CN213172187U - AB glue suitable for PC-PMMA film and protective film suitable for curved screen - Google Patents
AB glue suitable for PC-PMMA film and protective film suitable for curved screen Download PDFInfo
- Publication number
- CN213172187U CN213172187U CN202022100673.8U CN202022100673U CN213172187U CN 213172187 U CN213172187 U CN 213172187U CN 202022100673 U CN202022100673 U CN 202022100673U CN 213172187 U CN213172187 U CN 213172187U
- Authority
- CN
- China
- Prior art keywords
- film
- layer
- pmma
- silica gel
- glue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Laminated Bodies (AREA)
Abstract
The utility model relates to a AB glue suitable for PC-PMMA membrane and be applicable to the protection film of curved screen. The AB glue comprises a stripping film, a low-viscosity silica gel layer, a soft base material layer, an OCA layer, a PET base material layer, a high-viscosity silica gel layer and a stripping film which are contacted in sequence; the soft base material layer is any one of a PVC film, a TPU film, a TPH film and a PE film, and the thickness of the soft base material layer is 20-80 mu m; the OCA layer is a photocuring polyacrylic resin adhesive layer, the thickness of the OCA layer is 100-300 mu m, and the Shore A hardness is 0-1A; the high-viscosity silica gel layer is a silicone resin adhesive layer, the thickness of the high-viscosity silica gel layer is 10-40 mu m, and the stripping force is 800-2000 gf/25 mm. The utility model discloses a AB glue suitable for PC-PMMA membrane and protection film thereof, this AB glue can not produce the bubble point with PC-PMMA membrane laminating back, can have higher weatherability through harsh environmental test.
Description
Technical Field
The utility model relates to a screen protection film technical field especially relates to a AB glue suitable for PC-PMMA membrane and be applicable to the protection film of curved screen.
Background
With the aging of the manufacturing process of the curved glass, the manufacturing cost is reduced year by year, and the popularity of the curved screen in electronic products is higher and higher. The curved screen improves the screen ratio of the electronic product and brings people a strong three-dimensional sense. Meanwhile, the curved screen also brings about not less challenges to the screen protection film industry of electronic products. Every time the electronic product screen is innovated, the corresponding protective film industry needs to design a new protective film structure scheme and search for new materials so as to adapt to the requirements and characteristics of the new electronic product screen.
The perfect fit of the curved screen can be understood as that the protective film is fitted with the screen without any gap, the protective film can be replaced easily, and no edge rebound gap can be caused after long-time use.
At present, in order to better laminate with the curved surface screen, the scheme that the protection film is commonly used has: curved surface cold-engraved toughened glass, plastic glass PC-PMMA composite board hot bending, PET light fixation type bending, water condensation film and the like. The manufacturing cost of the curved surface cold-engraved tempered glass is too high, and the problem that the rebound gap at the edge of the curved surface cold-engraved tempered glass caused by stress and vibration needs to be manufactured with high cost to manufacture a corresponding protective film is solved; in addition, curved surface cold-engraved tempered glass is completely ineffective in unlocking popular underscreen fingerprints. The cost of PET hot bending and PET light fixing type bending is relatively low, but the PET still has very large rebound risk after being fixed. The hydrogel film is suitable for the curved screen, has good effect and can be well attached, but the hydrogel film has short service life and is easy to scratch, scratch and rub edges and fall off. The plastic glass PC-PMMA composite material can be well shaped after being bent, inherits the toughness of PC and the hardness of PMMA, and still has certain softness compared with curved surface cold-engraved tempered glass.
Therefore, the most common scheme for the protective film of the curved screen at present is that the plastic glass PC-PMMA composite board is subjected to hot bending. However, the protective film formed by bonding the conventional AB glue to the PC-PMMA film inevitably generates bubble points in hot bending or environmental testing.
The utility model aims to solve the problem of designing an AB glue and be applicable to the protection film of curved screen, this AB glue can not produce the bubble point after laminating with the PC-PMMA membrane.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide an AB glue suitable for PC-PMMA membrane and be applicable to the protection film of curved screen, this AB glue can not produce the bubble point with PC-PMMA membrane laminating back, can have higher weatherability through harsh environmental test.
