ＰＥＴボトル及びその製造方法

Japanese Patent JP7411136

B2

Provided is a polyester-based heat shrink film capable of effectively suppressing a blocking phenomenon when being recycled. The present invention provides a polyester-based heat shrink film originating from a first polyester resin and a second polyester resin that serve as a plurality of polyester resins differing from each other in terms of the crystallinity, wherein the following properties (A)-(E) are satisfied. (A) and (B) The first polyester resin contains terephthalic acid, the reacting weight thereof with respect to ethylene glycol is in a range of values that are equal to or greater than 50 mol% and less than 90 mol%, the second polyester resin contains terephthalic acid, and the reacting weight thereof with respect to ethylene glycol is equal to or greater than 90 mol%. (C) and (D) In the case in which prescribed isothermal crystallization measurement is performed, a heat generation peak appears within 12 min. from the start, including the time for performing a cooling step, and the amount of heat at the heat generation peak is 5-35 J/g. (E) The thermal shrinkage percentage in the principal shrinkage direction measured under prescribed conditions is 20-60%.

Tatsuya Irifune
Takuma Kaneko
Yuichiro Kanzaka
Shuta Yuge

JP2023111302A

January 10, 2024

July 06, 2023

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Takiron C.I. Co., Ltd.

C08J5/00; B65D1/00; B65D65/04; C08G63/183; C08J5/18; C08L67/02

JP62095341A
JP61203161A
JP61064430A
JP1127317A
JP2007056156A
JP2010248496A

WO2022044959A1

Kenji Emori
Yuko Tanaka

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