CN111154413A - PU film and manufacturing method thereof - Google Patents
PU film and manufacturing method thereof Download PDFInfo
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- CN111154413A CN111154413A CN201811321919.5A CN201811321919A CN111154413A CN 111154413 A CN111154413 A CN 111154413A CN 201811321919 A CN201811321919 A CN 201811321919A CN 111154413 A CN111154413 A CN 111154413A
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- film
- mixed material
- present
- butanone
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Adhesive Tapes (AREA)
Abstract
The invention discloses a PU film and a manufacturing method thereof, comprising a transparent double-sided release film protective layer and a PU film layer; the PU film layer is coated on the transparent double-sided release film protective layer through a coating process; the PU film layer is formed by mixing 2-butanone, polyurethane resin and a curing agent, wherein 75-85 parts of 2-butanone is used; 15-25 parts of polyurethane resin; 0.5-2 parts of curing agent. Has the advantages that: unlike traditional technology, the present invention uses resin, and through extrusion or casting, the present invention has the advantages of low production cost, low cost, etc. the present invention has the adhesive and relevant resin mixed and stirred before coating. The invention has super strong tensile strength and elongation at break.
Description
Technical Field
The invention relates to the field of PU films, in particular to a PU film and a manufacturing method thereof.
Background
The technology is continuously updated and developed, particularly in the IT industry, the requirements of the invention on miniaturization, ultra-thinness, shock resistance and the like are met, and the PU film double-sided adhesive tape not only has the characteristics of excellent sealing performance, good rebound resilience, strong adhesion, good water resistance, good hardness, good toughness and strong weight resistance, but also has the advantages of heat preservation, heat insulation, sound absorption, shock absorption, flame retardance, static electricity prevention, good air permeability and the like, so the PU film double-sided adhesive tape has better application prospects in the fields of household appliances, instruments, automobile industry, battery industry and the like.
However, unlike the conventional process, the present film uses a resin by extrusion or casting, and further, the present film has low tensile strength and small elongation at break.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a PU film and a method for producing the same.
In order to achieve the purpose, the invention provides the following technical scheme:
a PU film comprises a transparent double-sided release film protective layer and a PU thin film layer; the PU film layer is coated on the transparent double-sided release film protective layer through a coating process; the PU film layer is formed by mixing 2-butanone, polyurethane resin and a curing agent, wherein 75-85 parts of 2-butanone is used; 15-25 parts of polyurethane resin; 0.5-2 parts of curing agent.
The preparation method of the PU film comprises the following steps:
adding the weighed polyurethane resin into 2-butanone, and fully and uniformly stirring for 20-40min to obtain a first mixed material;
filtering the first mixed material by using a filter screen with 250-350 meshes;
adding weighed DX-75A curing agent into the weighed first mixed material, and stirring for 30min
Then obtaining a second mixed material for later use;
filtering the second mixed material by using a filter screen with 250-350 meshes;
and pumping the second mixed material into a coating machine after the second mixed material is vacuumized by a diaphragm pump, coating a transparent double-sided release film protective layer, drying and rolling to obtain the PU film.
Has the advantages that: unlike traditional technology, the present invention uses resin, and through extrusion or casting, the present invention has the advantages of low production cost, low cost, etc. the present invention has the adhesive and relevant resin mixed and stirred before coating.
The invention has super strong tensile strength and elongation at break.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a structural view of a PU film according to the present invention.
The reference numerals are explained below:
1. a transparent double-sided release film protective layer; 2. and a PU film layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
See fig. 1 for a
The first embodiment is as follows:
a PU film comprises a transparent double-sided release film protective layer 1 and a PU thin film layer 2; the PU film layer 2 is coated on the transparent double-sided release film protective layer 1 through a coating process; the PU film layer 2 is formed by mixing 2-butanone, polyurethane resin and a curing agent, wherein 80 parts of 2-butanone is used; 19 parts of polyurethane resin; the curing agent is 1 part.
