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 PDF

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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
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Prior art keywords
knife
extruding
thermoplastics
casing
treatment
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US132620A
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Leonce Marie Henri K Laubarede
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PLASTUS S A SA
Plastus-Sa SA
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PLASTUS S A SA
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    • 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.

Description

1965 L M. H. K. DE LAUBAREDE 3, ,7
HOMOGENIZI NG DEVICE FOR EXTRUDING OR INJECTING MACHINES IN THE TREATMENT OF THERMOPLASTICS Filed Aug. 21, 1961 3 Sheets-Sheet l K. DE LAUBAREDE 3,169,752 CE FOR EXTRUDING 0R INJECTING TREATMENT OF THERMOPLASTICS Feb. 16, 1965 L. M. H.
HOMOGENIZING DEVI MACHINES IN THE Filed Aug. 21. 1961 3 Sheets- Sheet 2 Feb. 16, 1965 L. M. H. K. DE LAUBAREDE 3,
HOMOGENIZING DEVICE FOR EXTRUDING 0R INJECTING MACHINES IN THE TREATMENT OF THERMOPLASTICS Filed Aug. 21. 1961 3 Sheets-$heet 3 United States Patent O 6 Claims. for. 259-7 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.
In order to insure such an adjustment, 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.
In order to insure fluid tightness despite the large pressures which are developed within the 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.
In the preferred form of this invention, 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.
Owing to the presence of said ring, 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.
In the preferred form of this invention, there is positioned, between each circular rib of said rotating member, a knife adapted to be turned at will.
In order that this invention may be completely understood, there is shown in the annexed drawings in an illustrative and by no means limitative way a preferred form of this invention.
' In the drawings:
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, and,
FIG. 5 shows the same knife in the course of being adjusted.
3,169,752 Patented Feb. 16, 1965 Referring to FIG. 1, it can be seen that 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.
It is to be noted that 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. On said sleeve 6 are formed 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.
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.
As can be seen in FIG. 3, each knife is locked in position by a retaining lug 14 fixed to sleeve 6 by bolts 15.
Before making the adjustment, it is necessary to disengage the knife base 11 from the corresponding seat in sleeve 6 and to do this it is necessary to act upon nut 12a by elevating the latter along the threaded part of knife 11) as it is seen in FIG. 4, so that afterwards, it is possible to lower slightly said knife by manipulating a nut 16 which engages the lower face of the retaining lug 14.
Once base 11 is disengaged from the seat thereof, the operator must adjust the orientation of the knife, by elevating the ring 12, such elevation being made possible by the previous elevation of nuts 12a and by disengaging the external teeth of said ring from the corresponding notches in sleeve 6, as it is seen in FIG. 5.
Once the disengagement of ring 12 from sleeve 6 is effected by sliding said ring upon the lower plain square section of knife 10, such knife may be rotated on its axis by acting upon the control bar 13 so as to move the knife by one or more teeth, and then once the adjustment is completed, the latter is locked by lowering the ring 12 along the lower square section part and by causing the teeth thereof, in its new adjusted position, to engage the corresponding notches of recess 9, locking of ring 12 in the adjusted position being insured by nut 12a. At the completion of the operation, it is sufficient to manipulate nut 12a in order to bring again the recited base 11 against the seat thereof.
In order to locate the adjustment, 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.
It is clear that the number of helical grooves may be modifiedrand thus that of the knives, within the scope of the present invention as defined in the appended claims.
What I claim is:
1. In 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.
2. 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.
3. A device as claimed in claim 2 comprising releasable means for locking said vanes in any one of a plurality of predetermined fixed positions.
4. A device as claimed in claim 3 in which said releasspaced from said circular ribs toward the inlet end of said casing. v I
6. In a device for. homogenizing plastic material, said device 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.
References Cited by the Examiner UNITED STATES PATENTS 1,935,050 11/33 Gordon.
2,813,302 11/57 Beck.
WALTER A. SCHEEL, Primary Examiner. LEO QUACKENBUSH, Examiner.

Claims (1)

1. IN 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 HEL-
US132620A 1960-08-22 1961-08-21 Homogenizing device for extruding or injecting machines in the treatment of thermoplastics Expired - Lifetime US3169752A (en)

Applications Claiming Priority (1)

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FR836444A FR1272982A (en) 1960-08-22 1960-08-22 Improved homogenizer device for machine for extruding or injecting thermoplastic materials

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BE (1) BE607376A (en)
CH (1) CH373168A (en)
DE (1) DE1245584B (en)
ES (1) ES270416A1 (en)
FR (1) FR1272982A (en)
GB (1) GB924635A (en)
NL (2) NL268469A (en)

Cited By (25)

* Cited by examiner, † Cited by third party
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 (en) * 1977-10-04 1979-04-05 Heinz Dipl Ing Weber Twin-screw extruder with intermeshing mixing cams at metering section - to achieve complete compounding and avoid inhomogeneities of plastics melt
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 (en) * 1985-04-30 1986-10-31 Gumix Sa Turbo-mixer extruder, the barrel of which is fitted with directing discs
DE3613612A1 (en) * 1985-04-30 1986-11-06 Gumix S.A., Barcelona TURBOMIC EXTRUSION
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 (en) * 1987-08-21 1989-02-22 Schumacher, Walter Dr. Ing. Apparatus for extruding, expanding and/or thermally processing materials or material blends
EP0308141A2 (en) * 1987-09-15 1989-03-22 Farrel Corporation Rotary processor apparatus and method for extensive and dispersive mixing
EP0517118A1 (en) * 1991-06-03 1992-12-09 FRIEDRICH THEYSOHN GmbH Apparatus for plastifying plastic
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
CN113878844A (en) * 2021-09-28 2022-01-04 北京工商大学 Performance optimization's incongruous double screw 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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2235784C3 (en) * 1972-07-21 1986-01-09 Uniroyal Englebert Reifen GmbH, 5100 Aachen Single-screw extruder for mixing and homogenizing high-viscosity rubber compounds and high-viscosity thermoplastics
DE2650248C2 (en) * 1976-11-02 1985-06-05 Heinz Dipl.-Ing. 8640 Kronach Weber Screw extruder for processing plasticizable plastics
DE2758266C2 (en) * 1977-12-27 1982-11-25 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Device for regulating the throughput of a single or twin screw extruder connected to a polymerisation system
DE3003615C2 (en) * 1980-02-01 1984-03-29 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Screw extruder with pin cylinder
DE3438649A1 (en) 1984-10-22 1986-04-24 Windmöller & Hölscher, 4540 Lengerich SINGLE SCREW EXTRUSION FOR THERMOPLASTIC AND ELASTOMERS
DE3805849A1 (en) * 1988-02-25 1989-09-07 Krupp Gmbh Pin extruder
DE3816422C2 (en) * 1988-05-13 1996-08-14 Krupp Ag Pen extruder
DE3841728C1 (en) * 1988-12-10 1990-03-01 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover, De

Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1283947A (en) * 1915-04-24 1918-11-05 Rubber Regenerating Co Treatment of materials.
DE879913C (en) * 1944-02-22 1953-06-18 Bayer Ag Kneading device with multi-pitch screws
FR1119651A (en) * 1949-07-15 1956-06-22 Homogenizer device for machine for extruding or injecting thermoplastic materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
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 (35)

* Cited by examiner, † Cited by third party
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 (en) * 1977-10-04 1979-04-05 Heinz Dipl Ing Weber Twin-screw extruder with intermeshing mixing cams at metering section - to achieve complete compounding and avoid inhomogeneities of plastics melt
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
FR2582251A1 (en) * 1985-04-30 1986-11-28 Gumix Sa Turbomixer-extruder machine
DE3613612A1 (en) * 1985-04-30 1986-11-06 Gumix S.A., Barcelona TURBOMIC EXTRUSION
FR2580984A1 (en) * 1985-04-30 1986-10-31 Gumix Sa Turbo-mixer extruder, the barrel of which is fitted with directing discs
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 (en) * 1987-08-21 1989-02-22 Schumacher, Walter Dr. Ing. Apparatus for extruding, expanding and/or thermally processing materials or material blends
EP0308141A2 (en) * 1987-09-15 1989-03-22 Farrel Corporation Rotary processor apparatus and method for extensive and dispersive mixing
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 (en) * 1991-06-03 1992-12-09 FRIEDRICH THEYSOHN GmbH Apparatus for plastifying plastic
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
CN113878844A (en) * 2021-09-28 2022-01-04 北京工商大学 Performance optimization's incongruous double screw extruder

Also Published As

Publication number Publication date
CH373168A (en) 1963-11-15
NL136122C (en) 1900-01-01
GB924635A (en) 1963-04-24
NL268469A (en) 1900-01-01
BE607376A (en) 1900-01-01
FR1272982A (en) 1961-10-06
DE1245584B (en) 1967-07-27
ES270416A1 (en) 1961-12-16

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