CN108239486A - Anti- snail line EVA adhesive film - Google Patents
Anti- snail line EVA adhesive film Download PDFInfo
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- CN108239486A CN108239486A CN201611215046.0A CN201611215046A CN108239486A CN 108239486 A CN108239486 A CN 108239486A CN 201611215046 A CN201611215046 A CN 201611215046A CN 108239486 A CN108239486 A CN 108239486A
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- Prior art keywords
- adhesive film
- eva adhesive
- snail line
- crosslinking agent
- eva
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34924—Triazines containing cyanurate groups; Tautomers thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/322—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of solar panels
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Photovoltaic Devices (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention provides a kind of anti-snail line EVA adhesive films, it is 28~33% that the anti-snail line EVA adhesive film, which selects vinyl acetate (VA) mass percent, the EVA raw materials that melt index is 22~28g/10min, the EVA raw materials further include the main crosslinking agent that mass percent is 0.5~0.8%, 0.4~0.8% assistant crosslinking agent, 0.1~0.3% light stabilizer, 0.1~0.5% coupling agent, 0.1~0.3% antioxidant and 0.1~0.3% hydrophobing agent.The anti-snail line EVA adhesive film of the present invention by adjusting the component of EVA raw materials in EVA adhesive film production process and the type of crosslinking agent, fundamentally solves the snail line caused by crosslinking agent remains, improves the stability that photovoltaic module uses；Meanwhile hydrophobing agent is added in EVA adhesive film raw materials for production, steam is prevented to pass through the backboard face of EVA adhesive film, the insulation performance of protection packaging material, so as to be further ensured that the normal power generation of photovoltaic module.
Description
Technical field
The present invention relates to a kind of EVA adhesive film more particularly to a kind of anti-snail line EVA adhesive films.
Background technology
During the photovoltaic module use of traditional EVA adhesive film after laminating, over time, photovoltaic module battery
On piece will appear dark lines line, due to being shaped like the crossopodia of snail, therefore referred to as snail line.
Found by making further EL imaging analysis to the photovoltaic module for generating snail line, the generation of snail line often along with
The hidden of cell piece splits appearance.In the prior art, crosslinking agent, main crosslinking agent, antioxidant, coupling agent are contained in the formula of EVA adhesive film
Auxiliary agents are waited, wherein causing the crosslinking of EVA resin, peroxide crosslinking agent as crosslinking agent usually using peroxidic products
It is the higher initiator of activity, still has more crosslinking agent to remain in photovoltaic module after lamination.
Existing research report points out that snail line has no influence to the power attenuation of photovoltaic module in itself, this is because snail
The area of line only occupies part minimum in entire photovoltaic module, but over time, and a large amount of generate of snail line certainly will
The stability of photovoltaic module can be had an impact.And discovery is dissected by carrying out stripping to the material at photovoltaic module snail line,
Cell piece at snail line does not have discoloration, and snail line discoloration position is always located in the intersection of silver paste and EVA adhesive film.Thus
Infer, generation and the EVA adhesive film of snail line have direct relationship.
By being detected discovery to the substance at snail line generation position, the substance at snail line generation position is carbonic acid
Silver.Since the peroxide used as crosslinking agent remaining in conventional EVA adhesive film is tert-butyl hydroperoxide carbonic acid -2- ethyl hexyls
Ester (its molecular structure is as shown in Figure 1), and contain carbonyl in tert-butyl hydroperoxide carbonic acid -2- ethylhexyls, when remaining on photovoltaic
Tert-butyl hydroperoxide carbonic acid -2- ethylhexyls in component continue that when decomposing CO can be generated2, these CO2Through the back of the body of EVA adhesive film
Plate face is combined, and reacted with the silver paste on cell piece and ultimately form silver carbonate, and then led with through the hidden steam for splitting place of cell piece
The generation of snail line is caused, reduces the stability of photovoltaic module quality.
In view of this, it is necessory to be improved to existing EVA adhesive film, to solve the above problems.
Invention content
The purpose of the present invention is to provide a kind of anti-snail line EVA adhesive film, which can effectively reduce light
The generation of snail line in component is lied prostrate, ensures the stability of photovoltaic module quality.
For achieving the above object, the present invention provides a kind of anti-snail line EVA adhesive film, wherein, the anti-snail line
It is 28~33% that EVA adhesive film, which selects vinyl acetate (VA) mass percent, the EVA raw materials that melt index is 22~28g/10min,
The EVA raw materials further include following components (by mass percentage)：
As a further improvement on the present invention, the EVA raw materials further include mass percent be 0.1~0.3% it is hydrophobic
Agent.
As a further improvement on the present invention, the hydrophobing agent is polysiloxanes.
As a further improvement on the present invention, the main crosslinking agent is containing dual-tert-butyl cyclohexane peroxide structure, half
The phase temperature that declines is the organic matter of 95~130 DEG C/h.
As a further improvement on the present invention, the main crosslinking agent is bis- for 1,1- dual-tert-butyls cyclohexane peroxide or 1,1-
Tert-butyl hydroperoxide -3,3,5- trimethyl-cyclohexanes.
As a further improvement on the present invention, the assistant crosslinking agent is Triallyl isocyanurate.
As a further improvement on the present invention, the assistant crosslinking agent is trimethylol-propane trimethacrylate.
As a further improvement on the present invention, the light stabilizer is double -2,2,6, the 6- tetramethyl piperidine alcohol esters of decanedioic acid.
As a further improvement on the present invention, the coupling agent is γ-(methacryloxypropyl) propyl trimethoxy silicane.
As a further improvement on the present invention, the antioxidant is four [β-(3,5- di-tert-butyl-hydroxy phenyl) third
Acid] pentaerythritol ester.
The beneficial effects of the present invention are：The anti-snail line EVA adhesive film of the present invention is by adjusting in EVA adhesive film production process
The component of EVA raw materials and the type of crosslinking agent can fundamentally solve the snail line caused by crosslinking agent remains, improve photovoltaic
The stability that component uses.
Description of the drawings
Fig. 1 is the schematic arrangement of crosslinking agent tert-butyl hydroperoxide carbonic acid -2- ethylhexyls in the prior art.
Fig. 2 is the molecular structure of main crosslinking agent 1,1- dual-tert-butyls peroxidating -3,3,5- trimethyl-cyclohexanes in the present invention
Schematic diagram.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, it is right in the following with reference to the drawings and specific embodiments
The present invention is described in detail.
The present invention provides a kind of anti-snail line EVA adhesive film, wherein, the anti-snail line EVA adhesive film selects vinyl acetate
(VA) the EVA raw materials that mass percent is 28~33%, melt index is 22~28g/10min.
The EVA raw materials further include mass percent as 0.5~0.8% main crosslinking agent, in the present embodiment, the main friendship
Join agent to select containing dual-tert-butyl cyclohexane peroxide structure, the organic matter that half life temperature is 95~130 DEG C/h.Preferably,
The main crosslinking agent is 1,1- dual-tert-butyls cyclohexane peroxide or 1,1- dual-tert-butyl peroxidating -3,3,5- 3-methyl cyclohexanols
Alkane.
Using 1,1- dual-tert-butyl peroxidating -3,3,5- trimethyl-cyclohexanes as main crosslinking agent will illustrate below
It is bright.Fig. 1 and Fig. 2, Fig. 1 are referred to as used main crosslinking agent tert-butyl hydroperoxide carbonic acid -2- ethylhexyls in the prior art
Molecular structural formula, as can be seen from Figure 1：Include carbonyl in the molecular structure of the tert-butyl hydroperoxide carbonic acid -2- ethylhexyls
Base 1, the decomposition product of the carbonyl 1 is CO2, with through hidden split of cell piece generation carbon is reacted into the steam in photovoltaic module
Acid, and further react with the silver paste in photovoltaic module and generate silver carbonate, so as to cause the generation of snail line.
Fig. 2 is point for the main crosslinking agent 1,1- dual-tert-butyls peroxidating -3,3,5- trimethyl-cyclohexanes that the present embodiment uses
Subformula, as can be seen from Figure 2：In the molecular structure of the 1,1- dual-tert-butyl peroxidating -3,3,5- trimethyl-cyclohexanes
Carbonyl 1 is not contained, therefore when 1,1- dual-tert-butyl peroxidating -3,3,5- trimethyl-cyclohexanes remain in photovoltaic as main crosslinking agent
When in component, continue not have CO in the product decomposed2, so as to prevent the generation of silver carbonate, avoid producing in photovoltaic module
Raw snail line.
Compared with crosslinking agent tert-butyl hydroperoxide carbonic acid -2- ethylhexyls of the prior art, the main crosslinking in the present invention
Agent 1,1- dual-tert-butyls cyclohexane peroxide and 1,1- dual-tert-butyls peroxidating -3,3,5- trimethyl-cyclohexanes with EVA raw materials
In other substances when reacting, faster, remaining main crosslinking agent is more under identical laminating technology, after lamination for reaction speed
It is few, cross-linking efficiency higher.
The EVA raw materials further include the assistant crosslinking agent that mass percent is 0.4~0.8%, and the assistant crosslinking agent can be
Triallyl isocyanurate, or trimethylol-propane trimethacrylate.
The EVA raw materials further include the light stabilizer that mass percent is 0.1~0.3%, it is preferred that the light stabilizer
For the double -2,2,6,6- tetramethyl piperidine alcohol esters of decanedioic acid.
The EVA raw materials further include the coupling agent that mass percent is 0.1~0.5%, it is preferred that the coupling agent is
γ-(methacryloxypropyl) propyl trimethoxy silicane.
The EVA raw materials further include the antioxidant that mass percent is 0.1~0.3%, it is preferred that the antioxidant is four
[β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol ester.
The EVA raw materials further include the hydrophobing agent that mass percent is 0.1~0.3%, it is preferred that the hydrophobing agent is poly-
Siloxanes.The addition of the hydrophobing agent can prevent steam from reacting through backboard face with the decomposition product of crosslinking agent,
Avoid snail line generate while further protection packaging material insulation performance, preferably protect photovoltaic module normal hair
Electricity improves the stability of photovoltaic module quality.
In conclusion by the present invention in that by the use of the organic matter of dual-tert-butyl cyclohexane peroxide structure is contained as EVA glue
Main crosslinking agent needed for film production, so as to avoid CO2Generation, fundamentally prevented the production of snail line in photovoltaic module
It is raw, it ensure that the stability of photovoltaic module quality.Meanwhile hydrophobing agent is added in EVA adhesive film raw materials for production, steam can be prevented
Across the backboard face of EVA adhesive film, the insulation performance of protection packaging material, so as to be further ensured that the normal power generation of photovoltaic module.
The above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to preferred embodiment to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that, it can modify to technical scheme of the present invention
Or equivalent replacement, without departing from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a kind of anti-snail line EVA adhesive film, it is characterised in that：The anti-snail line EVA adhesive film selects vinyl acetate (VA) quality
The EVA raw materials that percentage is 28~33%, melt index is 22~28g/10min, the EVA raw materials further include following components
(by mass percentage)：
2. anti-snail line EVA adhesive film according to claim 1, it is characterised in that：The EVA raw materials further include quality percentage
Than the hydrophobing agent for 0.1~0.3%.
3. anti-snail line EVA adhesive film according to claim 2, it is characterised in that：The hydrophobing agent is polysiloxanes.
4. anti-snail line EVA adhesive film according to claim 1, it is characterised in that：The main crosslinking agent is contains double tertiary fourths
Base cyclohexane peroxide structure, the organic matter that half life temperature is 95~130 DEG C/h.
5. anti-snail line EVA adhesive film according to claim 4, it is characterised in that：The main crosslinking agent is the bis- tertiary fourths of 1,1-
Base cyclohexane peroxide or 1,1- dual-tert-butyl peroxidating -3,3,5- trimethyl-cyclohexanes.
6. anti-snail line EVA adhesive film according to claim 1, it is characterised in that：The assistant crosslinking agent is different for triallyl
Cyanurate.
7. anti-snail line EVA adhesive film according to claim 1, it is characterised in that：The assistant crosslinking agent is trihydroxy methyl third
Alkane trimethyl acrylic ester.
8. anti-snail line EVA adhesive film according to claim 1, it is characterised in that：The light stabilizer is decanedioic acid double -2,
2,6,6- tetramethyl piperidine alcohol esters.
9. anti-snail line EVA adhesive film according to claim 1, it is characterised in that：The coupling agent is γ-(metering system
Acyl-oxygen) propyl trimethoxy silicane.
10. anti-snail line EVA adhesive film according to claim 1, it is characterised in that：The antioxidant is four [β-(3,5- bis-
Tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611215046.0A CN108239486A (en) | 2016-12-26 | 2016-12-26 | Anti- snail line EVA adhesive film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611215046.0A CN108239486A (en) | 2016-12-26 | 2016-12-26 | Anti- snail line EVA adhesive film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108239486A true CN108239486A (en) | 2018-07-03 |
Family
ID=62704729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611215046.0A Pending CN108239486A (en) | 2016-12-26 | 2016-12-26 | Anti- snail line EVA adhesive film |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101820001A (en) * | 2010-04-30 | 2010-09-01 | 南京红宝丽新材料有限公司 | Packaging adhesive film for solar cell |
| CN103045105A (en) * | 2012-12-11 | 2013-04-17 | 江苏鹿山光伏科技有限公司 | Low temperature super-fast setting EVA (Ethylene Vinyl Acetate) coating |
| CN104479573A (en) * | 2014-12-12 | 2015-04-01 | 常州六合新能源有限公司 | Packaging material polyolefin adhesive film for photovoltaic modules and preparation process thereof |
| CN104762023A (en) * | 2015-03-26 | 2015-07-08 | 安徽国风塑业股份有限公司 | EVA (ethylene-vinyl acetate) precoating packaging adhesive film and preparation method thereof |
| CN107845696A (en) * | 2016-09-19 | 2018-03-27 | 阿特斯(中国)投资有限公司 | A kind of double wave component and preparation method thereof |
-
2016
- 2016-12-26 CN CN201611215046.0A patent/CN108239486A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101820001A (en) * | 2010-04-30 | 2010-09-01 | 南京红宝丽新材料有限公司 | Packaging adhesive film for solar cell |
| CN103045105A (en) * | 2012-12-11 | 2013-04-17 | 江苏鹿山光伏科技有限公司 | Low temperature super-fast setting EVA (Ethylene Vinyl Acetate) coating |
| CN104479573A (en) * | 2014-12-12 | 2015-04-01 | 常州六合新能源有限公司 | Packaging material polyolefin adhesive film for photovoltaic modules and preparation process thereof |
| CN104762023A (en) * | 2015-03-26 | 2015-07-08 | 安徽国风塑业股份有限公司 | EVA (ethylene-vinyl acetate) precoating packaging adhesive film and preparation method thereof |
| CN107845696A (en) * | 2016-09-19 | 2018-03-27 | 阿特斯(中国)投资有限公司 | A kind of double wave component and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| NAMSU KIM 等: "Analysis and reproduction of snail trails on silver grid lines in crystall silicon photovoltaic modules", 《SOLAR ENERGY》 * |
| 傅德海 等: "《干粉砂浆应用指南》", 30 April 2006, 中国建材工业出版社 * |
| 天津轻工业学院编: "《塑料助剂》", 31 March 1997, 中国轻工业出版社 * |
| 王训钜: "《带压堵漏技术》", 31 July 1992, 中国石化出版社 * |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 199, Lushan Road, Suzhou hi tech Zone, Suzhou City, Jiangsu Province Applicant after: Atlas sunshine Power Group Co.,Ltd. Applicant after: CHANGSHU TEGU NEW MATERIAL TECHNOLOGY Co.,Ltd. Address before: No. 199, Lushan Road, Suzhou high tech Zone, Jiangsu Province, 215011 Applicant before: CSI SOLAR POWER GROUP Co.,Ltd. Applicant before: CHANGSHU TEGU NEW MATERIAL TECHNOLOGY Co.,Ltd. |
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Application publication date: 20180703 |