A reclosable pouch comprises a body portion having first and second pouch walls and first, second, and third closure mechanisms which do not contact one another.

Closure device for a reclosable pouch

The flexible storage bag includes overlaying first and second sidewalls defining an internal volume that can be accessed from an open top edge. To evacuate air from the internal volume after the open top edge has been closed, the bag includes a one-way valve element attached to the first sidewall and communicating with the internal volume. To prevent the one-way valve element from becoming clogged by the opposing second sidewall, the bag also includes a clearance member that maintains at least a partial clearance between the first and second sidewalls proximate the valve element. The clearance member can take many forms such as a textured portion on the second sidewall that includes evacuation passages which provide air in the internal volume access to the valve element, a permeable element covering the valve element, and a rigid or compressible structure that spaces the second sidewall from the valve element.

Flexible storage bag

A storage bag for food products with a venting structure to expel excess air trapped inside the bag after the bag has been closed or sealed. After the excess air is removed, the venting structure is covered and sealed to prevent air from re-entering the bag or other objects from entering the bag.

Ventable storage bag

Valves useful for pressure relief/ventilation/vacuum or pressure retention, particularly in packaging containers, are disclosed. The present valves include a first member which is substantially rigid, includes an outer sealing region and a raised section having at least one hole therethrough; and a second member which is substantially elastic, is in close proximity to, preferably in contact with, the raised section of the first member and is sealingly secured the first member at the outer sealing region. The second member includes at least one through hole located outwardly or outboard of the raised section of the first section and inwardly of the outer sealing region of the first member. The elastic member may be moved away from the raised section to equalize gas pressures between a container and the environment outside the container or is urged into more intimate contact with the raised section to prevent gas flow into or out of the container. The present valves are effective and reliable for repeated and/or long term use.

One direction ventilation valves

A vented bag includes at least one rectangular sheet of substantially gas-impervious material having a top edge, a bottom edge opposite said top edge, and a first side edge folded over an opposite second side edge to form a tube. The tube has a longitudinal seam including at least first and second overlapping sheet portions joined together along a plurality of seal lines extending longitudinally from said top edge of said sheet to said bottom edge of said sheet. The bag is sealed to closure at one end of said tube. Each of the plurality of seal lines includes a discontinuity proximate one of the top and bottom edges of the sheet. The discontinuities in adjacent ones of the seal lines are disposed proximate opposites ones of the top and bottom edges of the sheet such that the plurality of seal lines, the discontinuities, and the first and second overlapping sheet portions form a tortuous channel providing communication between the interior of the bag and the exterior of the bag.

Bag with venting means

Overpressure valves for packaging containers are supplied in a roll, transported in this form to a packaging machine, separated here and attached to packaging containers by means of an adhesive coated surface. For this purpose the overpressure valves have a layer of emulsion bonding on their underside. To prevent individual layers of the roll from sticking together, the overpressure valves have an adhesive-repelling layer on their top side. The overpressure valves are connected to one another in one piece and in a row, and are separated consecutively in a packaging machine.

Overpressure valve for a packaging container

A packaging container comprises a foil laminate comprising at least two layers in which openings are formed The two layers are joined together over their entire surface area, except for in a striplike channel A valve strip is disposed in the channel and in valvelike fashion covers the openings of the inner layer If there is an overpressure in the packaging container resultant gas can escape into the open through the openings and the valve strip acts like an overpressure valve As a result of the specialized disposition and embodiment of the valve strip and of the openings, a reliable escape of gas produced is achieved

Laminate for producing packaging containers

The invention relates to a pressure relief valve (2) for a packaging container (1), comprising a base plate (3), which can be fastened on a wall of the packaging container and has a valve opening (9), also comprising a membrane (4), which is arranged on the base plate (3) over the valve opening (9), wherein the membrane (4) has an adhesive on one side, and further comprising an intermediate layer (6), which is adhesively bonded to the adhesive-containing side of the membrane such that the membrane (4) has two remaining, parallel adhesive-containing peripheral zones for fastening on the base plate (3), wherein the membrane (4) is arranged on the base plate by way of the intermediate layer (6) such that a channel zone (14) is formed on the base plate (3), this channel zone covering over the valve opening (9) and resting right up against the base plate in the closed position.

Pressure relief valve for a packaging container

An overpressure valve for a packaging container is disposed on the inside of the packaging material comprising the packaging container The overpressure valve comprises a base plate, a diaphragm, and a connecting element The overpressure valve is relatively simple in construction and can be produced economically

Overpressure valve for the content of a package

A method of producing overpressure valves for packaging containers supplied in a roll, transported in this form to a packaging machine, separated at the machine and attached to packaging containers by means of an adhesive coated surface. For this purpose the overpressure valves have a layer of emulsion bonding on their underside. To prevent individual layers of the roll from sticking together, the overpressure valves have an adhesive-repelling layer on their top side. The overpressure valves are connected to one another in one piece and in a row, and are separated consecutively in a packaging machine.

Herbert Stotkiewitz

Papers

Overpressure valve for a packaging container

Laminate for producing packaging containers

Pressure relief valve for a packaging container

Overpressure valve for the content of a package

Method of producing overpressure valve for packaging containers