B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/52
B29D 23/00 (2006.01) B29C 45/26 (2006.01) B65D 43/02 (2006.01)
Patent
CA 1057920
ABSTRACT OF THE DISCLOSURE This invention provides an apparatus and method for molding plastic covers for containers particularly for containers having a pair of spaced circumferential ribs between which a tear off strip of the cover is engaged. The molding apparatus includes a stationary die section, including a fixed die member having a molding surface shaped to form a portion for the mold correspond- ing to the outer surface of the side of the cover, a movable die section including a plurality of movable die members, at least one of the movable die members being slidingly engaged within said stationary die member, a means for moving the plurality of movable die members in an axial direction between the closed and open positions of the molding apparatus, and a means for con- trolling the disengagement of the individual die members from the molded plastic cover whereby the fixed die member is first disengaged prior to the plurality of movable die members being sequentially disengaged from the cover.
233739
Beck Reinhold
Ruch Heinz
Albert Obrist Ag
Na
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