Importance

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Abstract

Co-processable multi-layer laminates having a high T.sub.g layer and at least one low T.sub.g layer with layers having properties of high strength, lo- or no-haze, and transparency after processing into various multi-layer forms are useful for packaging and container applications. The multi-layer laminate has at least one low T.sub.g layer of a first thermoplastic polyester having at least one crystallization rate inhibitor. The total amount of crystallization rate inhibitor is effective to prevent substantial haze in the low T.sub.g layer upon heating. In most applications, the total amount of crystallization rate inhibitor also does not substantially inhibit strain-induced crystallization of the at least one low T.sub.g layer when the laminate is stretched during processing. The multi-layer laminates of the invention have improved properties such as reduced shrinkage and/or high barrier properties, with a very small amount of high T.sub.g material used to impart these improved properties to the laminate.

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First Claim