LEACHING CONTAMINANTS FROM POST-CONSUMER POLYESTER FOR REUSE IN FOOD-CONTACT APPLICATIONS

摘要

A novel technique to treat post-consumer polyester for reuse in food-contact applications is described. The process comprises contacting contaminated postconsumer polyester flake with at least one extraction solvent which is soluble in said contaminated flake at a temperature sufficient to allow rapid diffusion of contaminants from said polyester flake; and removing said extraction solvent containing said contaminants from said polyester flake.