US3169752A - Homogenizing device for extruding or injecting machines in the treatment of thermoplastics - Google Patents
Homogenizing device for extruding or injecting machines in the treatment of thermoplastics Download PDFInfo
- Publication number
- US3169752A US3169752A US132620A US13262061A US3169752A US 3169752 A US3169752 A US 3169752A US 132620 A US132620 A US 132620A US 13262061 A US13262061 A US 13262061A US 3169752 A US3169752 A US 3169752A
- Authority
- US
- United States
- Prior art keywords
- knife
- extruding
- thermoplastics
- casing
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
- B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
- B29B7/422—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw sections co-operating, e.g. intermeshing, with elements on the wall of the surrounding casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/68—Barrels or cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/68—Barrels or cylinders
- B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
- B29C48/687—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having projections with a short length in the barrel direction, e.g. pins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
Definitions
- the present invention has for its object a homogenizing device adapted to be interposed in any suitable location in the path followed by the material in an extruding or injecting machine.
- Said device is essentially characterized by the fact that the same may be adjusted to adapt itself to homogenize masses having different viscosities without it being necessary, as been the common practice in the past, to change the combs, the teeth of which extended into circular grooves in a rotating member of the type described in US. Patent No. 2,631,016.
- the combs previously used are replaced by adjustable rotatable knives or plows, which are mounted upon a housing and enter helical grooves provided in the circular ribs of the rotat ing member which rotates within said housing.
- the knives comprise at the lower part thereof a base in the shape of a truncated cone, which base ends in a point or in a flat part forming a knife, said base bearing upon a corresponding seat on the housing internal wall, having a complementary shape.
- the knives which extend into the interior of the housing are provided at the end which protrudes outside of the housing with an internally threaded socket which receives a mating externally threaded rod which comprises a square cross-sectional part, a ring being slidingly mounted thereon, which is provided with teeth inclined to the axis thereof and adapted to engage corresponding notches made in a coaxial cup provided on the aforementioned housing.
- the knife can be rotated only by sliding the ring outwardly on the rod until its teeth clear the notches in the wall of the cup, after which locking of the knife in the adjusted position is insured by reengagement of the ring with the housing.
- each circular rib of said rotating member there is positioned, between each circular rib of said rotating member, a knife adapted to be turned at will.
- FIG. 1 is an axial sectional view through a homogenizing device comprising a single rotating member, provided with helical grooves in circular ribs, rotating within a housing in which are mounted the adjustable swivelling knives characteristic of this invention;
- FIG. 2 is a sectional view along the line IIII in FIG. 1;
- FIG. 3 is an enlarged section of an adjustable knife and the control device thereof
- FIG. 4 shows said knife in the course of being disengaged prior to the adjustment
- FIG. 5 shows the same knife in the course of being adjusted.
- the device embodying this invention comprises essentially a rotating member 2, which rotates within a case or housing 1 and is provided with a helical rib 3 and circular ribs 4 at the end thereof. Said ribs 4 have three helical grooves 5 through which the thermoplastic material is caused to flow when said member 2 rotates within housing 1.
- the housing 1 is provided at its outlet end with an extension 6 forming a sleeve, which is coaxial with housing 1 to which it is attached by means of a bayonet joint through a pinion gear 7 meshing with a ring gear 8.
- an extension 6 forming a sleeve, which is coaxial with housing 1 to which it is attached by means of a bayonet joint through a pinion gear 7 meshing with a ring gear 8.
- the recesses 9 for the knives 10 which are disposed between circular ribs 4 and in alignment with said helical grooves 5, four grooves being provided in the described form of this invention.
- Said knives which work on the flow of the thermoplastic mass which is constrained to pass through helical grooves 5, are adapted to be axially rotated by means of a control which is more particularly visible in FIGS. 3, 4 and 5.
- Each knife 10 is made in two parts.
- the inside part 10a forming the knife itself comprises a base 11 in the shape of a truncated cone which terminates in a point having a quadrangular section or thinner part forming a cutting blade which penetrates into the helical groove without engaging the bottom of the latter.
- Said base is adapted to bear against the seat in the internal surface of sleeve 6, so that fluid tightness can be insured despite the large pressures which are developed during the operation of the apparatus.
