WO2009090089A1 - Thermorégulation de la plaque d'ajutage d'un granulateur immergé - Google Patents

Thermorégulation de la plaque d'ajutage d'un granulateur immergé Download PDF

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Publication number
WO2009090089A1
WO2009090089A1 PCT/EP2009/000262 EP2009000262W WO2009090089A1 WO 2009090089 A1 WO2009090089 A1 WO 2009090089A1 EP 2009000262 W EP2009000262 W EP 2009000262W WO 2009090089 A1 WO2009090089 A1 WO 2009090089A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle plate
cavity
tempering
heating device
tempering fluid
Prior art date
Application number
PCT/EP2009/000262
Other languages
German (de)
English (en)
Inventor
Hubertus Schulte
Volker Reichert
Andreas Schulz
Original Assignee
Hubertus Schulte
Volker Reichert
Andreas Schulz
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
Application filed by Hubertus Schulte, Volker Reichert, Andreas Schulz filed Critical Hubertus Schulte
Publication of WO2009090089A1 publication Critical patent/WO2009090089A1/fr

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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
    • B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
    • 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
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/582—Component parts, details or accessories; Auxiliary operations for discharging, e.g. doors
    • 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
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/82—Heating or cooling
    • B29B7/826—Apparatus therefor
    • 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
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/865—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
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone
    • 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
    • B29C2948/92819—Location or phase of control
    • B29C2948/92971—Fluids, e.g. for temperature control or of environment
    • 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
    • B29C48/04—Particle-shaped
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising

Definitions

  • the invention relates to a nozzle plate and a system comprising the nozzle plate and a method for tempering plastic, which is extruded through the nozzle plate into a water chamber of an underwater granulator.
  • the system or the nozzle plate comprise a cavity, which is set up for receiving a tempering fluid for tempering the nozzle plate.
  • the plastic In the operation of an underwater granulator, the plastic is melted in an extruder and extruded through the nozzles of a nozzle plate attached to the extruder head into a chamber flushed with water.
  • To produce the granules extruded through the nozzle strands are cut off directly on the nozzle plate by a rotating knife. This happens under water in the chamber, which causes the granules to be immediately frozen.
  • the nozzle plate adjoins the water chamber and is thus also cooled by the water. This undesirable effect causes the plastic passing through the nozzles to cool too early and "freeze" in the nozzles.
  • the nozzle plate or the passing through the melt channels and nozzles of the nozzle plate plastic must be tempered, in particular heated. This is generally done by a tempering, which is passed through the nozzle plate, or by an electrical heating of the nozzle plate.
  • a heatable nozzle plate is described.
  • the molten plastic is conveyed through melt channels in a plate mounted on the extruder head to the nozzle plate.
  • This plate thus forms a back wall for the nozzle plate. It is interspersed with lines for a temperature control medium.
  • lines for a temperature control medium By an inlet and outlet in the nozzle plate, these lines of the rear wall are connected to corresponding lines in the nozzle plate in order to use these lines, a liquid or Dampffför- Miges tempering medium to be able to pass through the nozzle plate.
  • Shut-off valves are mounted outside the rear wall in order to be able to interrupt the flow of the tempering medium when, for example, the nozzle plate is detached from the rear wall for cleaning.
  • the lines for the tempering lead through both the nozzle plate and through the rear wall, with which the nozzle plate is mounted on the extruder head. Therefore, care must be taken when mounting that the connections for the pipes meet each other sealingly.
  • the flow of the temperature control medium must be interrupted and, if appropriate, any tempering medium still present in the nozzle plate must be drained off.
  • a system for tempering plastic to be extruded into a water chamber of an underwater granulator comprises the nozzle plate with the melt channels penetrating it for the passage of plastic and a cavity arranged therein, which is set up to receive a tempering fluid for tempering the nozzle plate.
  • the system furthermore comprises a heating device which is set up and, at least during operation of the system, arranged adjacent to the cavity in order to heat and at least partially vaporize tempering fluid contained in the cavity by means of the heating device. In operation, the cavity is thus closed, so that evaporation of the tempering fluid within the cavity by means of the heater is possible.
  • the advantage of this arrangement is the simple heating of the plastic through the melt channels and nozzles.
  • the vapor of the tempering fluid easily reaches every corner of the cavity, even if it has a complicated geometry. Vapor and liquid flows transport the heat quickly to the colder areas of the cavity. There, the vapor condenses and flows back into a reservoir in the cavity. At the colder parts of the cavity, hot steam immediately returns and heats it up. Condensation of the steam and backflow into the reservoir create a closed circuit within the cavity and no external treatment of the tempering fluid is necessary.
  • the cavity of the nozzle plate for receiving the tempering medium is formed as a closed within the nozzle plate cavity.
  • the nozzle plate may have a closure with which a filling and discharge opening of the cavity is closable, e.g. in the event that the tempering fluid must be replaced or the delivery of the nozzle plate without Temperierfluid done.
  • the system may include heaters of various arrangements. In this case, it is necessary for the heating and the vaporization of the tempering fluid that the heating device is arranged adjacent to the cavity at least during operation. If the heating device is a part of the system which is separate from the nozzle plate, ie the nozzle plate itself contains no heating device and therefore does not require any connections, it can advantageously be integrated in the rear wall on which the nozzle plate is fixed during operation of the system. be grated. It is important to ensure that the heater is arranged in operation adjacent to the cavity in the nozzle plate.
  • the heating device is designed as an integral part of the nozzle plate. As a result, the heating device can reach very close to the cavity, and thus a favorable heat transfer between the heating device and the tempering fluid is made possible.
  • an electrical resistance heater is advantageous.
  • this comprises at least one heating cartridge.
  • the heating cartridges are arranged closer together in the region of the reservoir than in the remaining region of the cavity.
  • the invention is not limited to the use of an electrical resistance heater.
  • an inductive heating device in this case, a first part of the heating device can be arranged adjacent to or inside the cavity and has no direct electrical contact with a power supply. Instead, the current is induced in the first part by means of a second part which is arranged outside the nozzle plate.
