Tensile double-faced adhesive tape and manufacturing method thereof

Abstract

The invention discloses a tensile double-faced adhesive tape and a manufacturing method thereof. The tensile double-faced adhesive tape sequentially comprises a first protective layer, a first tensile reinforcing layer, a first adhesive layer, a base layer, a second adhesive layer, a second tensile reinforcing layer and a second protective layer from top to bottom, the first tensile reinforcing layer and the second tensile reinforcing layer are high-strength aramid fiber woven meshes; the double-faced adhesive tape has the beneficial effects that the high-strength aramid fiber woven meshes are arranged in the double-faced adhesive tape structure to serve as the first tensile reinforcing layer and the second tensile reinforcing layer, so that the tensile capacity of the double-faced adhesive tape is remarkably improved; the first protective layer and the second protective layer are made of environment-friendly degradable plastic films, so that the pollution of traditional plastic films to the environment is reduced, and the current green and environment-friendly development concept is met; after being discarded, the product cannot be left in the environment for a long time, so that the negative influence on an ecological system is reduced, and a contribution is made to sustainable development.

Description

Technical Field

[0001] This invention belongs to the field of double-sided adhesive technology, specifically relating to a tensile-resistant double-sided adhesive and its manufacturing method. Background Technology

[0002] Double-sided tape has excellent adhesion, firmly bonding various materials such as paper, plastic, metal, and fabric. This adhesion comes from its special adhesive composition and unique manufacturing process, which allows double-sided tape to maintain a stable bonding effect in various environments. Double-sided tape is very convenient to use; simply peel off the protective film to easily stick two objects together. No additional tools or equipment are required, nor are any complicated processing steps necessary, greatly saving time and labor costs.

[0003] Patent publication number CN119463716A discloses an ultra-low temperature double-sided adhesive and its manufacturing process. The patent discloses a design comprising, from top to bottom, a first release paper, a first adhesive layer, a first composite layer, a base layer, a second composite layer, a second adhesive layer, and a second release paper. Both the first and second adhesive layers are formed by coating and curing with pressure-sensitive adhesive. The thickness ratio of the first composite layer, the base layer, and the second composite layer is 0.4–0.7:1:0.4–0.7. Specifically, the composite layer is a nanofiber layer, and the nanofibers are filled with… A process for manufacturing an ultra-low temperature double-sided adhesive includes: Step 1: Immersing an integrally formed first composite layer, base layer, and second composite layer assembly into a solution-like adhesive capsule; Step 2: Removing the immersed assembly and drying it, then coating one side of the dried assembly with pressure-sensitive adhesive and curing it to form a first adhesive layer; Step 3: Covering the first adhesive layer with a first release paper; Step 4: Coating the other side of the assembly with pressure-sensitive adhesive and curing it to form a second adhesive layer, then covering the second adhesive layer with a second release paper to form a double-sided adhesive.

[0004] While existing double-sided tapes perform well in terms of adhesion, they are insufficient in terms of tensile strength, especially in applications that require high tensile force, where they are prone to delamination or breakage. In addition, the existing double-sided tape manufacturing process is complex, has low production efficiency, and its environmental performance needs to be improved. Summary of the Invention

[0005] The purpose of this invention is to provide a tensile-resistant double-sided adhesive and its manufacturing method. This double-sided adhesive not only has high adhesion but also remains stable when subjected to large tensile forces. At the same time, the manufacturing process is simple, environmentally friendly, and efficient.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tensile-resistant double-sided adhesive, comprising, from top to bottom, a first protective layer, a first tensile-strength reinforcing layer, a first adhesive layer, a base layer, a second adhesive layer, a second tensile-strength reinforcing layer, and a second protective layer; the first tensile-strength reinforcing layer and the second tensile-strength reinforcing layer are high-strength aramid fiber woven mesh.

[0007] As a preferred embodiment of the present invention, the linear density of the aramid fiber is 10-15 denier, and the mesh count of the woven mesh is 80-120 mesh.

