Cuttable protective film

Abstract

The utility model discloses a cuttable protective film which comprises a base material layer, a first hardening buffer layer and a second hardening buffer layer are respectively attached to the upper surface and the lower surface of the base material layer, a buffer rubber layer is attached to the lower surface of the second hardening buffer layer, a first release film layer is attached to the upper surface of the first hardening buffer layer, and a second release film layer is attached to the lower surface of the second hardening buffer layer. And a second release film layer is attached to the lower surface of the buffer rubber layer. The protective film has relatively high hardness and a remarkable buffering effect, and effectively solves the problems of cutter breakage, abrasion and the like of a cutter for cutting.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of protection film, especially to a cuttable protection film. BACKGROUND

[0002] With the continuous development of information industry, people use information products more and more, and protection film is widely used in the display screen of various electronic products to protect the display screen. Most people use smart phones, tablets and computers with large screens. The screen of the electronic product is more likely to collide and scratch in daily use. Therefore, many people will choose to paste a protection film on the electronic screen. The appearance of cutting machine and cutting size film can be conveniently and quickly applied to the protection of various models of mobile phones / tablets / computers and other electronic screens.

[0003] The cutting machine on the market mainly cuts soft film and cannot cut film pieces with high hardness. Soft film is prone to scratches or nail prints during use, which greatly affects the use experience. If the consumer needs a high-hardness film piece, they can only purchase a hardening film of a certain model. However, for merchants, they need to stock many models of films. The appearance of a high-hardness cutting film only needs to cut the high-hardness protection film. However, when cutting the high-hardness protection film, the hardness of the protection film is large, which can easily cause the cutting tool to break and wear. UTILITY MODEL CONTENT

[0004] In view of the defects of the prior art, the utility model provides a cuttable protection film to prevent the cutting tool from breaking and wearing.

[0005] The utility model adopts the following technical scheme:

[0006] A cuttable protection film includes a substrate layer, a first hardened buffer layer and a second hardened buffer layer are attached to the upper and lower surfaces of the substrate layer respectively, a buffer adhesive layer is attached to the lower surface of the second hardened buffer layer, a first release film layer is attached to the upper surface of the first hardened buffer layer, and a second release film layer is attached to the lower surface of the buffer adhesive layer.

[0007] Further, the thickness of the first hardened buffer layer and the second hardened buffer layer is the same.

[0008] Further, the thickness of the first hardened buffer layer and the second hardened buffer layer is 5-40um.

[0009] Further, the hardness of the first hardened buffer layer is higher than that of the second hardened buffer layer.

[0010] Further, the first hardening buffer layer is a high-slip hardening buffer layer or a frosted high-hardening buffer layer or an AR anti-reflection high-hardening buffer layer.

[0011] Further, the thickness of the buffer adhesive layer is 150-280um.

[0012] Further, the thickness of the substrate layer is 50-200um.

[0013] Further, the buffer adhesive layer is pure glue or composite glue, wherein the pure glue is acrylic glue or silica gel or PU glue, and the composite glue is transparent AB / AA glue, or the composite glue is blue light AB / AA glue, or the composite glue is anti-peep AB / AA glue.

[0014] Further, the substrate layer is a non-Newton ring polyethylene terephthalate plastic.

[0015] Further, the first release film layer is a single-layer PET material or a PE material or a PVC material or a CPP material with a thickness of 50-200um, or the first release film layer is a composite terephthalate plastic with a thickness of 100-300um; and the second release film layer is a single-layer PET material or a PE material or a PVC material or a CPP material, or the second release film layer is a composite material.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects:

[0017] The utility model discloses a substrate layer is provided with first hardening buffer layer and second hardening buffer layer on the upper and lower surfaces respectively, so that the protective film has a surface with high hardness and certain buffering effect, and when cutting the protective film, the first hardening buffer layer and the second hardening buffer layer can buffer the cutting tool, avoid the cutting tool from breaking and wearing, and the surface of the cut finished film will not be broken. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the schematic diagram of the cuttable protective film of the utility model embodiment;

[0019] In the drawing: 1, first release film layer;2, first hardening buffer layer;3, substrate layer;4, second hardening buffer layer;5, buffer adhesive layer;6, second release film layer. DETAILED DESCRIPTION

[0020] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept to those skilled in the art. Like reference numbers in different drawings identify like or similar elements, and thus descriptions of the same may be simplified or omitted from one figure to another.

[0021] The words expressing position and direction described in the present application are illustrated by taking the drawings as an example, but changes can also be made as needed, and the changes made are included in the protection scope of the present application.

