CN205028959U - Slim resistant plastic -aluminum membrane - Google Patents
Slim resistant plastic -aluminum membrane Download PDFInfo
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- CN205028959U CN205028959U CN201520786512.5U CN201520786512U CN205028959U CN 205028959 U CN205028959 U CN 205028959U CN 201520786512 U CN201520786512 U CN 201520786512U CN 205028959 U CN205028959 U CN 205028959U
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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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Abstract
The utility model discloses a slim resistant plastic -aluminum membrane, including outer protective layer, the aluminium foil layer (AL) of centre and the heat -seal layer of inlayer, close with protective layer and heat -seal stacking respectively through the adhesive on the two sides on aluminium foil layer (AL), the protective layer is polyester layer (PET) and crowds the membrane altogether with nylon layer's (PA) curtain coating, the internal surface of nylon (PA) passes through adhesive dry -type complex with the surface on aluminium foil layer (AL), the heat -seal layer includes polyester layer (PET) and homopolymerization propylene layer (PP), polyester layer (PET) and homopolymerization propylene layer (PP) are compound through the adhesive dry -type, the medial surface on aluminium foil layer (AL) passes through adhesive dry -type complex with the lateral surface on polyester layer (PET). Mode through adopting the curtain coating to crowd altogether combines, does not need other binder layer, has reduced the whole thickness of plastic -aluminum membrane, has also improved the impact resistance and the resistant folding endurance ability of plastic -aluminum membrane simultaneously.
Description
Technical field
The utility model relates to the packaging film technical field of lithium battery, particularly the slim folding aluminum plastic film of one.
Background technology
The development experience of lithium battery three phases, first be the lithium battery of box hat packaging, be the lithium battery of aluminum hull packaging afterwards, and used soft package lithium battery at present, because flexible package lithium cell has the advantages such as capacity is large, lightweight, fail safe is good, become the developing direction of lithium battery.At present; flexible package lithium cell use aluminum plastic film generally by outer field nylon film as protective layer; middle aluminium foil is as insulating barrier; and the cast polypropylene film of internal layer is as hot sealing layer; owing to being all bonded by tack coat between each layer; cause the thickness of the aluminum plastic film obtained thus to increase, be unfavorable for light-duty, the slimming development of lithium battery.Meanwhile, owing to adopting the nylon layer of individual layer to make protective layer, nylon impact strength is little, and folding resistance is poor, is easily corroded by strong acid, is difficult to reach the function as protective layer.
Utility model content
The utility model, for the disappearance of prior art existence, its object is to provide a kind of folding resistance good, the slim folding aluminum plastic film that fail safe is higher.
For reaching above-mentioned purpose, the utility model adopts following technical scheme:
A kind of slim folding aluminum plastic film, comprise the hot sealing layer of outer field protective layer, middle aluminium foil layer (AL) and internal layer, the two sides of described aluminium foil layer (AL) is combined with protective layer and hot sealing layer respectively by adhesive, described protective layer is the curtain coating co-extrusion film of polyester layer (PET) and nylon layer (PA), and the inside of described curtain coating co-extrusion film is formed and mutually fuses the composite bed embedded by polyester layer (PET) and nylon layer (PA); The inner surface of described nylon (PA) and the outer surface of aluminium foil layer (AL) are by adhesive dry type compound; Described hot sealing layer comprises polyester layer (PET) and homo-polypropylene layer (PP), and described polyester layer (PET) and homo-polypropylene layer (PP) are by adhesive dry type compound; The medial surface of described aluminium foil layer (AL) and the lateral surface of polyester layer (PET) are by adhesive dry type compound.
As a kind of preferred version, described curtain coating co-extrusion film thickness is 20 ~ 70 microns; Described aluminium foil layer (AL) thickness is 20 ~ 100 microns; The thickness of described polyester layer (PET) is 15 ~ 40 microns; The thickness of cast polypropylene (PP) is 20 ~ 80 microns.
As a kind of preferred version, the thickness of described composite bed is 3 ~ 10 microns.
The utility model is by adopting technique scheme, compared with prior art there is obvious advantage and beneficial effect, specifically, by adopting the mode of curtain coating co-extrusion to be combined with nylon layer (PA) on polyester layer (PET), form protective layer: 1, make the combination between polyester layer (PET) and nylon layer (PA) more firm, laminating is more even, and its material stress is more even, is of value to drawing and forming; 2, by adopting curtain coating co-extrusion mode, not needing other adhesive layer, reducing the integral thickness of aluminum plastic film, make aluminum plastic film can do very thin after increase polyester layer (PET), very gently, meet the demand for development of lithium battery; 3, make aluminum plastic film obtain higher electrolyte resistance performance, there is higher impact strength and folding quality, make lithium ion battery obtain better protection, ensure that the stable of performance of lithium ion battery.
For more clearly setting forth architectural feature of the present utility model, technological means and the specific purposes reached thereof and function, below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the utility model.
Accompanying drawing identifier declaration:
1, polyester layer (PET) 2, composite bed 3, nylon layer (PA)
4, adhesive 5, aluminium foil layer (AL) 6, homo-polypropylene layer (PP)
Embodiment
As shown in Figure 1; a kind of slim folding aluminum plastic film; comprise the hot sealing layer of outer field protective layer, middle aluminium foil layer (AL) 5 and internal layer; the two sides of described aluminium foil layer (AL) is combined with protective layer and hot sealing layer respectively by adhesive 4; described protective layer is the curtain coating co-extrusion film of polyester layer (PET) 1 and nylon layer (PA) 3, and the inside of described curtain coating co-extrusion film is formed and mutually fuses the composite bed 2 embedded by polyester layer (PET) 1 and nylon layer (PA) 3.The inner surface of described nylon layer (PA) 3 and the outer surface of aluminium foil layer (AL) 5 are by adhesive 4 dry type compound.Described hot sealing layer comprises polyester layer (PET) 1 and homo-polypropylene layer (PP) 6, described polyester layer (PET) 1 and homo-polypropylene layer (PP) 6 are by adhesive 4 dry type compound, and the medial surface of described aluminium foil layer (AL) 5 and the lateral surface of polyester layer (PET) 1 are by adhesive 4 dry type compound.
Described curtain coating co-extrusion film thickness is 20 ~ 70 microns, and the thickness of described composite bed 2 is 3 ~ 10 microns.Described aluminium foil layer (AL) 5 thickness is 20 ~ 100 microns; The thickness of described polyester layer (PET) 1 is 15 ~ 40 microns; The thickness of cast polypropylene (PP) 6 is 20 ~ 80 microns.
In sum, the utility model is by adopting the mode of curtain coating co-extrusion to be combined with nylon layer (PA) 3 on polyester layer (PET) 1, form protective layer: 1, make the combination between polyester layer (PET) 1 and nylon layer (PA) 3 more firm, fit more even, its material stress is more even, is of value to drawing and forming; 2, also make aluminum plastic film obtain higher electrolyte resistance performance, there is higher impact strength and folding quality, make lithium ion battery obtain better protection, ensure that the stable of lithium ion performance; 3, by adopting curtain coating co-extrusion mode, not needing other adhesive layer, reducing the integral thickness of aluminum plastic film, make aluminum plastic film can do very thin after increase polyester layer (PET) 1, very gently, meet the demand for development of lithium battery.
The above, it is only preferred embodiment of the present utility model, not in order to limit the utility model, thus every according to technology of the present utility model actual above embodiment is done any amendment, equivalent replacement, improvement etc., all still belong in the scope of technical solutions of the utility model.
Claims (3)
1. a slim folding aluminum plastic film, comprise the hot sealing layer of outer field protective layer, middle aluminium foil layer (AL) and internal layer, the two sides of described aluminium foil layer (AL) is combined with protective layer and hot sealing layer respectively by adhesive, it is characterized in that: described protective layer is the curtain coating co-extrusion film of polyester layer (PET) and nylon layer (PA), the inside of described curtain coating co-extrusion film is formed and mutually fuses the composite bed embedded by polyester layer (PET) and nylon layer (PA); The inner surface of described nylon (PA) and the outer surface of aluminium foil layer (AL) are by adhesive dry type compound; Described hot sealing layer comprises polyester layer (PET) and homo-polypropylene layer (PP), and described polyester layer (PET) and homo-polypropylene layer (PP) are by adhesive dry type compound; The medial surface of described aluminium foil layer (AL) and the lateral surface of polyester layer (PET) are by adhesive dry type compound.
2. slim folding aluminum plastic film according to claim 1, is characterized in that: described curtain coating co-extrusion film thickness is 20 ~ 70 microns; Described aluminium foil layer (AL) thickness is 20 ~ 100 microns; The thickness of described polyester layer (PET) is 15 ~ 40 microns; The thickness of cast polypropylene (PP) is 20 ~ 80 microns.
3. slim folding aluminum plastic film according to claim 1, is characterized in that: the thickness of described composite bed is 3 ~ 10 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520786512.5U CN205028959U (en) | 2015-10-10 | 2015-10-10 | Slim resistant plastic -aluminum membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520786512.5U CN205028959U (en) | 2015-10-10 | 2015-10-10 | Slim resistant plastic -aluminum membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205028959U true CN205028959U (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520786512.5U Active CN205028959U (en) | 2015-10-10 | 2015-10-10 | Slim resistant plastic -aluminum membrane |
Country Status (1)
| Country | Link |
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| CN (1) | CN205028959U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106541642A (en) * | 2016-10-27 | 2017-03-29 | 明冠新材料股份有限公司 | A kind of integrated-type high-performance aluminum plastic film and preparation method thereof |
| CN106935737A (en) * | 2017-03-22 | 2017-07-07 | 苏州市星辰新材料集团有限公司 | A kind of electrolyte packaging film |
| CN107521064A (en) * | 2017-08-14 | 2017-12-29 | 浙江康骏机械有限公司 | Lithium battery aluminum-plastic composite membrane coextru-lamination preparation method |
| CN109378412A (en) * | 2018-10-22 | 2019-02-22 | 北京环宇东方聚能科技有限公司 | A kind of polymer Li-ion battery and its manufacturing method |
| CN110039853A (en) * | 2019-05-09 | 2019-07-23 | 江苏利特尔绿色包装股份有限公司 | A kind of aluminum plastic film and its preparation process |
| CN110065283A (en) * | 2019-04-02 | 2019-07-30 | 江阴长庚高科技材料有限公司 | Anti- removing lithium battery sealed membrane and preparation method thereof and its aluminum-plastic composite membrane |
| CN112721378A (en) * | 2020-12-16 | 2021-04-30 | 浙江华正能源材料有限公司 | Outer-layer film material for aluminum-plastic composite film and application thereof |
| CN113540623A (en) * | 2020-04-14 | 2021-10-22 | 株式会社Lg化学 | Pouch type battery case and pouch type secondary battery |
-
2015
- 2015-10-10 CN CN201520786512.5U patent/CN205028959U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106541642A (en) * | 2016-10-27 | 2017-03-29 | 明冠新材料股份有限公司 | A kind of integrated-type high-performance aluminum plastic film and preparation method thereof |
| CN106935737A (en) * | 2017-03-22 | 2017-07-07 | 苏州市星辰新材料集团有限公司 | A kind of electrolyte packaging film |
| CN107521064A (en) * | 2017-08-14 | 2017-12-29 | 浙江康骏机械有限公司 | Lithium battery aluminum-plastic composite membrane coextru-lamination preparation method |
| CN107521064B (en) * | 2017-08-14 | 2019-12-13 | 浙江康骏机械有限公司 | co-extrusion compounding preparation method of lithium battery aluminum-plastic composite film |
| CN109378412A (en) * | 2018-10-22 | 2019-02-22 | 北京环宇东方聚能科技有限公司 | A kind of polymer Li-ion battery and its manufacturing method |
| CN110065283A (en) * | 2019-04-02 | 2019-07-30 | 江阴长庚高科技材料有限公司 | Anti- removing lithium battery sealed membrane and preparation method thereof and its aluminum-plastic composite membrane |
| CN110039853A (en) * | 2019-05-09 | 2019-07-23 | 江苏利特尔绿色包装股份有限公司 | A kind of aluminum plastic film and its preparation process |
| CN113540623A (en) * | 2020-04-14 | 2021-10-22 | 株式会社Lg化学 | Pouch type battery case and pouch type secondary battery |
| CN115244767A (en) * | 2020-04-14 | 2022-10-25 | 株式会社Lg新能源 | Pouch type battery case and pouch type secondary battery |
| CN112721378A (en) * | 2020-12-16 | 2021-04-30 | 浙江华正能源材料有限公司 | Outer-layer film material for aluminum-plastic composite film and application thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |