CN213733898U

CN213733898U - High-temperature-resistant release film special for FPC hot pressing

Info

Publication number: CN213733898U
Application number: CN202021309622.XU
Authority: CN
Inventors: 丁乔清
Original assignee: Kunshan Jorwe New Material Co ltd
Current assignee: Kunshan Jorwe New Material Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-07-20
Anticipated expiration: 2030-07-07

Abstract

The utility model discloses a special high temperature resistant type membrane of releasing of FPC hot pressing, including the biaxial stretching polypropylene film, the lower extreme external surface fixed connection BOPET film of biaxial stretching polypropylene film, the upper end external surface fixed connection of biaxial stretching polypropylene film has the polyethylene material, the upper end external surface fixed connection of polyethylene material is special from type stable material, special upper end external surface fixed connection that stabilizes the material from type is connected with the ya keli and glues, the upper end surface that the ya keli was glued is provided with special polyester film. Special high temperature resistant type membrane of leaving of FPC hot pressing, solve current PET and leave the phenomenon that the type membrane can not resist high temperature, adopt special polyester film to coat, high temperature resistant nature is strong, and on being exclusively used in FPC flexible line way board, no crack, no bubble and impurity such as no granule, no silicon oil is appeared under high temperature, brings better use prospect in the use.

Description

High-temperature-resistant release film special for FPC hot pressing

Technical Field

The utility model relates to a from type membrane technical field, specifically be special high temperature resistant type membrane of FPC hot pressing.

Background

With the rapid development of printed circuit boards, FPC flexible printed circuit boards, electronic and electrical products, printing and packaging, pharmacy and display die cutting industries, the demand for high temperature resistant release films will increase continuously. The release film used for FPC flexible circuit board, printing package, display die cutting and the like has stronger and stronger high temperature resistance, the release film required to be used has stronger and stronger temperature resistance, the common release film has the temperature resistance generally below 150 ℃, the release film is easy to have phenomena of ring seal, wrinkle, shrinkage and the like at the temperature above 150 ℃, the performances of some electronic products are seriously influenced, the main idea of developing the high temperature resistant release film is to use special film materials for production on the basis of not influencing the release performance and the release effect of the release film, the problem of the performance of the release film which is not high temperature resistant is solved, the release film has poor stability, silicone oil can be separated out sometimes, certain adverse effects are brought to the use process of people, and therefore, the high temperature resistant release film special for FPC hot pressing is provided.

SUMMERY OF THE UTILITY MODEL

Solves the technical problem

Not enough to prior art, the utility model provides a special high temperature resistant type membrane of FPC hot pressing solves current PET and from the phenomenon that the type membrane is not high temperature resistant, adopts special polyester film to coat, and high temperature resistant nature is strong, and is exclusively used in on the FPC flexible line way board, and no crackle, no bubble and impurity such as no granule are appeared at high temperature-free silicon oil, can effectively solve the problem in the background art.

Technical scheme

In order to achieve the above purpose, the utility model adopts the following technical scheme: high temperature resistant release film special for FPC hot pressing, including the biaxially oriented polypropylene film, the lower extreme outer fixed surface of biaxially oriented polypropylene film is connected with BOPET film, the upper end outer fixed surface of biaxially oriented polypropylene film is connected with the polyethylene material, the upper end outer fixed surface of polyethylene material is connected with special release stable material, special release stable material's upper end outer fixed surface is connected with acrylic glue, the upper end surface that acrylic glue is provided with special polyester film.

Further, the special polyester film comprises polyethylene terephthalate, polyamide-imide, polyphenylene sulfide and polytetrafluoroethylene, wherein the polyethylene terephthalate is located on the outer surface of the upper end of the polyamide-imide, the polyamide-imide is located on the outer surface of the upper end of the polyphenylene sulfide, and the polyphenylene sulfide is located on the outer surface of the upper end of the polytetrafluoroethylene.

