Apparatus for the thermal densification of thermoplastic article

Details Apparatus for the thermal densification of thermoplastic article Apparatus for the thermal densification of thermoplastic article

1995-09-26

1997-07-08

Kuhns, Allan R.

Plastic article or earthenware shaping or treating: apparatus

Including ventilating type hood or chamber encasing a...

425135, 425144, 425445, 2221462, B29C 3502

Patent

active

056458622

ABSTRACT:
An apparatus for thermally densifying thermoplastic articles, particularly those of the expendable type. The apparatus includes a thermally insulated cabinet having mounted within a two-section hopper and a convection heating system. The apparatus is adapted for heating the thermoplastic articles placed within the chamber to a temperature effective for the thermal densification of the thermoplastic articles. The convection heating system creates a circulating air flow between the hopper and the cabinet walls. The air flow insulates the hot hopper from the apparatus cabinet and densifies the thermoplastic articles. The apparatus also renders any food particles in or on the thermoplastic articles bacterially inert.

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patent: 5470521 (1995-11-01), Wenzel et al.
patent: 5489200 (1996-02-01), McGraw et al.

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