REUTILIZATION OF BARRIER POLYSTYRENE FOAM SCRAP AND BARRIER POLYSTYRENE FOAM CONTAINING REUTILIZED BARRIER POLYSTYRENE FOAM SCRAP

摘要

PURPOSE: To provide a barrier foam tray containing a recycled reclaim of a barrier foam by constituting it of other gas barrier substance without using a vinylidene chloride copolymer to become an obstruction for recycling use and a method for recycling it. CONSTITUTION: A barrier foam tray contains a recycled reclaim of a barrier foam. The tray comprises a sheet of foamed polystyrene(PS) having laminated to it a flexible barrier film. The foamed polystyrene part can have admixed therein from 0.0001 to up to 30% by weight of the flexible barrier film. The barrier film contains a barrier polymer such as ethylene vinyl alcohol copolymer (EVHO). The tray is mode by grinding laminate scrap and extruding reclaim therefrom with virgin polyester.