A double-sided tape for preventing edge warping and pressing.

Abstract

This utility model discloses a double-sided adhesive tape for preventing edge curling and pressing, comprising a substrate layer; a double-sided adhesive layer coated on both sides of the substrate layer; an edge reinforcement strip disposed on both edges of the double-sided adhesive layer, the edge reinforcement strip being composed of an adhesive with a higher bonding strength than the double-sided adhesive layer and having a striped texture on its surface; embedded fiber strips embedded in the edge reinforcement strips along the length of the double-sided adhesive tape to enhance the edge tensile strength; and a release film layer covering the outer surfaces of the double-sided adhesive layer and the edge reinforcement strips. This utility model, by setting reinforcement strips at the edges of the double-sided adhesive tape and combining them with striped texture and embedded fiber strips, significantly improves the edge's peel resistance and tensile strength, effectively solving the problem of edge curling caused by uneven stress or environmental changes in traditional double-sided adhesive tapes.

Description

Technical Field

[0001] This utility model relates to the field of double-sided tape technology, and in particular to a double-sided tape that prevents edge curling and pressing. Background Technology

[0002] Existing double-sided tapes typically consist of a substrate and adhesive coated on both sides, and are widely used for bonding various materials. However, during use, the edges of traditional double-sided tapes are prone to lifting due to uneven stress, changes in ambient temperature and humidity, or material aging, leading to bonding failure or affecting appearance. Furthermore, the edge areas often exhibit insufficient bonding strength during pressing, resulting in easy peeling over long-term use. While existing technologies offer solutions to improve adhesion by increasing adhesive layer thickness or modifying adhesive formulations, these methods increase costs and have limited effectiveness, failing to effectively solve the problems of edge lifting and insufficient pressing strength. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a double-sided adhesive tape for preventing edge warping and pressing.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A double-sided adhesive tape for preventing edge warping and pressing includes a substrate layer; a double-sided adhesive layer coated on both sides of the substrate layer; an edge reinforcement strip disposed on both sides of the double-sided adhesive layer, the edge reinforcement strip being composed of an adhesive with a higher bonding strength than the double-sided adhesive layer and having a striped texture on its surface; an embedded fiber strip embedded in the edge reinforcement strip along the length of the double-sided adhesive tape to enhance the edge tensile strength; and a release film layer covering the outer surfaces of the double-sided adhesive layer and the edge reinforcement strip.

[0005] Preferably, the substrate layer is made of polyester film or polypropylene film with a thickness of 0.02 to 0.05 mm.

[0006] Preferably, the double-sided adhesive layer is made of acrylic pressure-sensitive adhesive with a thickness of 0.03 to 0.06 mm; the adhesive of the edge reinforcing strip is silicone-modified acrylic adhesive, with an adhesive strength 15% to 25% higher than that of the double-sided adhesive layer.

[0007] Preferably, the width of the edge reinforcement strip is 0.5 to 2 mm, the depth of the strip texture is 0.01 to 0.02 mm, and the texture spacing is 0.05 to 0.1 mm.

[0008] Preferably, the embedded fiber strips are glass fiber strips with a diameter of 0.01 to 0.03 mm and a spacing of 0.2 to 0.5 mm.

[0009] Preferably, the release film layer is a silicone oil release film with a thickness of 0.03 to 0.05 mm.

[0010] This utility model has the following beneficial effects: 1. This utility model significantly improves the peel resistance and tensile strength of the double-sided tape by setting a reinforcing strip on the edge and combining it with striped texture and embedded fiber strips, effectively solving the problem of edge curling caused by uneven stress or environmental changes in traditional double-sided tape.

[0011] 2. The edge reinforcement tape uses high-adhesion silicone-modified acrylic adhesive; the striped texture increases the contact area and further enhances the edge bonding stability; the embedded glass fiber strip provides additional tensile strength, allowing the tape to maintain smooth edges even in high temperature and high humidity or low temperature environments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the double-sided tape structure; Figure 2 for Figure 1 A magnified schematic diagram of the local structure at point A in the middle.

[0013] In the diagram: 1. Substrate layer; 2. Double-sided adhesive layer; 3. Edge reinforcement strip; 4. Striped texture; 5. Embedded fiber strip; 6. Release film layer. 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 for preventing edge warping and pressing includes a substrate layer 1; a double-sided adhesive layer 2 coated on both sides of the substrate layer 1; an edge reinforcing strip 3 disposed on both sides of the double-sided adhesive layer 2, the edge reinforcing strip 3 being composed of an adhesive with a bonding strength higher than that of the double-sided adhesive layer 2, and having a striped texture 4 on its surface; an embedded fiber strip 5 embedded in the edge reinforcing strip 3 along the length direction of the double-sided adhesive tape to enhance the edge tensile strength; and a release film layer 6 covering the outer surfaces of the double-sided adhesive layer 2 and the edge reinforcing strip 3.

