Provided is a container with which a width and a position of a lid member to be unsealed can be readily made constant, thus making it less likely for contents to be discharged too vigorously and making it easy to predict the discharging direction of the contents. A container body and a lid member of the container body are sealed to each other via an annular seal portion formed along a flanged face of the opening. At a specified position of the annular seal portion, there is provided a detaching seal portion which is to be detached in response to increase of an inside pressure of the container body associated with deformation of the container body based on an external force. At positions facing each other across the detaching seal portion, there are provided non-detaching seal portions comprised of a plurality of annular seal portions extending along a circumferential direction.

Provided is a portion container whose detaching seal portion can be easily detached by a stress applied from a radial inner side based on an inside pressure of a container body, but can be hardly detached by a stress applied from the outside during distribution. Provided also are a seal head for sealing such container and a container sealed with using such seal head. The seal head includes pressing end portions for pressing a lid member against a flange of an opening. At least a portion of the pressing end portions is formed as an uneven projecting portion having different curvature radii in its cross sectional contour between a radial inner portion and a radial outer portion of the opening.

A package includes a container, a closure, and a peelable film for mating on the brim of the container. The peelable film is hermetically sealed to the container brim at a factory. The seal is broken the first time a consumer removes the peelable film from the container brim.

A package includes a container and a closure for mating on the brim of the container. The closure is hermetically sealed to the container brim at a factory. The seal is broken the first time a consumer removes the closure from the container brim.

A peelable lid system includes a peelable lid, a seal configured to seal the peelable lid to a container, a handle coupled to the peelable lid, and a lifting mechanism coupled to handle. The lifting mechanism can be coupled to the peelable lid at a plurality of attachment points, including at least one attachment point coupled to the peelable lid away from the handle. The lifting mechanism can be configured to lift at least one portion of the peelable lid near each of the plurality of attachment points.

The objective is to provide a container for microwave oven and a package for microwave oven in which a clearance which is formed between a flanged portion and a lid material and a content may enter is made narrower while maintaining automatic vapor discharge function.

A peelable lid system includes a peelable lid, a seal configured to seal the peelable lid to a container, a handle coupled to the peelable lid, and a lifting mechanism coupled to handle. The lifting mechanism can be coupled to the peelable lid at a plurality of attachment points, including at least one attachment point coupled to the peelable lid away from the handle. The lifting mechanism can be configured to lift at least one portion of the peelable lid near each of the plurality of attachment points.

A peelable lid system includes a peelable lid, a seal configured to seal the peelable lid to a container, a handle coupled to the peelable lid, and a lifting mechanism coupled to handle. The lifting mechanism can be coupled to the peelable lid at a plurality of attachment points, including at least one attachment point coupled to the peelable lid away from the handle. The lifting mechanism can be configured to lift at least one portion of the peelable lid near each of the plurality of attachment points.

A package includes a lid with a peel initiator portion and a remaining portion. The package further includes a tray. The tray includes a rigid component and a liner component including a liner-flange portion. The package further includes an adhered area which includes a seal between the peel initiator portion and the liner component. A lid-flange portion includes the peel initiator portion and the remaining portion. The adhered area includes the lid-flange portion of the peel initiator portion and the liner-flange portion. Further, the adhered area includes 90 percent or less of an area of the peel initiator portion.

A peelable lid system includes a peelable lid, a seal configured to seal the peelable lid to a container, a handle coupled to the peelable lid, and a lifting mechanism coupled to handle. The lifting mechanism can be coupled to the peelable lid at a plurality of attachment points, including at least one attachment point coupled to the peelable lid away from the handle. The lifting mechanism can be configured to lift at least one portion of the peelable lid near each of the plurality of attachment points.