Title:
熱収縮性ポリエステル系フィルム
Document Type and Number:
Japanese Patent JP7427995
Kind Code:
B2
Abstract:
To provide a heat-shrinkable polyester-based film which has sufficient shrinkage in a longitudinal direction as a main shrinkage direction, can perform shrinkage finishing having a good appearance, and has excellent heat-sealing property, sufficient mechanical strength in the longitudinal direction, and little natural shrinkage.SOLUTION: There is provided a heat-shrinkable polyester-based film which satisfies at least the following requirements (1) to (4): (1) The film has a shrinkage of 30% or more and 70% or less in a longitudinal direction of the film when treated for 30 seconds in hot air of 80°C; (2) When the film is heat-sealed at 130°C at a pressure of 0.2 MPa, the film has a peel seal strength of 4 N/15 mm or more and 15 N/15 mm or less; (3) The film has a planar orientation of 0.050 or more and 0.080 or less; and (4) A ratio A1/A2 of the absorbance (A1) at 1340 cm-1 and the absorbance (A2) at 1410 cm-1 of the heat-shrinkable film as determined on at least one surface of the film by polarized ATR-FTIR spectroscopy is 0.50 or more and 1.20 or less in the longitudinal direction of the film.SELECTED DRAWING: Figure 1
Inventors:
山▲崎▼ 敦朗
Masayuki Haruta
Masayuki Haruta
Application Number:
JP2020022288A
Publication Date:
February 06, 2024
Filing Date:
February 13, 2020
Export Citation:
Assignee:
Toyobo Co., Ltd.
International Classes:
C08J5/18; B29C61/02; B29C61/06; B65D65/00; C08L67/02
Domestic Patent References:
| JP2019107854A | ||||
| JP2000297160A | ||||
| JP2009161625A |
Foreign References:
| WO2014199787A1 | ||||
| WO2011114934A1 |