  • This second part can for example be mounted on the extruder head or be part of the rear wall and, with the nozzle plate mounted, arranged sufficiently close to the part of the heating device in the nozzle plate in order to achieve the inductive effect.
  • the heater is a heat exchanger into consideration.
  • a line with a heated tempering fluid in the vicinity of the cavity past the nozzle plate and thereby heats the tempering fluid contained in the cavity can be dispensed with complicated lines in the nozzle plate.
  • the heating of the tempering takes place solely by the heated plastic in the extruder head.
  • the heating of the tempering takes place solely by the heated plastic in the extruder head.
  • the vaporized tempering fluid in turn then heats the plastic in the remote melt channels and nozzles in the nozzle plate or keeps the area of the nozzle plate comprising the melt channels and nozzles at a temperature.
  • an electric heater which is an integral part of the nozzle plate, then an electrical connection between this heater and an external power supply is needed. It is advantageous if the electrical connection is made automatically when mounting the nozzle plate on the extruder head. This can be realized by means of a suitable plug or push connection to the nozzle plate and the rear wall to which the nozzle plate is attached. In this case, a power supply line leads from the back of the nozzle plate to the heater in the nozzle plate. In this way, the power supply of the heater is simple and reliable, since the connection is automatically made when mounting the nozzle plate.
  • the heating device In order to achieve effective heating of the tempering fluid in the cavity, it is further advantageous to arrange the heating device such that a part of the cavity extends around at least part of the heating device. It can be particularly advantageous if the heating device protrudes into at least part of the cavity. As a result, the tempering fluid is in direct contact with the heating device, and heating can thus be effected even more effectively.
  • the cavity of the nozzle plate is filled with a tempering fluid in such a way that at room temperature there is a liquid phase of the tempering fluid (reservoir) in the cavity.
  • the partial filling at room temperature with liquid tempering fluid ensures that a saturated vapor phase of the tempering fluid can form on heating. Since the cavity in the nozzle plate can have a complicated geometry, reaches the vaporous phase poorly accessible areas of the cavity within the nozzle plate easier and faster than a liquid phase and thus heats the entire cavity evenly.
  • the cavity which is partially filled with tempering fluid, is under reduced pressure at room temperature.
  • the cavity is formed as a closed cavity in the nozzle plate. Such a nozzle plate can then be filled and sealed with a tempering fluid before it is delivered under vacuum. During operation, an excess pressure in the cavity then arises due to the high operating temperatures due to partial evaporation of the tempering fluid.
  • the tempering fluid When the tempering fluid is heated, a thermodynamic equilibrium is established.
  • the heater heats the tempering fluid and at least partially vaporizes it. It condenses on the colder parts of the inner surfaces of the cavity and collects as a liquid phase.
  • a part of the cavity is set up as a reservoir.
  • the liquid phase of the tempering between 150 0 C and 330 0 C fills the cavity over 0%.
  • the liquid phase of the tempering between 150 ° C and 330 0 C fills the cavity between 40% and 10%. This ensures that during operation there is always a liquid and a vaporous phase of the tempering fluid in the cavity and the vaporous phase is thus saturated. This results in a particularly rapid and uniform tempering of the passing through the melt channels and nozzles plastic.
  • a mixture of diphenyl and diphenyl ether proves to be a particularly suitable tempering fluid.
  • This tempering fluid is also sold under the trademark DIPHYL®.
  • a special configuration of the cavity is advantageous, in which the cavity has a region lying radially outside relative to the melt channels and a relative tively to the melt channels radially inner region comprises. Since the melt channels and the nozzles are arranged annularly in the nozzle plate, the melt channels and nozzles are heated in the nozzle plate so from two sides.
  • melt channels are surrounded directly by the tempering fluid.
  • FIG. 1a shows a nozzle plate fastened to a rear wall with heating device integrated in the nozzle plate (section I-1 in FIG. 3), FIG.
  • FIG. 1b shows an enlargement of the threaded plug of FIG. 1a
  • FIG. 2 shows the nozzle plate from FIG. 1 in a different cross section (section M-II in FIG. 3),
  • FIG. 3 shows a section through the nozzle plate from FIGS. 1 and 2 orthogonal to the nozzle direction
  • FIG. 4 shows a nozzle plate attached to a rear wall with a heating device integrated in the rear wall
  • FIG. 5 is a fixed to a rear wall nozzle plate without additional heating
  • FIG. 6 shows a nozzle plate with extended cavity fastened to a rear wall.
  • a nozzle plate 2 of an underwater pelletizer is shown, which is attached to a rear wall 1 (fasteners not shown).
  • the rear wall 1 is in turn mounted on an extruder head.
  • the rear wall 1 is interspersed with melt channels 3, which conduct the molten plastic from the extruder via melt channels 4 in the nozzle plate 2 to the nozzles 5.
  • the plastic is then forced through the nozzles 5 into the water chamber of an underwater pelletizer, not shown, where the extruded strands are pelletized by means of a rotating knife.
  • the nozzle plate 2 is tempered, in particular heated, since the water in the water chamber, the nozzle plate 2 cools and the plastic in the melt channels 4 and 5 nozzles could otherwise solidify.
