Double faced adhesive tape with high bonding strength

Abstract

The utility model discloses a high bonding strength double faced adhesive tape which comprises a double faced adhesive tape body, a supporting base layer is arranged in the center of the inside of the double faced adhesive tape body, middle elastic buffer layers are arranged on the two sides of the supporting base layer, and reinforcing layers are arranged between the two middle elastic buffer layers and the supporting base layer. An adhesive layer is arranged on the outer side of each middle elastic buffer layer; sinking grooves are uniformly formed in the surface of the middle elastic buffer layer, and gullies and bulges are also uniformly arranged on the surface of the adhesive layer. The nano silicon dioxide particles are uniformly arranged in the adhesive layer, and the particles can obviously improve the adhesive force and aging resistance of the adhesive layer, so that the double-sided adhesive tape can keep excellent adhesion effect on the surfaces of different materials. In addition, the surface of the adhesive layer is uniformly provided with gullies and bulge structures, so that the contact area between the adhesive layer and the surface of an adhered object is increased, and the adhesion performance and the sealing performance are further improved.

Description

Technical Field

[0001] This utility model relates to the field of double-sided adhesive technology, specifically to a high-adhesion-strength double-sided adhesive. Background Technology

[0002] In modern industrial production and daily life, double-sided tape is a commonly used adhesive material, widely used in many fields such as electronic equipment, automobile manufacturing, building decoration, and packaging.

[0003] However, existing double-sided adhesives still have some problems that urgently need to be solved in practical use, specifically as follows: Regarding bonding strength and stability, traditional double-sided adhesives have a relatively simple structure, lacking effective support and reinforcement. Under significant external force or prolonged use, they are prone to deformation, cracking, or even detachment, failing to meet the requirements of applications with high bonding strength and stability, such as fixing components in electronic devices or bonding automotive interior parts. Regarding adhesion performance, existing adhesive layers often exhibit varying adhesion effects on different material surfaces, making it difficult to achieve good adhesion on various complex surfaces. Moreover, with increased usage time, the adhesive layer is prone to aging, leading to decreased adhesion and affecting the lifespan of the double-sided adhesive. Simultaneously, the limited contact area between the adhesive layer and the surface of the adhered object also limits adhesion performance and sealing properties. Utility Model Content

[0004] The purpose of this invention is to provide a high-adhesion double-sided adhesive to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-adhesion-strength double-sided adhesive, comprising a double-sided adhesive body, wherein a supporting base layer is disposed at the center of the double-sided adhesive body, and an intermediate elastic buffer layer is disposed on both sides of the supporting base layer, a reinforcing layer is disposed between the two intermediate elastic buffer layers and the supporting base layer, and an adhesive layer is disposed on the outer side of the intermediate elastic buffer layer, wherein nano-silica particles are uniformly disposed inside the adhesive layer.

[0006] The surface of the intermediate elastic buffer layer is uniformly provided with sinking grooves, and the surface of the adhesive layer is also uniformly provided with grooves and protrusions, and the grooves and protrusions are arranged alternately.

[0007] Release paper is provided on both sides of the double-sided adhesive body, and the release paper includes a base paper layer and a release layer. The bottom of the release layer is uniformly provided with raised strips, and a hole is provided at one corner of the base paper layer. Traction paper is provided inside the hole.

[0008] Preferably, the traction paper and the release layer of the release paper are fixedly connected.

[0009] Preferably, each of the protrusions corresponds one-to-one with each groove.

[0010] Preferably, the reinforcing layer is a glass fiber mesh layer, and the thickness of the reinforcing layer is approximately between 0.02 mm and 0.1 mm.

[0011] Preferably, the intermediate elastic buffer layer is made of an elastic polymer material, and the thickness of the intermediate elastic buffer layer is between 0.01mm and 0.05mm.

[0012] Preferably, the release paper is made of a biodegradable material that matches the biodegradable properties of the adhesive layer, and the thickness of the release paper is controlled between 0.05mm and 0.2mm.

