CN217651143U

CN217651143U - Anti-explosion protective film for mobile phone rear cover

Info

Publication number: CN217651143U
Application number: CN202221954925.6U
Authority: CN
Inventors: 周永南; 李涛
Original assignee: Great Rich Technology Co Ltd
Current assignee: Great Rich Technology Co Ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-10-25
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses a lid is with protection film behind cell-phone, including the substrate layer, an at least surface of substrate layer is provided with the recess that a plurality of looks are parallel, and the groove length direction of recess extends along the first direction, and the interval sets up between the recess, and the thickness of recess is followed the groove width direction and is reduced to the middle part by both sides gradually. This lid is with explosion-proof protection film behind cell-phone is rational in infrastructure, and the curved surface edge laminating of lid behind the recess that at least one surface of substrate layer set up and curved surface cell-phone has improved behind the curved surface cell-phone lid curved surface edge prevent grey limit, prevent bounce-back or prevent the effect of upwarping, not only is applicable to a set of side for the lid behind the cell-phone of curved surface, and also is applicable to the lid behind the plane cell-phone.

Description

Anti-explosion protective film for mobile phone rear cover

Technical Field

The utility model belongs to the technical field of the protection film technique and specifically relates to an explosion-proof protection film is used to lid behind cell-phone.

Background

With the development of the electronic industry, devices such as smart phones become indispensable tools for daily life. The development of double-sided glass technology gradually becomes mainstream cell-phone shell, but glass cell-phone shell exists poor and fragile shortcoming of wearability, in order to improve the mechanical strength of glass cell-phone shell, and fly off when avoiding the glass breakage and arouse the condition emergence of using customer's injury, consequently, need use the rupture membrane behind the glass cell-phone shell. The streamline appearance of a curved electronic product is more and more popular, the existing explosion-proof membrane has poor bending property, and the edge of the explosion-proof membrane is easy to have gray edge rebound and upwarp after being attached to a mobile phone shell; and the stretching and shrinking performance of the existing explosion-proof membrane is poor, and the corner part of the curved surface structure is easy to warp.

Therefore, there is a need for an improvement of the protective film in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide a lid is with the explosion-proof protection film that grey limit and bounce-back upwarp are difficult for appearing in the edge laminating behind the cell-phone, be fit for using with the lid cooperation behind the cell-phone that a set of side is the curved surface.

In order to realize the technical effects, the utility model adopts the technical scheme that: the utility model provides a lid is with explosion-proof protection film behind cell-phone, includes the substrate layer, its characterized in that, at least one surface of substrate layer is provided with the recess that a plurality of looks are parallel, the groove length direction of recess extends along the first direction, the interval sets up between the recess, the thickness of recess is followed the groove width direction and is reduced to the middle part by both sides gradually.

In order to improve the corner laminating nature of lid behind protection film and the curved surface cell-phone, prevent to rise to stick up, preferred technical scheme does, the both sides of recess all are provided with a plurality of depressed part, the depressed part is followed the groove width direction arch of recess, the depressed part with recess cross-linking department rounding off.

In order to optimize the structure of the depressed part, improve the fitness of the periphery and the corner of the protective film and the curved-surface mobile phone, and further ensure that the anti-bounce upwarping effect of the protective film is better, the preferred technical scheme is that the side edge of the depressed part extends to form a right angle with the intersection included angle of the groove length extension of the groove.

In order to optimize the thickness of the groove and improve the adhesion between the protective film and the edge of the rear cover of the planar or curved mobile phone, the optimal technical scheme is that the minimum thickness of the groove is less than or equal to half of the thickness of the base material layer.

In order to optimize the edge of the groove, the edge of the mobile phone rear cover of the substrate layer is improved, the edge is attached to the edge and is not prone to being grey and rebounding, and the groove is smoothly transited from two sides to the middle part according to the optimal technical scheme.

In order to improve the tensile properties of protection film, further prevent that protection film and cell-phone backshell laminating edge from rebounding and upwarping to improve the roughness of protection film surface, and then improve the antifouling and water resistance of protection film, battery in the protection cell-phone backshell, preferred technical scheme does, the substrate layer includes surface and internal surface, recess and depressed part all set up in the surface, the surface coating has the sclerosis layer.

