CN204230311U - A kind of high-barrier plastic-aluminum packaging film of lithium battery - Google Patents
A kind of high-barrier plastic-aluminum packaging film of lithium battery Download PDFInfo
- Publication number
- CN204230311U CN204230311U CN201420772563.8U CN201420772563U CN204230311U CN 204230311 U CN204230311 U CN 204230311U CN 201420772563 U CN201420772563 U CN 201420772563U CN 204230311 U CN204230311 U CN 204230311U
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- aluminium foil
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- layer
- barrier
- lithium battery
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- 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
- Y02E60/10—Energy storage using batteries
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
A kind of lithium battery plastic-aluminum packaging film adopting aluminium foil one side nanometered disposal technique, be compounded with outer membrane at the outer surface of aluminium foil by adhesive linkage, outer membrane is twin shaft semi-drawing PET polyester film or the coextrusion casting film adopting PET particle, bonding particle, nylon particle three kinds of particles; The aluminium foil being compounded with outer membrane is put into electrolyte and single nano surface process is carried out to the inner surface of aluminium foil, form nano anti-corrosive layer at the inner surface of aluminium foil; Again by extrude be compounded in aluminium foil nano anti-corrosive layer outside be compounded with polypropylene PP internal layer; Make one side chemical treatment become possibility, namely decrease the consumption for the treatment of agent, simultaneously do not change again traditional aluminium foil dry-lamination process, avoid research and development nylon or PET and the composite dry adhesive of aluminium foil crossed through chemical surface treatment and curing process.In one side chemical treating process, during unwinding and rewinding, aluminium foil does not crease easily, and can not produce ripple, does not affect the compound of postorder workshop section.
Description
Technical field
The utility model relates to a kind of packaging film, particularly a kind of high-barrier plastic-aluminum packaging film of lithium battery.
Background technology
The inner surface of the intermediate layer aluminium foil of flexible package lithium cell aluminum-plastic composite membrane needs to prevent high fluidity in lithium battery, by force permeability, strong solubility and severe corrosive electrolyte from destroying the high-strength cementability between aluminium foil and PPa, make it layering, thus greatly reduce the internal and external height barrier of lithium battery packaging film, and nano anti-corrosive process must be done to the aluminium foil surface bonding with PPa phase.
This Project Product monopolizes in Japanese DNP and Showa electrician two company always over 15 years, domestic 100% import, and the technological difficulties of one of them are nano surface chemistry process of aluminium foil.The method that Japan adopts is that aluminium foil is directly put into chemical pretreatment solution, then dries, carries out laminating production lithium battery aluminum-plastic composite membrane respectively more afterwards on aluminium foil two sides.1, the aluminium foil surface nanometered disposal equipment that Japan is advanced can ensure soft state aluminium foil through unreeling, surface treatment, oven dry, rolling whole process in, aluminium foil is substantially injury-free, and rolling is neat.Be unlikely the aluminium foil two sides compound that can have influence on below.This process equipment does not have ready-made buying, even if entrust Japan to order goods, price is also very expensive, and domestic this manufacturing capacity that has been difficult to, this restricts the large reason can domesticized in this project end just over 15 years.2, from the structure of lithium battery flexible packaging film, adopt nylon as outmost surface for many years always, and nylon very easily absorbs water, this moisture is except surface attachment, also very easily form Bound moisture, aluminium foil surface nanometered disposal liquid is water usually solvent, baking oven in processing procedure cannot by moisture particularly Bound moisture oven dry, this moisture part that is bound to is transferred to the lithium battery aluminum-plastic film internal layer that contacts with it for a long time by the PP that directly contacts with electrolyte on the surface, the hydrofluoric acid that hydrolysis produces makes battery inflatable, also will penetrate into the inner surface of aluminum plastic film aluminium foil with organic solvent, corrosive aluminum foil, thus destruction adhesive linkage, make PP layer and aluminium foil layering, this will speed up and blends extraneous air outside lithium battery interior electrolyte and permeate to inside battery, make lithium battery function rapid failure.
Summary of the invention
The technical problems to be solved in the utility model is for the deficiencies in the prior art, proposes the high-barrier plastic-aluminum packaging film of low, the energy-efficient lithium battery of a kind of stable performance, compound cost.
The technical problems to be solved in the utility model is achieved through the following technical solutions; a kind of high-barrier plastic-aluminum packaging film of lithium battery; be characterized in: comprise anticorrosion internal layer and high-barrier skin; described high-barrier skin comprises aluminium foil layer; be compounded with by twin shaft semi-drawing PET polyester film or the outer protective film that adopts the coextrusion casting film of PET particle, bonding particle, nylon particle three kinds of particles to form by adhesive linkage at the outer surface of aluminium foil layer
The high-barrier being compounded with outer protective film is outer by the inner surface formation nano anti-corrosive layer of chemical nanometered disposal at aluminium foil layer;
Described anticorrosion internal layer adopts polypropylene PP material to be compounded in outside the outer field nano anti-corrosive layer of high-barrier by extruding.
The fracture strength of described outer membrane is suitable with biaxial stretch-formed nylon with elongation at break.
Aluminium foil layer thickness is 30 ~ 70 μm, and outer layer protection film thickness is 15 ~ 30 μm, and anticorrosion internal layer thickness is 30 ~ 60 μm.
The thickness of the nano anti-corrosive layer formed at the inner surface of aluminium foil layer is 5 ~ 20nm.
The utility model compared with prior art, first at the outer surface composite skins film of aluminium foil, then carries out chemical treatment to the inner surface of aluminium foil.Adopt twin shaft semi-drawing PET polyester film due to outer membrane or adopt the coextrusion casting film of PET particle, bonding particle, nylon particle three kinds of particles to substitute nylon, one side chemical treatment is made to become possibility, namely the consumption for the treatment of agent is decreased, simultaneously do not change again traditional aluminium foil dry-lamination process, avoid research and development nylon or PET and the composite dry adhesive of aluminium foil crossed through chemical surface treatment and curing process.In one side chemical treating process, during unwinding and rewinding, aluminium foil does not crease easily, and can not produce ripple, does not affect the compound of postorder workshop section.
Accompanying drawing explanation
Fig. 1 is structure diagram of the present utility model.
Embodiment
A kind of high-barrier plastic-aluminum packaging film of lithium battery; comprise anticorrosion internal layer and high-barrier skin; described high-barrier skin comprises aluminium foil layer 3; be compounded with by twin shaft semi-drawing PET polyester film or the outer protective film 1 that adopts the coextrusion casting film of PET particle, bonding particle, nylon particle three kinds of particles to form by adhesive linkage 2 at the outer surface of aluminium foil layer 3
The high-barrier being compounded with outer protective film is outer by the inner surface formation nano anti-corrosive layer 4 of chemical nanometered disposal at aluminium foil layer;
Described anticorrosion internal layer 5 adopts polypropylene PP material to be compounded in outside the outer field nano anti-corrosive layer of high-barrier by extruding.
Described twin shaft semi-drawing PET polyester film take PETG as raw material, adopts extrusion molding to make sheet, then through thin-film material that biaxial tension is made.By reduce vertical and horizontal draw ratio obtain, its redraw elongation improve 50 ~ 100%.
Aluminium foil layer thickness is 30 ~ 70 μm, and outer layer protection film thickness is 15 ~ 30 μm, and anticorrosion internal layer thickness is 30 ~ 60 μm.
The thickness of the nano anti-corrosive layer formed at the inner surface of aluminium foil layer is 5 ~ 20nm.
Chemical treatment is carried out in existing aluminium foil two sides simultaneously, and because aluminium foil is very soft, be directly unreel and rolling in the past, aluminium foil is easily wrinkling, produces ripple, affects postorder compound.Outer surface composite skins film first at aluminium foil in present embodiment, then chemical treatment is carried out to the inner surface of aluminium foil.During such unwinding and rewinding, aluminium foil does not crease easily, and can not produce ripple, does not affect the compound of postorder workshop section.
Adopt twin shaft semi-drawing PET polyester film due to outer membrane or adopt the coextrusion casting film of PET particle, bonding particle, nylon particle three kinds of particles to substitute nylon, making one side chemical treatment become possibility.PET does not absorb moisture, and the moisture after surface treatment is easy to dry, PET stable performance in the electrolytic solution in addition, can wipe clean, can dissolve immediately unlike nylon, destroy outer surface, thus reduce in lithium battery note electrolyte process, meet accident and splash nylon surface and produce apparent waste product.
Namely decrease the consumption for the treatment of agent, do not change again the dry-lamination process of traditional aluminium foil and nylon or aluminium foil and PET simultaneously, avoid composite dry adhesive and the curing process of the aluminium foil researching and developing nylon or PET and cross through chemical surface treatment.
Claims (3)
1. a high-barrier plastic-aluminum packaging film for lithium battery, is characterized in that:
Comprise anticorrosion internal layer and high-barrier skin;
Described high-barrier skin comprises aluminium foil layer, is compounded with by twin shaft semi-drawing PET polyester film or the outer protective film that adopts the coextrusion casting film of PET particle, bonding particle, nylon particle three kinds of particles to form at the outer surface of aluminium foil layer by adhesive linkage;
The high-barrier being compounded with outer protective film is outer by the inner surface formation nano anti-corrosive layer of chemical nanometered disposal at aluminium foil layer;
Described anticorrosion internal layer adopts polypropylene PP material to be compounded in outside the outer field nano anti-corrosive layer of high-barrier by extruding.
2. the high-barrier plastic-aluminum packaging film of lithium battery according to claim 1, is characterized in that: aluminium foil layer thickness is 30 ~ 70 μm, and outer layer protection film thickness is 15 ~ 30 μm, and anticorrosion internal layer thickness is 30 ~ 60 μm.
3. the high-barrier plastic-aluminum packaging film of lithium battery according to claim 1, is characterized in that: the thickness of the nano anti-corrosive layer formed at the inner surface of aluminium foil layer is 5 ~ 20nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772563.8U CN204230311U (en) | 2014-12-10 | 2014-12-10 | A kind of high-barrier plastic-aluminum packaging film of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772563.8U CN204230311U (en) | 2014-12-10 | 2014-12-10 | A kind of high-barrier plastic-aluminum packaging film of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204230311U true CN204230311U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420772563.8U Expired - Fee Related CN204230311U (en) | 2014-12-10 | 2014-12-10 | A kind of high-barrier plastic-aluminum packaging film of lithium battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN204230311U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107416337A (en) * | 2017-07-25 | 2017-12-01 | 奥瑞金包装股份有限公司 | The processing method of Easy tearing lid |
| CN114407465A (en) * | 2022-02-14 | 2022-04-29 | 上海紫江新材料科技股份有限公司 | Polypropylene film for lithium battery aluminum plastic packaging film and preparation method thereof |
-
2014
- 2014-12-10 CN CN201420772563.8U patent/CN204230311U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107416337A (en) * | 2017-07-25 | 2017-12-01 | 奥瑞金包装股份有限公司 | The processing method of Easy tearing lid |
| CN114407465A (en) * | 2022-02-14 | 2022-04-29 | 上海紫江新材料科技股份有限公司 | Polypropylene film for lithium battery aluminum plastic packaging film and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20161210 |