Antistatic tape

By using anti-static ionizing paper and conductive adhesive layer in the tape, the conductive path is grounded to eliminate static electricity, which solves the problem of electrostatic damage during the production and processing of the tape, and improves the service life and production efficiency of the tape.

CN113604169BActive Publication Date: 2025-05-20江苏晶华新材料科技有限公司
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Patent Information

Application Number
CN202111081281.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-09-15
Publication Date
2025-05-20
Estimated Expiration
2041-09-15

AI Technical Summary

Technical Problem

Existing tapes are easily damaged by static electricity during production and rewinding, resulting in poor unwinding and scrapped tapes. Static electricity is easy to absorb dust or other particles, affecting the service life of electronic components.

Method used

The antistatic tape design is adopted that includes an antistatic ionizing paper and a conductive adhesive layer. The antistatic ionizing paper consists of an antistatic coating and a metal layer. The conductive adhesive layer contains conductive particles, and the metal layer and the conductive particles form a conductive path for grounding and de-static electricity.

Benefits of technology

It effectively reduces the generation of static electricity during production, processing and use of tape, and eliminates static electricity through grounding of conductive paths, avoiding the unwinding and material scrapping caused by static electricity aggregation and release.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses an antistatic tape, comprising an antistatic release paper and a conductive adhesive layer, wherein the antistatic release paper comprises an antistatic coating and a metal layer, and the conductive adhesive layer comprises conductive particles, wherein the metal layer and the conductive particles can form a conductive path for conducting away static electricity generated in the antistatic tape. The invention has the advantages of not causing static electricity accumulation and release, damaging release, and causing poor unwinding.
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Description

Technical Field

[0001] The present invention relates to a tape, and particularly to an antistatic tape. Background Art

[0002] With the rapid development of the electronics industry, various tapes are applied to electronic products such as computers and mobile phones. As an important type of adhesive product in the electronics industry, conductive tapes are more widely used in electronic products. In the past, substrate-free tapes were easily damaged by static electricity during the production and rewinding processes, resulting in poor unwinding, tape scrapping, and static electricity being prone to adsorbing dust or other particles, ultimately affecting the service life of electronic components. Therefore, a large number of static elimination devices (such as static ropes, static brushes, deionized static elimination rods, etc.) are used during the production and rewinding processes, and the static electricity values are monitored and controlled at multiple positions. However, some products still cannot be used due to static damage during the final application, resulting in material scrapping.

[0003] Therefore, it is necessary to provide an antistatic tape to solve the above problems.

[0004] The information disclosed in this background art section is only intended to enhance the understanding of the overall background of the present invention and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide an antistatic tape that can transfer and eliminate static electricity in the tape.

[0006] To achieve the above purpose, an embodiment of the present invention provides an antistatic tape, which includes an antistatic release paper and a conductive adhesive layer. The antistatic release paper includes an antistatic coating and a metal layer, and the conductive adhesive layer includes conductive particles. Among them, the metal layer and the conductive particles can form a conductive path for conducting away the static electricity generated in the antistatic tape.

[0007] In one or more embodiments of the present invention, the antistatic release paper sequentially includes a light release force layer, an antistatic layer, a Grafflex base paper layer, an adhesive layer, a metal layer, and a heavy release force layer from top to bottom, and the heavy release force layer is in contact with the conductive adhesive layer.

[0008] In one or more embodiments of the present invention, the antistatic layer includes the following raw material components by mass fraction: 30 - 60 parts by mass of an antistatic agent, 10 - 30 parts by mass of a nano-scale metal oxide, and 50 - 100 parts by mass of a solvent.

[0009] In one or more embodiments of the present invention, the antistatic agent is one or more of bis(trifluoromethylsulfonyl)imide, polyacetylene, ethoxylated alkylamine, polythiophene, polypyrrole, polyaniline, polyphenylene, polyphenylene vinylene, polybenzimidazole, and sodium alkyl sulfonate.

[0010] In one or more embodiments of the present invention, the thickness of the conductive adhesive layer is 0.01 - 0.1 mm.

