Conformable occlusive film

Abstract

The application provides a fitting shielding film applied to a vehicle-mounted glass cover plate, which comprises a release film layer, a shielding film layer and a bearing film layer; the bearing film layer is arranged below the shielding film layer and is used for adsorbing and fixing the shielding film layer; the release film layer is arranged on the shielding film layer and is used for protecting the surface of the shielding film layer which is fitted with the vehicle-mounted glass cover plate; wherein the shielding film layer is a die-cutting segmented structure, and a pre-cutting and breaking pattern is arranged in the shielding film layer and corresponds to the accessory mounting area of the vehicle-mounted glass cover plate; the pre-cutting and breaking pattern is matched with the shape of the accessory, and an exhaust through hole for coating is arranged in the range of the pre-cutting and breaking pattern. The application can improve the mounting firmness of the cover plate accessory, ensure smooth exhaust during the coating process, and improve the production yield of the vehicle-mounted glass cover plate.

Description

Technical Field

[0001] This application relates to the field of automotive glass cover manufacturing technology, and more specifically, to an adhesive shielding film applied to automotive glass covers. Background Technology

[0002] Automotive cover glass is a crucial component of vehicles, significantly impacting the user experience. To achieve superior display and operational performance, automotive cover glass typically incorporates various functional coatings (including AR / AF / AG films) on its surface. These coatings provide anti-reflective, anti-fingerprint, and anti-glare properties, making it an indispensable part of automotive cover glass manufacturing.

[0003] However, some automotive glass cover panels have accessory structures, such as electronic control buttons and patch antennas. For example, Chinese patent CN201811090607.8 discloses an enhanced antenna for RFID electronic tags used in automotive glass, and discloses RFID electronic tags that can be used for coated automotive glass. These accessory structures need to be pasted and fixed to the automotive glass cover panel, so the area where they are located cannot be used to create anti-reflective and anti-fingerprint layers (AR / AF layers), and can only be covered with an anti-glare layer (AG layer). Moreover, these accessory areas also have small-sized wiring through holes, and the obstruction of these through holes can affect the venting process of the coating process, thus affecting the manufacturing yield of the automotive glass cover panel. Utility Model Content

[0004] This application provides a bonding shielding film to solve the problem in the prior art where the coating in the accessory area of ​​the vehicle glass cover affects the installation quality and manufacturing yield.

[0005] According to the present application, a bonding shielding film is applied to a vehicle glass cover plate. The bonding shielding film includes: a release film layer, a shielding film layer, and a carrier film layer. The carrier film layer is placed under the shielding film layer to adsorb and fix the shielding film layer; the release film layer is covered on the shielding film layer to protect the surface of the shielding film layer that is in contact with the vehicle glass cover. The shielding film layer has a die-cut segmented structure, and a pre-cut punched pattern is provided inside the accessory installation area corresponding to the vehicle glass cover. The pre-cut punched pattern matches the shape of the accessory, and an exhaust hole for coating is provided within the range of the pre-cut punched pattern.

[0006] In some embodiments, the pre-cut punch pattern is a circular structure that matches the button attachment on the vehicle glass cover; the exhaust hole is located at the center of the pre-cut punch pattern and is aligned with the wiring hole of the button attachment.

[0007] In some embodiments, the size of the vent hole is 3±0.15mm.

[0008] In some embodiments, the outer contour dimension of the shielding film layer is not less than the outer contour dimension of the vehicle glass cover.

[0009] In some embodiments, the carrier film layer is a complete planar structure, which is cut and manufactured at a 1:1 ratio with the shielding film layer, and the edges of the two are fitted and aligned.

[0010] In some embodiments, the shielding film layer is fabricated on the carrier film layer using a semi-die-cutting process.

[0011] In some embodiments, the carrier film layer is a PET protective film.

[0012] In some embodiments, the release film layer is a complete planar structure, and the outer contour dimension of the release film layer is larger than the outer contour dimension of the masking film layer.

