Abstract: The invention relates to a method for sealing an opening of a packaging, in which the packaging includes at least a peripheral wall with a peripheral top edge.

Abstract: A method for closing an opening in a container for food products, such as a tray or jar, has the processing steps of: A) arranging a flexible foil layer over the opening which protrudes outside the edge of the opening; B) urging the protruding part of the foil layer against the outer side of the container; and C) attaching the foil layer to the container. A packaging may also be manufactured using this method.

Abstract: The invention relates to a method for closing an opening in a container for food products, such as a tray or jar, comprising the processing steps of: A) arranging a flexible foil layer over the opening which protrudes outside the edge of the opening; and B) urging the overhanging part of the foil layer against the outer side of the container; and C) attaching the foil layer to the container. The invention also relates to a thus manufactured packaging.

Abstract: The invention relates to a package for containing a plurality of products for heating, comprising: a container, manufactured from a material for once-only use, provided with at least two compartments shielded from the environment, and at least one passage opening arranged in the package for a medium for reducing an overpressure in the package, wherein the pressure in the compartments can be maintained at different levels. The invention further relates to a method for heating a plurality of products for heating placed in a single container to different temperatures using a heating source.