A double-sided tape with edge spill prevention adhesive
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-28
- Publication Date
- 2026-08-11
AI Technical Summary
然而，在实际使用中，尤其是在高精度粘接场景，如电子产品屏幕贴合、薄膜粘接等，由于施加压力或胶体流动性，胶粘剂容易从胶带边缘溢出，导致以下问题：溢胶污染粘接面，影响产品外观和性能；溢胶可能粘附到其他部件，增加清洁成本或导致组装失败；溢胶可能导致粘接强度不均，影响使用寿命
本实用新型通过在双面胶带边缘设置防溢边结构，包括隔离层和吸胶槽，有效防止胶粘剂在受压时从边缘溢出，隔离层作为物理屏障，阻挡胶粘剂向外流动，吸胶槽通过毛细作用和空间容纳吸收溢出胶体，避免污染粘接面或粘附其他部件，相比传统通过减少胶层厚度或调整胶粘剂配方的方案，本设计无需牺牲粘接强度即可实现防溢效果，保持粘接面清洁，确保粘接质量稳定，特别适用于电子产品屏幕贴合等高精度场景，显著提升产品外观和性能可靠性，同时降低清洁成本和组装失败率，具有较高的实用价值。
Smart Images
Figure CN224619869U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of double-sided tape technology, and in particular to a double-sided tape with edge anti-overflow adhesive. Background Technology
[0002] Existing double-sided tapes typically consist of a substrate and adhesive coated on both sides of the substrate, and are widely used for bonding and fixing. However, in practical applications, especially in high-precision bonding scenarios such as screen bonding in electronic products and film bonding, adhesive can easily overflow from the edges of the tape due to applied pressure or adhesive flow, leading to the following problems: excess adhesive contaminates the bonding surface, affecting the product's appearance and performance; excess adhesive may adhere to other components, increasing cleaning costs or causing assembly failure; excess adhesive may lead to uneven bonding strength, affecting the tape's lifespan.
[0003] In existing technologies, some double-sided tapes reduce the risk of adhesive overflow by reducing the adhesive layer thickness or adjusting the adhesive formulation. However, these methods often sacrifice bond strength or increase production costs, making it difficult to simultaneously achieve anti-overflow and high bonding performance. Therefore, there is an urgent need for a double-sided tape that is simple in structure, low in cost, and can effectively prevent edge overflow. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a double-sided adhesive tape with edge spill prevention.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A double-sided adhesive tape with edge spill prevention includes a substrate layer located at the center of the double-sided adhesive tape for providing structural support; an adhesive layer coated on the upper and lower surfaces of the substrate layer for bonding; an anti-overflow edge structure disposed on both sides of the double-sided adhesive tape and extending along the length of the tape, the anti-overflow edge structure including a release layer and an adhesive absorption groove, the release layer being located at the edge of the adhesive layer for preventing adhesive from overflowing outwards, the adhesive absorption groove being located inside the release layer for absorbing adhesive overflowing under pressure; and a release film covering the outer surface of the adhesive layer for protecting the adhesive layer.
[0006] Preferably, the substrate layer is made of polyethylene terephthalate or polyimide, and has a thickness of 10-100 μm.
[0007] Preferably, the adhesive layer is made of acrylic glue, silicone glue or rubber-based adhesive, and the thickness of a single layer is 10-50μm.
[0008] Preferably, the isolation layer is made of a polymer film with a thickness of 5-20 μm and a width of 0.5-2 mm.
[0009] Preferably, the depth of the adhesive suction groove is 50% to 80% of the thickness of the adhesive layer, and the width is 0.3 to 1 mm.
[0010] Preferably, the release film is made of PET or paper and has a thickness of 20-100μm.
[0011] This utility model has the following beneficial effects: This invention effectively prevents adhesive from overflowing from the edge of double-sided tape by setting an anti-overflow structure, including an isolation layer and an adhesive absorption groove. The isolation layer acts as a physical barrier to prevent the adhesive from flowing outward, while the adhesive absorption groove absorbs the overflowing adhesive through capillary action and spatial containment, preventing contamination of the bonding surface or adhesion to other parts. Compared with traditional solutions that reduce the adhesive layer thickness or adjust the adhesive formulation, this design achieves the anti-overflow effect without sacrificing bond strength, keeping the bonding surface clean and ensuring stable bonding quality. It is particularly suitable for high-precision scenarios such as screen bonding in electronic products, significantly improving product appearance and performance reliability while reducing cleaning costs and assembly failure rates, thus possessing high practical value. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the double-sided tape structure; Figure 2 for Figure 1 Enlarged view of the local structure at point A in the middle.
[0013] In the diagram: 1. Substrate layer; 2. Adhesive layer; 3. Anti-overflow structure; 301. Isolation layer; 302. Adhesive suction groove; 4. Release film. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0015] Reference Figure 1-2 A double-sided adhesive tape with edge spill prevention includes a substrate layer 1 located at the center of the double-sided adhesive tape for providing structural support; an adhesive layer 2 coated on the upper and lower surfaces of the substrate layer 1 for bonding; an anti-overflow edge structure 3 disposed on both sides of the double-sided adhesive tape and extending along the length of the tape, the anti-overflow edge structure 3 including an isolation layer 301 and an adhesive absorption groove 302, the isolation layer 301 being located at the edge of the adhesive layer 2 for preventing adhesive from overflowing outwards, the adhesive absorption groove 302 being located inside the isolation layer 301 for absorbing adhesive overflowing under pressure; and a release film 4 covering the outer surface of the adhesive layer 2 for protecting the adhesive layer 2.
