B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/535
B29C 49/12 (2006.01) B29C 49/36 (2006.01) B29C 49/42 (2006.01)
Patent
CA 1066009
APPLICATION FOR LETTERS PATENT FOR METHOD AND APPARATUS FOR CONTINUOUS STRETCH-BLOW MOLDING ABSTRACT OF THE DISCLOSURE Apparatus for continuously forming molecularly oriented articles generally comprising a multi-station rotary stretch-blow molding machine wherein a plurality of partible blow molds angularly spaced about a continuously rotating support are provided with mold moving means for moving the mold sections of said molds between open and closed positions in synchronization with rotation of said support, stretch rod positioning means to longi- tudinally reciprocate a stretch rod within a cavity of each of said molds and second stretch rod positioning means for projecting the rod into the cavity and retracting it therefrom, said stretch rod positioning means being operable in combination and in synchronization with said mold movements. Another feature of this invention involves means for continuously and simultaneously feeding workpieces to and discharging articles from a stretch-blow mold machine. From a process standpoint, the workpiece, while at molecular orientation temperature, is held temporarily or stored at each moving mold while an article is being formed in the cavity of such mold from a prior preform. .
248354
Reilly Joseph R.
Witkowski Leonard J.
Monsanto Company
Na
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