Further, the outer surface of the lower end of the polyethylene terephthalate is fixedly connected with the outer surface of the upper end of the polyamide imide through silica gel, the outer surface of the lower end of the polyamide imide is fixedly connected with the outer surface of the upper end of the polyphenylene sulfide through silica gel, and the outer surface of the lower end of the polyphenylene sulfide is fixedly connected with the outer surface of the upper end of the polytetrafluoroethylene through silica gel.

Furthermore, the special release stabilizing material comprises a silicone powder layer, a silica gel adhesive, a silicon-proof oil film, a polyamide adhesive and an anti-static layer, wherein the silicone powder layer is located on the outer surface of the upper end of the silica gel adhesive, the silica gel adhesive is located on the outer surface of the upper end of the silicon-proof oil film, the silicon-proof oil film is located on the outer surface of the upper end of the polyamide adhesive, and the polyamide adhesive is located on the outer surface of the upper end of the anti-static layer.

Further, the outer surface of the lower end of the silicone powder layer is fixedly connected with the outer surface of the upper end of the silicone adhesive, the outer surface of the lower end of the silicone adhesive is fixedly connected with the outer surface of the upper end of the silicon-proof oil film, the outer surface of the lower end of the silicon-proof oil film is fixedly connected with the outer surface of the upper end of the polyamide adhesive, and the outer surface of the lower end of the polyamide adhesive is fixedly connected with the outer surface of the upper end of the antistatic layer.

The utility model has the advantages that: the high-temperature-resistant release film special for FPC hot pressing can solve the problem that the existing PET release film is not high-temperature-resistant, is coated by adopting a special polyester film, is high in high-temperature resistance, is special for FPC flexible circuit boards, is free of impurities such as cracks, bubbles and particles, and is free of silicone oil precipitation at high temperature.

Drawings

Fig. 1 is the utility model discloses the special high temperature resistant overall structure sketch map from the type membrane of FPC hot pressing.

Fig. 2 is the side view of the special polyester film of the special high temperature resistant release film for FPC hot pressing.

Fig. 3 is the utility model discloses the special high temperature resistant type membrane of releasing of FPC hot pressing looks sideways at the profile chart from the stable material of type.

In the figure: 1. special polyester films; 2. acrylic glue; 3. special release stable material; 4. a polyethylene material; 5. biaxially oriented polypropylene film; 6. a BOPET film; 101. polyethylene terephthalate; 102. a polyamide-imide; 103. polyphenylene sulfide; 104. polytetrafluoroethylene; 301. a silicone powder layer; 302. silica gel adhesive; 303. a silicon-proof oil film;

304. polyamide adhesive; 305. and an antistatic layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-2, the special high temperature resistant release film for FPC hot pressing comprises a biaxially oriented polypropylene film 5, the lower end outer fixed surface of the biaxially oriented polypropylene film 5 is connected with a BOPET film 6, the upper end outer fixed surface of the biaxially oriented polypropylene film 5 is connected with a polyethylene material 4, the upper end outer fixed surface of the polyethylene material 4 is specially connected with a release stabilizing material 3, the special upper end outer fixed surface of the release stabilizing material 3 is connected with an acrylic adhesive 2, and the upper end outer surface of the acrylic adhesive 2 is provided with a special polyester film 1.

The acrylic adhesive 2 is an important plastic high polymer material which is developed earlier, has better transparency, chemical stability and weather resistance, is easy to dye, is easy to process and has beautiful appearance, the polyethylene material 4 is thermoplastic resin prepared by polymerizing ethylene, and industrially also comprises a copolymer of ethylene and a small amount of alpha-olefin, the polyethylene material 4 is odorless, nontoxic, has similar hand feeling to wax, has excellent low temperature resistance and good chemical stability, can resist the corrosion of most acid and alkali (cannot resist acid with oxidation property), is insoluble in common solvents at normal temperature, has small water absorption and excellent electrical insulation, is transparent and is reduced along with the improvement of crystallinity, has low water permeability but larger air permeability, the two-way stretching polypropylene film 5 is generally a multi-layer co-extrusion film, and is formed by co-extruding polypropylene particles into a sheet, the BOPET film 6 is a biaxially oriented polyester film, and the BOPET film 6 has the characteristics of high strength, good rigidity, transparency, high glossiness and the like; no smell, no color, no toxicity, and outstanding toughness.

