CN112500753A - Anti-adhesion and antistatic heat-seal coating and cover tape - Google Patents

Anti-adhesion and antistatic heat-seal coating and cover tape Download PDF

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Publication number
CN112500753A
CN112500753A CN202011379611.3A CN202011379611A CN112500753A CN 112500753 A CN112500753 A CN 112500753A CN 202011379611 A CN202011379611 A CN 202011379611A CN 112500753 A CN112500753 A CN 112500753A
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heat
coating
cover tape
seal coating
blocking
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CN112500753B (en
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吴琦琦
秦怀礼
王鹏
姚小琴
何教滢
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Zhejiang Jiemei Electronic and Technology Co Ltd
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Zhejiang Jiemei Electronic and Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
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    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
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    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/24—Electrically-conducting paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
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    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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    • C09D7/65—Additives macromolecular
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    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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    • C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
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    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
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    • C08K2003/2241—Titanium dioxide
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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/04—Antistatic
    • C—CHEMISTRY; METALLURGY
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Abstract

The invention belongs to the technical field of cover tape films, and particularly discloses an anti-adhesion and antistatic heat-seal coating and a cover tape; the anti-blocking and antistatic heat-sealing coating is formed by coating a coating liquid with Tg of 60-80 ℃, and the coating liquid comprises the following components: 1-3wt% of cellulose acetate butyrate, 9-18wt% of heat-seal resin, 76-86wt% of solvent, 2-3wt% of titanium dioxide conductive particles and 0.4-0.8wt% of dispersing agent; the cover tape comprises a base material layer and the anti-blocking and anti-static heat-seal coating formed on the base material layer in a coating mode. The invention can effectively solve the problems of large resin adhesion and unsatisfactory antistatic effect of the heat-sealing layer of the existing cover tape, and the prepared cover tape can not generate the phenomena of self adhesion and back winding; the tension is large, and the steel wire rope is not easy to damage; the antistatic effect is durable.

Description

Anti-adhesion and antistatic heat-seal coating and cover tape
Technical Field
The invention belongs to the technical field of cover tape films, and particularly relates to an anti-adhesion and antistatic heat-seal coating and a cover tape.
Background
In recent years, with the rapid progress of surface mounting of electronic parts, surface mounting technology has also been greatly advanced, and in order to store and transport small electronic chip parts more favorably, a carrier tape is generally used for packaging, and the electronic parts are housed in pockets of the carrier tape and sealed with a cover tape. The cover tape is stored in a winding form before use, the front surface and the back surface of the cover tape are overlapped after winding, the cover tape can be adhered and reversely wound due to factors such as storage environment and the like during storage, the cover tape is stored in a winding disc state after being sealed on a carrier tape, and the cover tape is contacted with an electronic component and the carrier tape during storage in the winding disc state, and the cover tape and the electronic component are sometimes adhered to influence the use of the electronic component. Meanwhile, the existence of static electricity on the cover tape can bring certain harm to the storage and transportation of electronic components, so that the development of the cover tape which does not cause adhesion and is antistatic is urgently needed in the market.
Because the heat-sealing layer resin of the cover tape has blocking property, an auxiliary anti-blocking agent is generally required to be added to prevent the problems caused by blocking of the cover tape product, and the anti-blocking agent is usually added to inorganic fillers, such as palm wax, polyolefin wax, spherical or broken talc particles, silica particles, alumina particles, mica particles, calcium carbonate, magnesium carbonate and the like, which may cause problems of non-uniform dispersion, agglomeration and the like in the heat-sealing coating liquid, thereby affecting the stripping performance of the cover tape. Meanwhile, the cover tape must provide some protection for preventing static electricity, the static electricity can cause damage such as breakdown to precise electronic components, the winding and unwinding of the cover tape can aggravate the problems, in order to avoid the damage of the static electricity to the electronic components, the prior art generally adds an ionic antistatic agent into a cover tape coating, hydrophilic groups in molecules of the antistatic agent are arranged towards one side of air, the antistatic agent is easy to absorb environmental moisture, or is combined with moisture in the air through a hydrogen bond to form a monomolecular conducting layer, so that the generated static electricity is rapidly leaked to achieve the antistatic purpose, but the antistatic agent is greatly influenced by air humidity, and the antistatic effect is short.
Disclosure of Invention
One of the purposes of the invention is to provide an anti-blocking and antistatic heat-sealing coating, the adopted anti-blocking agent does not have the problem of agglomeration, and the anti-blocking effect is good; the antistatic agent is not affected by air humidity, and the antistatic effect is durable.
In order to achieve the purpose, the invention adopts the following specific technical scheme:
an anti-blocking and antistatic heat-sealing coating is formed by coating a coating liquid with Tg of 60-80 ℃, and the coating liquid comprises the following components: 1-3wt% of cellulose acetate butyrate, 9-18wt% of heat-sealing resin, 76-86wt% of solvent, 2-3wt% of titanium dioxide conductive particles and 0.4-0.8wt% of dispersing agent.
Aiming at the problem of high resin adhesion of a heat-sealing layer of the existing cover tape, the invention solves the problem in the technical scheme through the following two aspects:
on one hand, cellulose acetate butyrate is used as an anti-blocking agent in the coating liquid formula, the content of the cellulose acetate butyrate is controlled to be 1-3wt%, if the content of the cellulose acetate butyrate is less than 1wt%, the material adhesion effect is not obviously improved, and if the content of the cellulose acetate butyrate is more than 3wt%, the heat sealing tensile force of a coating film is increased too much, so that the use of the cover tape is influenced. The butyryl content of the cellulose acetate butyrate is 26-39wt%, and in the range, as the butyryl content is increased, the dissolution range of CAB is expanded, and the compatibility with the heat-sealing resin is increased; the acetyl content of the cellulose acetate butyrate is 12-15wt%, the hydroxyl value content is 1-1.5%, if the hydroxyl value content is too high, water molecules in the air can be adsorbed, and the moisture resistance is poor; the cellulose acetate butyrate can be dissolved in various organic solvents, and hydroxyl groups of the cellulose acetate butyrate have certain polarity, so that the coating liquid has good wettability, is easy to form hydrogen bonds or generate cross-linking reaction with an adhesion layer of the coating liquid, can improve the adhesion of a heat sealing layer, and has an effect of gaining the heat sealing pulling force of heat sealing resin.
On the other hand, on the basis of taking cellulose acetate butyrate as an anti-blocking agent, the invention ensures that the heat-seal coating has good anti-blocking effect by controlling the Tg of the coating liquid to be 60-80 ℃. Tg is the glass transition temperature, which is the temperature at which a polymer changes from a glassy state to a highly elastic state, and is an important parameter for controlling the viscosity of the material; in the Tg temperature range of 60-80 ℃, the prepared heat-sealing coating liquid has good solvent release performance and faster forming, can effectively improve the working efficiency, and the prepared film has high surface strength in normal-temperature storage, is not easy to scratch or rebound and has good uncoiling effect.
Aiming at the problem that the heat-sealing layer resin of the existing cover tape is not ideal in antistatic effect, the invention solves the problems in the technical scheme by the following method:
the titanium dioxide conductive particles are used as conductive components in the formula of the coating liquid, so that the surface resistance value of the heat-seal coating is not influenced by air humidity, good conductive performance is realized, generated static charges are eliminated, the antistatic purpose is achieved, meanwhile, the adhesion of the heat-seal coating can be reduced, and the anti-adhesion effect is achieved; the content of the titanium dioxide conductive particles is controlled to be 2-3wt%, if the content is less than 2wt%, no obvious conductive effect is generated, and if the content is more than 3wt%, a sedimentation problem is generated.
Preferably, the heat-sealing resin is an acrylic resin. The heat-sealing resin can be selected from various common resins such as acrylic acid, polyurethane, acrylate, methacrylic acid products and the like, but the acrylic resin is preferred because the Tg of the cellulose acetate butyrate is 123-133 ℃, the Tg of the acrylic resin is 48-85 ℃, and the acrylic resin is blended with the CAB two polymer solutions to form a homogeneous material, so that the Tg of the heat-sealing layer is easily controlled to be 60-80 ℃.
Preferably, the solvent is ethyl acetate, isopropanol or butanone. These solvents can dissolve various kinds of heat-sealable resins and can form a uniform resin solution.
Preferably, the titanium dioxide conductive particles are particles coated with antimony tin oxide and/or indium tin oxide on the surface.
Further, the microscopic morphology of the titanium dioxide conductive particles is needle-shaped. The titanium dioxide conductive particles can also be spherical particles (diameter of 0.03-0.06 μm), but needle-shaped particles are more preferable because they have more probability of connecting with the passage and good conductivity, and can achieve the conductive effect needed by the product with less component content.
Further, the diameter of the needle-shaped titanium dioxide conductive particles is 0.2-0.3 μm, and the length is 5-6 μm.
Preferably, the dispersant is a phosphate dispersant. The dispersant can be hydrogenated castor oil derivatives, organic modified bentonite, and superfine SiO2And nonionic dispersants, phosphate dispersants, and the like, but phosphate dispersants are preferred because they not only produce a strong electrostatic repulsion of the electric double layer on the surface of the titanium dioxide conductive fine particles, but also enhance the wetting degree of water on the particle surface, and are more advantageous for the dispersion of the aqueous slurry of titanium dioxide conductive fine particles.
The invention also aims to provide a cover tape, which at least comprises a base material layer and the heat-seal coating, wherein the heat-seal coating is formed by uniformly coating the coating liquid on the base material layer in a micro-concave coating mode and then drying the coating liquid by hot air, and the thickness of the heat-seal coating is 1-4 mu m. When the thickness of the coating is less than 1 mu m, the heat-seal coating and the substrate layer have poor adsorbability and are easy to fall off, and the conductive capability cannot achieve the due effect; when the coating thickness is more than 4 μm, the cost is increased and the performance is not greatly improved.
Preferably, the substrate layer is formed by dry lamination of a PET (polyethylene terephthalate) film and a polyolefin cast film, the thickness of the PET film is 10-20 μm, and the total thickness of the dry lamination film is 40-50 μm.
Further, the thickness of the PET film was 15 μm, and the total thickness of the dry coating film was 45 μm.
The invention has the following beneficial effects:
1. cellulose acetate butyrate is used as an anti-adhesion agent and matched with heat-sealing resin to control the Tg of the coating liquid to be 60-80 ℃, so that the problems of self adhesion and electronic component adhesion in the use process of the cover tape can be effectively prevented, and the heat-sealing pulling force of the cellulose acetate butyrate to the heat-sealing resin has a gain effect; compared with the common inorganic filler in the prior art, the anti-blocking agent has no problems of uneven distribution and even agglomeration of the anti-blocking agent, and has better effect.
2. The titanium dioxide conductive particles are used as conductive components, so that the static charge generated can be rapidly eliminated to achieve the antistatic purpose, the surface resistance value is not influenced by air humidity, and the antistatic effect can be maintained for a long time; meanwhile, the adhesion of the heat-seal coating can be reduced, and the anti-adhesion effect is further enhanced; the titanium dioxide conductive particles are preferably acicular particles, and good conductivity can be achieved with less conductive material and thinner coating thickness.
3. The dispersant is preferably phosphate dispersant, and the dispersant can generate strong double-layer electrostatic repulsion action on the surface of the titanium dioxide conductive particles and enhance the wetting degree of water on the particle surface, so that the dispersion level of the titanium dioxide conductive particle slurry is improved, and the heat-seal coating is ensured to have good antistatic effect.
4. The heat-seal coating of the present invention has blocking resistance and can improve the tensile force of the cover tape (the tensile force of the cover tape of the present invention is in the range of 40-80 g), and the cover tape of the present invention has a surface resistance value of 105-108Omega, can effectively resist static electricity.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
An anti-blocking and antistatic heat-sealing coating is formed by coating a coating liquid, wherein the coating liquid comprises the following components: 1wt% of cellulose acetate butyrate, 10.2wt% of acrylic resin, 86wt% of ethyl acetate, 2wt% of titanium dioxide conductive particles and 0.8wt% of phosphate dispersant; wherein the titanium dioxide conductive particles adopt a stone industry FT300W product, and the product is needle-shaped titanium dioxide conductive particles with the diameter of 0.2-0.3 μm and the length of 5-6 μm; the phosphate dispersant is a product of Pico BYK-110.
Example 2
An anti-adhesion and antistatic heat-seal coating is formed by coating a coating liquid, the raw materials of the coating liquid are different from those of the coating liquid in the embodiment 1 in content, and the coating liquid specifically comprises the following components: 2wt% of cellulose acetate butyrate, 9.6wt% of acrylic resin, 86wt% of ethyl acetate, 2wt% of titanium dioxide conductive particles and 0.4wt% of phosphate dispersant.
Example 3
An anti-adhesion and antistatic heat-seal coating is formed by coating a coating liquid, the raw materials of the coating liquid are different from those of the coating liquid in the embodiment 1 in content, and the coating liquid specifically comprises the following components: 2wt% of cellulose acetate butyrate, 9.4wt% of acrylic resin, 86wt% of ethyl acetate, 2wt% of titanium dioxide conductive particles and 0.6wt% of phosphate ester dispersing agent.
Example 4
An anti-adhesion and antistatic heat-seal coating is formed by coating a coating liquid, the raw materials of the coating liquid are different from those of the coating liquid in the embodiment 1 in content, and the coating liquid specifically comprises the following components: 2.5wt% of cellulose acetate butyrate, 13.5wt% of acrylic resin, 81wt% of ethyl acetate, 2.2wt% of titanium dioxide conductive particles and 0.8wt% of phosphate dispersant.
Example 5
An anti-adhesion and antistatic heat-seal coating is formed by coating a coating liquid, the raw materials of the coating liquid are different from those of the coating liquid in the embodiment 1 in content, and the coating liquid specifically comprises the following components: 3wt% of cellulose acetate butyrate, 18wt% of acrylic resin, 76wt% of ethyl acetate, 2.2wt% of titanium dioxide conductive particles and 0.8wt% of phosphate dispersant.
Example 6
An anti-adhesion and antistatic heat-seal coating is formed by coating a coating liquid, the raw materials of the coating liquid are different from those of the coating liquid in the embodiment 1 in content, and the coating liquid specifically comprises the following components: 1wt% of cellulose acetate butyrate, 9.7wt% of acrylic resin, 86wt% of ethyl acetate, 2.5wt% of titanium dioxide conductive particles and 0.8wt% of phosphate dispersant.
Example 7
The anti-adhesion and anti-static heat-seal coating is formed by coating a coating liquid, the raw materials of the coating liquid have different contents from those of the coating liquid in the embodiment 1, and the coating liquid specifically comprises the following components: 1wt% of cellulose acetate butyrate, 9.2wt% of acrylic resin, 86wt% of ethyl acetate, 3wt% of titanium dioxide conductive particles and 0.8wt% of phosphate ester dispersing agent.
Comparative example 1
The comparative example provides a heat-seal coating formed by coating a coating solution without adding cellulose acetate butyrate, phosphate dispersant and conductive particles, and specifically comprises the following components: 85wt% of ethyl acetate and 15wt% of acrylic resin.
Cover tapes were prepared using examples 1-7 above and comparative example 1, as follows: examples 1-7 were prepared by dissolving cellulose acetate butyrate in a solvent to form solution a, dissolving a heat-sealable resin in a solvent to form solution B, and mixing solution a and solution B in the ratio of 1: 1, uniformly mixing, adding a dispersing agent (the specific ratio of the solution A to the solution B is shown in the following table 1), uniformly stirring, adding titanium dioxide conductive particles, and uniformly stirring again to obtain a heat-sealable coating liquid with Tg of 60-80 ℃; comparative example 1 coating liquid was obtained by directly and uniformly mixing acrylic resin and ethyl acetate; then coating the coating liquids of examples 1-7 and comparative example 1 on the substrate layer by a micro-concave coating method, and drying to obtain the required cover tape; the thickness of the heat-seal coating of the cover tape is 2mm, the base material layer is a composite film formed by dry coating of PET and PE casting films, the thickness of the PET film is 15 mu m, and the total thickness of the dry coating film is 45 mu m.
The performance tests performed on the cover tapes made in examples 1-7 and comparative example 1 are shown in table 1 below:
TABLE 1
Figure DEST_PATH_IMAGE002
Note: the performance test methods for the effect evaluation in table 1 are as follows:
surface resistance value:
placing an insulating cushion rubber pad at the bottom of the PET surface of the sample to enable the sample to be paved with a coating surface to be upward, and testing the resistance value of the coating surface by using a two-point resistance meter (a TREK-152-1 model is matched with a 2P probe);
peeling tension:
cutting the sample into strips with the width of 5.5mm, sealing the braid by matching with a carrier tape (sealing temperature is 185 ℃), fixing the stripped ends of the sealed sample strips by using a tensile machine clamp, and carrying out uniform-speed stripping force test at an angle of 30 DEG, wherein the stripping speed is 300 mm/min;
③ material sticking rate:
a. adhering the sample on a glass slide;
b. placing 50 small electronic chips on a sample;
c. carefully place the sample at 23 ℃, 50% RH for 24 hours;
d. turning the glass slide at 180 degrees, waiting for 20 seconds and not shaking;
e. counting electronic chips still remaining on sample tape
Evaluation of the effects: the material bonding rate is the number of chips in the step e/50, and the qualified product is obtained when the material bonding rate is less than 5%;
fourthly, reverse winding:
the sample is wound on the paper tube core, the length is 8000 m, the winding disc is placed for 30 days under the normal temperature condition, then the paper tube core is placed under the condition of vertical natural gravity, the sample naturally slips until all slips, the unwinding can be carried out together by a plurality of groups of samples, the back winding effect is evaluated by the total slipping time of the samples, and the unwinding time is less than 3 hours, so that the sample is a qualified product.
In conclusion, the heat-seal coating has good anti-blocking property and antistatic effect, and the cover tape prepared by the heat-seal coating has high tension and is not easy to damage.
This detailed description is to be construed as illustrative only and is not to be taken as limiting the invention, as any changes that may be made by a person skilled in the art after reading the present specification will be protected by the patent laws within the scope of the appended claims.

Claims (10)

1. An anti-adhesion, antistatic heat-seal coating, characterized in that: formed by coating a coating liquid with Tg of 60-80 ℃, wherein the coating liquid comprises the following components: 1-3wt% of cellulose acetate butyrate, 9-18wt% of heat-sealing resin, 76-86wt% of solvent, 2-3wt% of titanium dioxide conductive particles and 0.4-0.8wt% of dispersing agent.
2. An anti-blocking, anti-static heat-seal coating according to claim 1, characterized in that: the heat-sealing resin is acrylic resin.
3. An anti-blocking, anti-static heat-seal coating according to claim 1, characterized in that: the solvent is ethyl acetate, isopropanol or butanone.
4. An anti-blocking, anti-static heat-seal coating according to claim 1, characterized in that: the titanium dioxide conductive particles are particles coated with antimony tin oxide and/or indium tin oxide on the surfaces.
5. An anti-blocking, anti-static heat-seal coating according to claim 4, characterized in that: the microscopic morphology of the titanium dioxide conductive particles is needle-shaped.
6. An anti-blocking, anti-static heat-seal coating according to claim 5, characterized in that: the diameter of the needle-shaped titanium dioxide conductive particles is 0.2-0.3 μm, and the length is 5-6 μm.
7. An anti-blocking, anti-static heat-seal coating according to claim 1, characterized in that: the dispersant is phosphate dispersant.
8. A cover tape comprising at least a substrate layer and the heat-seal coating of any of claims 1-7, wherein: the heat-seal coating is formed by uniformly coating the coating liquid on a substrate layer in a micro-concave coating mode and then drying the substrate layer by hot air, and the thickness of the heat-seal coating is 1-4 mu m.
9. The cover tape of claim 8, wherein: the base material layer is formed by dry lamination of a PET film and a polyolefin cast film, the thickness of the PET film is 10-20 mu m, and the total thickness of the dry lamination film is 40-50 mu m.
10. The cover tape of claim 9, wherein: the thickness of the PET film is 15 μm, and the total thickness of the dry coating film is 45 μm.
CN202011379611.3A 2020-12-01 2020-12-01 Anti-adhesion and antistatic heat-seal coating and cover tape Active CN112500753B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107791638A (en) * 2017-10-26 2018-03-13 深圳市中欧新材料有限公司 A kind of cover strip and its application method
CN109575721A (en) * 2018-12-11 2019-04-05 宁波激智科技股份有限公司 A kind of antistatic coating fluid and a kind of antistatic silver-colored reflectance coating of high reliability

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107791638A (en) * 2017-10-26 2018-03-13 深圳市中欧新材料有限公司 A kind of cover strip and its application method
CN109575721A (en) * 2018-12-11 2019-04-05 宁波激智科技股份有限公司 A kind of antistatic coating fluid and a kind of antistatic silver-colored reflectance coating of high reliability

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