[0011] In one or more embodiments of the present invention, the conductive adhesive layer comprises the following raw material components by mass parts: acrylic glue is 50 - 80 mass parts; isocyanate crosslinking agent is 1 - 5 mass parts; coupling agent is 0.1 - 1 mass part; conductive particles are 2 - 15 mass parts, and antistatic agent is 2 - 10 mass parts.

[0012] In one or more embodiments of the present invention, the antistatic agent includes one or more of nano-oxides, quaternary ammonium salts, sulfates, phosphates, polyethylene glycols, polythiophenes, and sodium alkyl sulfonates.

[0013] In one or more embodiments of the present invention, the isocyanate crosslinking agent includes diphenylmethane diisocyanate.

[0014] In one or more embodiments of the present invention, the coupling agent is a silane coupling agent.

[0015] In one or more embodiments of the present invention, the conductive particles are one or more of nickel powder, silver powder, copper powder, nickel-coated graphite conductive powder, silver-coated aluminum conductive powder, silver-coated copper conductive powder, and silver-coated nickel conductive powder.

[0016] Compared with the prior art, for the antistatic tape according to the embodiments of the present invention, by adding an antistatic agent into the conductive adhesive layer and adding an antistatic substance into the antistatic release paper, the generation of static electricity during the production, processing, and use of the antistatic tape is greatly reduced; at the same time, the conductive particles in the conductive adhesive layer and the metal layer in the antistatic release paper can form a conductive path, and the generated static electricity can be conducted away by grounding the path, without causing static electricity accumulation, release, damaging the release, and resulting in poor unwinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an antistatic tape according to an embodiment of the present invention.

[0018] MAIN REFERENCE NUMERAL DESCRIPTION:

[0019] 1. Antistatic release paper; 11. Light release force layer; 12. Antistatic layer; 13. Glassine base paper layer; 14. Adhesive layer; 15. Metal layer; 16. Heavy release force layer; 2. Conductive adhesive layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will describe in detail the specific embodiments of the present invention in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0021] Unless otherwise clearly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "having" etc. will be understood to include the stated elements or components, without excluding other elements or other components.

[0022] As Figure 1 shown, the antistatic tape according to a preferred embodiment of the present invention includes an antistatic release paper 1 and a conductive adhesive layer 2.

[0023] In a specific embodiment, the antistatic release paper 1 from top to bottom is successively a light release force layer 11, an antistatic layer 12, a glassine base paper layer 13, an adhesive layer 14, a metal layer 15 and a heavy release force layer 16. Among them, below the heavy release force layer 16 is the conductive adhesive layer 2. The antistatic release paper 1 includes an antistatic layer 12, which can avoid the generation and retention of static electricity in the antistatic release paper 1 during the production of the antistatic release paper 1. The metal layer 15 forms a conductive path with the conductive adhesive layer 2, and grounding this path can transfer the static electricity in the antistatic tape to the ground, achieving the effect of eliminating the static electricity in the antistatic tape.

[0024] Among them, the adhesive layer 14 can be composed of acrylic adhesive, which plays a role in fixedly connecting the metal layer 15 and the glassine base paper layer 13.

[0025] Among them, the glassine base paper layer 13 is composed of glassine base paper.

[0026] Among them, the light release force layer 11 and the heavy release force layer 16 are respectively composed of light / heavy surface release agents.

[0027] In a specific embodiment, the metal in the metal layer 15 can use aluminum foil. Taking advantage of the advantages of aluminum such as light weight, excellent electrical conductivity and low cost, it can not only reduce the manufacturing cost of the antistatic tape, but also reduce the weight of the antistatic tape.

[0028] In a specific embodiment, the antistatic layer 12 includes the following raw materials by mass fraction: 30 - 60 parts by mass of antistatic agent, 10 - 30 parts by mass of nano-metal oxide, and 50 - 100 parts by mass of solvent. Among them, the manufacturing process of the antistatic layer 12 is: adding the antistatic agent into the solvent, mixing it with the nano-metal oxide, and then uniformly coating it on the surface of the corona-treated glassine base paper layer 13, which is the antistatic layer 12.

[0029] Among them, the nano-scale metal oxide is one or more of nano-scale tin oxide, nano-scale zinc oxide, or nano-scale cobalt oxide.

[0030] Among them, the solvent is one or more of ethanol, ethyl acetate, or toluene.

[0031] Among them, the antistatic agent is one or more of bis(trifluoromethyl)sulfonimide, polyacetylene, ethoxylated alkylamine, polythiophene, polypyrrole, polyaniline, polyphenylene, polyphenylene vinylene, polybenzimidazole, and sodium alkyl sulfonate.

[0032] In a specific embodiment, the light release force layer 11 and the heavy release force layer 16 are respectively composed of a light surface release agent and a heavy surface release agent. Among them, the light release agent includes the following raw material components by mass fraction: silicone oil (vinyl siloxane) is 100 parts by mass, crosslinking agent (hydrogen-containing silicone oil) is 1 - 4 parts by mass, heavy peeling additive (MQ silicone resin) is 0 - 50 parts by mass, anchoring agent (organosilane) is 0.1 - 1 part by mass; platinum catalyst (platinum compound + polydimethylsiloxane) is 1 - 2 parts by mass, and organosilicon defoamer (polyether-modified organosilicon defoamer) is 0.5 - 2 parts by mass.

[0033] The heavy release agent includes the following raw material components by mass fraction: silicone oil (vinyl siloxane) is 100 parts by mass, crosslinking agent (hydrogen-containing silicone oil) is 1 - 4 parts by mass, heavy peeling additive (MQ silicone resin) is 20 - 100 parts by mass, anchoring agent (organosilane) is 0.1 - 1 part by mass, platinum catalyst (platinum compound + polydimethylsiloxane) is 1 - 2 parts by mass, and organosilicon defoamer (polyether-modified organosilicon defoamer) is 0.5 - 2 parts by mass.

[0034] It should be noted that due to the presence of the crosslinking agent, the light surface release agent and the heavy surface release agent need to be prepared immediately before use. At the same time, the substances in the brackets in the above embodiments can be the substances used in a specific implementation of the corresponding components.

[0035] In a specific embodiment, the thickness of the conductive adhesive layer 2 is 0.01 - 0.1 mm, so that the surface resistance value of the conductive adhesive layer 2 can be controlled within the range of 10 2 ~10 5 Ω. For the antistatic tapes in the current industry, their surface resistance values generally can only be maintained within the range of 10 6 ~10 10 Ω. This reduces the resistance value of the antistatic tape of the present invention, thereby achieving an increase in the static electricity conduction removal ability of the antistatic tape of the present invention.

[0036] In a specific embodiment, the conductive adhesive layer 2 comprises the following raw material components by mass parts: 50 to 80 mass parts of acrylic glue; 1 to 5 mass parts of isocyanate crosslinking agent; 0.1 to 1 mass part of coupling agent; 2 to 15 mass parts of conductive particles, and 2 to 10 mass parts of antistatic agent.

[0037] Among them, the conductive particles play a role in conducting with the metal layer 15 in the conductive adhesive layer 2.

[0038] In a specific embodiment, the conductive particles can be one or more of nickel powder, silver powder, copper powder, nickel-coated graphite conductive powder, silver-coated aluminum conductive powder, silver-coated copper conductive powder, and silver-coated nickel conductive powder.

[0039] In a specific embodiment, the isocyanate crosslinking agent includes diphenylmethane diisocyanate.

[0040] In a specific embodiment, the coupling agent is a silane coupling agent.

[0041] In a specific embodiment, the antistatic agent includes one or more of nano-oxides, quaternary ammonium salts, sulfates, phosphates, polyethylene glycols, polythiophenes, and sodium alkyl sulfonates.

