Pouch for packing cell and method for preparing the same

A technology for batteries and packaging materials, applied in chemical instruments and methods, layered products, metal layered products, etc., can solve the problems of reduced processing efficiency and poor molding performance in the PET lamination process, and achieve light weight, excellent quality Barrier and cost-reducing effect

Active Publication Date: 2009-10-21
YOULCHON CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the increased PET lamination process reduces the processing efficiency and the use of PET makes the moldability worse

Method used

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  • Pouch for packing cell and method for preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1: Biaxially Oriented Polyester Film / Urethane Adhesive Layer / Barrier Layer (Al) Comprising 100 Molar Parts of Terephthalic Acid as Acid Component Per 130 Molar Parts of 1,3-Propanediol as Diol Component / Polypropylene hot-melt resin layer / including Al deposited thereon 2 o 3 The sealant layer of the three-layer polyolefin film The thickness was measured three times with a micrometer (Mitutoyo 1 / 1,000mm), and the average value was taken.

Embodiment 2

[0049] Example 2: Biaxially Oriented Polyester Film / Urethane Adhesive Layer / Barrier Layer (Al) Comprising 100 Molar Parts of Terephthalic Acid as Acid Component Per 130 Molar Parts of 1,3-Propanediol as Diol Component / urethane adhesive layer / includes Al deposited thereon 2 o 3 The sealant layer of the three-layer polyolefin film

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Abstract

Provided are a pouch for packing a cell such as a lithium secondary cell or a portable storage battery and a method for preparing the same. The pouch for packing a cell such as a lithium secondary cell or a portable storage battery according to the present invention has drastically improved electrolyte resistance, which is particularly required for a cell pouch, and, therefore, is capable of preventing the corrosion of the barrier layer by the electrolyte and preventing de- lamination of the sealant layer from the barrier layer. Further, the pouch for packing a cell according to the present invention it is capable of protecting the cell safely, is shaped freely, has superior barrier property, moldability, impact resistance, air(oxygen) penetration resistance, moisture permeation resistanceand piercing strength, reduces manufacturing time, improves process efficiency, reduces cost, and is lightweight.

Description

technical field [0001] The present invention relates to a bag for packaging batteries such as lithium secondary batteries, portable storage batteries and the like and a preparation method thereof. Background technique [0002] As packaging materials for packaging batteries such as lithium secondary batteries, portable storage batteries and the like, those produced by press-working metals (especially aluminum) into cylindrical or parallelepiped shapes are often used. However, such metal cans have a limitation in that, since the outer wall is rigid, the shape of the battery is disadvantageously limited. [0003] To overcome this limitation, bags made of multilayer plastic films have been developed. [0004] For example, Korean Patent Application 2003-7002427 discloses a battery pouch comprising a substrate layer, an adhesive layer, a barrier layer, a dry laminate layer and a sealant layer, wherein the sealant layer comprises a low flow polypropylene layer and high flow polyp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/08
CPCB32B27/32
Inventor 金永熙姜汉俊韩喜植尹宗云
Owner YOULCHON CHEM
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