[0013] In some embodiments, the release film layer is further provided with a positioning mechanism located within the outline of the release film layer that extends beyond the masking film layer.

[0014] In some embodiments, the positioning mechanism is a set of alignment through holes or a set of alignment protrusions.

[0015] Applying the technical solution of this application, the masking film can be attached to the vehicle glass cover to achieve upper protection. The masking film layer has a die-cut and segmented structure, and its interior has a pre-cut punched pattern corresponding to the accessory installation area of ​​the vehicle glass cover. The pre-cut punched pattern matches the shape of the accessory and can be retained when the masking film layer is peeled off to shield the accessory installation area and prevent the accessory installation area from being covered by the AR / AF layer during the coating process, thus ensuring the installation strength of the accessory. At the same time, the pre-cut punched pattern is also provided with vent holes to ensure smooth venting of the accessory installation area during the coating process and ensure the manufacturing yield. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A top view of the bonding shielding film according to an embodiment of this application is shown; Figure 2 It shows Figure 1 A magnified side view of the selected portion A in the bonding shielding film of the embodiment; Figure 3 This illustration shows a first state diagram of the adhesive shielding film after the release film layer is removed and it is attached to the vehicle glass cover plate according to an embodiment of this application; Figure 4 It shows in Figure 3 A schematic diagram of the second state after the outer area of ​​the shielding film layer is further peeled off; Figure 5 It shows in Figure 4 The third state diagram shows the pre-cut punched pattern after the initial state is achieved by peeling off the masking film layer. Figure 6 This diagram illustrates the final state of the automotive glass panel produced by laminating the shielding film according to an embodiment of this application.

[0019] The above figures include the following reference numerals: 10. Release film layer; 11. Alignment through hole; 20. Masking film layer; 21. Pre-cut punched pattern; 22. Exhaust through hole; 30. Bearing film layer; 40. Vehicle glass cover plate; 41. Display area; 42. Button accessories. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0022] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0023] 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. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] Figures 1 to 6 An embodiment of the masking film of this application is illustrated schematically.

[0026] refer to Figure 6 As shown, the bonding shielding film in this application embodiment is used to produce such... Figure 6 The vehicle-mounted glass cover 40 shown is suitable for use in vehicles subjected to aggressive driving. Because touchscreen operation poses safety hazards during intense racing, mechanical operating structures such as levers and buttons must be retained. Figure 6 As shown, the lower area of ​​the vehicle-mounted glass cover 40 is the lever area, and the upper area is the display area 41. The display area 41 needs to be coated with an AR / AF film to achieve anti-reflection and anti-fingerprint effects, improving the user experience. A button attachment 42 is located at the top right of the display area 41 to enable specific vehicle functions. Because the AR / AF film changes the liquid tension and repels the adhesive, it can easily cause adhesion difficulties. This application embodiment is used to solve this problem.

[0027] like Figures 1 to 6 As shown, this application discloses an adhesive shielding film applied to a vehicle glass cover 40. The adhesive shielding film includes: a release film layer 10, a shielding film layer 20, and a carrier film layer 30. (Reference) Figure 2As shown, the carrier film layer 30 is placed under the masking film layer 20, adsorbing and fixing the masking film layer 20. The release film layer 10 covers the masking film layer 20, protecting the surface of the masking film layer 20 that adheres to the vehicle glass cover plate 40. The masking film layer 20 has a die-cut segmented structure, and its interior has a pre-cut punched pattern 21 corresponding to the accessory mounting area of ​​the vehicle glass cover plate 40. The pre-cut punched pattern 21 matches the shape of the accessory of the vehicle glass cover plate, and venting holes 22 for coating are provided within the area of ​​the pre-cut punched pattern 21.

[0028] Through the above structural design, the shielding film of this application embodiment can be attached to the vehicle glass cover plate 40, providing both protection for the coating machine and shielding for accessory installation. The shielding film layer 20 has a die-cut segmented structure, with pre-cut punched patterns 21 corresponding to the accessory installation area of ​​the vehicle glass cover plate 40. The pre-cut punched patterns 21 match the shape of the accessories and can be retained when the shielding film layer 20 is peeled off during coating, thus shielding the accessory installation area and preventing it from being covered by the AR / AF layer during coating. This maintains the adhesion strength of the safe area for the accessories, ensuring a firm and reliable bond. Simultaneously, the pre-cut punched patterns 21 also have vent holes 22, ensuring smooth venting of the accessory installation area during coating and guaranteeing a high yield rate for the vehicle glass cover plate manufacturing.

[0029] Combination Figures 1 to 6 As shown, this application uses a discontinuously separated masking film layer 20 for bonding the masking film. Therefore, when the vehicle glass cover plate 40 is applied to the coating machine and the masking film layer 20 is peeled off, the pre-cut punch pattern 21 will break and remain on the vehicle glass cover plate 40, thereby preventing the accessory installation area from being covered by the AR / AF film layer, protecting the adhesion strength of this area, and ensuring the subsequent installation effect of the button accessory 42. At the same time, in order to cope with the venting action in the sputtering coating chamber, the pre-cut punch pattern 21 is provided with a venting through hole 22. The venting through hole 22 can cooperate with the wire through hole on the cover plate to achieve venting, avoiding airflow blockage that causes bubbling of the coating and masking film layers and affects the production yield.

[0030] In some embodiments of this application, such as Figures 1 to 4As shown, the pre-cut punch pattern 21 is a circular structure, matching the button attachment 42 on the vehicle glass cover 40. The vent hole 22 is located at the center of the pre-cut punch pattern 21, aligned with the wiring through-hole of the button attachment 42. During coating venting, the inert gas flow can pass through the wiring through-hole on the vehicle glass cover 40 and the vent hole 22 of the pre-cut punch pattern 21, preventing the pre-cut punch pattern 21 and the newly formed AR / AF layer from bulging and bubbling. It is understood that the pre-cut punch pattern 21 is not limited to a single shape, nor is it limited to a circle; its arrangement depends on the number and shape of the attachments and can be adjusted to suit the actual product. Furthermore, the venting process of the coating process described in this application is the inert gas flow process under existing magnetron sputtering coating processes. Under electromagnetic field excitation, plasma glow discharge occurs on the target surface. High-energy positive ions bombard the target, ejecting target molecules from the target surface and depositing them onto the glass surface to form a low-reflectivity, oil-resistant AR / AF film. During the coating process, inert gases such as argon need to be introduced into the sputtering chamber to form plasma, thus requiring an exhaust structure for the small through-holes on the cover plate. Since magnetron sputtering is an existing technology, its complete principle has already been described here; specific implementation details are not the subject of this application and will not be elaborated further.

[0031] In this embodiment of the application, in view of the wiring size requirements of the button attachment 42 of the vehicle glass cover 40, the size of the vent hole 22 in the pre-cut punch pattern 21 is set to 3±0.15mm to ensure complete fit with the wiring hole of the glass cover and to meet the venting requirements of the plate surface during the sputtering process.

[0032] In some embodiments of this application, such as Figures 1 to 4 As shown, the outer contour dimension of the shielding film layer 20 is not less than the outer contour dimension of the vehicle glass cover plate 40, so that it can completely cover the vehicle glass cover plate 40, providing protection for the coating film on the vehicle glass cover plate 40, preventing the cover plate from being scratched and contaminated, ensuring the safety of the cover plate and improving the coating effect. Figures 1 to 4 As shown, the shielding film layer 20 and the vehicle glass cover plate 40 are processed into a rounded rectangular structure with the same outer contour dimensions. Alternatively, in some other embodiments of this application, at least one apex corner of the shielding film layer 20 is set as a right angle. The right angle structure can cover the rounded chamfer of the vehicle glass cover plate 40 and hang outside, thereby facilitating the removal of the shielding film layer 20.

