Blow-molded bottle-shaped container of biaxially oriented polyet

Details Blow-molded bottle-shaped container of biaxially oriented polyet Blow-molded bottle-shaped container of biaxially oriented polyet

1985-09-05

1986-05-20

Price, William

Bottles and jars

Ejecting

Siphon type

215 31, 264 25, 264235, 264346, 264521, 264537, B65D 2300, B65D 102, B29C 4908, B29C 4964

Patent

active

045895597

ABSTRACT:
A hollow blow-molded bottle-shaped container of a biaxially oriented polyethylene terephthalate which advantageously has a crystallized outer peripheral portion at the neck portion except the boundary between the neck portion and the body portion and non-crystallized inner peripheral portion thereat. This bottle-shaped container is molded by a method of molding the same, which method advantageously has the steps of injection-molding a piece or parison formed at the outer peripheral surface of a neck root part forming portion in a downwardly flared tapered shape, and crystallizing by a heat treatment the outer peripheral surface portion of the neck root part forming portion. Thus, the deterioration in the physical properties of the neck and shoulder portions of the bottle-shaped container thus finally blow-molded can be reduced.

REFERENCES:
patent: 4164298 (1979-08-01), Nishikawa et al.
patent: 4233022 (1980-11-01), Brady et al.
patent: 4288478 (1981-09-01), Kinoshita et al.
patent: 4379099 (1983-04-01), Ota et al.

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