CN2507818Y - Lithium cell soft packing film - Google Patents
Lithium cell soft packing film Download PDFInfo
- Publication number
- CN2507818Y CN2507818Y CN 01263383 CN01263383U CN2507818Y CN 2507818 Y CN2507818 Y CN 2507818Y CN 01263383 CN01263383 CN 01263383 CN 01263383 U CN01263383 U CN 01263383U CN 2507818 Y CN2507818 Y CN 2507818Y
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- China
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- layer
- aluminium lamination
- polyamide polymers
- polyamide polymer
- microns
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- Expired - Lifetime
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Abstract
The utility model relates to a lithium battery soft packaging film which uses an aluminum layer as a basic layer, wherein the outer surface of the aluminum layer is provided with a polyamide polymer layer, the inner surface of the aluminum layer is provided with a polypropylene layer, and the polyamide polymer layer is a polycaproamide layer, or a polyhexamethylene adipamide layer, or a polyhexamethylene sebacamide layer; the polyamide polymer layer can be arranged between the polypropylene layer covered on the inner surface of the aluminum layer and the inner surface of the aluminum layer; and the outer surface of the polyamide polymer layer covered on the outer surface of the aluminum layer is also provided with a polyethylene glycol terephthalate layer. Since the outer layer employs the polyamide polymer layer, the polyamide polymer layer can cause the aluminum layer to be not easy to break through the cold stamping molding. After the cold stamping molding, the utility model can still largely advance or guarantee the waterproof and dampproof capabilities, the sealing property and the insulation, and at the same time, the utility model can also have the electrolyte resistance and the puncturing resistance required by the technology of the domestic lithium battery. The inclusion substance has good effects of pollution resistance heat-sealing capability, puncturing resistance, electrolyte soaking resistance and electrical isolation.
Description
Technical field
The utility model relates to a kind of composite molding flexible packaging film, particularly a kind of lithium battery flexible packaging film that needs high-barrier and the requirement of cold stamping shaped property that is applicable to.
Background technology
With the immediate prior art of the utility model be that the patent No. is the Chinese patent of ZL99212336, it discloses a kind of lithium battery flexible packaging film, it is basal layer with the aluminium lamination, the aluminium lamination outside face is the polyethylene terephthalate layer, on the aluminium lamination inside face, apply one deck low density polyethylene layer again, coat ethene-(methyl) acrylic copolymer layer again on low density polyethylene layer, low density polyethylene layer and ethene-(methyl) acrylic copolymer layer constitutes internal layer jointly.The problem of its existence is: the up-to-date technology of the package of lithium cell requires must be earlier cold stamping shaped to film before packing, thereby improve the apparent property of lithium cell, the tightness of heat-sealing mouth, and the skin of the described flexible packaging film of above-mentioned utility model adopts the polyethylene terephthalate layer, its tensile property is bad, cold stamping is bad, in addition aluminium lamination too thin also be unfavorable for cold stamping shaped.
Summary of the invention
The technical problems to be solved in the utility model is to propose a kind of lithium cell packaging moulding flexible packaging film.It after cold stamping shaped, when still can significantly improve or guarantee waterproof, protection against the tide, leak tightness and insulativity, can also electrolyte resistance and the puncture performance of the technological requirement of homemade lithium cell.
The technical problems to be solved in the utility model is achieved through the following technical solutions, a kind of lithium battery flexible packaging film, it is basal layer with the aluminium lamination, be characterized in: the outside face at aluminium lamination is attached with the polyamide polymers layer, adhering at the inside face of aluminium lamination has polypropylene layer, and described polyamide polymers layer is polycaprolactam layer or poly-adipoyl diamines layer or polyhexamethylene sebacamide layer.
The technical problems to be solved in the utility model can also come further to realize by the following technical programs, the polyamide polymers layer thickness of aluminium lamination outside face is 15～25 microns, the basal layer aluminum layer thickness is 40～60 microns, and the polypropylene layer thickness of aluminium lamination inside face is 35～70 microns.
The technical problems to be solved in the utility model can also come further to realize by the following technical programs, between polypropylene layer that the aluminium lamination inside face adheres to and aluminium lamination inside face, also be attached with the polyamide polymers layer, described polyamide polymers layer is polycaprolactam layer or poly-adipoyl diamines layer or polyhexamethylene sebacamide layer, and its polyamide polymers layer thickness is 15～25 microns.
The technical problems to be solved in the utility model can also come further to realize by the following technical programs, the outside face of the polyamide polymers layer that adheres at the aluminium lamination outside face also is attached with polyethylene terephthalate's layer, and described polyethylene terephthalate's layer thickness is 9～12 microns.
Outer field polyethylene terephthalate's layer and polyamide polymers layer are that dry type is compound, between outer polyamide polymers layer and the aluminium lamination is that dry type is compound, and the polyamide polymers layer of internal layer and polypropylene layer are extruded compound or extruded jointly and be compound on the middle aluminium lamination.The film of said structure by compound good after, divide the specification that is cut to a certain size again, polypropylene layer inwards, first cold punching is pressed into and requires shape, reinstalls the lithium cell and the battery acid of respective shapes, after hot pressing three banding mouths.
Lithium cell packaging moulding flexible packaging film of the present utility model, because skin has adopted the polyamide polymers layer, it can make aluminium lamination be difficult for breaking after cold stamping shaped, the utility model is after cold stamping shaped, when still can significantly improve or guarantee waterproof, protection against the tide, leak tightness and insulativity, can also electrolyte resistance and the puncture performance of the technological requirement of homemade lithium cell.The not only cold stamping shaped property of these structures is good, and intercept water and steam, the air performance is good, inclusion antipollution heat sealability, puncture and electrolyte resistance soak property, electrical insulating property is effective.
Description of drawings
Fig. 1 is first kind of embodiment structural representation of the present utility model.
Fig. 2 is second kind of embodiment structural representation of the present utility model.
Fig. 3 is the third embodiment structural representation of the present utility model.
Fig. 4 is the 4th a kind of embodiment structural representation of the present utility model.
The specific embodiment
Embodiment one, as Fig. 1, and a kind of lithium battery flexible packaging film, it is a basal layer with aluminium lamination 2, is attached with polyamide polymers layer 1 at the outside face of aluminium lamination 2, and adhering at the inside face of aluminium lamination 2 has polypropylene layer 3, and described polyamide polymers layer is the polycaprolactam layer.Its ectomesoderm polyamide polymers layer thickness is 25 microns, and the aluminum interlayer layer thickness is 60 microns, and internal layer polypropylene layer thickness is 70 microns.
Embodiment two, as Fig. 3, in the foregoing description one, also can be and are followed successively by polyamide polymers layer 1, middle aluminium lamination 2, polyamide polymers layer 4, polypropylene layer 3 from outside to inside; Described polyamide polymers is a polyhexamethylene sebacamide.Its ectomesoderm polyamide polymers layer thickness is 25 microns, and the aluminum interlayer layer thickness is 60 microns, and internal layer polyamide polymers layer thickness is 25 microns, and internal layer polypropylene layer thickness is 50 microns.
Embodiment three, as Fig. 2, in the foregoing description, also can be and are followed successively by polyethylene terephthalate's layer 5, polyamide polymers layer 1, middle aluminium lamination 2, polypropylene layer 3 from outside to inside; Described polyamide polymers is poly-adipoyl diamines.Its ectomesoderm polyethylene terephthalate layer thickness is 10 microns, and outer polyamide polymers layer thickness is 20 microns, and the aluminum interlayer layer thickness is 50 microns, and internal layer polypropylene layer thickness is 50 microns.
Embodiment four, and as Fig. 4, in the foregoing description one, it also can be and is followed successively by polyethylene terephthalate's layer 5, polyamide polymers layer 1, middle aluminium lamination 2, polyamide polymers layer 4, polypropylene layer 3 from outside to inside; Described polyamide polymers is a polycaprolactam.Its ectomesoderm polyethylene terephthalate layer thickness is 9 microns, and outer polyamide polymers layer thickness is 15 microns, and the aluminum interlayer layer thickness is 40 microns, and internal layer polyamide polymers layer thickness is 15 microns, and internal layer polypropylene layer thickness is 35 microns.
Claims (4)
1. lithium battery flexible packaging film, it is a basal layer with aluminium lamination (2), it is characterized in that: the outside face at aluminium lamination (2) is attached with polyamide polymers layer (1), adhering at the inside face of aluminium lamination (2) has polypropylene layer (3), and described polyamide polymers layer is polycaprolactam layer or poly-adipoyl diamines layer or polyhexamethylene sebacamide layer.
2. lithium battery flexible packaging film according to claim 1, it is characterized in that: polyamide polymers layer (1) thickness of aluminium lamination (2) outside face is 15～25 microns, basal layer aluminium lamination (2) thickness is 40～60 microns, and polypropylene layer (3) thickness of aluminium lamination (2) inside face is 35～70 microns.
3. lithium battery flexible packaging film according to claim 1, it is characterized in that: between polypropylene layer (3) that aluminium lamination (2) inside face adheres to and aluminium lamination (2) inside face, also be attached with polyamide polymers layer (4), described polyamide polymers layer is polycaprolactam layer or poly-adipoyl diamines layer or polyhexamethylene sebacamide layer, and its polyamide polymers layer thickness is 15～25 microns.
4. lithium battery flexible packaging film according to claim 1, it is characterized in that: the outside face of the polyamide polymers layer (1) that adheres at aluminium lamination (2) outside face also is attached with polyethylene terephthalate's layer (5), and described polyethylene terephthalate's layer (5) thickness is 9～12 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01263383 CN2507818Y (en) | 2001-10-24 | 2001-10-24 | Lithium cell soft packing film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01263383 CN2507818Y (en) | 2001-10-24 | 2001-10-24 | Lithium cell soft packing film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2507818Y true CN2507818Y (en) | 2002-08-28 |
Family
ID=33670978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01263383 Expired - Lifetime CN2507818Y (en) | 2001-10-24 | 2001-10-24 | Lithium cell soft packing film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2507818Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327541C (en) * | 2005-06-22 | 2007-07-18 | 纪柏全 | Packaging structure of alkali battery and packaging method of alkali battery |
-
2001
- 2001-10-24 CN CN 01263383 patent/CN2507818Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327541C (en) * | 2005-06-22 | 2007-07-18 | 纪柏全 | Packaging structure of alkali battery and packaging method of alkali battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111024 Granted publication date: 20020828 |