WO1996002715A1 - Synthetic fibres for mixing with a hardenable compound, especially concrete or mortar - Google Patents

Synthetic fibres for mixing with a hardenable compound, especially concrete or mortar Download PDF

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Publication number
WO1996002715A1
WO1996002715A1 PCT/CH1995/000161 CH9500161W WO9602715A1 WO 1996002715 A1 WO1996002715 A1 WO 1996002715A1 CH 9500161 W CH9500161 W CH 9500161W WO 9602715 A1 WO9602715 A1 WO 9602715A1
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WO
WIPO (PCT)
Prior art keywords
fibers
kunststoffasem
fibres
mass
bundle
Prior art date
Application number
PCT/CH1995/000161
Other languages
German (de)
French (fr)
Inventor
Kurt Frech
Original Assignee
Fortatech Ag
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Filing date
Publication date
Application filed by Fortatech Ag filed Critical Fortatech Ag
Publication of WO1996002715A1 publication Critical patent/WO1996002715A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • E04C5/073—Discrete reinforcing elements, e.g. fibres
    • E04C5/076—Specially adapted packagings therefor, e.g. for dosing

Definitions

  • Plastic breath for admixing in a hardening mass especially concrete or mortar
  • the invention relates to plastic fibers for admixing in a hardening mass, in particular concrete or mortar, which are formed from a large number of fibrillated, monofilament or multifilament fibers.
  • plastic aspirators are loosely filled into bags or the like before being introduced into a mixer.
  • this relatively voluminous packaging requires a lot of space and is therefore associated with high storage and transport costs. Accurate dosing of conventionally packaged plastic breaths is also difficult to achieve.
  • the object of the present invention is.
  • plastic brews according to the type described in the introduction which take up less volume when packaged, can be fed into a mass in a very precisely metered manner and are distributed very rapidly and homogeneously therein.
  • the object is achieved in that the fibers are held together by a covering material to form a bundle, the latter dissolving in the mass and allowing the loose fibers thus released to be mixed uniformly in the mass.
  • the fibers wound into a bundle can be filled into bags with a significantly reduced volume compared to conventionally loose packed plastic fibers, for example the storage of such filled bags as well as the transport of the same is associated with a reduced volume and thus costs can be reduced.
  • a mass to be loaded can be reinforced with a precisely metered amount of plastic breath.
  • the enveloping material surrounding these fibers is water-soluble and is produced from a cellulose tape which wraps around the fibers in a helical manner, the cellulose tape being stuck together by means of a likewise water-soluble adhesive.
  • Fig. 1 is a perspective view of an inventive bundle of plastic fibers.
  • Fig. 1 shows Kunststoffasem 1 5, which are used for admixing in a hardening mass, in particular concrete, mortar or gypsum, and which are made of a variety of single or multi-fiber, fibrillated, monofilament or multifilament, provided with a certain length Fibers 14 are formed.
  • plastic fibers 15 which are made of polypropylene for example, has proven itself very well in construction technology because, as mentioned, it increases the properties of hardened components provided with them, such as concrete walls or the like leads and, as a result, extends their service life.
  • Such an admixture or reinforcement, as it is called in technical jargon, of plastic elements is particularly suitable for plastering, shotcrete, prefabricated components.
  • the fibers 14 are held together by a wrapping material 16 to form a bundle 10.
  • the covering material 1 6 is formed from a water-soluble substance so that it dissolves in the mass used in particular as concrete or mortar and enables the loose fibers 14 which are released to be mixed uniformly and homogeneously in the mass.
  • the fibers 14 of equal length are arranged in a plurality approximately parallel to one another and also parallel to the longitudinal axis of the bundle 10 and are held together by the enveloping material 16 surrounding them. With this parallel arrangement of the fibers to one another, it is ensured that they can be easily detached from one another after being poured into a mass and after the casing material has been detached.
  • the wrapping material 16 is advantageously made of a cellulose tape surrounding the fibers 14, preferably helically wrapped around them, the cellulose tape being stuck together by means of a likewise water-soluble adhesive in such a way that the adhesive point comes to lie between the overlapping parts of the cellulose tape and does not adhere the fibers become.
