The present invention relates to a device for the ultrasonic processing of materials, which has an ultrasonic processing system, which comprises: an ultrasound generator, a converter (12), a sonotrode (16), and a counter tool (18); wherein the sonotrode (16) and/or the counter tool (18) has a substantially cylindrical sealing surface having at least one elevation (45) and can be rotated such that, during the processing, the elevation (45) rotates about the axis of rotation and comes in contact with the material web (20) during a sealing time, wherein a control apparatus (24) is provided for the ultrasound generator, to which control apparatus a feedback variable from the ultrasound processing system is fed and which control apparatus determines a manipulated variable therefrom and feeds said manipulated variable to the ultrasound generator, wherein a process variable from the processing process is determined and is linked to the manipulated variable determined by the control apparatus (24) before the feeding to the ultrasound generator. In order to provide an improved device for the ultrasonic processing of materials having an ultrasonic processing system, a trigger apparatus (44) is provided, which determines the position of the elevation (45) and is designed to permit or prevent the linking of the process variable to the manipulated variable in accordance with the position determination.

An ultrasonic welding system includes a motion control system that is coupled to and that causes controlled movement of an ultrasonic welding stack, in accordance with control inputs that are based on one or more control signals that are received from one or more sensors. The motion control system initiates a welding operation, subsequent to which an initial motion delay occurs until a predetermined condition is satisfied. Subsequently, in response to the predetermined condition being satisfied, the ultrasonic welding stack is caused to move in accordance with a weld profile. Subsequently, in response to an occurrence of a predetermined delay initiating condition, the ultrasonic welding stack is caused to stop motion and to maintain a stationary position. Subsequently, in response to an occurrence of a predetermined delay terminating condition, motion of the ultrasonic welding stack is resumed in accordance with the weld profile.

The invention relates to a sealing station in a film bag filling device for sealing of film bags after a filling process, wherein the sealing station comprises a first and a second sealing arm for sealing of several filled film bags that are arranged next to one another, wherein the first sealing arm is moveable with a first drive shaft and the second sealing arm with a second drive shaft. A servo engine is disposed on the first drive shaft, and a drive movement of the first drive shaft from a first gear wheel is transferred to a second gear wheel that encroaches in the first gear wheel and from the second gear wheel to the second drive shaft. The invention further relates to a method for sealing of film bags after a filling process with the sealing station according to the invention with the following steps: positioning of filled film bags below the sealing station; closing of the sealing arms and application of a contact pressure with a first value and sealing of the filled film bags.

A form-fill-seal machine 100 has a pull-down belt mechanism 23, a vertical sealing mechanism 2, and a controller 29. The pull-down belt mechanism conveys a cylindrical film Fm. The vertical sealing mechanism applies pressure and ultrasonic oscillation to the cylindrical film which is conveyed by the pull-down belt mechanism, and seals the cylindrical film. The controller controls the pull-down belt mechanism, and the pressure and the amplitude of the ultrasonic oscillation applied to the cylindrical film by the vertical sealing mechanism. The controller applies pressure and ultrasonic oscillation to the cylindrical film immediately before reaching a first point in time when the cylindrical film begins to be conveyed. The controller changes at least one of the pressure and the amplitude of the ultrasonic oscillation applied to the film according to the speed of the film in a time period after reaching the first point in time.

An ultrasonic welding system, for welding together two workpieces wherein at least one of the workpieces includes a polymeric composite, comprising an energy applicator positioned along an action axis so that, in operation, ultrasonic vibrations transmitted from the energy applicator during a welding routine, are transmitted to the workpieces generally at and/or adjacent the axis. The system also includes a primary, course-control, actuator positioned along action axis so that a first load, output by the primary actuator, acts along the system action axis. The system further comprises a secondary, fine-control, actuator positioned along the system action axis so that a second load output, by the secondary actuator, acts along the axis. And the system comprises a controller for providing first command signals and second command signals to the primary actuator and second actuator to control them to effect loads on the workpieces, during the welding routine and along the axis.

A method of anchoring a first object in a second object is described. The first object extends along an axis between a proximal end and a distal end and has a circumferential surface. The circumferential surface comprises at least one helical protrusion of a thermoplastic material. For anchoring, the first object is brought in contact with the second object, and mechanical vibration is coupled into the first object from a proximally facing coupling-in face thereof so as to drive the first object into the second object in a manner that the vibration and pressing cause the first object to be subject to a helical movement relative to the second object and cause thermoplastic material of the first object to become flowable and to penetrate into structures of the second object to yield, after resolidification, a positive fit connection with the second object.

A sealing device for sealing a sealing foil onto a top surface of a primary packaging shell for a contact lens. The sealing device comprises a shell support and a sealing head comprising a contact surface facing downwardly. The sealing device comprises at least one linear actuator for performing a vertical relative movement of the shell support and the sealing head to press the sealing foil against the top surface of the primary packaging shell. The sealing device comprises a foil holder for holding the sealing foil in a vertical gap between the contact surface of the sealing head and the top surface of the primary packaging shell. The sealing foil is sealed to the top surface of the primary packaging shell when the shell support and the sealing head move towards each other.

The invention pertains to a composite part with a fibrous reinforcement and a thermoplastic polymer matrix, comprising: substrate part with a matrix of a first thermoplastic polymer having a first melting temperature; stiffener made of a composite material with a matrix of a second thermoplastic polymer having a second melting temperature; comprising the steps of: obtaining an unconsolidated preform of the substrate part; obtaining a preform of the stiffener; integrating a layer of the first thermoplastic polymer into the preform of the stiffener at a location configured to be in contact with the substrate part; and subjecting the substrate part and the preform of stiffener to a thermomechanical cycle so as to consolidate the substrate part and weld the stiffener to the substrate part.

A method of mechanically securing a first object to a second object, wherein the first object has a thermoplastic material in a solid state, the second object has a generally flat sheet portion having a second object edge. A third object is provided and arranged to provide an assembly including the first, second and third objects, in which assembly the second object edge is in contact with the thermoplastic material. Mechanical vibration energy is coupled into the assembly by means of a vibrating tool until a flow portion of the thermoplastic material due to friction heat generated between the second object edge and the thermoplastic material becomes flowable and flows around the second object edge to at least partially embed the second object edge in the thermoplastic material and the third object is caused to be embedded at least partially in the thermoplastic material of the first object.

A method for manufacturing a thermally protected polymer composite structure using a thermal barrier layer, the thermal barrier layer being porous and including a tool-side surface and a non-tool-side surface opposed from the tool-side surface, the method including co-bonding an adhesive onto the non-tool-side surface of the thermal barrier layer to yield a coated thermal barrier layer comprising a coated surface, and co-bonding a polymer matrix composite material onto the coated surface of the coated thermal barrier layer.