Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1976-01-22
1977-10-18
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264327, 425526, 425530, 425533, B29C 1707
Patent
active
040546292
ABSTRACT:
Parisons are injection molded using a cooled cavity and a relatively hot core pin to prevent the formation of residual internal stress in or near the inner surface of the parison. The parison is promptly transferred while still hot from the injection mold to a temperature conditioning station to provide a desired temperature distribution and the temperature conditioned parison is highly molecularly biaxially oriented as it is blow molded.
REFERENCES:
patent: 2331702 (1943-10-01), Kopitke
patent: 3934743 (1976-01-01), McChesney
patent: 3944643 (1976-03-01), Sato et al.
patent: 3963399 (1976-06-01), Zavasnik
Belivakici Ilie Mila
Wang James Chi-Hwi
Young Robert Richard
American Can Company
Auber Robert P.
Bock James W.
Silbaugh Jan H.
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