A package suitable for storing and cooking foods without user manipulation includes a venting mechanism actuated primarily or exclusively by temperature, rather than pressure. A vent hole can be sealed by a patch attached by a thermoplastic adhesive having a selected, well characterized Tg, or the patch itself can be a thermoplastic polymer having a selected Tg. The patch can be convection-heated, or a microwave absorbing susceptor material can be applied to the adhesive or patch for direct microwave heating. The patch can include a region that is melted by convection or by a susceptor material. A porous patch can be sealed by a low melting temperature polymer or by thermally sensitive ink. And/or, microwave susceptor material can be applied directly to a package wall and can melt a ventilation hole through the wall when a specified amount of microwave energy has been applied.

A modular attachment is provided to attach to a packaging machine for forming a vent opening in a packaging film used for packaging an item via a packaging machine, and attaching a semipermeable or permeable vent covering material over the vent opening. The vent opening with the attached vent covering material may allow for sterilization of medical devices, medical equipment or other medical supplies while packaged within the packaging film. The modular attachment may include features for forming the vent opening in the packaging film during delivery of the packaging film for use in the packaging process, delivering the covering material to the location of the vent opening, cutting the covering material to size for covering the vent opening, and attaching the vent covering material to the packaging film so as to cover the vent opening.

A cover for sealing and unsealing a container. The cover has a first surface adapted to be removably adhered to the container to seal an interior of the container. The cover also has a second surface opposite the first surface. The first and second surfaces define a thickness between the first and second surfaces. The first and second surfaces further define an aperture extending through the first and second surfaces. The cover further has a first tab protruding from the second surface. The first tab is configured to move from a first position sealing the aperture to a second position unsealing the aperture. The aperture permits fluid communication between the interior and an external environment. The cover additionally has a second tab spaced from the first tab. The second tab is adapted to be grasped by a user to remove the cover from the container.

The present invention provides a packaging bag that can suppress the formation of an opening at a portion other than the vapor release seal portion. According to the present invention, provided is a packaging bag made of a film heat-sealed at a seal portion, wherein the seal portion includes a vapor release seal portion configured to form a vapor flow path as an internal pressure increases, the vapor release seal portion has a curved shape curved toward an inner direction of the packaging bag, the vapor release seal portion includes a first region including a distal end of the curved shape and a second region adjacent to the first region, and sealing strength in the first region is higher than sealing strength in the second region.

A flexible, self-heating food container capable of withstanding high temperatures is provided. The container comprises a two-layer laminate structure having an air access flap that can be lifted by the consumer to allow air to enter the part of the container where an exothermic reaction takes place.

A lid structure is arranged for detachably coupled at a container body to enclose a container cavity thereof, wherein the lid structure includes a container lid and a protective component. The container lid has a drinking hole and an expansion membrane for creating a negative pressure within the container body when the container lid is sealed at the container body. The protective member has a fixed end extended from the container lid and a sealed end detachably engaged with the drinking hole to seal the drinking hole for prevent liquid spilling from the container cavity.

A microwave energy interactive structure comprises a layer of microwave energy interactive material supported on a polymer film. A plurality of microapertures extend through the layer of microwave energy interactive material and the polymer film. The microapertures have a major linear dimension of from about 0.05 mm to about 2 mm.

A protective cap for a dispenser for discharging pharmaceutical and/or cosmetic liquids, wherein the dispenser has a liquid reservoir and an outlet opening through which the liquid can be dispensed into a surrounding atmosphere, and wherein the protective cap has at least one ventilation opening to allow communication between an interior and external surroundings. An irreversibly removable sealing element which covers the at least one ventilation opening is arranged on the protective cap, which sealing element closes the at least one ventilation opening in an airtight and germproof manner before a first use.

A container for food to be heated includes a bottom surface, a sidewall, a peripheral portion, and a pressure relief protrusion. The peripheral portion includes a peripheral plane, an inner edge, an outer edge, and a pressure relief region. The pressure relief region is on the peripheral plane. The pressure relief protrusion is in the pressure relief region, and the pressure relief protrusion contacts the inner edge. The pressure relief protrusion includes a pressure relief curved surface, and the pressure relief curved surface is connected to the peripheral plane. When the peripheral plane contacts a sealing film, the pressure relief curved surface also contacts the sealing film and forms a gap between the sealing film and the junction between the pressure relief curved surface and the peripheral plane. A box having the container is also provided.

A packaging bag (10) for microwave ovens has a tube part (13) formed from a pair of resin film parts (11, 12) that each include a base material layer (21), a heat seal layer (23), and an intermediate layer (22) provided between the base material layer (21) and the heat seal layer (23) and are disposed to face each other such that the heat seal layer (23) becomes an inside thereof. At least one of the pair of resin film parts (11, 12) includes cutting lines (L1, L2, L3, L4), a temporarily fixed seal part (S), and an easy peeling part (S1), and the temporarily fixed seal part (S) is located at the easy peeling part (S1).