Patent ID: 6136255
Filing Date: 2000-10-24
Classification: B29C,B29K

Abstract:
A method for manufacturing biodegradable molded objects, comprising the steps of:placing materials having biodegradability in a mold having first and second conductive mold halves and an insulating section therebetween; andapplying across both said mold halves alternating current from an alternating current power source, thus heating and expanding said materials by means of dielectric heating,wherein:said first mold half is provided with a conductive incoming section;a conductive feeder section is provided in parallel with said incoming section, so as to be not in contact with said incoming section; andin said alternating current applying step, said materials are heated and expanded by means of the dielectric heating, by moving said mold containing said materials in a predetermined direction, and by applying the alternating current from the alternating current power source through said feeder section and said incoming section by applying an electric field in a direction crossing the direction of the movement of said mold.