A manufacturing method of a sheet for food containers and a sheet for food containers manufactured by using the same, the method comprising: step 1 of blending a poly L-lactide (polylactic acid: PLA) and a polybutylene succinate (PBS) resin with a base material, and adding an organically treated organic cloisite; step 2 of melt-mixing the resin composition obtained in step 1 at high temperature by using an extruder, followed by quenching with cold water to be flattened; and step 3 of drying a flat plate-shaped resin obtained in step 2 by using a hot air dryer.

A re-sealable vessel includes a body with an open end and a lid assembly. The lid assembly includes a cap with a seal sized to seal against the open end of the body and the cap is at least partially formed from a fusible metal with a melting point less than a threshold temperature comprising a boiling point or a temperature associated with a threshold vapor pressure of a liquid contained within the body, such that when a temperature of the fusible metal exceeds the melting point, the fusible metal melts, leaving an aperture through the cap.

The present invention relates to a pressure relief element (11) to be used as an overpressure safety means in devices where a gaseous medium must be rapidly released in case of overpressure, wherein the pressure relief element (11) has at least one notch (9) which is designed as a predetermined breaking point where the pressure relief element (11) breaks at a certain level of overpressure, thereby irreversibly opening an exhaust path for the gaseous medium. The present invention also relates to a pressure relief device of an electrochemical battery, comprising such a pressure relief element and a battery comprising such a pressure relief device.

The present invention relates to a pressure relief element (11) to be used as an overpressure safety means in devices where a gaseous medium must be rapidly released in case of overpressure, wherein the pressure relief element (11) has at least one notch (9) which is designed as a predetermined breaking point where the pressure relief element (11) breaks at a certain level of overpressure, thereby irreversibly opening an exhaust path for the gaseous medium. The present invention also relates to a pressure relief device of an electrochemical battery, comprising such a pressure relief element and a battery comprising such a pressure relief device.

A package includes: a film including a crystalline stretched oriented film; and a breaking portion provided in the film and including one or more non-oriented portions formed by heating a part of the crystalline stretched oriented film at a temperature equal to or higher than a melting point of the crystalline stretched oriented film and facing each other with an oriented portion of the crystalline stretched oriented film interposed therebetween.

The present invention relates to a container assembly for accommodating a beverage. The container assembly comprises a collapsible beverage container having a body part for accommodating the beverage and a cylindrical neck part defining a gas-filled headspace. The container assembly further comprises a closure sealing off an opening of the cylindrical neck part. The closure comprises a closure disc, an inner cylindrical part and an outer cylindrical part. The closure disc comprises a beverage outlet for extracting the beverage. The closure further comprises a pressure-relief device located at the closure disc or the inner cylindrical part. The pressure-relief device is capable of establishing a permanent or reclosable opening through the closure or between the closure and the neck part for allowing a flow of fluid from the headspace to an external space when a pressure difference exceeds a predetermined pressure value being lower than the burst pressure of the container.

The present disclosure relates to a cooking container having a steam discharge portion, wherein a lid film attached on the steam container does not need to be opened when seal-packed food is heated and cooked by using a microwave oven, and a uniform pressure can be maintained during heating and cooking so that cooking quality of the corresponding content can be improved.

A lid for a liquid material storage container solves problems of uplift and breakage of the lid, and ensures high efficiency in attachment and detachment operations. The lid includes an upper plate portion covering a flange and a large-diameter opening of a storage cylinder; a plug portion extending downward from a central region of the upper plate portion and plugging the large-diameter opening of the storage cylinder; a pair of first lateral portions coming into contact with lateral surfaces of a pair of short sides of the flange when the lid is closed; a pair of claw portions extending from the pair of first lateral portions toward the plug portion and coming into contact with lower surfaces of the pair of short sides of the flange when the lid is closed; and a push-up operating portion formed in at least one of the pair of first lateral portions.

There is provided a container that makes it possible to suppress intrusion of bacteria from the tip of a pleat part into the inside of the container. The container includes: a main body that includes a body part defining a containing portion and a flange part extending outward from an upper portion of the body part; and a lid that is joined to the flange part of the main body via an outer edge seal portion so as to cover the containing portion, the lid being formed by a lid member folded back at a fold-back portion such that portions of the lid member overlap each other. The lid has: a pleat part that includes the portions of the lid member overlapping each other and that extends from an edge of one side to an edge of the other side of the lid in a first direction; and a first lid part and a second lid part that are formed by the lid member and that are arranged on opposite sides of the pleat part. The pleat part includes: a pleat seal portion in which inner surfaces of the portions of the lid member are joined together and that extends from the edge of the one side to the edge of the other side of the lid in the first direction; and a steam passing portion that includes a through hole or a cutout formed in the pleat seal portion. Seal strength of the pleat seal portion is lower than that of the outer edge seal portion.

The present disclosure generally relates to a venting system that includes a wall of a lid or a container. The lid or container defines a central longitudinal axis, and a line segment that is measured from the longitudinal axis to an outermost surface of the lid or container, and a pressure relief feature that is disposed along the lid or container. The pressure relief feature includes a thinned region of the lid or container that defines a minimum thickness that is less than 40% of a maximum thickness of the respective lid or container.