Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Forming plural articles
Patent
1996-08-07
1998-06-16
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Forming plural articles
264322, 264334, 264553, 425438, 425443, 425DIG58, B29C 5110, B29C 5134
Patent
active
057665362
ABSTRACT:
An apparatus and method for forming thermoplastic containers having a male locking member. The apparatus includes a cavity defining a shape of the container, a stripper movable in a longitudinal direction relative to said cavity, and a retractable lock adjacent to an edge of the cavity. The retractable lock is movable in a transverse direction relative to the cavity between a retracted position and an unretracted position and movable in a longitudinal direction between a first position and a second position. The containers are formed through a process in which the apparatus is sequentially placed in a ready mode, lift mode, disengage mode, and back to the ready mode. In the ready mode, the retractable lock is placed in the unretracted position and first position in order to receive a sheet of plastic material and form a locking member thereon. In the lift mode, the retractable lock is moved in a longitudinal direction from the first position to the second position in order to lift the container from the cavity. In the disengage mode, the retractable lock is moved in a transverse direction from the unretracted position to the retracted position in order to disengage itself from the locking member.
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Eashoo Mark
Silbaugh Jan H.
Tenneco Packaging
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