[0013] This invention provides a high-adhesion-strength double-sided adhesive, which has significant advantages and positive effects compared to existing technologies, as detailed below:

[0014] 1. Improves bond strength and stability:

[0015] By setting a supporting base layer at the center inside the double-sided adhesive body, and setting intermediate elastic buffer layers and reinforcing layers on both sides, the overall structural strength and stability of the double-sided adhesive are significantly improved. The reinforcing layer is preferably a glass fiber mesh layer with a thickness controlled between 0.02mm and 0.1mm, which effectively improves the tensile strength and tear resistance of the double-sided adhesive, ensuring that it is not easily deformed or damaged during use.

[0016] 2. Optimize adhesion performance:

[0017] The adhesive layer contains uniformly distributed nano-silica particles, which significantly improve its adhesion and aging resistance, ensuring excellent adhesion to various materials. Furthermore, the uniformly distributed grooves and protrusions on the adhesive layer surface increase the contact area between the adhesive layer and the adhered surface, further enhancing adhesion and sealing performance.

[0018] 3. Enhanced cushioning and shock resistance:

[0019] The intermediate elastic buffer layer, especially its evenly distributed recessed groove design, effectively absorbs and disperses external impact forces, preventing adhesion failure caused by stress concentration. The intermediate elastic buffer layer is made of elastic polymer material with a thickness between 0.01mm and 0.05mm, ensuring good buffering performance while avoiding increased costs and reduced adhesion due to excessive thickness.

[0020] 4. Improve construction convenience:

[0021] The release paper design includes a base paper layer and a release layer. The bottom of the release layer features evenly spaced raised strips, making the double-sided adhesive easier to peel off and avoiding the tearing and residue problems common with traditional double-sided adhesives. A hole is located at one corner of the release paper, with a traction paper inside, allowing workers to quickly and easily peel off the release paper, improving construction efficiency.

[0022] 5. Outstanding environmental performance:

[0023] The release paper is made of biodegradable materials, matching the biodegradable properties of the adhesive layer. Its thickness is controlled between 0.05mm and 0.2mm, which not only meets the usage requirements but also significantly reduces the environmental pollution caused by waste, in line with the current trend of green and environmentally friendly development.

[0024] 6. Overall performance optimization:

[0025] Through the selection of optimal materials for each layer and the optimization of structural design, this novel double-sided adhesive exhibits outstanding performance in terms of bonding strength, cushioning properties, ease of application, and environmental friendliness, with overall performance significantly superior to existing technologies. In particular, the improvements in high bonding strength and impact resistance enable this double-sided adhesive to be widely used in fields requiring high-strength bonding and high reliability, such as electronic equipment, automobile manufacturing, and building decoration.

[0026] In summary, this utility model, through its unique technical concept and material selection, solves the shortcomings of existing double-sided adhesives in terms of bonding strength, cushioning performance, ease of construction, and environmental performance, and provides a high-bonding-strength double-sided adhesive with excellent comprehensive performance, demonstrating significant technological progress and positive market application prospects. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall internal structure of this utility model;

[0029] Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0030] Figure 3 This is a top view of the structural base paper layer of this utility model;

[0031] Figure 4This is a schematic diagram of the intermediate elastic buffer layer structure of this utility model;

[0032] Figure 5 This is a schematic diagram of the adhesive layer structure of this utility model;

[0033] In the diagram: 1. Double-sided adhesive body; 2. Release paper; 3. Holes; 4. Reinforcing layer; 5. Raised strips; 6. Base paper layer; 7. Release layer; 8. Adhesive layer; 9. Intermediate elastic buffer layer; 10. Support base layer; 11. Groove; 12. Traction paper; 13. Sinking groove; 14. Nano silica particles; 15. Protrusions. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0035] Please see Figure 1-5 The present invention provides an embodiment of a high-adhesion-strength double-sided adhesive, comprising a double-sided adhesive body 1, a supporting base layer 10 disposed at the center inside the double-sided adhesive body 1, and intermediate elastic buffer layers 9 disposed on both sides of the supporting base layer 10, and a reinforcing layer 4 disposed between the two intermediate elastic buffer layers 9 and the supporting base layer 10.

[0036] The reinforcing layer 4 is a glass fiber mesh layer, and the thickness of the reinforcing layer 4 is approximately between 0.02 mm and 0.1 mm.

[0037] A supporting base layer 10 is provided at the center of the double-sided adhesive body 1. The main function of the supporting base layer 10 is to provide structural support and ensure that the double-sided adhesive is not easily deformed during use. The supporting base layer 10 can be made of high-strength and high-toughness materials such as polyester film and polypropylene film, with a thickness of approximately 0.05mm-0.2mm.