[0022] As Figure 1 As shown, the application provides a cuttable protective film, which comprises a substrate layer 3, a first hardening buffer layer 2 and a second hardening buffer layer 4 are respectively attached to the upper and lower surfaces of the substrate layer 3, a buffer rubber layer 5 is attached to the lower surface of the second hardening buffer layer 4, a first release film layer 1 is attached to the upper surface of the first hardening buffer layer 2, and a second release film layer 6 is attached to the lower surface of the buffer rubber layer 5.

[0023] In the present embodiment, by respectively arranging the first hardening buffer layer 2 and the second hardening buffer layer 4 on the upper and lower surfaces of the substrate layer 3, the protective film has a surface with high hardness and also has a certain buffering effect. When cutting the protective film, the first hardening buffer layer 2 and the second hardening buffer layer 4 can buffer the cutting tool to avoid breakage and wear of the cutting tool. By arranging the buffer rubber layer 5, the entire protective film can have a very strong impact absorbing capacity and can effectively resist violent impact and extrusion. By arranging the first release film layer 1 and the second release film layer 6, the protective film can be well protected. When in use, the second release film layer 6 is first torn open, and then the first release film layer 1 is torn open, so that the protective film can be quickly and efficiently attached to the electronic screen.

[0024] Among them, the first hardening buffer layer 1, the second hardening buffer layer 4 and the substrate layer 3, the buffer rubber layer 5 and the second hardening buffer layer 4, the first release film layer 1 and the first hardening buffer layer 2, and the second release film layer 6 and the buffer rubber layer 5 can be firmly attached by the conventional laminating process of coating adhesive or hot pressing.

[0025] As a preferred embodiment, the thickness of the first hardening buffer layer 2 and the second hardening buffer layer 4 is the same.

[0026] As a preferred embodiment, the thickness of the first hardening buffer layer 2 and the second hardening buffer layer 4 is 5-40um. Experiments show that the surface hardness of the first hardening buffer layer 2 and the second hardening buffer layer 4 in the embodiment can reach 3H-10H, and the hardness test result is obtained according to the "GB6739-86 Film Hardness Pencil Test Method".

[0027] As a preferred embodiment, the hardness of the first hardening buffer layer 2 is higher than the hardness of the second hardening buffer layer 4.

[0028] As a preferred embodiment, the first hardening buffer layer 2 is a high-slip hardening buffer layer or a frosted high-hardening buffer layer or an AR anti-reflection high-hardening buffer layer.

[0029] In the embodiment, the first hardening buffer layer 2 is a high-slip hardening buffer layer, so that the protective film has good slip feeling and good anti-oil effect, and when using electronic products, the slip degree of the screen surface is improved, and the use experience is enhanced. In a special wear tester, the protective film can be worn for more than 5000 times, and still maintain high water drop angle and slip degree. The processing method of the first hardening buffer layer 2 and the second hardening buffer layer 4 is that the upper and lower surfaces of the substrate layer 3 are first pre-coated to make the surface be able to be coated with the prepared hardening liquid, the lower surface is coated with a low-hardness hardening liquid, and the upper surface is coated with a high-hardness slip liquid, and then the light is cured to be evenly coated. In this way, the first hardening buffer layer 2 and the second hardening buffer layer 4 are respectively formed on the upper and lower surfaces of the substrate layer 3. Since the upper surface is coated with a high-hardness slip liquid, the protective film has a slip high-hardness surface and good flatness. The hardening layer formed by the selected hardening liquid has a buffering effect and high buffering property to impact force, so that the problem of rupture and wear during cutting by a cutter can be prevented, and the surface of the cut finished film will not be broken.

[0030] As a preferred embodiment, the thickness of the buffer adhesive layer 5 is 150-280um. In this way, the buffer adhesive layer 5 has a better buffering effect.

[0031] As a preferred embodiment, the thickness of the substrate layer 3 is 50-200um. In this way, a reliable thickness is provided and a better supporting effect is achieved. As a preferred embodiment, the buffer adhesive layer 5 uses pure glue or composite glue. The pure glue is acrylic glue or silicone glue or PU glue. The composite glue is transparent AB / AA glue, or the composite glue is blue light AB / AA glue, or the composite glue is anti-peep AB / AA glue.

[0032] In this embodiment, the buffer adhesive layer 5 can make the entire protective film have very strong impact absorption capacity, can effectively resist violent impact and extrusion, and is resistant to bending, and mainly resists external force to prevent screen burst, so the buffer adhesive layer 5 can adopt acrylic glue or silicone glue or PU glue with good buffer performance, and can achieve good impact buffering when the cutting machine cuts down. Of course, the buffer adhesive layer 5 can also be a composite adhesive, which is transparent AB / AA adhesive, or blue light AB / AA adhesive, or anti-peep AB / AA adhesive, so as to meet diversified needs.

