Laminates and their use in making containers.

摘要

A laminate of layers of polyethylene terephthalate and of a polyester derived from a dicarboxylic acid component comprising more than 20 mol % isophthalic acid and a glycol component comprising principally ethylene glycol. Preferably, a polyethylene terephthalate layer is biaxially-oriented. Such a laminate can have low gas-permeability. By blow-moulding with biaxial orientation, a preform of such a laminate can be made into, say, a bottle having good impact strength.