Werner & Pfleiderer Gmbh

Franz J Muller

Albert Grimminger

Edgar Schlipf

Heinz Herrmann

Wolfgang Lauser

Gerhard Pfaff

Hans-Jurgen Nettelnbreker

A compact plant for the post-treatment of wet plastic granules in which a rotatable or longitudinally displaceable conveyor-separator is movable between positions in which the wet granules are selectively dewatered or diverted from flowing to a dryer. A water tank is located below the conveyor-separator for receiving water or wet granules therefrom. Water separated in the dryer is also supplied to the water tank. A replaceable screen cassette is supported in the water tank.

Post treatment plant for plastic granules

A screw-type extruder has a housing and at least one screw which is rotatably arranged in a bore in the housing and which conveys material while melting or plasticizing in a conveying direction to a discharge channel, a starting valve and a throttle for generating a back pressure on the molten or plasticized material being arranged in the area of the discharge channel. In order to avoid long flow paths of the molten or plasticized material via the throttle and starting valve, there is provided a starting valve/throttle unit having a starting valve and throttle body which is displaceable at right angles to the conveying direction out of a starting position into a throttling position.

Screw-type extruder having a starting valve and throttle

A method and apparatus for removing samples from a plastic melt for measuring the rheological properties of the plastic melt in which melt samples are removed from melt in a melt channel through a hollow probe arranged transversely of the direction of flow of the melt, the probe having an opening for the inlet of the melt samples. The probe is elongated and is displaceable along its axis in a direction transverse of the melt channel while being rotatable around its axis so that the inlet in the probe can be placed in various positions in the melt cross section. The opening of the probe is disposed at the periphery of a circle lying in a radial plane around the longitudinal axis whereby samples can be obtained in a three-dimensionally extending region.

Growing community of inventors

Bietigheim-Bissingen, Germany

Franz J Muller