Cotton paper shading adhesive tape
By using cotton paper substrate and nano-level black light-blocking particles, the light-blocking tape solves the problem of poor adhesion of traditional light-blocking tape on curved and irregular surfaces, achieving high efficiency in light blocking and weather resistance, and is suitable for electronic devices and outdoor advertising in complex environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-03-20
AI Technical Summary
Traditional film-based light-blocking tapes cannot adhere tightly to curved or irregular surfaces, easily resulting in gaps that allow light to leak out. Furthermore, they are prone to aging and delamination in complex environments.
Using cotton paper as the substrate, combined with high-concentration nano-level black light-blocking particles and high-performance pressure-sensitive adhesive, a soft and rebound-resistant light-blocking adhesive layer structure is designed, along with a release layer, to ensure that the tape adheres tightly to complex surfaces and has excellent light-blocking performance.
It achieves tight adhesion of the tape to curved and irregular surfaces, prevents light leakage, and maintains stable performance over a wide temperature range, making it suitable for demanding electronic devices and outdoor applications.
Smart Images
Figure CN224015552U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of adhesive tape, especially relates to a cotton paper light shielding adhesive tape.
BACKGROUND
[0002] In today's mainstream light shielding adhesive tape with film material, in electronic, optical and many other fields, with the development of product fine and high performance, the requirement of light shielding material is more and more strict. At present, the light shielding adhesive tape on the market, many in the face of complex environment and high requirement use scene, exposed many deficiencies. For example, the softness of traditional film quality base material light shielding adhesive tape is insufficient, when pasting on some curved surface or special-shaped surface, cannot closely fit, and light leakage is caused by the gap.
UTILITARY MODEL CONTENT
[0003] The utility model discloses a kind of cotton paper light shielding adhesive tapes, which are soft in texture, flexible, can bend and fit with the shape of the surface to be pasted, have strong anti-rebound ability, and have excellent pasting effect on curved surfaces.
[0004] The utility model discloses the following technical solutions:
[0005] A cotton paper light shielding adhesive tape includes a base material layer, which is a cotton paper base material. A first light shielding adhesive layer is provided on one surface of the base material layer. A second light shielding adhesive layer is provided on the side surface of the base material layer away from the first light shielding adhesive layer. A release layer is provided on the side surface of the first light shielding adhesive layer and / or the second light shielding adhesive layer away from the base material layer.
[0006] As described above, the thickness of the base material layer is 0.03-0.05 mm.
[0007] As described above, the first light shielding adhesive layer includes a first adhesive and first nano-level black light shielding particles uniformly dispersed in the first adhesive.
[0008] As described above, the first adhesive is a high-performance pressure-sensitive adhesive.
[0009] As described above, the thickness of the first light shielding adhesive layer is 0.45-0.9 mm.
[0010] As described above, the first nano-level black light shielding particles are composed of black toner, propylene glycol methyl ether acetate, butyl acetate, and a dispersing agent.
[0011] As described above, the second light shielding adhesive layer includes a second adhesive and second nano-level black light shielding particles uniformly dispersed in the second adhesive.
[0012] The second adhesive is a high-performance pressure-sensitive adhesive.
[0013] The second light-blocking adhesive layer has a thickness of 0.45-0.9mm.
[0014] The release layer has a thickness of 0.05-0.13mm.
[0015] Compared with the prior art, the utility model has the following advantages:
[0016] The utility model provides a cotton paper light-blocking adhesive tape, including substrate layer, be equipped with first light-blocking adhesive layer on one surface of substrate layer, be equipped with second light-blocking adhesive layer on the side surface of substrate layer away from first light-blocking adhesive layer, be equipped with release layer on the side surface of first light-blocking adhesive layer and / or second light-blocking adhesive layer away from substrate layer, and substrate layer is cotton paper substrate, and the texture is soft, and the flexibility is good, can bend and fit with the shape of pasting surface, and the anti-rebound ability is strong, and the pasting effect is excellent to the curved surface.
[0017] Meanwhile, the first light-blocking adhesive layer and the second light-blocking adhesive layer of the application add high-concentration nano black light-blocking particles in the adhesive, the particles are uniformly dispersed in the adhesive, can effectively absorb and block light, have good weather resistance, can resist ultraviolet rays, resist high and low temperature, are not easy to age, crack, lose adhesion, and are suitable for outdoor advertising and some die-cutting material applications. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description.
[0019] Figure 1 It is the structure schematic view of cotton paper light-blocking adhesive tape in the specific embodiment of the utility model.
