Method of forming multi-layer preform and container with low cry

Details Method of forming multi-layer preform and container with low cry Method of forming multi-layer preform and container with low cry

1998-06-01

2000-07-18

Williamson, Michael A.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 3692, 428 357, 428 366, 428 367, 428 389, 215 1C, B65D 102

Patent

active

060904607

ABSTRACT:
A method of forming a multi-layer polyester preform and container, particularly suitable for refillable PET carbonated beverage bottles, having an interior layer of high copolymer polyester material which resists hazing in the preform injection stage, and at least one exterior layer of a polyester to achieve enhanced strain-induced crystallization in the exterior layer during blow molding. The container can withstand higher caustic wash temperatures and exhibits reduced flavor carryover from one product to another.

REFERENCES:
patent: 4398017 (1983-08-01), Go
patent: 4564541 (1986-01-01), Taira et al.
patent: 4618386 (1986-10-01), Yatsu et al.
patent: 4713269 (1987-12-01), Jabarin et al.
patent: 4734335 (1988-03-01), Monzer
patent: 5191987 (1993-03-01), Niimi et al.

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