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US 12,043,717 B2Granted
Foam sheet, product, formed product, and method for producing foam sheet
AssigneeRicoh Company, Ltd.
InventorsYoshimitsu Kumai, Taichi Nemoto, Shizuka Hashida, Ryo Miyakoshi
Life of this patent
Estimating the term…
Abstract
Provided is a foam sheet includes a composition including polylactic acid. The polylactic acid includes, as monomer units. D-lactic acid and L-lactic acid, and an amount of the D-lactic acid or the L-lactic acid in the polylactic acid is 98 mol % or greater. An amount of the polylactic acid is 98% by mass or greater relative to a total amount of organic matter in the foam sheet. Bulk density of the foam sheet is 0.063 g/cm3 or greater but 0.125 g/cm3 or less.
Claims15
A foam sheet, comprising:
- a composition including polylactic acid,
- wherein the polylactic acid includes, as monomer units, D-lactic acid and L-lactic acid, and an amount of the D-lactic acid or the L-lactic acid in the polylactic acid is 98 mol % or greater,
- an amount of the polylactic acid is 98% by mass or greater relative to a total amount of organic matter in the foam sheet, and
- bulk density of the foam sheet is 0.063 g;
- cm3 or greater but 0.125 g/cm3 or less.
2 more elements
Dependencies are inferred from the claim text.