In order to improve the tensile properties of protection film, further prevent that protection film and cell-phone backshell laminating edge from rebounding and upwarping to improve the roughness of protection film surface, and then improve the antifouling and water resistance of protection film, battery in the protection cell-phone backshell, preferred technical scheme does, the substrate layer includes surface and internal surface, surface and internal surface all are provided with the recess, the recess both sides of surface and internal surface all are provided with a plurality of depressed part, the recess and the corresponding setting of depressed part homogeneous of surface and internal surface, the surface coating has the sclerosis layer.

In order to optimize the structure of the groove and further improve the fit between the groove of the protective film and the edge of the mobile phone rear shell, the preferable technical scheme is that the depth of the groove on the outer surface is greater than or equal to that of the groove on the inner surface.

In order to strengthen the tensile property of the edge of the protective film and the corner of the protective film, the anti-reverse-bouncing effect is further improved, and the preferable technical scheme is that the thickness of the hardened layer of the groove and the depressed part is more than or equal to the thickness of the hardened layer between the grooves.

In order to endow the protective film with the adhesive property with the mobile phone rear shell, the preferable technical scheme is that an adhesive layer is laid on the inner surface. In order to improve the ultraviolet resistance of the protective film, further optimize the aging resistance of the mobile phone battery and prolong the service life of the mobile phone battery, the adhesive layer is an ultraviolet-proof adhesive layer, and/or the hardened layer is an ultraviolet-proof hardened layer.

The utility model has the advantages and the beneficial effects that:

this lid is with explosion-proof protection film behind cell-phone is rational in infrastructure, and the curved surface edge laminating of lid behind the recess that at least one surface of substrate layer set up and curved surface cell-phone has improved behind the curved surface cell-phone lid curved surface edge prevent grey limit, prevent bounce-back or prevent the effect of upwarping, not only is applicable to a set of side for the lid behind the cell-phone of curved surface, and also is applicable to the lid behind the plane cell-phone.

Drawings

FIG. 1 is a schematic structural diagram of an explosion-proof membrane stack in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a substrate layer in embodiment 1 of the present invention;

fig. 3 is a schematic perspective view of a substrate layer in embodiment 1 of the present invention;

fig. 4 is a schematic structural view of a substrate layer in embodiment 2 of the present invention;

fig. 5 is a schematic structural view of the explosion-proof membrane lamination of embodiment 3 of the present invention;

fig. 6 is a schematic structural view of a substrate layer in embodiment 3 of the present invention;

fig. 7 is a schematic perspective view of a substrate layer according to embodiment 3 of the present invention;

fig. 8 is another schematic perspective view of the substrate layer according to embodiment 3 of the present invention.

In the figure: 1. a substrate layer; 2. a hardened layer; 3. an adhesive layer; 4. a release film; 5. an outer protective film; 10. a groove; 100. a recessed portion; 110. an outer surface; 111. an inner surface.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The references to "outer surface", "inner surface" and "bottom surface" are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

A first direction

Transverse or longitudinal to the surface of the substrate layer.

Adhesive layer

The material of the adhesive layer is OCA optical polyacrylic acid adhesive.

Hardened layer

The minimum thickness of the hardened layer means the thickness of the hardened layer between adjacent grooves.

Structure of explosion-proof membrane

The explosion-proof membrane comprises an outer-layer protective membrane, a hardening layer, a base material layer, an adhesive layer and a release membrane which are overlapped in sequence from outside to inside; the release force of the release film reaches 50g or more, and the peeling force of the adhesive layer reaches 1600g or more.

The thickness of the outer protection film is 10 to 100 micrometers, the minimum thickness of the hardened layer is 1 to 2 micrometers, the thickness of the base material layer is 30 to 100 micrometers, the thickness of the adhesive layer is 10 to 50 micrometers, and the thickness of the release film is 30 to 150 micrometers.

Example 1

As shown in fig. 1 to 3, the explosion-proof protective film for the rear cover of the mobile phone comprises an outer protective film 5, a hardened layer 2, a substrate layer 1, an adhesive layer 3 and a release film 4 which are overlapped in sequence from outside to inside, wherein the substrate layer 1 comprises an outer surface 110 and an inner surface 111, the outer surface 110 is provided with a plurality of grooves 10, the grooves 10 extend along a first direction, the adjacent grooves 10 are arranged at intervals, and the thickness of the grooves 10 is gradually reduced from two sides to the middle part along the groove width direction; the groove 10 is smoothly transited from two sides to the middle part.

The minimum thickness of the recess 10 is equal to half the layer thickness of the substrate layer 1.

