Abstract: A packaging container which includes a synthetic resin container body having a flange part and the cover member heat-sealed to the flange part of the container body. The cover member includes (1) an upper member in which inner surfaces of resin films are positioned opposite to each other to form an abutted part, an unsealed part communicating with the inside of the container body is formed by heat-sealing a peripheral edge part of the abutted part excluding one side of the abutted part forming a base part, and the steam releasing seal part is formed at the abutted part and (2) a lower member which covers a lower surface of the upper member and in which a steam guide part communicating with the inside of the container body is formed at or near the base part of the abutted part.

Abstract: A packaging container for cooking by an electronic oven having high sealability between a container body and a cover member and capable of being automatically and securely opened starting at a steam releasing seal part after taste of contents is improved by a steaming effect by holding a pressure in the packaging container for a specified time when the contents are heated and cooked by the electronic oven. The packaging container comprises a synthetic resin container body having a flange part and the cover member heat-sealed to the flange part of the container body.

Abstract: An inert gas substitution method comprising blowing an inert gas into a container in the state wherein an opening of a container is covered with an inert gas substitution apparatus (5, 20) having an inert gas blow opening (7, 30), thereby substituting the inert gas within the container, and after substitution, covering the opening of the container with a cover material film (15). An inert gas substitution apparatus (5) formed with an inert gas blow opening (7) and having a plate of which bottom surface is flat. An inert gas substitution apparatus (20) having a chamber (21) of which bottom surface is open, the chamber (21) covering an opening of a container to blow an inert gas into the container.

Abstract: An improved bag-shaped container with a straw insert hole formed thereon is disclosed. The straw insert hole extends through the body of the container and two sealing pieces are adhered to the inner surface of the body to fully close the straw insert hole. Further, a tab is disposed on the outer surface of the body to fully cover the straw insert hole. When an user wants to take the content out of the container, he first peels the tab and then causes a straw to pierce through the second sealing piece until its foremost end part is inserted into the interior of the container. Thus, he is ready to suck the content in the container. To facilitate piercing of the foremost end part of the straw the sealing piece is formed with a small hole or a weakened portion in the form of score.

Abstract: The apparatus comprises a sealed chamber including a sterilizing section, a cooling section and a conveyor including carrier receivers and circulated through the sterilizing and cooling sections. The flat flexible packages containing substances to be sterilized are contained in rotatable carriers. With one side of the sealed chamber is provided a sealing means through which the carriers are charged and discharged into and out of the sealed chamber.