CN206344524U - The lithium battery flexible packaging film of surface corrosion-resistant erosion - Google Patents
The lithium battery flexible packaging film of surface corrosion-resistant erosion Download PDFInfo
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- CN206344524U CN206344524U CN201620962229.8U CN201620962229U CN206344524U CN 206344524 U CN206344524 U CN 206344524U CN 201620962229 U CN201620962229 U CN 201620962229U CN 206344524 U CN206344524 U CN 206344524U
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- aluminium foil
- lithium battery
- barrier layer
- polypropylene
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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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides the lithium battery flexible packaging film that a kind of surface corrosion-resistant loses, it is characterised in that including：Fluoroplastic layer, aluminium foil barrier layer and polypropylene thermal sealing, described fluoroplastic layer are located at the outside of aluminium foil barrier layer, and polypropylene thermal sealing is located at the inner side of aluminium foil barrier layer.The utility model has good heat resistance and chemical resistance, prevent electrolytic corrosion from destroying aluminum plastic film top layer or even aluminum plastic film aluminium foil barrier layer, and possess higher barrier property, it is ensured that and the barrier of composite membrane, it is safer using the lithium battery of Soft Roll film.
Description
Technical field
The utility model is related to a kind of composite soft packaging film, particularly a kind of lithium battery Soft Roll of surface electrolyte resistance pollution
Fill film.
Background technology
Conventional lithium battery pack package material mainly has metal, aluminum plastic film.Relative to mental package, aluminum plastic film provides one kind
Light, inexpensive manner of packing, but higher requirement is also proposed to material.Aluminum plastic film common at present typically uses nylon
(PA) as top layer, but nylon (PA) runs into the electrolyte that lithium battery uses and is easily corroded also without barrier effect, therefore
Once aluminum plastic film surface touches electrolyte, hickie will be formed, the outward appearance of lithium battery is not only influenceed, serious be able to may also ooze
The aluminium foil of saturating corrosion barrier, influences the barrier property of aluminum plastic film, causes content seepage or even blast.
The content of the invention
The purpose of this utility model is to provide a kind of lithium battery flexible packaging film of surface electrolyte resistance pollution.
To realize object above, the technical solution of the utility model is：
A kind of lithium battery flexible packaging film of surface corrosion-resistant erosion, it is characterised in that including：Fluoroplastic layer, aluminium foil barrier layer and
Polypropylene thermal sealing, described fluoroplastic layer is located at the outside of aluminium foil barrier layer, and polypropylene thermal sealing is located at aluminium foil barrier layer
Inner side.
Preferably, it is be bonded by adhesive between described fluoroplastic layer and aluminium foil barrier layer.
Preferably, it is be bonded by adhesive between described aluminium foil barrier layer and polypropylene thermal sealing.
Preferably, provided with extrusion polypropylene layer, aluminium foil barrier layer between described aluminium foil barrier layer and polypropylene thermal sealing
It is combined with each other between polypropylene thermal sealing by extruding polypropylene layer.
Preferably, the thickness of described fluoroplastic layer is 12-32 μm, and the thickness of aluminium foil barrier layer is 25-60 μm, polypropylene
The thickness of hot sealing layer is 20-80 μm.
Preferably, the thickness of the lithium battery flexible packaging film of described surface corrosion-resistant erosion is at 55-178 μm.
Preferably, the thickness of described adhesive is 3-5 μm.
Compared with prior art, the beneficial effects of the utility model are：
1st, packaging film of the present utility model has good heat resistance and chemical resistance, prevents electrolytic corrosion from breaking
Bad aluminum plastic film top layer or even aluminum plastic film aluminium foil barrier layer, and possess higher barrier property, it is ensured that the barrier of composite membrane,
It is safer using the lithium battery of Soft Roll film.
2nd, packaging film of the present utility model is adapted to cold stamping shaped.
Brief description of the drawings
The lithium battery flexible packaging film schematic diagram that Fig. 1 loses for the surface corrosion-resistant in embodiment 1.
The lithium battery flexible packaging film schematic diagram that Fig. 2 loses for the surface corrosion-resistant in embodiment 2.
Embodiment
With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation scope of the present utility model.In addition, it is to be understood that reading the content of the utility model instruction
Afterwards, those skilled in the art can make various changes or modifications to the utility model, and these equivalent form of values equally fall within this Shen
Please appended claims limited range.
Embodiment 1
As shown in figure 1, the lithium battery flexible packaging film schematic diagram lost for surface corrosion-resistant, the lithium battery that described surface corrosion-resistant loses
Flexible packaging film includes fluoroplastic layer 1, aluminium foil barrier layer 2 and polypropylene thermal sealing 3, and described fluoroplastic layer 1 is obstructed located at aluminium foil
The outside of layer 2, polypropylene thermal sealing 3 is located at the inner side of aluminium foil barrier layer 2, and glue is passed through between fluoroplastic layer 1 and aluminium foil barrier layer 2
Glutinous agent 4 is bonded.It is be bonded by adhesive 4 between described aluminium foil barrier layer 2 and polypropylene thermal sealing 3.
Described fluoroplastic layer 1 is from polytrifluorochloroethylene (PCTFE) film that the thickness of Honeywell is 19 microns, aluminium foil
Barrier layer 2 is from the soft aluminium foil of O states of the alloy model 8,079 45 microns thick of Japanese Japan Aluminum, polypropylene thermal sealing 3
From 45 microns of three-layer co-extruded polypropylene films of thick self-control, commercially available polypropylene film can be also used, adhesive 4 selects Henkel
Two-component polyurethane adhesive stick agent UK3640 and UK6800, coating weight is 5 grams every square metre.
The preparation method of the lithium battery flexible packaging film of above-mentioned surface corrosion-resistant erosion is：
Step 1：Fluoroplastic layer 1 is Nian Jie with the glutinous agent of two-component polyurethane adhesive using dry type composite algorithm with aluminium foil barrier layer 2
Semi-finished product film is made, the proportioning that two-component polyurethane adhesive sticks agent is UK3640 (admittedly containing 60%):UK6800 (solid content 100%):
Ethyl acetate=25:0.5:18, adhesive working concentration 35.6%.
Step 2：Make the making of three-layer co-extruded polypropylene film by oneself：
With maleic anhydride inoculated polypropylene resin (Mitsui chemistry QE840) be internal layer, HOPP resin (in
The HP510M of seashell board) it is intermediate layer, block copolymerization polypropylene (Saudi Basic Industries Corporation PP673K) and polypropylene elastomer
(Exxon Mobil 3000) weight compares 1：It is outer layer after 1 mixing, interior, middle, outer threeply degree ratio is 1：4：1, screw rod processing temperature
Spend for 240 DEG C to 255 DEG C, film mouthful temperature is 230 DEG C to 245 DEG C, prolong that thickness is fabricated on co-extrusion machine is 45um's in three laminar flows
Three-layer co-extruded polypropylene film, is used as polypropylene thermal sealing 3.
Step 3：Semi-finished product film and internal layer polypropylene thermal sealing 3 homemade 45 microns thick are used using dry type composite algorithm
The two-component polyurethane adhesive stated sticks agent bonding finished product film, and two-component polyurethane adhesive sticks agent proportioning UK3640 (solid contents
60%):UK6800 (solid content 100%):Ethyl acetate=25:0.5:18, adhesive working concentration 35.6%.
Obtained finished product is produced, and (solvent is that volume ratio is 1 to configuration 1mol/L LiPF6 electrolyte：1：1 carbonic acid two
Methyl esters, ethyl carbonate and diethyl carbonate), 5ml electrolyte is dripped in the face of fluoroplastic layer 1,24 are placed in 45 DEG C of baking oven
After hour, electrolyte is wiped, the face of fluoroplastic layer 1 is intact, does not dissolve and corrodes, also without color change.
Embodiment 2
As shown in Fig. 2 the lithium battery flexible packaging film schematic diagram lost for surface corrosion-resistant, the lithium battery that described surface corrosion-resistant loses
Flexible packaging film includes fluoroplastic layer 1, aluminium foil barrier layer 2 and polypropylene thermal sealing 3, and described fluoroplastic layer 1 is obstructed located at aluminium foil
The outside of layer 2, polypropylene thermal sealing 3 is located at the inner side of aluminium foil barrier layer 2, and glue is passed through between fluoroplastic layer 1 and aluminium foil barrier layer 2
Glutinous agent 4 is bonded.Between described aluminium foil barrier layer 2 and polypropylene thermal sealing 3 provided with extrusion polypropylene layer 5, aluminium foil barrier layer 2 with
It is combined with each other between polypropylene thermal sealing 3 by extruding polypropylene layer 5.
Fluoroplastic layer 1 selects 19 microns of Honeywell thick polytrifluorochloroethylene (PCTFE), and aluminium foil barrier layer 2 selects day
The soft aluminium foil of O states of 45 microns of alloy models 8079 of this Japan Aluminum, polypropylene thermal sealing 3 is from 35 microns of thick self-controls
Co-extrusion polypropylene film, adhesive 4 sticks agent UK3640/UK6800 from the two-component polyurethane adhesive of Henkel, and coating weight is 5 grams every
Square metre, extrusion polypropylene layer 5 uses maleic anhydride inoculated polypropylene resin (Mitsui chemistry that can be with bonding foil
QF551), thickness is 10 microns.
The manufacture method of the lithium battery flexible packaging film of described surface corrosion-resistant erosion, comprises the following steps：
Step 1：Fluoroplastic layer 1 and aluminium foil barrier layer 2 are sticked into agent with two-component polyurethane adhesive using dry type composite algorithm to be bonded
Semi-finished product film is made, two-component polyurethane adhesive sticks agent proportioning UK3640 (admittedly containing 60%):UK6800 (solid content 100%):Acetic acid
Ethyl ester=25:0.5:18, adhesive working concentration 35.6%.
Step 2：Make the making of three-layer co-extruded polypropylene film by oneself：
With block copolymerization polypropylene (Saudi Basic Industries Corporation PP673K) and polypropylene elastomer (Exxon Mobil
3000) weight compares 1：It is that internal layer, HOPP resin (HP510M of CSPC) are intermediate layer, block copolymerization after 1 mixing
Polypropylene (Saudi Basic Industries Corporation PP673K) compares 1 with polypropylene elastomer (Exxon Mobil 3000) weight：It is after 1 mixing
Outer layer, interior, middle, outer threeply degree ratio is 1：4：1, screw rod processing temperature DEG C is 240 DEG C to 255 DEG C, film mouthful temperature be 230 DEG C extremely
245 DEG C, prolong in three laminar flows and the polypropylene film that thickness is 35um is fabricated on co-extrusion machine, be used as polypropylene thermal sealing 3.
Step 3：By semi-finished product film and maleic anhydride inoculated polypropylene resin (the Mitsui chemistry of polypropylene thermal sealing 3
QF551) using the compound finished product film of composite algorithm progress is extruded, maleic anhydride inoculated polypropylene resin is located at semi-finished product film with gathering
Between propylene hot sealing layer 3, thickness is 10 microns.
Obtained finished product is produced, and (solvent is that volume ratio is 1 to configuration 1mol/L LiPF6 electrolyte：1：1 carbonic acid two
Methyl esters, ethyl carbonate and diethyl carbonate), 5ml electrolyte is dripped in the face of fluoroplastic layer 1,24 are placed in 45 DEG C of baking oven
After hour, electrolyte is wiped, the face of fluoroplastic layer 1 is intact, does not dissolve and corrodes, also without color change.
Claims (5)
1. a kind of lithium battery flexible packaging film of surface corrosion-resistant erosion, it is characterised in that including：Fluoroplastic layer (1), aluminium foil barrier layer
(2) and polypropylene thermal sealing (3), described fluoroplastic layer (1) is located at the outside of aluminium foil barrier layer (2), polypropylene thermal sealing (3)
Inner side located at aluminium foil barrier layer (2)；By extruding polypropylene between the aluminium foil barrier layer (2) and polypropylene thermal sealing (3)
Layer (5) is combined with each other；Described polypropylene thermal sealing (3) uses three-layer co-extruded polypropylene film.
2. the lithium battery flexible packaging film of surface corrosion-resistant erosion as claimed in claim 1, it is characterised in that described fluoroplastic layer
(1) it is Nian Jie by adhesive (4) between aluminium foil barrier layer (2).
3. the lithium battery flexible packaging film of surface corrosion-resistant erosion as claimed in claim 2, it is characterised in that described adhesive (4)
Thickness be 3-5 μm.
4. the lithium battery flexible packaging film of surface corrosion-resistant erosion as claimed in claim 1, it is characterised in that described fluoroplastic layer
(1) thickness is 12-32 μm, and the thickness of aluminium foil barrier layer (2) is 25-60 μm, and the thickness of polypropylene thermal sealing (3) is 20-80 μ
m。
5. the lithium battery flexible packaging film of surface corrosion-resistant erosion as claimed in claim 1, it is characterised in that described surface corrosion-resistant erosion
Lithium battery flexible packaging film thickness at 55-178 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620962229.8U CN206344524U (en) | 2016-08-26 | 2016-08-26 | The lithium battery flexible packaging film of surface corrosion-resistant erosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620962229.8U CN206344524U (en) | 2016-08-26 | 2016-08-26 | The lithium battery flexible packaging film of surface corrosion-resistant erosion |
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| Publication Number | Publication Date |
|---|---|
| CN206344524U true CN206344524U (en) | 2017-07-21 |
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| CN201620962229.8U Active CN206344524U (en) | 2016-08-26 | 2016-08-26 | The lithium battery flexible packaging film of surface corrosion-resistant erosion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497664A (en) * | 2018-05-18 | 2019-11-26 | 上海恩捷新材料科技股份有限公司 | A kind of aluminium plastic composite packaging film and preparation method thereof |
-
2016
- 2016-08-26 CN CN201620962229.8U patent/CN206344524U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497664A (en) * | 2018-05-18 | 2019-11-26 | 上海恩捷新材料科技股份有限公司 | A kind of aluminium plastic composite packaging film and preparation method thereof |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201108 Shanghai city Minhang District Zhuan Hing Road No. 889 Building 1 Patentee after: Shanghai Zijiang new materials Polytron Technologies Inc Address before: 201108 Shanghai city Minhang District Zhuan Hing Road No. 889 Building 1 Patentee before: Shanghai Ziteng Packaging Material Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |