LAMINATED FILM

Japanese Patent JP3520574

B2

PURPOSE: To obtain heat seal suitability and biodegradability by a method wherein the unoriented film of the thermoplastic polymer of aliphatic glycol, aliphatic dicarboxylic acid, aliphatic polyester polyol and aliphatic polyester, shown by a formula, is laminated on the biaxially oriented film of thermoplastic polymer of copolymer of polylactic acid.
CONSTITUTION: A laminated film is constituted by a method wherein the thermoplastic polymer unoriented film of aliphatic polyester shown by a formula (here: m, m'≥30, M≥1, n, n'≤10 of even number, R is residue of di-isocyanate) and having the number-average molecular weight of 10000 or more, which can be obtained by reacting polyfunctional isocyanate on aliphatic polyester polyol having a hydroxyl base terminal end obtained by reacting dehydrate reaction and deglycol reaction under the existence or no-existence of aliphatic glycol, aliphatic dicarboxylic acid, small amount of alcohol having polyhydric alcohol of higher than tervalent, polyhydric oxycarboxylic acid or polyhydric carboxyl of higher than tervalent, and the biaxially oriented film of thermoplastic polymer of copolymer of polylactic acid or lactic acid and oxycarboxylic acid are laminated.

JP2010515599	Base material with barrier properties in high humidity
WO/2023/095508	LAMINATE ADHESIVE, LAMINATE FOR PACKAGING AND PACKAGE
JP6901058	Paper laminate

Hachifusa, Kazuya
Kono, Michinori
Taniguchi, Masayuki

JP22152294A

April 19, 2004

September 16, 1994

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TOPPAN PRINTING CO LTD

B65D65/40; B29C55/12; B32B27/08; B32B27/36; C08L101/16; B29K67/00; B29L9/00; (IPC1-7): B32B27/36

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