CN204547234U - A kind of high buffering lithium battery plastic-aluminum packaging film - Google Patents
A kind of high buffering lithium battery plastic-aluminum packaging film Download PDFInfo
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- CN204547234U CN204547234U CN201520093983.8U CN201520093983U CN204547234U CN 204547234 U CN204547234 U CN 204547234U CN 201520093983 U CN201520093983 U CN 201520093983U CN 204547234 U CN204547234 U CN 204547234U
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Abstract
The utility model discloses a kind of high buffering lithium battery plastic-aluminum packaging film; described lithium battery plastic-aluminum packaging film has layer structure; comprise outer diaphragm, adhesive layer, aluminium foil, adhesive layer, enhancing film, adhesive layer, foam films and heat-sealing film from top to bottom successively; wherein said foam films is polyethylene low ratio foamed film; described outer diaphragm is PA casting films or PET casting films; described heat-sealing film is CPP film; described adhesive layer is a kind of in polyurethane adhesive, epoxyn, acrylic resin adhesive, and described enhancing film is the one in PP, PA, PE, PET.The utility model has added enhancing film and polyethylene low ratio foamed film successively by the inboard of the aluminium foil in lithium battery plastic-aluminum packaging film, wherein polyethylene low ratio foamed film improves the buffer capacity of plastic-aluminum packaging film effectively, strengthen film to improve aluminium foil in plastic-aluminum packaging film and to be hit the intensity threshold of distortion, thus substantially increase safety in utilization and the service life of lithium battery plastic-aluminum packaging film.
Description
Technical field
The utility model relates to a kind of lithium battery manufactured materials, is specifically related to a kind of high buffering lithium battery plastic-aluminum packaging film.
Background technology
Up to now, lithium battery is widely used in all kinds of small size digital product with high-energy-density, superior high and low temperature environment adaptive capacity.Its packaging adopted is replaced by soft plastic-aluminum packaging film external packing gradually from the hard box hat of low and middle-end, aluminum hull.Plastic-aluminum packaging film has pliability as the outer packaging bag of lithium battery, can discharge the supercharging that lithium battery in use surprisingly discharges gas generation, prevent battery explosion.This film material usually has the aluminium foil of high water vapor rejection and has excellent in chemical resistance, heat sealability and flexible plastic foil and be composited.
Although lithium battery encapsulation plastic-aluminum packaging film has higher chemical resistance, every wet, oxygen barrier, encapsulation cohesive force and can be explosion-proof, but wherein lithium battery encapsulation plastic-aluminum packaging film just easily makes the aluminium foil layer in plastic-aluminum packaging film produce micro-crack once produce bubbling after long-term use, and then causes the leakage of the interior liquid of inner packing even to cause blast.
In addition, lithium battery encapsulation plastic-aluminum packaging film, when being molded into lithium battery encapsulation outer bag, needs the active force born from the inside to the outside, also easily makes aluminium foil layer in plastic-aluminum packaging film produce folding line, affect the sealing of plastic-aluminum packaging film in this process.
Utility model content
The purpose of this utility model is to overcome the defect existed in prior art, provides a kind of high buffering lithium battery plastic-aluminum packaging film, improves lithium battery plastic-aluminum packaging film and suppress to produce the ability of bubbling, improve the sealing of plastic-aluminum packaging film.
For achieving the above object, the technical solution of the utility model is a kind of high buffering lithium battery plastic-aluminum packaging film of design, described lithium battery plastic-aluminum packaging film has layer structure, comprise outer diaphragm successively from top to bottom, adhesive layer, aluminium foil, adhesive layer, strengthen film, adhesive layer, foam films and heat-sealing film, wherein said foam films is polyethylene low ratio foamed film, described outer diaphragm is PA casting films or PET casting films, described heat-sealing film is CPP film, described adhesive layer is polyurethane adhesive, epoxyn, a kind of in acrylic resin adhesive, described enhancing film is PP, PA, PE, one in PET.
In order to improve the sealing of lithium battery plastic-aluminum packaging film, further preferably, described enhancing film is the one in BOPP film, BOPA, BOPET film.For improving plunger bond strength, still more preferably, described enhancing film is BOPP film.
In order to improve interlayer adhesion, improving the sealing of lithium battery plastic-aluminum packaging film, preferably, being also provided with adhesive layer between described foam films and described heat-sealing film, being bonded together by adhesive layer.
On thickness; preferably; the thickness of described heat-sealing film is 30 ~ 50 microns; the thickness of described foam films is 5 ~ 30 microns; the thickness of described enhancing film is 5 ~ 15 microns; the thickness of described aluminium foil is 25 ~ 50 microns, and the thickness of described outer diaphragm is 20 ~ 40 microns, and the thickness of each described adhesive layer is 2 ~ 6 microns.
Advantage of the present utility model and beneficial effect are: the utility model has added enhancing film and polyethylene low ratio foamed film successively by the inboard of the aluminium foil in lithium battery plastic-aluminum packaging film, wherein polyethylene low ratio foamed film improves the buffer capacity of plastic-aluminum packaging film effectively, strengthen film improve aluminium foil in plastic-aluminum packaging film be hit distortion intensity threshold, and then inhibit because plastic-aluminum packaging film is because of use generation bubbling or because the reasons such as processing mode are to the damaging influence of aluminium foil generation contained in lithium battery plastic-aluminum packaging film, thus substantially increase safety in utilization and the service life of lithium battery plastic-aluminum packaging film.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of the lithium battery plastic-aluminum packaging film in embodiment 1;
Fig. 2 is the cross section structure schematic diagram of the lithium battery plastic-aluminum packaging film in embodiment 3.
In figure: 1, outer diaphragm; 2-1, the first adhesive layer; 2-2, the second adhesive layer; 2-3, the 3rd adhesive layer; 2-4, the 4th adhesive layer; 3, aluminium foil; 4, film is strengthened; 5, foam films; 6, heat-sealing film.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection domain of the present utility model with this.
embodiment 1
The lithium battery plastic-aluminum packaging film that inventor proposes has layer structure, and it from top to bottom sets gradually outer diaphragm 1, first adhesive layer 2-1, aluminium foil 3, second adhesive layer 2-2, strengthens film 4, the 3rd adhesive layer 2-3, foam films 5 and heat-sealing film 6, as shown in Figure 1.
Wherein foam films 5 is polyethylene low ratio foamed film, be commonly called as pearl paper, a kind of antidetonation buffering, antistatic, protection against the tide, heat insulation, anti-soda acid, the material of buffering antidetonation, thickness is 5 ~ 30 microns, play the effect of the buffer capacity strengthening plastic-aluminum packaging film here, thus for improving its explosion-proof when plastic-aluminum packaging film is packed as lithium battery, suppressing to produce bubbling and the deformation resistant improved when being processed into packaging bag body.Strengthening film 4 be one in PP, PA, PE, PET, and thickness is 5 ~ 15 microns, and it plays and improves aluminium foil 3 in plastic-aluminum packaging film and to be hit the intensity threshold be out of shape, and the promising effect being equipped with the plastic-aluminum packaging film reinforcement of foam films 5.The thickness of aluminium foil 3 is 25 ~ 50 microns, plays the effect of obstruct, shading.Outer diaphragm 1 is PET casting films or PA casting films, and thickness is 20 ~ 40 microns, plays protection plastic-aluminum packaging film and avoids because of active forces such as external scrapings and the effect of breakage.Heat-sealing film 6 is CPP film, and thickness is 30 ~ 50 microns, plays the effect of heat-sealing and liquid barrier.Each adhesive layer is a kind of in polyurethane adhesive, epoxyn, acrylic resin adhesive, and thickness is 2 ~ 6 microns, plays the effect of gluing adjacent two layers.Here between foam films 5 and heat-sealing film 6 by heat bonding, namely by foamable film 5 particularly heat hot sealer 6 make foam films 5 together with heat-sealing film 6 heat bonding.
Note, the thickness strengthening film 4 is here selected 5 ~ 15 microns and is advisable, and the blocked up shock-absorbing capacity then affect foam films 5, crosses thin, does not have to improve aluminium foil 3 in plastic-aluminum packaging film and to be hit the effect of the intensity threshold be out of shape.
Add enhancing film 4 and foam films 5 successively by the inboard of the aluminium foil 3 in lithium battery plastic-aluminum packaging film, effectively improve the buffer capacity of plastic-aluminum packaging film, therefore substantially increase safety in utilization and the service life of lithium battery plastic-aluminum packaging film.
embodiment 2
On the basis of embodiment 1, as what improve, in the present embodiment, selective enhancement film 4 is the one in BOPP film, BOPA, BOPET film.Particularly selecting BOPP film for strengthening film 4, effectively can improve the adhesive power of itself and foam films 5.
embodiment 3
On the basis of embodiment 1, as what improve, in the present embodiment, as shown in Figure 2, not by heat bonding between foam films 5 and heat-sealing film 6, but be bonded together by the 4th adhesive layer 2-4 arranged, thus improve interlayer adhesion, improve the sealing of lithium battery plastic-aluminum packaging film.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. one kind high buffering lithium battery plastic-aluminum packaging film; it is characterized in that; described lithium battery plastic-aluminum packaging film has layer structure; comprise outer diaphragm, adhesive layer, aluminium foil, adhesive layer, enhancing film, adhesive layer, foam films and heat-sealing film from top to bottom successively; wherein said foam films is polyethylene low ratio foamed film; described outer diaphragm is PA casting films or PET casting films; described heat-sealing film is CPP film; described adhesive layer is a kind of in polyurethane adhesive, epoxyn, acrylic resin adhesive, and described enhancing film is the one in PP, PA, PE, PET.
2. high buffering lithium battery plastic-aluminum packaging film as claimed in claim 1, it is characterized in that, described enhancing film is the one in BOPP film, BOPA, BOPET film.
3. high buffering lithium battery plastic-aluminum packaging film as claimed in claim 2, it is characterized in that, described enhancing film is BOPP film.
4. high buffering lithium battery plastic-aluminum packaging film as claimed in claim 1, be is characterized in that, be also provided with adhesive layer, be bonded together by adhesive layer between described foam films and described heat-sealing film.
5. the high buffering lithium battery plastic-aluminum packaging film as described in Claims 1-4 any one; it is characterized in that; the thickness of described heat-sealing film is 30 ~ 50 microns; the thickness of described foam films is 5 ~ 30 microns; the thickness of described enhancing film is 5 ~ 15 microns; the thickness of described aluminium foil is 25 ~ 50 microns, and the thickness of described outer diaphragm is 20 ~ 40 microns, and the thickness of each described adhesive layer is 2 ~ 6 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520093983.8U CN204547234U (en) | 2015-02-10 | 2015-02-10 | A kind of high buffering lithium battery plastic-aluminum packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520093983.8U CN204547234U (en) | 2015-02-10 | 2015-02-10 | A kind of high buffering lithium battery plastic-aluminum packaging film |
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| Publication Number | Publication Date |
|---|---|
| CN204547234U true CN204547234U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520093983.8U Active CN204547234U (en) | 2015-02-10 | 2015-02-10 | A kind of high buffering lithium battery plastic-aluminum packaging film |
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| CN (1) | CN204547234U (en) |
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- 2015-02-10 CN CN201520093983.8U patent/CN204547234U/en active Active
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214400, Jiangsu, Wuxi Jiangyin mayor Jing Jing Tong Kong Road, No. 26 Patentee after: JIANGYIN JUNCHI COMPOSITE MATERIAL CO.,LTD. Address before: 214400, Jiangsu, Wuxi Jiangyin mayor Jing Jing Tong Kong Road, No. 26 Patentee before: Jiangyin Junchi Photoelectric Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20151117 Address after: 214400, Jiangsu, Jiangyin province mayor Jing Jing Tong Kong Road, No. 26 Patentee after: JIANGYIN SUDA HUICHENG COMPOSITE MATERIAL CO.,LTD. Address before: 214400, Jiangsu, Wuxi Jiangyin mayor Jing Jing Tong Kong Road, No. 26 Patentee before: JIANGYIN JUNCHI COMPOSITE MATERIAL CO.,LTD. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 214400 No. 68-1, Tong'an Road, Qingyang Town, Jiangyin City, Wuxi City, Jiangsu Province Patentee after: JIANGYI SUDA HUICHENG COMPOSITE MATERIAL CO.,LTD. Address before: 214400 No.26 Tonggang Road, Changjing Town, Jiangyin, Jiangsu Province Patentee before: JIANGYIN SUDA HUICHENG COMPOSITE MATERIAL CO.,LTD. |