TREATING AND REGENERATING METHOD FOR COATING PLASTIC MOLDED FORM

摘要

PURPOSE:To obtain a low-cost plastic regenerated product without impairing a surface external appearance by regenerating a coating film without separating and removing from a plastic molded form. CONSTITUTION:A method for treating coating plastic molded form comprises the steps of adding 0.01-10 pts.wt. of acid anhydride to 100 pts.wt. of plastic molded form by pulverizing or without pulverizing the form coated at least part of its surface, melting and kneading them at 180-320 deg.C substantially in the absence of water, and finely pulverizing the coating film by decomposing reaction. A method for regenerating the form comprises the steps of again melting and molding it.