Patent ID: 8262987

Claim:
A sterilizing method for retorted products, the method comprising steps of: providing one or more carriages, on which retorted products are placed, within a retort; sliding the one or more carriages within the retort while carrying out heat sterilization processing on the retorted products; transmitting driving forces of at least one drive source installed outside to a leftward or rightward side of the retort to the carriages after being converted to reciprocal motion, wherein the sliding occurs reciprocally at a preset prescribed cycle in forward and backward or leftward and rightward directions of the retort, and changing a sliding frequency of the carriages when raising the ambient temperature, sterilizing and lowering the ambient temperature within the retort during the present prescribed cycle of the heat sterilization processing, wherein the carriages are reciprocally slid at a maximum frequency when the ambient temperature has reached a sterilization temperature.