A filtering device for highly viscous media, in which filtering device a rotatably mounted screening wheel which has a plurality of screening cavities is arranged between a front housing element and a rear housing element. According to the invention, a plurality of screening cavities lying beside one another, through which flow can pass jointly, are combined into at least one filter group. To this end, on both sides beside the filter group, a closed blocking segment is provided on the screening wheel which segment, when positioned in associated blocking regions of the housing, is sealed off with respect to the housing elements on both sides of the screening wheel. The blocking regions in the housing are in each case larger than or as large as a screening cavity together with a sealing web surrounding the same.

A die plate changing system holds first and second die plates and selectively transitions the first and second die plates into and out of communication with a material source. The die plate changing system has a frame having a body defining a first recess that receives the first die plate and a second recess that receives the second die plate, where the frame is heats the first and second die plates when the first and second die plates are disposed in the first and second recesses, respectively. The die plate changing system also includes a movement assembly operably coupled to the frame and that selectively moves the frame between a first position, where the first die plate receives material from the material source, and a second position, where the second die plate receives the material from the material source.

The device for treating melts of thermoplastics has a housing in which first and second rotatably driven shafts are disposed, a plurality of mixing elements being axially spaced on each shaft. The mixing elements of the first shaft are axially offset from the mixing elements of the second shaft so that they face gaps between the mixing elements of the second shaft. The mixing elements of the second shaft are axially offset from the mixing elements of the first shaft so that they face gaps between the mixing elements of the first shaft. The distance (A) of the first and second shafts from each other and the greatest radial lengths (R) of the mixing elements are dimensioned so that the mixing elements engage in the spaces opposite them.

The device for treating melts of thermoplastics has a housing in which first and second rotatably driven shafts are disposed, a plurality of mixing elements being axially spaced on each shaft. The mixing elements of the first shaft are axially offset from the mixing elements of the second shaft so that they face gaps between the mixing elements of the second shaft. The mixing elements of the second shaft are axially offset from the mixing elements of the first shaft so that they face gaps between the mixing elements of the first shaft. The distance (A) of the first and second shafts from each other and the greatest radial lengths (R) of the mixing elements are dimensioned so that the mixing elements engage in the spaces opposite them.

The present disclosure relates to devices for extruding plastics, notably mixtures of elastomers which are intended to be used in the manufacture of tires.

A filtering plate and a method for making the same and a filtering device having the same are provided. The filtering plate includes: a plate body, integrally formed of metal as one piece; a plurality of holed units, each holed unit penetrating the plate body and including a big hole and a plurality of small holes communicated with the big hole, the small hole being formed by laser processing and having a first end communicated with the big hole and a second end, the first end being greater than the second end in cross-sectional area.

A method of manufacturing a long fiber reinforced thermoplastic filament includes disposing a mixture of fibrous material and thermoplastic material into a hopper of an extruder device and introducing the mixture into the extruder and through an extensional flow die to preserve longer fiber lengths. From the extensional flow die the mixture is passed through a drawing die to create the long fiber reinforced filament.

A production device for manufacturing a product in the form of a sheet or a block, including: an initial agitator (1), a primary conveyor belt (2) and a mixing agitator (3); each of initial agitators (1) is configured with the primary conveyor belt (2), one or more stones or a stone-like granular material having a selected particle size and a binder are initially mixed in the initial agitator (1) and then an initial mixture is obtained; the mixing agitator (3) includes a rotating container for undertaking a material; the initial mixture is conveyed to the mixing agitator (3) through the primary conveyor belt (2); more than one initial agitator and matched primary conveyor belts thereof are disposed around the mixing agitator (3) at intervals.

A method for producing an electrically conductive seamless tube includes (1) preparing an electrically conductive resin composition containing a thermoplastic resin and an electrically conductive filler, (2) preparing a cylindrical extruding die including a cylindrical slit, at least one circumferential distribution channel communicating with the slit and distributing the resin composition that is plasticized in a circumferential direction of the slit, and at least one lead-in path that leads the plasticized resin composition into the circumferential distribution channel, the lead-in path containing a line mixer; (3) introducing the plasticized resin composition into the lead-in path toward the circumferential distribution channel; (4) introducing the plasticized resin composition flowing through the lead-in path into the circumferential distribution channel toward the slit; and (5) introducing the resin composition flowing through the circumferential distribution channel into the slit and extruding the resin composition from an outlet of the slit into a cylindrical shape.

A seed treatment system incorporates an incline conveyor to mix freshly treated seed. A metered seed flow is maintained. A treatment applicator positioned above a tail end of the incline conveyor applies a seed treatment to the metered seed flow to form a treated seed flow. The treated seed flow freefalls into a transition zone and pre-mixes before moving upward within the incline conveyor. An eddy may form within the treated seed flow due to a partial obstruction within the incline conveyor. A prescribed amount of the treated seed flow backflows into the eddy in a cascading manner. Backflow movement may be contrary to conveyance of a substantial amount of the treated seed up through the incline conveyor. The seed treatment distributes about the treated seed flow within the incline conveyor. The treated seed flow discharges with complete cleanout at a head end of the incline conveyor.