[0038] Both sides of the supporting base layer 10 are provided with intermediate elastic buffer layers 9. The main function of the intermediate elastic buffer layers 9 is to absorb and disperse external stress, preventing the double-sided adhesive from failing due to stress concentration during use. The intermediate elastic buffer layers 9 can be made of materials with good elasticity and cushioning properties, such as polyurethane and rubber, with a thickness of approximately 0.1mm-0.3mm.

[0039] A reinforcing layer 4 is provided between each of the two intermediate elastic buffer layers 9 and the supporting base layer 10. The reinforcing layer 4 is a glass fiber mesh layer, the main function of which is to improve the overall strength and tear resistance of the double-sided adhesive. The thickness of the glass fiber mesh layer is approximately 0.02mm-0.1mm, and the mesh density can be selected according to actual needs to ensure that it provides sufficient strength without affecting the flexibility of the double-sided adhesive.

[0040] The double-sided adhesive body 1 has an adhesive layer 2 and an adhesive layer 3 on its upper and lower surfaces, respectively. Adhesive layers 2 and 3 use high-performance adhesives, exhibiting excellent adhesion and aging resistance. The thickness of the adhesive layers is approximately 0.01mm-0.05mm, and can be adjusted according to actual application requirements.

[0041] An adhesive layer 8 is provided on the outer side of the intermediate elastic buffer layer 9, and nano-silica particles 14 are uniformly disposed inside the adhesive layer 8.

[0042] The surface of the intermediate elastic buffer layer 9 is uniformly provided with sinkholes 13, and the surface of the adhesive layer 8 is also uniformly provided with grooves 11 and protrusions 15, with the grooves 11 and protrusions 15 alternating with each other.

[0043] The intermediate elastic buffer layer 9 is made of an elastic polymer material, and the thickness of the intermediate elastic buffer layer 9 is between 0.01mm and 0.05mm.

[0044] Intermediate elastic buffer layer 9: This layer is located at the center of the composite structure and is made of elastic polymer material with a thickness ranging from 0.01 mm to 0.05 mm.

[0045] Adhesive layer 8: It is set on the outside of the intermediate elastic buffer layer 9, and nano-silica particles 14 are uniformly distributed inside it.

[0046] Sinking trough 13: evenly distributed on the surface of the intermediate elastic buffer layer 9.

[0047] Grooves 11 and protrusions 15: are evenly distributed on the surface of the adhesive layer 8, and the grooves 11 and protrusions 15 are arranged alternately.

[0048] The intermediate elastic buffer layer 9 is made of a highly elastic polymer material to ensure that it can effectively absorb and disperse external forces during use. Specific materials may include silicone rubber. Its thickness is strictly controlled between 0.01mm and 0.05mm, a thickness range that ensures sufficient elasticity without compromising the overall structural compactness.

[0049] On the surface of the intermediate elastic buffer layer 9, there are evenly distributed sinking grooves 13. The depth and width of the sinking grooves 13 are designed according to specific application requirements, and their function is to further increase the elastic deformation capacity of the buffer layer and improve the overall buffering effect.

[0050] The adhesive layer 8 is disposed on the outside of the intermediate elastic buffer layer 9, and its main function is to achieve adhesion between the composite structure and other material surfaces. Nano-silica particles 14 are uniformly distributed inside the adhesive layer 8. The addition of nano-silica particles significantly improves the adhesive strength and durability of the adhesive layer, while also enhancing its anti-aging properties.

[0051] Grooves 11 and protrusions 15 are evenly distributed on the surface of the adhesive layer 8. The grooves 11 and protrusions 15 are arranged alternately to form a special surface texture structure. This structural design not only increases the surface area of ​​the adhesive layer and improves the bonding effect, but also effectively eliminates air bubbles generated during the bonding process, ensuring the strength of the bond.

[0052] Release paper 2 is also provided on both sides of the double-sided adhesive body 1. The release paper 2 is made of biodegradable material and matches the biodegradable characteristics of the adhesive layer 8. The thickness of the release paper 2 is controlled between 0.05mm and 0.2mm.

