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Polypropylene film used for ultra-thin type aluminum-plastic film and preparation method thereof

A technology of polypropylene film and polypropylene, which is applied in the field of polypropylene film, can solve the problems of no polypropylene film, etc., and achieve the effects of good temperature resistance, packaging and drawing performance guarantee, and low crystal point

Pending Publication Date: 2018-03-06
SHANGHAI ZIJIANG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there is no such polypropylene film that can cooperate with ultra-thin aluminum-plastic film

Method used

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  • Polypropylene film used for ultra-thin type aluminum-plastic film and preparation method thereof
  • Polypropylene film used for ultra-thin type aluminum-plastic film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 1 It is a schematic structural diagram of a polypropylene film for an ultra-thin aluminum-plastic film, and the polypropylene film for an ultra-thin aluminum-plastic film includes a polypropylene outer layer 1, a polypropylene core layer 2 and a polypropylene heat-sealing layer 3, and the described The polypropylene core layer 2 is arranged between the polypropylene outer layer 1 and the polypropylene heat-sealing layer 3, and the polypropylene outer layer 1, the polypropylene core layer 2 and the polypropylene heat-sealing layer 3 are combined together.

[0029] The melting points of the polypropylene outer layer 1, polypropylene core layer 2 and polypropylene heat-sealing layer 3 are 148°C, 164°C and 142°C, respectively. The thickness ratio of the polypropylene outer layer 1, the polypropylene core layer 2 and the polypropylene heat-sealing layer 3 is 1:2:1, and the total thickness is 20 m.

[0030] The thickness of the polypropylene outer layer 1 is 5 μm, and...

Embodiment 2

[0042] figure 1It is a schematic structural diagram of a polypropylene film for an ultra-thin aluminum-plastic film, and the polypropylene film for an ultra-thin aluminum-plastic film includes a polypropylene outer layer 1, a polypropylene core layer 2 and a polypropylene heat-sealing layer 3, and the described The polypropylene core layer 2 is arranged between the polypropylene outer layer 1 and the polypropylene heat-sealing layer 3, and the polypropylene outer layer 1, the polypropylene core layer 2 and the polypropylene heat-sealing layer 3 are combined together.

[0043] The melting points of the polypropylene outer layer 1, polypropylene core layer 2 and polypropylene heat-sealing layer 3 are 148°C, 164°C and 142°C, respectively. The thickness ratio of the polypropylene outer layer 1, the polypropylene core layer 2 and the polypropylene heat-sealing layer 3 is 1:3:1, and the total thickness is 25 m.

[0044] The thickness of the polypropylene outer layer 1 is 5 μm, and ...

Embodiment 3

[0056] figure 1 It is a schematic structural diagram of a polypropylene film for an ultra-thin aluminum-plastic film, and the polypropylene film for an ultra-thin aluminum-plastic film includes a polypropylene outer layer 1, a polypropylene core layer 2 and a polypropylene heat-sealing layer 3, and the described The polypropylene core layer 2 is arranged between the polypropylene outer layer 1 and the polypropylene heat-sealing layer 3, and the polypropylene outer layer 1, the polypropylene core layer 2 and the polypropylene heat-sealing layer 3 are combined together.

[0057] The melting points of the polypropylene outer layer 1, polypropylene core layer 2 and polypropylene heat-sealing layer 3 are 148°C, 164°C and 142°C, respectively. The thickness ratio of the polypropylene outer layer 1, the polypropylene core layer 2 and the polypropylene heat-sealing layer 3 is 1:1:1, and the total thickness is 30 m.

[0058] The thickness of the polypropylene outer layer 1 is 10 μm, an...

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Abstract

The invention provides a polypropylene film used for an ultra-thin type aluminum-plastic film. The polypropylene film comprises a polypropylene outer layer, a polypropylene core layer and a polypropylene heat-seal layer, wherein the polypropylene core layer is arranged between the polypropylene outer layer and the polypropylene heat-seal layer, and the polypropylene outer layer, the polypropylenecore layer and the polypropylene heat-seal layer are sequentially compounded together. The invention also provides a preparation method of the polypropylene film used for the ultra-thin type aluminum-plastic film. According to the preparation method, polypropylene resin of different melting points are combined, so that polypropylene has better temperature resistance; and a charging device with a vacuumizing or nitrogen sealing function and a secondary filtration technology are used, and one or more combinations of other raw materials is added, so that the produced casting polypropylene film has fewer crystal points. The casting polypropylene film is applicable to the ultra-thin type aluminum-plastic film, thinning is guaranteed, and packaging and depth scouring performances are also guaranteed at the same time.

Description

technical field [0001] The invention relates to a polypropylene film, in particular to a polypropylene film suitable for ultra-thin aluminum-plastic films and a preparation method thereof. Background technique [0002] Polypropylene is a material widely used in the field of soft-pack lithium-ion batteries, mainly used for separators of lithium batteries, heat-sealing layers of aluminum-plastic films, and tab glue for tabs. In the 3C digital field, especially mobile phones, the trend of thinning has been developing, so there are requirements for the thinning of various materials. For lithium-ion batteries, which are an important part of mobile phones, in addition to thinning The constant and improved battery capacity requires more stringent requirements. For aluminum-plastic films, it is necessary to ensure that the packaging and drawing performance cannot be reduced while ensuring thinning. [0003] In the prior art, there is no such polypropylene film that can cooperate w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/08B29C47/06B29C47/56B29C47/68B29C47/10B29K23/00B29L7/00B29L9/00
CPCB29C48/18B29C48/285B29C48/49B29C48/69B32B27/08B32B27/18B32B27/32B29K2023/12B29L2007/00B29L2009/00B32B2250/242B32B2307/306B32B2457/10
Inventor 贺爱忠陈涛沈均平
Owner SHANGHAI ZIJIANG NEW MATERIAL TECH CO LTD
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