Robert Boschgmbh

Syntegon Technology Gmbh

Herbert Stotkiewitz

Klaus Domke

Juergen Haak

Norbert Buchner

Guenther Voegele

Hans-Peter Stadel

Manfred Reichert

Thomas Fischer

Kuno Lemke

Bernd Wilke

Jenny Haase

Sabine Zimmermann

Joachim Berner

Wolfgang Bloch

Anton Nieskens

Daniel Schulz

Bernd Neugart

Frank Kurz

Michael Eidher

Helmut Rumes

Mathias Duelfer

Peter Knappe

Jelco Klimaschewski

Hans Schaefer

Alexander Lutz

A pressure relief valve () comprises a main body (), at least one through opening (), which extends through the main body (), a diaphragm (), which is arranged over the at least one through opening (), and a fluid (), which is provided on the main body (), the fluid () being arranged between the diaphragm () and the main body (), the main body () having a first sealing region (), a second sealing region () radially outside the first region, and a third sealing region () radially outside the second region, the regions being respectively formed as continuously closed, the at least one through opening () being arranged between the first sealing region () and the second sealing region (), and the diaphragm () covering the first sealing region (), the second sealing region () and the third sealing region ().

Vacuum-tight pressure relief valve for packaging containers

Pressure relief valve of a packaging container, comprising: a main body () with an edge region () and with a sealing face (), wherein the edge region () is connectable in sealing fashion to a wall () of a packaging container () and wherein at least one passage opening () is formed in the sealing face (), said passage opening extending through the main body (), a first diaphragm () that is arranged over the passage opening () and at least partly covers the sealing face (), a second diaphragm () that at least partly covers the first diaphragm (), and a fluid () that is applied to the sealing face () and by means of which fluid the first diaphragm () is held on the sealing face () in floating fashion.

Pressure relief valve with floating diaphragm

A pressure relief valve () for a packaging container () includes a base plate (), which can be fastened on a wall of the packaging container and has a valve opening (). The valve () also includes a membrane () which is arranged on the base plate () over the valve opening (), wherein the membrane () has an adhesive on one side. The valve () also includes an intermediate layer (), which is adhesively bonded to the adhesive-containing side of the membrane such that the membrane () has two remaining, parallel adhesive-containing peripheral zones for fastening on the base plate (). The membrane () is arranged on the base plate by way of the intermediate layer () such that a channel zone () is formed on the base plate (). The channel zone covers over the valve opening () and rests right up against the base plate in the closed position.

Pressure relief valve for a packaging container

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

The invention relates to a pressure relief valve for a packaging container (), comprising a base body () with a central through opening (), a sealing surface () and a peripheral region (), wherein the peripheral region () may be sealingly connected to an inner side () of the packaging container () and the sealing surface () has an inwardly tapering form and a membrane (), making contact with the sealing surface () to permit a seal wherein a fluid () is arranged between the sealing surface () and the membrane (). The membrane () is flexible and a recess () is made in the base body () into which the central through opening () opens out, wherein in the opening region of the central through opening (), an annular bead () projecting in the direction of the membrane () is arranged, projecting into the recess ().

The invention relates to a pressure relief valve, comprising a base body, which is covered by a valve membrane. The base body which is located on the inner face of a packaging container, permits the escape of excess pressure from the packaging container into the atmosphere by means of passages and perforations that are configured in the wall of the packaging material. The inventive pressure relief valve thus responds particularly well. i.e. allowing particularly low opening pressures, by means of the special configuration of its base area.

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 pressure control valve for a packaging container includes a supporting body having a recess a is disposed in an axially captive fashion either by means of gluing or by means of securing projections A device for attaching the pressure control valve to a material web has a stroke die and a sealing die that cooperates with the stroke die and contains a needle holder for producing holes in the material web.

Pressure control valve for a packaging container and device for attaching the pressure control valve to a material web

A tube-forming apparatus in a bag-forming, filling, and sealing machine has a longitudinal seam heat-sealing device for connecting edge regions of the packing material belt that are placed against each other inside surface to inside surface. In order to achieve a sufficient sealing temperature in a short time, a heating body that is embodied in a lamella-like fashion protrudes like a tongue between the edge regions. In order to aid the heating body, similar heating bodies rest against the outside of the edge regions. The heating bodies have a U-shaped electric resistance wire with elongated legs which is embedded in a longitudinally folded casing made of a thin, temperature-proof woven cloth.

Tubular device in a bagging machine

Tubular bag machine having a device for keeping the inside of a flexible

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

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.

Method of producing overpressure valve for packaging containers

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 packaging containers

A bag evacuating and closing apparatus having two opposing jaws which face ends that move toward one another. The jaws encompass a top closure of a bag package to be sealed. The jaws have hollow spaces open toward one another which are surrounded by frames with sealing jaws disposed in the hollow spaces; the hollow spaces form a chamber that receives the top closure of the bag package. A sealing rib protrudes from one face end of the two frames and is interrupted in a middle region of the frame part at which the closure fold protrudes between the jaws. In this region, suction openings are disposed in the frame parts of both jaws; these suction openings pull two walls of the top closure tightly against the frame parts. After the top closure of the bag package has been tightly encompassed, air is extracted from the bag package by a vacuum, and subsequently, the top closure of the package is tightly sealed by the sealing jaws which form a sealing seam to close the upper end of the bag.

Growing community of inventors

Bietigheim-Bissingen, Germany

Herbert Stotkiewitz