DE3843535A1 - Use of semifinished products of fibre-reinforced plastic for the production of mouldings, in particular bumper brackets - Google Patents

Use of semifinished products of fibre-reinforced plastic for the production of mouldings, in particular bumper brackets

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Publication number
DE3843535A1
DE3843535A1 DE19883843535 DE3843535A DE3843535A1 DE 3843535 A1 DE3843535 A1 DE 3843535A1 DE 19883843535 DE19883843535 DE 19883843535 DE 3843535 A DE3843535 A DE 3843535A DE 3843535 A1 DE3843535 A1 DE 3843535A1
Authority
DE
Germany
Prior art keywords
semi
finished product
mouldings
fibers
production
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.)
Withdrawn
Application number
DE19883843535
Other languages
German (de)
Inventor
Matthias Dr Winkler
Hans Hubert Wald
Ernst-Werner Ratz
Klaus Giesen
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.)
BASF Polyurethanes GmbH
Original Assignee
Elastogran Kunststoff Technik GmbH
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 Elastogran Kunststoff Technik GmbH filed Critical Elastogran Kunststoff Technik GmbH
Priority to DE19883843535 priority Critical patent/DE3843535A1/en
Publication of DE3843535A1 publication Critical patent/DE3843535A1/en
Withdrawn legal-status Critical Current

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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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/0073—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor of non-flat surfaces, e.g. curved, profiled
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/0017—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor characterised by the choice of the material
    • B29C63/0021—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor characterised by the choice of the material with coherent impregnated reinforcing layers
    • 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
    • B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
    • B29C70/887—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced locally reinforced, e.g. by fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/03—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by material, e.g. composite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
    • 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
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/12—Thermoplastic materials
    • 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
    • B29K2105/10—Cords, strands or rovings, e.g. oriented cords, strands or rovings
    • B29K2105/101—Oriented
    • B29K2105/108—Oriented arranged in parallel planes and crossing at substantial angles
    • 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
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3044—Bumpers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/1833—Structural beams therefor, e.g. shock-absorbing made of plastic material
    • B60R2019/1853—Structural beams therefor, e.g. shock-absorbing made of plastic material of reinforced plastic material

Abstract

For the production of mouldings, semifinished products comprising fibrous sheet-like structures and a melt of a thermoplastic material are used. The semifinished products are heated to temperatures up to the softening point of the thermoplastics and deformed in a pressure zone and adhesively bonded to one another. At least one semifinished product has a fibrous sheet-like structure with exclusively longitudinally directed fibres; it is attached to partial regions of the other semifinished product or products in such a way that the fibres run substantially in the direction of the main mechanical stressing of the mouldings.

Description

Die Herstellung von Halbzeugen bzw. Formkörpern aus faserverstärkten thermoplastischen Kunststoffen ist bekannt. Bei dem Verfahren gemäß der DE-OS 23 12 816 werden zwei Glasfasermatten zunächst erwärmt und an­ schließend einer Druckzone zugeführt. An ihrem Zusammenführungspunkt wird geschmolzenes thermoplastisches Material zwischen die Matten eingebracht, welches dabei in die Matten eindringt. Erst beim unmittelbaren an­ schließenden Verpressen werden die Matten vollständig getränkt und die Luft daraus verdrängt. Dieses Verpressen findet zwischen kontinuierlich bewegten Bändern statt, wobei der Preßvorgang und das Abkühlen der Kunst­ stoff-Matten-Verbunde praktisch gleichzeitig erfolgen. Ein auf diese Weise gefertigtes Halbzeug ist in der Ebene isotrop, d.h. die Fasern sind statistisch verteilt und damit die Festigkeitseigenschaften in allen Rich­ tungen gleich. Zahlreiche Formkörper aus verstärkten Thermoplasten werden aber bevorzugt nur in einer Richtung beansprucht, so daß die Verwendung isotroper Halbzeuge in diesen Fällen höchst unwirtschaftlich ist.The production of semi-finished products or moldings from fiber-reinforced thermoplastic materials is known. In the process according to the DE-OS 23 12 816, two glass fiber mats are first heated and on finally fed to a pressure zone. At their merge point introduced molten thermoplastic material between the mats, which penetrates into the mats. Only with the immediate on closing presses, the mats are completely soaked and the Air displaced from it. This pressing takes place between continuously moving belts take place, the pressing process and the cooling of the art Fabric-mat composites take place practically simultaneously. One this way The finished semi-finished product is isotropic in the plane, i.e. the fibers are statistically distributed and thus the strength properties in all rich same. Numerous moldings made from reinforced thermoplastics but preferably only claimed in one direction, so use isotropic semi-finished products is highly uneconomical in these cases.

Weiterhin sind in der Firmenschrift "Forschung und Entwicklung" von BASF (erschienen Oktober 1986) Halbzeuge aus faserverstärkten Thermoplasten beschrieben, die zusätzlich zu den Matten mit wirrer Faserverteilung auch in einer Richtung ausgerichtete Glasfasern aufweisen. Die orientierten Glasfasern sind jedoch über die ganze Länge der Halbzeuge in immer gleicher Menge vorhanden, d.h. die Zuordnung größerer oder kleinerer Mengen gerichtetere Glasfasern entsprechend den Bereichen eines Form­ körpers mit größerer bzw. geringerer Beanspruchung ist nicht möglich.Furthermore, in the company publication "Research and Development" from BASF (published October 1986) Semi-finished products made of fiber-reinforced thermoplastics described in addition to the mats with tangled fiber distribution too have unidirectional glass fibers. The oriented However, glass fibers are always in the entire length of the semi-finished products same quantity available, i.e. assigning larger or smaller Amounts of more directional glass fibers according to the areas of a shape body with greater or lesser stress is not possible.

Es war daher Aufgabe der Erfindung, anzugeben, wie Formkörper aus faser­ verstärkten Kunststoffen eine bevorzugte Verstärkung in einer Richtung er­ halten können, wobei auch in dieser Richtung eine unterschiedliche Bean­ spruchung der Formkörper berücksichtigt werden soll.It was therefore an object of the invention to specify how molded articles made of fiber reinforced plastics he preferred reinforcement in one direction can hold, with a different bean in this direction stress of the molded body should be taken into account.

Diese Aufgabe wird durch die Verwendung von Halbzeugen aus faserver­ stärktem Kunststoff gelöst, wobei wenigstens ein Halbzeug ein faseriges Flächengebilde mit ausschließlich längsgerichteten Fasern aufweist und wobei das Halbzeug derart auf Teilbereichen des bzw. der anderen Halb­ zeuge(s) angebracht ist, daß die Fasern im wesentlichen in Richtung der hauptsächlichen mechanischen Beanspruchung der Formkörper verlaufen. This task is achieved through the use of semi-finished fiber strengthened plastic solved, at least one semi-finished product a fibrous Has flat structures with only longitudinal fibers and the semi-finished product in this way on partial areas of the other half witness (s) is attached that the fibers essentially in the direction of mainly mechanical stress on the molded body.  

Erfindungsgemäß sind am Aufbau der Formkörper isotrope und/oder anisotrope Halbzeuge sowie zur partiellen Verstärkung Halbzeuge mit einem faserigen Flächengebilde aus ausschließlich längsgerichteten Fasern beteiligt. Letztere werden nur an den Stellen der Formkörper angeordnet, an denen die aus Berechnungen oder Versuchen ermittelten größten Beanspruchungen zu erwarten sind. Sie werden mit Hilfe einer Schablone oder Maske auf dem oder den übrigen Halbzeug(en) positioniert und zusammen mit diesen ver­ preßt.According to the invention, the structure of the shaped bodies is isotropic and / or anisotropic Semi-finished products and for partial reinforcement semi-finished products with a fibrous Sheets made of exclusively longitudinal fibers are involved. The latter are only arranged at the locations of the shaped bodies where the greatest loads determined from calculations or tests are expected. You will be using a stencil or mask on the or positioned the other semi-finished product (s) and ver presses.

Als faserige Flächengebilde für die isotropen und anisotropen Halbzeuge kommen Gewebe oder Gelege, die z.B. durch Polymerfasern zusammengenäht sind, in Betracht. Eine Kombination mit Matten oder Vliesen ist möglich und in manchen Anwendungsfällen vorteilhaft. Die Flächengewichte dieser Gebilde liegen zwischen 100 und 1200, vorzugsweise zwischen 225 und 900 g/cm2. Die Gewebe können in Kett- und Schußrichtung Fasern unterschied­ licher Titer enthalten. Kettverstärkte Gewebe, deren Fasern zu 60 bis 95% in der Kettrichtung orientiert sind, werden besonders bevorzugt. Die Faserfeinheit der Faserbündel für Gewebe und Gelege beträgt etwa 10 bis etwa 3600 tex, zweckmäßig 20 bis 1200 tex.As a fibrous sheet for the isotropic and anisotropic semi-finished products, fabrics or scrims that are sewn together, for example, by polymer fibers, are suitable. A combination with mats or nonwovens is possible and advantageous in some applications. The basis weights of these structures are between 100 and 1200, preferably between 225 and 900 g / cm 2 . The fabrics can contain fibers of different titers in the warp and weft directions. Warp-reinforced fabrics, the fibers of which are oriented 60 to 95% in the warp direction, are particularly preferred. The fiber fineness of the fiber bundles for fabrics and scrims is about 10 to about 3600 tex, advantageously 20 to 1200 tex.

Für eine bessere Handhabung der faserigen Flächengebilde mit ausschließ­ lich längsgerichteten Fasern können diese auf einer Thermoplastfolie als Träger abgelegt und mit dieser vernadelt werden oder sie können mitein­ ander verklebt werden. Der Faserdurchmesser bei diesen Flächengebilden liegt im allgemeinen zwischen 5 und 30 µm.Exclude for better handling of the fibrous fabrics Lich longitudinal fibers can be used on a thermoplastic film Carrier stored and needled with it or they can be with be glued to others. The fiber diameter in these fabrics is generally between 5 and 30 microns.

Zur Herstellung der faserigen Flächengebilde werden Glasfasern bevorzugt eingesetzt, es können aber auch Kohlenstoff-Fasern, Fasern aus aromati­ schen Polyamiden oder anderen thermoplastischen Kunststoffen sowie Fasern aus verschiedenen Kunststoffen verwendet werden. Die faserigen Flächenge­ bilde werden in an sich bekannter Weise mit Kunststoff laminiert, in dem z.B. eine Kunststoffschmelze über eine Breitschlitzdüse extrudiert und von beheizten Walzen oder Preßbändern in das Fasermaterial eingedrückt wird. Es ist auch möglich, die faserigen Flächengebilde mit einer dünnflüssigen Kunststofflösung zu tränken und anschließend das Lösungsmittel zu ver­ dampfen oder den Kunststoff im Phasenumkehrverfahren auszufällen. Der Fasergehalt eines Halbzeuges kann in weiten Grenzen variieren und liegt im allgemeinen zwischen 20 und 60 Gew.%. Für Halbzeuge mit einem faserigen Flächengebilde mit ausschließlich längsgerichteten Fasern wird dem Flächengebilde nur so viel Thermoplastschmelze hinzugefügt, daß ein Faser­ anteil von etwa 70 bis etwa 90 Gew.% erreicht wird. Die Halbzeugdicke kann je nach Flächengewicht der faserigen Gebilde etwa 0,5 bis 10 mm, vorzugs­ weise 1 bis 4 mm, betragen. Glass fibers are preferred for the production of the fibrous sheets used, but it can also carbon fibers, fibers from aromati polyamides or other thermoplastic materials and fibers made of different plastics. The fibrous area Images are laminated with plastic in a manner known per se, in which e.g. a plastic melt is extruded through a slot die and from heated rollers or press belts is pressed into the fiber material. It is also possible to use a thin viscous fibrous sheet Soak plastic solution and then ver the solvent vaporize or precipitate the plastic in a reverse phase process. The The fiber content of a semi-finished product can vary within wide limits and lies in the generally between 20 and 60% by weight. For semi-finished products with a fibrous Fabric with only longitudinal fibers is the Sheets only added so much thermoplastic melt that a fiber proportion of about 70 to about 90% by weight is reached. The semi-finished product can depending on the basis weight of the fibrous structures about 0.5 to 10 mm, preferably as 1 to 4 mm.  

Als Kunststoffe für das Laminieren oder Tränken der faserigen Flächenge­ bilde eignen sich praktisch alle thermoplastisch verarbeitbaren Kunst­ stoffe, beispielsweise Olefinpolymerisate, wie Polyethylen oder Poly­ propylen; Styrolpolymerisate, wie Polystyrol oder Copolymere des Styrols; Chlor enthaltende Polymerisate, wie Polyvinylchlorid oder chlorierte Poly­ olefine; Polyamide, Polymethylmethacrylat, Polycarbonat sowie Mischungen dieser Polymerisate.As plastics for laminating or soaking the fibrous area Images are suitable for practically all thermoplastically processable art substances, for example olefin polymers, such as polyethylene or poly propylene; Styrene polymers, such as polystyrene or copolymers of styrene; Polymers containing chlorine, such as polyvinyl chloride or chlorinated poly olefins; Polyamides, polymethyl methacrylate, polycarbonate and mixtures of these Polymers.

Diese Kunststoffe können die üblichen Zusatzstoffe, wie Füllstoffe, Pig­ mente, Farbstoffe, Antistatika, Stabilisatoren, Flammschutzmittel oder Gleitmittel enthalten.These plastics can be the usual additives such as fillers, pig elements, dyes, antistatic agents, stabilizers, flame retardants or Lubricant included.

Die so hergestellten Halbzeuge werden nun zunächst auf die Maße des zu fertigenden Formkörpers zugeschnitten und auf Temperaturen bis zum Er­ weichungspunkt der Thermoplaste erwärmt. Dieses kann in einem Umluftofen oder durch Infrarotbestrahlung erfolgen. Anschließend werden die Halbzeuge in ein Preßwerkzeug eingelegt, wobei das oder die Halbzeuge mit aus­ schließlich längsgerichteten Fasern entsprechend positioniert wird bzw. werden, und gemeinsam verpreßt. Das Verpressen wird unter Abkühlung vor­ genommen. Insgesamt haben sich für eine homogene Verbindung der Halbzeuge Preßdrücke zwischen 10 und 30 bar als vorteilhaft erwiesen.The semi-finished products produced in this way are now first to the dimensions of the manufacturing molded body and cut to temperatures up to Er softening point of the thermoplastics warmed. This can be done in a convection oven or by infrared radiation. Then the semi-finished products placed in a press tool, the semi-finished product or products with finally longitudinal fibers are positioned accordingly or and pressed together. The pressing is done before cooling taken. Overall, have opted for a homogeneous connection of the semi-finished products Pressing pressures between 10 and 30 bar have proven to be advantageous.

Auf diese Weise lassen sich zahlreiche Formkörper mit partieller Ver­ stärkung herstellen, beispielsweise Stoßfängerträger, Schürzen, Schutz­ leisten, Spurstangen, A-, B- und C-Säulen im PKW und dergleichen. Außer­ halb des Fahrzeugbaus können auch Bögen für den Schießsport sowie Ski ge­ fertigt werden. Für alle Anwendungen gilt, daß die Formkörper sowohl Rechteckquerschnitt als auch U- oder T-förmigen Querschnitt haben können.In this way, numerous moldings with partial ver Manufacture strengthening, for example bumper beams, aprons, protection afford, tie rods, A, B and C pillars in cars and the like. Except Half of vehicle construction can also be used for archery and skiing be manufactured. It applies to all applications that the moldings both Rectangular cross section as well as U or T-shaped cross section.

Die Verwendung von Halbzeugen aus faserverstärktem Kunststoff ist in der Zeichnung am Beispiel eines Stoßfängerträgers schematisch dargestellt und nachfolgend erläutert.The use of semi-finished products made of fiber-reinforced plastic is in the Drawing shown schematically using the example of a bumper beam and explained below.

Es zeigtIt shows

Fig. 1 eine Seitenansicht des Stoßfängerträgers im Schnitt, Fig. 1 is a side view of the bumper beam in section;

Fig. 2 einen Schnitt gemäß der Linie A-B der Fig. 1 und Fig. 2 shows a section along the line AB of Fig. 1 and

Fig. 3 einen Schnitt gemäß der Linie C-D der Fig. 1. Fig. 3 is a section along the line CD in FIG. 1.

Der Stoßfängerträger (1) ist nach Maßgabe seiner Befestigung am Fahrzeug ein Balken auf zwei Stützen mit beidseitigen Kragarmen. In Versuchen wird die im Fahrbetrieb tatsächlich zu erwartende Beanspruchung durch Schläge mit einem Pendel simuliert. Dabei wird sowohl auf einen Punkt zwischen den Befestigungen (2) am Fahrzeug, wie auch auf den Kragarm selbst geschlagen. Beide Schläge mit dem Pendel ergeben eine hohe Zugbeanspruchung an den Be­ festigungen (2) auf der geschlagenen Seite und zwischen den Befestigungen auf der Gegenseite des Stoßfängerträgers (1). Die entsprechenden Bereiche sind mit (3) und (4) bezeichnet (Fig. 1).The bumper bracket ( 1 ) is a beam on two supports with cantilever arms on both sides, depending on how it is attached to the vehicle. Experiments are used to simulate the stress that can actually be expected when driving with a pendulum. It is struck both at a point between the fastenings ( 2 ) on the vehicle, as well as on the cantilever itself. Both strikes with the pendulum result in high tensile stress on the fastenings ( 2 ) on the struck side and between the fastenings on the opposite side of the bumper beam ( 1 ). The corresponding areas are designated by ( 3 ) and ( 4 ) ( FIG. 1).

Gemäß den Fig. 2 und 3 enthalten die Bereiche (3) und (4) des Stoß­ fängerträgers (1) neben isotropen und anisotropen Halbzeugen (5) auch Halbzeuge (6) mit ausschließlich längsgerichteten Fasern. Die etwa 1 mm dicken Halbzeuge bestehen aus faserigen Flächengebilden aus Glasfasern und sind mit Polypropylen laminiert. Der Fasergehalt der Halbzeuge (5) beträgt etwa 40 Gew.% und der Fasergehalt der Halbzeuge (6) beträgt etwa 80 Gew.%.Referring to FIGS. 2 and 3, the areas (3) and (4) of the shock contain catcher support (1) in addition to isotropic and anisotropic semi-finished products (5) or semifinished products (6) with exclusively longitudinal fibers. The approximately 1 mm thick semi-finished products consist of fibrous sheet-like structures made of glass fibers and are laminated with polypropylene. The fiber content of the semi-finished products ( 5 ) is approximately 40% by weight and the fiber content of the semi-finished products ( 6 ) is approximately 80% by weight.

Claims (3)

1. Verwendung von Halbzeugen aus faserverstärktem Kunststoff, welche aus faserigen Flächengebilden und einer Schmelze eines thermoplastischen Kunststoffes bestehen, auf Temperaturen bis zum Erweichungspunkt der Thermoplaste erwärmt und in einer Druckzone verformt und miteinander verhaftet werden, für die Herstellung von Formkörpern, insbesondere Stoßfängerträger, wobei wenigstens ein Halbzeug ein faseriges Flächen­ gebilde mit ausschließlich längsgerichteten Fasern aufweist und wobei das Halbzeug derart auf Teilbereichen des bzw. der anderen Halb­ zeuge(s) angebracht ist, daß die Fasern im wesentlichen in Richtung der hauptsächlichen mechanischen Beanspruchung der Formkörper ver­ laufen.1. Use of semi-finished products made of fiber-reinforced plastic, which are made of fibrous sheets and a melt of a thermoplastic Insist on temperatures up to the softening point of the plastic Thermoplastics heated and deformed in a pressure zone and together be arrested for the production of moldings, in particular Bumper support, at least one semi-finished product having a fibrous surface has structures with only longitudinal fibers and where the semi-finished product in this way on partial areas of the other half witness (s) is attached that the fibers essentially in the direction the main mechanical stress on the moldings ver to run. 2. Halbzeug für die Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß die längsgerichteten Fasern aus Glas, Kohlenstoff und/oder Kunst­ stoff bestehen.2. Semi-finished product for use according to claim 1, characterized in that that the longitudinal fibers of glass, carbon and / or art consist of fabric. 3. Halbzeug nach Anspruch 2, dadurch gekennzeichnet, daß der Faseranteil etwa 70 bis 90 Gew.% beträgt.3. Semi-finished product according to claim 2, characterized in that the fiber content is about 70 to 90% by weight.
DE19883843535 1988-12-23 1988-12-23 Use of semifinished products of fibre-reinforced plastic for the production of mouldings, in particular bumper brackets Withdrawn DE3843535A1 (en)

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DE19883843535 DE3843535A1 (en) 1988-12-23 1988-12-23 Use of semifinished products of fibre-reinforced plastic for the production of mouldings, in particular bumper brackets

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Cited By (12)

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FR2684595A1 (en) * 1991-09-16 1993-06-11 Solvay SUPERFICIALLY REINFORCED THERMOPLASTIC MATERIAL PLATE AND METHODS FOR MAKING SAME.
US5265925A (en) * 1992-11-05 1993-11-30 Ford Motor Company Energy dissipating bumper assembly
US5520758A (en) * 1992-04-29 1996-05-28 Davidson Textron Inc. Bumper preform and method of forming same
DE19733065A1 (en) * 1997-01-23 1998-07-30 Sika Ag Ribbon slat for reinforcing components and processes for their production
DE19733067A1 (en) * 1997-07-31 1999-02-04 Sika Ag Ribbon slat for reinforcing components and method for attaching the ribbon slat to a component
DE102007015317A1 (en) * 2007-03-30 2008-10-02 Rehau Ag + Co Use of a reinforced thermoplastic composite
WO2012072405A1 (en) * 2010-12-02 2012-06-07 Toho Tenax Europe Gmbh Uni-directional fibre preform having slivers and consisting of reinforcing fibre bundles, and a composite material component
FR3051711A1 (en) * 2016-05-26 2017-12-01 Faurecia Automotive Ind METHOD FOR MANUFACTURING EQUIPMENT PIECE
WO2019086348A1 (en) * 2017-10-30 2019-05-09 Teijin Carbon Europe Gmbh Component for absorbing impact force
US10328660B2 (en) * 2014-03-13 2019-06-25 Aisin Takaoka Co., Ltd. Composite structure and manufacturing method thereof
WO2019120718A1 (en) * 2017-12-18 2019-06-27 Bayerische Motoren Werke Aktiengesellschaft Method for the production of a fibre composite component
EP3687776B1 (en) * 2017-09-26 2023-06-07 Cranfield University Method of manufacturing a moulded article and moulded article obtained thereby

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FR2684595A1 (en) * 1991-09-16 1993-06-11 Solvay SUPERFICIALLY REINFORCED THERMOPLASTIC MATERIAL PLATE AND METHODS FOR MAKING SAME.
BE1005387A3 (en) * 1991-09-16 1993-07-13 Solvay Thermoplastic plate strengthened surface and methods for its implementation.
US5520758A (en) * 1992-04-29 1996-05-28 Davidson Textron Inc. Bumper preform and method of forming same
US5265925A (en) * 1992-11-05 1993-11-30 Ford Motor Company Energy dissipating bumper assembly
DE19733065A1 (en) * 1997-01-23 1998-07-30 Sika Ag Ribbon slat for reinforcing components and processes for their production
DE19733067A1 (en) * 1997-07-31 1999-02-04 Sika Ag Ribbon slat for reinforcing components and method for attaching the ribbon slat to a component
DE102007015317A1 (en) * 2007-03-30 2008-10-02 Rehau Ag + Co Use of a reinforced thermoplastic composite
US8840988B2 (en) 2010-12-02 2014-09-23 Toho Tenax Europe Gmbh Fiber preform made from reinforcing fiber bundles and comprising unidirectional fiber tapes, and composite component
WO2012072405A1 (en) * 2010-12-02 2012-06-07 Toho Tenax Europe Gmbh Uni-directional fibre preform having slivers and consisting of reinforcing fibre bundles, and a composite material component
AU2011335297B2 (en) * 2010-12-02 2014-10-02 Toho Tenax Europe Gmbh Uni-directional fibre preform having slivers and consisting of reinforcing fibre bundles, and a composite material component
RU2583017C2 (en) * 2010-12-02 2016-04-27 Тохо Тенакс Ойропе Гмбх Unidirectional fibrous tape-containing fibrous workpiece made from bundles of reinforcing fibres and structural element made from composite material
US10328660B2 (en) * 2014-03-13 2019-06-25 Aisin Takaoka Co., Ltd. Composite structure and manufacturing method thereof
FR3051711A1 (en) * 2016-05-26 2017-12-01 Faurecia Automotive Ind METHOD FOR MANUFACTURING EQUIPMENT PIECE
EP3687776B1 (en) * 2017-09-26 2023-06-07 Cranfield University Method of manufacturing a moulded article and moulded article obtained thereby
WO2019086348A1 (en) * 2017-10-30 2019-05-09 Teijin Carbon Europe Gmbh Component for absorbing impact force
CN111328366A (en) * 2017-10-30 2020-06-23 帝人碳纤维欧洲有限公司 Component for absorbing impact forces
WO2019120718A1 (en) * 2017-12-18 2019-06-27 Bayerische Motoren Werke Aktiengesellschaft Method for the production of a fibre composite component
US11376805B2 (en) 2017-12-18 2022-07-05 Bayerische Motoren Werke Aktiengesellschaft Method for the production of fiber composite component

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