BIODEGRADABLE FIBER LAMINATE AND ITS MANUFACTURING METHOD

Title:

BIODEGRADABLE FIBER LAMINATE AND ITS MANUFACTURING METHOD

Document Type and Number:

Japanese Patent JP2004255833

Kind Code:

A

Abstract:

To provide a biodegradable fiber laminate which is biodegradable and can be deeply drawn with a press, and a method of manufacturing the laminate.

A cotton-like sheet is formed of a bamboo fiber and a polylactic acid fiber mixed in a specified weight ratio and intertwined to each other by a needle punch method. A preform is obtained by holding a reticular sheet 18 with the cotton-like sheet in a sandwich fashion. Next, the preform is heated at a lower temperature than the melting point of the bamboo fiber, exceeding the melting point of the polylactic acid fiber. In addition, a nonoven fabric 15 is placed on the heated preform, set in a mold 21 with the surface heated at a specified temperature and press-molded. After that, the mold is completely clamped and kept in this state for a specified time, and a shaped tray 11 is annealed under a slightly eased clamping pressure.

Inventors:

ITO TATSURO
MUROTA SHOJI
MIZUNO KATSUTOSHI
HORIBA YUKIHIKO

Application Number:

JP2003051888A

Publication Date:

September 16, 2004

Filing Date:

February 27, 2003

Export Citation:

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Assignee:

TOYODA GOSEI KK

International Classes:

B60R13/02; B29C43/18; B29C43/52; B32B27/04; B32B27/12; C08L101/16; B29K67/00; B29K105/08; B29L31/58; (IPC1-7): B32B27/04; B29C43/18; B29C43/52; B32B27/12; B60R13/02

Attorney, Agent or Firm:

Hironobu Onda
Makoto Onda

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