Stack film layer and producing method thereof

A production method and film layer technology, applied in the direction of final product manufacturing, sustainable manufacturing/processing, electrical components, etc., can solve the problems of poor chemical resistance of nylon film 11, reduce the yield rate of finished products, etc., and achieve the improvement of process yield rate , high puncture resistance, and the effect of simplifying the process steps

Inactive Publication Date: 2017-06-13
TAIFLEX SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the chemical resistance of the nylon membrane 11 is poor, and the electrolyte may produce whitening marks on the surface of the nylon membrane 11, resulting in defective products with appearance defects, thereby reducing the yield of finished products.

Method used

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  • Stack film layer and producing method thereof
  • Stack film layer and producing method thereof
  • Stack film layer and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] At room temperature, an acid-modified polyolefin (mPO) was coated onto an aluminum film having a film thickness of about 40 micrometers using a knife coating method. Then, the surface of the aluminum layer with acid-modified polyolefin is placed on the polypropylene (polypropylene, PP) film as the inner layer and bonded, so that the polypropylene film is bonded to the aluminum film by the acid-modified polyolefin combination, wherein the acid-modified polyolefin as the adhesive layer has a film thickness of about 3 microns to 5 microns, and the polypropylene film has a film thickness of about 40 microns. Next, a resin layer with polyvinyl butyral (polyvinyl butyral, PVB) is directly coated on the other surface of the aluminum film using a doctor blade coating method, and dried to form a film by a thermosetting method to form a film with The outer layer is 25 microns thick. The stacked film layer of the present invention is completed by the above steps.

Embodiment 2

[0054] The stacked film layer of Example 2 is prepared by the same steps as Example 1. The difference is that the film thickness of the outer layer is changed (as shown in Table 1), wherein the film thickness of the outer layer in Example 2 is 15 microns.

Embodiment 3

[0056] At room temperature, an acid-modified polypropylene (mPP) is formed into an aluminum film with a film thickness of about 40 microns using a coating process. Then, the surface of the aluminum layer with acid-modified polypropylene is placed on the polypropylene film as the inner layer, and the temperature is raised to 150 degrees Celsius and the pressure is increased to 5 kgf (kilogram-force, kgf), and the heat-pressed The method makes the polypropylene film adhere to the aluminum film by acid-modified polypropylene, wherein the film thickness of the acid-modified polypropylene as an adhesive layer is about 10 microns to 15 microns, and the polypropylene film has a thickness of about 30 microns to 35 microns. Micron film thickness. Next, the resin layer with PVB was directly coated on the other surface of the aluminum film by a doctor blade coating method, and dried to form a film by a thermosetting method to form an outer layer with a film thickness of 25 microns. The ...

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Abstract

The invention provides a stack film layer and a producing method thereof. The stack film layer includes a metal layer, a first resin layer, a second resin layer and an adhesive layer; the metal layer has a first surface and a second surface which face each other; the first resin layer is arranged on the first surface of the metal film; the second resin layer is arranged on the second surface of the metal film; the adhesive layer is arranged on the second resin layer and is positioned between the metal film and the second resin layer. The producing step can be simplified, and the thickness and the yield of the film can be accurately controlled.

Description

technical field [0001] The invention relates to a stacked film layer and a manufacturing method thereof, in particular to a stacked film layer used as a packaging material and a manufacturing method thereof. Background technique [0002] Lithium batteries are used as storage batteries for portable devices such as notebook personal computers and mobile phones, and for hybrid vehicles and electric vehicles. With the increasing market demand for lithium batteries that can be repeatedly charged and discharged with the characteristics of light weight, high voltage value and high energy density, the demand for lithium batteries such as light weight, durability, high voltage, high energy density and high safety The requirements are also getting higher and higher. [0003] Generally speaking, the aluminum-plastic film used to pack lithium batteries has a laminated structure, and as the simplest laminated structure, such as figure 1 Such a sequence from top to bottom includes a nyl...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M10/052H01M50/116H01M50/124
CPCH01M10/052H01M50/116H01M50/124Y02E60/10Y02P70/50
Inventor邓伊玲王博生萧钲谚洪子景阮泓宪
OwnerTAIFLEX SCI