Title:
MULTILAYER FILM, LID MATERIAL FOR FOOD PACKAGING CONTAINER, AND FOOD PACKAGING CONTAINER
Document Type and Number:
WIPO Patent Application WO/2023/127593
Kind Code:
A1
Abstract:
[Problem] The purpose of the present invention is to provide a multilayer film having suitable anti-fogging properties, ease of opening, impact resistance, and blocking resistance. [Solution] A multilayer film having at least two layers consisting of a substrate layer and an anti-fogging layer, wherein (a) the heat seal strength at each of the temperatures 120ºC, 140ºC, 160ºC, and 180ºC is 2.0-12.0 N/15 mm, (b) the water contact angle under conditions in which the temperature is 5ºC and the relative humidity is 50% is 50º or less, (c) the peel strength of the anti-fogging layer surface and the substrate layer surface of the multilayer film is 1 N/15 mm or less, (d) the impact strength under conditions in which the temperature is 5ºC is 0.5 J or more, (e) the tearing strength under conditions in which the temperature is 5ºC is 100 mN or more in both the MD direction and the TD direction of the multilayer film, and (f) the thickness of the anti-fogging layer is 0.3 μm or more and less than 3.0 μm.
Inventors:
TAMARI NOBORU (JP)
HARUTA MASAYUKI (JP)
HARUTA MASAYUKI (JP)
Application Number:
PCT/JP2022/046836
Publication Date:
July 06, 2023
Filing Date:
December 20, 2022
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B32B27/18; B32B27/00; B32B27/36; B65D65/40
Domestic Patent References:
| WO2018179689A1 | 2018-10-04 |
Foreign References:
| JPH0796585A | 1995-04-11 | |||
| JP2002275362A | 2002-09-25 | |||
| JP2017209996A | 2017-11-30 |
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