Graded crystallization of container finishes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
May 25, 2006
app pub date -
Jan 11, 2006
filing date -
Apr 12, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A container, a container preform and a method of making the container or preform in which the finish of the preform or container is at least partially of crystallizable polymer construction, and has an end portion remote from the body of the preform or container, a capping flange adjacent to the body of the preform or container, and a mid portion between the end portion and the capping flange. The end portion of the finish forms an end surface, and the end and mid portions of the finish form continuous inner and outer surfaces. The polymer material in at least one of the end, inner and outer surfaces is crystallized, and crystallization in the finish in a direction perpendicular to such surface is graded from crystallization at the surface to an essential absence of crystallization at a position within the finish spaced from the surface.
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