FI61145B - EXTRUDER FOER BEHANDLING AV SAERSKILT TEMPERATURKAENSLIGA PLASTER - Google Patents

EXTRUDER FOER BEHANDLING AV SAERSKILT TEMPERATURKAENSLIGA PLASTER Download PDF

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Publication number
FI61145B
FI61145B FI790082A FI790082A FI61145B FI 61145 B FI61145 B FI 61145B FI 790082 A FI790082 A FI 790082A FI 790082 A FI790082 A FI 790082A FI 61145 B FI61145 B FI 61145B
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FI
Finland
Prior art keywords
layer
extruder
cylinder
thermal conductivity
press cylinder
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Application number
FI790082A
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Finnish (fi)
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FI790082A (en
FI61145C (en
Inventor
Reiner Schneider
Original Assignee
Siemens Ag
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Publication of FI790082A publication Critical patent/FI790082A/en
Publication of FI61145B publication Critical patent/FI61145B/en
Application granted granted Critical
Publication of FI61145C publication Critical patent/FI61145C/en

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Classifications

    • 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
    • B29C48/84—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 by heating or cooling the feeding screws
    • B29C48/845—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
    • 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
    • B29C48/51—Screws with internal flow passages, e.g. for molten material
    • B29C48/515—Screws with internal flow passages, e.g. for molten material for auxiliary fluids, e.g. foaming agents
    • 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
    • B29C48/25—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
    • B29C48/84—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 by heating or cooling the feeding screws
    • 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
    • B29C48/84—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 by heating or cooling the feeding screws
    • B29C48/85—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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92209—Temperature
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/9239—Screw or gear
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/924—Barrel or housing
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

-Τ·1 ΓΑΐ m1,KUULUTUSJUUKAISU ' „ . _ W (11) utlAggningsskrift 61 1 4 5 C Patentti uyönnelty 10 G6 1932 ^ Patent meddelat V-/ (51) Kv.lk?/lnt.CI.3 B 29 P 3/08 SUOMI—FINLAND (*) Ptt«nttlh*k«mut — PKancamMnilng 790082 (22) H»k*ml«p4Jvt — Antöknlnpdag 10.01.79 ' 1' (23) Alkupiivi — Glklghmdig 10.01.79 (41) Tullut lulktoakal — Blivlt offantilg ^2 07 79-Τ · 1 ΓΑΐ m1, ADVERTISING JUICE '„. _ W (11) utlAggningsskrift 61 1 4 5 C Patent granted 10 G6 1932 ^ Patent meddelat V- / (51) Kv.lk?/lnt.CI.3 B 29 P 3/08 FINLAND — FINLAND (*) Ptt «nttlh * k «mut - PKancamMnilng 790082 (22) H» k * ml «p4Jvt - Antöknlnpdag 10.01.79 '1' (23) Starting line - Glklghmdig 10.01.79 (41) Tullut lulktoakal - Blivlt offantilg ^ 2 07 79

Patentti· ja rekisterihallitus .... ........ , , .Patent and Registration Office .... ........ , , .

... (+4) Nlhttvtkslpwon ) kuuLJulkatsun pvm. —... (+4) Date of publication) Date of publication. -

Patent· oeh registerstyreisen Amöktn uttmgd och utl.ikrift«n puMktrad 26.02.82 (32)(33)(31) Pyydetty etuoikeus —Begird prioritet n, Q1.78Patent · oeh registerstyreisen Amöktn uttmgd och utl.ikrift «n puMktrad 26.02.82 (32) (33) (31) Privilege requested —Begird priority n, Q1.78

Saksan Liittotasavalta-Förbundsrepubliken Tyskland(DE) P 2801U99-5 (71) Siemens Aktiengesellschaft, Berlin/Miinchen, DE; Wittelsbacherplatz 2, D-8OOO Munchen 2, Saksan Liittotasavalta-Förbundsrepubliken !fyskland(DE) (72) Reiner Schneider, Ebersdorf, Saksan Liittotasavalta-Förbundsrepubliken lyskland(DE) (7*0 Berggren Oy Ab (5*0 Suulakepuristin, jolla käsitellään lämpötilaan hyvin herkästi reagoivia muoveja - Extruder för behandling av särskilt temperaturkänsliga plasterFederal Republic of Germany-Förbundsrepubliken Tyskland (DE) P 2801U99-5 (71) Siemens Aktiengesellschaft, Berlin / Miinchen, DE; Wittelsbacherplatz 2, D-8OOO Munchen 2, Federal Republic of Germany-Förbundsrepubliken! Fyskland (DE) (72) Reiner Schneider, Ebersdorf, Federal Republic of Germany-Förbundsrepubliken lyskland (DE) (7 * 0 Berggren Oy Ab (5 * 0 highly sensitive plastics - Extruder for handling of plastics with plaster temperature plaster

