Heating apparatus for packaging materials utilizing heated air r

Details Heating apparatus for packaging materials utilizing heated air r Heating apparatus for packaging materials utilizing heated air r

1990-10-31

1992-10-13

Reynolds, Bruce A.

Electric resistance heating devices

Heating devices

Continuous flow type fluid heater

392379, 392382, 53557, 533707, 156497, B65B 5120, B65B 5306

Patent

active

051557991

ABSTRACT:
A heating apparatus for heating thermoplastic packaging materials to allow the materials to be heat-sealed, formed, or reformed includes two nozzles which supply heated air to the packaging materials, a suction box which sucks the heated air away from the packaging materials after the air has heated the materials, and a recirculation duct which recirculates the heated air from the suction box back to an intake of the nozzles.

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