PROTECTED EXPANDED POLYALKYLIDENE TEREPHTHALATES

摘要

The present invention relates to a material comprising an expanded polyalkylidene terephthalate based laver (A) being covered with at least one outer layer (B) comprising at least 50 weight-% of a solvent (including water) soluble inorganic chalkogene based compound, i.e. an easy-to-apply, but versatile method for significantly improving the fire retardant, anti-hydrolytic and mounting/coating properties of expanded polyalkylidene terephthalate polyester products by cold coating of the surface layer(s) of said foams and sponges, the manufacturing of such products and the use of such products.