초록 ▼

This relates to the formation of wide mouth bottles and jars for receiving a hot fill product where the jars and bottles are formed of a suitable polyester such as PET. The bottle or jar is initially formed as part of an intermediate article including an upper adapter portion which is reusable so th

This relates to the formation of wide mouth bottles and jars for receiving a hot fill product where the jars and bottles are formed of a suitable polyester such as PET. The bottle or jar is initially formed as part of an intermediate article including an upper adapter portion which is reusable so that substantially all of the resultant bottle and jar, particularly the neck finish thereof is biaxially oriented. The intermediate article is formed from a preform which is blow molded within a conventional type of blow mold. In the reheating of the preform, that portion of the preform which becomes the neck finish of the bottle or jar is heated to a higher temperature than the remainder of the preform and to a temperature wherein thermal crystallization in addition to strain crystallization occurs. This results in the neck finish having a higher density than other portions of the bottle or jar and being more resistant to shrinkage during hot filling.

대표청구항 ▼

A polyester container comprising a body terminating in a large diameter mouth, said mouth having a diameter generally approaching the diameter of said body, said mouth being defined by a neck finish of the type for releasably receiving a closure, said neck finish being biaxially oriented, and said n

A polyester container comprising a body terminating in a large diameter mouth, said mouth having a diameter generally approaching the diameter of said body, said mouth being defined by a neck finish of the type for releasably receiving a closure, said neck finish being biaxially oriented, and said neck finish having a greater density than said body to provide a diameter reduction when the container is hot filled that is materially less than that of said body.