WO2008019741A1 - Granulé de bâtonnet de fibres longues - Google Patents

Granulé de bâtonnet de fibres longues Download PDF

Info

Publication number
WO2008019741A1
WO2008019741A1 PCT/EP2007/006312 EP2007006312W WO2008019741A1 WO 2008019741 A1 WO2008019741 A1 WO 2008019741A1 EP 2007006312 W EP2007006312 W EP 2007006312W WO 2008019741 A1 WO2008019741 A1 WO 2008019741A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
fiber material
granules
fibers
long fiber
Prior art date
Application number
PCT/EP2007/006312
Other languages
German (de)
English (en)
Inventor
Richard Brüssel
Original Assignee
Blach Verwaltungs Gmbh & Co. Kg
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 Blach Verwaltungs Gmbh & Co. Kg filed Critical Blach Verwaltungs Gmbh & Co. Kg
Publication of WO2008019741A1 publication Critical patent/WO2008019741A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/12—Making granules characterised by structure or composition
    • B29B9/14—Making granules characterised by structure or composition fibre-reinforced
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • 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
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
    • B29C48/2886—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of fibrous, filamentary or filling materials, e.g. thin fibrous reinforcements or fillers
    • 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
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/297—Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat

Definitions

  • the invention is based on a long-fiber rod granulate according to the preamble of claim 1.
  • the invention is further based on a process for the production of long-fiber rod granules according to the preamble of claim 5.
  • Fiber bar granules are already known which are formed from a fiber-impregnated fiber material.
  • the fibers of an endless fiber strand are wetted by a polymeric plastic and / or coated.
  • the invention is in particular the object of providing a Langmaschinestabchengranulat, which is produced with a low cost and / or energy consumption. It is achieved according to the invention by the features of claim 1. Further embodiments will be apparent from the additional and dependent claims. Advantages of the invention
  • the invention relates to a Langfaserstabchengranulat from a plastic impregnated Fasermate ⁇ al.
  • the long fiber rod granules can be produced with a low cost and / or energy expenditure.
  • the plastic is preferably formed by a polymeric plastic.
  • the content of fibers in the long fiber bar granules that are shorter than the long fiber bar granules is preferably at least 10%.
  • the fiber material is preferably formed from a fiberglass material, a carbon fiber material, a natural fiber material and / or another fiber material that appears expedient to the person skilled in the art.
  • the long fiber bar granulate length be between 3 mm and 30 mm, whereby the long fiber bar granules can advantageously be further processed. Furthermore, a large fiber length connected thereto can be achieved by the large long fiber rod granulate length and thus an advantageous strength of a component produced from the long fiber rod granules can be achieved.
  • a mean fiber length of the fiber material amounts to between 1 mm and 20 mm, whereby a wear of fiber material in the production and in particular in the Further processing of Langfaserstabchengranulats can be at least reduced.
  • the average fiber length can be limited within the long fiber bar granules to an effective fiber length for further processing.
  • a method is proposed, which is provided for the production of long-fiber rod granules, which is formed from a fiber-impregnated fiber material, wherein short fibers of the fiber material are used for the production of Langturastabchengranulats.
  • a particularly cost-effective method for producing the long-fiber rod granules can be achieved by, in particular, fiber residues can be processed.
  • short fibers are to be understood as referring in particular to fibers which have a finite length and in particular less than 2 m (meters)
  • a length of the fibers is limited to a maximum of one double of a long fiber rod granule length, advantageously it is maximum however, it is limited to a fraction of the final long fiber bar granules length, but individual fibers of the fiber material for making the long fiber bar granules may also be - A -
  • the short fibers of the fiber material be impregnated with plastic, which structurally simple a short fiber length, in particular a shorter fiber length than a final Langfaserstabchengranulatlange can be achieved.
  • the proportion of fibers in the long fiber rod granules which are shorter than the long fiber rod granules is preferably at least 10%, advantageously at least 25%, and preferably at least 40%.
  • endless fibers of the fiber material be used for producing the long fiber rod granules, whereby an advantageous supply of the fiber material can be achieved.
  • the fibers of the fiber material are shortened during an impregnation process and / or after an impregnation process.
  • Endless fibers can also be used with particular advantage as fiber material for producing the long fiber rod granules, in which ultimately at least 10% of the fibers of the fiber material are shorter than a long fiber rod granulate length.
  • the fibers can be broken here on special mixing elements and / or cutting elements.
  • the fiber-impregnated fiber material be cut to a long fiber rod granule length, thereby providing a uniform distribution of fiber material within the long fiber rod granule.
  • cut in this context is meant a separation from a coherent object, such as a polymer material impregnated with a polymeric material, such as, in particular, breaking, knocking, cutting, etc.
  • a particularly low level of wear during the production of the long fiber bar granules can advantageously be achieved when a long fiber bar granulate mass is cut in a hot cut. It should under a "hot discount" a
  • a method can be understood in which a Langfaserstabchengranulatmasse is cut in a hot state in long fiber rod.
  • the Langfaserstabchengra ⁇ nulatmasse is heated for impregnation to a melting temperature of the polymeric resin, so that also a vorteilhaf ⁇ te energy saving can be achieved.
  • Fig. 1 is a schematic sectional view of an apparatus for a method according to the invention for the production of a Langmaschinestabchengranulats invention
  • FIG. 2 shows a long fiber rod of the long fiber rod granulate from FIG. 1.
  • FIG. 1 shows a device 22 for a method for the production of long fiber bar granules 10.
  • the apparatus 22 includes an extruder unit 24 and a cutting unit 26.
  • the extruder unit 24 includes a Schne ⁇ ckenwelle 28 which is arranged inside a screw cylinder 30th
  • the worm shaft 28 is driven by a drive shaft 32 from a drive unit not shown in detail.
  • the worm cylinder 30 is rohrformig and has an opening 34 on one of the drive shaft 32 side facing. Through this opening 34 polymer plastic 12 is introduced into the screw cylinder 30. At one of the tendons Ckenwelle 28 opposite side of the opening 34, a funnel-like receptacle 36 is arranged, which receives the polymeric plastic 12 before it is inserted into the screw cylinder 30.
  • the polymeric plastic 12 is supplied to the screw cylinder 30 in the form of a solid plastic granules. The supply of the polymer plastic granules takes place via a not shown gravimetric dosing, in which by a determination of a weight of the polymer plastic granules a required amount per period of the extruder unit 24 is supplied.
  • heating elements 40 are arranged in a transport direction 38 on an outwardly directed side of the worm cylinder 30, which heat the polymer plastic granules.
  • the polymer plastic granules are heated to a temperature which is higher than a melting temperature of the polymer plastic granules, so that the polymeric plastic granules are melted during transport inside the screw cylinder 30.
  • the screw cylinder 30 has a further opening 42 for a supply of fibers 16 of a fiber material 14.
  • the polymeric plastic is already completely melted.
  • the feeding of the fibers 16 of the fiber material 14 takes place via a side dosing 58, which encloses a worm shaft 60.
  • the worm shaft 60 transports the fibers 16 of the fiber material 14 to the opening 42 of the worm cylinder 30.
  • a fed amount of fibers 16 of the fiber material 14 is carried out gravimetrically, so that a fiber material concentration can be varied in the Langfaserstabchengranulat 10, wherein the fiber concentration in a range between see see 10% and 80%.
  • the fiber material is already shortened to a finite length of the individual fibers 16 before being fed into the screw cylinder 30. In principle, however, it is also conceivable to use fibers 16 of an endless fiber strand for producing the long fiber rod granules 10.
  • the fiber strands are fed through the opening 42 in the worm cylinder 30 by wrapping around the worm shaft 28 to the molten polymeric plastic 12 within the worm cylinder 30.
  • a twin-screw extruder not shown in more detail is used.
  • the fibers 16 of the fiber material are impregnated with the polymer plastic 12 or a long fiber bar granulate mass 44 having a homogeneous fiber concentration is produced.
  • the fibers 16 of the fiber material 14 and the polymeric plastic 12 are further transported by the worm shaft 28 in a transport direction 38 of the worm shaft 28 and mixed together by the worm shaft 28.
  • heating elements 40 are arranged along the screw cylinder 30 on the outwardly directed side of the screw cylinder 30, which keep the polymer plastic 12 together with the fiber material at a temperature which is above the melting temperature of the polymer plastic 12.
  • a unit 46 which is provided for breaking the fibers 16, in particular of endless and / or very long fibers 16 of the fiber material 14.
  • the long fiber rod granulate mass 44 is pressed through a nozzle 48.
  • a multi-hole panel 50 connects, through which the long fiber rod granulate mass 44 is pressed during operation of the apparatus 22.
  • the cutting unit 26 adjoining the multi-hole panel 50 cuts the long fiber rod granule mass 44 to a long fiber rod granule length 18.
  • the long fiber rod granules 10 are cut in a hot punching process.
  • 50 heating elements 52 are arranged in the transport direction 44 along the multi-hole aperture, which prevent cooling of the long fiber rod granules 44 to a temperature below the melting temperature of the polymer plastic 12.
  • the tough long fiber rods granular mass 44 is pressed through the multi-aperture plate 50 and cut by a cutting means 54 of the cutting unit 26 to a Langfa ⁇ serstäbchengranulat 10th
  • the cutting means 54 thereby moves in rotation about an axis 56 on the multi-aperture 50.
  • the heating elements 52 along the multi-hole diaphragm 50 or a use of the heating elements 52 can be dispensed with.
  • the long fiber stabchengranulatmasse 44 has in the range of the multi-aperture plate 50 has a temperature which is below the Schmelztem ⁇ temperature of the polymeric resin 12, so that the long turastabchengranulatmasse 44 is pressed in an already cooled and solidified state by the multi-aperture plate 50 and then by the cutting means 54 is cut to a long fiber rod granule length 18.
  • the cutting unit 26 cuts the long fiber bar granular mass 44 onto a long fiber bar granule length 18 that is between 3 mm (mm) and 30 mm.
  • the long fiber rod granules 10 (FIG. 2) have a fiber length 20 that is at least 10% shorter than the long fiber rod granules 18 due to the short fibers 16 of the fiber material used in making the long fiber rod granules 10.
  • the average fiber length 20 in the long fiber rod granules 10 due to the amounts Langfaserstabchengranu ⁇ latlange 18 between 1 mm and 20 mm.

Abstract

L'invention concerne un granulé sous forme de bâtonnet de fibres longues, formé d'un matériau fibreux (14) imprégné de plastique (12). Selon l'invention, au moins 10 % des fibres (16) du matériau fibreux (14) sont plus courtes qu'une longueur d'un granulé de bâtonnet de fibres longues (18).
PCT/EP2007/006312 2006-08-18 2007-07-17 Granulé de bâtonnet de fibres longues WO2008019741A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006038948A DE102006038948A1 (de) 2006-08-18 2006-08-18 Langfaserstäbchengranulat
DE102006038948.4 2006-08-18

Publications (1)

Publication Number Publication Date
WO2008019741A1 true WO2008019741A1 (fr) 2008-02-21

Family

ID=38577611

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/006312 WO2008019741A1 (fr) 2006-08-18 2007-07-17 Granulé de bâtonnet de fibres longues

Country Status (2)

Country Link
DE (1) DE102006038948A1 (fr)
WO (1) WO2008019741A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017126946A1 (de) 2017-11-16 2019-05-16 Kraussmaffei Technologies Gmbh Verfahren zur Herstellung von Kunststoff-Formteilen
DE102018118883B3 (de) 2018-08-03 2020-01-16 Kraussmaffei Technologies Gmbh Verfahren und Vorrichtung zur Herstellung eines faserverstärkten Plastifikats und Verwendung der Vorrichtung zur additiven Fertigung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635542A2 (fr) * 1993-07-21 1995-01-25 Toray Industries, Inc. Résine thermoplastique renforcée de fibres, procédé de sa préparation et extrudeuse
US6051307A (en) * 1999-01-30 2000-04-18 Asahi Kasei Kogyo Kabushiki Kaisha Thermoplastic molded article containing carbon fiber
US6261495B1 (en) * 1999-08-17 2001-07-17 Chip Coolers, Inc. Process of molding a polymer reinforced with particles
US20020025424A1 (en) * 1996-10-14 2002-02-28 Dsm N.V. Thermoplastic molded part, a process for the production thereof and applications thereof
DE10304097A1 (de) * 2003-01-31 2004-08-12 Vgt-Polycom Gmbh Vorrichtung und Verfahren zur Herstellung eines Granulats
DE102004061767A1 (de) * 2004-12-22 2006-07-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Thermoplastischer Verbundwerkstoff und Verfahren zu dessen Herstellung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4419579A1 (de) * 1994-06-03 1995-12-07 Basf Ag Kunststoffmaterial und Verfahren zu dessen Herstellung
DE19921712A1 (de) * 1999-05-12 2000-11-23 Ticona Gmbh Kunststoffgehäuse mit verringertem Verzug
DE10038405C1 (de) * 2000-08-07 2002-05-02 Moeller Plast Gmbh Verfahren zum Herstellen von thermoplastisch gebundenem Naturfasermaterial
DE10134995A1 (de) * 2001-07-18 2003-02-06 Rettenmaier & Soehne Gmbh & Co Füllstoff auf der Basis von Holzfasern zur Herstellung von Kunststoff-Formkörpern
DE10151369A1 (de) * 2001-10-17 2003-05-22 Sai Automotive Sal Gmbh Formteil sowie Granulat zu dessen Herstellung
EP1498245A1 (fr) * 2003-07-15 2005-01-19 Borealis Technology OY Granulés thermoplastiques de forme sphéroidale renforcés avec des fibres

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635542A2 (fr) * 1993-07-21 1995-01-25 Toray Industries, Inc. Résine thermoplastique renforcée de fibres, procédé de sa préparation et extrudeuse
US20020025424A1 (en) * 1996-10-14 2002-02-28 Dsm N.V. Thermoplastic molded part, a process for the production thereof and applications thereof
US6051307A (en) * 1999-01-30 2000-04-18 Asahi Kasei Kogyo Kabushiki Kaisha Thermoplastic molded article containing carbon fiber
US6261495B1 (en) * 1999-08-17 2001-07-17 Chip Coolers, Inc. Process of molding a polymer reinforced with particles
DE10304097A1 (de) * 2003-01-31 2004-08-12 Vgt-Polycom Gmbh Vorrichtung und Verfahren zur Herstellung eines Granulats
DE102004061767A1 (de) * 2004-12-22 2006-07-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Thermoplastischer Verbundwerkstoff und Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
DE102006038948A1 (de) 2008-02-21

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