Protective film assembly and film pasting device

Abstract

The utility model discloses a protective film assembly and a film pasting device, the protective film assembly comprises a protective film, a release film and a supporting piece, the release film is located on one side of the protective film, and the surface of the side, close to the release film, of the protective film is used for being attached to a screen of electronic equipment; the protective film comprises a main body part and an edge part, the main body part is attached to the release film, the edge part extends to the outer side of the release film from the main body part, and at least part of the supporting piece is located on the side, close to the release film, of the edge part. In the film pasting process, the supporting piece is located between the protective film and the screen of the electronic equipment, so that a gap is formed between the edge part of the protective film and the screen, bubbles between the protective film and the screen can be discharged through the gap, and the film pasting quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic product technology, and in particular to a protective film assembly and a film application device. Background Technology

[0002] With the increasing frequency of use of electronic devices such as mobile phones and tablets in people's work and life, the probability of damage has also increased accordingly. In particular, the screens of electronic devices are easily damaged by impacts with external objects or drops. At the same time, the manufacturing cost of screens is usually high. In order to reduce the risk of screen damage, users usually choose to apply a protective film to the screen surface to protect the screen.

[0003] However, if the edges of the screen protector are applied to the screen first during the application process, it will prevent air bubbles between the screen protector and the screen from escaping, thus affecting the quality of the application. Utility Model Content

[0004] In view of this, the present invention provides a protective film assembly and a film application device to solve the problem that existing protective films hinder the expulsion of air bubbles during the film application process, thereby affecting the film application quality.

[0005] On the one hand, this application provides a protective film assembly, including a protective film, a release film, and a support member, wherein the release film is located on one side of the protective film, and the surface of the protective film near the release film is used to adhere to the screen of an electronic device;

[0006] The protective film includes a main body and an edge portion. The main body is attached to the release film, and the edge portion extends from the main body to the outside of the release film. The support member is at least partially located on the side of the edge portion near the release film, and its orthographic projection along the thickness direction of the protective film is within the range of the edge portion.

[0007] In some embodiments, the support abuts against or is bonded to the edge portion.

[0008] In some embodiments, the protective film further includes an adhesive layer, the release film is bonded to the main body through the adhesive layer, and the support member is spaced apart from the adhesive layer.

[0009] In some embodiments, the protective film is a curved screen protective film, the edge portion is an arc shape that bends toward the release film side, and the support member contacts the edge portion.

[0010] In some embodiments, the protective film has mutually perpendicular length, width, and thickness directions, and the edge portion near the support member includes a connecting portion located on one side of the corresponding edge portion in the length direction, and one end of the support member is stacked with the connecting portion.

[0011] In some embodiments, in the length direction, the support extends from the outer edge of the connecting portion toward the main body by a distance that is not less than 0.2 mm and not more than 1 mm; and / or,

[0012] The dimension of the support member in the thickness direction is not less than 0.2 mm and not more than 1 mm.

[0013] In some embodiments, in the length direction, the length of the connecting portion is less than half the length of the corresponding edge portion.

[0014] In some embodiments, in the width direction, the two ends of the support member are symmetrically arranged along the central axis of the protective film, and the width of the support member is one-half to three-quarters of the width of the protective film.

[0015] In some embodiments, the protective film assembly further includes a positioning film attached to the protective film on the side away from the release film, with one end of the support member connected to the positioning film and the other end connected to the edge portion.

[0016] In some embodiments, an adhesive layer is provided on one side of the support member, and the support member is connected to the edge portion and the positioning film respectively through the adhesive layer.

[0017] In some embodiments, the area of ​​the portion where the support member is connected to the positioning film is larger than the area of ​​the portion where the support member is connected to the edge portion.

[0018] In some embodiments, one end of the support member is integrally formed with the positioning film, and the other end is connected to the edge portion by adhesive.

[0019] In some embodiments, the positioning film has a through hole, and the projection of the portion where the support member is connected to the edge portion in the thickness direction of the positioning film is located within the through hole.

[0020] In some embodiments, the support member includes a fixing portion connected to the positioning film and a support portion located at one end of the fixing portion, the end of the support portion away from the fixing portion being connected to the edge portion, and the projection of the support portion in the thickness direction of the positioning film being located within the through hole.

[0021] In some embodiments, the through hole includes a first inner wall and a second inner wall disposed opposite to each other, the first inner wall being located on one side of the fixing part and the second inner wall being located on one side of the support part, and the protective film extending from the second inner wall toward the first inner wall by a distance not greater than 5 mm.

[0022] On the other hand, this application also provides a film application device, including a film applicator and a protective film assembly as described above.

[0023] The protective film assembly provided by this utility model has a support member set on the side of the edge close to the release film. During the film application process, the support member is located between the edge of the protective film and the screen of the electronic device, so that the edge is raised relative to the screen, thereby forming a gap between the edge and the screen. This gap allows air bubbles between the protective film and the screen to be discharged during the film application process, preventing air bubbles from affecting the film application effect and improving the film application quality. After the film application is completed, the support member is removed, thus completing the film application. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a protective film assembly provided in an embodiment of the present invention;

[0025] Figure 2 for Figure 1 An exploded view of the protective film assembly shown;

[0026] Figure 3 for Figure 1 A partial structural diagram of the protective film assembly shown in the diagram when the release film is removed;

[0027] Figure 4 for Figure 2 A schematic diagram of the assembly of the protective film and adhesive layer shown in the figure;

[0028] Figure 5 for Figure 1 A cross-sectional view of the protective film assembly shown;

[0029] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0030] Figure 7 for Figure 2 A schematic diagram of the assembly of the support member and the adhesive layer described herein.

[0031] In the figure: 10, protective film assembly; 12, protective film; 14, positioning film; 16, release film; 18, positioning hole; 20, support member; 22, adhesive layer; 26, adhesive layer; 28, main body; 30, edge; 32, connecting part; 34, through hole; 36, first inner wall; 38, second inner wall. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, inside, outside, top, bottom, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship between the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] It should also be noted that when a component is referred to as "fixed to" or "set on" another component, the component may be directly on the other component or there may be an intervening component present. When a component is referred to as "connected to" another component, it may be directly connected to the other component or there may be an intervening component present.

[0035] Please see Figures 1 to 7 This utility model provides a protective film assembly 10, including a protective film 12, a positioning film 14, and a release film 16. The positioning film 14 and the release film 16 are located on opposite sides of the protective film 12, with the protective film 12 positioned between the positioning film 14 and the release film 16, thus protecting the protective film 12. The surface of the protective film 12 closest to the release film 16 is used to attach it to the screen of an electronic device, thereby protecting the screen. Both the positioning film 14 and the release film 16 can be removed from the protective film 12. When it is necessary to attach the protective film 12 to the screen, the release film 16 can be removed from the protective film 12 first. Then, the positioning film 14 is used to position the protective film 12, aligning it with the screen, and attaching the surface of the protective film 12 closest to the release film 16 to the screen. Finally, the positioning film 14 is removed from the protective film 12.

[0036] In this embodiment, the positioning film 14 is used to cooperate with the film applicator to form a positioning effect on the protective film 12. The two ends of the positioning film 14 protrude from the outer side of the protective film 12, and the two ends of the positioning film 14 are respectively provided with positioning holes 18. The positioning holes 18 can cooperate with the positioning posts on the film applicator to form a positioning effect on the protective film 12 during the film application process, so that the protective film 12 is aligned with the screen, reducing the difficulty of film application and improving the quality of film application.

[0037] In other embodiments, when the protective film assembly does not require the use of an applicator for application, the protective film assembly may not have a positioning film. In this case, the protective film assembly includes a protective film and a release film located on one side of the protective film.

[0038] The protective film 12 includes a main body portion 28 and an edge portion 30. The main body portion 28 is attached to the release film 16, and the edge portion 30 extends at least partially from the main body portion 28 to the outside of the release film 16.

[0039] The protective film 12 has an adhesive layer 26 on one side, which is located on one side of the main body 28. The release film 16 is bonded to the main body 28 through the adhesive layer 26. The release film 16 can prevent the side of the adhesive layer 26 away from the main body from being exposed, thus protecting the adhesiveness of the adhesive layer 26. After the release film 16 is removed from the adhesive layer 26, the protective film 12 can be bonded to the screen through the adhesive layer 26.

[0040] The protective film 12 is larger than the adhesive layer 26, causing the edge portion 30 to at least partially protrude beyond the adhesive layer 26. The adhesive layer 26 is a soft adhesive, such as AB glue, which can deform under pressure. When the protective film 12 is attached to the screen via the adhesive layer 26, the protective film 12 can be pressed. Under pressure, the adhesive layer 26 deforms and spreads outwards, increasing its area and decreasing its thickness. Since the edge portion 30 is at least partially located outside the adhesive layer 26, the adhesive layer 26 can spread between the edge portion 30 and the screen, allowing the edge portion 30 of the protective film 12 to also adhere to the screen, while also reducing the risk of the adhesive layer 26 overflowing between the protective film 12 and the screen. In an alternative example, the size of the adhesive layer 26 is the same as the size of the main body 28, and the edge portion 30 is entirely located outside the adhesive layer 26.

