Drying and gas or vapor contact with solids – Apparatus – Houses – kilns – and containers
Patent
1995-03-28
1996-08-20
Larson, James
Drying and gas or vapor contact with solids
Apparatus
Houses, kilns, and containers
34218, 53442, 53557, F26B 700, B65B 5306
Patent
active
055466770
ABSTRACT:
The apparatus and method of the invention provide a heat source adapted to direct heated air for shrinking a heat-shrinkable film wrapped around a package primarily to end seams of the package to avoid discoloration and distortion of printed central portions of film. The package is received by the apparatus with the end seams oriented transverse to the direction of travel. An arcuate conveyor section rotates the package 90.degree. and onto a shrink tunnel conveyor. A pair of upwardly directed long nozzles which are oriented parallel to the travel direction of the shrink tunnel conveyor blow hot air at the end seams only, leaving the top and bottom central film portions to shrink slowly by contact with warm ambient air in the tunnel.
REFERENCES:
patent: 3309835 (1967-03-01), Peppler
patent: 3534393 (1970-10-01), Bickham et al.
patent: 3727324 (1973-04-01), Melgaard
patent: 3777446 (1973-12-01), Graver
patent: 3999357 (1976-12-01), Marantz
patent: 5062217 (1991-11-01), Tolson
patent: 5193290 (1993-03-01), Tolson
patent: 5329745 (1994-07-01), Suga
patent: 5398427 (1995-03-01), Tolson
patent: 5421139 (1995-06-01), Tolson
Ibaraki Seiki Machinery Co., Ltd.
Larson James
Ossid Corporation
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