CONCRETE IMPLEMENTATIONS
[0020] In order to make the technical problem, technical scheme and beneficial effect solved by the utility model more clearly, the following will be further detailed to the utility model by combining with the drawings and embodiment.It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.
[0021] When the utility model embodiment refers to "first", "second" and other ordinal numbers, unless according to the context, it expresses the order of meaning, should be understood as merely for distinguishing.
[0022] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected; can be mechanical connection, also can be electrical connection; can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication of two elements inside. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according of the specific circumstances.
[0023] Specific embodiments, such as Figure 1 The cotton paper light shielding adhesive tape shown in the description of the utility model, including base material layer 1, the base material layer 1 is cotton paper base material, the first light shielding glue layer 2 is equipped on the surface of the base material layer 1, the second light shielding glue layer 3 is equipped on the side surface of the base material layer 1 away from the first light shielding glue layer 2, the side surface of the first light shielding glue layer 2 and / or second light shielding glue layer 3 away from the base material layer 1 is equipped with release layer 4. With cotton paper as base material, soft texture, good flexibility, can be curved with the shape of the pasting surface, strong anti-rebound ability, excellent for the paste effect of curved surface, avoid when pasting on some curved surface or special-shaped surface, unable to closely adhere, easily appear gap, lead to light leakage. Select high-strength cotton paper treated by special process, its fiber structure is compact and uniform, and the high-strength cotton paper base layer gives the adhesive tape. Good flexibility makes it can easily adhere to various curved surfaces, special-shaped surfaces, such as camera module, display screen frame, etc., ensure that it can still maintain good light shielding and pasting effect in complex pasting environment. Optionally, as Figure 1 The release layer 4 is provided on the side surface of the second light shielding glue layer 3 away from the base material layer 1.
[0024] And by selecting special cotton paper base layer and light shielding glue layer material, the adhesive tape can maintain stable performance in the temperature range of-40 ℃ to 150 ℃, without delamination, aging and other phenomena, greatly widening its use scenarios, and can be applied to electronic equipment manufacturing, die cutting process mold installation and other fields in high temperature environment.
[0025] Specifically, the thickness of the base material layer 1 is 0.03-0.05mm. Not only has good softness, can adapt to the pasting demand of various complex surfaces, but also helps to improve the tensile property and anti-rebound property of the adhesive tape while ensuring the overall strength of the adhesive tape.
[0026] In addition, the first light-shielding adhesive layer 2 comprises a first adhesive 21 and first nano-level black light-shielding particles 22 uniformly dispersed in the first adhesive 21. The high-concentration nano-level black light-shielding particles are added to the adhesive and uniformly dispersed in the adhesive, which can effectively absorb and block light. The addition of the nano-level black light-shielding particles enables the light-shielding adhesive layer to have super light-shielding capability, which can meet the use requirements of optical instruments, photographic equipment and the like with extremely high light-shielding requirements, and effectively avoid the influence of light leakage on the performance of the equipment. In addition, the light-shielding adhesive layer has good weather resistance, can resist ultraviolet rays and high and low temperatures, is not easy to age, crack and lose adhesion, and is suitable for outdoor advertising and some die-cutting materials.
[0027] Further, the first adhesive 21 is a high-performance pressure-sensitive adhesive. The first adhesive 21 has good initial adhesion, can be quickly pasted, has strong holding adhesion, and is not easy to fall off after long-term use, and can be used on various material surfaces such as glass, metal and plastic.
[0028] More specifically, the thickness of the first light-shielding adhesive layer 2 is 0.45-0.9 mm. The first light-shielding adhesive layer 2 has good adhesion, ensures that the adhesive tape is closely attached to the pasted object, and has excellent light-shielding performance. Tests show that the light transmittance in the visible light range is less than 0.01%.
[0029] Further, the second light-shielding adhesive layer 3 comprises a second adhesive 31 and second nano-level black light-shielding particles 32 uniformly dispersed in the second adhesive 31. The high-concentration nano-level black light-shielding particles are added to the adhesive and uniformly dispersed in the adhesive, which can effectively absorb and block light. The addition of the nano-level black light-shielding particles enables the light-shielding adhesive layer to have super light-shielding capability, which can meet the use requirements of optical instruments, photographic equipment and the like with extremely high light-shielding requirements, and effectively avoid the influence of light leakage on the performance of the equipment. In addition, the light-shielding adhesive layer has good weather resistance, can resist ultraviolet rays and high and low temperatures, is not easy to age, crack and lose adhesion, and is suitable for outdoor advertising and some die-cutting materials.
[0030] Specifically, the first nano-level black light-shielding particles 22 and the second nano-level black light-shielding particles 32 are each composed of black toner, propylene glycol methyl ether acetate, butyl acetate and a dispersing agent. More specifically, the black toner is a light, loose and extremely fine black powder with a very large surface area ranging from 10-3000 m2 / g, which is a product obtained by incomplete combustion or thermal decomposition of carbon-containing substances (coal, natural gas, heavy oil, fuel oil, etc.) under insufficient air conditions.
[0031] Further, the second adhesive 31 is a high-performance pressure-sensitive adhesive. The second adhesive 31 has good initial adhesion, can be quickly pasted, has strong holding adhesion, and is not easy to fall off after long-term use, and can be used on various material surfaces such as glass, metal and plastic.
[0032] Specifically, the thickness of the second light-shielding adhesive layer 3 is 0.45-0.9mm. In the meanwhile, the adhesive layer has good adhesion, ensuring the close contact between the adhesive tape and the adherend, and has excellent light-shielding performance. The light transmittance in the visible light range is less than 0.01%.
[0033] More specifically, the thickness of the release layer 4 is 0.05-0.13mm. The release layer 4 is a release paper or a release film, and has a thickness of 0.05-0.13mm. The release layer has good release performance, can effectively protect the light-shielding adhesive layer before use of the adhesive tape, prevent the light-shielding adhesive layer from being contaminated and damaged, and will not be left on the surface of the adhesive layer when the release layer is removed, thereby affecting the adhesion of the adhesive tape.
[0034] The process of the cotton paper light-shielding adhesive tape of the present application is as follows:
[0035] 1) A base layer of cotton paper with a thickness of 40μm is used, and a fast-curing acrylic adhesive with a release force of ≥1500g / inch is coated on the surface of a 120μm release layer to a thickness of 0.75μm, and then dried and cured in an oven. After the oven, the base layer is attached to the side coated with the fast-curing acrylic adhesive to obtain a semi-finished product.
[0036] 2) Through the above operation steps, a fast-curing acrylic adhesive with a thickness of 0.75μm is coated on the surface of a 120μm release layer, and then dried and cured in an oven. After the oven, the other side of the semi-finished product obtained in the above step is attached to obtain an adhesive tape.
[0037] The above is an embodiment provided in combination with specific content, and the specific implementation of the present application is not limited to these descriptions. Since the industry naming is not the same, the naming is not limited to the above, and the naming is not limited to English. Any approximation, similarity or replacement of the method and structure of the present application, or any technical deduction or replacement under the premise of the concept of the present application, should be considered as the protection scope of the present application.
Claims
1. A cotton paper light-blocking tape, characterized in that, It includes a substrate layer (1), which is a cotton paper substrate. A first light-blocking adhesive layer (2) is provided on one surface of the substrate layer (1), and a second light-blocking adhesive layer (3) is provided on the side surface of the substrate layer (1) away from the first light-blocking adhesive layer (2). A release layer (4) is provided on the side surface of the first light-blocking adhesive layer (2) and / or the second light-blocking adhesive layer (3) away from the substrate layer (1).
2. The cotton paper light-blocking tape according to claim 1, characterized in that, The thickness of the substrate layer (1) is 0.03-0.05 mm.
3. The cotton paper light-blocking tape according to claim 1, characterized in that, The first light-shielding adhesive layer (2) includes a first adhesive (21) and first nanoscale black light-shielding particles (22) uniformly dispersed in the first adhesive (21).
4. The cotton paper light-blocking tape according to claim 3, characterized in that, The first adhesive (21) is a high-performance pressure-sensitive adhesive.
5. The cotton paper light-blocking tape according to claim 3, characterized in that, The thickness of the first light-shielding adhesive layer (2) is 0.45-0.9 mm.
6. The cotton paper light-blocking tape according to claim 3, characterized in that, The first nanoscale black opaque particle (22) is composed of black pigment, propylene glycol methyl ether acetate, butyl acetate and dispersant.
7. The cotton paper light-blocking tape according to claim 1, characterized in that, The second light-shielding adhesive layer (3) includes a second adhesive (31) and second nanoscale black light-shielding particles (32) uniformly dispersed in the second adhesive (31).
8. The cotton paper light-blocking tape according to claim 7, characterized in that, The second adhesive (31) is a high-performance pressure-sensitive adhesive.
9. The cotton paper light-blocking tape according to claim 7, characterized in that, The thickness of the second light-shielding adhesive layer (3) is 0.45-0.9 mm.
10. The cotton paper light-blocking tape according to claim 1, characterized in that, The thickness of the release layer (4) is 0.05-0.13 mm.