composite polyurethane thin film technology method, comprise the steps:(1), apply dry method polyurethane surface layer in release liners, and oven dry;(2), carry out the solvent coating hot melt adhesive layer at dry method polyurethane facing surface, and oven dry;(3), hot melt adhesive layer heat is compounded on the solvent coating hot melt adhesive layer, peel off release liners after the cooling and make polyurethane film.
- According to claim 8 a kind of can hot composite polyurethane thin film technology method, it is characterized in that: in step (3), also comprise the step that adopts hot composition process composite thermoplastic layer of polyurethane between hot melt adhesive layer and solvent coating hot melt adhesive layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105013070A CN102941696A (en) | 2012-11-29 | 2012-11-29 | Thermal compounding polyurethane thin film and preparation method thereof |
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| CN2012105013070A CN102941696A (en) | 2012-11-29 | 2012-11-29 | Thermal compounding polyurethane thin film and preparation method thereof |
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| CN102941696A true CN102941696A (en) | 2013-02-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112622392A (en) * | 2019-09-20 | 2021-04-09 | 美瑞新材料股份有限公司 | Thermoplastic polyurethane foam product with surface coating and preparation method thereof |
Citations (5)
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|---|---|---|---|---|
| US20040237221A1 (en) * | 2001-12-17 | 2004-12-02 | Rhee Jin Sup | Polyurethane artificial leather and transfer printing method thereof |
| CN101575809A (en) * | 2009-06-01 | 2009-11-11 | 泉州万华世旺超纤有限责任公司 | Superfine fiber mirror crystal leather preparation method |
| CN102029764A (en) * | 2010-09-21 | 2011-04-27 | 东莞市雄林新材料科技有限公司 | Novel TPU (Thermoplastic Polyurethanes) film |
| CN102229272A (en) * | 2011-04-25 | 2011-11-02 | 安安(中国)有限公司 | Production process flow and formula of novel TPU (Thermoplastic Polyurethane) synthetic leather |
| CN202943993U (en) * | 2012-11-29 | 2013-05-22 | 泉州万华世旺超纤有限责任公司 | Thermally compounded polyurethane film |
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- 2012-11-29 CN CN2012105013070A patent/CN102941696A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040237221A1 (en) * | 2001-12-17 | 2004-12-02 | Rhee Jin Sup | Polyurethane artificial leather and transfer printing method thereof |
| CN101575809A (en) * | 2009-06-01 | 2009-11-11 | 泉州万华世旺超纤有限责任公司 | Superfine fiber mirror crystal leather preparation method |
| CN102029764A (en) * | 2010-09-21 | 2011-04-27 | 东莞市雄林新材料科技有限公司 | Novel TPU (Thermoplastic Polyurethanes) film |
| CN102229272A (en) * | 2011-04-25 | 2011-11-02 | 安安(中国)有限公司 | Production process flow and formula of novel TPU (Thermoplastic Polyurethane) synthetic leather |
| CN202943993U (en) * | 2012-11-29 | 2013-05-22 | 泉州万华世旺超纤有限责任公司 | Thermally compounded polyurethane film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112622392A (en) * | 2019-09-20 | 2021-04-09 | 美瑞新材料股份有限公司 | Thermoplastic polyurethane foam product with surface coating and preparation method thereof |
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Application publication date: 20130227 |