Method for preserving cooked food and vacuum sealed preservation container therefor

Abstract

A vacuum sealed preservation container comprises a container main body and a lid made of a synthetic resin which is heat resistant and cold resistant and has microwave permeability, in which the lid has on the upper surface thereof a check valve constituted such that gases in the container flow out only in one direction to the outside of the container through a vent hole and a packing mounted in a packing case disposed in contiguous with the circumferential edge thereof, and the container is constituted such that the lid and the container main body are in airtight contact with each other by way of the packing. When cooked foods are filled in the container main body of the container and heated for a predetermined period of time with the lid being covered in a microwave oven, the foods are heated rapidly from the inside to generate steam, and air in the container is expanded and discharged together with the steam to the outside, upon which the foods and the gases are sterilized simultaneously, the container is taken out after completion of heating, sealed by immediately pressing the lid, and the container and the foods are cooled, then high vacuum is attained inside the container to increase the sealing force of the container, so that the foods can be preserved safely.

Dependencies are inferred from the claim text.