[0016] In this embodiment, the substrate layer 1 provides structural support to ensure the overall stability of the tape. The adhesive layer 2 is coated on both sides of the substrate layer 1 to achieve reliable bonding. The anti-overflow structure 3 is set at the edge of the tape and includes an isolation layer 301 and an adhesive absorption groove 302. The isolation layer 301 prevents adhesive from overflowing and keeps the bonding surface clean. The adhesive absorption groove 302 absorbs the adhesive that overflows when pressure is applied, avoiding contamination or uneven bonding strength. The release film 4 covers the adhesive layer 2 to protect its surface from contamination or damage. This design effectively prevents adhesive overflow, improves the reliability of high-precision bonding scenarios, has a simple structure, low cost, and is suitable for fields such as electronics and automobiles, with significant practicality and economy.
[0017] Preferably, the substrate layer 1 is made of polyethylene terephthalate or polyimide, and has a thickness of 10-100 μm.
[0018] In this embodiment, the substrate layer 1 is made of polyethylene terephthalate or polyimide with a thickness of 10-100μm. It provides core structural support for the double-sided tape, ensuring the tape's flexibility and mechanical strength. Together with the adhesive layer 2, it achieves stable bonding. The isolation layer 301 and adhesive absorption groove 302 in the anti-overflow structure 3 prevent adhesive overflow and keep the bonding surface clean. The release film 4 protects the adhesive layer 2 from external contamination. The material selection of the substrate layer 1 takes into account both high temperature resistance and tensile strength, and the thickness range is suitable for different application scenarios. Working in synergy with the anti-overflow structure 3, it effectively improves the reliability of the tape in high-precision bonding. It is suitable for fields such as electronic products and automotive interiors. It has a simple structure, low production cost, and good industrial applicability.
[0019] Preferably, the adhesive layer 2 is made of acrylic adhesive, silicone adhesive or rubber adhesive, and the thickness of a single layer is 10-50μm.
[0020] In this embodiment, the adhesive layer 2 uses acrylic adhesive, silicone adhesive, or rubber-based adhesive, with a single layer thickness of 10-50μm. It is coated on both sides of the substrate layer 1, providing excellent bonding performance and ensuring that the double-sided tape is firmly bonded. The isolation layer 301 in the anti-overflow structure 3 prevents the adhesive from overflowing, and the adhesive absorption groove 302 absorbs the adhesive that overflows under pressure, preventing contamination of the bonding surface. The release film 4 covers the adhesive layer 2, protecting it from external damage or contamination. The material selection of the adhesive layer 2 takes into account both bonding strength and environmental adaptability, and the thickness design ensures a balance between bonding effect and anti-overflow function. It works synergistically with the substrate layer 1 and the anti-overflow structure 3 to significantly improve the reliability of the tape in high-precision bonding scenarios such as electronics and automobiles. The structure is simple, the cost is low, and it has good industrial practicality and promotional value.
[0021] Preferably, the isolation layer 301 is made of a polymer film with a thickness of 5-20 μm and a width of 0.5-2 mm.
[0022] In this embodiment, the isolation layer 301 is made of a polymer film material with a thickness of 5-20μm and a width of 0.5-2mm. It is set at the edge of the adhesive layer 2 and extends along the length of the double-sided tape. It effectively prevents the adhesive from overflowing outward, keeps the bonding surface clean, and works with the adhesive absorption groove 302 to absorb the adhesive that overflows under pressure, preventing contamination or uneven bonding strength. The substrate layer 1 provides structural support to ensure the overall stability of the tape. The adhesive layer 2 achieves reliable bonding. The release film 4 protects the adhesive layer 2 from external contamination. The thickness and width design of the isolation layer 301 take into account both the anti-overflow effect and the simplicity of the production process. It works in conjunction with other parts of the anti-overflow edge structure 3 to significantly improve the reliability of the tape in high-precision bonding scenarios such as electronic products and automotive interiors. The structure is simple, the cost is low, and it is easy to mass-produce, with excellent industrial applicability.
[0023] Preferably, the depth of the adhesive suction groove 302 is 50% to 80% of the thickness of the adhesive layer 2, and the width is 0.3 to 1 mm.