[0053] Release paper 2 is made of biodegradable materials, specifically biodegradable materials such as polylactic acid (PLA) and polycaprolactone (PCL), or cellulose-based materials such as regenerated cellulose membranes. These materials can be decomposed into harmless substances in the natural environment through the action of microorganisms, meeting environmental protection requirements.

[0054] The reason for choosing biodegradable materials is to match the biodegradable properties of adhesive layer 8. Adhesive layer 8 also uses biodegradable adhesives, such as natural rubber-based or starch-based adhesives. This matching design ensures that the entire double-sided tape will not cause long-term environmental pollution after use.

[0055] The thickness of release paper 2 is controlled between 0.05 mm and 0.2 mm. This thickness range is selected based on the following considerations:

[0056] Protective properties: Release paper with a thickness between 0.05mm and 0.2mm can effectively protect the adhesive layer 8, preventing it from being contaminated or damaged by external factors during transportation and storage.

[0057] Peeling performance: The appropriate thickness ensures that the release paper will not tear easily during peeling, while also not being too strong, allowing users to peel it off easily.

[0058] Material cost: Within this thickness range, the material cost is relatively low and can meet the usage requirements, resulting in a high cost-performance ratio.

[0059] Release paper 2 includes base paper layer 6 and release layer 7. The bottom of release layer 7 is uniformly provided with raised strips 5, and each raised strip 5 corresponds to each groove 11.

[0060] A hole 3 is provided at one corner of the base paper layer 6, and a traction paper 12 is placed inside the hole 3.

[0061] The traction paper 12 is fixedly connected to the release layer 7 of the release paper 2.

[0062] The overall structure of the release paper 2 includes the base paper layer 6 and the release layer 7. The base paper layer 6 serves as the basic support layer, providing the necessary strength and stability; the release layer 7 is responsible for realizing the release function, ensuring smooth peeling during use.

[0063] The bottom of the release layer 7 is uniformly provided with raised strips 5. Each raised strip 5 is 2mm wide, 1mm high, and 5mm apart. This design not only increases the surface friction of the release paper 2, but also plays a guiding role during the peeling process. Each raised strip 5 corresponds one-to-one with each groove 11. The width of the groove 11 is the same as that of the raised strip 5, and the depth is 1mm, ensuring that the raised strip 5 can be accurately embedded in the groove 11.

[0064] A hole 3 is provided at one corner of the base paper layer 6. The hole 3 facilitates the insertion and fixation of the traction paper 12, and also facilitates subsequent processing and use.

[0065] The traction paper 12 is inserted through the hole 3 and fixedly connected to the release layer 7. The traction paper 12 is made of high-strength fiber paper to ensure that it will not break during traction. One end of the traction paper 12 is firmly bonded to the surface of the release layer 7 with adhesive, and the other end protrudes outside the hole 3 for easy gripping and traction by the user.

[0066] When this application embodiment is used,

[0067] Materials Preparation: Support Base Material: Select high-strength, high-toughness materials such as polyester film or polypropylene film, controlling the thickness to 0.05mm-0.2mm. Intermediate Elastic Buffer Layer Material: Prepare high-elasticity polymer materials such as polyurethane, rubber, or silicone rubber, with a thickness ranging from 0.01mm-0.05mm (0.1mm-0.3mm for the central portion of the intermediate elastic buffer layer in the composite structure). Also prepare processing tools for constructing the sinkhole. Reinforcing Layer Material: Select glass fiber mesh layer material, controlling the thickness to approximately 0.02mm-0.1mm, and determine an appropriate mesh density. Adhesive Layer Material: Prepare high-performance adhesive, adjusting the thickness to 0.01mm-0.05mm according to actual application requirements. Adhesive Layer Material: Prepare adhesive material containing nano-silica particles, and also prepare processing tools for creating grooves and protrusions. Release paper material: Select biodegradable materials such as polylactic acid (PLA) and polycaprolactone (PCL) or regenerated cellulose film as release paper material, with the thickness controlled between 0.05mm and 0.2mm; prepare base paper layer material, prepare embossed strips with a width of 2mm, a height of 1mm, and a spacing of 5mm, and high-strength fiber paper as traction paper material, and prepare adhesive for fixing traction paper.

[0068] Making the layers of the double-sided tape body:

[0069] Install the support base: Place the support base material in the center of the double-sided tape body, ensuring its accurate positioning.