[0033] As a preferred embodiment, the substrate layer 3 adopts a Newton ring-free polyterephthalic plastic. Of course, in other embodiments, the substrate layer 3 can also be PC material or PMMA material.

[0034] As a preferred embodiment, the first release film layer 1 is single-layer PET material or PE material or PVC material or CPP material, and the thickness is 50-200um, or the first release film layer 1 is a composite terephthalic plastic, and the thickness is 100-300um; the second release film layer 6 is single-layer PET material or PE material or PVC material or CPP material, or the second release film layer 6 is a composite material. The first release film layer 1 of this embodiment is single-layer PET material or PE material or PVC material or CPP material or a composite terephthalic plastic, which has excellent wear resistance, friction resistance, dimensional stability and electrical insulation, of course, in other embodiments, the first release film layer 1 can also be other materials, such as PE+PET, PVC+PET, CPP+PET, PET+PET and the like. In other embodiments, the second release film layer 6 can also be a composite material, which can be AB glue+PET, AB glue+PVC and the like, and the thickness is 50-300um.

[0035] In addition, the hardness of the protective film is tested, wherein the Newton ring-free polyterephthalic plastic with a thickness of 125um is selected, a 30um hardening buffer layer is coated on the upper and lower surfaces of the Newton ring-free polyterephthalic plastic, and a film piece with a 180um buffer adhesive layer 5 is tested, the film piece has good scratch resistance, a pencil hardness tester is used for testing, the hardness of the film piece can reach 9H, and the scratch in daily life does not affect the film piece, so that the use cycle of the film piece can be prolonged, and the number of film replacement can be reduced. And it will not leave a concave point and uneven feeling like TPU film, and maintain good experience. And 200 film pieces are cut for cutter wear test, the cut film pieces are intact, and the cutter is still sharp.

[0036] Therefore, the cuttable protective film has a surface with high hardness and certain buffering effect, and the buffering effect is obvious when the protective film is hit or collided, so that the cutter can be prevented from breaking and wearing when the protective film is cut by the cutting machine, and the surface of the cut finished film will not be broken.

[0037] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model, and all these changes should belong to the protection scope of the utility model claim.

Claims

1. A cuttable protective film, characterized by, The application relates to a laminated film, which comprises a substrate layer (3), a first hardened buffer layer (2) and a second hardened buffer layer (4) respectively attached to the upper and lower surfaces of the substrate layer (3), a buffer glue layer (5) attached to the lower surface of the second hardened buffer layer (4), a first release film layer (1) attached to the upper surface of the first hardened buffer layer (2), and a second release film layer (6) attached to the lower surface of the buffer glue layer (5).

2. The cuttable protective film according to claim 1, characterized by The first hardened buffer layer (2) and the second hardened buffer layer (4) have the same thickness.

3. The cuttable protective film according to claim 1, characterized by The first hardened buffer layer (2) and the second hardened buffer layer (4) have a thickness of 5-40 um.

4. The cuttable protective film according to claim 1, characterized by The hardness of the first hardened buffer layer (2) is higher than that of the second hardened buffer layer (4).

5. The cuttable protective film according to claim 1, wherein The first hardened buffer layer (2) is a high-slip hardened buffer layer, a frosted high-hardened buffer layer or an AR anti-reflection high-hardened buffer layer.

6. The cuttable protective film according to claim 1, characterized by The thickness of the buffer glue layer (5) is 150-280 um.

7. The cuttable protective film according to claim 1, characterized by The thickness of the substrate layer (3) is 50-200 um.

8. The cuttable protective film according to claim 1, characterized by The buffer glue layer (5) is made of pure glue or composite glue, wherein the pure glue is acrylic glue, silicon glue or PU glue, the composite glue is transparent AB / AA glue, or the composite glue is blue light AB / AA glue, or the composite glue is anti-peep AB / AA glue.

9. The cuttable protective film according to claim 1, wherein The substrate layer (3) is made of non-Newton ring polyterephthalic plastic.

10. The cuttable protective film according to claim 1, characterized by The first release film layer (1) is made of single-layer PET material, PE material, PVC material or CPP material, and has a thickness of 50-200 um, or the first release film layer (1) is made of composite terephthalic plastic, and has a thickness of 100-300 um; the second release film layer (6) is made of single-layer PET material, PE material, PVC material or CPP material, or the second release film layer (6) is made of composite material.

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