Title:
ポリエステル系熱収縮フィルム
Document Type and Number:
Japanese Patent JP7375258
Kind Code:
B2
Abstract:
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%.
Inventors:
Tatsuya Irifune
Takuma Kaneko
Yuichiro Kanzaka
Shuta Yuge
Takuma Kaneko
Yuichiro Kanzaka
Shuta Yuge
Application Number:
JP2023504671A
Publication Date:
November 07, 2023
Filing Date:
June 22, 2022
Export Citation:
Assignee:
Takiron C.I. Co., Ltd.
International Classes:
C08J5/18; B29C61/06; B65D65/40
Domestic Patent References:
| JP61203161A | ||||
| JP2010248496A | ||||
| JP61064430A | ||||
| JP62095341A | ||||
| JP1127317A | ||||
| JP2007056156A |
Foreign References:
| WO2022044959A1 |
Attorney, Agent or Firm:
Kenji Emori
Yuko Tanaka
Yuko Tanaka
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