The invention relates to a process for the production of thermoplastic moulding compounds, in particular for the production of acrylonitrile-butadiene-styrene (ABS), wherein at least a first reagent (11) and a second reagent (12) of the thermoplastic moulding compounds are fed to a loop conduit (29) which comprises a static mixer (36), wherein the reagents (11, 12) are pressed in loops through the loop conduit (29) and passing the static mixer (36), whereby the reagents (11, 12) are dispersed to form a dispersion (15) in the static mixer (36). The invention also relates to a thermoplastic moulding compound that is produced by the inventive process.

The invention is a weighing and mixing system for the preparation of mixtures of components required by processing machines for the manufacture of plastic products. In particular the invention is suitable for the preparation of weighed mixtures comprised of at least two different masterbatches in order to obtain the color shade desired for a specific plastic product.

The invention relates to a device (1) and method for the production of plastic parts (2), having a first plastic feed device (3a) for feeding a first liquid plastic starting component (K1); a second plastic feed device (3b) for feeding a second liquid plastic starting component (K2); a mixing device (5) with a mixing chamber (6), wherein in the mixing chamber the liquid plastic starting components that can be fed by the plastic feed devices can be mixed to form a plastic mixture (KG); a discharge nozzle (7) for discharging the plastic mixture; and a cooling device (8) for the mixing device, wherein a drying device (9) surrounding the mixing device at least in regions is provided, wherein the drying device has a separating device (10), a drying chamber (T) formed between the separating device and the mixing device, and a desiccant feeding device (11) opening into the drying chamber.

The invention relates to a device (1) and method for the production of plastic parts (2), having a first plastic feed device (3a) for feeding a first liquid plastic starting component (K1); a second plastic feed device (3b) for feeding a second liquid plastic starting component (K2); a mixing device (5) with a mixing chamber (6), wherein in the mixing chamber the liquid plastic starting components that can be fed by the plastic feed devices can be mixed to form a plastic mixture (KG); a discharge nozzle (7) for discharging the plastic mixture; and a cooling device (8) for the mixing device, wherein a drying device (9) surrounding the mixing device at least in regions is provided, wherein the drying device has a separating device (10), a drying chamber (T) formed between the separating device and the mixing device, and a desiccant feeding device (11) opening into the drying chamber.

In order to be capable of reliably supplying a prescribed amount of fiber materials into a heating cylinder for each cycle and continuously manufacturing a homogeneous composite material, a plasticizing unit is provided with a fiber supply device 3 that supplies prescribed amount of fiber materials A2 having a prescribed length into the heating cylinder 1. The fiber supply device 3 is provided with: a cutting section 12 that cuts off a long fiber material A1 pulled out from a reel 11 into a prescribed length; a pressure-feeding section 13 that presses the fiber materials A2 having the prescribed length cut off by the cutting section 12 into the heating cylinder 1; and a fiber transfer device 45 that forcibly transfers the fiber materials A2 accumulated in the cutting section 12 to the pressure-feeding section 13. The pressure-feeding section 13 is constituted by a press cylinder 41 and a press piston 42, and the fiber transfer device 45 is constituted by a vacuum device.

In order to be capable of reliably supplying a prescribed amount of fiber materials into a heating cylinder for each cycle and continuously manufacturing a homogeneous composite material, a plasticizing unit is provided with a fiber supply device 3 that supplies prescribed amount of fiber materials A2 having a prescribed length into the heating cylinder 1. The fiber supply device 3 is provided with: a cutting section 12 that cuts off a long fiber material A1 pulled out from a reel 11 into a prescribed length; a pressure-feeding section 13 that presses the fiber materials A2 having the prescribed length cut off by the cutting section 12 into the heating cylinder 1; and a fiber transfer device 45 that forcibly transfers the fiber materials A2 accumulated in the cutting section 12 to the pressure-feeding section 13. The pressure-feeding section 13 is constituted by a press cylinder 41 and a press piston 42, and the fiber transfer device 45 is constituted by a vacuum device.

Provided is a screw that is for use in an injection molding machine and that makes it possible to benefit from the kneading effect of a multi-start screw while minimizing the received friction resistance. The screw for an injection molding machine is provided with a first stage 20 on the upstream side and a second stage 30 on the downstream side. The screw for an injection molding machine is characterized in that: the first stage 20 is provided with a compression section 22 comprising a main scraper 25 and an auxiliary scraper 26 having a smaller outer diameter than the main scraper 25; and the second stage 30 is provided with a multi-start screw section 31, said multi-start screw section being provided on the upstream side and comprising a plurality of scrapers, and a fin kneading section 32 provided downstream from the multi-start screw section.

Provided is a screw that is for use in an injection molding machine and that makes it possible to benefit from the kneading effect of a multi-start screw while minimizing the received friction resistance. The screw for an injection molding machine is provided with a first stage 20 on the upstream side and a second stage 30 on the downstream side. The screw for an injection molding machine is characterized in that: the first stage 20 is provided with a compression section 22 comprising a main scraper 25 and an auxiliary scraper 26 having a smaller outer diameter than the main scraper 25; and the second stage 30 is provided with a multi-start screw section 31, said multi-start screw section being provided on the upstream side and comprising a plurality of scrapers, and a fin kneading section 32 provided downstream from the multi-start screw section.

In the field of tire production, the invention relates to methods and systems for creating unvulcanized rubber batches prior to mixing them in a rubber mixer, including selecting at least one batch for mixing in the mixer, wherein each batch corresponds to a selection of rubber bales (A.sub.I, B.sub.I, C.sub.I) each corresponding to a rubber nature (A, B, C) having predefined characteristics, in order to obtain a proportion corresponding to a predetermined proportion, a target weight to attain a difference between (a) the required weight of the batch and (b) the sum of the weight of the bales (A.sub.I, B.sub.I, C.sub.I) and the weight of the pieces (A.sub.IJ, B.sub.IJ, C.sub.IJ).

A mixing paddle configured for use with a gravimetric blender. The mixing paddle has a first rotor; a second rotor spaced axial from the first rotor; and at least one mixing blade disposed between the first rotor and the second rotor. The at least one mixing blade of the mixing paddle includes an inner edge having a first sloped portion and a second sloped portion directed inward toward a middle portion of the at least one mixing blade. The mixing blade is configured to be narrower in the middle portion between the outer edge and the inner edge than at a first end and second end.