[0042] The preparation process of the antistatic tape of the present invention will be introduced in detail below:

[0043] 1) Corona-treat the glassine base paper, coat acrylic glue on its rough surface, dry at a temperature of 70 to 110 °C for 1 to 3 minutes, coating amount: 5 to 15 g / m 2 , after drying in an oven, laminate a metal layer 15 on the side of the glassine base paper coated with acrylic glue, and then wind it up;

[0044] 2) Emulsify and stir evenly the antistatic substance, nano-scale metal oxide and solvent, and then coat it on the other side of the glassine base paper layer 13 corona-treated in step 1), and wind it up after drying in an oven. Dry at a temperature of 70 to 110 °C for 1 to 2 minutes, wherein the coating amount: 1 to 5 g / m 2 ;

[0045] 3) Prepare the light / heavy surface release agent; preferably coat the light surface release agent on the antistatic layer 12; then coat the heavy surface release agent on the metal layer 15. The coating speed is 50 to 150 m / min; dry at a temperature of 70 to 160 °C, and the drying time is about 1 to 2 minutes, and the coating amount is 1 to 4 g / m 2 , thus obtaining the antistatic release paper 1.

[0046] 4) Weigh the acrylic glue, isocyanate crosslinking agent, coupling agent, conductive particles, and antistatic agent according to the ratio and stir evenly to obtain the antistatic glue;

[0047] 5) Use a scraper to coat the prepared antistatic glue on the heavy release force layer 16 of the antistatic release paper 1 prepared in 3); dry at a temperature of 70 - 120°C, and the coating amount is 10 - 100 g / m 2 ; After drying, wind it up, with the antistatic release paper 1 on the outside and the conductive adhesive layer 2 on the inside. That is, the antistatic tape is obtained.

[0048] Example 1,

[0049] 1) Corona-treat 10 m 2 of glassine base paper, coat acrylic glue on its rough surface, dry at 70°C for 3 minutes, and the coating amount is: 5 g / m 2 ; After drying in an oven, the glassine base paper layer 13 is obtained. Compose a layer of aluminum foil on one side of the glassine base paper layer 13, and then wind it up;

[0050] 2) Emulsify and stir evenly 1.5 g of polythiophene, 1.5 g of polypyrrole, 1 g of nano cobalt oxide, and 5 g of ethanol, then coat it on the other side of the corona-treated glassine base paper layer 13 in step 1), and wind it up after drying in an oven. Dry at 70°C for 2 minutes, and among them, the coating amount is: 1 g / m 2 ;

[0051] 3) Weigh 10 g of light surface release agent and 20 g of heavy surface release agent; first coat the light surface release agent on the antistatic layer 12; then coat the heavy surface release agent on the metal layer 15. The coating speed is 50 m / min; dry at 70°C for 2 minutes, and the coating amount is 1 g / m 2 ; That is, the antistatic release paper 1 is obtained.

[0052] 4) Stir evenly 50 g of acrylic glue, 1 g of diphenylmethane diisocyanate, 0.1 g of silane coupling agent, 2 g of nickel powder, and 2 g of nano silicon dioxide to obtain the antistatic glue;

[0053] 5) Use a scraper to coat the prepared antistatic glue on the heavy release force layer 16 of the antistatic release paper 1 prepared in 3); dry at 70°C, and the coating amount is 10 g / m 2 ; After drying, wind it up, with the antistatic release paper 1 on the outside and the conductive adhesive layer 2 on the inside. That is, the antistatic tape is obtained.

[0054] Example 2,

[0055] 1) Corona-treat 10 m 2 of glassine base paper, coat acrylic glue on its rough surface, dry at 110°C for 1 minute, and the coating amount is: 15 g / m 2 ; After drying in an oven, the glassine base paper layer 13 is obtained. Compose a layer of aluminum foil on one side of the glassine base paper layer 13, and then wind it up;