Esillä oleva keksintö kohdistuu suulakepuristimeen, jolla käsitellään lämpötilaan hyvin herkästi reagoivia muoveja, kuten esim. verkkoutuvaa polyeteeniä tai solupolyeteeniä kemiallisella paisutusaineella ja jossa on jäähdytys- ja kuu-mennuslaitteella varustettu puristinsylinteri, jossa on paineenkestävä seinäkerros sekä sisäpuolinen kulutuskerros.The present invention relates to an extruder for treating plastics which are very sensitive to temperature, such as crosslinkable polyethylene or cellular polyethylene with a chemical blowing agent, and which has a press cylinder with a cooling and heating device, a pressure-resistant wall layer and an inner wear layer.

Eräs tämäntapainen suulakepuristin on rakennettu niin, että puristinsylinterin materiaali ja mahdollisesti sen sisään järjestetty syöttöputki omaa pienemmän lämmönjohtavuuden kuin puristinsylinteriä ulkoa ympäröivän vaipan materiaali, joka vaippa on varustettu kuumennus- ja jäähdytyslaitteilla (DE-OS 23 59 901).An extruder of this type is constructed in such a way that the material of the press cylinder and possibly the supply pipe arranged inside it have a lower thermal conductivity than the material of the jacket surrounding the outside of the press cylinder, which jacket is provided with heating and cooling devices (DE-OS 23 59 901).

Muoveja käytetään entistä enemmän kaapelien ja johtojen eristykseen. Tällöin myös suulakepuristimien käyttö käy jatkuvasti yhä tärkeämmäksi. Markkinoilla olevissa suulakepu- 61145 ristimissä tunnetaan rakenteita, joissa puristinsylinterin lämpötila on säädettävissä, jolloin lämpötilan muutoksiin hyvin herkästi reagoivien muovien laatua voidaan osaksi optimoida. Tätä tarkoitusta varten puristinsylinterin alueella sovitetaan kuumennus- ja jäähdytyslaitteita (DE-hakemusjulkaisu 24 17 067).Plastics are increasingly being used to insulate cables and wires. In this case, the use of extruders is also becoming increasingly important. 61145 extruders on the market are known in which the temperature of the press cylinder is adjustable, whereby the quality of plastics which are very sensitive to temperature changes can be partially optimized. For this purpose, heating and cooling devices are arranged in the region of the press cylinder (DE-A-24 17 067).

Edelleen tunnetaan suulakepuristin, jonka sylinteriin on paremman lämmönjohtavuuden aikaansaamiseksi pituussuuntaisiin porauksiin sovitettu hyvän lämmönjohtavuuden omaavaa ainetta olevia sauvoja (DE-OS 17 29 384) . Tällä pyritään estämään se, että sylinterin jossakin alueessa syntyvä lämpöenergia olisi johdettava ulos.An extruder is further known, in the cylinder of which rods of a material with good thermal conductivity are arranged in the longitudinal bores in order to provide better thermal conductivity (DE-OS 17 29 384). This is to prevent the thermal energy generated in any area of the cylinder from being dissipated.

Keksinnön tarkoituksena on parantaa hyvin lämpötilaherkillä muoviaineilla saavutettavissa olevaa laatua sen kautta, että puristettavan aineen ulkosivulla puristinsylinterin johdosta vallitseva lämpötila on säädettävissä vielä tarkemmin kuin tunnetuilla laitteilla. Tämän päämäärän saavuttamiseksi on keksinnölle tunnusomaista se, mikä on esitetty oheisessa patenttivaatimuksessa 1.The object of the invention is to improve the quality achievable with highly temperature-sensitive plastic materials by the fact that the temperature prevailing on the outside of the material to be pressed due to the press cylinder can be adjusted even more precisely than with known devices. To achieve this object, the invention is characterized by what is set out in the appended claim 1.