  • Such a bundle 10 preferably has a diameter between 5 and 100 millimeters and a length between 5 and 100 millimeters.
  • the outside diameter of this bundle is 25 millimeters and its length is 19 millimeters, meanwhile the individual fibers 14 have a diameter between 0.01 and 1 millimeter, these fibers 14 being made of polypropylene. In principle, however, they could also be made from a different plastic material.
  • a fibrillated or multi-fiber fiber 14 is to be understood as one that is designed in the form of a band and has non-continuous slots arranged parallel to one another, through which a net-like structure is created when the band-shaped fiber is pressed apart.
  • Such a bundle 10 is essentially produced in such a way that the fibers 14, each wound on a spool, are parallel and ⁇ .
  • the fibers 14 can be separated by means of the water jet process, as a result of which they do not stick to one another at the point of separation, because it must be ensured under all circumstances that after the bundles have been mixed in, for example, in a mixer and after the casing material has dissolved, the fibers 14 become separated Distribute them separately from each other in the concrete mass so that a homogeneous, three-dimensional distribution of these individual fibers is achieved.
  • bundles 1 0 are also advantageously filled in a certain number s into a cellulose bag, which together with the contents can be thrown into the mass.
  • the wrapping material could also be provided from the fibers consisting of plastic or other dissolvable materials, which are wrapped around the fibers bundled parallel to one another in a loose manner, so that these as well as the wrapping material after the bundle has been added dissolve into the mass.
  • the fiber bundle could also be held together by one or more ribbons or cords, which do not encompass the fibers over the entire length, as shown in FIG. 1, but rather at a selectable distance from one another, the bundle being arranged in a loop.
  • the bundled fibers can of course also be detached from the enveloping material surrounding them before the plastic fibers are mixed in and thus thrown into a container filled with the concrete mixture.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

The synthetic fibres (14) to be used mixed with a hardenable concrete or mortar compound consist of a plurality of single or multi-stranded fibres (14) of a given length. Said fibres (16) are wound into a bunch (10) and held together by a casing material (16) which dissolves in the concrete compound and permits uniform mixing of the fibres (14) thus released in the compound. The fibres (14) are preferably approximately mutually parallel and the surrounding casing material (16) is water-soluble and consists of a cellulose strip wound around the fibres, while the cellulose strip is secured by a water-soluble adhesive. As against the prior art loose packaging of such synthetic fibres, this formation of the invention of fibres wound into a bunch makes it possible for them to be, for example, bagged, stored and transported in a considerably reduced volume.

Description

Kunststoffasem zur Beimischung in eine aushärtende Masse, insbesondere Beton oder Mörtel Plastic breath for admixing in a hardening mass, especially concrete or mortar
Die Erfindung betrifft Kunststoffasem zur Beimischung in eine aus¬ härtende Masse, insbesondere Beton oder Mörtel, die aus einer Viel¬ zahl von fibrillierten, monofilen oder multifilen Fasern gebildet sind.The invention relates to plastic fibers for admixing in a hardening mass, in particular concrete or mortar, which are formed from a large number of fibrillated, monofilament or multifilament fibers.
Es ist allgemein bekannt, Fasern, wie zum Beispiel Stahl-, Asbest-, Glas- oder Kunststoffasem einer noch nicht ausgehärteten plasti¬ schen Masse beizumischen. Mit dieser Hinzufügung von solchen Fa¬ sern wird grundsätzlich erreicht, dass die Masse, bspw. Beton, nach dem Aushärten eine bessere Festigkeit, sei es eine erhöhte Zug-, Druck- und/oder Schlagfestigkeit aufweist und mit diesen eine er- hebliche Verringerung der Rissbildung, insbesondere der Schwind¬ risse herbeigeführt wird. Die langjährige Erfahrung des Einsatzes von sol chen Fasern hat ge¬ zeigt, dass sich die Kunststoffasem vor allem zur Verhinderung von Schwindrissen des ausgehärteten Betons oder dergleichen auszeich¬ nen. Diese Fasern bestehen dabei aus fibrillierten, monofilen oder multifilen Einzelfasern mit verschiedenen Form- und Oberflä¬ chenstrukturen, welche auf eine bestimmte Länge, beispielsweise 38 Millimeter, geschnitten sind. Aus der Vielzahl von solchen Einzel¬ fasern bildet sich eine voluminöse Menge, die beispielsweise einem Matrixmischer beigegeben werden. Die Kunststoffasem mischen sich folglich gleichmässig oder homogen unter die umgewälzte Betonmasse.It is generally known to add fibers, such as steel, asbestos, glass or plastic fibers, to an as yet unhardened plastic mass. With the addition of such fibers, it is basically achieved that the mass, for example concrete, has a better strength after hardening, be it an increased tensile, compressive and / or impact strength, and with these a considerable reduction in the Crack formation, in particular the shrinkage cracks is brought about. The many years of experience with the use of such fibers has shown that the plastic fibers are particularly useful for preventing shrinkage cracks in the hardened concrete or the like. These fibers consist of fibrillated, monofilament or multifilament single fibers with different shape and surface structures, which are cut to a certain length, for example 38 millimeters. A large volume is formed from the large number of such individual fibers, which are added, for example, to a matrix mixer. The plastic elements consequently mix evenly or homogeneously among the circulated concrete mass.
Die Kunststoffasem sind vor dem Einbringen in einen Mischer lose in Säcke oder dergleichen abgefüllt. Diese relativ voluminöse Ab- packung benötigt aber viel Platz und sie ist daher mit hohen Lager- sowie Transportkosten verbunden. Auch ein genaues Dosieren von herkömmlich verpackten Kunststoffasem ist schwerlich realisierbar.The plastic aspirators are loosely filled into bags or the like before being introduced into a mixer. However, this relatively voluminous packaging requires a lot of space and is therefore associated with high storage and transport costs. Accurate dosing of conventionally packaged plastic breaths is also difficult to achieve.
Aufgabe der vorliegenden Erfindung besteht demgegenüber darin. Kunststoffasem nach der eingangs beschriebenen Gattung zu schaf¬ fen, die beim Abpacken weniger Volumen beanspruchen, sehr exakt dosiert in eine Masse zuführbar sind und sich darin sehr schnell und homogen verteilen.In contrast, the object of the present invention is. To create plastic brews according to the type described in the introduction, which take up less volume when packaged, can be fed into a mass in a very precisely metered manner and are distributed very rapidly and homogeneously therein.
Erfindungsgemäss ist die Aufgabe dadurch gelöst, dass die Fasern von einem Hüllmaterial zu einem Bündel zusammengehalten sind, wobei sich letzteres in der Masse löst und ein gleichmässiges Vermi¬ schen der damit freiwerdenden losen Fasern in der Masse ermög¬ licht.According to the invention, the object is achieved in that the fibers are held together by a covering material to form a bundle, the latter dissolving in the mass and allowing the loose fibers thus released to be mixed uniformly in the mass.
Mit dieser erfindungsgemässen Ausbildung der zu einem Bündel gewickelten Fasern können diese gegenüber herkömmlich losen ab¬ gepackten Kunststoffasem mit einem erheblich verminderten Vol u¬ men beispielsweise in Säcke abgefüllt werden, infolgedessen das La¬ gern solcher abgefüllter Säcke wi e auch das Transportieren derselben mit einem verminderten Volumen verbunden ist und dadurch Kosten gesenkt werden können. Zudem lässt sich eine zu beschickende Masse mit einer genau dosierten Menge von Kunststoffasem bewehren.With this embodiment of the fibers wound into a bundle according to the invention, they can be filled into bags with a significantly reduced volume compared to conventionally loose packed plastic fibers, for example the storage of such filled bags as well as the transport of the same is associated with a reduced volume and thus costs can be reduced. In addition, a mass to be loaded can be reinforced with a precisely metered amount of plastic breath.