The purpose of the utility model is realized through the following technical scheme:
an AB glue suitable for a PC-PMMA film comprises a stripping film, a low-viscosity silica gel layer, a soft substrate layer, an OCA layer, a PET substrate layer, a high-viscosity silica gel layer and a release film which are contacted in sequence; wherein the content of the first and second substances,
the soft base material layer is any one of a PVC film, a TPU film, a TPH film and a PE film, and the thickness of the soft base material layer is 20-80 mu m;
the OCA layer is a photocuring polyacrylic resin adhesive layer, the thickness of the OCA layer is 100-300 mu m, and the Shore A hardness is 0-1A;
the high-viscosity silica gel layer is a silicone resin layer, the thickness of the high-viscosity silica gel layer is 10-40 mu m, and the stripping force is 800-2000 gf/25 mm;
the film tearing force of the stripping film matched with the low-viscosity silica gel layer is 5-20 gf/25 mm;
the film tearing force of the release film matched with the high-viscosity silica gel layer is 2-15gf/25 mm.
In one embodiment, the release film is any one of a PET film, a silicone release film, a fluorine release film, and a non-silicone release film.
In one embodiment, the thickness of the stripping film is 50-100 μm.
In one embodiment, the low-viscosity silicone adhesive layer is a silicone adhesive layer.
In one embodiment, the low-viscosity silica gel layer has a thickness of 20 to 50 μm and a peel force of 10 to 500gf/25 mm.
In one embodiment, the thickness of the PET substrate layer is 25-50 μm.
In one embodiment, the release film is a non-silicon release film or a fluorine release film.
In one embodiment, the thickness of the release film is 50-100 μm.
In one embodiment, the release film is a fluorine release film and has a thickness of 50 μm, and the peel force of the release film matched with the low-viscosity silica gel layer is 10gf/25 mm.
The utility model also discloses a protective film suitable for the curved screen, which comprises the AB glue suitable for the PC-PMMA film;
the protective film suitable for the curved screen also comprises a PC-PMMA film;
and after the AB glue suitable for the PC-PMMA film is peeled off from the release film, the high-viscosity silica gel layer is attached to the PC-PMMA film.
Compared with the prior art, the utility model, high-efficient selfreparing protection film has following effect:
(1) the AB glue provided by the utility model does not generate bubble points in the hot bending process after being attached to the PC-PMMA film, and can pass a severe environment test;
(2) the AB glue provided by the utility model can not generate bubble point after being attached to the PC-PMMA film after being boiled in boiling water for one hour, can not generate bubbles in an 85 ℃ x 85% environment test for 24 hours, and has higher weather resistance;
(3) the utility model provides a AB glue forms the protection film after laminating with the PC-PMMA membrane that has the silk screen printing frame, and when the protection film was laminated in the curved surface screen, AB glue still can fill the gap of silk screen printing frame to make protection film and curved surface screen laminate better.
(4) The utility model provides a protection film laminating does not bounce back, does not stick up the limit in curved surface screen.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of an AB glue suitable for a PC-PMMA film of the present invention;
fig. 2 is a schematic structural diagram of the protective film for the curved screen of the present invention;
fig. 3 is a schematic view illustrating the protective film shown in fig. 2 attached to a curved screen.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the utility model discloses an AB glue 10 suitable for PC-PMMA membrane, including peel off membrane 100, low silica gel layer 200, soft substrate layer 300, OCA layer 400, PET substrate layer 500, high silica gel layer 600 and from type membrane 700 that contact in proper order.
Wherein the OCA layer 400 is a photo-cured polyacrylic resin adhesive layer, the thickness of the adhesive layer is 100-300 μm, and the Shore A hardness is 0-1A. The soft base material layer 300 is any one of a PVC film, a TPU film, a TPH film and a PE film, and the thickness of the soft base material layer 300 is 20-80 μm. The high-viscosity silica gel layer 600 is a silicone resin layer, the thickness of the high-viscosity silica gel layer 600 is 10-40 μm, and the peeling force is 800-2000 gf/25 mm. The film tearing force of the combination of the stripping film 100 and the low-viscosity silica gel layer 200 is 5-20 gf/25 mm. The film tearing force of the combination of the release film 700 and the high-viscosity silica gel layer 600 is 2-15gf/25 mm.
Specifically, the release film 100 is any one of a PET film, a silicone oil release film, a fluorine release film, and a non-silicone release film. And the thickness of the release film 100 is 50 to 100 μm.
