CN108221486A - A kind of corrosion-resistant super electrolytic capacitor diaphragm paper and preparation method thereof - Google Patents
A kind of corrosion-resistant super electrolytic capacitor diaphragm paper and preparation method thereof Download PDFInfo
- Publication number
- CN108221486A CN108221486A CN201810006289.6A CN201810006289A CN108221486A CN 108221486 A CN108221486 A CN 108221486A CN 201810006289 A CN201810006289 A CN 201810006289A CN 108221486 A CN108221486 A CN 108221486A
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- electrolytic capacitor
- metal oxide
- corrosion
- slurry
- paper
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- 239000003990 capacitor Substances 0.000 title claims abstract description 32
- 230000007797 corrosion Effects 0.000 title claims abstract description 16
- 238000005260 corrosion Methods 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 229920000433 Lyocell Polymers 0.000 claims abstract description 23
- 239000000835 fiber Substances 0.000 claims abstract description 19
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 17
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 14
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000292 calcium oxide Substances 0.000 claims abstract description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 21
- 238000010009 beating Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000005360 mashing Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000009288 screen filtration Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 150000002927 oxygen compounds Chemical class 0.000 claims 1
- 238000005213 imbibition Methods 0.000 abstract description 2
- 238000004383 yellowing Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 18
- 230000035699 permeability Effects 0.000 description 9
- 230000005611 electricity Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011147 inorganic material Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/06—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type
- D21F11/08—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type paper or board consisting of two or more layers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/52—Separators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Paper (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The present invention relates to a kind of corrosion-resistant super electrolytic capacitor diaphragm papers and preparation method thereof.A kind of corrosion-resistant super electrolytic capacitor diaphragm paper, the super electrolytic capacitor paper are made of tencel fiber and metal oxide, and tencel fiber is 50~95% by weight percentage, and metal oxide is 5~50%；Metal oxide is aluminium oxide, one or more in calcium oxide, magnesia.The present invention obtains corrosion-resistant super electrolytic capacitor diaphragm paper by adding in metal oxide particle in tencel slurry, while has and have preferable intensity, good water imbibition, relatively low internal resistance, and not yellowing after use.
Description
Technical field
The present invention relates to a kind of corrosion-resistant super electrolytic capacitor diaphragm papers and preparation method thereof.
Background technology
Electrolytic capacitor is one of component important in electronics industry, in circuit in addition to having filtering, decoupling and signal
Outside the effect of coupling, also special role is played in special circuit such as circuit for rectifying, power circuit and ac motor start-up circuit.
It is widely used in the fields such as automobile industry, security protection industry, medical electronics, telecomputer, electronic toy and Industry Control.Electrolysis electricity
Container paper is the gasket material that electrolyte is adsorbed in electrolytic capacitor, its performance directly affects the quality of electrolytic capacitor.
Super electrolytic capacitor is that occur recently as the high speed development of electronics technology and the breakthrough of material science
New power type electronic component.It has between general electrolytic capacitor and battery than general electrolytic capacitor higher
Capacity, thousands of farads can be up to；Higher discharge power more specific than common batteries, discharge current is up to kilo-ampere.Letter
Yan Zhi, it has capacitance of battery and the fast charging and discharging performance of capacitor, while also has that safe and reliable, the scope of application is wide
The features such as.Ultracapacitor is in automobile (particularly electric vehicle), electric power, railway, communication, national defence and consumer electrical product etc.
Aspect has huge application value and market potential.
Contain fluorine element in the electrolyte of super electrolytic capacitor, during the use of ultracapacitor, fluorine can be formed
Change hydrogen, corrode super electrolytic capacitor paper, super electrolytic capacitor paper is caused to turn to be yellow, and the use of super electrolytic capacitor is produced
Raw adverse effect.
Invention content
Present invention aim to address the defects of above-mentioned background technology, first purpose of the invention is to provide a kind of corrosion resistant
Super electrolytic capacitor diaphragm paper is lost, the paper tightness prepared in this way is low, and intensity is preferable, and aperture is small and uniform, and
With preferable corrosion resistance, it is suitable for use on ultracapacitor.Second object of the present invention is to provide above-mentioned diaphragm paper
Preparation method.
In order to realize above-mentioned first purpose, present invention employs following technical solutions：
A kind of corrosion-resistant super electrolytic capacitor diaphragm paper, the super electrolytic capacitor paper are aoxidized by tencel fiber and metal
Object is formed, and tencel fiber is 50~95% by weight percentage, and metal oxide is 5~50%；Metal oxide is oxidation
It is one or more in aluminium, calcium oxide, magnesia.
Preferably, the metal oxide is one or both of particle shape or fibre morphology.
Preferably, tencel fiber is 70~95% by weight percentage, metal oxide is 5~30%.
Inventive formulation inorganic material less than 5%, keep less in production process, leads to super electrolytic capacitor by inorganic material
The corrosion resistance of device paper is poor；Inorganic material is higher than 50%, and the intensity of paper is too low, it is difficult to meet super electrolytic capacitor and assemble
Intensity requirement in journey.
In order to realize above-mentioned second purpose, present invention employs following technical solutions：
1) original slurry material that concentration mass concentration between 2.5~5.0% will be made after 50~95 parts of tencel slurry plus water；
2) obtained tencel original slurry material is obtained into mass concentration in 3.0~5.0%, beating degree 60 through disc mill or beater
The slurry A of~98 ° of SR, weight in wet base 5.0g~20g；
3) 5~50 parts of metal oxide particle is added in agitator, after ultrasonic wave is uniformly dispersed, using 200
Purpose screen filtration, the metal oxide particle after filtering are added in slurry A, obtain slurry B；
4) slurry B is by double cylinder composite moldings, is obtained after squeezing, drying, crimp and cut after molding corrosion-resistant
Super electrolytic capacitor diaphragm paper.
Preferably, the mashing mode includes hollanderbeater shiny beating, single or double mill is glued in shape defibrination
One kind.
The present invention, by adding in metal oxide particle in tencel slurry, is obtained as a result of above-mentioned technical solution
Corrosion-resistant super electrolytic capacitor diaphragm paper was obtained, while has and has preferable intensity, good water imbibition, relatively low internal resistance,
And not yellowing after use.
Description of the drawings
Fig. 1 is diaphragm of supercapacitor paper color contrast after the completion of present invention test.
Specific embodiment
Reference example 1
85 ° of SR of tencel fiber beating degree, are manufactured paper with pulp using cylinder mould machine, copy paper technique routinely technique, page detection tightness,
The indexs such as thickness, tensile strength, air permeability are made the indexs such as capacity, leakage current, the internal resistance of ultracapacitor detection capacitance, are surpassed
After the completion of grade capacitor Indexs measure, diaphragm of supercapacitor paper color is observed.
Embodiment 1
85 ° of SR of tencel fiber beating degree, 0.8 μm of ultra-fine alumina particle, by 95:5 quality proportioning, using cylinder mould machine
It manufactures paper with pulp, routinely technique, the indexs such as page detection tightness, thickness, tensile strength, air permeability make super capacitor to copy paper technique
The indexs such as capacity, leakage current, internal resistance of device detection capacitance, after the completion of ultracapacitor Indexs measure, observation ultracapacitor every
Film paper color.
Embodiment 2
85 ° of SR of tencel fiber beating degree, 0.8 μm of ultra-fine alumina particle, by 90:10 quality proportioning, using cylinder paper
Machine is manufactured paper with pulp, and routinely technique, the indexs such as page detection tightness, thickness, tensile strength, air permeability make super electricity to copy paper technique
The indexs such as capacity, leakage current, internal resistance of container detection capacitance after the completion of ultracapacitor Indexs measure, observe ultracapacitor
Diaphragm paper color.
Embodiment 3
85 ° of SR of tencel fiber beating degree, 0.8 μm of ultra-fine alumina particle, by 85:15 quality proportioning, using cylinder paper
Machine is manufactured paper with pulp, and routinely technique, the indexs such as page detection tightness, thickness, tensile strength, air permeability make super electricity to copy paper technique
The indexs such as capacity, leakage current, internal resistance of container detection capacitance after the completion of ultracapacitor Indexs measure, observe ultracapacitor
Diaphragm paper color.
Embodiment 4
85 ° of SR of tencel fiber beating degree, 0.8 μm of ultra-fine alumina particle, by 80:20 quality proportioning, using cylinder paper
Machine is manufactured paper with pulp, and routinely technique, the indexs such as page detection tightness, thickness, tensile strength, air permeability make super electricity to copy paper technique
The indexs such as capacity, leakage current, internal resistance of container detection capacitance after the completion of ultracapacitor Indexs measure, observe ultracapacitor
Diaphragm paper color.
Embodiment 5
90 ° of SR of tencel fiber beating degree, 0.5 μm of ultra-fine alumina particle, by 90:10 quality proportioning, using cylinder paper
Machine is manufactured paper with pulp, and routinely technique, the indexs such as page detection tightness, thickness, tensile strength, air permeability make super electricity to copy paper technique
The indexs such as capacity, leakage current, internal resistance of container detection capacitance after the completion of ultracapacitor Indexs measure, observe ultracapacitor
Diaphragm paper color.
Embodiment 6
90 ° of SR of tencel fiber beating degree, 0.5 μm of ultra-fine alumina particle, by 80:20 quality proportioning, using cylinder paper
Machine is manufactured paper with pulp, and routinely technique, the indexs such as page detection tightness, thickness, tensile strength, air permeability make super electricity to copy paper technique
The indexs such as capacity, leakage current, internal resistance of container detection capacitance after the completion of ultracapacitor Indexs measure, observe ultracapacitor
Diaphragm paper color.
Embodiment 7
90 ° of SR of tencel fiber beating degree, 0.5 μm of ultra-fine alumina particle, by 75:25 quality proportioning, using cylinder paper
Machine is manufactured paper with pulp, and routinely technique, the indexs such as page detection tightness, thickness, tensile strength, air permeability make super electricity to copy paper technique
The indexs such as capacity, leakage current, internal resistance of container detection capacitance after the completion of ultracapacitor Indexs measure, observe ultracapacitor
Diaphragm paper color.
Embodiment 8
90 ° of SR of tencel fiber beating degree, 0.5 μm of ultra-fine alumina particle, by 70:30 quality proportioning, using cylinder paper
Machine is manufactured paper with pulp, and routinely technique, the indexs such as page detection tightness, thickness, tensile strength, air permeability make super electricity to copy paper technique
The indexs such as capacity, leakage current, internal resistance of container detection capacitance after the completion of ultracapacitor Indexs measure, observe ultracapacitor
Diaphragm paper color.
The test data of above-mentioned each embodiment is as follows：
Claims (5)
1. a kind of corrosion-resistant super electrolytic capacitor diaphragm paper, which is characterized in that the super electrolytic capacitor paper is by tencel fiber
It is formed with metal oxide, tencel fiber is 50~95% by weight percentage, and metal oxide is 5~50%；Metal oxygen
Compound is aluminium oxide, one or more in calcium oxide, magnesia.
A kind of 2. corrosion-resistant super electrolytic capacitor diaphragm paper according to claim 1, which is characterized in that metal oxide
For one or both of particle shape or fibre morphology.
A kind of 3. corrosion-resistant super electrolytic capacitor diaphragm paper according to claim 1, which is characterized in that percentage by weight
It is 70~95% than meter tencel fiber, metal oxide is 5~30%.
A kind of 4. method for preparing the diaphragm paper described in claims 1 to 3 any one claim, it is characterised in that this method
Include the following steps：
1) original slurry material that concentration mass concentration between 2.5~5.0% will be made after 50~95 parts of tencel slurry plus water；
2) by obtained tencel original slurry material through disc mill or beater obtain mass concentration 3.0~5.0%, beating degree 60~
The slurry A of 98 ° of SR, weight in wet base 5.0g~20g；
3) 5~50 parts of metal oxide particle is added in agitator, after ultrasonic wave is uniformly dispersed, using 200 purposes
Screen filtration, the metal oxide particle after filtering are added in slurry A, obtain slurry B；
4) slurry B is by double cylinder composite moldings, is obtained after squeezing, drying, crimp and cut after molding corrosion-resistant super
Electrolytic capacitor diaphragm paper.
5. according to the method described in claim 4, it is characterized in that, the mashing mode is glued shape including hollanderbeater and is beaten
Slurry, single or double mill glue one kind in shape defibrination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006289.6A CN108221486B (en) | 2018-01-04 | 2018-01-04 | Corrosion-resistant super electrolytic capacitor diaphragm paper and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006289.6A CN108221486B (en) | 2018-01-04 | 2018-01-04 | Corrosion-resistant super electrolytic capacitor diaphragm paper and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108221486A true CN108221486A (en) | 2018-06-29 |
| CN108221486B CN108221486B (en) | 2020-12-29 |
Family
ID=62642846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810006289.6A Active CN108221486B (en) | 2018-01-04 | 2018-01-04 | Corrosion-resistant super electrolytic capacitor diaphragm paper and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108221486B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056403A (en) * | 2018-09-10 | 2018-12-21 | 浙江凯恩特种纸业有限公司 | A kind of high intensity super electrolytic capacitor diaphragm paper and preparation method thereof |
| CN113764821A (en) * | 2021-09-08 | 2021-12-07 | 山东工业陶瓷研究设计院有限公司 | Boron nitride fiber diaphragm, diaphragm preparation method and lithium thermal battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696558A (en) * | 2009-10-23 | 2010-04-21 | 浙江凯恩特种材料股份有限公司 | Super electrolytic capacitor paper |
| CN102728144A (en) * | 2012-06-27 | 2012-10-17 | 吕凯 | Battery capacitor membrane filtration material prepared by using wet papermaking forming process, and preparation method thereof |
| CN105474339A (en) * | 2013-08-22 | 2016-04-06 | 康宁股份有限公司 | Separator based on fibrous ceramic material for ultracapacitors, EDLC, hybrid capacitor, fuel cell and battery |
| CN105990038A (en) * | 2016-01-27 | 2016-10-05 | 安徽旭峰电容器有限公司 | Safe environment-friendly and simple-preparation supercapacitor separator material |
-
2018
- 2018-01-04 CN CN201810006289.6A patent/CN108221486B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696558A (en) * | 2009-10-23 | 2010-04-21 | 浙江凯恩特种材料股份有限公司 | Super electrolytic capacitor paper |
| CN102728144A (en) * | 2012-06-27 | 2012-10-17 | 吕凯 | Battery capacitor membrane filtration material prepared by using wet papermaking forming process, and preparation method thereof |
| CN105474339A (en) * | 2013-08-22 | 2016-04-06 | 康宁股份有限公司 | Separator based on fibrous ceramic material for ultracapacitors, EDLC, hybrid capacitor, fuel cell and battery |
| CN105990038A (en) * | 2016-01-27 | 2016-10-05 | 安徽旭峰电容器有限公司 | Safe environment-friendly and simple-preparation supercapacitor separator material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056403A (en) * | 2018-09-10 | 2018-12-21 | 浙江凯恩特种纸业有限公司 | A kind of high intensity super electrolytic capacitor diaphragm paper and preparation method thereof |
| CN113764821A (en) * | 2021-09-08 | 2021-12-07 | 山东工业陶瓷研究设计院有限公司 | Boron nitride fiber diaphragm, diaphragm preparation method and lithium thermal battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108221486B (en) | 2020-12-29 |
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Address after: 323300 no.1008 Kain Road, miaogao street, Suichang County, Lishui City, Zhejiang Province Applicant after: ZHEJIANG KAN SPECIAL PAPER Co.,Ltd. Applicant after: ZHEJIANG KAN SPECIALTIES MATERIAL Co.,Ltd. Address before: 323399 no.1008 Kain Road, Suichang County, Lishui City, Zhejiang Province Applicant before: ZHEJIANG KAN SPECIALTIES MATERIAL Co.,Ltd. Applicant before: ZHEJIANG KAN SPECIAL PAPER Co.,Ltd. |
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Effective date of registration: 20210930 Address after: 323300 Yuankou Village, Miaogao Street, Suichang County, Lishui City, Zhejiang Province Patentee after: Zhejiang Kaien New Material Co.,Ltd. Patentee after: ZHEJIANG KAN SPECIAL PAPER Co.,Ltd. Address before: 323300 no.1008 Kain Road, miaogao street, Suichang County, Lishui City, Zhejiang Province Patentee before: ZHEJIANG KAN SPECIAL PAPER Co.,Ltd. Patentee before: ZHEJIANG KAN SPECIALTIES MATERIAL Co.,Ltd. |
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Effective date of registration: 20211210 Address after: 323399 no.1008 Kain Road, Suichang County, Lishui City, Zhejiang Province Patentee after: Zhejiang KAN Specialties Material Co.,Ltd. Patentee after: Zhejiang Kaien New Material Co.,Ltd. Patentee after: ZHEJIANG KAN SPECIAL PAPER CO.,LTD. Address before: 323300 Yuankou Village, Miaogao Street, Suichang County, Lishui City, Zhejiang Province Patentee before: Zhejiang Kaien New Material Co.,Ltd. Patentee before: Zhejiang Kaien Special Paper Co., Ltd |