EVA (Ethylene Vinyl Acetate) adhesive film capable of preventing displacement after adhesion
By designing the winding roller, film body, edge stick and automatic cutting system on the EVA film, the cumbersome problems of displacement and cutting after pasting are solved, and the automatic cutting and efficient bonding positioning of the film body is achieved.
Patent Information
- Application Number
- CN202421942235.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-12
AI Technical Summary
The existing EVA film is prone to displacement after pasting during use, and the cutting process is cumbersome, which reduces work efficiency.
An EVA film that is displaced after anti-adhesion is designed. By winding and connecting the winding roller, the film body, the edge stick and the fixing rod on the film body, and a tapered knife and screw are provided in the moving column and the guide groove, the film body is automatically cut and positioned and bonded.
Automatic cutting of the film body is achieved, working efficiency is improved, and auxiliary bonding positioning of the edge stickers is prevented from being displaced after adhesion, and the firmness of the bond is enhanced.
Smart Images
Figure CN222892795U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of EVA adhesive films, in particular to an EVA adhesive film which is prevented from shifting after pasting. Background Art
[0002] EVA is a thermosetting adhesive film used to be placed between laminated glass. Due to its superiority in adhesion, durability, optical properties, etc., EVA film is increasingly being used in current components and various optical products.
[0003] Existing EVA films are usually rolled up on rollers for carrying and use, and a knife needs to be carried for cutting during use, which makes cutting the film troublesome and reduces work efficiency. In addition, the EVA film will shift when it is not bonded after bonding, and the bonding is not firm. Utility Model Content
[0004] The utility model aims to provide an EVA film which can prevent displacement after pasting, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an EVA film that prevents sticking and displacement, comprises a winding roller, the surface of the winding roller is wound and connected with a film body, one side of the film body is connected with a first side adhesive strip, and the other side of the film body is connected with a second side adhesive strip, both ends of the winding roller are fixedly connected with a fixing rod, the top of the fixing rod is connected with a cross plate, the middle part of the cross plate is provided with a guide slot, the inner part of the guide slot is slidably connected with a moving column, the middle part of the moving column is provided with a screw groove, the inner thread of the screw groove is connected with a screw, the bottom of the screw is connected with a fixing plate, and the bottom of the fixing plate is installed with a conical knife, the moving column is pulled to slide inside the guide slot, and the conical knife at the bottom of the moving column can cut the film body along it to complete the cutting of the film.
[0006] As a preferred technical solution of the utility model, a release film is bonded to the bottom of the film body, and release paper strips are bonded to the bottom of the first side adhesive strip and the bottom of the second side adhesive strip.
[0007] As a preferred technical solution of the utility model, the film body includes a substrate layer, a first wear-resistant layer connected to the top of the substrate layer and a second wear-resistant layer connected to the bottom of the substrate layer, and an adhesive layer is provided at the bottom of the second wear-resistant layer. The first wear-resistant layer and the second wear-resistant layer enhance the wear resistance of the film body.
[0008] As a preferred technical solution of the utility model, the substrate layer is made of EVA, the first wear-resistant layer and the second wear-resistant layer are both made of polyvinyl chloride, and the adhesive layer is made of glue.
[0009] As a preferred technical solution of the utility model, two limiting plates are fixedly connected to the middle of the movable column, one of the limiting plates is located above the horizontal plate, and the other limiting plate is located below the horizontal plate.
[0010] As a preferred technical solution of the utility model, the conical knife extends to the bottom of the movable column, and the top of the screw is fixedly connected with a torsion bar, which facilitates the rotation of the screw.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] After the required length of the film is pulled out, the movable column is moved to one side of the horizontal plate, the screw is turned downward to push the fixed plate and the conical knife downward, and the conical knife can cut the film. Then, the movable column is pulled horizontally to slide inside the guide slot, and the conical knife at the bottom of the movable column can cut along the film to complete the cutting of the adhesive film. It is very convenient to use and does not require tools for cutting, which improves work efficiency. When the film is bonded for use, it is bonded to the required position, and at the same time, the first side adhesive strip and the second side adhesive strip can be used to assist in the bonding and positioning of the two sides of the film, thereby preventing the adhesive film from shifting after pasting, making the bonding more firm. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the utility model;
[0014] Figure 2 This is a structural diagram of the horizontal plate of the utility model;
[0015] Figure 3 This is the internal structure diagram of the mobile column of the utility model;
[0016] Figure 4 This is a cross-sectional connection structure diagram of the membrane body of the utility model;
[0017] Figure 5 It is a composition structure diagram of the utility model.
[0018] In the figure: 1. Winding roller; 2. Film body; 3. First side adhesive strip; 4. Second side adhesive strip; 5. Fixed rod; 6. Cross plate; 7. Guide slide groove; 8. Moving column; 9. Limiting plate; 10. Fixed plate; 11. Screw; 12. Conical knife; 13. Screw groove; 14. Torsion rod; 15. Release film; 16. Release paper strip; 17. Base material layer; 18. First wear-resistant layer; 19. Second wear-resistant layer; 20. Adhesive layer. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1-5 The utility model provides an EVA film for preventing displacement after sticking, comprising a winding roller 1, a film body 2 is wound and connected on the surface of the winding roller 1, a first side adhesive strip 3 is connected to one side of the film body 2, and a second side adhesive strip 4 is connected to the other side of the film body 2, both ends of the winding roller 1 are fixedly connected to a fixing rod 5, a cross plate 6 is connected to the top of the fixing rod 5, a guide slide groove 7 is provided in the middle of the cross plate 6, a moving column 8 is slidably connected inside the guide slide groove 7, a screw groove 13 is provided in the middle of the moving column 8, a screw groove 13 is threadedly connected to the inner thread of the screw groove 13, a fixing sheet 10 is connected to the bottom of the screw groove 11, a conical knife 12 is installed at the bottom of the fixing sheet 10, a release film 15 is bonded to the bottom of the film body 2, and a release paper strip 16 is bonded to the bottom of the first side adhesive strip 3 and the bottom of the second side adhesive strip 4;
[0021] In this embodiment, when the film body 2 is bonded for use, the release film 15 at the bottom of the film body 2 is peeled off and bonded to the desired position, and at the same time, the first side adhesive strip 3 and the second side adhesive strip 4 can be used to assist in bonding and positioning the two sides of the film body 2, so that the bonding is more firm.
[0022] See also Figure 5 The membrane body 2 includes a substrate layer 17, a first wear-resistant layer 18 connected to the top of the substrate layer 17, and a second wear-resistant layer 19 connected to the bottom of the substrate layer 17. An adhesive layer 20 is provided at the bottom of the second wear-resistant layer 19. The substrate layer 17 is made of EVA, the first wear-resistant layer 18 and the second wear-resistant layer 19 are both made of polyvinyl chloride, and the adhesive layer 20 is made of glue.
[0023] See also Figure 2-4 , two limit plates 9 are fixedly connected to the middle of the moving column 8, one of which is above the horizontal plate 6, and the other is below the horizontal plate 6, the conical knife 12 extends to the bottom of the moving column 8, and the top of the screw 11 is fixedly connected with a torsion rod 14;
[0024] In this embodiment, the screw rod 11 is turned downward by the torsion rod 14 to push the fixed plate 10 and the conical knife 12 downward, and the conical knife 12 can cut the film body 2. Then, the movable column 8 is pulled horizontally to slide inside the guide groove 7. At the same time, the conical knife 12 at the bottom of the movable column 8 can cut the film body 2 along the film body 2, which is convenient for cutting the adhesive film.
[0025] When in use, the utility model provides an EVA film that prevents displacement after sticking. During use, the film body 2 is pulled out from the surface of the winding roller 1. After pulling out the required length, the movable column 8 is moved to one side of the horizontal plate 6, and the screw rod 11 is turned downward to push the fixed plate 10 and the conical knife 12 to press down. The conical knife 12 can cut the film body 2, and then the movable column 8 is pulled horizontally to slide inside the guide slide groove 7. At the same time, the conical knife 12 at the bottom of the movable column 8 can cut it along the film body 2 to complete the cutting of the film. It is convenient to use and improves work efficiency. When the film body 2 is bonded for use, the release film 15 at the bottom of the film body 2 is peeled off to bond it to the required position, and at the same time, the first side adhesive strip 3 and the second side adhesive strip 4 can be used to assist the bonding and positioning of the two sides of the film body 2, thereby preventing the film from shifting after sticking, making the bonding more firm.
[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. An EVA film that prevents displacement after sticking, comprising a winding roller (1), characterized in that: The surface of the winding roller (1) is wound and connected with a film body (2), one side of the film body (2) is connected with a first side adhesive strip (3), and the other side of the film body (2) is connected with a second side adhesive strip (4). Both ends of the winding roller (1) are fixedly connected with fixed rods (5), the top of the fixed rod (5) is connected with a transverse plate (6), the middle of the transverse plate (6) is provided with a guide groove (7), the inside of the guide groove (7) is slidably connected with a moving column (8), the middle of the moving column (8) is provided with a screw groove (13), the internal thread of the screw groove (13) is connected with a screw rod (11), the bottom of the screw rod (11) is connected with a fixing plate (10), and the bottom of the fixing plate (10) is installed with a conical knife (12).
2. The EVA film for preventing displacement after sticking according to claim 1, characterized in that: A release film (15) is bonded to the bottom of the film body (2), and release paper strips (16) are bonded to the bottoms of the first side adhesive strip (3) and the second side adhesive strip (4).
3. The EVA film for preventing displacement after sticking according to claim 1, characterized in that: The membrane body (2) comprises a substrate layer (17), a first wear-resistant layer (18) connected to the top of the substrate layer (17), and a second wear-resistant layer (19) connected to the bottom of the substrate layer (17), wherein an adhesive layer (20) is provided at the bottom of the second wear-resistant layer (19).
4. The EVA film for preventing displacement after sticking according to claim 3, characterized in that: The base material layer (17) is made of EVA, the first wear-resistant layer (18) and the second wear-resistant layer (19) are both made of polyvinyl chloride, and the adhesive layer (20) is made of glue.
5. The EVA film for preventing displacement after sticking according to claim 1, characterized in that: Two limiting plates (9) are fixedly connected to the middle of the movable column (8), one of the limiting plates (9) is located above the transverse plate (6), and the other limiting plate (9) is located below the transverse plate (6).
6. The EVA film for preventing displacement after sticking according to claim 1, characterized in that: The conical knife (12) extends to the bottom of the moving column (8), and the top of the screw rod (11) is fixedly connected with a torsion rod (14).