Patent ID: 6472035
Filing Date: 2002-10-29
Classification: B32B,C08J,Y10T

Abstract:
A mono- or biaxially-stretched foamed sheet made from an aromatic polyester resin selected from the group consisting of copolyethylene terephthalates containing from 2 to 20 moles % of isophthalic acid and/or naphthalene dicarboxylic acids, suitable for the production of beverages and food containers, having a density lower than kg/m3 and having creased on it a patter which by folding along creased lines will develop the shape of a container, wherein the crystallization rate of he resin is such that, by heating at 120Â° C. for 5 minutes, the crystallization does not exceed 15%, said sheet being stretched with a ratio of from 1:1 to 5:1.