Bei einer sehr vorteilhaften Ausführung ist das diese Fasern umge¬ bende Hüllmaterial wasserlöslich und aus einem die Fasern wendei¬ förmig umwickelnden Zelluloseband hergestellt, wobei das Zellulo¬ seband mittels eines ebenfalls wasserlöslichen Klebstoffes zusam¬ mengehaftet ist. Damit können diese Bündel auf einfachste Weise hergestellt werden und es ist gewährleistet, dass sich dieses Hüllma¬ terial in der Masse vollständig auflöst und darin keine Rückstände verbleiben.In a very advantageous embodiment, the enveloping material surrounding these fibers is water-soluble and is produced from a cellulose tape which wraps around the fibers in a helical manner, the cellulose tape being stuck together by means of a likewise water-soluble adhesive. These bundles can thus be produced in the simplest way and it is ensured that this wrapping material completely dissolves in the mass and no residues remain in it.
Ein Ausführungsbeispiel der Erfindung sowie weitere Vorteil e der¬ selben sind nachfolgend anhand der Zeichnung näher erläutert. Es zeigt:An embodiment of the invention and further advantages e same are explained below with reference to the drawing. It shows:
Fig. 1 eine perspektivische Darstellung auf ein erfindungsgemässes Bündel von Kunststoffasem.Fig. 1 is a perspective view of an inventive bundle of plastic fibers.
Fig. 1 zeigt Kunststoffasem 1 5, die zur Beimischung in eine aushär¬ tende Masse, insbesondere Beton, Mörtel oder auch Gips, verwendet werden und die aus einer Vielzahl von ein- oder mehrfaserigen, fibrillierten, monofilen oder multifilen, mit einer bestimmten Länge versehener Fasern 14 gebildet sind. Ein solches Beimi schen von Kunststoffasem 1 5 , die zum Bei spiel aus Polypropylen gefertigt sind, hat sich in der Bautechnik sehr bewährt, weil es - wie erwähnt - zu einer Erhöhung verschiedener Eigenschaften von mit diesen versehenen ausgehärteten Bauteilen, wie Betonwänden oder ähnli¬ chem führt und als Folge deren Standzeit verlängert. Eine solche Beimischung oder Bewehrung, wi e man es in der Fachsprache nennt, von Kunststoffasem eignet sich speziell für Verputz, Spritzbeton, vorfabrizierte Bauelemente. Töpfe oder dergleichen, Unterlagsböden oder auch für Anwendungen im Tiefbau. Erfindungsgemäss sind die Fasern 14 von einem Hüllmaterial 1 6 zu einem Bündel 10 zusammengehalten. Das Hüllmaterial 1 6 ist dabei aus einer wasserlöslichen Substanz gebildet, damit es sich in der insbesondere als Beton oder Mörtel verwendeten Masse auflöst und in der Masse ein gleichmässiges homogenes Vermischen der frei werdenden losen Fasern 14 ermöglicht. Die gleichlangen Fasern 14 sind in einer Vielzahl annähernd parallel zueinander und auch parallel zur Längsachse des Bündels 10 angeordnet und von dem diese umgebenden Hüllmaterial 16 zusammengehalten. Mit dieser parallelen Anordnung der Fasern zueinander i st sichergestellt, dass sich diese nach dem Einfüllen in eine Masse und nach dem Lösen des Hüllmaterials problemlos voneinander lösen. Das Hüllmaterial 16 ist vorteilhaft aus einem die Fasern 14 umgebenden, vorzugsweise wendeiförmig um diese gewickelten Zel luloseband hergestellt, wobei das Zelluloseband mittels eines ebenfalls wasserlöslichen Klebstoffes derart zusammengehaftet ist, dass die Klebstelle zwischen den überlappenden Teilen des Zellulosebandes zu liegen kommt und nicht die Fasern verklebt werden.Fig. 1 shows Kunststoffasem 1 5, which are used for admixing in a hardening mass, in particular concrete, mortar or gypsum, and which are made of a variety of single or multi-fiber, fibrillated, monofilament or multifilament, provided with a certain length Fibers 14 are formed. Such an admixture of plastic fibers 15, which are made of polypropylene for example, has proven itself very well in construction technology because, as mentioned, it increases the properties of hardened components provided with them, such as concrete walls or the like leads and, as a result, extends their service life. Such an admixture or reinforcement, as it is called in technical jargon, of plastic elements is particularly suitable for plastering, shotcrete, prefabricated components. Pots or the