The invention relates to a method (100) for congruent alignment of a first polygonal multi-edge geometry (2) of a rotor shaft (3) of a dynamic mixer (4) with a second polygonal multi-edge geometry (5) of a drive shaft (6) of a motor (7) of a mixing apparatus (8), and optionally insertion of the second polygonal multi-edge geometry (5) of the drive shaft (6) of the motor (7) of the mixing apparatus (8) into or onto the first polygonal multi-edge geometry (2) of the rotor shaft (3) of the dynamic mixer (4), as well as a dynamic mixer for use in the method as also use of the mixer in the method.

Methods, apparatus, devices and systems for mixing and dispensing multi-component materials. The mixing and dispensing may be performed using a mobile, enclosed dispenser that can be used to supply a mixed multi-component material at the point of use. In some embodiments, the components to be mixed into the multi-component material may be supplied in cartridges.

A metering system for applying a bead of a multi-component composite material to a component. The metering system comprises a mixing head including a mixing chamber. The metering system includes one supply line for each component of a multi-component composite material, leading from a source of each component to the mixing chamber. The mixing chamber is configured to mix the components of the multi-component composite material in the mixing chamber and has an outlet opening through which the mixed multi-component composite material exits the mixing head. The metering system includes a metering pump to convey a discharge of the multi-component composite material through the outlet opening. The metering system includes a control unit to output, to the metering pump, a control signal comprising control information and adjust a metering output of the multi-component composite material through the outlet opening of the mixing head based on the control signal.

An extruder includes: a supply module; a mixing module to form an electrode slurry by mixing an active material, a binder, and a conductive material from the supply module; a discharge module to discharge the electrode slurry; and a sensor to measure a characteristic value of the electrode slurry. The mixing module includes a first screw and a second screw, the first screw and the second screw including screw threads on an outer circumference thereof to rotate to engage with each other; a barrel including a first barrel and a second barrel accommodating the first screw and the second screw, respectively, and facing each other to form a hole through which the electrode slurry is transmitted; a first gap adjustment module to adjust a gap between the first barrel and the second barrel; and a control module to control the first gap adjustment module based on the measured characteristic value.