Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Rod or tubular preform
Patent
1980-08-25
1982-06-29
Silbaugh, Jan H.
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Rod or tubular preform
264523, 264525, 264540, 425182, 425195, 425524, 425525, B29C 1707
Patent
active
043370250
ABSTRACT:
A mold assembly is provided for making a thermoplastic container having a bottom, side and unitary closure or top wall means with a parting line along a plane of symmetry in the bottom and sidewall means but with the parting line offset on the top wall means to define a generally flat, pierceable membrane on a major portion of the exterior surface of the top wall means. The mold assembly molds and seals the container from a tube of thermoplastic material, which assembly includes mold parts having lower sections adapted to open and close relative to a center parting plane to shape the bottom and sidewall means of the container and having a pair of upper sections adapted to shape the unitary closure. One of the upper sections has a removable protuberance for forming a major portion of the container top closure surface with the mold parting line thereon offset relative to the center parting plane of the mold assembly.
REFERENCES:
patent: 3423495 (1969-01-01), Bachner
patent: 4082827 (1978-04-01), Chlyston
Nagel Dieter H.
Pagels Louis T.
Automatic Liquid Packaging, Inc.
Silbaugh Jan H.
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