like, underlay floors or also for civil engineering applications. According to the invention, the fibers 14 are held together by a wrapping material 16 to form a bundle 10. The covering material 1 6 is formed from a water-soluble substance so that it dissolves in the mass used in particular as concrete or mortar and enables the loose fibers 14 which are released to be mixed uniformly and homogeneously in the mass. The fibers 14 of equal length are arranged in a plurality approximately parallel to one another and also parallel to the longitudinal axis of the bundle 10 and are held together by the enveloping material 16 surrounding them. With this parallel arrangement of the fibers to one another, it is ensured that they can be easily detached from one another after being poured into a mass and after the casing material has been detached. The wrapping material 16 is advantageously made of a cellulose tape surrounding the fibers 14, preferably helically wrapped around them, the cellulose tape being stuck together by means of a likewise water-soluble adhesive in such a way that the adhesive point comes to lie between the overlapping parts of the cellulose tape and does not adhere the fibers become.
Ein solches Bündel 1 0 weist vorzugswei se einen Durchmesser zwi¬ schen 5 und 1 00 Millimetern und eine Länge zwischen 5 und 1 00 Millimetern auf. In einer konkreten Ausführung beträgt der Aussen- durchmesser dieses Bündels 25 Millimeter und dessen Länge 1 9 Millimeter, derweil die einzelnen Fasern 14 einen Durchmesser zwi¬ schen 0.01 und 1 Millimeter aufweisen, wobei diese Fasern 14 aus Polypropylen gefertigt sind. Grundsätzlich könnten sie aber auch aus einem anderen Kunststoffmaterial hergestellt sein.Such a bundle 10 preferably has a diameter between 5 and 100 millimeters and a length between 5 and 100 millimeters. In a specific embodiment, the outside diameter of this bundle is 25 millimeters and its length is 19 millimeters, meanwhile the individual fibers 14 have a diameter between 0.01 and 1 millimeter, these fibers 14 being made of polypropylene. In principle, however, they could also be made from a different plastic material.
Unter einer fibrillierten oder mehrfaserigen Faser 14 ist eine solche zu verstehen, die bandförmig ausgebildet ist und nicht durchgehende, parallel zueinander angeordnete Schlitze aufweist, durch welche beim Auseinanderdrücken der bandförmigen Faser eine netzartige Struktur entsteht.A fibrillated or multi-fiber fiber 14 is to be understood as one that is designed in the form of a band and has non-continuous slots arranged parallel to one another, through which a net-like structure is created when the band-shaped fiber is pressed apart.
Ein solches Bündel 10 wird im wesentlichen derart hergestellt, dass die jeweils auf einer Spule aufgewickelten Fasern 14 parallel neben- ς .Such a bundle 10 is essentially produced in such a way that the fibers 14, each wound on a spool, are parallel and ς.
einander zusammengeführt, vom Hüllmaterial 16 umwickelt und ab- schliessend auf eine gewünschte Länge quer durchgetrennt werden. Die Fasern 14 können dabei mittels dem Wasserstrahl verfahren getrennt werden, wodurch sie bei der Trennstelle nicht aneinander verkleben, denn es muss unter allen Umständen gewährleistet sein, dass nach dem Beimischen der Bündel beispielsweise in einen Mischer und nach dem Auflösen des Hüllmaterials die Fasern 14 sich losgelöst voneinander in der Betonmasse verteilen, damit eine homo¬ gene, dreidimensionale Verteilung dieser einzelnen Fasern erreicht wird.brought together, wrapped by the wrapping material 16 and finally cut transversely to a desired length. The fibers 14 can be separated by means of the water jet process, as a result of which they do not stick to one another at the point of separation, because it must be ensured under all circumstances that after the bundles have been mixed in, for example, in a mixer and after the casing material has dissolved, the fibers 14 become separated Distribute them separately from each other in the concrete mass so that a homogeneous, three-dimensional distribution of these individual fibers is achieved.
Diese Bündel 1 0 werden vorteilhaft ebenfall s in einer bestimmten Anzahl in einen Zellulosesack abgefüllt, welcher mitsamt dem Inhalt in die Masse geworfen werden kann.These bundles 1 0 are also advantageously filled in a certain number s into a cellulose bag, which together with the contents can be thrown into the mass.
Theoretisch könnte das Hüllmaterial auch aus den aus Kunststoffa¬ sem bestehenden Fasern oder anderen auflösbaren Materialien vor¬ gesehen sein, die um die parallel zueinander gebündelten Fasern in einer losen Art und Weise umhüllt sind, sodass sich diese wie auch das Hüllmaterial nach dem Beigeben des Bündels in die Masse lösen.Theoretically, the wrapping material could also be provided from the fibers consisting of plastic or other dissolvable materials, which are wrapped around the fibers bundled parallel to one another in a loose manner, so that these as well as the wrapping material after the bundle has been added dissolve into the mass.
Das Faserbündel könnte auch von einem oder mehreren Bändern oder Schnüren zusammengehalten sein, welche die Fasern nicht, wie in Fig. 1 dargestellt ist, über die gesamte Länge umfassen, sondern in einem wählbaren Abstand zueinander, das Bündel umschlingend an¬ geordnet sein.The fiber bundle could also be held together by one or more ribbons or cords, which do not encompass the fibers over the entire length, as shown in FIG. 1, but rather at a selectable distance from one another, the bundle being arranged in a loop.
Die gebündelten Fasern können selbstverständlich auch vor dem Beimischen der Kunststoffasem von dem diese umgebenden Hüllma¬ terial gelöst und so in einen mit dem Betongemisch gefüllten Behäl¬ ter eingeworfen werden. The bundled fibers can of course also be detached from the enveloping material surrounding them before the plastic fibers are mixed in and thus thrown into a container filled with the concrete mixture.

Claims

PATENTANSPRÜCHE PATENT CLAIMS
1. Kunststoffasem zur Beimischung in eine aushärtende Masse, insbesondere Beton oder Mörtel, die aus einer Vielzahl von fibril¬ lierten, monofilen oder multifilen Fasern gebildet sind, dadurch ge¬ kennzeichnet, dass die Fasern ( 14) von einem Hüllmaterial ( 1 6) zu einem Bündel ( 10) zusammengehalten sind, wobei sich letzteres in der Masse löst und ein gleichmässiges Vermi schen der damit frei ¬ werdenden losen Fasern ( 14) in der Masse ermöglicht.1. Kunststoffasem for admixture in a hardening mass, in particular concrete or mortar, which are formed from a large number of fibrillated, monofilament or multifilament fibers, characterized in that the fibers (14) are made of a covering material (1 6) a bundle (10) are held together, the latter dissolving in the mass and allowing a uniform mixing of the free fibers (14) thus released in the mass.
2. Kunststoffasem nach Anspruch 1 , dadurch gekennzeichnet, dass das di e Fasern ( 14) umgebende Hüllmaterial ( 1 6) aus einer wasserlöslichen Substanz gebildet i st. 2. Kunststoffasem according to claim 1, characterized in that the di e fibers (14) surrounding envelope material (1 6) i st formed from a water-soluble substance.
3. Kunststoffasem nach Anspruch 2. dadurch gekennzeichnet, dass das Hüllmaterial ( 1 6) aus einem die Fasern umgebenden Zellu- loseband hergestellt ist, wobei das Zelluloseband mittel s _eιnes ebenfalls wasserlöslichen Klebstoffes zusammengehaftet ist.3. Kunststoffasem according to claim 2. characterized in that the wrapping material (1 6) is made of a cellulose tape surrounding the fibers, the cellulose tape is also stuck together by means of water-soluble adhesive.