[0024] In this embodiment, the adhesive suction groove 302 has a depth of 50% to 80% of the thickness of the adhesive layer 2 and a width of 0.3 to 1 mm. It is located inside the isolation layer 301 and extends along the length of the double-sided tape. Through capillary action and spatial containment, it absorbs the adhesive that overflows under pressure, effectively preventing the adhesive from overflowing and keeping the bonding surface clean. The isolation layer 301 blocks the flow of adhesive, the substrate layer 1 provides structural support, ensuring the overall stability of the tape, and the adhesive layer 2 achieves reliable bonding. The release film 4 protects the adhesive layer 2 from contamination. The depth and width design of the adhesive suction groove 302 optimizes the balance between the adhesive suction effect and the bonding performance of the adhesive layer 2. It works synergistically with other parts of the anti-overflow edge structure 3 to significantly improve the reliability of the tape in high-precision bonding scenarios such as electronics and automobiles. The structure is simple, easy to realize through laser etching or die-cutting processes, low in cost, and has excellent industrial applicability.
[0025] Preferably, the release film 4 is made of PET or paper and has a thickness of 20-100μm.
[0026] In this embodiment, the release film 4 is made of PET or paper release film material with a thickness of 20-100μm. It covers the outer surface of the adhesive layer 2, effectively protecting the adhesive layer 2 from external contamination or damage, ensuring the stability of the adhesive properties before bonding, and providing reliable bonding for the adhesive layer 2. The substrate layer 1 provides structural support for the double-sided tape. The isolation layer 301 in the anti-overflow structure 3 prevents adhesive from overflowing, and the adhesive absorption groove 302 absorbs the adhesive that overflows under pressure, preventing contamination of the bonding surface. The material and thickness design of the release film 4 take into account both the protective effect and the ease of peeling. It works synergistically with the anti-overflow structure 3 to significantly improve the reliability and ease of use of the tape in high-precision bonding scenarios such as electronics and automobiles. The structure is simple, the production cost is low, and it is easy to mass-produce, with excellent industrial practicality and market promotion value.
[0027] In use, first peel off the release film 4 covering the outer surface of the adhesive layer 2 to expose the adhesive layer 2. Apply the tape between the two surfaces to be bonded, applying appropriate pressure to ensure full contact between the adhesive layer 2 and the bonding surfaces for a strong bond. The substrate layer 1 is made of polyethylene terephthalate or polyimide, with a thickness of 10-100 μm, providing structural support and ensuring the overall stability of the tape. The adhesive layer 2 uses acrylic, silicone, or rubber-based adhesives, with a single layer thickness of 10-50 μm, ensuring bonding strength. During bonding, applying pressure may cause the adhesive to flow; the anti-overflow structure 3 plays a crucial role. The release layer 301 is a polymer film, 5-20 μm thick and 0.5-2 mm wide, and is placed on the adhesive... The edge of adhesive layer 2 physically prevents adhesive from overflowing. Adhesive absorption groove 302 is located inside the isolation layer 301, with a depth of 50% to 80% of the thickness of adhesive layer 2 and a width of 0.3 to 1 mm. It absorbs overflowing adhesive through capillary action and spatial containment, preventing contamination of the bonding surface or adhesion to other parts. Release film 4 protects adhesive layer 2 from contamination before bonding, ensuring adhesive performance. The overall working principle is that the substrate layer 1 provides support, adhesive layer 2 achieves bonding, anti-overflow structure 3 prevents adhesive overflow, and release film 4 protects the adhesive. The synergistic effect ensures clean bonding surface and uniform bonding strength in high-precision bonding scenarios. It is suitable for electronic product screen bonding, automotive interior fixing and other fields. It has a simple structure, is easy to operate, and has excellent anti-overflow effect and industrial applicability.
[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A double-sided adhesive tape with edge spill prevention, characterized in that, include: The substrate layer (1), located at the center of the double-sided tape, is used to provide structural support; An adhesive layer (2) is applied to the upper and lower surfaces of the substrate layer (1) to achieve the bonding function; An anti-overflow structure (3) is provided on both sides of the double-sided tape and extends along the length of the tape. The anti-overflow structure (3) includes an isolation layer (301) and an adhesive absorption groove (302). The isolation layer (301) is located at the edge of the adhesive layer (2) and is used to prevent the adhesive from overflowing outward. The adhesive absorption groove (302) is located inside the isolation layer (301) and is used to absorb the adhesive that overflows when pressure is applied. Release film (4) is applied to the outer surface of the adhesive layer (2) to protect the adhesive layer (2).
2. The double-sided adhesive tape for edge spill prevention according to claim 1, characterized in that, The substrate layer (1) is made of polyethylene terephthalate or polyimide and has a thickness of 10-100 μm.
3. The double-sided adhesive tape for edge spill prevention according to claim 1, characterized in that, The adhesive layer (2) is made of acrylic glue, silicone glue or rubber adhesive, and the thickness of a single layer is 10-50μm.
4. The double-sided adhesive tape for edge spill prevention according to claim 1, characterized in that, The isolation layer (301) is made of a polymer film with a thickness of 5-20 μm and a width of 0.5-2 mm.
5. A double-sided adhesive tape for edge spill prevention according to claim 1 or 4, characterized in that, The depth of the adhesive suction groove (302) is 50% to 80% of the thickness of the adhesive layer (2), and the width is 0.3 to 1 mm.
6. The double-sided adhesive tape for edge spill prevention according to claim 1, characterized in that, The release film (4) is made of PET or paper release film (4) with a thickness of 20-100μm.