An ultrasonic welding system. The system includes an ultrasonic transducer assembly having a horn and a first transducer and a second transducer arranged to impart ultrasonic energy into the horn. The horn has a first part-interfacing surface and a second part-interfacing surface opposite the first part-interfacing surface. An actuator assembly is operatively coupled to the ultrasonic transducer assembly and configured to cause rotation of the horn. A controller is configured to: cause the actuator assembly to rotate the horn so that the first part-interfacing surface applies the ultrasonic energy to a first part along an entire length of the first part-interface surface while a first ultrasonic energy is applied through the horn via the first transducer to cause the first part-interfacing surface to vibrate back and forth along its entire length as the first ultrasonic energy is applied by the first transducer to the horn.

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.

The disclosure relates to a power-transfer unit for a sealing unit of a packaging machine comprising a support, intended to be attached to a sealing unit, a power bar comprising a contact-initiation section, a contact-termination section, and an intermediate section therebetween, the power bar being resiliently suspended in the support and being movable along a first direction being normal to a contact surface of the intermediate section. The power bar is suspended in the support by a first leaf spring.

The present invention relates to a package seal control system (300), comprising a control unit (308), and data recording means (306) adapted to be communicatively connected to the control unit, wherein said data recording means (306) is adapted to monitor a longitudinal seal (302) extending in a direction conforming to a direction of flow of a packaging material (e.g. Tetra Pak) in a packaging and filling machine (100). The present invention further relates to its use and method for monitoring and optionally controlling the longitudinal seal (302) of a package material in a packaging and filling machine (100).

A heating unit is described and illustrated including at least two heating devices for at least partially heating with hot air end areas of package sleeves to be sealed, wherein the heating unit has an air supply device for supplying air to be heated to the heating devices, wherein the heating devices each have a heating element for producing hot air and a nozzle unit for blowing hot air produced in the heating device against the end area of the package sleeve. In order to be able to increase the leak tightness of the sealed end areas of the package sleeves without having to accept an excessive outlay and effort in terms of the equipment and/or in terms of the method for this, it has been proposed that the heating devices are each separately connected to the air supply device by means of at least one holder and are each separately held on the air supply device by means of the at least one holder.

A method for separating fibers using a container, a vacuum pump which is connected to the container volume via a vacuum valve, and a ventilation line with a cross-sectional opening and a valve. The valve can be switched between a closed and open state in a time domain of 19-41 ms and from the open state into the closed state in a time domain of 20 to 45 ms. The method has the steps of filling the container with water and fiber composite, closing the container, mixing the water and the fiber composite using mechanical energy, by stirring, generating kinetic energy in the fiber composite by lowering the container internal pressure to a value between −700 to −950 hPa, and equalizing the pressure in the container to generate cavitation in the fiber composite. The pressure equalization taking place within at least onetime domain of 0.001-1 s.

A method and apparatus are represented and described for gripping and holding dispensing elements, having a flange and a screw cap, for subsequent application onto packages, wherein the dispensing elements are linearly supplied to the apparatus in an aligned position and wherein each dispensing element is gripped individually by gripper jaws of a gripping device and is applied by means of its flange onto a package. In order that an applicator with smaller structural height can, even in the case of higher speeds, also reliably provide packages comprising an oblique gable with a dispensing elements, the following steps are provided: raising each gripping device into a start position above the supplied dispensing elements, lowering each gripping device with opened gripper jaws from their highest position to a dispensing element provided therebelow, wherein the transport speed of the gripping device and the transport belt are synchronised, pulling a dispensing element with opened gripper jaws to a flat delivery region, gripping a dispensing element by closing the gripper jaws, lowering each gripping device with gripped dispensing element to a package transported therebelow in an application position, pressing the dispensing element onto the package for a predefined time, and releasing the applied dispensing element and raising each gripping device to receive a newly-supplied dispensing element.

An ultrasonic welding system. The system includes an ultrasonic transducer assembly having a horn and a first transducer and a second transducer arranged to impart ultrasonic energy into the horn. The horn has a first part-interfacing surface and a second part-interfacing surface opposite the first part-interfacing surface. An actuator assembly is operatively coupled to the ultrasonic transducer assembly and configured to cause rotation of the horn. A controller is configured to: cause the actuator assembly to rotate the horn so that the first part-interfacing surface applies the ultrasonic energy to a first part along an entire length of the first part-interface surface while a first ultrasonic energy is applied through the horn via the first transducer to cause the first part-interfacing surface to vibrate back and forth along its entire length as the first ultrasonic energy is applied by the first transducer to the horn.

A packaging material having a core layer and inside and outside laminate portions is provided. The packaging material comprises a first area to form a first package, and a second area to form a second and adjacent package. The first area and the second area have a transversal sealing area between them, and the core layer is provided with at least one weakening portion at the transversal sealing area.

An ultrasonic sealing device including a sonotrode for sealing a packaging material, including a piezoelectric transducer to generate ultrasonic acoustic vibrations for the sealing, a housing, a power circuit connected to the piezoelectric transducer. The power circuit is enclosed in the housing, and an absorbent arranged in the housing to absorb moisture in an atmosphere therein to lower humidity. A method of controlling humidity in an ultrasonic sealing device is also described.