[0008] As a preferred embodiment of the present invention, both the first protective layer and the second protective layer are environmentally friendly biodegradable plastic films with a thickness of 0.05-0.1 mm.

[0009] As a preferred embodiment of the present invention, the first adhesive layer and the second adhesive layer are based on acrylate adhesives, with 5-10% by mass of nano-silica particles added.

[0010] As a preferred embodiment of the present invention, the base layer is a polyurethane elastomer film with a thickness of 0.1-0.2 mm.

[0011] This invention also discloses a method for manufacturing a tensile-resistant double-sided adhesive, comprising the following steps:

[0012] Prepare the raw materials;

[0013] Preparation of the first adhesive layer: Nano-silica particles are uniformly dispersed in an acrylic adhesive, stirred, coated onto the first tensile reinforcement layer and cured.

[0014] Composite base layer: The first tensile reinforcement layer of the cured first adhesive layer is hot-pressed together with a polyurethane elastomer film;

[0015] To create the second adhesive layer: uniformly disperse nano-silica particles in an acrylic adhesive, stir, apply the mixture to the other side of the substrate, and cure.

[0016] Composite second tensile reinforcement layer: The second tensile reinforcement layer is bonded to the second adhesive layer by hot pressing;

[0017] Adhesive protective layer: The first protective layer and the second protective layer are respectively adhered to the outside of the first tensile reinforcement layer and the second tensile reinforcement layer.

[0018] As a preferred technical solution of the present invention, when making the first adhesive layer, the stirring speed is 1000-1500 r / min, the stirring time is 20-40 min, the coating thickness is 0.08-0.12 mm, the curing temperature is 60-80℃, and the curing time is 15-25 min.

[0019] As a preferred technical solution of the present invention, when the composite base layer and the composite second tensile reinforcement layer are combined, the hot pressing temperature is 100-120℃, the pressure is 0.5-1MPa, and the hot pressing time is 5-10min.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] By setting a high-strength aramid fiber woven mesh as the first tensile reinforcement layer and the second tensile reinforcement layer in the double-sided adhesive structure, the tensile strength of the double-sided adhesive is significantly improved.

[0022] The first and second protective layers are made of environmentally friendly biodegradable plastic film, which reduces the pollution of the environment caused by traditional plastic film and conforms to the current green and environmentally friendly development concept. After the product is disposed of, it will not remain in the environment for a long time, reducing the negative impact on the ecosystem and contributing to sustainable development. The first and second adhesive layers, which are based on acrylic adhesives, have added 5-10% by mass of nano-silica particles, which enhances the cohesion and wear resistance of the adhesive layers, making the double-sided tape stronger and more resistant to external factors during long-term use, extending the service life of the double-sided tape and ensuring the stability of the bonding effect.

[0023] The base layer uses a polyurethane elastomer film, which can further improve the overall tensile strength while ensuring the flexibility of the double-sided adhesive.

[0024] This ensures high efficiency in the production process, improving production efficiency and reducing production costs while guaranteeing product quality. Attached Figure Description

[0025] Figure 1 This is a flowchart of the manufacturing method of the present invention. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] Please see Figure 1This is the first embodiment of the present invention, which provides a tensile-resistant double-sided adhesive, comprising, from top to bottom, a first protective layer, a first tensile-reinforcing layer, a first adhesive layer, a base layer, a second adhesive layer, a second tensile-reinforcing layer, and a second protective layer; the first tensile-reinforcing layer and the second tensile-reinforcing layer are high-strength aramid fiber woven mesh; the linear density of the aramid fiber is 10 denier, and the mesh count of the woven mesh is 80 mesh; the aramid fiber has extremely high strength and modulus, which can effectively improve the tensile properties of the double-sided adhesive.

[0029] In this embodiment, preferably, both the first protective layer and the second protective layer are environmentally friendly biodegradable plastic films with a thickness of 0.05 mm; for example, polylactic acid film. This material has good flexibility and certain barrier properties, which can protect the internal structure and meet environmental protection requirements.

[0030] In this embodiment, preferably, the first adhesive layer and the second adhesive layer are based on acrylic adhesives, with 5% by mass of nano-silica particles added; acrylic adhesives have good adhesion and weather resistance, and the addition of nano-silica particles can enhance the cohesion and wear resistance of the adhesive layer, and improve the adhesion and service life.

[0031] In this embodiment, preferably, the base layer is a 0.1mm thick polyurethane elastomer film. Polyurethane elastomer has good flexibility, elasticity and mechanical strength, which can further improve the overall tensile performance while ensuring the flexibility of the double-sided adhesive.

[0032] A method for manufacturing a tensile-resistant double-sided adhesive includes the following steps:

[0033] Prepare the raw materials;

[0034] Preparation of the first adhesive layer: Nano-silica particles are uniformly dispersed in an acrylic adhesive, stirred, coated onto the first tensile reinforcement layer, and cured; the stirring speed is 1000 r / min, the stirring time is 40 min, the coating thickness is 0.08 mm, the curing temperature is 60℃, and the curing time is 25 min.

[0035] Composite base layer: The first tensile reinforcement layer of the cured first adhesive layer is hot-pressed together with a polyurethane elastomer film; the hot-pressing temperature is 100℃, the pressure is 0.5MPa, and the hot-pressing time is 5min.

[0036] To create the second adhesive layer: uniformly disperse nano-silica particles in an acrylic adhesive, stir, apply the mixture to the other side of the substrate, and cure.

[0037] Composite second tensile reinforcement layer: The second tensile reinforcement layer is bonded to the second adhesive layer by hot pressing; the hot pressing temperature is 100℃, the pressure is 0.5MPa, and the hot pressing time is 5min.

[0038] Applying protective layers: The first protective layer and the second protective layer are respectively applied to the outside of the first tensile reinforcement layer and the second tensile reinforcement layer by roller pressing at room temperature.

[0039] Example 2

[0040] Please see Figure 1 This is a second embodiment of the present invention, which provides a tensile-resistant double-sided adhesive, comprising, from top to bottom, a first protective layer, a first tensile-reinforcing layer, a first adhesive layer, a base layer, a second adhesive layer, a second tensile-reinforcing layer, and a second protective layer; the first tensile-reinforcing layer and the second tensile-reinforcing layer are high-strength aramid fiber woven mesh; the linear density of the aramid fiber is 13 denier, and the mesh count of the woven mesh is 100 mesh; the aramid fiber has extremely high strength and modulus, which can effectively improve the tensile properties of the double-sided adhesive.

[0041] In this embodiment, preferably, both the first protective layer and the second protective layer are environmentally friendly biodegradable plastic films with a thickness of 0.08 mm; for example, polylactic acid film. This material has good flexibility and certain barrier properties, which can protect the internal structure and meet environmental protection requirements.

[0042] In this embodiment, preferably, the first adhesive layer and the second adhesive layer are based on acrylic adhesives, with 8% by mass of nano-silica particles added; acrylic adhesives have good adhesion and weather resistance, and the addition of nano-silica particles can enhance the cohesion and wear resistance of the adhesive layer, and improve the adhesion and service life.

[0043] In this embodiment, preferably, the base layer is a 0.15mm thick polyurethane elastomer film. Polyurethane elastomer has good flexibility, elasticity and mechanical strength, which can further improve the overall tensile performance while ensuring the flexibility of the double-sided adhesive.

[0044] A method for manufacturing a tensile-resistant double-sided adhesive includes the following steps:

[0045] Prepare the raw materials;

[0046] Preparation of the first adhesive layer: Nano-silica particles are uniformly dispersed in an acrylic adhesive, stirred, coated onto the first tensile reinforcement layer, and cured; the stirring speed is 1250 r / min, the stirring time is 30 min, the coating thickness is 0.1 mm, the curing temperature is 70℃, and the curing time is 20 min;

[0047] Composite base layer: The first tensile reinforcement layer of the cured first adhesive layer is hot-pressed together with a polyurethane elastomer film; the hot-pressing temperature is 110℃, the pressure is 0.8MPa, and the hot-pressing time is 8min.