  • the nozzle plate 2 is provided with a cavity 6, 7, 8. In the exemplary embodiment according to FIG. 1, this extends relative to the melt channels 4, 5 both radially outside 6, 7 and radially inside 8.
  • a tempering fluid contained in the cavity 6, 7, 8 is heated by means of heating cartridges 9, 10, so that it at least partially evaporates.
  • the lower region 7 of the cavity 6, 7, 8 serves as a reservoir for collecting the condensed tempering fluid.
  • the filling of the cavity 6, 7, 8 is carried out in vacuo at room temperature (20 0 C).
  • the tempering fluid is completely degassed, ie this contains no dissolved air. Since the filling takes place in a vacuum-below the vapor pressure of the tempering fluid-a portion of the tempering fluid will already evaporate after the cavity 6, 7, 8 has been closed. With increasing temperature - during heating - further volume fractions of the tempering fluid will evaporate and the pressure in the cavity 6, 7, 8 also increases. This in turn establishes a balance between liquid and vapor phase in the cavity 6, 7, 8.
  • the cavity 6, 7, 8 is designed so that the steam resulting from the tempering fluid flows in a vacuum against gravity and at first wets all the walls of the cavity 6, 7, 8 evenly, since the heat flowing away is relatively small - the free surfaces of the Nozzle plate 2 are only in contact with the ambient air. Only when the cutting surface of the nozzle plate 2 water comes, more heat flows from the nozzle plate 2, the heat flow now causes a very large temperature difference between the cutting surface and the surface of the cavity 6, 7, 8, which is very close to the cutting surface. The heat is transferred from the hot steam to the localized cold surface of the cavity 6, 7, 8, thus creating a temperature difference within the cavity 6, 7, 8 in the steam. The temperature difference in the steam causes a difference in density and thus creates a flow in the steam - towards the cold surfaces. In addition, the vapor on the cold surface cools down to the point where it condenses and forms liquid on the cold surface. The liquid flows by gravity in the cavity 6, 7, 8 down, where the reservoir 7 is located.
  • the part of the tempering fluid is evaporated, which is required to maintain the equilibrium between the vapor and liquid phase in the cavity 6, 7, 8 at the corresponding temperature.
  • the heating cartridges 9, 10 are integrated into the nozzle plate 2, they are supplied via electrical connections 11, 12 on the back with power (shown schematically). This is a sliding connection, so that the electrical connection is made automatically when mounting the nozzle plate 2 on the rear wall 1 by contacts to the heating cartridges 9, 10 come to mating contacts of the rear wall 1 to the plant.
  • the cavity also has a threaded plug 15 which closes a filling and discharge opening of the cavities 6, 7, 8. This is, as shown enlarged in Figure 1b, correspondingly sealed and provided with a pressure relief valve.
  • the cleaning of the nozzle plate 2 is carried out by heating to 450 0 C. This decomposes the melt of the plastic and can be mechanically removed. The tempering fluid remains unaffected by this temperature and can remain in the cavity 6, 7, 8.
  • Figure 2 shows the attached to the rear wall 1 nozzle plate 2 of Figure 1 in another sectional plane. It is the connections 13, 14 between the radially inner part 8 of the cavity and the radially outer part 6 of FIG Cavity. The formed as a reservoir lower portion 7 of the outer part 6 of the cavity can not be seen in this section.
  • FIG. 3 a section through the nozzle plate 2 of the same configuration as in FIGS. 1 and 2 is orthogonal to the nozzle direction.
  • the arrangement of the cavity 6, 7, 8 is shown more clearly.
  • the lower region 7 of the cavity 6, 7, 8 forms the reservoir in which the tempering fluid condensed in the outer part 6 and inner part 8 collects.
  • more heating cartridges 10 are mounted on the lower reservoir portion 7 of the nozzle plate 2 as the remaining outer part 6 of the nozzle plate. 2
  • FIG. 4 shows another embodiment of the invention.
  • the heating device in the form of heating cartridges 9, 10 is not integrated in the nozzle plate 2, but in the rear wall 1. So that the heating cartridges 9, 10 nevertheless extend into the vicinity of the cavity 6, 7, the heating cartridges 9, 10 are integrated in projections of the rear wall 1.
  • the nozzle plate 2 has in this case corresponding recesses into which engage the projections of the rear wall 1 during mounting.
  • FIG 5 shows an embodiment of the invention, in which no additional heating device is required, but the tempering is evaporated solely by the hot plastic flowing through the rear wall 1 and the nozzle plate 2.
  • the cavity 6, 7 extends over as long a distance as possible along the melt channels 3 in the rear wall.
  • the rear wall 2 is thicker than usual for this purpose. Since the melt channels 3 are predominantly contained in the rear wall 1 and the cavity 6, 7 completely in the nozzle plate 1, the nozzle plate 2 and the rear wall 1 are formed so that they engage with each other. Since the cavity 6, 7 and the melt channels 3 are arranged close to each other over a relatively long distance, a heat transfer from the plastic to the temperature rierfluid possible.
  • the tempering fluid heated in this way heats the melt channels 4, 5, which are likewise arranged adjacent to the cavity 6, 7, 8.
  • FIG. 6 shows a further exemplary embodiment of the invention.
  • the cavity 6, I 1 8 comprises a larger area of the nozzle plate 2.
  • the melt channels 4, 5 pass through the cavity 6, 7, 8 and are thus completely surrounded by the tempering fluid.
  • the heating cartridges 9, 10 protrude into the cavity 6, 7, 8.
  • a very effective heating is possible.