[0070] Apply intermediate elastic buffer layer: Apply intermediate elastic buffer layer material to both sides of the supporting base layer. If there is a sinkhole design, process the sinkhole evenly distributed on the surface of the intermediate elastic buffer layer in advance, and control the depth and width of the sinkhole to meet the design requirements.

[0071] Laying the reinforcement layer: Lay the reinforcement layer (fiberglass mesh layer) between the two intermediate elastic buffer layers and the supporting base layer, ensuring that the laying is flat.

[0072] Apply adhesive layer: Apply adhesive layer to the upper and lower surfaces of the double-sided tape body respectively, and control the thickness of the adhesive layer to meet the requirements.

[0073] Making the adhesive layer: Apply an adhesive layer to the outside of the middle elastic buffer layer, so that the nano-silica particles are evenly distributed inside the adhesive layer; process evenly distributed and alternating grooves and protrusions on the surface of the adhesive layer, and control the size of the grooves and protrusions to meet the design requirements (the width of the groove is the same as the protrusion, and the depth is 1mm).

[0074] Making release paper:

[0075] Composite base paper layer and release layer: The base paper layer and release layer are combined together to form the basic structure of release paper.

[0076] Processing holes and installing traction paper: Process holes at one corner of the base paper layer, insert the traction paper through the holes, and use adhesive to firmly bond one end of the traction paper to the release layer, leaving the other end exposed outside the holes.

[0077] Assemble the double-sided tape: Attach the prepared release paper to both sides of the double-sided tape body, ensuring that the raised strips of the release paper accurately align with the grooves of the adhesive layer and that the release paper is positioned correctly for easy peeling during subsequent use.

[0078] Quality Inspection: Appearance Inspection: Check whether the structure of each layer of the double-sided adhesive is complete and uniform, whether the surface is flat, and whether there are defects such as bubbles and impurities. Performance Inspection: Test the bonding strength, cushioning performance, and tear resistance of the double-sided adhesive, and check whether the release paper peels off well to ensure that the product meets the design requirements.

[0079] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0080] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0081] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0082] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-adhesion-strength double-sided adhesive, comprising a double-sided adhesive body (1), characterized in that: The double-sided adhesive body (1) has a supporting base layer (10) at its center, and a middle elastic buffer layer (9) is provided on both sides of the supporting base layer (10). A reinforcing layer (4) is provided between the two middle elastic buffer layers (9) and the supporting base layer (10), and an adhesive layer (8) is provided on the outer side of the middle elastic buffer layer (9). Nano silica particles (14) are uniformly provided inside the adhesive layer (8). The surface of the intermediate elastic buffer layer (9) is uniformly provided with sinkholes (13), and the surface of the adhesive layer (8) is also uniformly provided with grooves (11) and protrusions (15), and the grooves (11) and protrusions (15) are alternately provided. Release paper (2) is provided on both sides of the double-sided adhesive body (1), and the release paper (2) includes a base paper layer (6) and a release layer (7). The bottom of the release layer (7) is uniformly provided with raised strips (5). A hole (3) is provided at one corner of the base paper layer (6), and a traction paper (12) is provided inside the hole (3).

2. The high-adhesion-strength double-sided adhesive according to claim 1, characterized in that: The traction paper (12) is fixedly connected to the release layer (7) of the release paper (2).

3. The high-adhesion-strength double-sided adhesive according to claim 1, characterized in that: Each of the convex strips (5) corresponds one-to-one with each groove (11).

4. The high-adhesion-strength double-sided adhesive according to claim 1, characterized in that: The reinforcing layer (4) is a glass fiber mesh layer, and the thickness of the reinforcing layer (4) is approximately between 0.02 mm and 0.1 mm.

5. The high-adhesion-strength double-sided adhesive according to claim 1, characterized in that: The intermediate elastic buffer layer (9) is made of an elastic polymer material, and the thickness of the intermediate elastic buffer layer (9) is between 0.01mm and 0.05mm.

6. The high-adhesion-strength double-sided adhesive according to claim 1, characterized in that: The release paper (2) is made of a biodegradable material that matches the biodegradable properties of the adhesive layer (8), and the thickness of the release paper (2) is controlled between 0.05 mm and 0.2 mm.

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