CN1268803C - Nickel-copper composite metal textile and preparation method thereof - Google Patents
Nickel-copper composite metal textile and preparation method thereof Download PDFInfo
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- CN1268803C CN1268803C CN 200410022831 CN200410022831A CN1268803C CN 1268803 C CN1268803 C CN 1268803C CN 200410022831 CN200410022831 CN 200410022831 CN 200410022831 A CN200410022831 A CN 200410022831A CN 1268803 C CN1268803 C CN 1268803C
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 41
- 239000002184 metal Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000002131 composite material Substances 0.000 title abstract description 4
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 title abstract description 3
- 239000004753 textile Substances 0.000 title 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 111
- 239000004744 fabric Substances 0.000 claims abstract description 54
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 54
- 238000007747 plating Methods 0.000 claims abstract description 38
- 239000010410 layer Substances 0.000 claims abstract description 27
- 239000000126 substance Substances 0.000 claims abstract description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052802 copper Inorganic materials 0.000 claims abstract description 23
- 239000010949 copper Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 12
- 239000002346 layers by function Substances 0.000 claims abstract description 10
- 238000009713 electroplating Methods 0.000 claims abstract description 6
- 229910018484 Ni—Cu—Ni Inorganic materials 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 20
- 229910045601 alloy Inorganic materials 0.000 claims description 14
- 239000000956 alloy Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- 229920004934 Dacron® Polymers 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000004952 Polyamide Substances 0.000 claims description 7
- 229920002647 polyamide Polymers 0.000 claims description 7
- 230000008021 deposition Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 3
- 206010070834 Sensitisation Diseases 0.000 abstract description 4
- 230000004913 activation Effects 0.000 abstract description 4
- 230000008313 sensitization Effects 0.000 abstract description 4
- 229920006052 Chinlon® Polymers 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 229920004933 Terylene® Polymers 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000011241 protective layer Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920002994 synthetic fiber Polymers 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical class O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 2
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 2
- 235000011180 diphosphates Nutrition 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- KERTUBUCQCSNJU-UHFFFAOYSA-L nickel(2+);disulfamate Chemical compound [Ni+2].NS([O-])(=O)=O.NS([O-])(=O)=O KERTUBUCQCSNJU-UHFFFAOYSA-L 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000001119 stannous chloride Substances 0.000 description 2
- 235000011150 stannous chloride Nutrition 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 229910000085 borane Inorganic materials 0.000 description 1
- 229910010277 boron hydride Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- LEKPFOXEZRZPGW-UHFFFAOYSA-N copper;dicyanide Chemical compound [Cu+2].N#[C-].N#[C-] LEKPFOXEZRZPGW-UHFFFAOYSA-N 0.000 description 1
- PEVJCYPAFCUXEZ-UHFFFAOYSA-J dicopper;phosphonato phosphate Chemical compound [Cu+2].[Cu+2].[O-]P([O-])(=O)OP([O-])([O-])=O PEVJCYPAFCUXEZ-UHFFFAOYSA-J 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011536 re-plating Methods 0.000 description 1
Landscapes
- Chemically Coating (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The present invention discloses a nickel-copper composite metal fabric and a preparation method thereof. In the method, a terylene fabric or a chinlon fabric are firstly plated with one layer of metal nickel by chemical plating after surface coarsening, sensitization and activation, then plated with one layer of copper as a middle layer by electroplating, and finally plated with one layer of nickel as a protective layer to form a Ni-Cu-Ni functional layer, wherein the total amount of the nickel in the functional layer is controlled between 5 to 20 g/m<2>, and the mass ratio of steel to the nickel is 1.5 to 3: 1. The prepared metal fabric has favorable electromagnetic shielding efficiency even on low frequency electromagnetic waves, the shielding efficiency of the metal fabric is from 60 to 90dB if the frequencies of the electromagnetic waves are from 10KHz to 3GHz, and the shielding efficiency of the metal fabric is from 50 to 70dB if the frequencies of the electromagnetic waves are less than 10KHz.
Description
Technical field
The present invention relates to a kind of metal fabric and preparation method thereof, particularly a kind of Electromagnetically shielding fabrics and method thereof of nickel deposited-copper-nickel composite deposite preparation on woven dacron or POLYAMIDE FABRIC.
Background technology
Along with developing rapidly and growth in the living standard of modern science and technology; high-tech product more and more is subjected to people's favor; bring facility in life and spiritual enjoyment to people; yet the electromagnetic radiation of Chan Shenging is also more and more serious thereupon, and anti-electromagnetic radiation also becomes the environmental protection topic that people pay close attention to.The method of the effective anti-electromagnetic radiation of most convenient is to adopt electromagnetic shielding, promptly utilizes conduction, and the wire netting that magnetic property is good by reflection effect and sink effect, intercepts the propagation of electromagnetic radiation.The method of the nickel cloth of relevant both at home and abroad preparation electromagnetic shielding, copper cloth, composite conducting cloth is more, mainly contains electroless plating method, rubbing method, vaccum gas phase sedimentation method, metal fibre blending method etc.But disclosed in the past electroless plating method prepares in the patent documentation of non-metal base conductive fabric (as patent of invention CN00103011.6 and CN00125485.5), owing to the employing of formaldehyde causes environment damage, threatens operating personnel healthy; Rubbing method is that the powder (as nickel powder, silver powder, graphite powder etc.) that will have electric conductivity mixes in certain adhesive, be coated on and be prepared into conductive fabric after fabric surface and drying are solidified, but this method is difficult to control conductive coating thickness, and the adhesion of conductive coating and fabric is low, bending, flexibility and permeability are all relatively poor, and electric property is wayward; Metal fibre blending method is mingled with in fabric and inweaves wire or carbon element silk and constitute, this material manufacturing technique complexity, and the cost height is not suitable for bending, and its electric property (as resistivity etc.) also wayward, capability of electromagnetic shielding is also not ideal enough; Use the conductive fabric cost height that vaccum gas phase sedimentation method (as patent of invention CN02114393.5 etc.) then makes production, shield effectiveness is limited.
Summary of the invention
The present invention aim to provide a kind of with low cost, ambrose alloy composition metal fabric shield effectiveness, that have soft feel and preparation method thereof preferably can both be arranged under the full frequency band electromagnetic wave.The technical scheme that the present invention takes is, woven dacron or POLYAMIDE FABRIC be first chemical plating layer of metal nickel after surface coarsening, sensitization, activation, and the re-plating layer of copper is as the intermediate layer, and then electroplates one deck nickel, forms the Ni-Cu-Ni functional layer; The amount of chemical plating of metal nickel is 0.5～8g/m
2, electroplating copper amount is 3～30g/m
2, electroplating nickel amount is 1～20g/m
2Total nickel amount is 5～20g/m in the gained functional coating
2, the mass ratio of copper and nickel is (1.5～3): 1.
Specifically, the solution of the present invention is:
1. ambrose alloy composition metal fabric that is used for the electromagnetic shielding field, as functional coating, it is characterized in that the innermost layer of functional coating is a chemical Ni-plating layer at woven dacron or POLYAMIDE FABRIC surface deposition ambrose alloy composition metal, the intermediate layer is a copper electroplating layer, and outermost layer is an electroless nickel layer; Total nickel amount is 5-20g/m in the functional coating
2, the mass ratio of copper and nickel is (1.5～3): 1.The shield effectiveness of described ambrose alloy composition metal fabric, wave frequency described metal fabric in 10KHz～3GHz scope the time is at 60～90dB; The shield effectiveness of wave frequency described metal fabric when 10KHz is following is 50～70dB.
2. the method for preparing above-mentioned ambrose alloy composition metal fabric is that chemical nickel plating, electro-coppering, three steps in sequence of electronickelling are carried out on woven dacron or POLYAMIDE FABRIC base material, forms the Ni-Cu-Ni functional layer on base material.Total deposition of metallic nickel is 5-20g/m
2, the copper of deposition and the mass ratio of nickel are (1.5～3): 1.Weightless 5-25% when woven dacron or the alligatoring of POLYAMIDE FABRIC base material.
Concrete technology is described below:
(1) surface preparation
Woven dacron or continuous synthetic fibre cloth base material must carry out surface preparation to it before implementing the metal deposition, this process comprises alligatoring, sensitization, three steps of activation.Hot solution when coarsening solution can select for use concentrated base or concentrated acid to be heated to 60～100 ℃, the control coarsening time is to guarantee the weightless 5-25% of base material after the alligatoring.More excellent alligatoring effect, being reflected on the weightless index is 10-16%, in this scope, the metal level that is deposited on the base material not only has extraordinary adhesion with base material, can also guarantee that metal fabric of the present invention has soft hand feeling simultaneously.
Woven dacron after the alligatoring or continuous synthetic fibre cloth base material are after conventional chemical plating sensitized solution, the palladium bichloride concentration of 1.0～1.5g/L is the chemical plating activated solution of 0.050～0.15g/L, to finish substrate surface pretreatment process of the present invention through stannous chloride concentration.
(2) chemical nickel plating
Enter through the woven dacron of surface preparation or continuous synthetic fibre cloth base material and to sink nickel in the chemical nickel plating system and handle.Available chemical nickel plating system comprises with the hypophosphites being the chemical nickel plating system of reductant, with the boron hydride be reductant the chemical nickel plating system, be the chemical nickel plating system of reductant and be chemical nickel plating system of reductant etc. with the hydrazine with the amido borine, wherein, be that the chemical nickel plating system of reductant is the preferred system of the present invention with the hypophosphites.The nickel amount is controlled at 0.5～8g/m on the chemical nickel plating
2, wherein preferred chemical nickel plating amount is 4～6g/m
2Woven dacron or continuous synthetic fibre cloth are finished the base material conductionization of fabric of the present invention and the ground floor magnetic conduction of functional layer and are handled behind chemical plating one deck nickel.
(3) electro-coppering
Behind the base material chemical nickel plating, enter and electroplate layer of metal copper in the copper electroplating solution.Available copper plating bath comprises cyanide copper plating system, sulfate copper facing system, pyrophosphate copper plating system etc., and wherein, the pyrophosphate copper plating system is the preferred system of the present invention.The copper amount is controlled at 3～30g/m in the electro-coppering
2, wherein preferred electric plated with copper amount is 10～18g/m
2This operation is finished the intermediate conductive layer of metal fabric functional layer of the present invention.
(4) electronickelling
After the base material electro-coppering, enter and electroplate layer of metal nickel in the electronickelling solution.Available nickel-plating liquid comprises a watt type nickel plating system, chloride nickel plating system, borofluoride nickel plating system, sulfamate nickel plating system etc., and wherein, watt type nickel plating system, sulfamate nickel plating system are the preferred system of the present invention.The nickel amount is controlled at 1～20g/m in the electronickelling
2, wherein preferred electric plated with nickel amount is 5～10g/m
2This operation is finished the outermost layer of metal fabric functional layer of the present invention, i.e. the protective treatment of magnetic conduction processing for the second time and fabric.
Compared with prior art, the present invention has following advantages:
(1) in the electromagnetic shielding field, copper is good electric conductor, and relative conductivity is big, and effectiveness is based on reflection loss.Nickel belongs to high-permeability material, and relative permeability is big, and electromagnetic shielding is decayed based on absorption loss.Though the electric conductivity of copper is good, price is also moderate, and is oxidized easily, separately the poor durability of using.The nickel resistance to oxidation have the ability that the better protect surface is not etched, but electrical conductivity is relatively low.In order to improve the combination property of Electromagnetically shielding fabrics, ambrose alloy is mixed use, can reach effectiveness preferably.
The ambrose alloy composition metal fabric that the present invention makes by technique scheme, form the Ni-Cu-Ni metal composite functional layer of magnetic conduction-conduction-magnetic conduction respectively at substrate surface, even be in electromagnetic wave under the low frequency state with the absorption of maximum efficiency, reach best electromagnetic shielding effectiveness.Simultaneously, electroplate, when playing the magnetic conduction function, protect described ambrose alloy composition metal fabric not corroded at outermost metal nickel dam.The total content of metallic nickel is controlled at 5-20g/m in the complex function layer
2The mass ratio of copper and nickel is controlled to be (1.5～3): 1, make ambrose alloy composition metal fabric of the present invention that soft feel not only be arranged, even also have extraordinary electromagnet shield effect for low-frequency electromagnetic wave, the shield effectiveness of wave frequency described metal fabric in 10KHz～3GHz scope the time is at 60～90dB; The shield effectiveness of wave frequency described metal fabric when 10KHz is following is 50～70dB.
(2) base material alligatoring time control is weightless neither changes the physical property of base material cloth in the scope of 5-25%, make metal plating layer and substrate material that good bonding force is arranged again, has very strong washable and wearable ability.
(3) the making electromagnetic shielding provided by the invention method of composition metal fabric, the functional layer bottom is a chemical Ni-plating layer, has avoided adopting in the field in the technical scheme of chemical plating damaging working environment, the healthy drawback of harm operating personnel owing to electroless copper uses formaldehyde in the past;
The specific embodiment
Embodiment
Terylen was distributed in 100g/L, the 60 ℃ of sodium hydroxide solutions alligatoring 3.5 hours, after the activation, entered chemical nickel plating 5g/m in the hypophosphites chemical nickel plating system in sensitization in stannous chloride solution, the palladium chloride solution
2, copper facing 25g/m in the cupric pyrophosphate bath system afterwards
2, electric plated with nickel 5g/m in the watts nickel system again
2Through the prepared nickel-copper of said process-nickel complex function layer metal fabric, the coat of metal and base material adhesion are good, and electromagnet shield effect is 92dB in 10KHz～3GHz scope, is 61dB when 10KHz is following.
Claims (3)
1. ambrose alloy composition metal fabric that is used for the electromagnetic shielding field, at woven dacron or POLYAMIDE FABRIC surface deposition ambrose alloy composition metal as functional coating, the innermost layer that it is characterized in that functional coating is a chemical Ni-plating layer, and the intermediate layer is a copper electroplating layer, and outermost layer is an electroless nickel layer; Total nickel amount is 5-20g/m in the functional coating
2, the mass ratio of copper and nickel is 1.5～3: 1.
2. ambrose alloy composition metal fabric as claimed in claim 1 is characterized in that, the shield effectiveness of wave frequency described metal fabric in 10KHz～3GHz scope the time is at 60～90dB; The shield effectiveness of wave frequency described metal fabric when 10KHz is following is 50～70dB.
3. ambrose alloy composition metal process for making such fabric that is used for the electromagnetic shielding field, it is characterized in that, chemical nickel plating, electro-coppering, three steps in sequence of electronickelling are carried out on woven dacron or POLYAMIDE FABRIC base material, form the Ni-Cu-Ni functional layer on base material, and total deposition of metallic nickel is 5-20g/m
2, the copper of deposition and the mass ratio of nickel are 1.5～3: 1, the nickel amount is controlled at 0.5～8g/m on the chemical nickel plating
2, the nickel amount is controlled at 1～20g/m in the electronickelling
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022831 CN1268803C (en) | 2004-01-13 | 2004-01-13 | Nickel-copper composite metal textile and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022831 CN1268803C (en) | 2004-01-13 | 2004-01-13 | Nickel-copper composite metal textile and preparation method thereof |
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| CN1558017A CN1558017A (en) | 2004-12-29 |
| CN1268803C true CN1268803C (en) | 2006-08-09 |
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| CN 200410022831 Expired - Fee Related CN1268803C (en) | 2004-01-13 | 2004-01-13 | Nickel-copper composite metal textile and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103061114A (en) * | 2013-01-15 | 2013-04-24 | 深圳市新纶科技股份有限公司 | Preparation method of electromagnetic shielding textile |
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| US7297373B2 (en) | 2005-11-18 | 2007-11-20 | Noble Fiber Technologies, Llc | Conductive composites |
| CN102395257A (en) * | 2011-07-22 | 2012-03-28 | 东莞市万丰纳米材料有限公司 | Electromagnetic shielding film and preparation method thereof |
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| CN102427709A (en) * | 2011-09-06 | 2012-04-25 | 东莞市万丰纳米材料有限公司 | Electromagnetic shielding film and preparation method thereof |
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| CN104357816B (en) * | 2014-11-13 | 2018-03-13 | 南通大学 | A kind of preparation method of cupro-nickel conducting fabric |
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| CN109487542B (en) * | 2018-11-19 | 2023-10-24 | 吉林省泰华电子股份有限公司 | Preparation process of copper-nickel plated fiber fabric for electromagnetic shielding |
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| CN113355662A (en) * | 2021-05-27 | 2021-09-07 | 益阳市菲美特新材料有限公司 | Conductive cloth prepared by chemical plating method and preparation method thereof |
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2004
- 2004-01-13 CN CN 200410022831 patent/CN1268803C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061114A (en) * | 2013-01-15 | 2013-04-24 | 深圳市新纶科技股份有限公司 | Preparation method of electromagnetic shielding textile |
| CN103061114B (en) * | 2013-01-15 | 2014-08-20 | 深圳市新纶科技股份有限公司 | Preparation method of electromagnetic shielding textile |
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| Publication number | Publication date |
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| CN1558017A (en) | 2004-12-29 |
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Owner name: HUNAN KE LI YUAN XIN ENERGY COMPANY LIMITED Free format text: FORMER NAME OR ADDRESS: LIYUAN NEW MATERIAL CO LTD, CHANGSHA |
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Address after: No. 6 South Xingsha Road, Changsha economic and Technological Development Zone, Hunan Patentee after: Hunan Corun New Energy Co., Ltd. Address before: No. 6 South Xingsha Road, Changsha economic and Technological Development Zone, Hunan Patentee before: Changsha Liyuan New Material Co., Ltd. |
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Owner name: YIYANG CORUN BATTERY CO., LTD. Free format text: FORMER OWNER: HUNAN CORUN YUANXIN ENERGY SOURCES CO., LTD. Effective date: 20110713 |
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Effective date of registration: 20110713 Address after: 413000 No. 115 Kang Fu Nan Road, hi tech Development Zone, Hunan, Yiyang Patentee after: Yiyang Keliyuan Battery Co., Ltd. Address before: 410100 No. 6 South Xingsha Road, Changsha economic and Technological Development Zone, Hunan, China Patentee before: Hunan Corun New Energy Co., Ltd. |
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Effective date of registration: 20151116 Address after: 410205 No. 348 west slope, Tongzi hi tech Development Zone, Hunan, Changsha Patentee after: Hunan Corun New Energy Co., Ltd. Address before: 413000 No. 115 Kang Fu Nan Road, hi tech Development Zone, Hunan, Yiyang Patentee before: Yiyang Keliyuan Battery Co., Ltd. |
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