Blow molding devices

Details Blow molding devices Blow molding devices

B - Operations, Transporting

29

D

18/537

B29D 23/03 (1980.01)

Patent

CA 1139913

ABSTRACT OF THE DISCLOSURE A blow molding device for forming a blown plastic article from an elongated essentially tubular parison has a sectional blow mold defining a cavity, inner surfaces of said mold defining a bore for forming an article neck forming portion of said mold, a rib on said bore defines surfaces for forming an inner annular rib in said neck portion o-F said article, pinch-off areas in sections of said mold and notches in said mold adjacent said rib on said bore defining surfaces and in said pinch-off areas for receiving material from said parison so as to form a continuously smooth innermost surface on said annular rib of said blown plastic article. This invention is distinguishable from others by the arrangement of the notches in the pinch off areas of said mold adjacent said rib on said bore to receive extra material from said parison.

353271

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