[0056] 2) Emulsify 20 g of bis(trifluoromethyl)sulfonylimide, 20 g of polyacetylene, 20 g of ethoxylated alkylamine, 15 g of nanoscale tin oxide, 15 g of nanoscale zinc oxide, 50 g of ethyl acetate, and 50 g of toluene, stir evenly, then coat the other side of the corona-treated Graesslin base paper layer 13 in step 1), dry it in an oven and then wind it up. Dry for 1 minute at a temperature of 110 °C. Among them, the coating amount is 5 g / m 2 ;

[0057] 3) Weigh 10 g of light surface release agent and 20 g of heavy surface release agent; preferably coat the light surface release agent on the antistatic layer 12 first; then coat the heavy surface release agent on the metal layer 15. The coating speed is 150 m / min; dry at a temperature of 160 °C for 1 minute, and the coating amount is 4 g / m 2 , thus obtaining the antistatic release paper 1.

[0058] 4) Stir 80 g of acrylic glue, 5 g of diphenylmethane diisocyanate, 1 g of silane coupling agent, 5 g of silver powder, 5 g of copper powder, 5 g of silver-coated copper conductive powder, 2 g of quaternary ammonium salt, 2 g of sulfate ester, 3 g of phosphate ester, and 3 g of polyethylene glycol evenly to obtain antistatic glue;

[0059] 5) Use a scraper to coat the prepared antistatic glue on the heavy release force layer 16 of the antistatic release paper 1 prepared in 3); dry at a temperature of 120 °C, and the coating amount is 100 g / m 2 ; After drying, wind it up, with the antistatic release paper 1 on the outside and the conductive adhesive layer 2 on the inside. Thus obtaining the antistatic tape.

[0060] Example 3,

[0061] 1) Carry out corona treatment on 10 m 2 of Graesslin base paper, coat acrylic glue on its rough surface, dry at a temperature of 80 °C for 2 minutes, and the coating amount is: 10 g / m 2 , obtain the Graesslin base paper layer 13 after drying in an oven, laminate an aluminum foil on one side of the Graesslin base paper layer 13, and then wind it up;

[0062] 2) Emulsify 1.5 g of polyphenylene vinyl, 1.5 g of polybenzimidazole, 1.5 g of alkyl sulfonate, 1 g of nanoscale tin oxide, 1 g of nanoscale zinc oxide, and 8 g of ethyl acetate, stir evenly, then coat the other side of the corona-treated Graesslin base paper layer 13 in step 1), dry it in an oven and then wind it up. Dry for 2 minutes at a temperature of 80 °C. Among them, the coating amount is: 2 g / m 2 ;

[0063] 3) Weigh 10 g of the light-surface release agent and 20 g of the heavy-surface release agent; first coat the light-surface release agent onto the antistatic layer 12; then coat the heavy-surface release agent onto the metal layer 15. The coating speed is 70 m / min; dry at a temperature of 90 °C for 2 minutes, and the coating amount is 1 g / m 2 , thus obtaining the antistatic release paper 1.

[0064] 4) Stir 65 g of acrylic glue, 2 g of diphenylmethane diisocyanate, 0.3 g of silane coupling agent, 4 g of nickel powder, 4 g of nickel-coated graphite conductive powder, 4 g of polyethylene glycol, 3 g of polythiophene, and 4 g of alkyl sulfonate evenly to obtain the antistatic glue;

[0065] 5) Use a scraper to coat the prepared antistatic glue onto the heavy release force layer 16 of the antistatic release paper 1 prepared in 3); dry at a temperature of 80 °C, and the coating amount is 30 g / m 2 ; after drying, wind it up, with the antistatic release paper 1 on the outside and the conductive adhesive layer 2 on the inside. Thus, the antistatic tape is obtained.

