Anti-warping PET (Polyethylene Terephthalate) protective film

Abstract

The utility model discloses an anti-warping PET (Polyethylene Terephthalate) protective film which comprises a PET protective film main body, the PET protective film main body comprises a protective layer, a base material layer and a release layer, the base material layer is arranged between the protective layer and the release layer, and the base material layer comprises a hardened layer, a PET base layer and an adhesive layer; the anti-warping PET protective film further comprises a detachable anti-warping structure installed on the surface of the PET protective film body, the detachable anti-warping structure comprises two U-shaped protective strips and four connecting strips, and the edges of the two sides of the PET protective film body are sleeved with the two U-shaped protective strips respectively. According to the PET protective film, the PET protective film in the prior art is improved and optimized, and the detachable anti-warping structure is designed on the PET protective film, so that the PET protective film main body can be effectively restrained and protected during the storage and transportation of the PET protective film, and the PET protective film main body is prevented from warping due to external force during the storage and transportation of the PET protective film; and the subsequent normal mounting of the PET protective film main body is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of PET protective films, and particularly relates to a warpage-proof PET protective film. Background Technique

[0002] A PET protective film is a mobile phone protective film made of PET material, which can be attached to the surface of the mobile phone display screen to protect the display screen and extend the service life of the mobile phone. For example, in the existing patent with the publication number CN210792367U, the disclosed "borderless scratch-proof PET protective film, including an electrostatic adsorption layer, a TPU elastic rubber layer is fixedly connected to the top of the electrostatic adsorption layer, and a PET protective film is fixedly connected to the side of the TPU elastic rubber layer away from the electrostatic adsorption layer", it can be seen that what is described in this application is exactly a common PET protective film;

[0003] However, before the actual use of the existing PET protective film, due to the lack of a corresponding detachable warpage-proof structure, the PET protective film may be warped due to external forces during storage and transportation, affecting the subsequent adhesion of the PET protective film to the mobile phone display screen, and at the same time reducing the service life of the PET protective film in the later stage. Therefore, the present utility model proposes a warpage-proof PET protective film. Content of the Utility Model

[0004] The purpose of the present utility model is to provide a warpage-proof PET protective film to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present utility model provides the following technical solution: a warpage-proof PET protective film, including a PET protective film main body, the PET protective film main body includes a protective layer, a base material layer and a release layer, the base material layer is arranged between the protective layer and the release layer, and the base material layer includes a hardening layer, a PET base layer and an adhesive layer;

[0006] It further includes a detachable warpage-proof structure installed on the surface of the PET protective film main body, the detachable warpage-proof structure includes two U-shaped protection strips and four connecting strips, the two U-shaped protection strips are respectively sleeved on the two side edges of the PET protective film main body, the four connecting strips are arranged between the two U-shaped protection strips, and the PET protective film main body is also located between the four connecting strips. An anti-slip rubber pad is further installed on the inner side of the U-shaped protection strip, and the anti-slip rubber pad is closely attached to the edge of the PET protective film main body.

[0007] Preferably, the hardening layer is arranged on the top of the PET base layer, and the adhesive layer is arranged on the bottom of the PET base layer.

[0008] Preferably, the release layer is attached below the adhesive layer.

[0009] Preferably, the protective layer includes an elastic silica gel layer and a polypropylene film layer. The elastic silica gel layer is disposed on the top of the hardening layer, and the polypropylene film layer is disposed on the top of the elastic silica gel layer.

[0010] Preferably, an active structure is provided between the connecting strip and the U-shaped protective strip. The active structure includes an inner sliding groove, an inner sliding block, and a connecting block. Inner sliding grooves are formed inside both ends of the connecting strip. The inner sliding block is slidably disposed in the inner sliding groove. A connecting block is fixed to one side of the inner sliding block, and one end of the connecting block extends to the end surface of the connecting strip and is fixed to the U-shaped protective strip.

[0011] Preferably, through holes communicating with the inner sliding groove are formed on the surfaces of both ends of the connecting strip, and the through holes correspond to the connecting blocks.

[0012] Preferably, two integral T-shaped blocks are provided on the surface of the anti-slip rubber pad. T-shaped grooves corresponding to the T-shaped blocks are formed on the inner wall of the U-shaped protective strip. The T-shaped blocks are embedded in the T-shaped grooves.

