A steam-releasing pouch includes two laminated sheets forming an accommodation compartment that accommodates a content, a sealing portion that seals the two sheets to form an opening that opens part of the accommodation compartment, and a steam-releasing sealing portion formed in the sealing portion to open as pressure of the accommodation compartment increases in a state in which the opening is sealed. The steam-releasing sealing portion includes a first sealant layer having at least a first base layer that faces the accommodation compartment and a second base layer laminated with the first base layer and a second sealant layer having at least a third base layer that faces the accommodation compartment and a fourth base layer laminated with the third base layer. The first base layer and the third base layer are joined together.

A container which is useful for safely storing and transporting compositions, such as liquid organic peroxide-containing compositions, which may be flammable, combustible, susceptible to exothermic decomposition, explosive and/or otherwise hazardous, is provided. The container includes a containment vessel having thermoset polymer-containing walls, as well as a vent mechanism. The containment vessel may be manufactured by a rotational molding process using a thermoplastic polymer, such as a polyethylene, which is crosslinked to provide the thermoset polymer.

Proposed is a gas discharge valve for a packaging material, the gas discharge valve being attached on an upper surface of a packing material in a manner that covers a through-hole formed in one side of the packing material and being configured to discharge to the outside thereof only gas within the packing material, the gas discharge valve including: a high-adhesiveness layer attached to an external surface of the packing material and adhered to a portion of the external surface in the vicinity of the through-hole; and a low-adhesiveness layer formed inside the high-adhesiveness layer and adhered to cover a top opening of the through-hole, where, when gas occurs within the packing material, the low-adhesiveness layer is inflated by pressure, a portion thereof is raised, and the gas is discharged, and when the pressure is released, the low-adhesiveness layer seals the through-hole, thereby blocking introduction of outside air.

One-way pressure relief valves with wetting fluid reservoirs are disclosed. Valves of the types described herein may be applied to a product package, for example a package containing dry roasted coffee, to allow gas to escape from the package while preventing entry of ambient air into the package. A wetting fluid is provided within the valve to facilitate formation of the seal blocking entry of ambient air through the valve and into the product package. The wetting fluid reservoirs hold wetting fluid to limit or prevent leakage of the wetting fluid from the valve providing benefits such as improved application of the valves to the packages, improved retention of the valves to the packages, and appearance improvements resulting from avoidance of leakage of wetting fluid onto the valve and the package to which the valve is attached.

A novel form of Mylar bag with air valve is disclosed. The bag provides air valve so air can be removed by using simple air pump. The bag assembly is easy to use and reduces the nuisance of using various types of oxygen absorbers or any other similar supplies. The assembly allows safe retention of food while providing additional layers of protection from moisture, light, and odor.

A valve assembly is provided. The valve assembly includes a body having an annular valve seat. A central ring is concentric with the annular valve seat, and a plurality of vanes extend radially between the central ring and the annular valve seat. A receiver is defined by an axial through hole in the central ring and an annular outer lip adjacent the through hole. The outer lip includes a plurality of circumferentially spaced notches disposed in an inner perimeter of the lip. The assembly also includes an umbrella valve having a flexible, disk-shaped cap and an elongated stem extending axially from a center of the cap. The stem has an enlarged portion proximate a terminal end that is received through the outer lip and into the receiver to secure the umbrella valve in the central ring. A fuel reservoir and a method of making the valve assembly are also provided.

A container assembly includes a vessel and a lid removably coupled to the vessel. The lid includes a circumferential rim at an interface with the vessel, wherein the rim is separated from the vessel by a gap, wherein the gap is open to the atmosphere outside the container. The container includes a gasket disposed at a sealing position between the lid and the vessel to seal a reservoir of the vessel from the gap. The rim includes a recess extending circumferentially along a first portion of the rim. The recess forms a portion of the gap and defines a venting zone extending circumferentially along the first portion of the rim. In response to the internal reservoir of the vessel reaching a threshold pressure, a portion of the gasket moves from the sealing position through the gap such that fluid held in the reservoir is vented past the gasket through the venting zone to reduce the pressure of the reservoir.

The invention relates to a package for outgassing foods and/or maturing foods, in particular roasted coffee and/or coffee beans, comprising a bag for storing the food, which includes a film from which the bag is formed, wherein a valve is provided to enable a discharge of gas from the package bag to the outside in the event of overpressure in the package and to reduce the diffusion-related gas exchange in the case of comparable and/or equal pressure conditions in and/or outside the package bag. It is characterized in that the valve is formed as a microperforation in the film having at least one or two holes of the size of 750 μm.sup.2 to 40 000 μm.sup.2, preferably of 390 μm.sup.2 to 20 000 μm.sup.2, particularly preferably 70 μm.sup.2 to 16 000 μm.sup.2 and/or each having the diameter of 10-70 μm, preferably 20-60 μm, particularly preferably 30 μm.

Disclosed are recyclable flexible package and a method of recycling such packages. The flexible package includes a hollow body defining an interior chamber for holding an oxygen sensitive product. The body is formed of a laminated film formed of two layers of a single polymer material, e.g., polyethylene, and at least one interposed barrier layer, e.g., polyvinyl alcohol, that is resistant to the passage of oxygen therethrough and which is water-soluble. The single polymer constitutes at least 95% by weight of the laminated film, whereupon the package is suitable for recycling without requiring separation of the materials thereof by shredding the laminated film and subjecting those pieces to an aqueous wash to dissolve the barrier layer.

A one-way valve, a food package comprising such a one-way valve and a method for manufacturing such a one-way valve is disclosed. The valve comprises a first membrane and a second membrane having a smaller surface area than the first membrane and furthermore being fixed to a bottom surface of the second membrane. The valve is furthermore adapted to be fixed to the food package and cover the aperture such that a canal is formed between the food package and the second membrane when a gas pressure inside the food package exceeds a threshold value, the canal extending from the aperture to the peripheral edge of the first membrane along the second membrane.