[0066] Example 4,

[0067] 1) Corona-treat 10 m 2 of the glassine base paper, coat acrylic glue on its rough surface, dry at a temperature of 90 °C for 2 minutes, and the coating amount is: 13 g / m 2 , and obtain the glassine base paper layer 13 after drying in an oven. Then laminate an aluminum foil on one side of the glassine base paper layer 13, and then wind it up;

[0068] 2) Emulsify and stir 1 g of polyaniline, 1 g of polyphenylene, 1 g of polyphenylene vinyl, 1 g of polybenzimidazole, 1 g of nanoscale tin oxide, 1 g of nanoscale zinc oxide, 1 g of nanoscale cobalt oxide, 3 g of ethanol, 3 g of ethyl acetate, and 3 g of toluene evenly, and then coat it on the other side of the corona-treated glassine base paper layer 13 in step 1), and wind it up after drying in an oven. Dry at a temperature of 90 °C for 1.5 minutes, and the coating amount is: 3 g / m2;

[0069] 3) Weigh 10 g of the light-surface release agent and 20 g of the heavy-surface release agent; first coat the light-surface release agent onto the antistatic layer 12; then coat the heavy-surface release agent onto the metal layer 15. The coating speed is 50 / min; dry at a temperature of 110 °C for 1.5 minutes, and the coating amount is 3 g / m 2 , thus obtaining the antistatic release paper 1.

[0070] 4) Mix and stir 70 g of acrylic glue, 4 g of diphenylmethane diisocyanate, 0.8 g of silane coupling agent, 3 g of nickel powder, 3 g of silver powder, 2 g of silver-coated aluminum conductive powder, 3 g of silver-coated nickel conductive powder, 4 g of quaternary ammonium salt, 4 g of sulfate ester, and 4 g of phosphate ester evenly to obtain the antistatic glue;

[0071] 5) Coat the prepared antistatic glue on the heavy release force layer 16 of the antistatic release paper 1 prepared in 3); dry at a temperature of 110 °C, and the coating amount is 50 g / m 2 ; After drying, wind it up, with the antistatic release paper 1 on the outside and the conductive adhesive layer 2 on the inside. That is, the antistatic tape is obtained.

[0072] Example 5,

[0073] 1) Corona-treat 10 m 2 of the Glassine base paper, coat acrylic glue on its rough surface, dry at a temperature of 100 °C for 1.5 minutes, and the coating amount is: 8 g / m 2 , and obtain the Glassine base paper layer 13 after drying in an oven. Compound a layer of aluminum foil on one side of the Glassine base paper layer 13, and then wind it up;

[0074] 2) Emulsify 1.5 g of polypyrrole, 1.5 g of polyaniline, 1 g of polyphenylene, 2.5 g of nano-zinc oxide and 7 g of ethyl acetate, stir evenly, and then coat it on the other side of the corona-treated Glassine base paper layer 13 in step 1), and wind it up after drying in an oven. Dry at a temperature of 100 °C for 1.2 minutes, and among them, the coating amount is: 4 g / m 2 ;

[0075] 3) Weigh 10 g of light surface release agent and 20 g of heavy surface release agent; first coat the light surface release agent on the antistatic layer 12; then coat the heavy surface release agent on the metal layer 15. The coating speed is 140 / min; dry at a temperature of 150 °C for 1 minute, and the coating amount is 3.5 g / m 2 , that is, the antistatic release paper 1 is obtained.

[0076] 4) Mix 70 g of acrylic glue, 4 g of diphenylmethane diisocyanate, 0.8 g of silane coupling agent, 2 g of nickel powder, 3 g of silver powder, 3 g of copper powder, 6 g of polyethylene glycol and 6 g of polythiophene and stir evenly to obtain the antistatic glue;

[0077] 5) Coat the prepared antistatic glue on the heavy release force layer 16 of the antistatic release paper 1 prepared in 3); dry at a temperature of 110 °C, and the coating amount is 85 g / m 2 ; After drying, wind it up, with the antistatic release paper 1 on the outside and the conductive adhesive layer 2 on the inside. That is, the antistatic tape is obtained.

[0078] Comparative Example 1,

[0079] Commercially available antistatic tape (adhesive layer thickness 50 um).

[0080] The antistatic tapes prepared in the above Examples 1 to 6 and the antistatic tape in Comparative Example 1 were subjected to the following performance tests:

[0081] 1) Surface resistance value: directly measured using a surface resistance tester

[0082] 2) Peeling force: According to the tape peeling force test standard PSTC-101;

[0083] 3) Room temperature holding force: According to the tape holding force test standard PSTC-107.