[0033] In some embodiments of this application, the masking film layer 20 can be a commercially available product, such as XH-005T film. Its adhesion to the vehicle glass cover plate 40 is determined based on the cover plate material and surface cleanliness requirements. Alternatively, in some embodiments of this application, the masking film layer can be a special adhesive tape product, such as a polyimide tape film layer, an aluminum foil tape film layer, or a Teflon tape film layer. Polyimide tape is amber in color and has excellent high-temperature resistance (up to 260°C or higher), chemical resistance, and low gas release, making it ideal for shielding in sputtering environments. Aluminum foil tape is made of thin aluminum foil and high-temperature resistant acrylic or silicone adhesive, combining shielding and high-temperature resistance. Teflon tape has excellent non-stick and chemical resistance, leaving virtually no residue when removed, protecting the cover plate surface from damage. The specific choice of masking film layer depends on the coating properties and the material of the vehicle glass cover plate.

[0034] In some embodiments of this application, such as Figures 1 to 4 As shown, the carrier film layer 30 is a complete planar structure, which is cut and manufactured with the shielding film layer 20 at a 1:1 ratio. The edges of the two are attached and aligned, so that the outer part of the pre-cut punched pattern 21 of the shielding film layer 20 can be peeled off together with the carrier film layer 30 when in use.

[0035] In some embodiments of this application, the masking film layer 20 is fabricated on the carrier film layer 30 using a semi-die-cutting process. Semi-die-cutting is a type of die-cutting process that allows the target face material to be cut while preserving the integrity of the backing paper. Typically, the die-cutting roller is cylindrical, and the die-cutting blade is mounted on the circumference of the die-cutting roller. By setting the gap between the die-cutting blade and the die-cutting bottom roller to the thickness of the carrier film layer 30, semi-die-cutting can be achieved, cutting only the masking film layer 20 while preserving the carrier film layer 30, facilitating automated application. By employing the semi-die-cutting process, when the release film layer 10 is peeled off, the masking film layer 20, along with the pre-cut punched pattern 21 within it, can be stably retained on the carrier film layer 30 and will not fall off due to the removal of the release film layer 10.

[0036] In some embodiments of this application, the carrier film layer 30 is a PET protective film, and its thickness and dimensions are set according to actual needs.

[0037] In some embodiments of this application, such as Figures 1 to 4 As shown, the release film layer 10 has a complete planar structure, and its outer contour dimension is larger than that of the masking film layer 20, thereby fully covering the top adhesive surface of the masking film layer 20 and facilitating release. In this embodiment, the release force between the masking film layer 20 and the release film layer 10 is 5~10g / mm.

[0038] In some embodiments of this application, such as Figure 1As shown, the release film layer 10 is also provided with a positioning mechanism, which is located within the contour range of the release film layer 10 extending beyond the masking film layer 20. In this embodiment, the positioning mechanism consists of multiple sets of alignment through holes 11. The alignment through holes 11 cooperate with the positioning posts of the bonding device, allowing the position of the bonding masking film to be accurately fixed through the alignment through holes 11, ensuring accurate alignment and bonding with the vehicle glass cover plate 40. In other embodiments of this application, the positioning mechanism may also consist of multiple sets of alignment protrusions, depending on the structure of the bonding device.

