Abstract: A gravimetric blender has a frame, at least one material storage hopper at the top of the frame including a hopper cover, a weigh bin located within the frame, below the hopper, for receipt of material from the hopper to be weighed and being adapted for downward discharge of the material in the bin after the material received from the hopper has been weighed, at least one load cell connecting the weigh bin to the frame for sensing the weight of contents of the weigh bin, a mixer within the frame below the hopper, for mixing material weighed in the weigh bin after that material falls downwardly from the weigh bin to the mixer, and a guide adapted for vertical movement of the hopper cover therealong between positions which the cover contacts and thereby closes the hopper and at which the cover is spaced vertically but maintained in a horizontal plane above the hopper so that the hopper is open at the top.

Abstract: The present invention provides a kneading device including a hopper having a hopper body that stores raw powder, and a mixer that kneads material to be kneaded, which contains the raw powder, wherein the hopper includes a stirring device that stirs the raw powder in the hopper body, and a temperature-controlled air supply device 6 that supplies temperature-controlled air into the hopper body. This kneading device can stably prepare high-quality kneaded dough.

Abstract: Process for extrusion of polymer by feeding a polymer feedstock to the feed port of an extruder having (i) two or more barrel sections arranged sequentially from (a) an upstream feed barrel section to which polymer feedstock to be extruded is fed, the upstream feed barrel section containing two screws each having a diameter of X, to (b) a downstream barrel section from which melted polymer is passed to a die and extruded, and (ii) a feed port for feeding polymer feedstock to be extruded into the extruder at its upstream end. The polymer feedstock is in the form of a powder, and the feed port area is a rectangular shape with width limited by the width of the upstream feed barrel section to 2*X and with a length greater than 2.5*X. The total area of the feed ports through which polymer feedstock is introduced is greater than 5*X2.

Abstract: A plastication unit for an injection molding machine, combining a heated plastication barrel with an entrance port and an exit port on opposing ends of the barrel; a hopper positioned to deliver ingredients to be compounded for injection molding to the entrance port of the barrel; and a helical plastication screw rotatably carried within the barrel and running the length of the barrel between the entrance and exit ports, which is operable to rotate and transmit the ingredients along the length of the barrel; wherein the plastication screw has at least one axial fluted extensional mixing element segment and the ingredients include at least one polymer for injection molding. Methods for injection molding with the plastication unit of the present invention and articles formed by the inventive methods are also disclosed.

Abstract: A batch mixer having a barrel which forms a cylindrical sealed chamber having a section consisting of two mutually communicated circles, and two rotors housed in the chamber to mix a mixing material by rotation, at least one of the inner wall of the barrel and the surface of the rotor having a plurality of recessed parts or protruding parts. The recessed parts or protruding parts are formed of grooves or projections extended in the direction crossing to the rotating direction of the rotor rotated in the chamber to mix the material. According to this structure, a batch mixer excellent in the controllability of material temperature during mixing can be provided.

Abstract: A screw extruder is presented including a feed hopper for receiving materials and a body member having at least one supply port and at least one outlet port. The screw extruder also includes a screw positioned within the body member and movable along a channel defining a longitudinal axis. The screw extruder further includes a drive shaft for rotatably driving the screw along the channel. The screw extruder may be configured to mix the materials received via the feed hopper with a series of one or more forward, neutral, and reverse kneading elements.

Abstract: The invention relates to an apparatus and a method for the processing of plastic material, with a receptacle or cutter-compactor (1) into which the material to be treated can be introduced, in the lower region of which a discharge opening (10) is provided, through which the processed material can be ejected from the receptacle (1), for example into an extruder (11). According to the invention, the receptacle (1) is divided into at least two chambers (6a, 6b, 6c, . . . ) separated from each other by an intermediate base (2?, 2?, . . . ), wherein at least one mixing or comminution tool (7a, 7b, 7c, . . . ) is arranged which acts upon the material in each chamber (6a, 6b, 6c, . . . ), with which the material can be converted into a softened but permanently lumpy or particle-shaped and not melted state and wherein means (5?, 5?, . . . ) are provided which effect or permit an exchange or a transfer of the softened, lumpy, not melted material between each directly adjacent chamber (6a, 6b, 6c, . . . ).

Abstract: The present invention provides a kneading device 1 including a hopper 2 having a hopper body 4 that stores raw powder, and a mixer 3 that kneads material to be kneaded, which contains the raw powder, wherein the hopper 2 includes a stirring device 5 that stirs the raw powder in the hopper body, and a temperature-controlled air supply device 6 that supplies temperature-controlled air into the hopper body 4. This kneading device can stably prepare high-quality kneaded dough.

Abstract: The invention relates to a mixer comprising tools (6a, 6b) and a frame which supports (i) a bowl (5) for the material to be mixed and (ii) motorization means (4, 8) for rotating the mixing tools (6a, 6b). According to the invention, each mixing tool (6a, 6b) comprises a shaft which is mounted to the base of the bowl (5) such that it can rotate and which co-operates with the motorization means (4, 8) in order to rotate the mixing tools (6a, 6b).

Abstract: An apparatus for filling a screw (7) bearingly supported within a housing (6), in particular of an extruder, for processing of pre-comminuted synthetic plastics material, in particular PET, has a filling opening (5) for the screw housing (6). This filling opening (5) is in flow connection with the lower outflow opening (4) of an upright receptacle 81) for the material to be processed. Within the receptacle (1), tools (30, 31) circulate around a, preferably vertical, axis, which tool act onto the material positioned within the receptacle (1). This material is introduced into the evacuable receptacle (1) through a sluice (60). A quickly circulating tool (30) for creating a mixing cone (71) is disposed between an upper interior portion (68) and a lower interior portion (69) of the receptacle (1).

Abstract: A dough processing device has a support frame, a dough feed device, a dough portioning device, a dough kneading device and a dough transfer device. The latter transfers at least one dough portion from at least one portioning chamber of the dough portioning device to at least one kneading chamber of the dough kneading device during transfer time periods. An adjustment device serves for defining a vertical distance between the transfer device and the kneading chamber. This results in a dough processing machine in which a reliable transfer of dough portions from the at least one portioning chamber to the at least one kneading chamber is ensured even in the case of a high throughput.

Abstract: The invention provides an injection molding capable of adjusting a detection level with a simple structure and detecting a deposit level of the resin pellets near a plasticizing screw. A cooling jacket is mounted so that a resin supplying hole of the cooling jacket communicates with a resin supplying hole of a heating cylinder. A sensor head mounted on a sensor mounting plate is inserted into the resin supplying hole through a sensor insertion port provided on a hopper plate and a resin inlet and detects the deposit level of the resin pellets deposited in the resin supplying hole. Changing the extent of insertion of the sensor head enables the resin pellets deposit detection level to be changed, and further, enables the deposit level near the outer periphery of the screw to be detected. Setting the sensor detection direction perpendicular to the resin deposit direction enables dirtying of the sensor detection surface by the resin pellets to be reduced, thus enabling erroneous detection readings to be reduced.

Abstract: An apparatus for filling a screw (7) bearingly supported within a housing (6), in particular of an extruder, for processing of pre-comminuted synthetic plastics material, in particular PET, has a filling opening (5) for the screw housing (6). This filling opening (5) is in flow connection with the lower outflow opening (4) of an upright receptacle 81) for the material to be processed. Within the receptacle (1), tools (30, 31) circulate around a preferably vertical axis, and they act on the material positioned within the receptacle (1). This material is introduced into the evacuable receptacle (1) through a sluice (60). A quickly circulating tool (30) for creating a mixing cone (71) is disposed between an upper interior portion (68) and a lower interior portion (69) of the receptacle (1).

Abstract: A device for admixing a liquid into flowable dry materials has a housing with a mixing chamber having an inner wall with an impact area and an exit opening at a bottom end of the mixing chamber. Dry material is supplied from above into the mixing chamber and falls downwardly toward the impact area in front of the inner wall of the mixing chamber and exits through the exit opening. A nozzle generates a pressurized high-speed jet of a liquid impacting on the inner wall of the mixing chamber in the impact area and wetting the dry material with the liquid as the jet passes through the dry material and impacts against the inner wall. An opening inside the housing is provided for supplying liquid and pasty additives, wherein the opening is directed toward an area of the mixing chamber between the nozzle and the impact area.

Abstract: A feed device extends the run time for manufacturing explosive materials. The feed device includes a feed hopper for retaining processing materials where the feed hopper includes an access at the top of the feed hopper for inputting processing materials and an extender attached to the top of the feed hopper. The extender includes at least one baffle fixed within the interior of the extender. Processing material is conveyed from the extender through the access and into the feed hopper.

Abstract: A dough treatment facility comprises, among other things, a dough kneading arrangement, which comprises an inner kneading drum, an outer kneading drum which is moved in relation thereto within the scope of a kneading motion, and a plurality of kneading compartments which are at least partially defined by the kneading drums. The kneading motion is actuated by means of a kneading drive. This drive comprises a first drive component for rotation of the inner kneading drum, a second drive component for rotation of the outer kneading drum, and a third drive component for periodic motion of the outer kneading drum relative to the inner kneading drum, this motion having a motional component parallel to the longitudinal axis of the kneading drums. A kneading drive gear actuates the driving motions of the three drive components, derived from the motion of a single transmission shaft.

Abstract: A dough treatment facility comprises a dough feeder, a dough metering arrangement, a dough kneading arrangement, a transfer arrangement disposed between the dough metering arrangement and the dough kneading arrangement as well as a dough discharge arrangement. A delivery piston, which is driven by a drive mechanism, forms part of the dough metering arrangement. A drive component of the drive mechanism comprises a load sensing device, which is disposed for sensing the load by which the delivery piston, when pressing the dough, acts on the dough.

Abstract: An apparatus for filling a screw (7) bearingly supported within a housing (6), in particular of an extruder, for processing of pre-comminuted synthetic plastics material, in particular PET, has a filling opening (5) for the screw housing (6). This filling opening (5) is in flow connection with the lower outflow opening (4) of an upright receptacle 81) for the material to be processed. Within the receptacle (1), tools (30, 31) circulate around a, preferably vertical, axis, which tool act onto the material positioned within the receptacle (1). This material is introduced into the evacuable receptacle (1) through a sluice (60). A quickly circulating tool (30) for creating a mixing cone (71) is disposed between an upper interior portion (68) and a lower interior portion (69) of the receptacle (1).