Abstract: There is described a sonotrode for sealing an opening device onto a hole of a packaging material destined to from a sealed package, comprising: a sealing surface adapted to cooperate with packaging material in order to seal the opening device to the packaging material; a cavity bounded by an opening of sealing surface and adapted to receive the opening device and a ring made in an elastomeric material, partially protruding inside the cavity, and adapted to center a first axis of the opening device on a second axis of the sonotrode.

Abstract: There is described a unit for applying at least one pre-formed opening device onto a hole of a web of a packaging material, unit comprises an advancing means device for advancing the web along a path; and at least one application station, which is fed, in use, with pre-formed opening device and seals, in use, pre-formed opening device on the hole of web.

Abstract: There is described a sonotrode for sealing an opening device onto a hole of a packaging material destined to from a sealed package, comprising: a sealing surface adapted to cooperate with a said packaging material in order to seal the opening device to the packaging material; a cavity bounded by an opening of sealing surface and adapted to receive the opening device; and a ring made in an elastomeric material, partially protruding inside the cavity, and adapted to center a first axis of the opening device on a second axis of the sonotrode.

Abstract: A piezoelectric sound transducer using a piezoelectric plastic material is developed from a substrate layer and a layer of a piezoelectric plastic material deposited thereon, the piezoelectric plastic layer covering the substrate layer not completely but having openings.

Abstract: A sensor element having a layered construction and configured to detect a physical property of a gas or a liquid includes a functional component situated in the interior, which functional component is connected electrically to a conductor element, which conductor element extends up to the outer surface or up into the surroundings of the sensor element. The sensor element has at least one sealing element which adjoins the functional component and/or the conductor element. The conductor element and the at least one sealing element are configured to be gas-tight at least regionally in the interior of the sensor element and are situated in such a way that the functional component is separated gas-tight from the surroundings of the sensor element.

Abstract: A piezoelectric sound transducer using a piezoelectric plastic material is developed from a substrate layer and a layer of a piezoelectric plastic material deposited thereon, the piezoelectric plastic layer covering the substrate layer not completely but having openings.

Abstract: A sensor element having a layered construction and configured to detect a physical property of a gas or a liquid includes a functional component situated in the interior, which functional component is connected electrically to a conductor element, which conductor element extends up to the outer surface or up into the surroundings of the sensor element. The sensor element has at least one sealing element which adjoins the functional component and/or the conductor element. The conductor element and the at least one sealing element are configured to be gas-tight at least regionally in the interior of the sensor element and are situated in such a way that the functional component is separated gas-tight from the surroundings of the sensor element.

Abstract: A sealing unit (8) for applying a plastic foil (7) to a planar substrate material (1) by means of heat and pressure using a sealing plate (11) with a heated active surface and a back plate (9) which is movable relative thereto. In accordance with the invention, sealed material from the sealing unit is provided to a die cutting unit (16) and preferably the sealing unit (8) is linked to the die cutting unit (16). The die cutting unit is provided with at least one die cutting knife (15) and a counter plate (21) for subsequently making die cuts (6) at selected locations in the planar substrate material (1) in the region of the applied plastic film (7).

Abstract: A device for punching, stamping and/or shaping flat elements (29) includes a base body (1) with a table (18) and support (26) for the flat element (29), and a base plate (17), which supports a punch (24), and which is advanced with a drive (4,5) toward the support (26) and into a working station (II), bringing the punch (24) into contact with the support (26). A large number of successive, very short, highly precise, punching strokes make punched holes or stampings. Short stop periods and short clock times are used for fast moving flat elements (29). Transfer apparatus (9, 7; 35; 43; 46) coupled between the drive (4,5) and the base plate (17) move the base plate (17) without building up pressure from a position of rest (I) The punch (24) is not in contact with the support (26), up to immediately in front of working position (II). The base plate (17) is then moved into working position (II) while producing a high pressure between the base plate (17) and the flat element (29).

Abstract: The invention relates to a device for punching, stamping and/or shaping flat elements (29), comprising a base body (1) with a table (18) and support (26) for the flat element (29), and comprising a base plate (17), which supports a punch (24) and which, in order to carry out the working process, can be advanced with the aid of a drive (4,5) toward the support (26) and into a working station (II) whereby bringing the punch (24) into contact with the support (26) and can be moved away therefrom. The aim of the invention is to create a device of the aforementioned type with which a large number of very short and highly precise punching strokes can be executed in succession in order to make punched holes or stampings and, in particular, short stop periods and thus short clock times, in fact, the shortest possible working strokes, can be achieved in the event of fast moving flat elements.

Abstract: A sealing unit (8) for applying a plastic foil (7) to a planar substrate material (1) by means of heat and pressure using a sealing plate (11) with a heated active surface and a back plate (9) which is movable relative thereto. In accordance with the invention, sealed material from the sealing unit is provided to a die cutting unit (16) and preferably the sealing unit (8) is linked to the die cutting unit (16). The die cutting unit is provided with at least one die cutting knife (15) and a counter plate (21) for subsequently making die cuts (6) at selected locations in the planar substrate material (1) in the region of the applied plastic film (7).

Abstract: The invention relates to a device for aligning a packing material tube (1) with a treatment station in a packaging machine in which a tube (1) with a circular cross-section is produced from a strip of printed packaging material having embossed lines. Said tube is closed by longitudinally sealing it, filled and shaped in a cross-sealing unit (12) and divided into cuboid packages. The unit (12) is provided with an adjustable lift of stroke so that it intermittently convey the tube (1). It is also provided on diametrical sides with a folding flap (16) that can be pivoted about an axis (15). For feeling the position mark, a sensor is arranged. The aim of the invention is to facilitate a faster termination of the initial phase when the packaging machine is put into operation while at the same time producing less cuttings and to prevent the paper tube from being damaged. To this end, a folding finger (19) is arranged upstream of every folding flap (16).