[0013] Preferably, a strip-shaped hole is formed through the top surface of the PET protective film body.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: By improving and optimizing the existing PET protective film, a detachable anti-warping structure is designed on it, which can effectively restrain and protect the PET protective film body during the storage and transportation of the PET protective film, prevent the PET protective film body from warping due to external forces during storage and transportation, ensure the normal pasting of the subsequent PET protective film body, and at the same time, a hardening layer and a protective layer are designed, which can extend the service life of the PET protective film and prevent the PET protective film from warping during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of the present utility model;

[0016] Figure 2 is a bottom view sectional view of the present utility model;

[0017] Figure 3 is a sectional view of the PET protective film body of the present utility model;

[0018] Figure 4 is the present utility model Figure 2 is a partial enlarged view of area A in;

[0019] In the figure: 1. PET protective film main body; 11. Protective layer; 111. Elastic silicone layer; 112. Polypropylene film layer; 12. Substrate layer; 121. Hardening layer; 122. PET base layer; 123. Adhesive layer; 13. Release layer; 2. Detachable anti-warping structure; 21. U-shaped protection strip; 211. T-shaped groove; 22. Connecting strip; 23. Anti-slip rubber pad; 231. T-shaped clamping block; 24. Inner sliding groove; 25. Inner sliding block; 26. Connecting block; 3. Strip-shaped hole. Detailed implementation manner

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1

[0022] Please refer to Figures 1 to 3 , which is the first embodiment of the present invention. This embodiment provides a technical solution: an anti-warping PET protective film, including a PET protective film main body 1. The PET protective film main body 1 includes a protective layer 11, a substrate layer 12 and a release layer 13. The substrate layer 12 is arranged between the protective layer 11 and the release layer 13. The substrate layer 12 includes a hardening layer 121, a PET base layer 122 and an adhesive layer 123;

[0023] It further includes a detachable anti-warping structure 2 installed on the surface of the PET protective film main body 1. The detachable anti-warping structure 2 includes two U-shaped protection strips 21 and four connecting strips 22. The U-shaped protection strips 21 and the connecting strips 22 are both made of polyethylene. The two U-shaped protection strips 21 are respectively sleeved on the two side edges of the PET protective film main body 1. The four connecting strips 22 are arranged between the two U-shaped protection strips 21, and the PET protective film main body 1 is also between the four connecting strips 22. An anti-slip rubber pad 23 is further installed on the inner side of the U-shaped protection strip 21. The anti-slip rubber pad 23 is in close contact with the edge of the PET protective film main body 1. There is an activity structure between the connecting strip 22 and the U-shaped protection strip 21. The activity structure includes an inner sliding groove 24, an inner sliding block 25 and a connecting block 26. Inner sliding grooves 24 are respectively opened at both ends inside the connecting strip 22. Inner sliding blocks 25 are slidably arranged in the inner sliding grooves 24. A connecting block 26 is fixed on one side of the inner sliding block 25, and one end of the connecting block 26 extends to the end surface of the connecting strip 22 and is fixed to the U-shaped protection strip 21, so that the subsequent U-shaped protection strip 21 can be pulled laterally and removed from the surface of the PET protective film main body 1.

[0024] Among them, the hardened layer 121 is provided on the top of the PET base layer 122 for enhancing the hardness of the base material layer 12. The hardened layer 121 is a UV-cured coating (a mixture of polyurethane methacrylate, etc.). The adhesive layer 123 is provided at the bottom of the PET base layer 122 for the subsequent smooth application of the base material layer 12 on the display screen of an external electronic device. The adhesive layer 123 is an aqueous polyurethane adhesive.

[0025] Among them, the release layer 13 is attached below the adhesive layer 123, and the release layer 13 can be torn off subsequently to achieve the normal installation of the PET protective film.

[0026] Among them, the protective layer 11 includes an elastic silicone layer 111 and a polypropylene film layer 112. The elastic silicone layer 111 is provided on the top of the hardened layer 121, and the polypropylene film layer 112 is provided on the top of the elastic silicone layer 111.

[0027] Among them, through holes communicating with the inner sliding groove 24 are formed on both end surfaces of the connecting strip 22, and the through holes correspond to the connecting blocks 26 for the smooth penetration of the connecting blocks 26.

[0028] Among them, a strip-shaped hole 3 is formed through the top surface of the PET protective film main body 1.

