Protective film for improving laminating reliability of release film with drawstring
By setting a tongue structure on the protective film to constrain the connection between the release film and the hand-tear tape, the problem of the pulling force of the hand-tear tape on the release film is solved, the film application quality is improved and the cost is reduced, and the long service life of the protective film is ensured.
Patent Information
- Application Number
- CN202423198460.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-24
AI Technical Summary
During use, the tearing and pulling of existing protective films can cause tension on the release film, leading to decreased adhesion and dust adhesion, which affects the quality of the film application. At the same time, the use of double-sided adhesive increases processing steps and material costs, and also causes a decrease in adhesion under prolonged pressure.
An abutment piece is set on the upper protective film to form an insert structure. The connection position of the release film and the hand-tearable tape is inserted into the insert structure, avoiding the use of traditional double-sided tape. The stability of the connection position is maintained through the coupling and constraint of the insert structure.
It effectively prevents accidental tearing at the connection point between the release film and the hand-tear tape, as well as stress on the adhesive surface, maintaining the long-term performance and stability of the protective film, and reducing processing difficulty and material costs.
Smart Images
Figure CN223592648U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of protective film, especially to a protective film improving the reliability of the lamination of the protective film with the release film. BACKGROUND
[0002] With the screen touch technology bringing many benefits in terms of operational convenience, device design and function expansion, and user interaction and experience, many electronic products such as mobile phones and tablets are equipped with a full-screen touch screen. However, due to the need for constant touch of the screen during use, combined with the fact that the full screen of the electronic product is almost covered, it is prone to scratching, bumping, damage, and is not resistant to dropping and cannot withstand a large impact. Therefore, a protective film is often attached to the surface to provide some degree of protection.
[0003] Due to the variety of protective films, and the fact that the protective film itself will be damaged after protecting the screen from bumps and impacts, most protective films are purchased and used by the user themselves. In order to accurately attach the protective film to the screen during use, existing protective films are generally equipped with a film applicator to assist in the attachment of the film. A relatively traditional cooperation mode between the existing film applicator and the protective film is to provide an upper protective sheet on the upper surface of the protective film for positioning and cooperation with the film applicator, and then connect a hand-tearable pull tab to the release film of the protective film, so that the protective film can be positioned and cooperated with the screen to be attached to the film by the film applicator, and then the release film is torn in the opposite direction by pulling the hand-tearable pull tab to attach the protective film to the screen to be attached to the film. Through this operation, the protective film and the screen to be attached to the film can be accurately positioned, and the effect of dust-free film attachment between the protective film and the screen to be attached to the film can be achieved.
[0004] However, the inventors have found that the protective film with the hand-tearable pull tab and the upper protective sheet can increase the loss of the adhesive surface to some extent, that is, when the protective film is not in use, the hand-tearable pull tab will generate a certain pulling force on the position where the release film is connected, causing the adhesive at the position to be exposed to the air to some extent, thereby causing the adhesive to easily attach dust, causing the adhesion to decrease, and affecting the film attachment quality. In order to solve this problem, some protective films set an extension corresponding to the position of the hand-tearable pull tab on the upper protective sheet and the release film, and set double-sided tape on the extension of the upper protective sheet and the release film to attach, so that the end of the hand-tearable pull tab can be stuck by the double-sided tape when not in use, thereby not generating a force on the release film. However, the setting of the double-sided tape not only increases the processing steps and the material cost of the double-sided tape, but also causes the release film to exert a certain pressure on the adhesive of the protective film during a long period of attachment. Under the long-term pressure, the adhesive will be crushed, causing the adhesion to decrease and affecting the film attachment quality. Therefore, it is necessary to propose an improved technical solution to solve the above problems. UTILITY MODEL CONTENT
[0005] The utility model discloses to overcome above-mentioned situation shortage, aim at providing a kind of technical scheme that can solve above-mentioned problem.
[0006] A protective film for improving the reliability of the bonding of the pull tape and the release film, comprising a protective film, a release film and an upper protective sheet, the protective film has a touch surface and a sticking surface, the upper protective sheet is attached to the touch surface, and the release film is attached to the sticking surface, and one end of the release film is connected with a hand-tearable pull tape corresponding to the back of the release film, an abutting piece is provided on the upper protective sheet, and an insertion tongue structure is formed between the upper protective sheet and the abutting piece, and the release film and the hand-tearable pull tape are inserted into the insertion tongue structure at the connection position.
[0007] Preferably, the edge of the upper protective sheet extends to form a first extension, and the abutting piece is provided on the first extension.
[0008] Preferably, one side of the abutting piece is fixedly connected to the upper protective sheet, so that the abutting piece forms an insertion tongue structure that can be flipped open along the other side.
[0009] Preferably, a D-shaped cutting line is cut on the upper protective sheet, and the upper protective sheet forms the abutting piece through the D-shaped cutting line.
[0010] Preferably, both ends of the D-shaped cutting line extend to form a return portion.
[0011] Preferably, the connection position of the release film and the hand-tearable pull tape and the end position of the protective film are both arranged to be inserted into the insertion tongue structure.
[0012] Preferably, the insertion tongue structure is arranged to only insert the connection position of the release film and the hand-tearable pull tape therein.
[0013] Preferably, a second extension is formed at the position where the release film and the hand-tearable pull tape are connected, and the release film and the hand-tearable pull tape are inserted into the insertion tongue structure through the second extension.
[0014] Preferably, the second extension includes a first extension segment formed along the edge of the release film, a folded segment formed by folding the end of the first extension segment, and a second extension segment formed along the end of the hand-tearable pull tape, and the second extension segment is fixedly bonded to the folded segment.
[0015] In the state of insertion and cooperation between the second extension and the insertion tongue structure, the first extension segment and the folded segment are arranged to have an opening tension, and the upper protective sheet and the abutting piece are arranged to have a closing force, so that the second extension and the insertion tongue structure form a mutual abutting constraint mode after insertion.
[0016] Compared with the prior art, the utility model has the beneficial effects that:
[0017] An insert structure, formed by abutting tabs, is incorporated into the upper protective film, allowing the release film and the tear-off tape to interlock. Compared to traditional double-sided adhesive methods, this approach focuses more on coupling and mutual constraint while maintaining a degree of flexibility. When not in use, even under shaking, pressure, or contact, the insert structure will not exert excessive pressure or stretching forces on the connection between the release film and the tear-off tape. This ensures the connection between the release film and the tear-off tape remains stable over a long period, preventing accidental tearing of the release film and avoiding prolonged stress on the adhesive surface. This effectively guarantees the long-term shelf life of the protective film, allowing it to maintain good performance for an extended period.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of a structure according to Embodiment 1 of this utility model;
[0021] Figure 2 This is another structural schematic diagram of Embodiment 1 of this utility model;
[0022] Figure 3 This is a utility model Figure 2 A schematic diagram of the cross-sectional structure located at the abutment plate position;
[0023] Figure 4 This is a utility model Figure 2 A schematic diagram of the split structure;
[0024] Figure 5 This is a utility model Figure 4 Schematic diagram of the structure at point A;
[0025] Figure 6 This is a schematic diagram of a structure of Embodiment 2 of this utility model;
[0026] Figure 7 This is another structural schematic diagram of Embodiment 2 of this utility model;
[0027] Figure 8 This is a utility model Figure 7Split structure schematic view of the.
[0028] The reference signs and names in the drawings are as follows:
[0029] Protective film 10, release film 20, second extension 21, first extension 22, folding section 23, upper protective sheet 30, first extension 31, hand tearing tape 40, second extension 41, abutting sheet 50, U-shaped cutting line 51, back bending part 52. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0031] Please refer to Figures 1-8 In the embodiments of the present application, a protective film for improving the reliability of release film and tape attachment includes a protective film 10, a release film 20 and an upper protective sheet 30. The protective film 10 has a touch surface and a sticking surface. The upper protective sheet 30 is attached to the touch surface, and the release film 20 is attached to the sticking surface. One end of the release film 20 is connected to a hand tearing tape 40 corresponding to the back of the release film 20. An abutting sheet 50 is arranged on the upper protective sheet 30, forming a plug structure between the upper protective sheet 30 and the abutting sheet 50. The release film 20 and the hand tearing tape 40 are inserted into the plug structure at the connection position.
[0032] The protective film 10 is used to be attached to a screen to be pasted with film. It is attached to the screen to be pasted with film through the sticking surface. The protective film 10 is fixed on a film pasting device through the upper protective sheet 30, and is positioned and matched with the screen to be pasted with film through the film pasting device. After the protective film 10 is positioned and matched with the screen to be pasted with film, the hand tearing tape 40 is pulled outwards, so that the hand tearing tape 40 can drive the release film 20 to be torn off from the sticking surface in the opposite direction. After the release film 20 is torn off, the sticking surface is directly attached to the screen to be pasted with film, thereby completing the precise film pasting operation.
[0033] On this basis, by setting the abutting piece 50 on the upper protection piece 30, the plug-in structure is formed between the upper protection piece 30 and the abutting piece 50, and the connection position of the release film 20 and the hand-tearing pull strip 40 is inserted into the plug-in structure. Compared with the traditional way of pasting by double-sided adhesive, when the connection position cooperates with the plug-in structure, it is more coupled, that is, it is constrained by each other, and has a certain flexibility to a certain extent. Therefore, when not in use, the plug-in structure will not produce excessive extrusion or tensile force on the connection position of the release film 20 and the hand-tearing pull strip 40 in the case of shaking, extrusion, touching and the like, so that the connection position of the release film 20 and the hand-tearing pull strip 40 can be kept in a stable state for a long time, neither tearing the release film 20 nor causing stress on the pasting surface for a long time, thereby ensuring the long-term storage life of the protective film 10.
[0034] Based on the structural characteristics of the abutting piece 50, the technical scheme is preferably as follows:
[0035]
Embodiment 1
[0036] As shown in Figure 1 The connection relationship between the abutting piece 50 and the upper protection piece 30 can be pasted by double-sided adhesive, that is, one side of the abutting piece 50 is fixedly connected with the upper protection piece 30 by double-sided adhesive; as Figure 2As shown, the connection relationship between the abutting piece 50 and the upper protective piece 30 is further provided with a D-shaped cutting line 51 cut on the upper protective piece 30. By using the D-shaped cutting line 51, the upper protective piece 30 is automatically cut to form the abutting piece 50. This structure design can reduce the processing difficulty and material cost to a certain extent. The abutting piece 50 is directly set by using the D-shaped cutting line 51. After being inserted between the abutting piece 50 and the upper protective piece 30 at the position where the release film 20 and the hand-tearable pull tape 40 are connected, the abutting piece 50 will be naturally expanded, so as to only press the connection position of the release film 20 and the hand-tearable pull tape 40, and ensure that the hand-tearable pull tape 40 will not flip the release film 20.
[0037] The width of the position where the release film 20 and the hand-tearable pull tape 40 are connected is preferably greater than the width of the abutting piece 50. In this way, when the abutting piece 50 presses the connection position of the release film 20 and the hand-tearable pull tape 40, the connection position of the release film 20 and the hand-tearable pull tape 40 will not be squeezed into the upper end of the upper protective piece 30, but will be abutted under the upper protective piece 30 outside the D-shaped cutting line 51. This setting can make the plug structure more closely cooperate with the connection position of the release film 20 and the hand-tearable pull tape 40, thereby improving the stability and reliability of the entire cooperation structure. In addition, in order to prevent the abutting piece 50 from tearing the D-shaped cutting line 51 after being expanded, the D-shaped cutting line 51 is extended to have a back bending part 52 at both ends. By the back bending part 52, the firmness of both ends of the D-shaped cutting line 51 can be improved to prevent the D-shaped cutting line 51 from being torn at both ends, thereby reducing the closing force of the abutting piece 50 and the upper protective piece 30.
[0038] In order to make the connection position of the release film 20 and the hand-tearable pull tape 40 better cooperate with the plug structure, the second extension part 21 includes a first extension segment 22 extending along the edge of the release film 20, a folding segment 23 folded along the end of the first extension segment 22, and a second extension segment 41 extending along the end of the hand-tearable pull tape 40, and the second extension segment 41 is fixedly bonded to the folding segment 23. In the state of the plug cooperation between the second extension part 21 and the plug structure, the first extension segment 22 and the folding segment 23 are provided with an opening tension, and the upper protective piece 30 and the abutting piece 50 are provided with a closing force, so that the second extension part 21 and the plug structure form a mutual abutting constraint mode after being plugged.