The preparation method of the PU film comprises the following steps:
adding the weighed polyurethane resin into 2-butanone, and fully and uniformly stirring for 20-40min to obtain a first mixed material;
filtering the first mixed material by using a filter screen with 250-350 meshes;
adding a weighed DX-75A curing agent into the weighed first mixed material, and stirring for 30min to obtain a second mixed material for later use;
filtering the second mixed material by using a filter screen with 250-350 meshes;
and pumping the second mixed material into a coating machine to coat a transparent double-sided release film protective layer 1 after the second mixed material is vacuumized by a diaphragm pump, and rolling after drying to obtain the PU film.
Example two:
a PU film comprises a transparent double-sided release film protective layer 1 and a PU thin film layer 2; the PU film layer 2 is coated on the transparent double-sided release film protective layer 1 through a coating process; the PU film layer 2 is formed by mixing 2-butanone, polyurethane resin and a curing agent, wherein 85 parts of 2-butanone is used; 14.5 parts of polyurethane resin; the curing agent is 0.5 part.
The preparation method of the PU film comprises the following steps:
adding the weighed polyurethane resin into 2-butanone, and fully and uniformly stirring for 20-40min to obtain a first mixed material;
filtering the first mixed material by using a filter screen with 250-350 meshes;
adding a weighed DX-75A curing agent into the weighed first mixed material, and stirring for 30min to obtain a second mixed material for later use;
filtering the second mixed material by using a filter screen with 250-350 meshes;
and pumping the second mixed material into a coating machine to coat a transparent double-sided release film protective layer 1 after the second mixed material is vacuumized by a diaphragm pump, and rolling after drying to obtain the PU film.
Has the advantages that: unlike traditional technology, the present invention uses resin, and through extrusion or casting, the present invention has the advantages of low production cost, low cost, etc. the present invention has the adhesive and relevant resin mixed and stirred before coating.
The invention has super strong tensile strength and elongation at break.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (2)
1. A PU film, characterized by: comprises a transparent double-sided release film protective layer and a PU thin film layer; the PU film layer is coated on the transparent double-sided release film protective layer through a coating process; the PU film layer is formed by mixing 2-butanone, polyurethane resin and a curing agent, wherein 75-85 parts of 2-butanone is used; 15-25 parts of polyurethane resin; 0.5-2 parts of curing agent.
2. The method for producing a PU film according to claim 1, comprising the steps of:
1) adding the weighed polyurethane resin into 2-butanone, and fully and uniformly stirring for 20-40min to obtain a first mixed material;
2) filtering the first mixed material by using a filter screen with 250-350 meshes;
3) adding a weighed DX-75A curing agent into the weighed first mixed material, and stirring for 30min to obtain a second mixed material for later use;
4) filtering the second mixed material by using a filter screen with 250-350 meshes;
5) and pumping the second mixed material into a coating machine after the second mixed material is vacuumized by a diaphragm pump, coating a transparent double-sided release film protective layer, drying and rolling to obtain the PU film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811321919.5A CN111154413A (en) | 2018-11-08 | 2018-11-08 | PU film and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811321919.5A CN111154413A (en) | 2018-11-08 | 2018-11-08 | PU film and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111154413A true CN111154413A (en) | 2020-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811321919.5A Pending CN111154413A (en) | 2018-11-08 | 2018-11-08 | PU film and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN111154413A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969238A (en) * | 2016-06-29 | 2016-09-28 | 东莞市航达电子有限公司 | PET (polyethylene terephthalate) antistatic release film |
| WO2018182289A2 (en) * | 2017-03-27 | 2018-10-04 | 주식회사 엘지화학 | Thermoplastic polyurethane film and preparation method therefor |
| CN108641614A (en) * | 2018-04-19 | 2018-10-12 | 广东东立新材料科技股份有限公司 | A kind of touch screen protective film and preparation method thereof of low-surface-energy variation |
-
2018
- 2018-11-08 CN CN201811321919.5A patent/CN111154413A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969238A (en) * | 2016-06-29 | 2016-09-28 | 东莞市航达电子有限公司 | PET (polyethylene terephthalate) antistatic release film |
| WO2018182289A2 (en) * | 2017-03-27 | 2018-10-04 | 주식회사 엘지화학 | Thermoplastic polyurethane film and preparation method therefor |
| CN108641614A (en) * | 2018-04-19 | 2018-10-12 | 广东东立新材料科技股份有限公司 | A kind of touch screen protective film and preparation method thereof of low-surface-energy variation |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200515 |