Method for manufacturing heat resistant PET containers

Details Method for manufacturing heat resistant PET containers Method for manufacturing heat resistant PET containers

1986-10-31

1989-06-06

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Differential temperature conditioning

264530, 264532, 264342R, B29C 4906, B29C 4918, B29C 4964

Patent

active

048369713

ABSTRACT:
A heat resistant container is made from a PET preform by crystallizing its neck (10), heating just its body to the softening temperature of PET, blow molding an intermediate container (21) in a cooled mold (5.degree. to 40.degree. C.) with a larger volume than that of the final container to be obtained, heating the intermediate container to 180.degree.-220.degree. C. for 1 to 15 min, and then molding it a second time to its final dimensions at a temperature of 80.degree.-100.degree. C. for 2 to 6 sec.

REFERENCES:
patent: 4177239 (1979-12-01), Gittner et al.
patent: 4375442 (1983-03-01), Ota et al.
patent: 4385089 (1983-05-01), Bonnebat et al.
patent: 4512948 (1985-04-01), Jabarin

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