- the other part 1d!) of the knife is screw-threaded into said part 10a and said part 10b comprises a body having an externally threaded portion between an upper part and a lower part having both a square section.
- a ring 12 On the lower part having a square section is mounted a ring 12, having preferably a cross-section in the shape of a truncated cone provided with external teeth adapted to mesh with corresponding notches in the recess 9 of sleeve 6.
- Said ring 12 is maintained engaged in said recess 9 by a nut 12a mounted on the screw-threaded body 1012 of knife 10.
- An operating arm 13 (see FIG. 5) is adapted to be fixed on the upper square cross-sectional part of the knife.
- each knife is locked in position by a retaining lug 14 fixed to sleeve 6 by bolts 15.
- a disc (not shown) can be provided on the fixing lug 14 of each knife, said disc bearing indicia over which moves an index engraved on the upper part of the knife.
- a device for homogenizing plastic material comprising an internally cylindrical casing, and an elongated member mounted axially of said casing for rotation therewithin, said elongated member being provided with a plurality of parallel annular ribs brushing the internal Wall of said casing, and said ribs being interrupted by helically aligned passageways extending therethrough the improvement which comprises flow regulating means positioned between said ribs in helical alignment with said passageways, and means extending through said casing for adjusting the position of said flow regulating means.
- a device as claimed in claim 1 in which said flow regulating means are. rotatably mounted vanes having a greater width in one direction transverse to the axes of their supporting means than in another such transverse direction.
- a device as claimed in claim 2 comprising releasable means for locking said vanes in any one of a plurality of predetermined fixed positions.
- a device for. homogenizing plastic material comprising an internally cylindrical casing and an elongated member mounted axially of said casing for rotation therewithin, said elongated member being provided with a plurality of parallel annular ribs which brush the internal wall of said casing, and said ribs being interrupted by passageways extending therethrough, the improvement which comprises flow regulating means positioned between said rings, and rotatable means extending through the wall of said casing for supporting and adjusting the position of said flow regulating means.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Crushing And Pulverization Processes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR836444A FR1272982A (fr) | 1960-08-22 | 1960-08-22 | Dispositif homogénéiseur perfectionné pour machine à extruder ou à injecter lesmatières thermoplastiques |
Publications (1)
Publication Number | Publication Date |
---|---|
US3169752A true US3169752A (en) | 1965-02-16 |
Family
ID=8737797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US132620A Expired - Lifetime US3169752A (en) | 1960-08-22 | 1961-08-21 | Homogenizing device for extruding or injecting machines in the treatment of thermoplastics |
Country Status (8)
Country | Link |
---|---|
US (1) | US3169752A (fr) |
BE (1) | BE607376A (fr) |
CH (1) | CH373168A (fr) |
DE (1) | DE1245584B (fr) |
ES (1) | ES270416A1 (fr) |
FR (1) | FR1272982A (fr) |
GB (1) | GB924635A (fr) |
NL (2) | NL136122C (fr) |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3377297A (en) * | 1963-07-15 | 1968-04-09 | Goodyear Tire & Rubber | Method for producing polyurethane foams |
US3496604A (en) * | 1966-10-31 | 1970-02-24 | Vickers Zimmer Ag | Worm melter and extruder |
US3570654A (en) * | 1968-03-21 | 1971-03-16 | Gen Eng Radcliffe | Conveying screw for extrusion machines and the like |
US3652064A (en) * | 1968-03-22 | 1972-03-28 | Uniroyal Englebert Ag | Apparatus for conveying plastic material |
US3687423A (en) * | 1968-12-21 | 1972-08-29 | Werner & Pfleiderer | Continuously operating screw machine for the treatment of plastic masses |
DE2744583A1 (de) * | 1977-10-04 | 1979-04-05 | Heinz Dipl Ing Weber | Doppelschneckenextruder |
US4178104A (en) * | 1972-07-21 | 1979-12-11 | Uniroyal, Ag | Method and apparatus for mixing viscous materials |
US4199263A (en) * | 1972-07-21 | 1980-04-22 | Uniroyal Ag | Method and apparatus for mixing viscous materials |
FR2580984A1 (fr) * | 1985-04-30 | 1986-10-31 | Gumix Sa | Extrudeuse-turbomelangeuse dont le cylindre est muni de galettes directrices |
DE3613612A1 (de) * | 1985-04-30 | 1986-11-06 | Gumix S.A., Barcelona | Turbomisch-strangpresse |
US4629327A (en) * | 1985-01-29 | 1986-12-16 | Hermann Berstorff Maschinenbau Gmbh | Pin-barrel extruder having adjustable pins |
US4629326A (en) * | 1985-02-23 | 1986-12-16 | Hermann Berstorff Maschinenbau Gmbh | Pin-barrel extruder having adjustable pins |
US4658762A (en) * | 1986-02-10 | 1987-04-21 | Gas Research Institute | Advanced heater |
US4664620A (en) * | 1986-02-10 | 1987-05-12 | Gas Research Institute | Heater with zone-controlled radiant burners |
EP0303728A1 (fr) * | 1987-08-21 | 1989-02-22 | Schumacher, Walter Dr. Ing. | Dispositif pour extruder, expanser et/ou traiter thermiquement des matières ou des mélanges de matières |
EP0308141A2 (fr) * | 1987-09-15 | 1989-03-22 | Farrel Corporation | Appareil rotatif d'usinage et procédé de mélange extensif et dispersif |
EP0517118A1 (fr) * | 1991-06-03 | 1992-12-09 | FRIEDRICH THEYSOHN GmbH | Dispositif pour la plastification de matière plastique |
US5255973A (en) * | 1991-06-11 | 1993-10-26 | Friedrich Theysohn Gmbh | Plastifier with throttle means |
US5304054A (en) * | 1991-04-19 | 1994-04-19 | Frenkel C-D Aktiengesellschaft | Plasticizing sections of cold feed rubber extruders |
US5480227A (en) * | 1992-12-28 | 1996-01-02 | Krupp Maschinentechnik Gmbh | Screw extruder with shear-controlling diagonally extending pins |
US5836689A (en) * | 1996-05-10 | 1998-11-17 | Voith Sulzer Stoffaufbereitung Gmbh | Device for kneading high-consistency fiber pulp |
US20030185092A1 (en) * | 2001-08-15 | 2003-10-02 | Morinaga & Co., Ltd. | Kneading device and ropesizer |
US20170106579A1 (en) * | 2015-10-19 | 2017-04-20 | Sumitomo Rubber Industries, Ltd. | Extruder |
US20210353105A1 (en) * | 2020-05-15 | 2021-11-18 | Rich Products Corporation | Injection-moldable aerator mixing rod and method of manufacturing thereof |
CN113878844A (zh) * | 2021-09-28 | 2022-01-04 | 北京工商大学 | 一种性能优化的异向双螺杆挤出机 |
US11504680B2 (en) * | 2017-10-17 | 2022-11-22 | Buss Ag | Double-bladed worm shaft for a mixing and kneading machine, wherein each of the blade elements has an elliptic, oval, or bioconvex outer peripheral surface in the top view |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2235784C3 (de) * | 1972-07-21 | 1986-01-09 | Uniroyal Englebert Reifen GmbH, 5100 Aachen | Einschnecken-Extruder zum Mischen und Homogenisieren von hochviskosen Kautschukmischungen und hochviskosen Thermoplasten |
DE2650248C2 (de) * | 1976-11-02 | 1985-06-05 | Heinz Dipl.-Ing. 8640 Kronach Weber | Schneckenextruder zur Verarbeitung plastifizierbarer Kunststoffe |
DE2758266C2 (de) * | 1977-12-27 | 1982-11-25 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover | Einrichtung zur Regelung des Durchsatzes eines an einem Polymerisationssystem angeschlossenen Ein- oder Doppelschneckenextruder |
DE3003615C2 (de) * | 1980-02-01 | 1984-03-29 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover | Schneckenstrangpresse mit Stiftzylinder |
DE3438649A1 (de) * | 1984-10-22 | 1986-04-24 | Windmöller & Hölscher, 4540 Lengerich | Einschneckenstrangpresse fuer thermoplastische und elastomere massen |
DE3805849A1 (de) * | 1988-02-25 | 1989-09-07 | Krupp Gmbh | Stiftextruder |
DE3816422C2 (de) * | 1988-05-13 | 1996-08-14 | Krupp Ag | Stiftextruder |
DE3841728C1 (de) * | 1988-12-10 | 1990-03-01 | Hermann Berstorff Maschinenbau Gmbh, 30627 Hannover | Ein- oder Doppelschneckenextruder zum Einarbeiten von pulverförmigen oder faserförmigen Additiven in eine thermoplastische Kunststoffschmelze |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1935050A (en) * | 1930-11-29 | 1933-11-14 | Farrel Birmingham Co Inc | Machine for plasticating materials |
US2813302A (en) * | 1954-10-20 | 1957-11-19 | Gen Tire & Rubber Co | Method of and apparatus for homogenizing plastic or plasticizable materials |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1283947A (en) * | 1915-04-24 | 1918-11-05 | Rubber Regenerating Co | Treatment of materials. |
DE879913C (de) * | 1944-02-22 | 1953-06-18 | Bayer Ag | Knetvorrichtung mit mehrgaengigen Schnecken |
FR1119651A (fr) * | 1949-07-15 | 1956-06-22 | Dispositif homogénéiseur pour machine à extruder ou à injecter les matières thermoplastiques |
-
0
- NL NL268469D patent/NL268469A/xx unknown
- NL NL136122D patent/NL136122C/xx active
- BE BE607376D patent/BE607376A/xx unknown
-
1960
- 1960-08-22 FR FR836444A patent/FR1272982A/fr not_active Expired
-
1961
- 1961-08-18 GB GB29954/61A patent/GB924635A/en not_active Expired
- 1961-08-18 CH CH968161A patent/CH373168A/fr unknown
- 1961-08-21 US US132620A patent/US3169752A/en not_active Expired - Lifetime
- 1961-08-22 DE DEP27749A patent/DE1245584B/de active Pending
- 1961-08-22 ES ES270416A patent/ES270416A1/es not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1935050A (en) * | 1930-11-29 | 1933-11-14 | Farrel Birmingham Co Inc | Machine for plasticating materials |
US2813302A (en) * | 1954-10-20 | 1957-11-19 | Gen Tire & Rubber Co | Method of and apparatus for homogenizing plastic or plasticizable materials |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3377297A (en) * | 1963-07-15 | 1968-04-09 | Goodyear Tire & Rubber | Method for producing polyurethane foams |
US3496604A (en) * | 1966-10-31 | 1970-02-24 | Vickers Zimmer Ag | Worm melter and extruder |
US3570654A (en) * | 1968-03-21 | 1971-03-16 | Gen Eng Radcliffe | Conveying screw for extrusion machines and the like |
US3652064A (en) * | 1968-03-22 | 1972-03-28 | Uniroyal Englebert Ag | Apparatus for conveying plastic material |
US3687423A (en) * | 1968-12-21 | 1972-08-29 | Werner & Pfleiderer | Continuously operating screw machine for the treatment of plastic masses |
US4178104A (en) * | 1972-07-21 | 1979-12-11 | Uniroyal, Ag | Method and apparatus for mixing viscous materials |
US4199263A (en) * | 1972-07-21 | 1980-04-22 | Uniroyal Ag | Method and apparatus for mixing viscous materials |
DE2744583A1 (de) * | 1977-10-04 | 1979-04-05 | Heinz Dipl Ing Weber | Doppelschneckenextruder |
US4629327A (en) * | 1985-01-29 | 1986-12-16 | Hermann Berstorff Maschinenbau Gmbh | Pin-barrel extruder having adjustable pins |
US4629326A (en) * | 1985-02-23 | 1986-12-16 | Hermann Berstorff Maschinenbau Gmbh | Pin-barrel extruder having adjustable pins |
FR2580984A1 (fr) * | 1985-04-30 | 1986-10-31 | Gumix Sa | Extrudeuse-turbomelangeuse dont le cylindre est muni de galettes directrices |
DE3613612A1 (de) * | 1985-04-30 | 1986-11-06 | Gumix S.A., Barcelona | Turbomisch-strangpresse |
FR2582251A1 (fr) * | 1985-04-30 | 1986-11-28 | Gumix Sa | Machine extrudeuse-turbomelangeuse |
US4658762A (en) * | 1986-02-10 | 1987-04-21 | Gas Research Institute | Advanced heater |
US4664620A (en) * | 1986-02-10 | 1987-05-12 | Gas Research Institute | Heater with zone-controlled radiant burners |
US4960328A (en) * | 1987-08-21 | 1990-10-02 | Schumacher Heinz O | Apparatus for the extrusion, expansion and/or thermal treatment of substances and substance mixtures |
EP0303728A1 (fr) * | 1987-08-21 | 1989-02-22 | Schumacher, Walter Dr. Ing. | Dispositif pour extruder, expanser et/ou traiter thermiquement des matières ou des mélanges de matières |
EP0308141A2 (fr) * | 1987-09-15 | 1989-03-22 | Farrel Corporation | Appareil rotatif d'usinage et procédé de mélange extensif et dispersif |
EP0308141A3 (en) * | 1987-09-15 | 1989-12-13 | Farrel Corporation | Rotary processor apparatus and method for extensive and dispersive mixing |
US5304054A (en) * | 1991-04-19 | 1994-04-19 | Frenkel C-D Aktiengesellschaft | Plasticizing sections of cold feed rubber extruders |
EP0517118A1 (fr) * | 1991-06-03 | 1992-12-09 | FRIEDRICH THEYSOHN GmbH | Dispositif pour la plastification de matière plastique |
US5362146A (en) * | 1991-06-03 | 1994-11-08 | Friedrich Theysohn Gmbh | Plastifier with disk and pin throttle for plastic materials |
US5255973A (en) * | 1991-06-11 | 1993-10-26 | Friedrich Theysohn Gmbh | Plastifier with throttle means |
US5480227A (en) * | 1992-12-28 | 1996-01-02 | Krupp Maschinentechnik Gmbh | Screw extruder with shear-controlling diagonally extending pins |
US5836689A (en) * | 1996-05-10 | 1998-11-17 | Voith Sulzer Stoffaufbereitung Gmbh | Device for kneading high-consistency fiber pulp |
US6767123B2 (en) * | 2001-08-15 | 2004-07-27 | Morinaga & Co., Ltd. | Kneading device |
US20030185092A1 (en) * | 2001-08-15 | 2003-10-02 | Morinaga & Co., Ltd. | Kneading device and ropesizer |
US6793386B2 (en) | 2001-08-15 | 2004-09-21 | Morinaga & Co., Ltd. | Kneading device |
US20170106579A1 (en) * | 2015-10-19 | 2017-04-20 | Sumitomo Rubber Industries, Ltd. | Extruder |
US11104053B2 (en) * | 2015-10-19 | 2021-08-31 | Sumitomo Rubber Industries, Ltd. | Extruder |
US11504680B2 (en) * | 2017-10-17 | 2022-11-22 | Buss Ag | Double-bladed worm shaft for a mixing and kneading machine, wherein each of the blade elements has an elliptic, oval, or bioconvex outer peripheral surface in the top view |
US20230077542A1 (en) * | 2017-10-17 | 2023-03-16 | Buss Ag | Double-bladed worm shaft for a mixing and kneading machine, wherein each of the blade elements has an elliptic, oval, or biconvex outer peripheral surface in the top view |
US20230249143A1 (en) * | 2017-10-17 | 2023-08-10 | Buss Ag | Asymmetrical three-blade screw-type shaft for a mixing and kneading machine |
US11779891B2 (en) * | 2017-10-17 | 2023-10-10 | Buss Ag | Asymmetrical three-blade screw-type shaft for a mixing and kneading machine |
US20210353105A1 (en) * | 2020-05-15 | 2021-11-18 | Rich Products Corporation | Injection-moldable aerator mixing rod and method of manufacturing thereof |
CN113878844A (zh) * | 2021-09-28 | 2022-01-04 | 北京工商大学 | 一种性能优化的异向双螺杆挤出机 |
Also Published As
Publication number | Publication date |
---|---|
DE1245584B (de) | 1967-07-27 |
CH373168A (fr) | 1963-11-15 |
GB924635A (en) | 1963-04-24 |
FR1272982A (fr) | 1961-10-06 |
ES270416A1 (es) | 1961-12-16 |
BE607376A (fr) | 1900-01-01 |
NL268469A (fr) | 1900-01-01 |
NL136122C (fr) | 1900-01-01 |
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