CN202996915U - Lithium battery flexible packaging film - Google Patents
Lithium battery flexible packaging film Download PDFInfo
- Publication number
- CN202996915U CN202996915U CN2012206391541U CN201220639154U CN202996915U CN 202996915 U CN202996915 U CN 202996915U CN 2012206391541 U CN2012206391541 U CN 2012206391541U CN 201220639154 U CN201220639154 U CN 201220639154U CN 202996915 U CN202996915 U CN 202996915U
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- resin film
- film layer
- lithium battery
- flexible packaging
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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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- Laminated Bodies (AREA)
Abstract
The utility model relates to a flexible packaging film, in particular to a lithium battery flexible packaging film which is resistant to electrolyte pollution. The lithium battery flexible packaging film is sequentially provided with a heat-resisting resin film layer, an aluminum foil layer and a thermoplastic resin film layer from outside to inside. The aluminum foil layer is respectively connected with the heat-resisting resin film layer and the thermoplastic resin film layer in a bonding mode. A corrosion resistant coating is further arranged on the inner side of the thermoplastic resin film layer. A protection layer is formed on the inner side surface of the thermoplastic resin film layer by the corrosion resistant coating, electrolyte can be prevented from permeating the thermoplastic resin film layer and corroding binding agents after, and bonding stability of the corrosion resistant coating is improved.
Description
Technical field
The utility model relates to a kind of flexible packaging film, the lithium battery flexible packaging film that espespecially a kind of electrolyte resistance pollutes.
Background technology
A kind of application number disclosed in the prior art be 200410058323.2, name is called the patent of " packaging material for battery case and with the battery case of its shaping ".It discloses a kind of lithium battery flexible packaging film, have skin, the aluminium foil sandwich layer that is formed by the heat-resistant resin film and the internal layer that is formed by the thermoplastic resin membrane, aluminium foil sandwich layer and internal layer are bonding as the adhesive composition of essential component in order to polyene footpath polyalcohol and polyfunctional isocyanate's curing agent.the main component of the adhesive that above-mentioned packaging material use is with polyene footpath polyalcohol and polyfunctional isocyanate's curing agent, these two kinds of materials that composition is pure dissolubility or ester dissolubility, because thermoplastic resin film layer has certain dialysis, after long-term the use, its barrier property descends, the electrolyte of inside battery can see through thermoplastic resin film layer and little by little etch to the surface of aluminium foil sandwich layer, easily cause aluminium foil sandwich layer swelling and be partly dissolved the binding agent of dry type compound use, cause the adhesive strength of thermoplastic resin film layer and aluminium foil sandwich layer As time goes on and gradually to descend, cause packing of product layer to connect unstable, easily come off between each layer.
Summary of the invention
For addressing the above problem, the utility model provides a kind of lithium battery flexible packaging film of electrolyte resistance pollution.
For reaching above purpose, the utility model mainly by the following technical solutions:
A kind of lithium battery flexible packaging film, it is provided with heat-resistant resin film layer, aluminium foil sandwich layer and thermoplastic resin film layer from outside to inside successively, the aluminium foil sandwich layer is connected with heat-resistant resin film layer and thermoplastic resin film layer viscosity respectively, also is provided with one deck corrosion-resistant coating in the inboard of thermoplastic resin film layer.
A nearlyer step, be provided with one deck corrosion-resistant coating at inner surface and/or the outer surface of described aluminium foil sandwich layer.
A nearlyer step, be provided with one deck corrosion-resistant coating at the outer surface of described heat-resistant resin film layer.
A nearlyer step, the thickness of described aluminium foil sandwich layer is 26 microns.
A nearlyer step, described heat-resistant resin thin layer is the polyamide film layer.
A nearlyer step, described aluminium foil sandwich layer is soft aluminium foil.
A nearlyer step, described thermoplastic resin film layer is cast polypropylene film or co-extrusion polypropylene film.
In the detailed structure in a nearlyer step, described corrosion-resistant coating is fluorinated polyethylene resin, Tissuemat E, fluorinated polypropylene resin, polypropylene wax, polyorganosiloxane resin, the uncommon resin of acrylic acid, atoleine, mylar, oleamide, erucyl amide or fatty acid ester.
The beneficial effects of the utility model are: be provided with one deck corrosion-resistant coating in the inboard of thermoplastic resin film layer; this corrosion-resistant coating adopts the modes such as dip-coating, spraying, intaglio plate coating, Electrostatic Absorption or three rollers reverse coating to be coated with; inner surface at thermoplastic resin film layer forms layer protective layer; can avoid electrolyte to see through thermoplastic resin film layer and aluminium foil sandwich layer and adhesive are caused corrosion, improve its bonding stability.
Description of drawings
Fig. 1 is the structural representation of the utility model lithium battery flexible packaging film.
Embodiment
As shown in Figure 1, a kind of lithium battery flexible packaging film, it is provided with heat-resistant resin film layer 1, aluminium foil sandwich layer 3 and thermoplastic resin film layer 5 from outside to inside successively, aluminium foil sandwich layer 3 is connected with heat-resistant resin film layer 1 and thermoplastic resin film layer 5 viscosity respectively, also is provided with one deck corrosion-resistant coating 4 in the inboard of thermoplastic resin film layer 5.By one deck corrosion-resistant coating 4 in the setting of the inboard of thermoplastic resin film layer 5; this corrosion-resistant coating 4 adopts the modes such as dip-coating, spraying, intaglio plate coating, Electrostatic Absorption or three rollers reverse coating to be coated with; inner surface at thermoplastic resin film layer 5 forms layer protective layer; can avoid electrolyte to see through thermoplastic resin film layer 5 and aluminium foil sandwich layer 3 and adhesive 2 are caused corrosion, having improved its bonding stability.
Inner surface and/or outer surface at described aluminium foil sandwich layer 3 are provided with one deck corrosion-resistant coating 4, preferably the both side surface at aluminium foil sandwich layer 3 all is provided with one deck corrosion-resistant coating 4, can prevent that by this kind mode electrolyte from causing corrosion to aluminium foil sandwich layer 3 and aluminium foil sandwich layer 3 another side adhesives 2, plays the effect of secondary protection.
Outer surface at described heat-resistant resin film layer 1 is provided with one deck corrosion-resistant coating 4.Form layer protective layer by this corrosion-resistant coating 4 at the outer surface of heat-resistant resin film layer 1, dissolving and corrosion occur in the time of can avoiding electrolyte directly to touch Thermal Resistant Surface resin thin film layer 1.
The thickness of described aluminium foil sandwich layer 3 is 26 microns.
The main material of described heat-resistant resin thin layer 1 is polyamide.Polyamide has good thermal endurance, and its heat resisting temperature will be higher than 200 degree, and it also has good mar proof and chemical proofing simultaneously, can play to each layer of inboard effective protective action.
Described aluminium foil sandwich layer 3 is soft aluminium foil.
Described thermoplastic resin film layer 5 is cast polypropylene film or co-extrusion polypropylene film.
Described corrosion-resistant coating 4 is fluorinated polyethylene resin, Tissuemat E, fluorinated polypropylene resin, polypropylene wax, polyorganosiloxane resin, the uncommon resin of acrylic acid, atoleine, mylar, oleamide, erucyl amide or fatty acid ester.
Its manufacturing process is: first the both side surface at aluminium foil sandwich layer 3 respectively is coated with one deck corrosion-resistant coating 4, the thickness of aluminium foil sandwich layer 3 is 26 microns, then respectively be coated with one deck corrosion-resistant coating 4 at a side surface of heat-resistant resin film layer 1 and thermoplastic resin film layer 5 respectively, opposite side surface and the aluminium foil sandwich layer 3 of heat-resistant resin film layer 1 is compound by adhesive 2 dry types, and the side surface and the aluminium foil sandwich layer 3 that at last thermoplastic resin film layer 5 are coated with corrosion-resistant coating 4 are compound by adhesive 2 dry types.
The above execution mode, it is better embodiment of the present utility model, be not to limit the utility model practical range, therefore all equivalences of doing according to the described structure of the utility model claim, feature and principle change or modify, and all should be included in the utility model patent claim.
Claims (8)
1. lithium battery flexible packaging film, it is provided with heat-resistant resin film layer, aluminium foil sandwich layer and thermoplastic resin film layer from outside to inside successively, the aluminium foil sandwich layer is connected with heat-resistant resin film layer and thermoplastic resin film layer viscosity respectively, it is characterized in that, also be provided with one deck corrosion-resistant coating in the inboard of thermoplastic resin film layer.
2. lithium battery flexible packaging film according to claim 1, is characterized in that, is provided with one deck corrosion-resistant coating at inner surface and/or the outer surface of described aluminium foil sandwich layer.
3. lithium battery flexible packaging film according to claim 1, is characterized in that, is provided with one deck corrosion-resistant coating at the outer surface of described heat-resistant resin film layer.
4. lithium battery flexible packaging film according to claim 1, is characterized in that, the thickness of described aluminium foil sandwich layer is 26 microns.
5. lithium battery flexible packaging film according to claim 1, is characterized in that, described heat-resistant resin thin layer is the polyamide film layer.
6. lithium battery flexible packaging film according to claim 1, is characterized in that, described aluminium foil sandwich layer is soft aluminium foil.
7. lithium battery flexible packaging film according to claim 1, is characterized in that, described thermoplastic resin film layer is cast polypropylene film or co-extrusion polypropylene film.
8. according to claim 1 ~ 3 described any one lithium battery flexible packaging films, it is characterized in that, described corrosion-resistant coating is fluorinated polyethylene resin, Tissuemat E, fluorinated polypropylene resin, polypropylene wax, polyorganosiloxane resin, the uncommon resin of acrylic acid, atoleine, mylar, oleamide, erucyl amide or fatty acid ester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206391541U CN202996915U (en) | 2012-11-28 | 2012-11-28 | Lithium battery flexible packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206391541U CN202996915U (en) | 2012-11-28 | 2012-11-28 | Lithium battery flexible packaging film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202996915U true CN202996915U (en) | 2013-06-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206391541U Expired - Lifetime CN202996915U (en) | 2012-11-28 | 2012-11-28 | Lithium battery flexible packaging film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202996915U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782880A (en) * | 2020-06-05 | 2021-12-10 | 上海紫江新材料科技股份有限公司 | Corrosion-resistant lithium battery aluminum plastic film and preparation method thereof |
-
2012
- 2012-11-28 CN CN2012206391541U patent/CN202996915U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782880A (en) * | 2020-06-05 | 2021-12-10 | 上海紫江新材料科技股份有限公司 | Corrosion-resistant lithium battery aluminum plastic 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 | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 410600 No. 020 Jinshui West Road, Ningxiang High-tech Industrial Park, Changsha City, Hunan Province Patentee after: HUNAN XINNENG NEW MATERIAL CO.,LTD. Address before: 523770 Dongguan Xincun Community, Wanjiang District, Dongguan City, Guangdong Province, Old Ningji Industrial Zone, Dongguan Xinneng New Materials Co., Ltd. Patentee before: DONGGUAN XINNENG NEW MATERIALS Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |