DE1130995B - Device for processing and subsequent further processing or further treatment of thermoplastic plastics - Google Patents

Device for processing and subsequent further processing or further treatment of thermoplastic plastics

Info

Publication number
DE1130995B
DE1130995B DEW24593A DEW0024593A DE1130995B DE 1130995 B DE1130995 B DE 1130995B DE W24593 A DEW24593 A DE W24593A DE W0024593 A DEW0024593 A DE W0024593A DE 1130995 B DE1130995 B DE 1130995B
Authority
DE
Germany
Prior art keywords
processing
outer jacket
extension
vacuum
cone
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.)
Pending
Application number
DEW24593A
Other languages
German (de)
Inventor
Martin Doriat
Josef Eckart
Dr Joseph Heckmaier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wacker Chemie AG
Original Assignee
Wacker Chemie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DEW23407A priority Critical patent/DE1111807B/en
Application filed by Wacker Chemie AG filed Critical Wacker Chemie AG
Priority to DEW24593A priority patent/DE1130995B/en
Priority to GB17939/59A priority patent/GB863521A/en
Priority to CH7364059A priority patent/CH376265A/en
Priority to FR795943A priority patent/FR1225595A/en
Priority to BE579091A priority patent/BE579091R/en
Publication of DE1130995B publication Critical patent/DE1130995B/en
Pending legal-status Critical Current

Links

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
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • B29C48/268—Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
    • 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
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • 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
    • B29C48/505—Screws
    • B29C48/63—Screws having sections without mixing elements or threads, i.e. having cylinder shaped sections
    • 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
    • B29C48/505—Screws
    • B29C48/67—Screws having incorporated mixing devices not provided for in groups B29C48/52 - B29C48/66
    • 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
    • B29C48/76—Venting, drying means; Degassing means
    • 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
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
    • B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
    • B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/834—Cooling
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

In dem Patent 1111 807 wird eine Vorrichtung zur Verarbeitung und anschließenden Weiterverarbeitung oder Weiterbehandlung von thermoplastischen Kunststoffen, insbesondere Polyvinylchlorid, beschrieben, wobei eine Plastifizier- und/oder Geliereinrichtung verwendet wird mit gleichartigen, gleichachsigen, ineinandergesetzten und mehr oder weniger kegeligen Walzenflächen, deren eine relativ zur anderen umläuft und die einen Außenmantel und einen Konus bilden und eine Verlängerung des Außenmantels und des Konus an der Materialaustrittseite vorgesehen und die Verlängerung des Außenmantels oben ausgespart ist.In the '1111,807 patent a device for processing and subsequent further processing or further treatment of thermoplastics Plastics, in particular polyvinyl chloride, described, with a plasticizing and / or gelling device is used with similar, equiaxed, nested and more or less conical roller surfaces, one of which rotates relative to the other and which has an outer shell and Form a cone and an extension of the outer jacket and the cone on the material outlet side provided and the extension of the outer jacket is cut out at the top.

Beim Verarbeiten von plastischen Massen enthält das auf hohe Temperaturen gebrachte Gut sehr oft flüchtige Weichmacherdämpfe, eingeschlossene Luft, durch Reaktion entstandene Gase oder Feuchtigkeit, die sich beim Fertigprodukt vor allem z. B. bei Hochspannungskabeln schädlich auswirken können.When processing plastic masses, the material brought to high temperatures very often contains volatile plasticizer vapors, trapped air, reaction gases or moisture, which in the finished product especially z. B. can have a harmful effect on high-voltage cables.

Zur Vermeidung der vorgenannten Mängel zeichnet sich die Erfindung dadurch aus, daß die Aussparung eine in an sich bekannte Weise gasdicht angebrachte Vakuumleitung aufweist.To avoid the aforementioned shortcomings, the invention is characterized in that the recess has a vacuum line attached in a manner known per se in a gas-tight manner.

Hierdurch wird erreicht, daß das Vakuum gleichzeitig während des Gelier- und Einzugsvorganges auch in der Schnecke auf den Kunststoff einwirkt. This ensures that the vacuum is maintained simultaneously during the gelling and drawing-in process also acts on the plastic in the screw.

Es ist zwar eine Vorrichtung bekannt, welche die Verwendung von Vakuum bei der Behandlung plastischer Massen beschreibt. Dabei wirkt das Vakuum aber nur an der Übergangsstelle vom Ende der Vorschnecke bis zum Anfang der zweiten Schnecke, da der gesamte Raum über den Schnecken mit Material ausgefüllt und somit eine Abdichtung gegen die Wirkung des Vakuums über einen größeren Raum gegeben ist. Deshalb kann das Vakuum nur auf die Oberfläche des aus der ersten Schnecke kommenden und in die zweite Schnecke eintretenden Materials aus der Zuführungsleitung wirksam sein.Although there is a device known which the use of vacuum in the treatment describes plastic masses. The vacuum only acts at the transition point from the end the pre-screw to the beginning of the second screw, since the entire space is above the screws filled with material and thus a seal against the effect of the vacuum over a larger one Space is given. Therefore the vacuum can only be applied to the surface of the first screw coming and entering the second screw material from the feed line be effective.

Dagegen wirkt, wie bereits ausgeführt, das Vakuum bei der erfindungsgemäßen Vorrichtung zusätzlich noch weit in den Gelierraum der vorgeschalteten Geliervorrichtung. Die in diesem Raum rollenden Stränge des Geliergutes werden auf diese Weise noch unter Vakuum intensiv gewalkt. Während bei der bekannten Vorrichtung die Masse in der Vakuumzone im entspannten Zustand lediglich weiterbefördert wird, besteht der grundlegende Unterschied der Wirkung der erfindungsgemäßen Vorrichtung darin, daß die Vakuumeinwirkung auf das plastische Material auch während eines Teils des Geliervorganges unter kräftiger Walkung erfolgt, wo-Vorrichtung zur Verarbeitung
und anschließenden Weiterverarbeitung
oder Weiterbehandlung von thermoplastischen KunststoffenOn the other hand, as already stated, the vacuum in the device according to the invention also acts far into the gelation space of the upstream gelation device. In this way, the strands of the gelling material rolling in this space are intensively drummed under vacuum. While in the known device the mass in the vacuum zone in the relaxed state is only conveyed further, the fundamental difference in the effect of the device according to the invention is that the vacuum action on the plastic material takes place during part of the gelling process with vigorous flexing, where device for processing
and subsequent processing
or further treatment of thermoplastics

Zusatz zum Patent 1111 807Addendum to patent 1111 807

Anmelder:Applicant:

Wacker-Chemie G. m. b. H.,
München 22, Prinzregentenstr. 20Wacker-Chemie G. mb H.,
Munich 22, Prinzregentenstr. 20th

Martin Doriat, Josef EckartMartin Doriat, Josef Eckart

und Dr. Joseph Heckmaier, Burghausen (Obb.),and Dr. Joseph Heckmaier, Burghausen (Obb.),

sind als Erfinder genannt wordenhave been named as inventors

bei die Oberfläche des Materials durch den Abrollvorgang ständig erneuert wird.where the surface of the material is constantly renewed by the rolling process.

Die Zeichnung zeigt ein Beispiel für die Ausführung der Vorrichtung.The drawing shows an example of the implementation of the device.

Der thermoplastische Kunststoff wird im Gelierraum zwischen dem sich drehenden Rotor 7 und dem Außenmantel 8 plastifiziert, wobei es sich gegen Ende des größeren Durchmessers des Rotors 7 in einzelne Stränge aufspaltet. Die Stränge gelangen über den Verlängerungsteil 5 in den Einzugsraum der Schnecke 3, nachdem sie vom Messer 14 abgetrennt wurden. Durch die gasdichte Verbindung des Zylinders 2 der Schnecke 3 mit der Verlängerung 12 des Außenmantels 8 des Plastifizierteils wird über die Vakuumleitung 13 der Verlängerungsteil 5 und der Einzugsteil der Schnecke 3 unter Vakuum gesetzt. Das Vakuum wird rückwärts in dem Gelierraum wirksam bis zu dem Punkt, an dem die Aufteilung des Geliergutes in Stränge beginnt. Der unter Vakuum stehende Raum wird einerseits durch die Austragsmasse in der Schnecke 3, andererseits durch die noch nicht in Stränge aufgeteilte Masse im Gelierraum und die Wellenabdichtung 9 am Lager der Hauptachse nach außen abgedichtet.The thermoplastic plastic is in the gelation space between the rotating rotor 7 and the Outer jacket 8 plasticized, whereby it is towards the end of the larger diameter of the rotor 7 in individual Splits strands. The strands pass through the extension part 5 into the intake space of the screw 3 after they have been separated from the knife 14. Due to the gas-tight connection of the cylinder 2 of the screw 3 with the extension 12 of the outer jacket 8 of the plasticizing part becomes the extension part 5 and the draw-in part via the vacuum line 13 the screw 3 placed under vacuum. The vacuum is effective up to back in the gelling space the point at which the gelling material begins to be divided into strands. The room under vacuum is on the one hand by the discharge mass in the screw 3, on the other hand by the not yet in Strands of divided mass in the gelation space and the shaft seal 9 on the bearing of the main axis sealed on the outside.

Claims (3)

PATENTANSPRÜCHE:
1. Vorrichtung zur Verarbeitung und anschließenden Weiterverarbeitung oder Weiterbehandlung von thermoplastischen Kunststoffen, insbesondere Polyvinylchlorid, wobei eine Plasti-PATENT CLAIMS:
1. Device for processing and subsequent further processing or further treatment of thermoplastics, in particular polyvinyl chloride, with a plastic 209 608/331209 608/331 fizier- und/oder Geliereinrichtung verwendet wird mit gleichartigen, gleichachsigen, ineinandergesetzten und mehr oder weniger kegeligen Walzenflächen, deren eine relativ zur anderen umläuft und die einen Außenmantel und einen Konus bilden und eine Verlängerung des Außenmantels und des Konus an der Materialaustrittseite vorgesehen und die Verlängerung des Außenmantels oben ausgespart ist, nach Patent 1111807, dadurch gekennzeichnet, daß die Aussparung eine in an sich bekannter Weise gasdicht angebrachte Vakuumleitung (13) aufweist.fizier- and / or gelling device is used with similar, equiaxed, nested and more or less conical roller surfaces, one of which rotates relative to the other and which form an outer jacket and a cone and an extension of the outer jacket and the cone is provided on the material outlet side and the extension of the outer jacket is recessed at the top, according to patent 1111807, characterized in that the recess has a vacuum line (13) attached in a manner known per se in a gas-tight manner. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Verlängerung des Außenmantels (12) mit dem Zylinder (2) für die Auspreßschnecke gasdicht verbunden ist.2. Apparatus according to claim 1, characterized in that the extension of the outer jacket (12) is connected gas-tight to the cylinder (2) for the extrusion screw. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine Dichtung (9) am Lager der Hauptachse der Geliereinrichtung angebracht ist.3. Apparatus according to claim 1, characterized in that a seal (9) on the bearing the main axis of the gelling device is attached. In Betracht gezogene Druckschriften:
USA.-Patentschrift Nr. 1156 096;
belgische Patentschrift Nr. 506118.Considered publications:
U.S. Patent No. 1156,096;
Belgian patent specification No. 506118. Hierzu 1 Blatt Zeichnungen 1 sheet of drawings © 209 608/331 5.62© 209 608/331 5.62
DEW24593A 1958-05-28 1958-12-05 Device for processing and subsequent further processing or further treatment of thermoplastic plastics Pending DE1130995B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DEW23407A DE1111807B (en) 1958-05-28 1958-05-28 Device for processing and subsequent further processing or further treatment of thermoplastic plastics
DEW24593A DE1130995B (en) 1958-05-28 1958-12-05 Device for processing and subsequent further processing or further treatment of thermoplastic plastics
GB17939/59A GB863521A (en) 1958-05-28 1959-05-26 Method of and apparatus for mechanically working plastic masses
CH7364059A CH376265A (en) 1958-05-28 1959-05-27 Device for processing thermoplastics
FR795943A FR1225595A (en) 1958-05-28 1959-05-28 Granulating and forming method and device for plastics
BE579091A BE579091R (en) 1958-05-28 1959-05-28 Process for the mechanical production of changes in the states of plasticizable masses and homogenization device.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEW23407A DE1111807B (en) 1958-05-28 1958-05-28 Device for processing and subsequent further processing or further treatment of thermoplastic plastics
DEW24593A DE1130995B (en) 1958-05-28 1958-12-05 Device for processing and subsequent further processing or further treatment of thermoplastic plastics

Publications (1)

Publication Number Publication Date
DE1130995B true DE1130995B (en) 1962-06-07

Family

ID=26002256

Family Applications (2)

Application Number Title Priority Date Filing Date
DEW23407A Pending DE1111807B (en) 1958-05-28 1958-05-28 Device for processing and subsequent further processing or further treatment of thermoplastic plastics
DEW24593A Pending DE1130995B (en) 1958-05-28 1958-12-05 Device for processing and subsequent further processing or further treatment of thermoplastic plastics

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEW23407A Pending DE1111807B (en) 1958-05-28 1958-05-28 Device for processing and subsequent further processing or further treatment of thermoplastic plastics

Country Status (5)

Country Link
BE (1) BE579091R (en)
CH (1) CH376265A (en)
DE (2) DE1111807B (en)
FR (1) FR1225595A (en)
GB (1) GB863521A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0119029A2 (en) * 1983-03-14 1984-09-19 Imperial Chemical Industries Plc Vented screw pump for thermoplastic polymers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10151432A1 (en) * 2001-10-18 2003-04-30 Berstorff Gmbh Extruder with heating elements

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE506118A (en) * 1950-11-01 1900-01-01
US1156096A (en) * 1913-03-26 1915-10-12 Rubber Regenerating Co Apparatus for treating plastic material.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE914551C (en) * 1951-11-25 1954-07-05 Wacker Chemie Gmbh Method and device for plasticizing and / or gelling thermoplastics

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1156096A (en) * 1913-03-26 1915-10-12 Rubber Regenerating Co Apparatus for treating plastic material.
BE506118A (en) * 1950-11-01 1900-01-01

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0119029A2 (en) * 1983-03-14 1984-09-19 Imperial Chemical Industries Plc Vented screw pump for thermoplastic polymers
EP0119029A3 (en) * 1983-03-14 1986-06-04 Imperial Chemical Industries Plc Vented screw pump for thermoplastic polymers

Also Published As

Publication number Publication date
DE1111807B (en) 1961-07-27
BE579091R (en) 1959-09-16
FR1225595A (en) 1960-07-01
GB863521A (en) 1961-03-22
CH376265A (en) 1964-03-31

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