Abstract: The invention relates to a rotary piston pump for one-time use made of plastic for screwing onto a fastening nozzle on a tubular bag, having two rotors (10), which are coupled to each other via gear wheels (11) and which can be driven in opposition and which are mounted in a pump housing (5), which has suction nozzles (6) and outlet nozzles (7), wherein each rotor (10) has a rotor shaft (12), the rotor shaft ends (15) thereof being mounted in the walls (8, 4) of the pump housing (5), and the gear wheels are integrally molded to the rotor shafts, and wherein each rotor (10) has two rotor wing walls (13) arranged diametrically on the rotor shaft (12) which flare continuously outward and to each of the peripheral ends of which a partially cylindrical rotor wing shoe (14) is molded, wherein the rotor wing shoes (14) contact the cylindrical inside wall regions of the pump housing (5), on one side, and the rotor wing shafts (13) of the adjacent rotor (10) on the other, in a sliding and sealing matter, wherein seals

Abstract: A resealable pouring spout for a bag, the spout having a pouring spout body (2) configured to be welded to the bag, a flange (3), a cutting device (1) having a flange-side cutting system (4), and a screwable sealing cap (5) on the pouring spout body (2). The pouring spout is configured to turn and displace the cutting device in a direction of the flange when the sealing cap is opened for the first time, and thereby cut open the bag.

Abstract: The invention relates to a disposable metering pump made of plastic for products having solid fractions. Said disposable metering pump has two rotors (10) which are coupled to each other by means of gears (11), can be driven in opposite directions, and are supported in a pump housing (5). Each rotor (10) has a rotor shaft, the rotor shaft ends (15) of which are supported in the walls of the pump housing (5). Each rotor (10) has two rotor blade walls (13), which are arranged diametrically opposite on the rotor shaft. One partially cylindrical rotor blade shoe (14) is formed at each of the peripheral ends of the rotor blade walls. The rotor blade shoes (14) lie against the cylindrical inner wall regions of the pump housing (5) in a sliding and sealing manner. The rotor blade walls (13) have concave recesses on both sides between the rotor shafts (12) and the rotor blade shoes (14), in each of which recesses an end edge of a rotor blade shoe of the adjacent rotor can mesh.

Abstract: The invention relates to a method for producing tubular bags made from plastic film or from composite film having a plastic layer on the bag content side, having a self-cutting plastic closure attached to the tubular bag, consisting of a spout part having a fastening flange, a cutting body, which is movably guided in the spout part, and a screw cover having means for activating the cutting body. The film material (5) is supplied from a supply roll to a bag manufacturing machine and the plastic closure is sealed onto the film material in a spout region of a tubular bag. According to the invention, the film material (5) is thinned on the inside of the bag in a ring-shaped region, which is intended for cutting by the cutting body, by means of a thermal embossing process. The plastic closure is then positioned and sealed onto the film material such that the cutting organ embedded in the spout part can become effective in the thinned, ring-shaped region upon use thereof.

Abstract: A plastic closure device (1) with a lower part (2) is disclosed which can be fastened in a non-releasable and integrally bonded manner by means of ultrasonic welding to a plastic film or a plastic patch. A flange (20) of the lower part (2) is connected by an underside thereof to the plastic layer in an integrally bonded manner by means of introducing ultrasonic energy of a sonotrode into the flange (20). An energy-introducing arrangement, comprising a plurality of energy-introducing ribs (23), is used to introduce the ultrasonic energy into the flange (20), as a result of which the weld parts are welded under the action of a static joining force. Owing to the design according to the invention of the energy-introducing arrangement, a desired connection can be achieved in spite of a reduced static joining force, a reduced ultrasonic energy and, in general, with the use of a reduced welding power by comparison with prior art methods.

Abstract: The invention relates to a metering device consisting of a housing (1) for receiving an interchangeable container, said container being connected to a disposable pump (10), an electric drive motor (6) for driving the disposable pump (10), control means for controlling said drive motor (6) and for influencing the pump volume, an electric current source or an electric connection for supplying energy to the electric drive motor (6) and the control means, said housing (1) additionally having a receiving portion (11) for form-fittingly retaining the disposable pump (10), said housing (1) comprising two pivotally interconnected partial shells (7a, 7b) and one elastic squeezing element (12a, 12b) being secured to each partial shell (7a, 7b), the interchangeable container being clamped between these, and the metering device being suitable for receiving interchangeable containers in the form of non-dimensionally stable, hanger-free tubular pouches (8).

Abstract: An apparatus for producing soft ice cream has a storage container (1) for receiving soft ice cream raw material in liquid form and a refrigeration chamber (4) with a mechanical mixing device (5) installed therein in which the soft ice cream raw material is mixed with air and thus prepared to form soft ice cream. The storage container (1) is a bag (8) which can be inserted into the apparatus, with an integrated single use pump (9) with an opening device (19) for the bag.

