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US 10,864,710 B2Granted
Film
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsNoriko Yagi, Yasuhiro Kusanose, Hiroyuki Ichino, Masahiro Fujiwara
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Abstract
The disclosure provides a film wherein an outer layer includes a polypropylene resin, an intermediate layer includes a polypropylene resin and a hydrogenated block copolymer (a), and an inner layer includes a polypropylene resin.
Claims11
A film comprising at least an outer layer, an intermediate layer, and an inner layer, wherein
- the outer layer comprises a polypropylene resin,
- the intermediate layer comprises a polypropylene resin and a hydrogenated block copolymer (a), and
- the inner layer comprises a polypropylene resin, and wherein
- a content of the vinyl aromatic compound monomer unit in the hydrogenated block copolymer (a) is 3 to 13% by mass,
- the hydrogenated block copolymer (a) has a degree of hydrogenation of 90 mol %,
- an amount of butylene and/or amount of propylene in the hydrogenated block copolymer (a) is 60 to 85 mol % based on 100 mol % of the conjugated diene compound unit in total,
- the hydrogenated block copolymer (a) has a crystallization peak at 0 to 60° C.,
- the hydrogenated block copolymer (a) has a heat quantity of crystallization of 1.0 to 8.0 J/g, and
- the hydrogenated block copolymer (a) has a Shore A hardness of 25 to 55.
6 more elements
Dependencies are inferred from the claim text.