The purpose of the present invention is to provide: a packaging container that can be industrially mass-produced, that can be used as Modified Atmosphere Packaging (MAP) while ensuring sealing performance, and that allows contents to be displayed in a three-dimensional manner; a packaged product contained in the packaging container; and a manufacturing method and manufacturing apparatus for the packaging container. This packaging container has: a container main body having a bottom face part and sidewall parts, and having a flange at the upper end part periphery of the sidewall parts; and a lid material heat-sealed to the flange. The lid material is made of a film or sheet. A pair of opposing sidewall parts has the same shape, and upper end parts of the pair of side wall parts are at least positioned higher than the upper end parts of another pair of opposing sidewall parts.

The present application provides a ventable package capable of releasing pressure upon the application of heat or internal pressure. The ventable package may include a container and a lid. The lid may include a sealing layer attached to the container and a foil layer attached to the sealing layer. The sealing layer may include one or more slits therein such that, upon the application of heat or internal pressure, the foil layer separates from the sealing layer about the one or more slits to release the pressure therein.

A closure 20 for a pressurized container having a plate with a top side 24 and a bottom side 28, a first notch 22 that extends about a first axis A1 along the top side, and a second notch 26 that extends about the first axis along the bottom side. The first and second notch form a membrane 62 that is capable of being ruptured when a maximum pressure causes the membrane to rupture.

An enclosure, such as, for example, a motor control center (MCC) used in an industrial automation environment, designed to provide pressure relief and ingress protection. The enclosure includes an opening, an optional gasket disposed over the opening, and a pressure relief plate disposed over the gasket including tabs that secure the pressure relief plate to the enclosure. The tabs are adapted to fracture upon a change in pressure within the enclosure to allow the pressure relief plate to open, and thereby to allow pressure to escape from the enclosure responsive to the change in pressure within the enclosure.

A drum for transporting and/or storing batteries, the drum having an internal storage space having a volume, and the drum being provided with a lid to close off the storage space The lid is provided with one or more openings for venting gas from the storage space to the atmosphere. One or more openings have a total surface area of at least 1.0 square centimeter per liter volume of the storage space. On an outside of the lid is at least one sheet of foil which covers a first group of two or more of said openings, in which the sheet of foil is connected to the lid completely around the first group of openings.