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WO2008107169A1 - Filière d'extrusion conçue pour produire des profilés creux - Google Patents

Filière d'extrusion conçue pour produire des profilés creux Download PDF

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Publication number
WO2008107169A1
WO2008107169A1 PCT/EP2008/001734 EP2008001734W WO2008107169A1 WO 2008107169 A1 WO2008107169 A1 WO 2008107169A1 EP 2008001734 W EP2008001734 W EP 2008001734W WO 2008107169 A1 WO2008107169 A1 WO 2008107169A1
Authority
WO
WIPO (PCT)
Prior art keywords
extrusion
heating
die
heating elements
molding compound
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.)
Ceased
Application number
PCT/EP2008/001734
Other languages
German (de)
English (en)
Inventor
Walter Breyer
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.)
Breyer GmbH Maschinenfabrik
Original Assignee
Breyer GmbH Maschinenfabrik
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 Breyer GmbH Maschinenfabrik filed Critical Breyer GmbH Maschinenfabrik
Publication of WO2008107169A1 publication Critical patent/WO2008107169A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/903—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies externally
    • 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
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-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
    • B29C48/78—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
    • 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
    • B29C2948/92609—Dimensions
    • B29C2948/92647—Thickness
    • 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
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb

Definitions

  • the invention relates to an extrusion die for the production of hollow chamber profiles with a downstream calibrator, in particular Doppelbandkalibrator having nozzle lips which define an exit region for the exit of a plastic molding composition.
  • Hollow profiles made of plastic are often used in facade technology or z. B. used for rafterless rooflights in roofs and walls. For this purpose, it is also known to produce the hollow chamber profiles of an impact-resistant, weather-resistant plastic such as polycarbonate.
  • the extrusion die has a plurality of slots, which are formed according to the cross section of the hollow chamber profile. Since this is not a solid profile with a uniform cross-section, but a hollow chamber profile, which is constructed like a lattice in cross-section by means of the webs, problems can arise in the forming extrusion nozzle with regard to an addition of the thermal expansions, e.g. At nodes of the webs more mass is present, as in the area of the web walls. As a result, the dimensions of the die lips may be adversely affected during extrusion, i. it can bulges and therefore inaccuracies in the hollow profile shape due to uneven heat effects occur.
  • the present invention has the object to provide an extrusion die, which has a very homogeneous temperature profile when extruding hollow chamber profiles, so that on the one hand the production of dimensional mass as accurate as possible hollow chamber profiles and on the other hand the longest possible life of the extrusion die are guaranteed.
  • At least one of the nozzle lips is heated by one or more heating element (s).
  • the measure namely to design the heat output of the heating elements spatially differently adjustable, has the great advantage that different heat quantities can be provided especially at crossing points or thickening points of the profile webs, so that it is possible with such heating elements, predetermined areas of the cross-sectional profile of the extrusion die to influence for the hollow chamber profile to be produced with respect to their working temperatures to the effect that the respective extrusion lip practically has an approximate isothermic character.
  • the locally different heating powers are selected such that it is higher in areas with quantitatively higher throughput of plastic molding compound than in areas with quantitatively lower throughput of plastic molding compound, wherein for the higher throughput of plastic molding compound all webs and / or crossing points of the hollow chamber profiles to be produced come into question.
  • the individual heating elements are preferably used in the front region in the upper and / or lower die lips parallel to the melt flow direction.
  • individual holes are provided, in which the individual heating elements can be used interchangeably.
  • the matrices themselves are provided with corresponding heating elements in order to temper the exact areas, crossing points, diagonal slots differently during the extrusion process in selectable areas.
  • heating cartridges are arranged individually or in groups interchangeable and controllable or adjustable, which facilitates assembly.
  • Fig. 1 is a schematic side view of an extrusion die
  • Inlet region of a Doppelbandkalibrators is arranged
  • Fig. 3 shows an extrusion nozzle in perspective
  • Fig. 1 the principle of a Doppelbandkalibrators is schematically shown in side view, to which an extrusion die 2 of a not shown in detail and per se known extruder plant follows, from which fed a suitable plastic molding compound in plasticized form of the extrusion die 2 under pressure and thus from this is pressed in the form of a hollow chamber profile 3, as shown in FIG. 2.
  • the Doppelbandkalibrator 1 is similar to a double press, constructed of two on drums 4 - 7 mounted closed endless belts 8 and 9, between which in a nip 10, the respective hollow chamber profile 3 is calibrated when passing through the nip 10.
  • the extrusion nozzle 2 has an upper and a lower nozzle lip 11 and 12 in the outlet region for the exit of the plastic molding material heating elements 13 and 14 are arranged distributed parallel to a melt flow direction 15 across the width.
  • the individual heating elements 13, 14 distributed to the full width individually or in groups controlled at the front and parallel to the melt flow direction 15 in the upper and / or lower die lip 11, 12 may be used.
  • the heating elements 13, 14 can also be used, preferably parallel to the melt flow direction 15, in the dies 18 to 20 of the middle cores.
  • nozzle lips 11 and 12 can in the present embodiment, as shown in enlarged in Fig. 4, a hollow chamber profile plate 3 of several contiguous Profilestrfite ⁇ (shown only profile strands 3.1 - 3.3) of the same cross section are produced, with individual, juxtaposed separately narrower hollow chamber profile plates also possible are.
  • the upper die lip 11 has a series of grid-like dies, three of which are shown in FIG. 4 and designated 18-20. Own here the lattice-like matrices 18-20 respectively frame slots 21, two diagonal slots 22 and 23 and a central slot 24, wherein adjacent matrices, such as 3.1 and 3.2, by a relative to the slots 21 - 24 thicker web slot 25 are interconnected.
  • a plurality of heating elements 13 and 14 are provided over the width of the extrusion die 2.

Landscapes

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

Abstract

La présente invention concerne une filière d'extrusion (2) conçue pour produire des profilés creux (3) à l'aide d'un dispositif d'étalonnage, notamment un dispositif d'étalonnage à double bande (1), placé en aval et présentant des lèvres de filière (11, 12) qui définissent une région de sortie pour la sortie d'une matière plastique à mouler. Selon cette invention, au moins une des lèvres de filière (11 ou 12) doit être chauffée par un ou plusieurs éléments chauffants (13 ou 14).
PCT/EP2008/001734 2007-03-07 2008-03-05 Filière d'extrusion conçue pour produire des profilés creux Ceased WO2008107169A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007011461A DE102007011461A1 (de) 2007-03-07 2007-03-07 Extrusionsdüse zur Herstellung von Hohlkammerprofilen
DE102007011461.5 2007-03-07

Publications (1)

Publication Number Publication Date
WO2008107169A1 true WO2008107169A1 (fr) 2008-09-12

Family

ID=39642712

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/001734 Ceased WO2008107169A1 (fr) 2007-03-07 2008-03-05 Filière d'extrusion conçue pour produire des profilés creux

Country Status (2)

Country Link
DE (1) DE102007011461A1 (fr)
WO (1) WO2008107169A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1444757A (en) * 1972-08-15 1976-08-04 Du Pont Process and apparatus for preparing polymeric film
DE8714160U1 (de) * 1986-10-29 1987-12-23 Bergsmann Apparatebau GmbH & Co. KG, Micheldorf Extrusionswerkzeug zur Herstellung eines aus aufgeschäumten Thermoplast bestehenden Extrudates
EP0342567A2 (fr) * 1988-05-18 1989-11-23 Röhm Gmbh Procédé pour la fabrication de feuilles en matière plastique revêtues d'une couche résistante à l'abrasion
JPH11207804A (ja) * 1998-01-27 1999-08-03 Kanegafuchi Chem Ind Co Ltd フィルム厚み制御装置及び制御方法
US20020168437A1 (en) * 2001-04-06 2002-11-14 Harry Chan Pipe extrusion die for multi-layer pipe

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3525736C1 (en) * 1985-07-19 1987-01-22 Knauer Joachim Friedrich Hot runner nozzle for injection moulding
DE9014968U1 (de) 1990-10-30 1992-02-27 Röhm GmbH, 6100 Darmstadt Vorrichtung zur Extrusion von Hohlkammerplatten aus thermoplastischem Kunststoff
JPH0832424B2 (ja) * 1992-12-18 1996-03-29 藤夫 山田 プラスチックのランナレス射出成形のためのホットノズルの温度制御装置
US5772933A (en) * 1994-10-12 1998-06-30 Kotzab; Werner Method for tempering an injection mold having at least one heated nozzle or hot runner
CA2482254A1 (fr) * 2004-04-07 2005-10-07 Mold-Masters Limited Buse d'injection modulaire a isolant thermique
DE202006009056U1 (de) * 2006-06-07 2006-08-10 Günther Heisskanaltechnik Gmbh Beheizte Spritzgießdüse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1444757A (en) * 1972-08-15 1976-08-04 Du Pont Process and apparatus for preparing polymeric film
DE8714160U1 (de) * 1986-10-29 1987-12-23 Bergsmann Apparatebau GmbH & Co. KG, Micheldorf Extrusionswerkzeug zur Herstellung eines aus aufgeschäumten Thermoplast bestehenden Extrudates
EP0342567A2 (fr) * 1988-05-18 1989-11-23 Röhm Gmbh Procédé pour la fabrication de feuilles en matière plastique revêtues d'une couche résistante à l'abrasion
JPH11207804A (ja) * 1998-01-27 1999-08-03 Kanegafuchi Chem Ind Co Ltd フィルム厚み制御装置及び制御方法
US20020168437A1 (en) * 2001-04-06 2002-11-14 Harry Chan Pipe extrusion die for multi-layer pipe

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 197409, Derwent World Patents Index; AN 1974-15496V *
DATABASE WPI Week 199941, Derwent World Patents Index; AN 1999-487500 *
DATABASE WPI Week 200408, Derwent World Patents Index; AN 2004-079960 *

Also Published As

Publication number Publication date
DE102007011461A1 (de) 2008-09-11

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