[0039] Combination Figures 1 to 4 The following diagram illustrates the working principle of this application: When applying AR / AF coating to the vehicle glass cover plate 40 with the AG layer already formed, the bonding masking film of this embodiment is bonded to the vehicle glass cover plate 40 with a bonding accuracy of 0.3±0.1mm. Specifically, the position of the masking film layer is determined and fixed by using the alignment through-hole 11 of the release film layer 10 in conjunction with the positioning post of the bonding equipment. Then, the release film layer 10 is peeled off, and the masking film layer 20 and the carrier film layer 30 are bonded together to the vehicle glass cover plate 40, as shown below. Figure 3 As shown. Under the protection of the shielding film layer 20 and the carrier film layer 30, the vehicle glass cover plate 40 is placed into the coating machine to complete the coating process. After the coating process is completed, the outer area of ​​the shielding film layer 20 is peeled off along with the carrier film layer 30, leaving only the pre-cut punched pattern 21 of the shielding film layer, which is then used to cover the accessory mounting area of ​​the vehicle glass cover plate 40, as shown. Figure 4 As shown. A coating machine is used to coat the vehicle glass cover plate 40, forming an AR / AF film layer. Then, the pre-cut punched model used for masking is removed, revealing the accessory mounting area covered only by the AG layer, as shown. Figure 5 As shown. Finally, subsequent processing is completed on the vehicle glass cover 40, and structures such as the button assembly accessory 42 are pasted and assembled, as shown. Figure 6 As shown. Due to the application of the shielding film in this application, the accessory installation area is prevented from being covered by the AR / AF film, thus protecting the adhesion strength of the area, effectively ensuring the installation firmness of the accessory, and improving the manufacturing yield of the vehicle glass cover 40.

[0040] In summary, the bonding shielding film of this application embodiment can be attached to the vehicle glass cover to achieve upper protection. The shielding film layer has a die-cut segmented structure, and its interior is provided with a pre-cut punched pattern corresponding to the accessory installation area of ​​the vehicle glass cover. The pre-cut punched pattern matches the shape of the accessory and can be retained when the shielding film layer is peeled off, so as to shield the accessory installation area and prevent the accessory installation area from being covered by the AR / AF layer during the coating process, thus ensuring the strength of its adhesion to the accessory. At the same time, the pre-cut punched pattern is also provided with vent holes, which can ensure smooth venting of the accessory area during the coating process and ensure the manufacturing yield.

[0041] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bonding shielding film, applied to vehicle glass cover plates, characterized in that, The bonding shielding film includes: a release film layer (10), a shielding film layer (20), and a carrier film layer (30); The carrier film layer (30) is placed under the shielding film layer (20) to adsorb and fix the shielding film layer (20); the release film layer (10) is covered on the shielding film layer (20) to protect the surface of the shielding film layer (20) that is in contact with the vehicle glass cover plate (40); The shielding film layer (20) is a die-cut segmented structure, and a pre-cut punch pattern (21) is provided inside the accessory installation area corresponding to the vehicle glass cover plate (40); the pre-cut punch pattern (21) matches the shape of the accessory, and an exhaust hole (22) for coating is provided within the range of the pre-cut punch pattern (21).

2. The adhesive shielding film according to claim 1, characterized in that, The pre-cut punch pattern (21) is a circular structure that matches the button attachment (42) on the vehicle glass cover (40); the exhaust hole (22) is located at the center of the pre-cut punch pattern (21) and is aligned with the wiring hole of the button attachment (42).

3. The adhesive shielding film according to claim 2, characterized in that, The size of the exhaust port (22) is 3±0.15mm.

4. The adhesive shielding film according to claim 2, characterized in that, The outer contour dimension of the shielding film layer (20) is not less than the outer contour dimension of the vehicle glass cover plate (40).

5. The adhesive shielding film according to claim 1, characterized in that, The supporting film layer (30) is a complete planar structure, which is cut and manufactured in a 1:1 ratio with the shielding film layer (20), and the edges of the two are attached and aligned.

6. The adhesive shielding film according to claim 5, characterized in that, The shielding film layer (20) is fabricated on the carrier film layer (30) by a semi-die-cutting process.

7. The adhesive shielding film according to claim 1, characterized in that, The carrier film layer (30) is a PET protective film.

8. The adhesive shielding film according to claim 1, characterized in that, The release film layer (10) has a complete planar structure, and the outer contour dimension of the release film layer (10) is larger than the outer contour dimension of the shielding film layer (20).

9. The adhesive shielding film according to claim 8, characterized in that, The release film layer (10) is further provided with a positioning mechanism, which is located within the outline range of the release film layer (10) that extends beyond the masking film layer (20).

10. The adhesive shielding film according to claim 9, characterized in that, The positioning mechanism is a set of alignment through holes (11) or a set of alignment protrusions.

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