[0016] In this embodiment, the substrate layer 1 provides overall flexibility and strength, the double-sided adhesive layer 2 is coated on both sides of the substrate layer 1 to ensure uniform adhesion, the edge reinforcement strip 3 uses a high-adhesion adhesive and has a striped texture 4 to increase edge adhesion and peel resistance, the embedded fiber strip 5 is embedded in the edge reinforcement strip 3 to enhance edge tensile strength and prevent edge curling, and the release film layer 6 covers the outer surface of the double-sided adhesive layer 2 and the edge reinforcement strip 3 for easy peeling and use. This structure effectively solves the problems of edge curling and insufficient compression strength of traditional double-sided tapes, improves adhesion stability and durability, is suitable for a variety of high-requirement adhesion scenarios, has industrial applicability, and is easy to produce and promote.

[0017] In this invention, the substrate layer 1 is made of polyester film or polypropylene film with a thickness of 0.02 to 0.05 mm.

[0018] In this embodiment, the substrate layer 1 is made of polyester film or polypropylene film with a thickness of 0.02-0.05 mm, providing flexibility and mechanical strength for the double-sided tape and ensuring overall structural stability. The double-sided adhesive layer 2 is coated on both sides of the substrate layer 1, providing uniform adhesion. The edge reinforcement strip 3 uses a high-adhesion adhesive with striped texture 4 to improve edge adhesion and peel resistance. Embedded fiber strips 5 are embedded in the edge reinforcement strip 3 along the length direction to enhance edge tensile strength and effectively prevent edge curling. The release film layer 6 covers the outer surface of the double-sided adhesive layer 2 and the edge reinforcement strip 3 for easy peeling and use. This design, through the thin and high-strength characteristics of the substrate layer 1 combined with other structures, significantly improves the anti-curling and edge-pressing performance, making it suitable for industrial and consumer applications while balancing cost and practicality.

[0019] In this invention, the double-sided adhesive layer 2 is made of acrylic pressure-sensitive adhesive with a thickness of 0.03 to 0.06 mm; the adhesive of the edge reinforcing strip 3 is silicone-modified acrylic adhesive, and its bonding strength is 15% to 25% higher than that of the double-sided adhesive layer 2.

[0020] In this embodiment, the double-sided adhesive layer 2 uses acrylic pressure-sensitive adhesive with a thickness of 0.03-0.06 mm, providing uniform initial tack and holding power to ensure the overall bonding performance of the tape. The edge reinforcement strip 3 uses silicone-modified acrylic adhesive, with a bonding strength 15%-25% higher than that of the double-sided adhesive layer 2, and has a striped texture 4, which significantly improves the edge adhesion and peel resistance. The embedded fiber strip 5 is embedded in the edge reinforcement strip 3 and distributed along the length of the tape to enhance the edge tensile strength and prevent edge lifting. The substrate layer 1 provides support for the double-sided adhesive layer 2. The release film layer 6 covers the outer surface of the double-sided adhesive layer 2 and the edge reinforcement strip 3 for easy peeling. This design optimizes the edge strength and anti-lifting effect through the differentiated adhesive formulation of the double-sided adhesive layer 2 and the edge reinforcement strip 3, making it suitable for high-requirement bonding scenarios and easy for industrial production.

[0021] In this invention, the width of the edge reinforcement strip 3 is 0.5-2mm, the depth of the strip texture 4 is 0.01-0.02mm, and the texture spacing is 0.05-0.1mm.

[0022] In this embodiment, the edge reinforcement strip 3 has a width of 0.5–2 mm and is made of high-adhesion silicone-modified acrylic adhesive. The surface has a striped texture 4 with a texture depth of 0.01–0.02 mm and a spacing of 0.05–0.1 mm, which significantly increases the edge contact area and friction, and improves the peel resistance. The double-sided adhesive layer 2 is coated on both sides of the substrate layer 1 to provide uniform adhesion. The embedded fiber strip 5 is embedded in the edge reinforcement strip 3 along the length of the tape to enhance the edge tensile strength and effectively prevent edge lifting. The substrate layer 1 provides flexibility and strength for the overall structure. The release film layer 6 covers the outer surface of the double-sided adhesive layer 2 and the edge reinforcement strip 3 for easy peeling and use. This design optimizes the anti-lifting and pressing edge performance through the precise parameters of the edge reinforcement strip 3 and the striped texture 4, and is suitable for fields such as electronics and automobiles, combining high performance and production feasibility.

[0023] In this invention, the embedded fiber strip 5 is a glass fiber strip with a diameter of 0.01 to 0.03 mm and a spacing of 0.2 to 0.5 mm.

