【発明の名称】積層体及びその製造方法

Title:

【発明の名称】積層体及びその製造方法

Document Type and Number:

Japanese Patent JP2927109

Kind Code:

B2

Abstract:

PURPOSE:To reduce the environmental disruption due to a used packing container by obtaining a packing container from a laminate easy to biodegrade. CONSTITUTION:A laminate consists of a plurality of layers between which straight chain polyester being a 3-hydroxybutric acid/3-hydroxyvaleric acid copolymer is interposed. When polyester is laminated, it is thermally decomposed by the heat generated at the time of extrusion molding and, therefore, in order to prevent this thermal decomposition, polyester 2 and polyolefin 3 are subjected to co-extrusion to be superposed on a sheet like base material so that polyester 2 is superposed on the base material 1.

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Inventors:

HACHIFUSA KAZUYA
KATO TAKEO
AIZAWA TETSUO
TANIGUCHI MASAYUKI

Application Number:

JP19746392A

Publication Date:

July 28, 1999

Filing Date:

July 02, 1992

Export Citation:

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Assignee:

TOTSUPAN INSATSU KK

International Classes:

B29C47/06; B32B27/36; B32B37/00; B65D65/40; C08G63/06; C08L67/04; C08L101/16; B29K67/00; B29L7/00; B29L9/00; (IPC1-7): B32B27/36; B29C47/06; B32B31/18; B65D65/40; C08L67/04

Domestic Patent References:

JP62209144A

Attorney, Agent or Firm:

Akimoto Teruo

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