The special polyester film 1 comprises polyethylene terephthalate 101, polyamide-imide 102, polyphenylene sulfide 103 and polytetrafluoroethylene 104, wherein the polyethylene terephthalate 101 is positioned on the outer surface of the upper end of the polyamide-imide 102, the polyamide-imide 102 is positioned on the outer surface of the upper end of the polyphenylene sulfide 103, and the polyphenylene sulfide 103 is positioned on the outer surface of the upper end of the polytetrafluoroethylene 104.

The polyethylene terephthalate 101 is prepared by exchanging dimethyl terephthalate with ethylene glycol or esterifying terephthalic acid with ethylene glycol to synthesize dihydroxyethyl terephthalate, and then performing polycondensation reaction, belongs to crystalline saturated polyester, is a milky or light yellow highly crystalline polymer, has smooth and glossy surface, is a common resin in life, has a long-term use temperature of 120 ℃, has excellent electrical insulation property, and even has good electrical property under high temperature and high frequency, but has poor corona resistance, creep resistance, fatigue resistance, friction resistance and dimensional stability, and the polyamideimide 102 has physicochemical properties: the polyphenylene sulfide 103 is a novel high-performance thermoplastic resin, has the advantages of high mechanical strength, high temperature resistance, chemical drug resistance, flame retardancy, good thermal stability, excellent electrical property and the like, the polytetrafluoroethylene 104 is a polymer prepared by polymerizing tetrafluoroethylene as a monomer, is white waxy, semitransparent, heat-resistant and cold-resistant, can be used at the temperature of minus 180-260 ℃ for a long time, has the characteristics of acid and alkali resistance and various organic solvents resistance, is almost insoluble in all solvents, and meanwhile, the polytetrafluoroethylene 104 has the characteristic of high temperature resistance and extremely low friction coefficient.

The outer surface of the lower end of the polyethylene terephthalate 101 is fixedly connected with the outer surface of the upper end of the polyamide imide 102 through silica gel, the outer surface of the lower end of the polyamide imide 102 is fixedly connected with the outer surface of the upper end of the polyphenylene sulfide 103 through silica gel, and the outer surface of the lower end of the polyphenylene sulfide 103 is fixedly connected with the outer surface of the upper end of the polytetrafluoroethylene 104 through silica gel.

Example 2

As shown in fig. 1 and 3, the special release stabilizing material 3 includes a silicone powder layer 301, a silicone adhesive 302, a silicon-proof oil film 303, a polyamide adhesive 304 and an antistatic layer 305, the silicone powder layer 301 is located on the outer surface of the upper end of the silicone adhesive 302, the silicone adhesive 302 is located on the outer surface of the upper end of the silicon-proof oil film 303, the silicon-proof oil film 303 is located on the outer surface of the upper end of the polyamide adhesive 304, and the polyamide adhesive 304 is located on the outer surface of the upper end of the antistatic layer 305.

The silicone powder layer 301 is a polymer of organic silicon oxide, is a series of polydimethylsiloxanes with different molecular weights, has viscosity increasing with the increase of the molecular weight, stable chemical properties, strong hydrophobicity, is insoluble in water, is soluble in nonpolar solvents such as gasoline, toluene and the like, the silicone adhesive 302 is a special adhesive and is formed by mixing high-molecular-weight linear polysiloxane, filler and other additives, the silicone-resistant oil film 303 is a material capable of preventing the precipitation of silicone oil, the polyamide adhesive 304 is a special adhesive, and the antistatic layer 305 is an antistatic coating and can effectively prevent and control static electricity.

The outer surface of the lower end of the silicone powder layer 301 is fixedly connected with the outer surface of the upper end of the silicone adhesive 302, the outer surface of the lower end of the silicone adhesive 302 is fixedly connected with the outer surface of the upper end of the silicon-proof oil film 303, the outer surface of the lower end of the silicon-proof oil film 303 is fixedly connected with the outer surface of the upper end of the polyamide adhesive 304, and the outer surface of the lower end of the polyamide adhesive 304 is fixedly connected with the outer surface of the upper end of the antistatic layer 305.

