Apparatus and method useful in manufacture of two piece cups
AssigneeAmoco Corporation
InventorsRobin A. Gilmer, Charles B. Green
Life of this patent
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Abstract
An improved heating method and heating nozzle useful in the forming of a two-piece thermoplastic foam cup assembled from two thermoplastic foam pieces on a cup-forming turret machine. The method and apparatus of the invention prevent premature sticking of the foam bottom piece to the foam sidewall piece and result in better sealing of the foam bottom to the sidewall.
Claims9
An apparatus for heating the bottom wall during the manufacture of a two-piece cup having a circumferential sidewall and a recessed bottom wall having a juncture formed from a bottom wall blank and a flange portion of the bottom wall blank wherein the apparatus comprises:
- a heating nozzle having a central axis and comprising (i) a top face and (ii) at least one heating gas flow channel having a gas exit for directing a heating gas stream primarily adjacent the juncture of said recessed bottom wall.
Dependencies are inferred from the claim text.