Title:
MOISTURE-RESISTANT BIODEGRADABLE RESIN FOAM
Document Type and Number:
Japanese Patent JP3398851
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a moisture-resistant biodegradable resin foam having improved moisture resistance and biodegradability by foaming a composition containing starch, polyvinyl alcohol and an aliphatic polyester.
SOLUTION: 10-15wt.% water is added to a composition obtained by mixing 40-80wt.% starch with 10-20wt.% polyvinyl alcohol and 10-40wt.% aliphatic polyester or by mixing 40-80wt.% starch with 19-55wt.% polyvinyl alcohol and 1-5wt.% polypropylene, and the resulting mixture is fed into an extruder, subjected to conditions including a temperature of 200-270°C and a pressure of 60-100atm, and extruded from a nozzle into atmosphere to obtain a foam.
Inventors:
Hitoshi Hayashibara
Kazunori Hayashibara
Kazunori Hayashibara
Application Number:
JP26503096A
Publication Date:
April 21, 2003
Filing Date:
August 29, 1996
Export Citation:
Assignee:
Plast Inc.
International Classes:
C08J9/12; C08L3/00; C08L3/02; C08L29/04; C08L67/00; C08L101/16; (IPC1-7): C08J9/12
Domestic Patent References:
| JP7258453A |
Attorney, Agent or Firm:
Itsuro Takeda