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  • 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)

Abstract

L'invention concerne un système thermorégulateur de matière plastique à extruder dans une chambre à eau d'un granulateur immergé, comprenant une plaque d'ajutage (2) présentant des canaux de matière fondue (4, 5) traversant la plaque d'ajutage (2) pour le passage de matière plastique, et une cavité (6, 7, 8) destinée à recevoir un fluide thermorégulateur pour la thermorégulation de la plaque d'ajutage (2). Le système comprend un dispositif de chauffage (9, 10) qui est agencé et disposé, au moins lorsque le système est en fonctionnement, au voisinage de la cavité (6, 7, 8), en vue de chauffer et d'évaporer, au moins partiellement, au moyen du dispositif de chauffage (9, 10) le fluide thermorégulateur contenu dans la cavité (6, 7, 8). L'invention concerne en outre une plaque d'ajutage (2) appartenant au système, et un procédé de thermorégulation de matière plastique à extruder dans une chambre à eau d'un granulateur immergé, procédé consistant à utiliser le système précité. On peut en outre, éventuellement supprimer le dispositif de chauffage (9, 10) lorsque la chaleur de la matière plastique à extruder est utilisée et est suffisante pour l'évaporation du fluide thermorégulateur.
PCT/EP2009/000262 2008-01-17 2009-01-16 Thermorégulation de la plaque d'ajutage d'un granulateur immergé WO2009090089A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008004858.5 2008-01-17
DE102008004858A DE102008004858A1 (de) 2008-01-17 2008-01-17 Temperieren der Düsenplatte eines Unterwassergranulators

Publications (1)

Publication Number Publication Date
WO2009090089A1 true WO2009090089A1 (fr) 2009-07-23

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WO (1) WO2009090089A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3159064A1 (fr) * 2015-10-23 2017-04-26 Kugler-Womako GmbH Dispositif d'application d'un adhésif liquide ou visqueux, une fois chauffé

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012012070A1 (de) * 2012-06-15 2013-12-19 Automatik Plastics Machinery Gmbh Düsenplatte für eine Granuliervorrichtung und Granuliervorrichtung mit einer Düsenplatte
EP3199314B1 (fr) * 2016-01-27 2019-07-31 Coperion GmbH Dispositif de production de tiges, et dispositif de granulation associé
DE102021205606A1 (de) 2021-06-02 2022-12-08 Lean Plastics Technologies GmbH Extrusionswerkzeug und Verfahren zur Unterwassergranulation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63126705A (ja) * 1986-11-18 1988-05-30 Plast Kogaku Kenkyusho:Kk 造粒装置
US5629028A (en) * 1995-11-07 1997-05-13 The Conair Group, Inc. Underwater pelletizer having sealed heat transfer tubes embedded in extrusion die
US20050035483A1 (en) * 2003-07-30 2005-02-17 Jackson Richard Alan Polymer underwater pelletizer apparatus and process incorporating same
US20060204604A1 (en) * 2003-03-12 2006-09-14 Hideo Yamanaka Granulation die, granulation apparatus, and process for producing expandable thermoplastic resin granule

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006004677U1 (de) 2005-12-30 2006-06-14 Rieter Automatik Gmbh Düsenplatte eines Unterwassergranulators

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63126705A (ja) * 1986-11-18 1988-05-30 Plast Kogaku Kenkyusho:Kk 造粒装置
US5629028A (en) * 1995-11-07 1997-05-13 The Conair Group, Inc. Underwater pelletizer having sealed heat transfer tubes embedded in extrusion die
US20060204604A1 (en) * 2003-03-12 2006-09-14 Hideo Yamanaka Granulation die, granulation apparatus, and process for producing expandable thermoplastic resin granule
US20050035483A1 (en) * 2003-07-30 2005-02-17 Jackson Richard Alan Polymer underwater pelletizer apparatus and process incorporating same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3159064A1 (fr) * 2015-10-23 2017-04-26 Kugler-Womako GmbH Dispositif d'application d'un adhésif liquide ou visqueux, une fois chauffé

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