Screen protection composite film

Abstract

The utility model discloses a screen protection composite film which comprises an APET film, a PET / PA co-extrusion film and a TPU antistatic surface coating, the APET film and the TPU antistatic surface coating are respectively arranged on two sides of the PET / PA co-extrusion film, and the thickness of the APET film is larger than that of the TPU antistatic surface coating. Compared with the prior art, the screen protection composite film has the following beneficial effects that the screen protection composite film is attached to a screen in an electrostatic adsorption manner, can be repeatedly pasted, is still stable after being pasted again, and can be thermally repaired when scratches appear on the surface of the composite film.

Description

Technical Field

[0001] This utility model relates to the field of packaging film materials, and in particular to a screen protection composite film. Background Technology

[0002] Currently, many electronic devices use screen protectors. Patent publication CN203680942U discloses a protective film that can be used on electronic screens. The main structure of this protective film is a PET film with a light-filtering coating. One side of the PET film is coated with adhesive. When applying the film, the PET film is adhered to the screen using the adhesive. Because it is adhered by adhesive, if it is not adhered well the first time and the entire film needs to be peeled off and reapplied, it is easy to cause adhesive residue on the screen, making it difficult to adhere stably again. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes a screen protection composite film that adheres to the screen via electrostatic adsorption. It can be reapplied multiple times and remains stable after reapplication. Furthermore, scratches on the surface of the composite film can be repaired by heat.

[0004] The technical solution adopted by this utility model is as follows:

[0005] A screen protection composite film includes an APET film (PET antistatic film), a PET / PA co-extruded film, and a TPU antistatic surface coating. The APET film and the TPU antistatic surface coating are respectively disposed on both sides of the PET / PA co-extruded film, and the thickness of the APET film is greater than the thickness of the TPU antistatic surface coating.

[0006] In this type of screen protector composite film, the APET film is used for electrostatic adsorption to the screen. Because the APET film adheres to the screen through electrostatic adsorption, it can be reused and re-attached no matter how many times it is peeled off. Meanwhile, in this screen protector composite film, while the APET film is used for bonding to the screen, the TPU antistatic coating is used for contact with the user's hands. The presence of the TPU antistatic coating gives the entire film surface excellent fingerprint resistance. Furthermore, because TPU has a certain degree of heat-melting properties, when the TPU antistatic coating is scratched due to contact with sharp objects, when the ambient temperature or the temperature of the TPU antistatic coating reaches 40℃~60℃ during the use of electronic devices, the physical cross-linking network loosens, and the molecular chains migrate to fill the scratches, thus achieving damage repair with high reliability. If scratches occur, a hair dryer can be used to blow them away, thereby repairing the surface scratches.

[0007] In summary, this composite film adheres to the screen via electrostatic adsorption, can be reapplied multiple times, and remains stable after reapplied. Scratches on the surface of the composite film can be repaired by heat.

[0008] In this type of composite film, the PET / PA co-extruded film has good rigidity and support, which can give the entire composite film good impact resistance.

[0009] Optionally, it may also include a first adhesive layer disposed between the TPU antistatic surface coating and the PET / PA co-extruded film.

[0010] The function of the first adhesive layer is to bond the materials together.

[0011] Optionally, the thickness of the first adhesive layer is 1 micrometer to 2 micrometers.

[0012] Optionally, a second adhesive layer is also included, which is disposed between the APET film and the PET / PA co-extruded film.

[0013] The second adhesive layer serves to bond the materials together.

[0014] Optionally, the thickness of the second adhesive layer is 1 micrometer to 2 micrometers.

[0015] Optionally, the thickness of the TPU antistatic coating is 3 micrometers to 5 micrometers.

[0016] Optionally, the thickness of the PET / PA co-extruded film is 15 micrometers to 50 micrometers.

[0017] Optionally, the thickness of the APET film is 20 micrometers to 40 micrometers.

[0018] The beneficial effects of this utility model are: it is attached to the screen by electrostatic adsorption, can be re-attached multiple times, and remains stable after re-attachment; and it can be thermally repaired when scratches appear on the surface of the composite film. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a simplified structural diagram of a screen protector.

