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7635217 |
Extruder having variable mid-barrel restriction and adjacent high intensity mixing assembly
Improved, high Specific Mechanical Energy extrusion systems ( 20 ) are provided including a single or twin extruder ( 22 ) and an upstream preconditioner ( 24 ). The extruder ( 22 ) includes an...
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7632006 |
Device for proceeding material by mixing and/or plasticization or agglomeration providing periodic enlargement or reduction to gap between screw channels
A device for processing material by mixing and/or plasticization or agglomeration has a screw housing, in which at least two screws are situated adjacent to one another. The screw channels are...
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7629435 |
Method for producing masticated rubber
A method for producing a masticated rubber, which comprises the steps of masticating rubber at a shear rate of from 500 to 4,500 (l/s); and obtaining masticated rubber having a weight-average...
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7607817 |
Extruder having a set back gas-permeable wall portion
An extruder with a housing comprising parallel, partially inter-engaging bores and screws disposed therein is used when applying a method of feeding powdery bulk materials into such an extruder. A...
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7566163 |
Screw set for extruder
A rotor segment is assembled in a screw set for use in a twin-screw extruder for mixing and dispersing a material to be kneaded into a kneaded product having a desired state of kneading. The rotor...
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7425090 |
Device for dispersing and melting flowable materials
An apparatus for dispersing and melting flowable substances includes axis-parallel supporting shafts rotatable in the same direction. Screw elements with the same direction of thread are fitted on...
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7419295 |
Extruder
An extruder includes a barrel and a kneading screw extending through the barrel in a rotatable fashion. The kneading screw is provided with a devolatilization portion. The devolatilization portion...
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7380973 |
Method and device for the reprocessing of a thermoplastic polycondensate
Method and device for reprocessing a thermoplastic polycondensate, in particular for the recycling of thermoplastic polycondensates, such as polyethylene terephthalate, polyester or polyamide is...
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7354187 |
Rubber kneading machine
A rubber kneading machine obviates an operator having to touch rubber on a rotating roll surface to perform a rubber kneading operation, permits unattended operation, is intrinsically safe,...
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7284897 |
Extruder for continuously working and/or processing flowable materials
An extruder has at least three parallel, co-rotating shafts disposed in a cavity therein along a circle. The shafts are equipped with screw elements closely intermeshing over their whole...
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7270471 |
Extruder
In an extruder for continuous working and/or processing of flowable substances having at least two parallel, corotating shafts equipped with intermeshing screw elements whose face is limited by...
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7244060 |
Kneading apparatus
A kneading apparatus includes a barrel having a chamber, which is a tubular hollow, a biaxial screw set for extruding a material to be kneaded downstream by rotation of the biaxial screw set inside...
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7188992 |
Kneading element and related articles
A modified kneading element for a screw extruder, peripherally congruent, aligned, and contiguous with a cross-sectional profile of a modified conveying element, includes a central portion defining...
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7097345 |
Screw with heat exchange function, mixer and extruder
A screw with a heat exchange function is rotatably fit in a barrel, and includes a heat exchange medium chamber located at a center section in the radial direction, running along the lengthwise...
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7097442 |
Extruder
An extruder capable of obtaining a treatment volume equal to that of the conventional art without enlarging a screw diameter is provided. The extruder includes screw shafts, a drive unit, and a...
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7080935 |
Multi-screw extruder
The invention relates to a multi-shaft extruder for the continuous treatment and/or processing of bulk material, especially a powdery, granular or flocculent product, comprising a plurality of...
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7040798 |
Ring extruder feed
The invention relates to a multi-screw extruder for the continuous treatment and/or processing of a bulk material, especially a product in powder, granular or flake form, comprising several shafts...
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7025491 |
Homogenizing and/or dispersing device comprising endless screws
An apparatus for homogenizing and/or dispersing at least one viscous substance and at least one solid and/or at least one other substance of different viscosity includes in a space in a housing...
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7017732 |
Multiple extruder configuration
The invention concerns a multiple-extruder configuration in which two co-rotating twin-screw extruders and a counter-rotating twin screw extruder are connected to each other with respect to the...
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6997694 |
Extruder
An extruder drive has a housing, at least two extrusion worms each having a drive shaft extending into the housing, and at least one drive motor including at least one cylindrical stator fixed in...
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6989120 |
Heat-vulcanizable silicone compositions from premix
A continuous process of preparing a heat-vulcanizable filled silicone composition, comprises mixing filler and high viscosity silicone polymer continuously in a first co-rotating intermeshing twin...
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6974243 |
Screw element for same-sense rotating multi-screw extruders
A screw element includes an outer radius R a and a core radius R i for multiscrew extruders with co-rotating and intermeshing screw shafts. The screw element has in axial cross section through...
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6913380 |
Continuous preparation of heat-vulcanizable silicone compositions
High levels of treated fumed silica, processing fluid and high molecular weight silicone polymer are continuously compounded into a homogeneous silica filled heat-vulcanizable silicone composition...
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6890091 |
Kneading apparatus, including selectable discharge ports, for kneading rubber or rubber compositions
A continuous kneading apparatus and method are provided wherein discharge ports are provided at a plurality of positions of the barrel to discharge a kneaded product, and one of the plurality of...
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6869211 |
Screw-type extruder
An extruder for processing of thermoplastics has a housing ( 1 ) in which a screw is pivotally supported. A land ( 5 ) which runs in a helical line protrudes from the core ( 4 ) of the screw. There...
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6811294 |
Device and method for degassing plastics
An apparatus for degassing plastic materials, e.g., high molecular weight polycarbonate solutions, is described. The apparatus includes a double-shaft extruder having a length-to-diameter ratio of...
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6783270 |
Fractional and higher lobed co-rotating twin-screw elements
A twin-screw extrude having a novel fractional element has been invented that can provide different tip angles. The twin-screw extruder is suitable for processing thermo plastic, thermo set and...
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6705753 |
Extruder comprising blister mechanism
An extruder for polymer melts, with an extrusion space arranged in an extruder barrel and through which at least one extruder screw shank extends so that it can be rotated by a motor. The screw...
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6682213 |
Twin-screw continuous kneading apparatus and kneading method using the same
A twin-screw continuous kneading apparatus is provided which can stably supply an additive without reducing the production capability and greatly increase the throughput of a high-quality compound....
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6609819 |
Twin screw extruder with conical non-parallel converging screws
An improved twin screw extruder device ( 14 ) is provided which is capable of producing a wide variety of high quality extrudates having greatly varying final properties, without the need for...
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6447156 |
Mixing element for screws and an extruder comprising the mixing element
The mixing element has a central hole for keying to the shaft of the screw and an outer profile which can be produced as a result of the removal of material from a circular element along at least...
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6402360 |
Internal batch mixing machines and rotors
An internal batch mixing machine includes a mixing chamber having a pair of cavities in which a first and a second rotor are mounted adjacent one another and are driven in opposite directions to...
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6382826 |
Compact extruder with multiple parallel screws having a variable pitch arrangement
A compact extruder with multiple parallel screws having a variable pitch arrangement, includes an outer casing which has at least two chambers that contain at least two screws which allow material...
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6302572 |
Back vented barrel for an extruding assembly
A vent passage (28) extends from a main extruder passage (24) and is spaced from and between a feed extruder passage (26) and a back surface (16) of the barrel (10). The barrel (10) is...
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6299340 |
Feeding apparatus and method in spiral engagement of extruder
A feeding method and apparatus are provided for a extruder which is used for processing of rubber, plastic and cellulose etc. The feeding apparatus comprises an inlet, through which the materials...
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6287470 |
Two-step method for dehydrating plastic dispersions
The invention relates to a method for dehydrating a two-phase liquid mixture consisting of a thermoplastic synthetic melt phase and an aqueous phase, comprising the following steps: a) coagulation...
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6227693 |
Multi-shaft screw machine with stop assemblies for individually setting the positions of the screw elements
In order to position the screw elements (6) axially precisely on the shafts (1) of a multi-shaft screw-type machine, a split stop ring (8) against which the screw elements (6) are prestressed is...
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6190031 |
Machine for continuous processing of flowable materials having a housing jacket divided into long and short segments
A machine for continuous processing of flowable materials has a plurality of axis-parallel shafts in a space in a housing along a circle. Each shaft includes shaft bearing processing elements which...
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6179460 |
Twin screw extruder with single-flight kneading disks
A twin screw extruder has a casing with a working direction, two partially intersecting casing bores, which are parallel to each other, two shafts, which are disposed in the casing bores and which...
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6170975 |
Multi-shaft extruder kneading discs, kneading disc blocks and extruder
There is provided a multi-shaft kneading disc, kneading disc block, and a multi-shaft extruder containing the same. The kneading disc and each kneading disc in the kneading disc block having a disc...
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6165399 |
Process for producing thermoplastics
A process for preparing thermoplastics or polymer blends comprising (A) from 5 to 95% of a water-moist elastomer component containing up to 60% of residual water, (B) from 5 to 95% of a...
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6136246 |
Screw extruder with improved dispersive mixing elements
A screw extruder (10) having a barrel (18) which has a bore (26) defining an inner surface (44) and one or more extruder screws (28), positioned within the bore (26). The extruder screw or screws...
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6116771 |
Multi-shaft extruder screw bushing and extruder
A single flighted multi-screw conveying bushing that has only one helical screw element extending the length of the bushing. The bushing has a cross-section shape that has a segmented circular base...
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6116770 |
Mixing element for screw extruder
A mixing element for a screw extruder comprises an element including opposing lobes and a central portion having common opposing broad surfaces; one lobe broad surface being formed into a taper....
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6106142 |
Pressure variable, multiscrew, continuous mixing machine for plasticizable compounds with variable height backfeed threads
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6068466 |
Twin type continuous kneading extruder
A twin shaft continuous kneading extruder has a twin kneading feeder portion provided with two passages juxtaposed to each other within a casing. The passages are cocoon-shape in cross-section and...
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6062719 |
High efficiency extruder
A corotating multiple-screw extruder comprising first and second intermeshing screws of more than one flight. The first screw comprises first and second segments paired with first and second...
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6048088 |
Multi-shaft screw-type extruder, in particular twin-shaft extruder
A multi-shaft screw-type extruder having a casing with two parallel intersecting casing bores and two shafts drivably disposed in the casing bores. Screw elements intermeshing kneading disks are...
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6024479 |
Screw extruder mechanism, in particular twin-screw extruder mechanism, for the processing of strongly outgassing materials
A screw extruder mechanism for the processing of strongly outgassing materials comprises a main extruder for proper material processing, a material feed and discharge device and a degassing device...
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6022133 |
Multiple-screw extruder
A multiple-screw extruder in which paired co-rating screws, or segments thereof, contain unequal numbers of flights; and a screw for use in such extruder.
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