The outer surface 110 is coated with a hardening layer 2, the thickness of the hardening layer 2 of the groove 10 is larger than that of the hardening layer 2 between the grooves 10, and the inner surface 111 is paved with an adhesive layer 3. The adhesive layer 3 is an anti-ultraviolet adhesive layer, and the hardened layer 2 is an anti-ultraviolet hardened layer.

The substrate layer 1 is a PET substrate layer, the adhesive layer 3 is an OCA optical polyacrylic acid adhesive layer, the layer thickness of the substrate layer 1 is 50 μm, the minimum thickness of the hardening layer 2 is 1.2 μm, and the layer thickness of the adhesive layer 3 is 20 μm.

Example 2

As shown in fig. 4, embodiment 2 is based on embodiment 1, and is different in that a plurality of concave portions 100 are respectively disposed on both sides of a groove 10, the concave portions 100 are convex in the groove width direction of the groove 10, the cross-linking portions of the concave portions 100 and the groove 10 are in smooth transition, and the included angle between the lateral extension of the concave portions 100 and the groove length extension of the groove 10 is a right angle; the substrate layer 1 includes an outer surface 110 and an inner surface 111, and the groove 10 and the recess 100 are both disposed on the outer surface 110.

Example 3

As shown in fig. 5 to 8, embodiment 3 is based on embodiment 1, and is different in that the substrate layer 1 includes an outer surface 110 and an inner surface 111, the outer surface 110 and the inner surface 111 are both provided with grooves 10, the grooves of the outer surface 110 and the inner surface 111 are arranged in a one-to-one correspondence manner, the depth of the groove of the outer surface 110 is greater than that of the groove of the inner surface 111, and the edge of the curved side is better in fitting when the substrate layer is used in cooperation with the rear cover of the mobile phone; the colloid is filled to the recess that the internal surface set up, and adhesive layer thickness here is compared in between the adjacent recess adhesive layer thickness of substrate layer internal surface bigger, and the marginal bonding effect is better, further improves behind rupture membrane and the cell-phone lid cooperation use back edge laminating nature, and the proof warp effect is better.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and embellishments can be made without departing from the technical principle of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an explosion-proof protection film is used to lid behind cell-phone, includes substrate layer (1), its characterized in that, at least one surface of substrate layer (1) is provided with a plurality of parallel recess (10), the groove length direction of recess (10) extends along the first direction, the interval sets up between recess (10), the thickness of recess (10) is followed the groove width direction and is reduced to the middle part by both sides gradually, the both sides of recess (10) all are provided with a plurality of depressed part (100), depressed part (100) are followed the groove width direction of recess (10) is protruding, depressed part (100) with recess (10) cross-linking department rounding off.

2. The explosion-proof protection film for the rear cover of the mobile phone according to claim 1, wherein the included angle between the extension of the side edge of the concave part (100) and the extension of the groove length of the groove (10) is a right angle.

3. The explosion-proof protective film for the back cover of the mobile phone as claimed in claim 1, wherein the minimum thickness of the groove (10) is less than or equal to half of the layer thickness of the substrate layer (1).

4. The explosion-proof protection film for the rear cover of the mobile phone according to claim 1, wherein the groove (10) is smoothly transited from two sides to the middle part.

5. The explosion-proof protection film for the rear cover of the mobile phone according to claim 1, wherein the base material layer (1) comprises an outer surface (110) and an inner surface (111), the groove (10) and the recess (100) are both arranged on the outer surface (110), and the outer surface (110) is coated with the hardened layer (2).

6. The explosion-proof protection film for the rear cover of the mobile phone according to claim 1, wherein the base material layer (1) comprises an outer surface (110) and an inner surface (111), the outer surface (110) and the inner surface (111) are both provided with grooves (10), a plurality of concave parts (100) are arranged on two sides of each of the grooves (10) of the outer surface (110) and the inner surface (111), the grooves (10) and the concave parts (100) of the outer surface (110) and the inner surface (111) are uniformly arranged in a corresponding manner, and the outer surface (110) is coated with a hardened layer (2).

7. The explosion-proof protection film for the rear cover of the mobile phone according to claim 6, wherein the groove depth of the outer surface (110) is greater than or equal to the groove depth of the inner surface (111).

8. The explosion-proof protection film for the mobile phone rear cover according to claim 5 or 6, characterized in that the thickness of the hardened layers (2) of the grooves (10) and the recesses (100) is greater than or equal to the thickness of the hardened layers (2) between the adjacent grooves (10).

9. The explosion-proof protective film for the mobile phone rear cover according to claim 5 or 6, characterized in that the inner surface (111) is laid with an adhesive layer (3).