[0039]
Example 2
[0040] The two ends of the abutting piece 50 are connected to the two sides of the upper protection piece 30 respectively, so that a structure similar to a drawer is formed between the abutting piece 50 and the upper protection piece 30. Through this arrangement, the connection structure between the release film 20 and the hand-tearing pull tape 40 can be more flexibly arranged. This structure design allows the connection structure of the release film 20 and the hand-tearing pull tape 40 to have multiple arrangement modes, that is, as shown in Figure 5 , the connection position of the release film 20 and the hand-tearing pull tape 40 and the end position of the protective film 10 can be arranged to be inserted into the plug-in structure; or as shown in Figure 6 , a first extension 31 is formed by extending the edge of the upper protection piece 30, the abutting piece 50 is arranged on the first extension 31, a second extension 21 is formed by extending the position where the release film 20 and the hand-tearing pull tape 40 are connected, and the release film 20 and the hand-tearing pull tape 40 are inserted into the plug-in structure through the second extension 21. Only the connection position of the release film 20 and the hand-tearing pull tape 40 can be inserted into the plug-in structure;
[0041] This provides convenience for the production and adaptive adjustment of the protective film 10 in different use scenarios, and improves the versatility and customizability of the product. No matter which insertion mode is used, the plug-in structure can effectively constrain and protect the connection position of the release film 20 and the hand-tearing pull tape 40. When both the connection position and the end position are inserted, the stability of the overall structure can be further enhanced, and the relative displacement and shaking between the components can be reduced. When only the connection position is inserted, the reliability of the connection can be ensured by the characteristics of the plug-in structure, the connection position can be prevented from being damaged due to external factors, and the stability and reliability of the connection between the release film 20 and the hand-tearing pull tape 40 are further ensured, so that the protective film 10 can be in a good state during storage, transportation and use preparation, which is beneficial to maintaining the overall performance and service life of the protective film 10.
[0042] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.
Claims
1. A protective film for improving the reliability of a tape tab release film attachment, characterized by, The protective film (10), the release film (20) and the upper protective sheet (30) are provided, the protective film (10) has a touch surface and a sticking surface, the upper protective sheet (30) is attached to the touch surface, the release film (20) is attached to the sticking surface, and one end of the release film (20) is connected with a hand-tearable pull tape (40) corresponding to the back of the release film (20), and an abutting piece (50) is arranged on the upper protective sheet (30), and a plug-in structure is formed between the upper protective sheet (30) and the abutting piece (50), and the connection position of the release film (20) and the hand-tearable pull tape (40) is inserted into the plug-in structure.
2. The protective film for improving the reliability of the tape-separation release film attachment according to claim 1, characterized in that, The edge of the upper protective sheet (30) extends to form a first extension (31), and the abutting piece (50) is arranged on the first extension (31).
3. The protective film for improving the reliability of the tape-separation release film attachment according to claim 2, characterized in that, One side of the abutting piece (50) is fixedly connected with the upper protective sheet (30), so that the abutting piece (50) forms a plug-in structure which can be opened along the other side.
4. The protective film for improving the reliability of the tape-separation release film attachment according to claim 3, characterized in that, A U-shaped cutting line (51) is arranged on the upper protective sheet (30), and the upper protective sheet (30) forms the abutting piece (50) through the U-shaped cutting line (51).
5. The protective film for improving the reliability of the tape-separation release film attachment according to claim 4, characterized in that, Both ends of the U-shaped cutting line (51) extend to form a back-bending part (52).
6. The protective film for improving the reliability of the tape-separation release film attachment according to claim 1, characterized in that, The connection position of the release film (20) and the hand-tearable pull tape (40) and the end position of the protective film (10) are arranged to be inserted into the plug-in structure.
7. The protective film for improving the reliability of the tape-attaching release film according to claim 1, wherein The plug-in structure is arranged to only insert the connection position of the release film (20) and the hand-tearable pull tape (40) into it.
8. The protective film for improving the reliability of the tape-laying type release film according to claim 7, wherein The connection position of the release film (20) and the hand-tearable pull tape (40) extends to form a second extension (21), and the release film (20) and the hand-tearable pull tape (40) are inserted into the plug-in structure through the second extension (21).
9. The protective film for improving the reliability of the tape-laying type release film according to claim 8, wherein The second extension (21) includes a first extension segment (22) extending along the edge of the release film (20), a folding segment (23) folded along the end of the first extension segment (22), and a second extension segment (41) extending along the end of the hand-tearable pull tape (40), and the second extension segment (41) is fixedly bonded to the folding segment (23); In the state of the plug-in cooperation between the second extension (21) and the plug-in structure, the first extension segment (22) and the folding segment (23) are arranged to have an opening tension, the upper protective sheet (30) and the abutting piece (50) are arranged to have a closing force, and the second extension (21) and the plug-in structure form a mutual abutting constraint mode after being inserted.