PET (Polyethylene Terephthalate) silica gel protective film capable of conveniently discharging bubbles
By setting venting grooves and connection holes at the bottom of the substrate layer of the PET silicone protective film, the problem of air bubbles being difficult to expel during installation is solved, enabling convenient air bubble removal and improving the installation effect of the protective film and the clarity of the screen display.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-03-06
AI Technical Summary
Air bubbles generated during the installation of PET silicone protective film are difficult to remove effectively, affecting appearance and adhesion, especially impacting display clarity on high-definition display screens.
A straight, equidistant venting groove and connection hole are set at the bottom of the PET substrate layer. After the protective film is applied to the screen surface through the silicone coating, it is pressed to allow air bubbles to enter the venting groove and be discharged through the connection hole. The design of the venting groove and connection hole enables the effective discharge of air bubbles.
It enables the easy removal of air bubbles during installation, improves the appearance and adhesion of the protective film, and ensures the clarity of the screen display.
Smart Images

Figure CN223974031U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PET silicone protective film technology, specifically a PET silicone protective film that facilitates the removal of air bubbles. Background Technology
[0002] PET silicone protective film is a protective film made of polyester film (PET) and silicone material. It is commonly used to protect the surfaces of various devices or products, such as mobile phone screens, electronic devices, glasses, etc., to prevent scratches, stains and other damage. This protective film is characterized by wear resistance, high transparency and easy cleaning, which can extend the product's life and maintain a clear appearance.
[0003] Bubbles may form during the installation of PET silicone protective film. These bubbles are usually caused by air or liquid trapped between the film and the surface. If the bubbles cannot be expelled and there are a large number of bubbles, it may affect the appearance and adhesion of the protective film. At the same time, the bubbles may affect the clarity of the screen display and reduce the viewing experience to some extent, especially when using devices with high-definition display screens. Utility Model Content
[0004] The purpose of this invention is to provide a PET silicone protective film that facilitates the removal of air bubbles. It has the advantage of making it easy for workers to remove the air generated during the installation of the protective film, thus solving the problem that it is inconvenient for workers to remove air bubbles generated during the installation of PET silicone protective film.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a PET silicone protective film that facilitates the removal of air bubbles, comprising a protective film body, wherein the protective film body is composed of a silicone coating, a PET substrate layer, a scratch-resistant layer, an anti-bubble layer, an anti-fingerprint coating, and a protective film.
[0006] Preferably, the PET substrate layer is located above the silicone coating.
[0007] Preferably, the scratch-resistant layer is located above the PET substrate layer.
[0008] Preferably, the anti-bubble layer is located above the anti-scratch layer.
[0009] Preferably, the anti-fingerprint coating is located above the anti-bubble layer.
[0010] Preferably, the protective film is located above the anti-fingerprint coating.
[0011] Preferably, the bottom of the PET substrate layer has venting grooves spaced in a straight line, and connecting holes are provided between adjacent venting grooves. The venting grooves extend through the front and rear sides of the PET substrate layer.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention features a PET substrate layer, venting grooves, and connecting holes. After the protective film body is attached to the screen surface with a silicone coating, pressing the protective film body causes air bubbles generated between the protective film body and the screen to enter the venting grooves of the PET substrate layer. The gas inside adjacent venting grooves moves between each other through the connecting holes, and the air is discharged from both ends of the venting grooves, thus facilitating the removal of air generated during the installation of the protective film body. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the protective film body structure of this utility model;
[0015] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0016] In the diagram: 1. Silicone coating; 2. PET substrate layer; 3. Scratch-resistant layer; 4. Anti-bubble layer; 5. Anti-fingerprint coating; 6. Protective film; 7. Venting groove; 8. Connection hole; 9. Protective film body. Detailed Implementation
[0017] 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.
[0018] 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.
[0019] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0021] Example 1
[0022] like Figures 1-2As shown, this utility model proposes a PET silicone protective film for easy air bubble removal, comprising a protective film body 9. The protective film body 9 is composed of a silicone coating 1, a PET substrate layer 2, a scratch-resistant layer 3, an anti-bubble layer 4, an anti-fingerprint coating 5, and a protective film 6. The PET substrate layer 2 is located above the silicone coating 1. The PET substrate layer 2 uses PET (polyethylene terephthalate) or TPU (thermoplastic polyurethane) as the base material, which has good flexibility and wear resistance. The silicone coating 1 has adsorption force, which can fix the film to the surface of the equipment without leaving obvious residue. The scratch-resistant layer 3 is located above the PET substrate layer 2. The scratch-resistant layer 3 is used to improve the surface hardness of the protective film and prevent scratches during daily use. It is usually made of a material similar to polycarbonate (PC). Alternatively, a glass-like material can be used. The anti-bubble layer 4 is located above the scratch-resistant layer 3. The anti-bubble layer 4 is used to prevent bubbles from forming during installation, ensuring the flatness and clarity of the installation. The anti-fingerprint coating 5 is located above the anti-bubble layer 4. The anti-fingerprint coating 5 is a special coating used to reduce the adhesion of fingerprints and oil stains, keeping the screen clean. The protective film 6 is located above the anti-fingerprint coating 5. The protective film 6 provides protection and prevents the surface of the protective film body 9 from being scratched during storage. The bottom of the PET substrate layer 2 has equidistant, straight venting grooves 7. Connecting holes 8 are provided between adjacent venting grooves 7. The venting grooves 7 penetrate through the front and rear sides of the PET substrate layer 2, allowing air at the bottom of the PET substrate layer 2 to be discharged from the venting grooves 7. The air between the venting grooves 7 can circulate with each other.
[0023] Working principle: After the protective film body 9 is attached to the screen surface through the silicone coating 1, press the protective film body 9. The air bubbles generated between the protective film body 9 and the screen enter the venting groove 7 of the PET substrate layer 2. The gas inside the adjacent venting groove 7 moves to each other through the connecting hole 8. The air is discharged from the front and rear ends of the venting groove 7. After installation, peel off the protective film 6.
[0024] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, 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, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A PET silicone protective film with convenient bubble discharge, comprising a protective film body (9), characterized in that: The protective film body (9) is composed of a silica gel coating (1), a PET substrate layer (2), a scratch-proof layer (3), an anti-bubble layer (4), a fingerprint-proof coating (5) and a protective film (6).
2. The PET silicone protective film according to claim 1, wherein: The PET substrate layer (2) is located above the silica gel coating (1).
3. The PET silicone protective film according to claim 1, wherein: The scratch-proof layer (3) is located above the PET substrate layer (2).
4. The PET silicone protective film according to claim 1, wherein: The anti-bubble layer (4) is located above the scratch-proof layer (3).
5. The PET silicone protective film according to claim 1, wherein: The fingerprint-proof coating (5) is located above the anti-bubble layer (4).
6. The PET silicone protective film of claim 1, wherein: The protective film (6) is located above the fingerprint-proof coating (5).
7. The PET silicone protective film of claim 1, wherein: The bottom of the PET substrate layer (2) is linearly and equidistantly provided with exhaust grooves (7), and connecting holes (8) are arranged between adjacent exhaust grooves (7), and the exhaust grooves (7) penetrate through the front and back sides of the PET substrate layer (2).