Näillä toimenpiteillä vältytään myös suulakepuristimien pelätyiltä "kuumilta pesäkkeiltä" eli kohdilta, joiden lämpötila on kohonnut hyvin korkealle. Lisäksi suulakepuristimessa, jossa on tällainen tasoittava kerros, ei enää ole kovinkaan ongelmallista, miten kuumennus- ja jäähdytyslaitteet on sovitettava suulakepuristimen ulkopinnalle.These measures also avoid the dreaded "hot colonies" of extruders, i.e. areas where the temperature has risen to a very high level. Furthermore, in an extruder with such a leveling layer, it is no longer very problematic how the heating and cooling devices have to be fitted to the outer surface of the extruder.

Puristinsylinterin toiminta-alueiden tällaisen jaon ansiosta voidaan keksinnön rakenteellisessa toteutuksessa myös lämpötila-anturi sijoittaa puristinsylinteriin erityisen tarkoituksenmukaisesti. Tämä saadaan aikaan siten, että esim. läm-pöparien kärkien annetaan tarttua hyvän lämmönjohtavuuden omaavaan aineeseen. Tämän ansiosta liian voimakkaita lämpötilan vaihteluja ei varmasti pääse esiintymään, koska lämpöä hyvin johtava kerros jakaa lämmön tasaisesti sen ympäröimän muovin suunnassa.Thanks to such a division of the operating areas of the press cylinder, in the structural implementation of the invention, the temperature sensor can also be placed in the press cylinder in a particularly expedient manner. This is achieved by allowing, for example, the tips of the thermocouples to adhere to a material with good thermal conductivity. As a result, too strong temperature fluctuations will certainly not occur, because the highly heat-conducting layer distributes the heat evenly in the direction of the surrounding plastic.

Claims (2)

61145 Keksintöä selitetään seuraavassa yksityiskohtaisesti piirustuksessa kaaviollisesti esitetyn suoritusesimerkin avulla. Piirustuksen ainoa kuvio esittää pitkittäisleikkausta suu-lakepurstinsylinterin läpi. Puristinsylinterin 20 osapitkittäisleikkaus näyttää sen kolmikerroksista rakennetta. Varsinaisen puristinsylinterin muodostaa teräksinen seinäkerros 21, joka on mitoitettu siten, että se voi ottaa vastaan puristimen sisätilan 24 osaksi hyvin suuret paineet. Seinäkerros 21 on verhottu sylinterillä 22, joka on kuparia eli siis hyvän lämmönjohtavuuden omaavaa ainetta ja joka on puolestaan erotettu sisätilasta 24 kulumista kestävästä aineesta valmistetulla kulutuskerroksella 23. Puristinsylinterin 20 ulkpinnalle on sovitettu vuorotellen kuumennus- ja jäähdytyslaitteita 25 ja 26. Lämpöparin 8 kärki 9 ulottuu kerrokseen 22.61145 The invention will be explained in detail below by means of an embodiment schematically shown in the drawing. The only figure in the drawing shows a longitudinal section through the mouthpiece cylinder. The partial longitudinal section of the press cylinder 20 shows its three-layer structure. The actual press cylinder is formed by a steel wall layer 21 which is dimensioned so that it can receive very high pressures as part of the interior 24 of the press. The wall layer 21 is clad with a cylinder 22 of copper, i.e. a material with good thermal conductivity, which in turn is separated from the interior 24 by a wear layer 23 made of wear-resistant material. 22. 1. Suulakepuristin, jolla käsitellään lämpötilaan hyvin herkästi reagoivia muoveja, kuten esim. verkkoutuvaa polyetee-niä tai solupolyeteeniä kemiallisella paisutusaineella ja jossa on jäähdytys- ja kuumennuslaitteella (26, 25) varustettu puristinsylinteri (20), jossa on paineenkestävä seinä-kerros (21) sekä sisäpuolinen kulutuskerros (23)»tunnettu siitä, että paineenkestävän seinäkerroksen (21) ja sisäpuolisen kulutuskerroksen (23) väliin on järjestetty homogeeninen kerros (22), jolla on muihin kerroksiin verrattuna suurempi lämmönjohtavuus.An extruder for treating very temperature-sensitive plastics, such as crosslinked polyethylene or cellular polyethylene, with a chemical blowing agent, and having a press cylinder (20) with a pressure-resistant wall layer (21) provided with a cooling and heating device (26, 25). and an inner wear layer (23) »characterized in that a homogeneous layer (22) with a higher thermal conductivity than the other layers is arranged between the pressure-resistant wall layer (21) and the inner wear layer (23). 2. Patenttivaatimuksen 1 mukainen suulakepuristin, tunnettu siitä, että suuremman lämmönjohtavuuden omaavaan kerrokseen (22) työntyy ainakin yksi lämpöpari-kärki (9).Extruder according to Claim 1, characterized in that at least one thermocouple tip (9) projects into the layer (22) having a higher thermal conductivity.
FI790082A 1978-01-11 1979-01-10 EXTRUDER FOER BEHANDLING AV SAERSKILT TEMPERATURKAENSLIGA PLASTER FI61145C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2801499A DE2801499C3 (en) 1978-01-11 1978-01-11 Extruder for the treatment of high temperature sensitive plastics
DE2801499 1978-01-11