Specifically, the low-viscosity silicone adhesive layer 200 is a silicone adhesive layer. The low-viscosity silica gel layer 200 has a thickness of 20 to 50 μm and a peeling force of 10 to 500gf/25 mm.
Specifically, the thickness of the PET substrate layer 500 is 25-50 μm.
Specifically, the release film 700 is a non-silicon release film or a fluorine release film, and the thickness of the release film 700 is 50 to 100 μm.
Specifically, the release film 100 is a fluorine release film, and has a thickness of 50 μm, and the film tearing force of the release film 100 and the low-viscosity silicone gel layer 200 is 10gf/25 mm.
Specifically, the thickness of the highly viscous silica gel layer 600 was 20 μm, and the peel force was 1500gf/25 mm. The release film 700 is a fluorine release film, the thickness of the release film is 50 μm, and the film tearing force of the release film 700 matched with the high-viscosity silica gel layer 600 is 5gf/25 mm.
The utility model discloses a do not produce the bubble point in the curved in-process of heat after AB glue 10 and PC-PMMA membrane 20 (as shown in fig. 2) laminating, can pass through harsh environmental test.
The utility model provides a AB glue 10 and the laminating of PC-PMMA membrane 20 back in boiling water normal water boil an hour also can not produce the bubble point, do not produce the bubble in 85 ℃ x 85% environmental test 24 hours, have higher weatherability.
The utility model provides a protection film 30 (as shown in figure 2) that forms after AB glue 10 and the laminating of PC-PMMA membrane 20 are laminated and are not kick-backed, do not stick up the limit in curved screen 40 (as shown in figure 3).
The utility model provides a AB glue forms the protection film after laminating with the PC-PMMA membrane that has the silk screen printing frame, and when the protection film was laminated in the curved surface screen, AB glue still can fill the gap of silk screen printing frame to make protection film and curved surface screen laminate better.
The specific structure of the AB glue 10 suitable for PC-PMMA films is illustrated below:
example 1
As shown in fig. 1, in the present embodiment, the AB glue 10 suitable for the PC-PMMA film includes a release film 100, a low-viscosity silicone rubber layer 200, a soft base material layer 300, an OCA layer 400, a PET base material layer 500, a high-viscosity silicone rubber layer 600, and a release film 700, which are sequentially in contact with each other.
As shown in fig. 1, the release film 100 is a fluorine release film 700 and has a thickness of 50 μm. The low-viscosity silica gel layer 200 is a silica gel layer, and the thickness of the low-viscosity silica gel layer 200 is 30 μm, and the peel force is 40gf/25 mm. The peel film 100 and the low-tack silicone rubber layer 200 were combined with a film tearing force of 10gf/25 mm.
In the present embodiment, the soft base material layer 300 is a TPH film having a thickness of 20 μm. The OCA layer 400 is a photo-cured polyacrylic resin adhesive layer, and has a thickness of 100 μm and a shore a hardness of 0A. The thickness of the PET substrate layer 500 was 25 μm.
In this embodiment, the high viscosity silica gel layer 600 is a silicone adhesive layer, and the thickness of the high viscosity silica gel layer 600 is 20 μm, and the peeling force is 1500gf/25 mm. The release film 700 is a fluorine release film 700, and the thickness of the release film 700 is 50 μm. The film tearing force of the high-viscosity silica gel layer 600 matched with the release film 700 is 5gf/25 mm.
Example 2
As shown in fig. 1, in the present embodiment, the AB glue 10 suitable for the PC-PMMA film includes a release film 100, a low-viscosity silicone rubber layer 200, a soft base material layer 300, an OCA layer 400, a PET base material layer 500, a high-viscosity silicone rubber layer 600, and a release film 700, which are sequentially in contact with each other.
As shown in FIG. 1, the release film 100 is a PET film and has a thickness of 75 μm. The low-viscosity silica gel layer 200 is a silica gel layer, and the thickness of the low-viscosity silica gel layer 200 is 20 μm, and the peel force is 10gf/25 mm. The peel film 100 and the low-tack silicone rubber layer 200 were combined with a film tearing force of 5gf/25 mm.
