CN104966799B - A kind of multi-functional barrier aluminum plastic film of lithium battery composite packaging - Google Patents
A kind of multi-functional barrier aluminum plastic film of lithium battery composite packaging Download PDFInfo
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- CN104966799B CN104966799B CN201510408453.2A CN201510408453A CN104966799B CN 104966799 B CN104966799 B CN 104966799B CN 201510408453 A CN201510408453 A CN 201510408453A CN 104966799 B CN104966799 B CN 104966799B
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- gluing oxidant
- plastic film
- aluminum plastic
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 239000002985 plastic film Substances 0.000 title claims abstract description 21
- 229920006255 plastic film Polymers 0.000 title claims abstract description 21
- 230000004888 barrier function Effects 0.000 title claims abstract description 19
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 17
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 33
- 239000007800 oxidant agent Substances 0.000 claims abstract description 33
- 230000001590 oxidative effect Effects 0.000 claims abstract description 33
- -1 polypropylene Polymers 0.000 claims abstract description 33
- 239000011347 resin Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000004743 Polypropylene Substances 0.000 claims abstract description 22
- 229920001155 polypropylene Polymers 0.000 claims abstract description 22
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011737 fluorine Substances 0.000 claims abstract description 21
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 21
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 21
- 239000005025 cast polypropylene Substances 0.000 claims abstract description 20
- 238000010521 absorption reaction Methods 0.000 claims abstract description 17
- 239000005030 aluminium foil Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000004677 Nylon Substances 0.000 claims abstract description 10
- 229920001778 nylon Polymers 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 91
- 229920001684 low density polyethylene Polymers 0.000 claims description 12
- 239000004702 low-density polyethylene Substances 0.000 claims description 12
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 8
- 229920001897 terpolymer Polymers 0.000 claims description 8
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 claims description 6
- 229920001519 homopolymer Polymers 0.000 claims description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 5
- 150000001336 alkenes Chemical class 0.000 claims description 5
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 claims description 5
- 229920001903 high density polyethylene Polymers 0.000 claims description 5
- 239000004700 high-density polyethylene Substances 0.000 claims description 5
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 5
- 239000004809 Teflon Substances 0.000 claims description 4
- 229920006362 Teflon® Polymers 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 3
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 3
- 229920001179 medium density polyethylene Polymers 0.000 claims description 3
- 239000004701 medium-density polyethylene Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000012790 adhesive layer Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims 2
- 239000002033 PVDF binder Substances 0.000 claims 1
- 238000007766 curtain coating Methods 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims 1
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 14
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 9
- 229920000642 polymer Polymers 0.000 abstract description 5
- 238000003475 lamination Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- WFLOTYSKFUPZQB-UHFFFAOYSA-N 1,2-difluoroethene Chemical group FC=CF WFLOTYSKFUPZQB-UHFFFAOYSA-N 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 229920001959 vinylidene polymer Polymers 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000007719 peel strength test Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Laminated Bodies (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention relates to a kind of multi-functional barrier aluminum plastic film of lithium battery composite packaging, including poly- fluororesin and non-stretched cast polypropylene resin and polyvinyl resin coextruded layer, first gluing oxidant layer, high water absorption polypropylene layer, second gluing oxidant layer, aluminium foil layer, 3rd gluing oxidant layer, nylon layer, 4th gluing oxidant layer, fluorine film layer, the aluminum plastic film stacks gradually the poly- fluororesin and non-stretched cast polypropylene resin and polyvinyl resin coextruded layer from inside to outside, first gluing oxidant layer, high water absorption polypropylene layer, second gluing oxidant layer, aluminium foil layer, 3rd gluing oxidant layer, nylon layer, 4th gluing oxidant layer, fluorine film layer.The present invention is using multi-layered bonded, lamination complex technique production, processing is simple, with excellent barrier property, heat sealability, ductility and decay resistance, quality requirement of the lithium ion battery to housing material performance can be met, can be widely applied in polymer Li-ion battery packaging.
Description
Technical field
The present invention relates to battery packaging material field, more particularly to a kind of multi-functional barrier plastic-aluminum of lithium battery composite packaging
Film.
Background technology
Polymer Li-ion battery has more light weight, more high-capacitance due to it compared with existing liquid lithium ionic cell
And the features such as service life length and higher security, it has also become the main direction of development of Green Chemistry new energy.
The quality of polymer Li-ion battery is not only in close relations with lithium-ion electrolyte sole mass, and with its outsourcing
Packing quality also has very big correlation.Polymer Li-ion battery housing material need to generally have due to its special quality requirement
The universalities such as excellent heat sealability, barrier property and ductility can meet its lithium ion battery to housing material
It is required that.At present, existing housing material all can not preferably meet quality requirement of the lithium ion battery to housing material, therefore
It is extremely urgent to improve existing lithium ion battery outer cover material.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of multi-functional barrier aluminum plastic film of lithium battery composite packaging, the aluminium
Plastic film has excellent barrier property, heat sealability, ductility and decay resistance, and lithium ion battery can be met to outer packing
The quality requirement of material property, it can be widely applied in polymer Li-ion battery packaging.
The technical scheme is that:A kind of multi-functional barrier aluminum plastic film of lithium battery composite packaging, including poly- fluororesin and
Non-stretched cast polypropylene resin and polyvinyl resin coextruded layer, the first gluing oxidant layer, high water absorption polypropylene layer, the second adhesive
Layer, aluminium foil layer, the 3rd gluing oxidant layer, nylon layer, the 4th gluing oxidant layer, fluorine film layer, the aluminum plastic film stack gradually from inside to outside
The poly- fluororesin and non-stretched cast polypropylene resin and polyvinyl resin coextruded layer, the first gluing oxidant layer, high water absorption poly- third
Alkene layer, the second gluing oxidant layer, aluminium foil layer, the 3rd gluing oxidant layer, nylon layer, the 4th gluing oxidant layer, fluorine film layer.
As a preferred embodiment of the present invention, the poly- fluororesin and non-stretched cast polypropylene resin and polyethylene tree
Fat coextruded layer thickness is 10~50 μm.
As a preferred embodiment of the present invention, the poly- fluororesin and non-stretched cast polypropylene resin and polyethylene tree
Poly- fluororesin in fat coextruded layer is polyvinyl fluoride, Kynoar, polytetrafluoroethylene (PTFE), difluoroethylene homopolymer, tetrafluoroethene,
Hexafluoropropene, the binary of vinylidene or terpolymer, modified polyvinyl fluoride, modified polyvinilidene fluoride, modified polytetrafluoroethyl-ne
One or both of alkene combination of the above.
As a preferred embodiment of the present invention, the poly- fluororesin and non-stretched cast polypropylene resin and polyethylene tree
Polyvinyl resin in fat coextruded layer is LLDPE, low density polyethylene (LDPE), medium density polyethylene, high-density polyethylene
Alkene, very one or both of low density polyethylene (LDPE) combination of the above.
As a preferred embodiment of the present invention, the material of the high water absorption polypropylene layer is polypropylene and high hydroscopic resin
Blended melting co-extrusion is formed, and the thickness of the high water absorption polypropylene layer is 10~100 μm.
As a preferred embodiment of the present invention, content of super water absorbent resin scope is 1% in the high water absorption polypropylene layer
~50%.
As a preferred embodiment of the present invention, the material of the fluorine film layer is polyvinyl fluoride, Kynoar, polytetrafluoro
Ethene, difluoroethylene homopolymer, tetrafluoroethene, hexafluoropropene, the binary of vinylidene or terpolymer, modified poly- fluorine second
One or both of alkene, modified polyvinilidene fluoride, modified Teflon combination of the above;The thickness of the fluorine film layer be 3~
30μm。
As a preferred embodiment of the present invention, the aluminium foil layer thickness is 30~60 μm.
After adopting the above technical scheme, the beneficial effects of the invention are as follows:
First, the Corrosion Protection of hot sealing layer can be effectively improved by adding polyethylene and poly- fluororesin in the present invention in hot sealing layer
And heat sealability;Secondly, increase floor height water suction polypropylene layer in the internal layer of aluminium foil, can effectively prevent that steam enters in natural environment
Enter electrolyte, reduce the probability that electrolyte produces other acidic materials or gas, effectively extend the service life of lithium ion battery.
For the aluminum plastic film using multi-layered bonded, lamination complex technique production, processing is simple, has excellent barrier property, heat sealability, prolongs
Malleability energy and decay resistance, quality requirement of the lithium ion battery to housing material performance can be met, can be widely applied to gather
In compound lithium ion battery packaging.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Wherein, 1 is poly- fluororesin and non-stretched cast polypropylene resin and polyvinyl resin coextruded layer;2 be first gluing
Oxidant layer;3 be high water absorption polypropylene layer;4 be the second gluing oxidant layer;5 be aluminium foil layer;6 be the 3rd gluing oxidant layer;7 be nylon layer;8
For the 4th gluing oxidant layer;9 be fluorine film layer.
Embodiment
In order that objects and advantages of the present invention are more clearly understood, the present invention is carried out with reference to embodiments further
Describe in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
As shown in figure 1, the invention provides a kind of multi-functional barrier aluminum plastic film of lithium battery composite packaging, including poly- fluororesin
And non-stretched cast polypropylene resin and polyvinyl resin coextruded layer 1, the first gluing oxidant layer 2, high water absorption polypropylene layer 3, second
Gluing oxidant layer 4, aluminium foil layer 5, the 3rd gluing oxidant layer 6, nylon layer 7, the 4th gluing oxidant layer 8, fluorine film layer 9, the aluminum plastic film is from interior
To stacking gradually the poly- fluororesin and non-stretched cast polypropylene resin and polyvinyl resin coextruded layer 1, the first adhesive outside
Layer 2, high water absorption polypropylene layer 3, the second gluing oxidant layer 4, aluminium foil layer 5, the 3rd gluing oxidant layer 6, nylon layer 7, the 4th gluing oxidant layer
8th, fluorine film layer 9.
The poly- fluororesin and non-stretched cast polypropylene resin and the thickness of polyvinyl resin coextruded layer 1 are 10~50 μm.
The poly- fluororesin and non-stretched cast polypropylene resin and the poly- fluororesin in polyvinyl resin coextruded layer 1 are poly-
PVF, Kynoar, polytetrafluoroethylene (PTFE), difluoroethylene homopolymer, tetrafluoroethene, hexafluoropropene, the binary of vinylidene
Or one or both of terpolymer, modified polyvinyl fluoride, modified polyvinilidene fluoride, modified Teflon above group
Close.
The poly- fluororesin and non-stretched cast polypropylene resin are with the polyvinyl resin in polyvinyl resin coextruded layer 1
LLDPE, low density polyethylene (LDPE), medium density polyethylene, high density polyethylene (HDPE), very in low density polyethylene (LDPE) one
Kind or two or more combinations.
The material of the high water absorption polypropylene layer 3 is that polypropylene is formed with high hydroscopic resin blended melting co-extrusion, the height
The thickness of water suction polypropylene layer is 10~100 μm.
Content of super water absorbent resin scope is 1%~50%, preferably 5%~20% in the high water absorption polypropylene layer 3.
The material of the fluorine film layer 9 is polyvinyl fluoride, Kynoar, polytetrafluoroethylene (PTFE), difluoroethylene homopolymer, tetrafluoro
Ethene, hexafluoropropene, the binary of vinylidene or terpolymer, modified polyvinyl fluoride, modified polyvinilidene fluoride, modified poly- four
One or both of PVF combination of the above;The thickness of the fluorine film layer 9 is 3~30 μm.
The thickness of aluminium foil layer 5 is 30~60 μm.
The manufacturing technology steps of the present invention are as follows:
1. by poly- fluororesin, non-stretched non-cast polypropylene and polyvinyl resin under certain extrusion condition, co-extrusion is melted,
Form poly- fluororesin and non-stretched cast polypropylene resin and polyvinyl resin co-extrusion thing;
2. polypropylene is mixed into co-extrusion with water-absorbing resin, high water absorption acrylic resin thing is formed;
3. a pair aluminium foil surface is passivated processing;
4. by poly- fluororesin and non-stretched cast polypropylene resin and polyvinyl resin co-extrusion thing, high water absorption acrylic resin
Thing, passivation aluminium foil, nylon and fluorine film are bonded using adhesive, and by above-mentioned lamination order be laminated it is compound, dry, obtain
To aluminum plastic film finished product.
The product of the present invention reaches following index by measure:
1. peel strength test:Electrolyte soaks 85 DEG C, 7 days, and film interlaminar strength is more than or equal to 8N/15mm;
2. permeability resistance is tested:Soaked 14 days in 60 DEG C of water, no layering, weight change is less than 0.05 gram.
A variety of modifications to embodiment will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, originally
Invention is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty
Consistent most wide scope.
Claims (8)
1. a kind of multi-functional barrier aluminum plastic film of lithium battery composite packaging, it is characterised in that including poly- fluororesin and non-stretched curtain coating
Acrylic resin and polyvinyl resin coextruded layer, the first gluing oxidant layer, high water absorption polypropylene layer, the second gluing oxidant layer, aluminium foil layer,
3rd gluing oxidant layer, nylon layer, the 4th gluing oxidant layer, fluorine film layer, the aluminum plastic film stack gradually the poly- fluorine tree from inside to outside
Fat and non-stretched cast polypropylene resin and polyvinyl resin coextruded layer, the first gluing oxidant layer, high water absorption polypropylene layer, the second glue
Adhesive layer, aluminium foil layer, the 3rd gluing oxidant layer, nylon layer, the 4th gluing oxidant layer, fluorine film layer.
2. according to the multi-functional barrier aluminum plastic film of lithium battery composite packaging described in claim 1, it is characterised in that the poly- fluorine
Resin and non-stretched cast polypropylene resin and polyvinyl resin coextruded layer thickness are 10~50 μm.
3. according to the multi-functional barrier aluminum plastic film of lithium battery composite packaging described in claim 2, it is characterised in that the poly- fluorine
Resin and non-stretched cast polypropylene resin and the poly- fluororesin in polyvinyl resin coextruded layer are polyvinyl fluoride;Polyvinylidene fluoride
Alkene;Polytetrafluoroethylene (PTFE);Difluoroethylene homopolymer;The binary or terpolymer of tetrafluoroethene;The binary or ternary of hexafluoropropene
Copolymer;The binary or terpolymer of vinylidene;Modified polyvinyl fluoride;Modified polyvinilidene fluoride;Modified Teflon
One or both of combination of the above.
4. according to the multi-functional barrier aluminum plastic film of lithium battery composite packaging described in claim 2, it is characterised in that the poly- fluorine
Resin and non-stretched cast polypropylene resin and the polyvinyl resin in polyvinyl resin coextruded layer be LLDPE,
Low density polyethylene (LDPE), medium density polyethylene, very high density polyethylene (HDPE), one or both of low density polyethylene (LDPE) combination of the above.
5. according to the multi-functional barrier aluminum plastic film of lithium battery composite packaging described in claim 1, it is characterised in that the high suction
The material of water polypropylene layer is that polypropylene is formed with high hydroscopic resin blended melting co-extrusion, the thickness of the high water absorption polypropylene layer
For 10~100 μm.
6. according to the multi-functional barrier aluminum plastic film of lithium battery composite packaging described in claim 5, it is characterised in that the high suction
Content of super water absorbent resin scope is 1%~50% in water polypropylene layer.
7. according to the multi-functional barrier aluminum plastic film of lithium battery composite packaging described in claim 1, it is characterised in that the fluorine film
The material of layer is polyvinyl fluoride;Kynoar;Polytetrafluoroethylene (PTFE);Difluoroethylene homopolymer;The binary or ternary of tetrafluoroethene
Copolymer;The binary or terpolymer of hexafluoropropene;The binary or terpolymer of vinylidene;Modified polyvinyl fluoride;Change
Property Kynoar;One or both of modified Teflon combination of the above;The thickness of the fluorine film layer is 3~30 μm.
8. according to the multi-functional barrier aluminum plastic film of lithium battery composite packaging described in claim 1, it is characterised in that the aluminium foil
Thickness degree is 30~60 μm.
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CN106129279B (en) * | 2016-08-22 | 2018-09-21 | 江苏华谷新材料有限公司 | Polymer Li-ion battery flexible package internal layer co-extrusion film and preparation method thereof |
CN111540848B (en) * | 2020-05-14 | 2022-11-08 | 华鼎国联四川动力电池有限公司 | Lithium ion battery aluminum plastic film and preparation method thereof |
CN113276526B (en) * | 2021-05-19 | 2023-03-24 | 上海紫江彩印包装有限公司 | One-way water absorption composite membrane and preparation method and application thereof |
CN113442476A (en) * | 2021-06-21 | 2021-09-28 | 天津新兴东方临近空间航天科技有限公司 | Fluororesin helium barrier film multilayer co-extrusion film process with good compatibility |
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 |
CN115020878A (en) * | 2022-06-07 | 2022-09-06 | 江苏锦尚新材料有限公司 | Lithium battery aluminum plastic film with moisture absorbing and removing function |
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