Apparatus for producing biodegradable resin foam

Details Apparatus for producing biodegradable resin foam Apparatus for producing biodegradable resin foam

1996-10-23

1998-12-15

Ryan, Patrick

Plastic article or earthenware shaping or treating: apparatus

With mechanical means forming or expanding pores

264 51, 264 55, 425 73, 425557, B29C 4902

Patent

active

058493395

ABSTRACT:
Foam forming techniques are capable of permitting foaming of biodegradable resin to be positively and uniformly accomplished to provide a biodegradable resin foam with satisfactory quality. The biodegradable resin including foam is made of biodegradable resin a main biodegradable resin ingredient of 100.degree. C. or more in melting point and a low-melting biodegradable resin ingredient of 100.degree. C. or less in melting point. The biodegradable resin foam is produced by placing a starting material of at least biodegradable resin and a substantial amount of moisture in a heated and pressurized environment, releasing the starting material from the environment to foam the biodegradable resin, and subjecting the foamed resin to forming by a forming mold. An apparatus for producing the foamed biodegradable resin foam includes a pressure adjusting chamber, an air-permeable forming mold, a pressure reducing tank and an injection machine.

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