Packaging method and apparatus

Details Packaging method and apparatus Packaging method and apparatus

1990-09-20

1991-09-03

Culver, Horace M.

Package making

Methods

With contents treating

53442, 53512, 53557, B65B 5306, B65B 3102

Patent

active

050441426

ABSTRACT:
A package is steam-shrunk while subjected to a substantially constant sub-atmospheric pressure generated by a suction fan 22 operating at the same time as a steam generator 13 maintaining the prevailing pressure within a chamber interior 20 at sub-atmospheric pressure in the presence of steam. The low pressure of the steam ensures that its temperature is well below the boiling point of water and avoids thermal damage to the material of a container 12 being shrunk.

REFERENCES:
patent: 4164111 (1979-08-01), Di Bernardo
patent: 4204379 (1980-05-01), Mugnai et al.
patent: 4236672 (1980-12-01), Koeberle
patent: 4418512 (1983-12-01), Johnson
patent: 4457122 (1984-07-01), Atkins et al.
patent: 4471599 (1984-09-01), Mugnai
patent: 4541224 (1985-09-01), Mugnai
patent: 4545177 (1985-10-01), Day
patent: 4550548 (1985-11-01), Owensby et al.
patent: 4567713 (1986-02-01), Natterer

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