In the present embodiment, the soft base material layer 300 is a PVC film having a thickness of 40 μm. The OCA layer 400 is a photo-cured polyacrylic resin adhesive layer, and has a thickness of 200 μm and a shore a hardness of 0.5A. The thickness of the PET substrate layer 500 was 36 μm.
In this embodiment, the high viscosity silica gel layer 600 is a silicone adhesive layer, and the thickness of the high viscosity silica gel layer 600 is 10 μm, and the peeling force is 800gf/25 mm. The release film 700 is a non-silicon release film 700, and the thickness of the release film 700 is 75 μm. The film tearing force of the high-viscosity silica gel layer 600 matched with the release film 700 is 2gf/25 mm.
Example 3
As shown in fig. 1, in the present embodiment, the AB glue 10 suitable for the PC-PMMA film includes a release film 100, a low-viscosity silicone rubber layer 200, a soft base material layer 300, an OCA layer 400, a PET base material layer 500, a high-viscosity silicone rubber layer 600, and a release film 700, which are sequentially in contact with each other.
As shown in fig. 1, the release film 100 is a silicone oil release film 700 and has a thickness of 100 μm. The low-viscosity silica gel layer 200 is a silica gel layer, and the thickness of the low-viscosity silica gel layer 200 is 50 μm, and the peel force is 500gf/25 mm. The peel film 100 and the low-tack silicone rubber layer 200 were combined with a film tearing force of 20gf/25 mm.
In the present embodiment, the soft base material layer 300 is a TPH film having a thickness of 80 μm. The OCA layer 400 is a photo-cured polyacrylic resin adhesive layer, and has a thickness of 300 μm and a shore a hardness of 1A. The thickness of the PET substrate layer 500 was 50 μm.
In this embodiment, the high viscosity silica gel layer 600 is a silicone gel layer, and the thickness of the high viscosity silica gel layer 600 is 40 μm, and the peeling force is 2000gf/25 mm. The release film 700 is a fluorine release film 700, and the thickness of the release film 700 is 100 μm. The film tearing force of the high-viscosity silica gel layer 600 matched with the release film 700 was 15gf/25 mm.
The utility model discloses a before AB glue 10 suitable for PC-PMMA membrane was laminated with PC-PMMA membrane 20, need peel off from AB glue 10 suitable for PC-PMMA membrane with parting film 700 to laminate high glue film 600 and PC-PMMA membrane 20. The AB glue 10 suitable for the PC-PMMA film is attached to the PC-PMMA film 20 to form a protective film 30 suitable for a curved screen (as shown in FIG. 2).
It should be noted that, when the screen printing frame 210 (as shown in fig. 3) with a thickness of 1-10 μm is printed on the PC-PMMA film 20, the AB glue 10 suitable for the PC-PMMA film can also fill the gap of the screen printing frame 210, so that the protective film 30 can be better attached to the curved screen.
When the curved panel 40 is to be protected by film adhesion, the release film 100 of the protective film 30 (shown in fig. 2) applied to the curved panel, that is, the release film 100 of the AB paste 10 applied to the PC-PMMA film, needs to be peeled. After the peeling film 100 is peeled off from the protective film 30 suitable for the curved panel, the low-viscosity silicone layer 200 is attached to the curved panel 40 (as shown in fig. 3).
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The AB glue suitable for the PC-PMMA film is characterized by comprising a stripping film, a low-viscosity silica gel layer, a soft base material layer, an OCA layer, a PET base material layer, a high-viscosity silica gel layer and a release film which are sequentially contacted; wherein the content of the first and second substances,
the soft base material layer is any one of a PVC film, a TPU film, a TPH film and a PE film, and the thickness of the soft base material layer is 20-80 mu m;
the OCA layer is a photocuring polyacrylic resin adhesive layer, the thickness of the OCA layer is 100-300 mu m, and the Shore A hardness is 0-1A;
the high-viscosity silica gel layer is a silicone resin layer, the thickness of the high-viscosity silica gel layer is 10-40 mu m, and the stripping force is 800-2000 gf/25 mm;
the film tearing force of the stripping film matched with the low-viscosity silica gel layer is 5-20 gf/25 mm;
the film tearing force of the release film matched with the high-viscosity silica gel layer is 2-15gf/25 mm.
2. The AB glue suitable for the PC-PMMA film of claim 1, wherein the release film is any one of a PET film, a silicone oil release film, a fluorine release film and a non-silicone release film.