[0048] To create the second adhesive layer: uniformly disperse nano-silica particles in an acrylic adhesive, stir, apply the mixture to the other side of the substrate, and cure.

[0049] Composite second tensile reinforcement layer: The second tensile reinforcement layer is bonded to the second adhesive layer by hot pressing; the hot pressing temperature is 110℃, the pressure is 0.8MPa, and the hot pressing time is 8min;

[0050] Applying protective layers: The first protective layer and the second protective layer are respectively applied to the outside of the first tensile reinforcement layer and the second tensile reinforcement layer by roller pressing at room temperature.

[0051] Example 3

[0052] Please see Figure 1 This is the third embodiment of the present invention. This embodiment provides a tensile-resistant double-sided adhesive, which includes, from top to bottom, a first protective layer, a first tensile-reinforcing layer, a first adhesive layer, a base layer, a second adhesive layer, a second tensile-reinforcing layer, and a second protective layer. The first tensile-reinforcing layer and the second tensile-reinforcing layer are high-strength aramid fiber woven meshes. The linear density of the aramid fibers is 15 denier, and the mesh count of the woven mesh is 120 meshes. Aramid fibers have extremely high strength and modulus, which can effectively improve the tensile properties of the double-sided adhesive.

[0053] In this embodiment, preferably, both the first protective layer and the second protective layer are environmentally friendly biodegradable plastic films with a thickness of 0.1 mm; for example, polylactic acid film. This material has good flexibility and certain barrier properties, which can protect the internal structure and meet environmental protection requirements.

[0054] In this embodiment, preferably, the first adhesive layer and the second adhesive layer are based on acrylic adhesives, with 10% by mass of nano-silica particles added; acrylic adhesives have good adhesion and weather resistance, and the addition of nano-silica particles can enhance the cohesion and wear resistance of the adhesive layer, and improve the adhesion and service life.

[0055] In this embodiment, preferably, the base layer is a 0.2mm thick polyurethane elastomer film. Polyurethane elastomer has good flexibility, elasticity and mechanical strength, which can further improve the overall tensile performance while ensuring the flexibility of the double-sided adhesive.

[0056] A method for manufacturing a tensile-resistant double-sided adhesive includes the following steps:

[0057] Prepare the raw materials;

[0058] Preparation of the first adhesive layer: Nano-silica particles are uniformly dispersed in an acrylic adhesive, stirred, coated onto the first tensile reinforcement layer, and cured; the stirring speed is 1500 r / min, the stirring time is 20 min, the coating thickness is 0.12 mm, the curing temperature is 80℃, and the curing time is 15 min;

[0059] Composite substrate: The first tensile reinforcement layer of the cured first adhesive layer is hot-pressed together with a polyurethane elastomer film; the hot-pressing temperature is 120℃, the pressure is 1MPa, and the hot-pressing time is 10min;

[0060] To create the second adhesive layer: uniformly disperse nano-silica particles in an acrylic adhesive, stir, apply the mixture to the other side of the substrate, and cure.

[0061] Composite second tensile reinforcement layer: The second tensile reinforcement layer is bonded to the second adhesive layer by hot pressing; the hot pressing temperature is 120℃, the pressure is 1MPa, and the hot pressing time is 10min;

[0062] Applying protective layers: The first protective layer and the second protective layer are respectively applied to the outside of the first tensile reinforcement layer and the second tensile reinforcement layer by roller pressing at room temperature.