[0084] Get the following table data:

[0085] Surface resistance value (Ω) Peeling force (kg / 25mm) Retention force (h) Example 1 <![CDATA[10 3 > 0.5 >72 Example 2 <![CDATA[10 3 > 2.5 >72 Example 3 <![CDATA[10 4 > 1.2 >72 Example 4 <![CDATA[10 3 > 1.5 >72 Example 5 <![CDATA[10 3 > 2.1 >72 Comparative Example 1 <![CDATA[10 8 > 1.4 >72

[0086] Table 1

[0087] From the surface resistance values ​​of the tapes of Examples 1 to 5 and Comparative Example 1 in Table 1 above, it can be seen that since the surface resistance value is proportional to the amount of static electricity generated and inversely proportional to the static electricity removal capability; the surface resistance values ​​of the tapes of Examples 1 to 5 are significantly lower than the surface resistance value of the tape of Comparative Example 1, the antistatic tape of the present invention generates less static electricity during the production process and has excellent static electricity removal capability.

[0088] From Table 1, the values ​​of peeling force and holding force of the adhesive tapes of Examples 1 to 5 are basically similar to those of the adhesive tape of Comparative Example 1. Therefore, the antistatic adhesive tape of the present invention has good peeling force and holding force.

[0089] In summary, the antistatic tape of the present invention can achieve low resistance of the product during production, processing and use, and avoid the generation of static electricity as much as possible; and the antistatic tape also has the advantages of not causing static electricity to accumulate and release, destroying the release, and causing poor unwinding.

[0090] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and illustration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different options and changes. The scope of the present invention is intended to be defined by the claims and their equivalents.​

Claims

1. An antistatic tape, characterized in that: The invention comprises an antistatic release paper and a conductive adhesive layer, wherein the antistatic release paper comprises an antistatic layer and a metal layer, the conductive adhesive layer comprises conductive particles, and the antistatic release paper comprises a light release force layer, an antistatic layer, a glassine base paper layer, an adhesive layer, a metal layer and a heavy release force layer in order from top to bottom, and the heavy release force layer is in contact with the conductive adhesive layer; Wherein, the metal layer and the conductive particles can form a conductive path for conducting away static electricity generated in the antistatic tape; The antistatic layer comprises the following raw material components in parts by mass: 30 to 60 parts by mass of antistatic material, 10 to 30 parts by mass of nano-scale metal oxide, and 50 to 100 parts by mass of solvent; The conductive adhesive layer comprises the following raw material components in parts by mass: 50 to 80 parts by mass of acrylic glue; 1 to 5 parts by mass of isocyanate cross-linking agent; 0.1 to 1 parts by mass of coupling agent; 2 to 15 parts by mass of conductive particles; and 2 to 10 parts by mass of antistatic agent; the antistatic agent comprises one or more of nano oxides, quaternary ammonium salts, sulfates, phosphates, polyethylene glycol, polythiophene and sodium alkyl sulfonates.

2. The antistatic tape according to claim 1, characterized in that The antistatic material is one or more of bis(trifluoromethylsulfimide), polyacetylene, ethoxylated alkylamine, polythiophene, polypyrrole, polyaniline, polyphenylene, polyphenylene ethylene, and sodium alkyl sulfonate.

3. The antistatic tape according to claim 1, characterized in that The thickness of the conductive adhesive layer is 0.01-0.1 mm.

4. The antistatic tape according to claim 1, characterized in that The isocyanate crosslinking agent includes diphenylmethane diisocyanate.

5. The antistatic tape according to claim 1, characterized in that: The coupling agent is a silane coupling agent.

6. The antistatic tape according to claim 1, characterized in that: The conductive particles are one or more of nickel powder, silver powder, copper powder, nickel-coated graphite conductive powder, silver-coated aluminum conductive powder, silver-coated copper conductive powder, and silver-coated nickel conductive powder.

Citation Information

Patent Citations

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