METHOD FOR RECYCLING WASTE MATERIAL OF FLEXIBLE CONTAINER INTO MOLDED PRODUCT, AND GRANULAR RECYCLED MOLDING MATERIAL BASED ON WASTE MATERIAL OF FLEXIBLE CONTAINER AS RAW MATERIAL

摘要

PPROBLEM TO BE SOLVED: To provide a method for recycling a waste material of a flexible container into a molded product through a molding process by a molding machine using a molten material obtained by grinding a flexible container to the particle diameter of 10 mm or less and thermally melting the grinds with the help of an extruder, and a granular recycled molding material, based on the waste material of the flexible container, which is obtained by crushing the flexible container to the particle diameter of 10 mm or less, then compressing the crushed material and melting part of the crushed material by frictional heat during crushing, with further procedures to cut and granulate the molten product. PSOLUTION: This method achieves the recycling of the flexible container which is conventionally regarded as difficult because of the fact that an ethylene-vinyl acetate copolymer is fusion-bonded to a polyester fiber or the flexible container is formed of materials with different melt indices or the interface between a main body cloth and a lining cloth is welded by a high frequency welder. In addition, in this method, the process to separate/sort out the waste material of the flexible container is not necessary and the waste material can be used for a granular recycled molding material for injection-molding. PCOPYRIGHT: (C)2003,JPO