Waste recycling method, waste recycling system, plastic composition raw material, member made of plastic composition, and manufacturing method thereof

摘要

PPROBLEM TO BE SOLVED: To provide an efficient and inexpensive method for recycling waste by which plastic waste is separated from plastic-mixed waste by each category and a plastic composition having low impurity content can be obtained. PSOLUTION: This method for recycling the waste being a scrapped product provided with a member consisting of the plastic composition comprises a step to selectively recover the scrapped product provided with the member which consists of the plastic composition of the same category and has specific gravity of a definite range, a step to crush the recovered waste, a step to sort the crushed waste into a metal-based crushed portion, a plastic-based crushed portion and a low-bulk density crushed portion, a step to separate the plastic-based crushed portion into plastic compositions of respective categories by using a plurality of separating liquids different in specific gravity and a step to mold the separated plastic compositions of respective categories into the specified shapes, respectively. PCOPYRIGHT: (C)2003,JPO