STRETCHED MULTILAYER FILM AND PACKAGING BAG FORMED OF SAME

Title:

STRETCHED MULTILAYER FILM AND PACKAGING BAG FORMED OF SAME

Document Type and Number:

WIPO Patent Application WO/2022/065379

Kind Code:

A1

Abstract:

The present invention relates to a stretched multilayer film which comprises one or more PBT layers and one or more PET layers, wherein: the total content of copolymer components in the PBT is 8 mol% or less, and the total content of copolymer components in the PET is 5 mol% or less; and the PBT layers and the PET layers are stacked upon each other without having an adhesive interposed therebetween. Consequently, the present invention is able to provide a stretched multilayer film which effectively exhibits both excellent heat resistance and excellent toughness of PET and PBT.

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Inventors:

YAMADA TOSHIKI (JP)
HATA MOTOHIDE (JP)
MATSUSAKI REN (JP)
HIROTA NORIHISA (JP)

Application Number:

PCT/JP2021/034856

Publication Date:

March 31, 2022

Filing Date:

September 22, 2021

Export Citation:

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Assignee:

TOYO SEIKAN KAISHA LTD (JP)

International Classes:

B29C55/12; B29C55/14; B29C55/16; B32B27/36; B65D65/40

Domestic Patent References:

WO2014065380A1

2014-05-01

Foreign References:

JPH03189149A	1991-08-19
JP2005254629A	2005-09-22

Attorney, Agent or Firm:

ONO, Hisazumi et al. (JP)

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