A method of thermoforming a container includes forming a lid having a lid rim, and forming a base including a base rim. The method also includes forming a foldable section that joins the lid rim and the base rim and includes a lid hinge panel extending from the lid rim to a hinge and a base hinge panel extending from the base rim to the hinge. The method also includes forming a frangible line that extends from an edge of the lid hinge panel, across a portion of the lid hinge panel to a first point, from the first point across the lid hinge panel to the hinge, across the hinge, across the base hinge panel from the hinge to a second point on the base hinge panel, and from the second point across a portion of the base hinge panel to an outside edge of the base hinge panel.

A container includes first and second shells sealingly engageable with each other. Each shell includes a rim, where the rim of each shell includes a rim bead having an inner wall and an outer wall. The inner wall and the outer wall of the rim bead of the second shell frictionally engage the inner wall and the outer wall, respectively, of the rim bead of the first shell to sealingly engage the rims. The container also includes hinge panels each extending outwardly from one of the rims of the first and second shells. The hinge panels are hingedly connected to each another along a hinge line to form a foldable section that includes the hinge panels and the hinge line. The foldable section has a frangible line formed on each of the hinge panels, where the frangible line extends transversely between the hinge panels and transects the hinge line.

Provided are a food container which is formed to have a sealing moiety integrated with a lid or a container body and is not easily deformed when heated by a microwave oven or the like, so as to be capable of keeping a sealed state, and a method for manufacturing the food container. A food container 10 has a container body 11 having, in the upper surface thereof, an opening 111, and a lid 12 fittable to the container body 11 to close the opening 111. In the lid 12 or the container body 11, a sealing moiety 13 is located which makes the periphery of the opening 111 in a sealed state under a situation that the opening 111 is closed by the lid 12. The sealing moiety 13 includes an elastomer composition which includes a hydrogenated styrene based block copolymer A that has a weight-average molecular weight of 100,000 to 500,000, a softener B for rubber that has a weight-average molecular weight of 500 or more, and an olefin based resin C, and which has a hardness A of 5 to 70 both inclusive, and a compressive permanent strain (CS) of 60% or less at 100 C. over 24 hours. The sealing moiety is formed to be integrated with the lid or the container body, and the lid 12 or the container body 11 includes a polypropylene.

A container assembly including a container tray and a container lid mateable with the container tray. The container tray includes a base flange, a tray panel, and a surrounding tray sidewall extending therebetween. The tray panel includes a recessed storage region in which various items (e.g., medicine) can be stored or contained. A plurality of protrusions extend from the tray sidewall. Each protrusion can include upper and lower tapered surfaces. At least a portion of the upper surface is substantially flush with the tray panel. The container lid includes a lid panel and a surrounding lid sidewall extending from the lid panel. A plurality of recesses are formed into an interior surface of the lid sidewall. Each recess is configured and positioned to securely engage a corresponding one of the plurality of protrusions when the container lid is mated to the container tray.

A fresh-keeping box includes a box body and a lid body. Mounting frames and magnetic elements are arranged on surfaces, in contact with each other, of the box body and the lid body. When the lid body seals the box body to form a storage chamber, the magnetic elements at corresponding positions of the two mounting frames are mutually attracted to enable second surfaces of the two mounting frames to abut against each other. The fresh-keeping box is opened and closed magnetically, thus being easy and fast to operate and extremely convenient to use.