[0041] The protective film 12 can be used for both flat and curved screens. In an alternative example, the edge portion 30 is curved toward the release film 16, and the protective film 12 is used to adhere to the surface of the curved screen. The main body portion 28 is generally flat and is used to fit the flat portion of the curved screen, while the edge portion 30 is curved and is used to fit the curved portion of the edge of the curved screen.

[0042] In one embodiment, the protective film assembly 10 further includes a support member 20. The support member 20 is at least partially located on the side of the edge portion 30 near the release film 16, and its orthographic projection along the thickness direction of the protective film 12 is within the edge portion 30. This results in an overlap between the support member 20 and the protective film 12 in the thickness direction. During the process of attaching the protective film 12 to the screen after the release film 16 is removed, at least a portion of the support member 20 is located between the protective film 12 and the screen, which serves to support the protective film 12. This causes the edge portion 30 of the protective film 12 to be raised relative to the screen, thus forming a gap between the edge portion 30 of the protective film 12 and the screen. This allows air bubbles between the protective film 12 and the screen to be discharged through the gap during the film application process, preventing residual air bubbles between the screen and the protective film 12 from affecting the film application quality.

[0043] Understandably, the support member 20 and the edge portion 30 can be spaced a certain distance apart in the thickness direction of the protective film 12. Alternatively, the support member 20 can be connected to the edge portion 30 by abutment or adhesion. For example, when the support member 20 has sufficient strength and will not deform under its own weight and the weight of the protective film 12, the support member 20 can be spaced a certain distance from the protective film 12. When the strength of the support member 20 is low, for example, it may deform under the weight of the protective film 12, the support member 20 can be connected to the protective film 12 to reduce the risk that the support member 20 may deform during the film application process and fall out of the screen and the protective film 12, thus failing to form air bubble gaps.

[0044] In an alternative example, one end of the support member 20 is connected to the positioning film 14 and the other end abuts or adheres to the edge 30 of the protective film 12, reducing the risk of the support member 20 coming off between the screen and the protective film 12 and forming a more stable air bubble gap.

[0045] In an optional example, the support member 20 has an adhesive layer 22 on the side near the positioning film 14. The support member 20 is connected to the edge 30 of the protective film 12 through the adhesive layer 22, forming an adhesive bond between the support member 20 and the protective film 12. Compared to an abutting method, this enhances the connection strength between the support member 20 and the protective film 12, reducing the risk of separation between the support member 20 and the protective film 12 during film application, which could affect the air venting effect. The other end of the support member 20 is connected to the positioning film 14 through the adhesive layer 22.

[0046] Understandably, the two ends of the support member 20 can be bonded to the edge portion 30 of the protective film 12 and the positioning film 14 respectively through the same adhesive layer 22, or they can be bonded to the edge portion 30 of the protective film 12 and the positioning film 14 respectively through two different adhesive layers 22.

[0047] Optionally, the support member 20 is bonded to both the edge portion 30 and the positioning film 14 via the same adhesive layer 22. The area where the support member 20 connects to the edge portion 30 of the protective film 12 is smaller than the area where it connects to the positioning film 14. This results in a weaker connection between the support member 20 and the edge portion 30 of the protective film 12 compared to the connection between the support member 20 and the positioning film 14. A stronger connection between two objects means a greater external force is required to separate them. Since the external force required to separate the support member 20 from the edge portion 30 is less than the external force required to separate the support member 20 from the positioning film 14, removing the positioning film 14 from the protective film 12 can simultaneously separate the support member 20 from the edge portion 30 of the protective film 12, eliminating the need to separate the support member 20 from the edge portion 30 of the protective film 12 separately, thus facilitating user convenience.

[0048] In other embodiments, the connection strength between the support member 20 and the edge portion 30 can be made less than the connection strength between the support member 20 and the positioning film 14 in other ways. For example, one end of the support member 20 can be integrally formed with the positioning film 14, and the other end can be connected to the edge portion 30 of the protective film 12 by adhesive. The connection strength of the integrally formed part is greater than that of the adhesive connection, so the support member 20 can be separated from the edge portion 30 when the positioning film 14 is removed.