Publications (3)

Publication Number Publication Date
FI790082A FI790082A (en) 1979-07-12
FI61145B true FI61145B (en) 1982-02-26
FI61145C FI61145C (en) 1982-06-10

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FI790082A FI61145C (en) 1978-01-11 1979-01-10 EXTRUDER FOER BEHANDLING AV SAERSKILT TEMPERATURKAENSLIGA PLASTER

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CH (1) CH633219A5 (en)
DE (1) DE2801499C3 (en)
FI (1) FI61145C (en)
GB (1) GB2012659A (en)

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GB2166079A (en) * 1984-10-10 1986-04-30 Bp Chem Int Ltd Internally heated extruder screw for thermoplastic extrusion process
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AT393980B (en) * 1988-06-20 1992-01-10 Boehler Gmbh METHOD FOR PRODUCING COMPOSITE STEEL WORKPIECES AND COMPOSITE STEEL WORKPIECES
DE3843576A1 (en) * 1988-12-23 1990-07-12 Jv Kunststoffwerk METHOD AND DEVICE FOR PRODUCING PLASTIC MOLDED PARTS
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GB2257607B (en) * 1989-12-22 1994-07-27 Elmatic Improvements relating to heat transfer units
DE4014408C1 (en) * 1990-05-04 1992-01-30 Buss Ag, Basel, Ch Heating materials during work process in closed work area - involves rotating work member, feeding gaseous heat carrier into handling zone and then removing gas
US5447190A (en) * 1993-02-04 1995-09-05 Nokia-Maillefer Sa Device and method for cooling an extrusion cylinder
EP0862981A1 (en) * 1997-03-07 1998-09-09 Ihne & Tesch GmbH Device for heating and cooling the extrusion cylinders of plastic processing machines

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DE1529918A1 (en) * 1964-06-23 1969-10-30 Frieseke & Hoepfner Gmbh Plastic screw press with measuring sensors for the work piece
DE1729384B2 (en) * 1967-02-18 1976-06-24 Weber, Heinz, Dipl.-Ing., 8640 Kronach DEVICE FOR HEAT DISCHARGE FROM POINTS OF HIGH TEMPERATURE TO POINTS OF LOW TEMPERATURE OF A PLASTIC SCREW EXTRUSION PRESS
US3588956A (en) * 1968-12-16 1971-06-29 Phillips Petroleum Co Apparatus and method for controlling temperature in a feed screw
US3689182A (en) * 1970-03-27 1972-09-05 Midland Ross Corp Extruder providing radial and axial melt removal
CA1006602A (en) * 1972-12-13 1977-03-08 Crompton And Knowles Corporation Temperature control apparatus for extruders
DD103193A1 (en) * 1973-04-23 1974-01-12

Also Published As

Publication number Publication date
FI790082A (en) 1979-07-12
DE2801499C3 (en) 1981-05-27
DE2801499B2 (en) 1980-08-28
FI61145C (en) 1982-06-10
DE2801499A1 (en) 1979-07-12
CH633219A5 (en) 1982-11-30
GB2012659A (en) 1979-08-01

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