CN207630642U - Ultrathin cover film - Google Patents
Ultrathin cover film Download PDFInfo
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- CN207630642U CN207630642U CN201721256154.2U CN201721256154U CN207630642U CN 207630642 U CN207630642 U CN 207630642U CN 201721256154 U CN201721256154 U CN 201721256154U CN 207630642 U CN207630642 U CN 207630642U
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Abstract
The utility model discloses a kind of ultrathin cover films, including carrying film layer, the first adhesion agent layer, polyimide film, the second adhesion agent layer and the protective layer being sequentially overlapped.The utility model has better dimensional stability, and client is more convenient to use, will not tear in use and wrinkle problem.The utility model uses carrier film, the energy good polyimide film of effective protection to avoid the wrinkle in coating process and crawling.By using the structure of the utility model, extra-thin cover film can be made, meets the slim light-weighted market demand of electronic product.
Description
Technical field
The utility model is related to a kind of ultrathin cover films.
Background technology
Current cover film generally comprises 12.5 μm or more of polyimides (PI) film layer and 15 μm or more of adhesion agent layer,
Such cover film is thicker.With the slim lightweight of electronic product, the close refinement of circuit, to meet the market requirement, electronic substrate
Also must change therewith.To meet the market requirement, there is an urgent need for develop a kind of ultrathin cover film.
In the exploitation of ultrathin cover film, since product is relatively thin softer, easily occur wrinkle and coating in coating process
Uneven situation, meanwhile, client tears protective film and is easy to tear film in use, after molding, and when fitting easy tos produce folding
Wrinkle.The problem of these are also prior art urgent need to resolve.
Utility model content
The utility model in view of the above problems, provides a kind of ultrathin cover film, which has preferably
Dimensional stability will not be torn and wrinkle problem in use.
The utility model to achieve the above object, takes following technical scheme to be achieved：
A kind of ultrathin type cover film, including be sequentially overlapped carrying film layer, the first adhesion agent layer, polyimide film, the
Two adhesion agent layers and protective layer.
Preferably, the carrying film material is polyester film, and thickness is 15~50 μm.
Preferably, first adhesion agent layer is crylic acid resin, 3~25 μm of thickness.
Preferably, 5~8 μm of the thickness of the polyimide film.
Preferably, second adhesion agent layer is epoxy resin, 3~15 μm of thickness.
Preferably, the protective layer is polyethylene film, polypropylene screen, polyester film, fitting paper or pearl paper.
The utility model first passes through the first solid and is bonded polyimide film with carrier film when making, then poly-
The another side of acid imide film applies the second adhesion agent layer, then is bonded protective layer.
Compared with prior art, the beneficial effects of the utility model are as follows：
Cover film disclosed by the utility model can be effectively improved wrinkle and crawling situation in coating process, have
Better dimensional stability, client is more convenient to use, will not tear in use and wrinkle problem.
The utility model uses carrier film, the energy good polyimide film of effective protection to avoid the wrinkle in coating process and painting
Cloth is uneven, and client tears carrier film again after the completion of fitting.By using the structure of the utility model, can make extra-thin
Cover film：5~8 μm of polyimide film layer thickness, 3~15 μm of adhesion agent layer thickness.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of ultrathin cover film of the utility model.
Specific implementation mode
The embodiments of the present invention are described in detail below in conjunction with attached drawing.
Referring to Fig. 1, a kind of ultrathin type cover film, including the carrying film layer 1 that is sequentially overlapped, the first adhesion agent layer 2, polyamides are sub-
Amine film layer 3, the second adhesion agent layer 4 and protective layer 5.
Wherein, carrying 1 material of film layer is polyester film, and thickness is 15~50 μm.First adhesion agent layer 2 is acrylic resin
Class, 3~25 μm of thickness.5~8 μm of the thickness of polyimide film 3.Second adhesion agent layer 4 is epoxy resin, thickness 3~15
μm.Protective layer 5 is polyethylene film, polypropylene screen, polyester film, fitting paper or pearl paper.
The utility model first passes through the first solid and is bonded polyimide film with carrier film when making, then poly-
The another side of acid imide film applies the second adhesion agent layer, then is bonded protective layer.
In use, tear initiation protective layer is not in that film is torn at this time due to the good dimensional stability of the utility model
Broken problem.Then the second adhesion agent layer torn is aligned to and is affixed on product position to be pasted, finally tear carrier film.
Compared with prior art, the beneficial effects of the utility model are as follows：
Cover film disclosed by the utility model can be effectively improved wrinkle and crawling situation in coating process, have
Better dimensional stability, client is more convenient to use, will not tear in use and wrinkle problem.
The utility model uses carrier film, the energy good polyimide film of effective protection to avoid the wrinkle in coating process and painting
Cloth is uneven, and client tears carrier film again after the completion of fitting.
Current cover film generally comprises 12.5 μm or more of polyimides (PI) film layer and 15 μm or more of adhesion agent layer,
Such cover film is thicker.By using the structure of the utility model, extra-thin cover film can be made：Polyimide film
5~8 μm of thickness, 3~15 μm of adhesion agent layer thickness.
One of preferred embodiment of the utility model is：
It is a kind of ultrathin type cover film, include successively from top to bottom：25 μm of polyester carries film layer, 10 μm of acrylic resin
Class adhesion agent layer, 5 μm of polyimide film, 5 μm of epoxy resin adhesion agent layer and release paper.
By existing common cover film (1315), without the ultra-thin cover film of carrier film, the ultra-thin cover film with carrier film (this
Utility model) it compares, flexibility comparison is shown in Table 1, and dimensional performance comparison is shown in Table 2.
In above-mentioned comparison, without the structure snd size of the ultra-thin cover film of carrier film, in addition to there is no carrier film and first
Other than adhesion agent layer, with ultra-thin cover film (the utility model) all same with carrier film.
1 flexibility of table compares
Data above can be seen that, minimum without the ultra-thin cover film bounce of carrier film, 3~4 times smaller than common cover film
Left and right, most soft, after pasting carrier film, bounce is 20 times bigger than common cover film.So after patch carrier film, ultrathin membrane is easier
It is coated with and is conducive to client's dyestripping, fitting.
2 ruler of table pacifies performance comparison
| Product type | TD (%%) | MD (%%) |
| Common cover film (1315) | ±10 | ±10 |
| Without the ultra-thin cover film of carrier film | ±15 | ±15 |
| Ultra-thin cover film with carrier film | ±3 | ±3 |
Data above can be seen that the ultra-thin cover film with carrier film i.e. the utility model product and pacify with better size
Qualitative energy.
Only as described above, the only preferred embodiment of the utility model, when the utility model cannot be limited with this
The range of implementation, i.e., generally according to simple made by the content recorded in the utility model claims and utility model specification
Equivalent changes and modifications all still belong within the utility model claims scope.In addition, abstract part and title are only
For assisting patent document search to be used, not it is used for limiting the interest field of the utility model.
Claims (3)
1. a kind of ultrathin type cover film, which is characterized in that carrying film layer, the first adhesion agent layer, polyamides including being sequentially overlapped are sub-
Amine film layer, the second adhesion agent layer and protective layer；First adhesion agent layer is crylic acid resin, 3~25 μm of thickness；It is described poly-
5~8 μm of the thickness of acid imide film layer；Second adhesion agent layer is epoxy resin, 3~15 μm of thickness.
2. a kind of ultrathin cover film according to claim 1, which is characterized in that the carrying film material is polyester
Film, thickness are 15~50 μm.
3. a kind of ultrathin cover film according to claim 1, which is characterized in that the protective layer is polyethylene film, gathers
Propylene film, polyester film, fitting paper or pearl paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721256154.2U CN207630642U (en) | 2017-09-27 | 2017-09-27 | Ultrathin cover film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721256154.2U CN207630642U (en) | 2017-09-27 | 2017-09-27 | Ultrathin cover film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207630642U true CN207630642U (en) | 2018-07-20 |
Family
ID=62858283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721256154.2U Active CN207630642U (en) | 2017-09-27 | 2017-09-27 | Ultrathin cover film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207630642U (en) |
-
2017
- 2017-09-27 CN CN201721256154.2U patent/CN207630642U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230505 Address after: Plant 4, No. 135 Buling Road, Huangpu District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangdong Yinxin Technology Co.,Ltd. Address before: 510000 No. 79 Rui he road, Guangzhou hi tech Industrial Development Zone, Guangdong 607-1 Patentee before: GUANGZHOU YUNPU ELECTRONIC TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |