Title:
CAVITY-CONTAINING POLYESTER FILM
Document Type and Number:
WIPO Patent Application WO/2022/059580
Kind Code:
A1
Abstract:
[Problem] To provide a cavity-containing polyester film which exhibits excellent concealability, degree of whiteness and printability, and which is still free from the occurrence of a wrinkle, distortion and the like in cases where, for example, the cavity-containing polyester film is used for a roll label, and a label is delivered therefrom or wound around a product. [Solution] A cavity-containing polyester film which comprises a layer A that internally contains a cavity, and layers B that are arranged on both surfaces of the layer A, wherein: the layer A is formed of a composition A that contains a polyester resin A and a polypropylene resin; the layers B are formed of a composition B that contains inorganic particles and a polyester resin B; and the amount of self-weight deflection of the film is from 60 mm to 100 mm at least in one direction.
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Inventors:
MATSUMURA MEI (JP)
NISHIO SHOTARO (JP)
SHIMIZU AKIRA (JP)
NISHIO SHOTARO (JP)
SHIMIZU AKIRA (JP)
Application Number:
PCT/JP2021/033057
Publication Date:
March 24, 2022
Filing Date:
September 08, 2021
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B32B27/36; B29C67/20; B32B5/18; B32B27/20; G09F3/02; B29K33/04; B29K105/04; B29L7/00
Domestic Patent References:
| WO2017170002A1 | 2017-10-05 | |||
| WO2018159811A1 | 2018-09-07 | |||
| WO2017010306A1 | 2017-01-19 |
Foreign References:
| JP2002052674A | 2002-02-19 | |||
| JP2020011494A | 2020-01-23 | |||
| JPS49134755A | 1974-12-25 | |||
| JPH02284929A | 1990-11-22 | |||
| JPH02180933A | 1990-07-13 | |||
| JPS5429550A | 1979-03-05 | |||
| JPH11116716A | 1999-04-27 |
Other References:
See also references of EP 4215365A4
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