Apparatus for expanding sealing a laminated plastic preform

Plastic article or earthenware shaping or treating: apparatus – Preform assembly means and means for bonding of plural... – Reshaping means utilizing fluid pressure directly contacting...

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Details

425387B, 425388, B29C 1704

Patent

active

039828778

ABSTRACT:
Apparatus is disclosed for making a hollow, rib-reinforced article from a composite preform of two thermoplastic sheets. One sheet has a pattern of ridges or grooves, on a surface which contacts the other sheet, to permit the free flow of fluid from a marginal edge to interior regions of the preform. The apparatus includes (1) a heater, (2) mold platens which include a rib-forming mold cavity, (3) a ram to close and hold the mold platen in contact with the composite preform, and (4) a manifold which supplies a pressurized fluid to a marginal edge of the preform, thereby distending the thermoplastic sheet into the mold cavity. Then, the ram is further closed to seal nondistended areas of the preform, forming a hollow, laminated article.

REFERENCES:
patent: 2991500 (1961-07-01), Hagen
patent: 3099043 (1963-07-01), Held
patent: 3242245 (1966-03-01), Greig et al.
patent: 3271846 (1966-09-01), Buecheze et al.
patent: 3281301 (1966-10-01), Bolesky
patent: 3289281 (1966-12-01), Agin et al.
patent: 3394446 (1968-07-01), Valyi
patent: 3396430 (1968-08-01), Westcott
patent: 3444034 (1969-05-01), Hewett
patent: 3537138 (1970-11-01), Brown et al.
patent: 3655849 (1972-04-01), Hayashi
patent: 3783078 (1974-01-01), Brodhead

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