3. The AB glue suitable for the PC-PMMA film of claim 2, wherein the thickness of the stripping film is 50-100 μm.
4. The AB glue suitable for use with PC-PMMA films of claim 1, wherein the low-viscosity silicone glue layer is a silicone glue layer.
5. The AB glue suitable for a PC-PMMA film according to claim 4, wherein the low-viscosity silica gel layer has a thickness of 20 to 50 μm and a peel force of 10 to 500gf/25 mm.
6. The AB glue suitable for the PC-PMMA film of claim 1, wherein the thickness of the PET substrate layer is 25-50 μm.
7. The AB glue suitable for use with a PC-PMMA film as defined in claim 1, wherein the release film is a non-silicon release film or a fluorine release film.
8. The AB glue suitable for the PC-PMMA film of claim 7, wherein the thickness of the release film is 50-100 μm.
9. The AB glue suitable for PC-PMMA film according to claim 3, characterized in that the peeling film is a fluorine release film with a thickness of 50 μm, and the film tearing force of the peeling film and the low-viscosity silica gel layer is 10gf/25 mm.
10. A protective film suitable for a curved screen, comprising an AB glue suitable for a PC-PMMA film according to any one of claims 1 to 9;
the protective film suitable for the curved screen also comprises a PC-PMMA film;
and after the AB glue suitable for the PC-PMMA film is peeled off from the release film, the high-viscosity silica gel layer is attached to the PC-PMMA film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022100673.8U CN213172187U (en) | 2020-09-22 | 2020-09-22 | AB glue suitable for PC-PMMA film and protective film suitable for curved screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022100673.8U CN213172187U (en) | 2020-09-22 | 2020-09-22 | AB glue suitable for PC-PMMA film and protective film suitable for curved screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213172187U true CN213172187U (en) | 2021-05-11 |
Family
ID=75775350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022100673.8U Active CN213172187U (en) | 2020-09-22 | 2020-09-22 | AB glue suitable for PC-PMMA film and protective film suitable for curved screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213172187U (en) |
-
2020
- 2020-09-22 CN CN202022100673.8U patent/CN213172187U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213060732U (en) | High-weather-resistance AB adhesive suitable for curved screen | |
| JP4806730B2 (en) | Transparent adhesive sheet and image display device | |
| JP5572431B2 (en) | Flat plate laminating resin laminate and laminated flat plate | |
| CN109401655B (en) | Functional soft protective film and preparation method thereof | |
| CN108363224B (en) | Glass backboard preparation process, glass backboard and metal frame attaching process | |
| CN113211911B (en) | 3D curved surface AF film coating screen mobile phone protective film and preparation method thereof | |
| JP4123355B2 (en) | Transparent sheet, method for manufacturing the same, and liquid crystal display device | |
| CN213172187U (en) | AB glue suitable for PC-PMMA film and protective film suitable for curved screen | |
| CN108300353B (en) | TPU (thermoplastic polyurethane) protective film and preparation method thereof | |
| CN113263718A (en) | Protective film, preparation method thereof, laminating method and terminal | |
| CN113088211B (en) | Extreme-free hot-bending polyester protective film, preparation method and application thereof | |
| CN107603506B (en) | Curved-surface screen full-wrapping soft film and preparation method thereof | |
| CN211664989U (en) | Novel AB glue membrane | |
| CN205395356U (en) | All standing protection film of feeling | |
| CN208649198U (en) | A kind of screen protector | |
| CN213085872U (en) | High-efficient selfreparing protection film | |
| CN111087937A (en) | Be applied to protection film of curved surface screen cell-phone | |
| CN108531100B (en) | Protective paste for screen | |
| CN212610396U (en) | Novel composite construction's double faced adhesive tape and screen protection film | |
| CN202013717U (en) | Advertisement board having protection function with rubber magnetic plasters | |
| CN213060734U (en) | Protection film suitable for cambered surface screen | |
| CN204936391U (en) | A kind of advertisement sticking film not staying cull | |
| CN111154417B (en) | Protective film assembly | |
| CN116052530B (en) | Composite film and preparation method thereof, cover plate assembly, display screen and electronic device | |
| CN210506185U (en) | Screen fingerprint identification photoelectric protection film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |