DE3503972C1 - Device for producing fibre-reinforced thermoplastics profiles - Google Patents

Device for producing fibre-reinforced thermoplastics profiles

Info

Publication number
DE3503972C1
DE3503972C1 DE3503972A DE3503972A DE3503972C1 DE 3503972 C1 DE3503972 C1 DE 3503972C1 DE 3503972 A DE3503972 A DE 3503972A DE 3503972 A DE3503972 A DE 3503972A DE 3503972 C1 DE3503972 C1 DE 3503972C1
Authority
DE
Germany
Prior art keywords
profiles
die gap
plastic
reinforced thermoplastics
fiber
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.)
Expired
Application number
DE3503972A
Other languages
German (de)
Inventor
Helmut 2420 Eutin Krueger-Beuster
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE3503972A priority Critical patent/DE3503972C1/en
Application granted granted Critical
Publication of DE3503972C1 publication Critical patent/DE3503972C1/en
Expired 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
    • B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
    • B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
    • B29B15/10—Coating or impregnating independently of the moulding or shaping step
    • B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
    • B29B15/122—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex
    • 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
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • 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
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • 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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0809—Fabrics

Landscapes

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

Abstract

Process for producing fibre-reinforced thermoplastics profiles with the introduction of the fibre material and of the plastic into a die gap, and devolatilisation of the fibre material before its introduction into the die gap, and also a device for producing fibre-reinforced thermoplastics profiles which has a die gap, an extruder opening into said die gap for introducing the plastic into the die gap and means of introducing the fibre material into the die gap, the means for introducing the fibre material into the die gap containing a vacuum zone.

Description

Patentansprüche: 1. Vorrichtung zum Herstellen von faserverstärkten thermoplastischen Kunststoffprofilen, mit einem Düsenraum, einem in diesen mündenden Extruder zum Einbringen des geschmolzenen Kunststoffes in den Düsenraum und einer mit einer Vakuumzone versehenen Faserzufuhreinrichtung, d a d u r c h gekennzeichnet, daß eine zwischen der Vaku umzone (18, 19) und dem Düsenraum (23) angeordnete, mit einer zum Rückführen des vom Düsenraum (23) gegen die Fasertransportrichtung auf die Vakuumkammer (18, 19) strömenden Kunststoffs dienende Pumpe (15) verbundene Absaugkammer (25) vorgesehen ist. Claims: 1. Device for producing fiber-reinforced thermoplastic plastic profiles, with a nozzle space, one opening into this Extruder for introducing the molten plastic into the nozzle space and one fiber feed device provided with a vacuum zone, indicated by that one between the vacuum zone (18, 19) and the nozzle chamber (23) arranged with one to return the from the nozzle chamber (23) against the fiber transport direction the vacuum chamber (18, 19) flowing plastic serving pump (15) connected Suction chamber (25) is provided.

2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Vakuumzone aus wenigstens zwei voneinander mittels eines Walzenpaares getrennten, hintereinander geschalteten Kammern (18, 19) mit ansteigendem Vakuum besteht. 2. Apparatus according to claim 1, characterized in that the vacuum zone of at least two separated from one another by means of a pair of rollers, one behind the other switched chambers (18, 19) with increasing vacuum.

Die Erfindung betrifft eine Vorrichtung zum Herstellen von faserverstärkten thermoplastischen Kunststoffprofilen nach dem Oberbegriff des Hauptanspruchs. The invention relates to a device for producing fiber-reinforced thermoplastic plastic profiles according to the preamble of the main claim.

Aus der US-PS 32 35 437, der US-PS 37 37 261, der DE-GM 7934580 und der DE-OS 24 03 610 sind bereits Vorrichtungen zum Herstellen von faserverstärkten Kunststoffprofilen bekannt, bei der die Fasern vor dem Erreichen des Extruders zu deren Entgasung eine Vakuumzone durchlaufen. From US-PS 32 35 437, US-PS 37 37 261, DE-GM 7934580 and DE-OS 24 03 610 are already devices for the production of fiber-reinforced Plastic profiles known in which the fibers close before reaching the extruder their degassing pass through a vacuum zone.

Zwischen der Vakuumzone und der dieser benachbarten Düsenkammer, in die der Kunststoff mit hohem Druck eingepreßt wird, besteht naturgemäß eine große Druckdifferenz. Diese führt - insbesondere bei Verwendung von Fasermatten - dazu, das Kunststoffmaterial gegen die Transportrichtung der Verstärkungsfasern aus dem Düsenraum in die Vakuumzone eindringt, da eine vollständige Abdichtung technisch bewerkstelligt werden kann. Dieses Rückströmen von Kunststoffmaterial führt alsbald zu einem Verstopfen der Vakuumleitung. Between the vacuum zone and the nozzle chamber adjacent to it, In which the plastic is pressed with high pressure, there is naturally a large one Pressure difference. This leads - especially when using fiber mats - to the plastic material against the direction of transport of the reinforcing fibers from the The nozzle space penetrates into the vacuum zone, as a complete seal is technically possible can be done. This backflow of plastic material soon leads clogging of the vacuum line.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Herstellen von faserverstärkten thermoplastischen Kunststoffprofilen zu schaffen, bei dem eine Entgasung des Fasermaterials in einer Vakuumzone auch dann möglich ist, wenn eine ausreichende Abdichtung zwischen Düsenraum und Vakuumzone wegen der Art des verwendeten Fasermaterials nicht möglich ist. The invention is based on the object of a device for manufacturing of fiber-reinforced thermoplastic plastic profiles, in which one Degassing of the fiber material in a vacuum zone is also possible if a adequate sealing between nozzle space and vacuum zone due to the type of used Fiber material is not possible.

Erfindungsgemäß wird diese Aufgabe durch die im kennzeichnenden Teil des Hauptanspruchs angegebenen Merkmale gelöst. Der Anspruch 2 gibt eine vorteilhafte Ausgestaltung an. According to the invention, this object is achieved by the characterizing part of the main claim specified features solved. Claim 2 gives an advantageous one Design.

Die Erfindung wird in einem Ausführungsbeispiel anhand der Zeichnung näher erläutert. Dabei zeigt die einzige Figur die erfindungsgemäße Vorrichtung. The invention is illustrated in an exemplary embodiment with reference to the drawing explained in more detail. The only figure shows the device according to the invention.

Das Kunststoffmaterial wird aus einem Extruder 13 in bekannter Weise in den Düsenraum 23 gepreßt und gelangt von diesem in Richtung des Pfeiles in eine Kalibrier-, Kühl- und/oder Abzugseinrichtung 24. The plastic material is extracted from an extruder 13 in a known manner pressed into the nozzle chamber 23 and passes from this in the direction of the arrow into a Calibration, cooling and / or extraction device 24.

Das Fasermaterial 21, daß auf eine Rolle 22 aufgewikkelt ist, gelangt über eine elektrische Beheizung 19, die für eine Trocknung des Fasermaterials sorgt, in die Vakuumzone. Diese Vakuumzone besteht aus mehreren hintereinander geschalteten Kammern 18, 19, die je- weils durch Walzenpaare 16 voneinander getrennt sind. The fiber material 21, which is wound onto a roll 22, arrives via an electrical heater 19, which ensures drying of the fiber material, into the vacuum zone. This vacuum zone consists of several one behind the other Chambers 18, 19, each Weil are separated from one another by pairs of rollers 16.

Jede der Vakuumkammern 18, 19 ist mit einer Vakuumpumpe versehen, die für einen Unterdruck in der jeweiligen Kammer sorgt. Das in den Düsenraum 23 gelangende Fasermaterial ist daher bei Einschluß in das aus dem Extruder 13 kommende Kunststoffmaterial weitgehend entgast, eine feste Verbindung zwischen Fasermaterial und Kunststoffmaterial ist gewährleistet, wobei ein Knetwalzenpaar 17 unmittelbar vor dem Düsenraum 23 für ein gutes Eindringen des Kunststoffs in das Fasermaterial sorgt.Each of the vacuum chambers 18, 19 is provided with a vacuum pump, which ensures a negative pressure in the respective chamber. That in the nozzle space 23 arriving fiber material is therefore included in that coming from the extruder 13 Plastic material largely degassed, a solid bond between fiber material and plastic material is guaranteed, with a pair of kneading rollers 17 directly in front of the nozzle space 23 for good penetration of the plastic into the fiber material cares.

Wegen des hohen Druckgefälles zwischen Düsenraum 23 und dem Einzugsbereich des Fasermaterials wird ein Strömen von Kunststoffmaterial aus dem Raum 23 in Richtung auf den Einzugsbereich für das Fasermaterial nicht vollständig zu vermeiden sein. Um eine Ansammlung von Kunststoffmaterial in diesem Bereich zu vermeiden, ist eine Pumpe 15 vorgesehen, die rückströmendes Kunststoffmaterial aus diesem Bereich absaugt und dem Extruder 13 wieder zuführt. Because of the high pressure gradient between the nozzle chamber 23 and the intake area of the fiber material is a flow of plastic material from the space 23 in the direction on the catchment area for the fiber material cannot be completely avoided. To avoid a build-up of plastic material in this area is a Pump 15 is provided, which sucks back flowing plastic material from this area and feeds it back to the extruder 13.