[0024] In this embodiment, the embedded fiber strips 5 are glass fiber strips with a diameter of 0.01-0.03 mm and a spacing of 0.2-0.5 mm. They are embedded in the edge reinforcement strip 3 and distributed along the length of the double-sided tape, significantly enhancing the edge tensile strength and effectively preventing edge curling. The edge reinforcement strip 3 uses high-adhesion silicone-modified acrylic adhesive with a striped texture 4 on the surface, improving edge adhesion and peel resistance. The double-sided adhesive layer 2 is coated on both sides of the substrate layer 1, providing uniform adhesion. The substrate layer 1 provides flexibility and structural support for the tape. The release film layer 6 covers the outer surface of the double-sided adhesive layer 2 and the edge reinforcement strip 3, facilitating peeling and use. This design, through the precise size and distribution of the embedded fiber strips 5, combined with the edge reinforcement strip 3, optimizes the anti-curling and pressing edge performance, making it suitable for bonding needs in industrial and consumer fields, balancing cost and practicality.

[0025] In this invention, the release film layer 6 is a silicone oil release film with a thickness of 0.03 to 0.05 mm.

[0026] In this embodiment, the release film layer 6 is a silicone oil release film with a thickness of 0.03-0.05 mm, covering the outer surface of the double-sided adhesive layer 2 and the edge reinforcement strip 3. This facilitates tape peeling and use, and protects the bonding surface from contamination. The double-sided adhesive layer 2 is coated on both sides of the substrate layer 1 to provide uniform adhesion. The edge reinforcement strip 3 uses high-adhesion silicone-modified acrylic adhesive with striped texture 4 on the surface to enhance edge adhesion and peel resistance. Embedded fiber strips 5 are embedded in the edge reinforcement strip 3 and distributed along the length of the tape to enhance edge tensile strength and prevent edge curling. The substrate layer 1 provides flexibility and strength to the tape. This design, through the thin silicone oil material of the release film layer 6 combined with other structures, optimizes the anti-curling and pressing edge performance, ensuring ease of use. It is suitable for high-requirement bonding scenarios such as electronics and automobiles, and combines high performance with production feasibility.

[0027] In use, first peel off the release film layer 6 covering the outer surface of the double-sided adhesive layer 2 and the edge reinforcement strip 3, and then stick the double-sided tape to the surface to be bonded. The substrate layer 1 provides flexibility and structural support to ensure the overall stability of the tape. The double-sided adhesive layer 2 uses acrylic pressure-sensitive adhesive to provide uniform initial tack and holding power for bonding. The edge reinforcement strip 3 is composed of silicone-modified acrylic adhesive with high bonding strength and has striped texture 4 on the surface. It improves edge adhesion and anti-peeling ability by increasing the contact area and friction. The embedded fiber strip 5 is a glass fiber strip embedded in the edge reinforcement strip 3 and distributed along the length of the tape to enhance the edge tensile strength and prevent edge lifting caused by external force or environmental changes. This design effectively improves the strength of the pressed edge and anti-lifting performance through the synergistic effect of each structure, and is suitable for a variety of high-requirement bonding scenarios.

[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 for preventing edge warping and pressing, characterized in that, include: Substrate layer (1); A double-sided adhesive layer (2) is applied to both sides of the substrate layer (1); Edge reinforcement strip (3) is provided on both sides of the double-sided adhesive layer (2). The edge reinforcement strip (3) is composed of an adhesive with a bonding strength higher than that of the double-sided adhesive layer (2) and has a striped texture (4) on its surface. An embedded fiber strip (5) is embedded in the edge reinforcement strip (3) along the length direction of the double-sided tape to enhance the edge tensile strength; Release film layer (6) covers the outer surface of the double-sided adhesive layer (2) and the edge reinforcement strip (3).

2. The double-sided adhesive tape for preventing edge warping and pressing according to claim 1, characterized in that, The substrate layer (1) is made of polyester film or polypropylene film with a thickness of 0.02 to 0.05 mm.

3. The double-sided adhesive tape for preventing edge warping and pressing according to claim 1, characterized in that, The double-sided adhesive layer (2) is made of acrylic pressure-sensitive adhesive with a thickness of 0.03 to 0.06 mm; the adhesive of the edge reinforcing strip (3) is silicone-modified acrylic adhesive, and the bonding strength is 15% to 25% higher than that of the double-sided adhesive layer (2).

4. The double-sided adhesive tape for preventing edge warping and pressing according to claim 1, characterized in that, The width of the edge reinforcement strip (3) is 0.5 to 2 mm, the depth of the strip texture (4) is 0.01 to 0.02 mm, and the texture spacing is 0.05 to 0.1 mm.

5. The double-sided adhesive tape for preventing edge warping and pressing according to claim 1, characterized in that, The embedded fiber strip (5) is a glass fiber strip with a diameter of 0.01 to 0.03 mm and a spacing of 0.2 to 0.5 mm.

6. The double-sided adhesive tape for preventing edge warping and pressing according to claim 1, characterized in that, The release film layer (6) is a silicone oil release film with a thickness of 0.03 to 0.05 mm.

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