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US 12,624,438 B2Granted
Gas barrier laminate, packaging member, packaging bag, and tubular container
AssigneeToppan Inc.
InventorsAyumi Tanaka, Mikinori Yamada, Takeshi Nishikawa, Miki Fukugami
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Abstract
A gas barrier laminate including: a substrate layer which contains a polyolefin resin; a metal oxide-containing layer which contains a metal oxide; and an overcoat layer which contains a polyvinyl alcohol resin, the overcoat layer having a surface, the overcoat layer having a surface which has a softening temperature of 100 to 170° C., as measured by local thermal analysis.
Claims17
A gas barrier laminate, comprising:
- a substrate layer which contains a polyolefin resin;
- a metal oxide-containing layer which contains a metal oxide;
- and
- an overcoat layer which contains a polyvinyl alcohol resin and a polyurethane resin, a mass ratio between the polyurethane resin and the polyvinyl alcohol resin being 0.9 to 1.2, the overcoat layer having a surface which has a softening temperature of 130 to 170° C., as measured by local thermal analysis.
1 more element
Dependencies are inferred from the claim text.