Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Including application of internal fluid pressure to hollow...
Patent
1999-04-21
2000-11-07
Davis, Robert
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Including application of internal fluid pressure to hollow...
264532, 425526, 425529, B29C 4966
Patent
active
061432342
ABSTRACT:
An improvement for a stretch blow molding apparatus, including a cryogenic liquid pulse pump disposed in sealed fluid connection between a cryogenic liquid reservoir and a stretch blow molding machine, a subcooler connected between the reservoir and the pulse pump for supplying cryogenic liquid at a preselected temperature, a vacuum jacket casing disposed generally surrounding a stretch blow rod, the reservoir, and the pulse pump for preventing vaporization of cryogenic liquid prior to delivery into a container, and control means for controlling the pulse pump to deliver a preselected amount of cryogenic liquid into the container through the stretch rod during a predetermined time interval beginning at a preselected time after formation of the container.
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Davis Craig P.
Van Horn Norm
Vaughn Michael
Ball Corporation
Davis Robert
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