Abstract: Disclosed is an apparatus for obtaining toner particles with improved dispersion of additive components therein comprised of a toner extrusion device containing therein a blending chamber, a screw mixing means, a heating means, a toner supply means, and a means for injecting the additive components into the extrusion device enabling a decrease in the melting temperature of the toner resin particles contained therein.

Abstract: A process and a degassing unit for the degassing of plastic melt in a screw extruder in which a surface of the degassing unit facing the screws of the extruder are heated to prevent deposition of entrained plastic particles, particularly at the corners or edges of the degassing unit. Prior to the commencement of the treatment process, the degassing unit is heated to a temperature which is at least as high as the melting point of the plastic to be treated. Heating can be effected by conveying a heating medium through a channel in the degassing unit located in proximity to the surface facing the extrusion screws and especially the corner or edge regions.

Abstract: The present invention provides an extrusion apparatus having an improved mechanism for thermally-controlled, lip gap adjustment. The apparatus includes a flow path for a gaseous cooling medium, in which flow path a plurality of temperature-responsive, lip gap adjustment members are disposed. Structurally associated with each such adjustment member is a heating wire.

Abstract: An apparatus for forming a particle mat for the production of particleboard has a transport belt having a stretch moving in a longitudinal transport direction and forming a deposition surface in turn defining a floor of a deposition space, a dispenser upwardly delimiting the space and including a dispensing roller for depositing particles as a mat in the space on the longitudinal moving deposition surface, a pair of transversely spaced and longitudinally extending upper guides extending in the space generally at the dispenser, and a pair of transversely spaced and longitudinally extending lower guides extending in the space underneath the respective upper guides and generally at the deposition surface. A pair of longitudinally extending, continuous, and transversely spaced flexible sheets each extend the full longitudinal length of the deposition space and have an inner edge secured to one of the guides of a respective one of the pairs of guides and an outer edge.