[0029] In summary, during the storage and transportation of the PET protective film main body 1, the operator can first pull the two U-shaped protective strips 21 apart forcefully to separate the U-shaped protective strips 21 from the connecting strip 22, then insert the PET protective film main body 1 between the four connecting strips 22, and then push the two U-shaped protective strips 21 back so that the two U-shaped protective strips 21 can be sleeved on both side edges of the PET protective film main body 1, and the anti-slip rubber pads 23 are closely attached to the edge of the PET protective film main body 1. In this way, the U-shaped protective strips 21 and the connecting strip 22 can effectively restrain and protect the PET protective film main body 1, prevent the PET protective film main body 1 from warping due to external force during transportation and storage, and ensure the normal installation of the subsequent PET protective film main body 1. When the PET protective film main body 1 needs to be normally installed subsequently, only need to pull the U-shaped protective strips 21 apart from the connecting strip 22 again to separate the U-shaped protective strips 21 from the edge of the PET protective film main body 1, then the PET protective film main body 1 can be easily taken out from between the four connecting strips 22, then tear off the release layer 13, and attach the PET protective film main body 1 to the display screen of the external electronic device through the adhesive layer 123 for normal use.

[0030] Embodiment 2

[0031] Please refer to Figures 1 to 4, which is the second embodiment of the present utility model. This embodiment is based on the previous embodiment. The difference is that two integral T-shaped blocks 231 are provided on the surface of the anti-slip rubber pad 23. Both of them are made of silica gel material and will undergo elastic deformation when squeezed. Two T-shaped grooves 211 corresponding to the T-shaped blocks 231 are opened on the inner wall of the U-shaped protection strip 21. The T-shaped blocks 231 are embedded into the T-shaped grooves 211, so that the anti-slip rubber pad 23 can be smoothly installed inside the U-shaped protection strip 21.

[0032] Although the embodiments of the present utility model have been shown and described (see the above detailed description), for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A warping-resistant PET protective film, comprising a PET protective film body (1), wherein the PET protective film body (1) comprises a protective layer (11), a substrate layer (12) and a release layer (13), wherein the substrate layer (12) is arranged between the protective layer (11) and the release layer (13), and wherein: The substrate layer (12) comprises a hardening layer (121), a PET base layer (122) and an adhesive layer (123); The invention also comprises a detachable anti-warping structure (2) installed on the surface of the PET protective film body (1), wherein the detachable anti-warping structure (2) comprises two U-shaped protective strips (21) and four connecting strips (22), wherein the two U-shaped protective strips (21) are respectively sleeved on the two side edges of the PET protective film body (1), the four connecting strips (22) are arranged between the two U-shaped protective strips (21), and the PET protective film body (1) is also located between the four connecting strips (22), and an anti-skid rubber pad (23) is also installed on the inner side of the U-shaped protective strip (21), and the anti-skid rubber pad (23) is tightly attached to the edge of the PET protective film body (1).

2. The anti-warping PET protective film according to claim 1, characterized in that: The hardening layer (121) is arranged on the top of the PET base layer (122), and the adhesive layer (123) is arranged on the bottom of the PET base layer (122).

3. The anti-warping PET protective film according to claim 1, characterized in that: The release layer (13) is attached below the adhesive layer (123).

4. The anti-warping PET protective film according to claim 1, characterized in that: The protective layer (11) comprises an elastic silicone layer (111) and a polypropylene film layer (112); the elastic silicone layer (111) is arranged on top of the hardening layer (121); and the polypropylene film layer (112) is arranged on top of the elastic silicone layer (111).

5. The anti-warping PET protective film according to claim 1, characterized in that: A movable structure is provided between the connecting strip (22) and the U-shaped protective strip (21), and the movable structure comprises an inner slide groove (24), an inner slider (25) and a connecting block (26). Inner slide grooves (24) are provided inside both ends of the connecting strip (22), an inner slider (25) is slidably provided inside the inner slide groove (24), a connecting block (26) is fixed on one side of the inner slider (25), and one end of the connecting block (26) extends to the end surface of the connecting strip (22) and is fixed to the U-shaped protective strip (21).

6. The anti-warping PET protective film according to claim 5, characterized in that: Through holes communicating with the inner slide groove (24) are provided on both end surfaces of the connecting strip (22), and the through holes correspond to the connecting blocks (26).

7. The anti-warping PET protective film according to claim 1, characterized in that: The surface of the anti-slip rubber pad (23) is provided with two integrated T-shaped blocks (231), the inner wall of the U-shaped protection strip (21) is provided with two T-shaped grooves (211) corresponding to the T-shaped blocks (231), and the T-shaped blocks (231) are embedded in the T-shaped grooves (211).

8. The anti-warping PET protective film according to claim 1, characterized in that: The top surface of the PET protective film body (1) is penetrated by a strip-shaped hole (3).

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