Es versteht sich, daß das Fasermaterial nach der Entgasung mittels geeigneter Walzen kalandriert werden kann. It goes without saying that the fiber material after the degassing means suitable rolls can be calendered.

Claims (1)

Weiter kann vorgesehen sein, daß die Drehgeschwindigkeit der Knetwalzen die der Einzugswalzen übersteigt, wodurch dem Rückströmen des Polymers entgegen gewirkt wird. It can further be provided that the rotational speed of the kneading rollers that of the feed rollers, thereby counteracting the backflow of the polymer is cast.
DE3503972A 1985-02-06 1985-02-06 Device for producing fibre-reinforced thermoplastics profiles Expired DE3503972C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3503972A DE3503972C1 (en) 1985-02-06 1985-02-06 Device for producing fibre-reinforced thermoplastics profiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3503972A DE3503972C1 (en) 1985-02-06 1985-02-06 Device for producing fibre-reinforced thermoplastics profiles

Publications (1)

Publication Number Publication Date
DE3503972C1 true DE3503972C1 (en) 1986-08-14

Family

ID=6261788

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3503972A Expired DE3503972C1 (en) 1985-02-06 1985-02-06 Device for producing fibre-reinforced thermoplastics profiles

Country Status (1)

Country Link
DE (1) DE3503972C1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3840373A1 (en) * 1988-11-30 1990-06-07 Lentia Gmbh Thermoplastic, fibre-reinforced composite material comprising polyphenylene ethers and polyamides
DE4428088A1 (en) * 1994-08-09 1996-02-15 Caprano & Brunnhofer For the absorption of defined loads of certain extruded profile bars made of thermoplastic material
DE19531184A1 (en) * 1995-08-24 1997-02-27 Metzeler Automotive Profiles Elastomeric composite profile useful esp. for vehicle window seal
WO2019245363A1 (en) * 2018-06-19 2019-12-26 Cead B.V. 3d printing device and 3d printing method with continuous extrusion-based fibre additive

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235437A (en) * 1961-09-04 1966-02-15 Chausson Usines Sa Device for coating and impregnating flexible sheets
US3737261A (en) * 1971-02-16 1973-06-05 Goldsworthy Eng Inc Resin impregnating system
DE2403610A1 (en) * 1973-01-27 1974-08-08 Ube Nitto Kasei Co PROCESS FOR MANUFACTURING A CONTINUOUS FIBER REINFORCED MATERIAL
DE7934580U1 (en) * 1979-12-08 1982-03-18 Messerschmitt-Bölkow-Blohm GmbH, 8000 München DEVICE FOR IMPREGNATING FIBER STRINGS AND TAPES

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235437A (en) * 1961-09-04 1966-02-15 Chausson Usines Sa Device for coating and impregnating flexible sheets
US3737261A (en) * 1971-02-16 1973-06-05 Goldsworthy Eng Inc Resin impregnating system
DE2403610A1 (en) * 1973-01-27 1974-08-08 Ube Nitto Kasei Co PROCESS FOR MANUFACTURING A CONTINUOUS FIBER REINFORCED MATERIAL
DE7934580U1 (en) * 1979-12-08 1982-03-18 Messerschmitt-Bölkow-Blohm GmbH, 8000 München DEVICE FOR IMPREGNATING FIBER STRINGS AND TAPES

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3840373A1 (en) * 1988-11-30 1990-06-07 Lentia Gmbh Thermoplastic, fibre-reinforced composite material comprising polyphenylene ethers and polyamides
DE4428088A1 (en) * 1994-08-09 1996-02-15 Caprano & Brunnhofer For the absorption of defined loads of certain extruded profile bars made of thermoplastic material
DE4428088C3 (en) * 1994-08-09 2003-12-04 Caprano & Brunnhofer Extruded profile bar made of thermoplastic material
DE19531184A1 (en) * 1995-08-24 1997-02-27 Metzeler Automotive Profiles Elastomeric composite profile useful esp. for vehicle window seal
WO2019245363A1 (en) * 2018-06-19 2019-12-26 Cead B.V. 3d printing device and 3d printing method with continuous extrusion-based fibre additive

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Legal Events

Date Code Title Description
8100 Publication of patent without earlier publication of application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee