Double-sided adhesive film material
Patent Information
- Application Number
- CN202522686350.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-18
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-18
AI Technical Summary
The bonding between the surface coating layer and the base layer of existing building materials and furniture has problems such as poor adhesion and easy separation. In particular, due to the differences in materials, the fluidity and softness of the adhesive are difficult to achieve a stable and effective bond.
The adhesive film material is double-sided, including a hot melt adhesive layer and a pressure-sensitive adhesive layer, which are bonded to the decorative film layer and the base layer respectively. The adhesive layer is protected by first and second release layers, and the grid on the surface of the release layer is used to expel gas, ensuring that the two layers are tightly bonded.
It achieves a strong bond between the decorative film layer and the base layer, avoids the formation of air bubbles, and ensures a beautiful and stable bonding effect, suitable for furniture and building materials of various materials.
Smart Images
Figure CN224930491U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of adhesive film technology, and in particular to a double-sided adhesive film. Background Technology
[0002] To conserve natural resources, more and more building materials and furniture are using composite materials. In order to make building materials and furniture more beautiful and natural, a decorative film layer is usually attached to the surface of the composite material as a base layer. For example, a decorative film layer with a metallic texture is attached to the surface of plastic or wood materials to make them look like metal, or a decorative film layer with a stone or wood texture is attached to the surface of plastic or metal materials to make them look like natural stone or wood. Typically, the base layer of building materials and furniture is bonded to the surface decorative film layer with adhesive. However, because the materials of the base layer and the decorative film layer differ significantly in performance and texture—the base layer of furniture or building materials is usually made of metal, plastic, or stone, while the decorative film layer is usually made of polymer film, fabric, or leather—the base layer is harder than the decorative film layer. Furthermore, the adhesive has a certain degree of fluidity, making application difficult and causing wrinkles during application. This makes it hard to achieve an ideal bonding effect and ensure a stable and effective bond, leading to the decorative film layer easily detaching during later use.
[0003] The technical problem to be solved by this utility model is: how to solve the problems of poor adhesion and easy separation when using glue to bond the surface film layer of existing building materials and furniture. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a double-sided adhesive film material, which makes the two materials bonded together more firmly and reliably by setting two adhesive layers corresponding to the two materials respectively.
[0005] The technical solution adopted by this utility model is as follows: a double-sided adhesive film material, including an adhesive layer and a protective layer disposed on the surface of the adhesive layer. The adhesive layer includes a hot melt adhesive layer and a pressure-sensitive adhesive layer. One side of the hot melt adhesive layer is connected to one side of the pressure-sensitive adhesive layer. The protective layer includes a first release layer and a second release layer. The first release layer is connected to the side of the hot melt adhesive layer away from the pressure-sensitive adhesive, and the second release layer is connected to the side of the pressure-sensitive adhesive layer away from the hot melt adhesive.
[0006] The double-sided adhesive film material of this application has two adhesive layers. The hot melt adhesive layer is bonded to the decorative film layer (decorative layer) of the furniture or building material during bonding, while the pressure-sensitive adhesive layer is bonded to the base layer of the furniture or building material. That is, different adhesive layers are used for different adhesive materials, making the bonding more firm and reliable, and the appearance after bonding is also more beautiful. The first release layer is used to protect the hot melt adhesive layer and the second release layer is used to protect the pressure-sensitive adhesive layer, so as to avoid contamination of the adhesive layers during transportation and storage, and ensure the bonding effect in subsequent use.
[0007] In some embodiments, a mesh is provided on the side of the first release layer near the hot melt adhesive layer and / or a mesh is provided on the side of the second release layer near the pressure-sensitive adhesive layer.
[0008] By employing the above technical solution, by setting a grid on the surface of the first release layer and / or the second release layer, air can be expelled between the first release layer and the hot melt adhesive layer during bonding, preventing air bubbles from forming between them. This results in a stronger bond between the first release layer and the hot melt adhesive, protecting the hot melt adhesive layer. Similarly, the grid on the second release layer can also expel air bubbles, resulting in a stronger bond between the second release layer and the pressure-sensitive adhesive layer, protecting the pressure-sensitive adhesive layer. Furthermore, after bonding, the grid on the first release layer will be imprinted on the surface of the hot melt adhesive layer, allowing air bubbles to escape through the grid when the hot melt adhesive layer is bonded to the decorative film layer, resulting in a tighter bond between the decorative film layer and the hot melt adhesive. Likewise, the grid on the surface of the second release layer will also be imprinted on the surface of the pressure-sensitive adhesive layer. This allows the grid to expel air when the pressure-sensitive adhesive layer is bonded to the base layer of the furniture or building material, resulting in a tighter bond between the pressure-sensitive adhesive layer and the base layer of the furniture or building material.
[0009] In some embodiments, the hot melt adhesive layer is made of one of TPU hot melt adhesive, EVA hot melt adhesive, or TPE hot melt adhesive.
[0010] By adopting the above technical solution, hot melt adhesives of different materials can be used to suit furniture or building materials of different materials according to actual needs, and the raw materials are widely available.
[0011] In some embodiments, the first release layer is one of PE release film, PET release film, BOPP release paper, or PP release paper.
[0012] By adopting the above technical solution, the material of the first release layer can be selected according to needs, and the sources are abundant, which helps to reduce costs.
[0013] In some embodiments, the second release layer is one of glassine paper, grid release paper, or grid release film.
[0014] Using the above technical solution, the raw materials are abundant, and the texture of the materials is relatively easy to form a mesh on the surface of the pressure-sensitive adhesive layer.
[0015] In some embodiments, the thickness of the hot melt adhesive layer ranges from 0.02 to 0.05 mm, and the weight per unit area ranges from 20 to 60 g / m².
[0016] By adopting the above technical solution, the hot melt adhesive layer can maintain a soft texture while ensuring the bonding effect.
[0017] In some embodiments, the thickness of the pressure-sensitive adhesive layer ranges from 0.03 to 0.05 mm, and the weight per unit area ranges from 35 to 60 g / m².
[0018] By adopting the above technical solution, the pressure-sensitive adhesive layer can maintain a soft texture while ensuring the bonding effect.
[0019] In some embodiments, the thickness of the first release layer ranges from 0.02 to 0.03 mm, and the weight per unit area ranges from 15 to 30 g / m².
[0020] By adopting the above technical solution, the cost can be reduced while ensuring the protection of hot melt adhesive.
[0021] In some embodiments, the thickness of the second release layer ranges from 0.1 to 0.15 mm, and the weight per unit area ranges from 90 to 110 g / m².
[0022] By adopting the above technical solution, the second release layer is made harder, which can better protect the pressure-sensitive adhesive layer. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of a double-sided adhesive film material according to a preferred embodiment of the present invention;
[0024] Figure 2 for Figure 1 The diagram shows the structure of the second release layer in the double-sided adhesive film.
[0025] In the diagram: 10, adhesive layer; 11, hot melt adhesive layer; 12, pressure-sensitive adhesive layer; 20, protective layer; 21, first release layer; 22, second release layer. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0028] Unless otherwise defined, 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 invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0029] Please see Figures 1 to 2 A preferred embodiment of the present invention provides a double-sided adhesive film material, comprising an adhesive layer 10 and a protective layer 20 disposed on the surface of the adhesive layer 10. The adhesive layer 10 includes a hot melt adhesive layer 11 and a pressure-sensitive adhesive layer 12, with one side of the hot melt adhesive layer 11 connected to one side of the pressure-sensitive adhesive layer 12. The protective layer 20 includes a first release layer 21 and a second release layer 22, with the first release layer 21 connected to the side of the hot melt adhesive layer 11 away from the pressure-sensitive adhesive, and the second release layer 22 connected to the side of the pressure-sensitive adhesive layer 12 away from the hot melt adhesive. The double-sided adhesive film of this application has two adhesive layers 10. The hot melt adhesive layer 11 is bonded to the decorative film layer (decorative layer) of the furniture or building material during bonding, while the pressure-sensitive adhesive layer 12 is bonded to the base layer of the furniture or building material. That is, different adhesive layers 10 are used for different bonding materials, making the bonding more firm and reliable, and the appearance after bonding is also more beautiful. The first release layer 21 is used to protect the hot melt adhesive layer 11 and the second release layer 22 is used to protect the pressure-sensitive adhesive layer 12, so as to prevent the adhesive layers 10 from being contaminated during transportation and storage, and to ensure the bonding effect in subsequent use.
[0030] In one embodiment, such as Figure 2As shown, a mesh is provided on the side of the first release layer 21 near the hot melt adhesive layer 11 and / or a mesh is provided on the side of the second release layer 22 near the pressure-sensitive adhesive layer 12. By providing a mesh on the surface of the first release layer 21, air can be expelled between the first release layer 21 and the hot melt adhesive layer 11 when they are bonded together, preventing air bubbles from forming between the first release layer 21 and the hot melt adhesive layer 11, thus making the first release layer 21 and the hot melt adhesive adhere more closely to protect the hot melt adhesive layer 11. Similarly, by providing a mesh on the surface of the second release layer 22, air bubbles can also be expelled from the mesh on the second release layer 22, making the second release layer 22 adhere more closely to the pressure-sensitive adhesive layer 12 to protect the pressure-sensitive adhesive layer 12. Furthermore, the mesh on the first release layer 21 will be imprinted onto the surface of the hot melt adhesive layer 11 after lamination, forming a mesh on the surface of the hot melt adhesive layer 11. This allows air bubbles to escape through the mesh when the hot melt adhesive layer 11 is lamination with the decorative film layer, resulting in a tighter bond between the decorative film layer and the hot melt adhesive. Similarly, the mesh on the surface of the second release layer 22 will also be imprinted onto the surface of the pressure-sensitive adhesive layer 12. This allows air to escape from the mesh on the surface of the pressure-sensitive adhesive layer 12 when it is lamination with the base layer of the furniture or building material, preventing air bubbles from forming between the pressure-sensitive adhesive layer 12 and the base layer of the furniture or building material, resulting in a tighter bond between the pressure-sensitive adhesive layer 12 and the base layer of the furniture or building material.
[0031] Optionally, the grid provided on the surface of the first release layer 21 and / or the second release layer 22 can be either raised or recessed.
[0032] Optionally, the hot melt adhesive layer 11 can be made of one of the following: TPU hot melt adhesive (thermoplastic polyurethane hot melt adhesive), EVA hot melt adhesive (ethylene-vinyl acetate copolymer hot melt adhesive), or TPE hot melt adhesive (thermoplastic elastomer hot melt adhesive). Different hot melt adhesive materials can be used according to actual needs to suit different furniture or building materials, and the raw materials are widely available.
[0033] Optionally, the first release layer 21 is one of PE release film (polyethylene release film), PET release film (polyethylene terephthalate release film), BOPP release paper (biaxially oriented polypropylene release paper), or PP release paper (polypropylene release paper). The material of the first release layer 21 can be selected according to requirements, and the sources are abundant, which helps to reduce costs.
[0034] Optionally, the second release layer 22 is one of glassine paper, grid release paper, or grid release film. The above materials are used as the second release layer 22 because the raw materials of the above materials are abundant, and the material texture is relatively easy to form a grid on the surface of the pressure-sensitive adhesive layer 12.
[0035] Preferably, the thickness of the hot melt adhesive layer 11 ranges from 0.02 to 0.05 mm, and the weight per unit area ranges from 20 to 60 g / m². Having the thickness and weight per unit area of the hot melt adhesive layer 11 within these ranges ensures effective adhesion while maintaining a soft texture.
[0036] Preferably, the thickness of the pressure-sensitive adhesive layer 12 ranges from 0.03 to 0.05 mm, and the weight per unit area ranges from 35 to 60 g / m². Having the thickness and weight per unit area of the pressure-sensitive adhesive layer 12 within these ranges ensures effective adhesion while maintaining a soft texture.
[0037] Preferably, the thickness of the first release layer 21 ranges from 0.02 to 0.03 mm, and the weight per unit area ranges from 15 to 30 g / m². Having the thickness and weight per unit area of the first release layer 21 within these ranges allows for cost reduction while ensuring effective protection of the hot melt adhesive.
[0038] Preferably, the thickness of the second release layer 22 ranges from 0.1 to 0.15 mm, and the weight per unit area ranges from 90 to 110 g / m². The thickness and weight per unit area of the second release layer 22 fall within these ranges, resulting in a relatively hard texture that protects the pressure-sensitive adhesive layer 12 while ensuring the formation of a distinct mesh on its surface.
[0039] During bonding, the second release layer 22 can be peeled off first, and then the pressure-sensitive adhesive layer 12 can be bonded to the base layer of the furniture or building material. To ensure a good bond, pressure needs to be applied while bonding. Next, the first release layer 21 is peeled off, the hot melt adhesive layer 11 is heated to a suitable temperature, and then the hot melt adhesive layer 11 is bonded to the decorative film layer of the furniture or building material. The double-sided adhesive film of this application uses two adhesive layers, each used to bond different materials, making bonding convenient and flexible, expanding the range of materials that can be bonded, and resulting in a stronger bond.
[0040] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A double-sided adhesive film material, comprising an adhesive layer (10) and a protective layer (20) disposed on the surface of the adhesive layer (10), characterized in that, The adhesive layer (10) includes a hot melt adhesive layer (11) and a pressure-sensitive adhesive layer (12). One side of the hot melt adhesive layer (11) is connected to one side of the pressure-sensitive adhesive layer (12). The protective layer (20) includes a first release layer (21) and a second release layer (22). The first release layer (21) is connected to the side of the hot melt adhesive layer (11) away from the pressure-sensitive adhesive, and the second release layer (22) is connected to the side of the pressure-sensitive adhesive layer (12) away from the hot melt adhesive.
2. The double-sided adhesive film material according to claim 1, characterized in that, The first release layer (21) has a mesh on the side near the hot melt adhesive layer (11) and / or the second release layer (22) has a mesh on the side near the pressure-sensitive adhesive layer (12).
3. The double-sided adhesive film material according to claim 1, characterized in that, The hot melt adhesive layer (11) is made of one of the following materials: TPU hot melt adhesive, EVA hot melt adhesive, or TPE hot melt adhesive.
4. The double-sided adhesive film material according to claim 1, characterized in that, The first release layer (21) is one of PE release film, PET release film, BOPP release paper, or PP release paper.
5. The double-sided adhesive film material according to claim 1, characterized in that, The second release layer (22) is one of glassine paper, grid release paper or grid release film.
6. The double-sided adhesive film material according to claim 1, characterized in that, The thickness of the hot melt adhesive layer (11) ranges from 0.02 to 0.05 mm, and the weight per unit area ranges from 20 to 60 g / m².
7. The double-sided adhesive film material according to claim 1, characterized in that, The thickness of the pressure-sensitive adhesive layer (12) ranges from 0.03 to 0.05 mm, and the weight per unit area ranges from 35 to 60 g / m².
8. The double-sided adhesive film material according to claim 1, characterized in that, The thickness of the first release layer (21) ranges from 0.02 to 0.03 mm, and the weight per unit area ranges from 15 to 30 g / m².
9. The double-sided adhesive film material according to claim 1, characterized in that, The thickness of the second release layer (22) ranges from 0.1 to 0.15 mm, and the weight per unit area ranges from 90 to 110 g / m².