The invention is directed to a one-way valve for a flexible package which comprises a first film layer having at least one first cut line and a second film layer having at least one second cut line, wherein the lines are offset from one another. An adhesive layer is disposed between the first and second film layer, wherein the first film layer, the second film layer, and the adhesive layer define a valve area in which the first film layer and the second film layer are not permanently adhered to each other. The second cut line fluidly connects the interior of the flexible package to the valve area and the first cut line fluidly connects the valve area to the ambient atmosphere surrounding the flexible package. An adhesive pattern is disposed within the valve area and creates a gas flow channel from the second cut line toward the first cut line. An oil occupies the portions of the valve area which are not adhered via the permanent adhesive.

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.

Disclosed is a recyclable flexible package and method of making it. The flexible package includes a hollow body defining an interior chamber for holding a product. The body is formed of a laminated film resistant to the passage of oxygen therethrough and is formed of at least one layer of a first type of thermoplastic material. A degassing valve is mounted on the body and is formed of the first type of thermoplastic material. The first type of thermoplastic material of the body and the valve constitute at least 95% by weight of the package, whereupon the package is suitable for recycling without requiring separation of the materials thereof.

A delaminatable container excellent in productivity is provided. According to an exemplary aspect, a delaminatable container, includes a container body having an outer shell and an inner bag, the inner bag delaminating from the outer shell and being shrunk with a decrease in contents, wherein the container body includes a bottom seal protrusion protruding from a bottom surface of a storage portion to store the contents, and the bottom seal protrusion is a sealing portion of, in blow molding using a cylindrical laminated parison provided with an outer layer constituting the outer shell and an inner layer constituting the inner bag, the laminated parison and is bent.

Food preservation can include depositing dry ice and food within packaging. The packaging can include a flexible liner defining a wall aperture and an internal chamber. The internal chamber can receive the deposited dry ice and food and have an internal atmosphere. The packaging can include a check valve mounted to the flexible liner and covering the wall aperture. The check valve can be configured to occupy: (i) a closed state blocking fluid communication between the internal chamber and ambient via the wall aperture and (ii) an open state enabling fluid flow from the internal chamber, through the wall aperture, and into ambient.

A vacuum storage bag assembly includes a zipper bag and a vacuum valve. An opening is formed on the zipper bag. The vacuum valve is connected to the zipper bag. The vacuum valve includes a valve seat, a filtrating component and a check valve. The valve seat is disposed on the zipper bag. The valve seat includes a connecting port and a communication channel communicated with the connecting port and with interior of the zipper bag via the opening, and the connecting port is configured to be connected to a vacuum source. The filtrating component is disposed on an upstream portion of the communication channel. The check valve is disposed on a downstream portion of the communication channel and allows fluid to flow from the interior of the zipper bag, through the filtrating component, and to flow out of the connecting port.

A cardboard package has a cardboard container and a cardboard tray. The cardboard container has a proximal end, a distal end, and a first wall extending between the proximal and distal ends, the cardboard container further having a first recess in the first wall, the cardboard container further having a first protrusion on the first wall, the first protrusion extending inwardly from the first wall, the first protrusion positioned proximal of the first recess. The cardboard tray has a first wall and a first resilient member, the first resilient member being a tab, the tab having at least one of a shape or a position selected such that the tab cannot extend into the first recess when the package is in a closed position, the tab further shaped and positioned to engage the first protrusion in the cardboard container, whereby the cardboard tray is maintained in the closed position.

A cardboard package has a cardboard container and a cardboard tray. The cardboard container has a proximal end, a distal end, and a first wall extending between the proximal and distal ends, the cardboard container further having a first recess in the first wall, the cardboard container further having a first protrusion on the first wall, the first protrusion extending inwardly from the first wall, the first protrusion positioned proximal of the first recess. The cardboard tray has a first wall and a first resilient member, the first resilient member being a tab, the tab having at least one of a shape or a position selected such that the tab cannot extend into the first recess when the package is in a closed position, the tab further shaped and positioned to engage the first protrusion in the cardboard container, whereby the cardboard tray is maintained in the closed position.

A multi-compartment package for dispensing plural items is disclosed. The package includes plural individual sealed compartment units which are releasably secured to each other. Each compartment unit includes a flanged base from which a chamber depends. The chamber serves to hold an item to be dispensed and is surrounded by a flange. A closure member, in the form of a respective portion of a frangible cover sheet, is adhesively secured to the flange of each compartment unit. Each compartment unit includes at least one foldable tab in a corner of its flange, which can be folded down to enable the closure member to be removed from the compartment unit after the compartment unit is separated from other compartment units of the package.

A multi-compartment package for dispensing plural items is disclosed. The package includes plural individual sealed compartment units which are releasably secured to each other. Each compartment unit includes a flanged base from which a chamber depends. The chamber serves to hold an item to be dispensed and is surrounded by a flange. A closure member, in the form of a respective portion of a frangible cover sheet, is adhesively secured to the flange of each compartment unit. Each compartment unit includes at least one foldable tab in a corner of its flange, which can be folded down to enable the closure member to be removed from the compartment unit after the compartment unit is separated from other compartment units of the package.