The utility model discloses by special polyester film 1, acrylic glue 2, special release stable material 3, polyethylene material 4, biaxial stretching polypropylene film 5, BOPET film 6, polyethylene terephthalate 101, polyamideimide 102, polyphenylene sulfide 103, polytetrafluoroethylene 104, silicone powder layer 301, silica gel gluing agent 302, silicon-proof oil film 303, materials such as polyamide gluing agent 304 and antistatic backing 305 constitute, through the special polyester film 1 that sets up, the thin layer that the high temperature resistant material of addding constitutes, can be to the effectual resistance of high temperature, special release stable material 3 through addding, can be exclusively used in on the FPC flexible wiring board, no crackle, no impurity such as bubble and no granule, no silicone oil is appeared under high temperature, give people and brought convenient part.

It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

The special high temperature resistant release film of FPC hot pressing, including biaxial stretching polypropylene film (5), its characterized in that: the outer surface of the lower end of the biaxially oriented polypropylene film (5) is fixedly connected with a BOPET film (6), the outer surface of the upper end of the biaxially oriented polypropylene film (5) is fixedly connected with a polyethylene material (4), the outer surface of the upper end of the polyethylene material (4) is fixedly connected with a special release stabilizing material (3), the outer surface of the upper end of the special release stabilizing material (3) is fixedly connected with an acrylic adhesive (2), the outer surface of the upper end of the acrylic adhesive (2) is provided with a special polyester film (1), the special polyester film (1) comprises polyethylene terephthalate (101), polyamide-imide (102), polyphenylene sulfide (103) and polytetrafluoroethylene (104), the polyethylene terephthalate (101) is located on the outer surface of the upper end of the polyamide-imide (102), and the polyamide-imide (102) is located on the outer surface of the upper end of the polyphenylene sulfide (103), the polyphenylene sulfide (103) is positioned on the outer surface of the upper end of the polytetrafluoroethylene (104).
2. The special high-temperature resistant release film for FPC hot-pressing according to claim 1, characterized in that: the outer surface of the lower end of the polyethylene terephthalate (101) is fixedly connected with the outer surface of the upper end of the polyamide imide (102) through silica gel, the outer surface of the lower end of the polyamide imide (102) is fixedly connected with the outer surface of the upper end of the polyphenylene sulfide (103) through silica gel, and the outer surface of the lower end of the polyphenylene sulfide (103) is fixedly connected with the outer surface of the upper end of the polytetrafluoroethylene (104) through silica gel.
3. The special high-temperature resistant release film for FPC hot-pressing according to claim 1, characterized in that: the special release stabilizing material (3) comprises a silicone powder layer (301), a silica gel adhesive (302), a silicon-proof oil film (303), a polyamide adhesive (304) and an anti-static layer (305), wherein the silicone powder layer (301) is located on the outer surface of the upper end of the silica gel adhesive (302), the silica gel adhesive (302) is located on the outer surface of the upper end of the silicon-proof oil film (303), the silicon-proof oil film (303) is located on the outer surface of the upper end of the polyamide adhesive (304), and the polyamide adhesive (304) is located on the outer surface of the upper end of the anti-static layer (305).
4. The special high-temperature resistant release film for FPC hot-pressing according to claim 3, characterized in that: the outer surface of the lower end of the silicone powder layer (301) is fixedly connected with the outer surface of the upper end of the silica gel adhesive (302), the outer surface of the lower end of the silica gel adhesive (302) is fixedly connected with the outer surface of the upper end of the silicon-proof oil film (303), the outer surface of the lower end of the silicon-proof oil film (303) is fixedly connected with the outer surface of the upper end of the polyamide adhesive (304), and the outer surface of the lower end of the polyamide adhesive (304) is fixedly connected with the outer surface of the upper end of the antistatic layer (305).