Walking beam shrink tunnel apparatus

Details Walking beam shrink tunnel apparatus Walking beam shrink tunnel apparatus

1977-07-11

1980-04-15

Reynolds, Bruce A.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219348, 219349, 198774, 432 11, 432239, F27D 312

Patent

active

041985605

ABSTRACT:
A walking beam shrink tunnel apparatus for sealing plastic film wrapped on an article, as the article is transported through a heat tunnel surrounding a portion of a walking beam type conveyor, a pair of heating elements located upwardly of the heat tunnel, and being adjustably set through temperature control means for regulating the radiant heat emanating from the elements, heat seals the film wrapped article; the walking beam type conveyor comprising alternately arranged stationary and walking beams, the latter being movably supported upon a base that operates to shift the walking beams in a substantially elliptical pattern for affecting movement of the film wrapped articles along the conveyor and through the arranged heat tunnel.

REFERENCES:
patent: 1675948 (1928-06-01), McKee
patent: 1675949 (1928-07-01), McKee
patent: 1942538 (1934-01-01), Cutler
patent: 2057367 (1936-10-01), Cone
patent: 2497768 (1950-02-01), Hallead
patent: 3600553 (1971-08-01), Costello
patent: 3711957 (1973-01-01), Carver, Jr.
patent: 3721804 (1973-03-01), Feldman
patent: 3818182 (1974-06-01), Linde
patent: 3894343 (1975-07-01), Pray et al.
patent: 3915441 (1975-10-01), Matsukawa et al.
patent: 4015340 (1977-04-01), Treleven

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