[0063] To verify the beneficial effects of the tensile-resistant double-sided adhesive provided by this invention, the following experimental data compares the performance differences between traditional double-sided adhesives and the tensile-resistant double-sided adhesive of this invention:

[0064] Tensile strength test

[0065] Test method: Tensile tests were conducted on traditional double-sided adhesive and the tensile-resistant double-sided adhesive of this invention using a tensile testing machine, and the maximum tensile force at break was recorded;

[0066]

[0067]

[0068] Conclusion: The tensile strength of the double-sided adhesive of this invention is significantly higher than that of traditional double-sided adhesive, mainly due to the synergistic effect of the high-strength aramid fiber woven mesh and the polyurethane elastomer base layer.

[0069] Environmental performance testing

[0070] Test method: Place the double-sided tape sample in the natural environment, observe its degradation, and test the environmental impact of the degradation products;

[0071]

[0072] Conclusion: The tensile-resistant double-sided adhesive of this invention uses an environmentally friendly biodegradable plastic film as a protective layer, which can degrade naturally in a short time, and the degradation products do not pollute the environment.

[0073] Production efficiency comparison

[0074] Test method: Compare the production process time of traditional double-sided tape and the tensile-resistant double-sided tape of this invention;

[0075]

[0076]

[0077] Conclusion: The manufacturing process of the tensile-resistant double-sided adhesive of this invention is more efficient, and the total production time is shortened by about 36%.

[0078] Although embodiments of the invention have been shown and described in detail above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensile-resistant double-sided adhesive, characterized in that: The layers, from top to bottom, consist of a first protective layer, a first tensile reinforcement layer, a first adhesive layer, a base layer, a second adhesive layer, a second tensile reinforcement layer, and a second protective layer; the first tensile reinforcement layer and the second tensile reinforcement layer are high-strength aramid fiber woven mesh.

2. The tensile-resistant double-sided adhesive according to claim 1, characterized in that: The linear density of aramid fiber is 10-15 denier, and the mesh count of the woven web is 80-120 mesh.

3. The tensile-resistant double-sided adhesive according to claim 1, characterized in that: Both the first and second protective layers are environmentally friendly biodegradable plastic films with a thickness of 0.05-0.1 mm.

4. The tensile-resistant double-sided adhesive according to claim 1, characterized in that: The first adhesive layer and the second adhesive layer are based on acrylate adhesives, with 5-10% by mass of nano-silica particles added.

5. The tensile-resistant double-sided adhesive according to claim 1, characterized in that: The base layer is a polyurethane elastomer film with a thickness of 0.1-0.2 mm.

6. A method for manufacturing a tensile-resistant double-sided adhesive according to any one of claims 1-5, characterized in that: Includes the following steps: Prepare the raw materials; Preparation of the first adhesive layer: Nano-silica particles are uniformly dispersed in an acrylic adhesive, stirred, coated onto the first tensile reinforcement layer and cured. Composite base layer: The first tensile reinforcement layer of the cured first adhesive layer is hot-pressed together with a polyurethane elastomer film; To create the second adhesive layer: uniformly disperse nano-silica particles in an acrylic adhesive, stir, apply the mixture to the other side of the substrate, and cure. Composite second tensile reinforcement layer: The second tensile reinforcement layer is bonded to the second adhesive layer by hot pressing; Adhesive protective layer: The first protective layer and the second protective layer are respectively adhered to the outside of the first tensile reinforcement layer and the second tensile reinforcement layer.

7. The method for manufacturing a tensile-resistant double-sided adhesive according to claim 6, characterized in that: When preparing the first adhesive layer, the stirring speed is 1000-1500 r / min, the stirring time is 20-40 min, the coating thickness is 0.08-0.12 mm, the curing temperature is 60-80℃, and the curing time is 15-25 min.

8. The method for manufacturing a tensile-resistant double-sided adhesive according to claim 6, characterized in that: When combining the composite base layer and the composite second tensile reinforcement layer, the hot-pressing temperature is 100-120℃, the pressure is 0.5-1MPa, and the hot-pressing time is 5-10min.

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