Method of blow molding an all plastic drum and compression...

B - Operations – Transporting – 65 – D

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18/509

B65D 25/22 (2006.01) B65D 1/16 (2006.01)

Patent

CA 1110022

METHOD OF BLOW MOLDING AN ALL PLASTIC DRUM AND COMPRESSION MOLDING A PROJECTION THEREON ABSTRACT OF THE DISCLOSURE An all plastic tubular drum is blow molded into the selected configuration from an extruded parison. The parison is provided with at least two spaced circumferentially ex- tending thickened sections. These thickened sections are captured in a compression mold cavity during the blow molding cycle. Thereafter the captured thickened sections are com- pression molded into outwardly extending projections, under- cuts, reinforcing gussets, or the like. -1-

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