[0049] The support member 20 is connected to the edge portion 30 and is spaced apart from the adhesive layer on one side of the main body portion 28 to prevent the support member 20 from contacting the adhesive layer 26 and affecting the adhesion of the adhesive layer 26, and to avoid affecting the film application quality due to the reduced adhesion of the adhesive layer 26.

[0050] In one embodiment, there are four edge portions 30, which are connected end to end to form a ring structure, and the four edge portions 30 are respectively connected to the four sides of the main body portion 28.

[0051] The protective film 12 has a roughly rectangular outline and has mutually perpendicular length, width and thickness directions. The edge portion 30 near the support member 20 includes a connecting portion 32. The connecting portion 32 is located on one side of the corresponding edge portion 30 in the length direction and is spaced apart from the adhesive layer 26. One end of the support member 20 is bonded to the connecting portion 32, so that one end of the support member 20 and the connecting portion 32 are stacked. That is, the part of the edge portion 30 used to connect with the support member 20 is the connecting portion 32.

[0052] In the length direction, the distance from the outer edge of the connecting portion 32 towards the main body 28 of the support member 20 is not less than 0.2 mm and not more than 1 mm. That is, the length dimension h1 of the connection between the support member 20 and the edge portion 30 is greater than or equal to 0.2 mm and less than or equal to 1 mm. Controlling the length of the connection portion within the range of 0.2 mm to 1 mm can avoid the connection strength being too weak due to the connection length of the support member 20 and the edge portion 30 being too small, thus reducing the risk of separation between the support member 20 and the edge portion 30 during the film application process. At the same time, it can also avoid the connection strength being too large due to the connection length being too large, which would affect the separation of the support member 20 and the edge portion 30 after the venting is completed.

[0053] The dimension h2 of the support member 20 in the thickness direction is not less than 0.2mm and not more than 1mm. The thickness of the support member 20 will directly affect the size of the exhaust gap. Controlling the thickness of the support member 20 within the range of 0.2mm to 1mm can avoid the exhaust gap being too small due to the support member 20 being too thin, thus affecting the exhaust effect, while also avoiding the film being affected due to the support member 20 being too thick.

[0054] Along the length direction, the length of the connecting part 32 is less than half the length of the corresponding edge part 30. That is, the length of the part where the support member 20 is connected to the edge part 30 is half the length of the corresponding edge part 30. This is to prevent the length of the part where the support member 20 is connected to the edge part 30 from being too long, which would cause the adhesive layer 26 to separate from the screen at the end near the support member 20 when the support member 20 is separated from the connecting part 32, thereby affecting the film application effect.

[0055] Along the width direction, the two ends of the support member 20 are symmetrically arranged along the central axis of the protective film 12, so that the support member 20 is located in the middle position of the protective film 12 in the width direction. This makes the protective film 12 more evenly stressed when supported by the support member 20. The width of the support member 20 is one-half to three-quarters of the width of the protective film 12. Controlling the width ratio of the support member 20 to the protective film 12 within this range can avoid the gap being too narrow, resulting in poor air venting, while also preventing the gap from being too wide, which would affect the adhesion between the corners of the protective film 12 and the screen. In an optional example, the width of the support member 20 is approximately two-thirds of the width of the protective film 12.

[0056] In one embodiment, the positioning film 14 is provided with a through hole 34, and the part where the support member 20 is connected to the edge portion 30 corresponds to the through hole 34, so that the projection of the part where the support member 20 is connected to the edge portion 30 in the thickness direction of the positioning film 14 is located in the through hole 34, thereby exposing the part where the support member 20 is connected to the edge portion 30, avoiding the risk that the part of the support member 20 near the edge portion 30 will be connected to the positioning film 14 due to external pressure, and thus causing the support member 20 to detach from the protective film 12.

[0057] The support member 20 includes a fixing part 33 connected to the positioning film 14 and a support part 35 located at one end of the fixing part 33. The end of the support part 35 away from the fixing part 33 is connected to the edge part 30 to support the protective film 12. The projection of the support part 35 in the thickness direction of the positioning film 14 is located in the through hole 34, exposing the entire support part 35 and preventing the support part 35 from connecting with the positioning film 14, further reducing the risk of the support member 20 separating from the edge part 30 during the film application process.

[0058] The through hole 34 includes a first inner wall 36 and a second inner wall 38 disposed opposite to each other. The first inner wall 36 is located on the side of the fixing part, and the second inner wall 38 is located on the side of the first inner wall 36 away from the fixing part 33, that is, on the side of the support part 35. The end of the protective film 12 used to connect with the support member 20 extends from the second inner wall 38 toward the first inner wall 36, and the distance h3 of the protective film 12 extending from the second inner wall 38 toward the first inner wall 36 is not greater than 5mm. This reduces the risk of the support member 20 separating from the edge part 30, reduces the exposure of the protective film 12, and improves the protective effect of the positioning film 14 on the protective film 12.

[0059] This utility model also provides a screen protector device, including a screen protector applicator and the protective film assembly in the above embodiments. The screen protector applicator is used to assist the user in applying the screen protector. The screen protector applicator cooperates with the positioning film of the protective film assembly to form a positioning effect, so that the protective film of the protective film assembly is aligned with the screen, reducing the difficulty of applying the screen protector and improving the quality of the screen protector application.

[0060] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A protective film assembly, characterized in that, It includes a protective film, a release film, and a support member, wherein the release film is located on one side of the protective film, and the surface of the protective film near the release film is used to adhere to the screen of the electronic device; The protective film includes a main body and an edge portion. The main body is attached to the release film, and the edge portion extends from the main body to the outside of the release film. The support member is at least partially located on the side of the edge portion near the release film, and its orthographic projection along the thickness direction of the protective film is within the range of the edge portion.

2. The protective film assembly according to claim 1, characterized in that, The support member abuts against or is bonded to the edge portion.

3. The protective film assembly according to claim 1, characterized in that, The protective film also includes an adhesive layer, and the release film is bonded to the main body through the adhesive layer. The support member is spaced apart from the adhesive layer.

4. The protective film assembly according to claim 1, characterized in that, The protective film is a curved screen protective film, and the edge portion is curved towards the release film side, with the support member in contact with the edge portion.

5. The protective film assembly according to claim 1, characterized in that, The protective film has mutually perpendicular length, width and thickness directions. The edge portion near the support includes a connecting portion, which is located on one side of the corresponding edge portion in the length direction. One end of the support is stacked with the connecting portion.

6. The protective film assembly according to claim 5, characterized in that, In the length direction, the distance by which the support extends from the outer edge of the connecting portion toward the main body is not less than 0.2 mm and not more than 1 mm; and / or, The dimension of the support member in the thickness direction is not less than 0.2 mm and not more than 1 mm.

7. The protective film assembly according to claim 5, characterized in that, In the length direction, the length of the connecting portion is less than half the length of the corresponding edge portion.

8. The protective film assembly according to claim 5, characterized in that, In the width direction, the two ends of the support member are symmetrically arranged along the central axis of the protective film, and the width of the support member is one-half to three-quarters of the width of the protective film.

9. The protective film assembly according to any one of claims 1-8, characterized in that, The protective film assembly also includes a positioning film attached to the side of the protective film away from the release film, and one end of the support member is connected to the positioning film and the other end is connected to the edge portion.

10. The protective film assembly according to claim 9, characterized in that, An adhesive layer is provided on one side of the support member, and the support member is connected to the edge portion and the positioning film through the adhesive layer.

11. The protective film assembly according to claim 10, characterized in that, The area of ​​the part where the support member is connected to the positioning film is larger than the area of ​​the part where the support member is connected to the edge.

12. The protective film assembly according to claim 9, characterized in that, One end of the support member is integrally formed with the positioning film, and the other end is connected to the edge portion by adhesive.

13. The protective film assembly according to claim 9, characterized in that, The positioning film has a through hole, and the projection of the part where the support member is connected to the edge portion in the thickness direction of the positioning film is located in the through hole.

14. The protective film assembly according to claim 13, characterized in that, The support member includes a fixing part connected to the positioning film and a support part located at one end of the fixing part. The end of the support part away from the fixing part is connected to the edge part, and the projection of the support part in the thickness direction of the positioning film is located in the through hole.

15. The protective film assembly according to claim 14, characterized in that, The through hole includes a first inner wall and a second inner wall disposed opposite to each other. The first inner wall is located on one side of the fixing part, and the second inner wall is located on one side of the supporting part. The protective film extends from the second inner wall toward the first inner wall by a distance not greater than 5 mm.

16. A film-applying device, characterized in that, Includes a film applicator and a protective film assembly as described in any one of claims 1-15.

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