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Title:
RETORT STERILIZATION METHOD
Document Type and Number:
Japanese Patent JP2596866
Kind Code:
B2
Abstract:

PURPOSE: To prevent the rupture of a packaging bag and the damage of an expanded bag contacting with a supporting member by using a specific method to prevent the generation of large pressure difference between the inner pressure of a soft packaging bag and the pressure in a sterilization tank during the cooling stage.
CONSTITUTION: A sterilization object filled in a soft packaging bag is subjected to a pressure thermal sterilization treatment. When the sterilization is almost finished, the pressure in the sterilization tank is made to be higher than the sterilization pressure preferably by 0.2-0.4kg/cm2. Finally, the sterilization tank is cooled while keeping the pressure in the sterilization tank to a level not to cause the rupture of the filled soft packaging bag even by the abrupt decrease of the pressure in the sterilization tank by cooling. The air content in the filled soft packaging bag is maintained preferably to 3-10%.


Inventors:
Hirobe Takumi
Mochizuki Masaharu
Application Number:
JP33230491A
Publication Date:
April 02, 1997
Filing Date:
December 16, 1991
Export Citation:
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Assignee:
House Foods Co., Ltd.
International Classes:
A23L3/00; A23L3/005; A23L3/015; A23L3/10; (IPC1-7): A23L3/015; A23L3/00; A23L3/10
Domestic Patent References:
JP3247262A
JP63154177A
JP6163271A
JP3247262A
Attorney, Agent or Firm:
Minoru Nakamura (7 outside)