4. Kunststoffasem nach Anspruch 1 oder 2, dadurch gekenn¬ zeichnet, dass ein solches Bündel (10) einen Durchmesser zwischen 5 und 1 00 Millimetern und eine Länge zwischen 5 und 1 00 Millime¬ tern aufweist.4. Kunststoffasem according to claim 1 or 2, characterized gekenn¬ characterized in that such a bundle (10) has a diameter between 5 and 1 00 millimeters and a length between 5 and 1 00 millimeters.
5. Kunststoffasem nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Fasern ( 14) annähernd parallel zueinander und auch parallel zur Längsachse des Bündels ( 1 0) angeordnet sind.5. Kunststoffasem according to any one of claims 1 to 4, characterized in that the fibers (14) are arranged approximately parallel to each other and also parallel to the longitudinal axis of the bundle (1 0).
6. Kunststoffasem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Fasern ( 14) aus Polypropylen gefertigt sind und jeweils einen Durchmesser zwischen 0.01 und 1 Millimeter aufweisen.6. Kunststoffasem according to any one of the preceding claims, characterized in that the fibers (14) are made of polypropylene and each have a diameter between 0.01 and 1 millimeter.
7. Kunststoffasem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Bündel ( 1 0) hergestellt ist. indem die Fasern ( 14) von je einer Spule zusammengeführt, dann aneinan¬ der liegend vom Hüllmaterial ( 1 6) umwickelt und abschliessend auf eine gewünschte Länge quer durchgetrennt sind.7. Kunststoffasem according to any one of the preceding claims, characterized in that the bundle (1 0) is made. in that the fibers (14) are brought together by a bobbin, then wrapped around one another by the covering material (1 6) and finally cut transversely to a desired length.
8. Kunststoffasem nach Anspruch 7, dadurch gekennzeichnet, dass die Fasern ( 14) mittels Wasserstrahlverfahren trennbar sind.8. Kunststoffasem according to claim 7, characterized in that the fibers (14) are separable by means of water jet processes.
9. Kunststoffasem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bündel ( 1 0) in einer bestimmten Anzahl in einen in der Masse sich auflösenden Sack abgefüllt sind. 9. Kunststoffasem according to any one of the preceding claims, characterized in that the bundles (1 0) are filled in a certain number in a mass dissolving sack.
PCT/CH1995/000161 1994-07-20 1995-07-12 Synthetic fibres for mixing with a hardenable compound, especially concrete or mortar WO1996002715A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH230094A CH686367A5 (en) 1994-07-20 1994-07-20 Synthetic fibers for incorporation into thermosetting compositions, in particular concrete or mortar.
CH2300/94-2 1994-07-20

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WO2003025305A1 (en) * 2001-09-20 2003-03-27 Anders Henrik Bull Reinforcement element and method of producing a reinforcement element
US6780367B2 (en) 2000-06-28 2004-08-24 Dow Global Technologies Inc. Method for preparing a concrete article having reinforcing fibers frayed at their ends
FR2866264A1 (en) * 2004-02-13 2005-08-19 Jean Sebille Device for encasing, extracting and dosing fibres for the production of concretes and mortars under automated conditions
US6945686B2 (en) 2001-05-04 2005-09-20 Nv Bekaert Sa Method for dosing reinforcing fibres for the manufacturing of fibre concrete and the chain packing used
EP2206848A1 (en) 2008-12-29 2010-07-14 Centrum dopravniho vyzkumu, v.v.i. Capsules made from fiber and a wrapper of glue, method of their production and method of the production of the reinforced concrete with use of those capsules
EP2372034A1 (en) * 2010-12-16 2011-10-05 Centrum Dopravního Vyzkumu, V.v.i. Device for coiling fibres and for the production of capsules made of a coiled fibre and a wrapping of glue or frozen water
DE102015221837B4 (en) 2015-11-06 2023-10-12 Aross 3D Gmbh Process for producing a ceramic casting

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