MANUFACTURING PROCESS OF FOAMED POLYOLEFIN BASED RESIN MOLDING USING LUMP OBTAINED FROM WASTE FOAMED POLYOLEFIN BASED RESIN MOLDING

摘要

PPROBLEM TO BE SOLVED: To provide a recycling method which can again use waste foamed polyolefin moldings having been incinerated/reclaimed as foamed moldings and to provide moldings with a low defective fraction by using the method. PSOLUTION: The waste foamed polyolefin moldings are pulverized to those having a size of 1-100 mm, and, after a heating volume reduction is carried out, lumps are formed. The lumps are pulverized so as to have a size of 1-30 mm, then mixed with a virgin polyolefin resin, and thereafter pelletized with an extruder. After the resultant pellets an impregnated with a blowing agent in an aqueous dispersion system, preliminary foaming particles are made, and foam moldings are made using them. And, the moldings are produced using the above manufacturing process. PCOPYRIGHT: (C)2007,JPO&INPIT