Parison and method for forming parisons for biaxial orientation

Details Parison and method for forming parisons for biaxial orientation Parison and method for forming parisons for biaxial orientation

1979-09-18

1981-09-08

Silbaugh, Jan H.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

215 1C, 264503, 264312, 428 36, 428542, 428910, B65D 100, B29C 1707, B29D 2302

Patent

active

042884780

ABSTRACT:
Bottles made of saturated polyester resin, particularly polyethylene terephthalate resin, by orientation blow molding exhibit phenomenal properties and characteristics, but suffer from a serious disadvantage in that the bottle neck is greatly inferior in the properties and characteristics to the bottle body, because the neck is molded into the final form without undergoing biaxial orientation. Biaxial orientation gives the bottle body outstanding properties and performance because it causes the molecules of a molding resin material to be arranged in the same direction. Based on this principle, the bottle neck is given the same effect as is produced with biaxial orientation by applying tensile force in a certain direction to the molecules of a molding resin material while it is still in a temperature range at which orientation takes place.

REFERENCES:
patent: 3288898 (1966-11-01), West
patent: 3307726 (1967-03-01), Cleereman et al.
patent: 3949033 (1976-04-01), Uhlig
patent: 4122138 (1978-10-01), Cleereman et al.

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