Package making – Methods
Patent
1982-11-12
1985-03-12
Spruill, Robert L.
Package making
Methods
53425, 53167, B65B 5500
Patent
active
045036560
ABSTRACT:
This relates to starting up of a machine wherein a thermoformable web forms bottom of a sterile chamber in the machine and wherein it is necessary to sterilize all of the interior of the machine including forming and filling equipment as well as heating equipment. It has been deemed advisable to use as a sterilizing agent super-heated air. However, the temperature of the sterilizing air is above the melt temperature of the thermoformable web which normally forms the bottom closure for the sterile chamber. This problem is solved by providing a setup arrangement wherein the bottom of the sterile chamber is formed by a heat resistant web and wherein the thermoformable base web and an associated closure web are so related to the heat resistant web that once sterilization of the components within the sterile chamber has been achieved sterility may be maintained by the mere introduction of sterile air and the heat resistant web may be fed from the machine while introducing the thermoformable web for machine operation thereon.
REFERENCES:
patent: 3911640 (1975-10-01), Rausing
patent: 4045943 (1977-09-01), Baumstingl
patent: 4287702 (1981-09-01), Corbic
Brown Charles E.
Mudd Richard M.
Societe Anonyme dite: Etude et Realisation de Chaines Automatiqu
Spruill Robert L.
LandOfFree
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