Reticulated flexible viscosity-reducing adhesive film

Abstract

The utility model relates to the technical field of viscosity-reducing adhesive films, in particular to a reticulated flexible viscosity-reducing adhesive film. According to the technical scheme, the adhesive tape comprises a base layer, a viscosity-reducing adhesive layer is arranged on the bottom surface of the base layer, and a release layer is arranged on the bottom surface of the viscosity-reducing adhesive layer; the breathable layer is arranged between the base layer and the viscosity reducing adhesive layer and used for breathability, and a reticulate pattern layer used for increasing flexibility is arranged on the upper surface of the breathable layer. According to the utility model, the adhesive film has good air permeability, air can be quickly exhausted in the attaching process, bubbles are effectively avoided, the attaching effect and the product attractiveness are improved, the structural strength and the deformation resistance of the adhesive film are enhanced while the flexibility is ensured, the adhesive film can be tightly attached to various complex curved surfaces, accurate attaching can be realized, and the product quality is improved. Meanwhile, external force impact and bending are effectively resisted, and the service life of the adhesive film is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of anti-adhesion film technology, and in particular to a textured flexible anti-adhesion film. Background Technology

[0002] In many fields such as electronics, optics, and packaging, non-adhesive films are widely used as important auxiliary materials. They provide effective protection for product surfaces during processing, transportation, and storage, preventing scratches and contamination, while avoiding residue upon peeling due to excessive viscosity, thus preserving the product's appearance and performance. As industries increasingly demand higher levels of product refinement and quality, higher standards are being set for the performance of non-adhesive films. Existing non-adhesive films have poor air permeability. In the assembly process of electronic products, if the film is not breathable, air bubbles can easily form after lamination, affecting product quality and performance. Furthermore, the inability to dissipate internal heat can accelerate the aging of product components. Therefore, this invention proposes a textured flexible non-adhesive film. Utility Model Content

[0003] The purpose of this invention is to address the problem that in the background technology, the air permeability of the anti-adhesion adhesive film is poor. In the assembly process of electronic products, if the adhesive film is not breathable, air bubbles are easily generated after bonding, which affects the product quality and performance. It may also lead to accelerated aging of product components due to the inability to dissipate internal heat in time. Therefore, a textured flexible anti-adhesion adhesive film is proposed.

[0004] The technical solution of this utility model is as follows: a textured flexible anti-adhesive film, comprising: a base layer, wherein an anti-adhesive layer is disposed on the bottom surface of the base layer, and a release layer is disposed on the bottom surface of the anti-adhesive layer; a breathable layer disposed between the base layer and the anti-adhesive layer for air permeability, wherein a textured layer for increasing flexibility is disposed on the upper surface of the breathable layer.

[0005] Optionally, the textured layer includes multiple first flexible elastic strips and second flexible elastic strips, which are interlaced to form a continuous grid shape.

[0006] Optionally, the bottom surface of the base layer is provided with multiple horizontal ventilation slots and vertical ventilation slots, which are vertically intersecting and connected.

[0007] Optionally, the base layer includes, but is not limited to, one of polyester film, polyimide film, polyethylene film, and polypropylene film.

[0008] Optionally, the anti-tack adhesive layer is formed by embossing with anti-tack adhesive and has a thickness of 0.01mm-0.1mm, and the adhesive force of the anti-tack adhesive layer is 0.1N / cm-1N / cm.

[0009] Optionally, the release layer is a silicone oil release film, and the release force is 1-50 g / inch.

[0010] Optionally, the breathable layer is made of a porous material with a pore size of 0.01 μm-10 μm and a porosity of 30%-80%.

[0011] Optionally, the mesh shape of the mesh layer is rhomboid, and the height of the mesh is 0.05mm-0.5mm, and the mesh spacing is 0.1mm-1mm.

[0012] Optionally, the first flexible spring is made of thermoplastic polyurethane, and the second flexible spring is made of vinyl acetate copolymer.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] This invention constructs a three-dimensional ventilation channel by creating horizontal and vertical ventilation grooves on the bottom surface of the base layer, combined with a breathable layer made of porous material. The porous material has a pore size of 0.01μm-10μm and a porosity of 30%-80%, giving the adhesive film excellent breathability. During the bonding process, air can be quickly expelled, effectively preventing the formation of air bubbles and improving the bonding effect and product aesthetics.

[0015] Furthermore, this invention, by setting a textured layer composed of a first flexible elastic strip made of thermoplastic polyurethane and a second flexible elastic strip made of vinyl acetate copolymer forming a continuous grid shape, gives the adhesive film excellent flexibility. While ensuring flexibility, it enhances the structural strength and resistance to deformation of the adhesive film, enabling the adhesive film to closely adhere to various complex curved surfaces, thus broadening its application scenarios. Whether it is curved electronic product shells or irregularly shaped packaging materials, it can achieve precise adhesion, while effectively resisting external impacts and bending, and extending the service life of the adhesive film. Attached Figure Description

[0016] Figure 1 A schematic diagram of a textured flexible anti-adhesion adhesive film is provided.

[0017] Figure 2 for Figure 1 A schematic diagram of the split structure;

[0018] Figure 3 for Figure 2 Schematic diagram of the bottom structure of the intermediate base layer.

[0019] Figure label:

[0020] 1. Base layer; 2. Adhesive layer; 3. Release layer; 4. Breathable layer;

[0021] 5. Textured layer; 51. First flexible elastic band; 52. Second flexible elastic band;

[0022] 6. Horizontal ventilation slot; 7. Vertical ventilation slot. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0024] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0025] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example

[0029] like Figures 1 to 3As shown, the flexible textured adhesive film proposed in this utility model includes: a base layer 1, which includes, but is not limited to, one of polyester film, polyimide film, polyethylene film, and polypropylene film, allowing for the selection of appropriate materials according to different needs, thereby improving the performance. The bottom surface of the base layer 1 has multiple horizontal ventilation grooves 6 and vertical ventilation grooves 7, which are vertically intersecting and connected to facilitate the removal of gas during the pasting process, thus preventing the formation of air bubbles and improving the adhesive effect.

[0030] Furthermore, a non-adhesive layer 2 is provided on the bottom surface of the base layer 1. The non-adhesive layer 2 is formed by embossing the non-adhesive adhesive, which transforms the non-adhesive adhesive into a coating with a specific microstructure. The thickness is 0.01mm-0.1mm. The adhesive force of the non-adhesive layer 2 is 0.1N / cm-1N / cm. It can maintain a stable adhesion effect and can be easily peeled off when needed without leaving any adhesive residue, which greatly improves the convenience and applicability of the adhesive film.

[0031] Furthermore, a release layer 3 is provided on the bottom surface of the anti-adhesion layer 2. The release layer 3 is a silicone oil release film with a release force of 1-50g / inch. The silicone oil release film has excellent release performance and can effectively protect the anti-adhesion layer 2 when the film is not in use, preventing the adhesive from accidentally sticking to external objects. A breathable layer 4 is provided between the base layer 1 and the anti-adhesion layer 2 for ventilation. The breathable layer 4 is composed of porous material with a pore size of 0.01μm-10μm and a porosity of 30%-80%, which gives the breathable layer 4 good air permeability while effectively blocking dust, impurities and other small particles, ensuring a clean environment inside the film, and further improving the performance and lifespan of the film.

[0032] like Figure 1 and Figure 2As shown, the upper surface of the breathable layer 4 is provided with a textured layer 5 to increase flexibility. The textured layer 5 has a rhomboid shape to facilitate gas flow. The height of the texture is 0.05mm-0.5mm, and the spacing between the textures is 0.1mm-1mm. This allows the textured layer 5 to increase the flexibility of the adhesive film while also enhancing the contact area between the adhesive film and the object surface, improving the tightness and stability of the adhesion. The textured layer 5 includes multiple first flexible elastic strips 51 and second flexible elastic strips 52. The first flexible elastic strips 51 and second flexible elastic strips 52 are interlaced to form a continuous grid shape, and the first... The first flexible spring strip 51 is made of thermoplastic polyurethane, and the second flexible spring strip 52 is made of vinyl acetate copolymer. The first flexible spring strip 51 is made of thermoplastic polyurethane, which has excellent elasticity and wear resistance, giving the textured layer 5 good resilience and durability. The second flexible spring strip 52 is made of vinyl acetate copolymer, which has excellent flexibility and adhesion. It can work synergistically with the first flexible spring strip 51 to improve the overall performance of the textured layer 5, so that the entire textured flexible anti-stick film can show excellent performance in various complex usage environments.

[0033] The working principle of this embodiment is as follows: The base layer 1 can be made of one of the following materials: polyester film, polyimide film, polyethylene film, polypropylene film, etc. It serves as the supporting structure for the entire adhesive film, providing basic strength and stability, ensuring that the adhesive film will not easily break or deform during use. Simultaneously, multiple horizontal ventilation grooves 6 and vertical ventilation grooves 7 on the bottom surface of the base layer 1 are vertically interwoven and play an important role in the ventilation process. During the air exhaust process of the breathable layer 4, the horizontal ventilation grooves 6 and vertical ventilation grooves 7 act as air collection channels. The air exhausted from the breathable layer 4 first enters the ventilation grooves on the bottom surface of the base layer 1, and then, through the interwoven horizontal ventilation grooves 6 and vertical ventilation grooves 7, the air is quickly guided to the edge of the adhesive film and exhausted to the outside, further improving the efficiency of air exhaust and ensuring the smooth progress of the adhesive film bonding process.

[0034] The anti-tack layer 2 is formed from anti-tack adhesive through an embossing process, with a thickness between 0.01mm and 0.1mm and an adhesive strength between 0.1N / cm and 1N / cm. Its function is to ensure adequate adhesion to the surface of the object being bonded while maintaining low tack, facilitating subsequent removal and avoiding damage to the surface or excessive adhesive residue. When the adhesive film is applied to the object's surface, the molecules of the anti-tack layer 2 interact with the surface molecules, forming a certain adhesive force. However, due to its low tack, separation is relatively easy when the adhesive film needs to be removed.

[0035] Release layer 3 uses silicone oil release film with a release force of 1-50 g / inch. Its main function is to isolate the adhesive layer 2 from other objects when the film is not in use, protecting the adhesiveness and integrity of the adhesive layer 2. When the film needs to be used, release layer 3 can be easily peeled off from the adhesive layer 2, allowing the adhesive layer 2 to function properly.

[0036] The breathable layer 4 is composed of a porous material with a pore size ranging from 0.01μm to 10μm and a porosity of 30% to 80%. During the adhesive film bonding process, when pressure is applied to the adhesive film to bond it to the surface of the object being bonded, some air may be present between the object surface and the adhesive film. These micropores in the breathable layer 4 provide channels for air to escape, allowing air to escape to the outside through the pores of the breathable layer 4, thereby preventing the formation of air bubbles between the adhesive film and the bonded object, ensuring a tight and aesthetically pleasing bond. For example, when bonding the adhesive film to a smooth surface such as a flat screen, the breathable layer 4 effectively prevents air bubble formation, ensuring complete adhesion between the adhesive film and the screen.

[0037] The textured layer 5 is formed by multiple interlaced first flexible elastic strips 51 and second flexible elastic strips 52, creating a continuous grid shape. The first flexible elastic strips 51 are made of thermoplastic polyurethane, and the second flexible elastic strips 52 are made of vinyl acetate copolymer. Both materials possess good flexibility, and the grid structure they form gives the textured layer 5 its overall flexibility. When the adhesive film needs to be adhered to a surface with a certain curvature or unevenness, the textured layer 5 can deform to a certain extent, allowing the adhesive film to better adapt to the shape of the object being adhered to, thus improving the adaptability and adhesion.

[0038] The mesh structure formed by the textured layer 5 also helps with air expulsion to some extent. During the air expulsion process of the breathable layer 4, the mesh gaps of the textured layer 5 can act as auxiliary channels for air, further accelerating the air expulsion speed, improving exhaust efficiency, and working synergistically with the breathable layer 4 to more effectively prevent the formation of air bubbles.

[0039] The textured layer 5 has a rhomboid shape, with a height of 0.05mm-0.5mm and a spacing of 0.1mm-1mm. This specific shape and size design, on the one hand, ensures the flexibility of the textured layer 5 while providing a certain structural strength to prevent it from being easily damaged during use; on the other hand, the appropriate texture height and spacing facilitate a more even distribution of the anti-adhesive layer 2 on the surface of the object being adhered during adhesive film application.

[0040] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A textured flexible anti-adhesive film, characterized in that, include: The base layer (1) has a non-adhesive layer (2) on its bottom surface and a release layer (3) on its bottom surface. A breathable layer (4) is disposed between the base layer (1) and the adhesive layer (2) for air permeability, and the upper surface of the breathable layer (4) is provided with a textured layer (5) for increasing flexibility.

2. The textured flexible anti-adhesive film according to claim 1, characterized in that, The textured layer (5) includes multiple first flexible elastic strips (51) and second flexible elastic strips (52), which intersect to form a continuous grid shape.

3. The textured flexible anti-adhesive film according to claim 1, characterized in that, The bottom surface of the base layer (1) is provided with a plurality of horizontal ventilation grooves (6) and vertical ventilation grooves (7), which are vertically intersecting and connected.

4. The textured flexible anti-adhesive film according to claim 1, characterized in that, The base layer (1) includes, but is not limited to, one of polyester film, polyimide film, polyethylene film, and polypropylene film.

5. The textured flexible anti-adhesive film according to claim 1, characterized in that, The anti-tack layer (2) is formed by anti-tack adhesive through an embossing process, and its thickness is 0.01mm-0.1mm. The adhesive force of the anti-tack layer (2) is 0.1N / cm-1N / cm.

6. The textured flexible anti-adhesive film according to claim 1, characterized in that, The release layer (3) is a silicone oil release film, and the release force is 1-50 g / inch.

7. The textured flexible anti-adhesive film according to claim 1, characterized in that, The breathable layer (4) is made of a porous material with a pore size of 0.01μm-10μm and a porosity of 30%-80%.

8. The textured flexible anti-adhesive film according to claim 1, characterized in that, The textured layer (5) has a rhomboid shape, and the height of the texture is 0.05mm-0.5mm, and the spacing between the textures is 0.1mm-1mm.

9. The textured flexible anti-adhesive film according to claim 2, characterized in that, The first flexible spring strip (51) is made of thermoplastic polyurethane, and the second flexible spring strip (52) is made of vinyl acetate copolymer.

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