[0021] The figures are labeled as follows: 1. TPU antistatic coating; 2. First adhesive layer; 3. PET / PA co-extruded film; 4. Second adhesive layer; 5. APET film. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0025] As attached Figure 1 As shown, a screen protection composite film includes an APET film 5 (PET antistatic film), a PET / PA co-extruded film 3, and a TPU antistatic surface coating 1. The APET film 5 and the TPU antistatic surface coating 1 are respectively disposed on both sides of the PET / PA co-extruded film 3, and the thickness of the APET film 5 is greater than the thickness of the TPU antistatic surface coating 1.

[0026] In this type of screen protector composite film, the APET film 5 is used for electrostatic adsorption to the screen. Because the APET film 5 adheres to the screen via electrostatic adsorption, it can be reused and re-attached no matter how many times it is peeled off. Simultaneously, while the APET film 5 is used for bonding to the screen, the TPU antistatic coating 1 is used for contact with the user's hands. The presence of the TPU antistatic coating 1 provides excellent fingerprint resistance to the entire film surface. Furthermore, because TPU has a certain degree of heat-melting properties, when the TPU antistatic coating 1 is scratched due to contact with a sharp object, the physical cross-linking network loosens and the molecular chains migrate to fill the scratch when the ambient temperature or the temperature of the electronic device reaches 40℃~60℃, thus achieving damage repair with high reliability. If scratches occur, a hair dryer can be used to blow them away, thereby repairing the surface scratches.

[0027] In summary, this type of composite film adheres to the screen via electrostatic adsorption, can be reapplied multiple times, and remains stable after reapplied. Scratches on the surface of the composite film can be repaired by heat.

[0028] In this type of composite film, the PET / PA co-extruded film 3 has good rigidity and support, which can give the entire composite film good impact resistance.

[0029] Specifically, in this type of composite film, the PET / PA co-extruded film 3 is the ONY6A type co-extruded film from Dalian Wansheng Packaging Products Co., Ltd.

[0030] The TPU antistatic coating 1 is coated using the 5385A type coating produced by Dongguan Jinyi New Material Technology Co., Ltd.

[0031] As attached Figure 1 As shown, it also includes a first adhesive layer 2, which is disposed between the TPU antistatic surface coating 1 and the PET / PA co-extruded film 3.

[0032] The function of the first adhesive layer 2 is to provide adhesion.

[0033] As attached Figure 1 As shown, the thickness of the first adhesive layer 2 is 1 micrometer to 2 micrometers.

[0034] As attached Figure 1 As shown, it also includes a second adhesive layer 4, which is disposed between the APET film 5 and the PET / PA co-extruded film 3.

[0035] The second adhesive layer 4 serves to bond the materials together.

[0036] As attached Figure 1 As shown, the thickness of the second adhesive layer 4 is 1 micrometer to 2 micrometers.

[0037] As attached Figure 1 As shown, the thickness of the TPU antistatic coating 1 is 3 micrometers to 5 micrometers.

[0038] As attached Figure 1 As shown, the thickness of the PET / PA co-extruded film 3 is 15 micrometers to 50 micrometers.

[0039] As attached Figure 1 As shown, the thickness of APET film 5 is 20 micrometers to 40 micrometers.

[0040] The above-described embodiments only illustrate some aspects of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A screen protector composite film, characterized in that, The material includes an APET film, a PET / PA co-extruded film, and a TPU antistatic coating layer. The APET film and the TPU antistatic coating layer are respectively disposed on both sides of the PET / PA co-extruded film, and the thickness of the APET film is greater than the thickness of the TPU antistatic coating layer.

2. The screen protection composite film according to claim 1, characterized in that, It also includes a first adhesive layer disposed between the TPU antistatic surface coating and the PET / PA co-extruded film.

3. The screen protection composite film according to claim 2, characterized in that, The thickness of the first adhesive layer is 1 micrometer to 2 micrometers.

4. The screen protection composite film according to claim 1, characterized in that, It also includes a second adhesive layer disposed between the APET film and the PET / PA co-extruded film.

5. A screen protection composite film according to claim 4, characterized in that, The thickness of the second adhesive layer is 1 micrometer to 2 micrometers.

6. The screen protection composite film according to claim 1, characterized in that, The thickness of the TPU antistatic coating is 3 to 5 micrometers.

7. The screen protection composite film according to claim 1, characterized in that, The thickness of the PET / PA co-extruded film is 15 micrometers to 50 micrometers.

8. The screen protection composite film according to claim 1, characterized in that, The thickness of the APET film is 20 micrometers to 40 micrometers.

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