Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Differential temperature conditioning
Reexamination Certificate
2005-07-25
2010-11-16
Nordmeyer, Patricia L (Department: 1783)
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Differential temperature conditioning
C264S530000, C264S906000, C425S526000, C425S525000, C164S034000, C220S319000, C428S035700, C428S034900
Reexamination Certificate
active
07833467
ABSTRACT:
A polyester container obtained by stretch-forming a preform of a thermoplastic polyester resin formed by injection forming wherein the central portion of the bottom wall is the remaining part of the gate at the time of injection forming, and is formed relatively thicker than the bottom wall surrounding the central portion, and the central portion of the bottom wall is substantially amorphous, and the bottom wall surrounding the central portion is oriented and crystallized. The container exhibits excellent heat resistance and shock resistance despite a thick portion that is the remaining portion of the injection gate is formed at the center of the bottom portion.
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Hosokai Taku
Iwamoto Hisao
Iwasaki Tsutomu
Sakaguchi Toshiki
Suenaga Ryo
Nelson Michael B
Nordmeyer Patricia L
Sughrue & Mion, PLLC
Toyo Seikan Kaisha Ltd.
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