Abstract: A device (1) is proposed which consists of a pouring nozzle (2) with a cylindrical circumferential wall (20) and with an internal thread (21) and a terminal flange (22), into which an adapter (3) can be screwed. The adapter (3) has an inlet end (30) with an external thread (32) and an outlet end (31) with a conical tube attachment (35). At least one combined perforating and cutting tooth (34) is formed integrally on its lower edge in the screwing-on direction. In order to achieve as high a sealing force as possible between the tubular bag (4) and the adapter (3), a special seal is proposed. To this end, the cylindrical circumferential wall (20) above the terminal flange (22) is guided into a double-walled region. The outer region forms an obliquely outwardly directed conical supporting-wall region (24) and the inner double-walled region (23) is formed by a likewise slightly conically designed but inwardly directed sealing skirt (25).

Abstract: A re-sealable pouring spout for a bag consisting of flexible film has a cutting device comprising a cutting system (4). The cutting system (4) of the cutting device has at least one cutting teeth group (11) running around one part of the circumference of a cutting circle. Each cutting teeth group (11) has a number of cutting teeth (12, 12a). The cutting teeth of the cutting teeth group (11) are arranged such that the leading cutting tooth (12a) in the cutting direction projects the furthest in an axial direction (A) and the subsequent cutting teeth (12) of the cutting teeth group (11) that follow on from the leading cutting tooth (12a) project to a continually lesser extent in the axial direction (A). The leading cutting tooth (12a) in the cutting teeth group (11) has a flat portion (13a) and the other cutting teeth (12) of the cutting teeth group (11) that follow on from the leading cutting tooth (12a) have flat portions (13) that become increasingly smaller.

Abstract: The present invention discloses a container cover produced from a plastics film, having a rotating closure which has a rotatable cylindrical cutting device (100, 300), wherein the latter has a lower rim (110) on which at least one cutting edge section (120) is arranged, and wherein said at least one cutting edge section (120) has at least three teeth (130) which are located on a line extending in an inclined manner in relation to the bag, and wherein the front-most tooth in the direction of rotation comes first into contact with the plastics film during the cutting operation. The cutting device (100, 300) is characterized in that the inclination of the line on which the teeth (130) of each cutting edge section are located is selected such that, in the case of at least approximately maximum deformation of the plastics film before the latter is perforated by the front-most tooth, at least two following teeth of the same cutting edge section (120) are in direct contact with the plastics film.

Abstract: The device (1) consists of a second connection piece (4), which can be welded via its flange (41) onto an aseptically closed tubular bag (2). A first connection piece (33) can be screwed into the second connection piece (4) and is provided at the end with opening means (34). The first connection piece (33) forms the intake piece of a metering pump (3). Securing means (5) hold the metering pump (3) in the correct position relative to the second connection piece (4) before the first use, and further means hold the metering pump (3) in the correct position relative to the second connection piece (4) in the use position.

Abstract: The invention relates to a metering pump (1) made of plastic, with two rotors (10) coupled to one another via gears (11) and drivable in opposite directions, which are seated in a pump housing (5) equipped with suction ports (6) and outlet ports (7), wherein each rotor (10) has a rotor shaft (12), the rotor shaft ends (15) of which are seated in the walls (8, 4) of the pump housing (5). Each rotor (10) has two rotor blade walls (13) arranged diametrically on the rotor shaft (12), a partially cylindrical rotor blade shoe (14) being formed at each of the peripheral ends of said rotor blade walls, wherein the rotor blade shoes (14) on the one hand contact the cylindrical inside wall regions of the pump housing (5) and on the other contact the rotor blade shafts (13) of the adjacent rotor (10) in a sliding and sealing manner.

Abstract: The invention relates to a plastic closure device (1) for a tubular bag made of plastic or a multi-layer plastic film, comprising at least one bottom part (5) that has a spout (7), a spout opening (8), and a flange (4). The flange (4) has an energy-introduction arrangement (10) on the flange underside surface (9) of the flange. The energy-introduction arrangement can be connected to the plastic material or the plastic film of the tubular bag by means of ultrasonic welding. The energy-introduction arrangement (10) has at least one energy-introduction rib (12) arranged concentrically to the spout opening (8) in the peripheral region (11) of the flange (4). A concentrating rib (13) is provided on the flange underside surface (9). The concentrating rib extends within the energy-introduction arrangement (10) and protrudes from the flange underside surface (9) higher than the energy-introduction rib (12) and also extends directly adjacent to the spout opening (8).

Abstract: A plastic closure device (1) must be welded by means of ultrasound onto a tubular bag (2) consisting of a multilayer plastic film (20). For this purpose, an energy introduction arrangement (182) on the underside (180) of a flange (18) is proposed, in which at least one energy conduction rib (183) concentric with the outer edge (181) of the flange is present, as well as a plurality of outwardly-directed energy conduction ribs (184). These energy conduction ribs can intersect in the region of intersection (185) or they can be interrupted in the region of intersection.

Abstract: For the first time, a screw cap (1) is realized with which a tubular bag to which the screw cap (1) is attached can be opened by a self-cutting process and metered dispensing from a metering opening (31) is simultaneously realized. The screw cap (1) consists of a lower part (2), on which a spacing means (4), used in practical terms as transport protection, is placed, and onto which a cutting sleeve (3) with a lateral metering opening (31) is screwed. The container can be opened by means of the cutting sleeve (3) and thereafter its contents can be dispensed in a metered manner by means of a valve piston (5) that is guided in the cutting sleeve (3) by a screwing movement. In the closed state, the valve piston (5) reaches into the cylinder (30) of the cutting sleeve (3) underneath the metering opening (31) and seals the cylinder (30), which is open at both ends, off against the container that is welded to the flange (21) of the lower part (2).

Abstract: The present invention discloses a container cover produced from a plastics film, having a rotating closure which has a rotatable cylindrical cutting device (100, 300), wherein the latter has a lower rim (110) on which at least one cutting edge section (120) is arranged, and wherein said at least one cutting edge section (120) has at least three teeth (130) which are located on a line extending in an inclined manner in relation to the bag, and wherein the front-most tooth in the direction of rotation comes first into contact with the plastics film during the cutting operation. The cutting device (100, 300) is characterized in that the inclination of the line on which the teeth (130) of each cutting edge section are located is selected such that, in the case of at least approximately maximum deformation of the plastics film before the latter is perforated by the front-most tooth, at least two following teeth of the same cutting edge section (120) are in direct contact with the plastics film.

Abstract: A cutting tooth (101) of a cutting device is disclosed as part of a closure device for opening a container covering for the first time. The shape of the cutting tooth (101) with a blunted tooth tip (1011) with a cutting edge (1012) leads to improved cutting results, wherein the container covering is notched or nicked. Here, each cutting tooth (101) has a robust tooth tip (1011) without edges which cuts into the container covering as a result of rotation of a cap of the closure device, wherein the cutting device is moved along with it.

Abstract: The invention relates to a closeable opening device (1) made of a spout fitting (2), a cutting element (3), and a screw cap (4), optimized for assembly and use. To this end, the spout fitting (2) and cutting element (3) are produced as semi-finished goods (5). The cutting element (3) comprises an upper edge (33) at the cylindrical part (30), having recesses (36) distributed uniformly around the circumference. The screw cap (4) comprises ring wall segments (46) on the inner underside of the cover surface thereof, designed diametrically opposite the recesses (36). The upper edge (33) and the ring wall segments (46) slide against each other during assembly, until the ring wall segments (46) engage in the recesses (36) in a form-fit manner. A stable form-fit connection thus exists between the two said parts, allowing greater torque to be transmitted without the problems known from the state of the art occurring.

Abstract: The closeable opening device according to the invention comprises a base (2) in which a cutting element (3) is supported. Driving dogs (42) in the closing screw cap (4) engage with driving dogs (32) in the cutting element (3), so that the cutting element (3) is displaced in the base (2) to the end position upon initial opening. At least one first rotational stop (5, 50) ensures that the cutting element remains in position and neither moves upward in an undesired manner when the screw cap is opened, nor can be displaced downward by any relative displacement of the two parts, thus causing same to fall into the container. The first rotational stop (5) is made of a rib (50) on the inner face of the spout (20), which interacts with a recess in the form of a flat spot (35) on the cutting element (3).

Abstract: A device (1) is proposed which consists of a pouring nozzle (2) with a cylindrical circumferential wall (20) and with an internal thread (21) and a terminal flange (22), into which an adapter (3) can be screwed. The adapter (3) has an inlet end (30) with an external thread (32) and an outlet end (31) with a conical tube attachment (35). At least one combined perforating and cutting tooth (34) is formed integrally on its lower edge in the screwing-on direction. In order to achieve as high a sealing force as possible between the tubular bag (4) and the adapter (3), a special seal is proposed. To this end, the cylindrical circumferential wall (20) above the terminal flange (22) is guided into a double-walled region. The outer region forms an obliquely outwardly directed conical supporting-wall region (24) and the inner double-walled region (23) is formed by a likewise slightly conically designed but inwardly directed sealing skirt (25).