DE9315083U1 - Composite fleece with needled rigid reinforcement elements - Google Patents

Composite fleece with needled rigid reinforcement elements

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Publication number
DE9315083U1
DE9315083U1 DE9315083U DE9315083U DE9315083U1 DE 9315083 U1 DE9315083 U1 DE 9315083U1 DE 9315083 U DE9315083 U DE 9315083U DE 9315083 U DE9315083 U DE 9315083U DE 9315083 U1 DE9315083 U1 DE 9315083U1
Authority
DE
Germany
Prior art keywords
reinforcing elements
composite
composite fleece
fleece
fleece according
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 - Lifetime
Application number
DE9315083U
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German (de)
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE9315083U priority Critical patent/DE9315083U1/en
Publication of DE9315083U1 publication Critical patent/DE9315083U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • 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
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/083—Combinations of continuous fibres or fibrous profiled structures oriented in one direction and reinforcements forming a two dimensional structure, e.g. mats
    • 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
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/543—Fixing the position or configuration of fibrous reinforcements before or during moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/02—Layer formed of wires, e.g. mesh
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/12—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
    • D04H3/045—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles for net manufacturing
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G27/00—Floor fabrics; Fastenings therefor
    • 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
    • B29K2105/0854—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 in the form of a non-woven mat
    • 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
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    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
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    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/08—Reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/38—Meshes, lattices or nets
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
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    • B32B2307/00—Properties of the layers or laminate
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    • B32B2307/546—Flexural strength; Flexion stiffness
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
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    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
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    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
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    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/05—Interconnection of layers the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Description

Beschreifeurfg" " : Description"" :

Verbund-Vlies mit eingenadelten steifen VerstärungkungselementenComposite fleece with needled stiff reinforcement elements

Die Neuerung bezieht sich auf ein Verbund-Vlies, bestehend aus Vlieslagen und einer dazwischenliegenden Verstärkungsschicht.The innovation relates to a composite fleece consisting of fleece layers and a reinforcing layer in between.

Derartige Verbund-Vliese in Sandwichbauweise sind allgemein bekannt und werden hauptsächlich im Bauwesen, &zgr;. &Bgr;. zum Abdecken von Untergrund, Wellen u. a., eingesetzt. Ihre Aufgabe ist die Erhöhung der Tragfähigkeit des Untergrundes oder die Vermeidung von Abrutschungen z. B. an Böschungen. Gleichzeitig ermöglichen die vlieslagen eine Nutzung als Filter bei Entwässerungen im Erd- und Grundbau, bei Brücken, Tunnels und Deponien.Such composite fleeces in sandwich construction are well known and are mainly used in construction, &zgr;. &Bgr;. to cover subsoil, waves, etc. Their purpose is to increase the load-bearing capacity of the subsoil or to prevent slippage, e.g. on embankments. At the same time, the fleece layers can be used as filters for drainage in earthworks and foundation engineering, bridges, tunnels and landfills.

Als weitere Einsatzmöglichkeit bietet sich der Einsatz als Abdeckung von Erdschichten in verseuchten Gebieten an, wo eine Verbreitung der Erdmaterials durch Umwelteinflüsse, z. B. Wind, vermieden werden muß. Insbesondere darauf zielt die vorliegende Erfindung ab.Another possible application is to cover layers of soil in contaminated areas, where the spreading of the soil material through environmental influences, e.g. wind, must be avoided. This is the particular aim of the present invention.

Bislang erreichen die angebotenen Verbund Vliese eine Verstärkung des Untergrundes aufgrund einer erhöhten Zugfestigkeit der Verstärkungselemente, wobei die Flexibilität dieser Elemente sehr hoch ist. Daraus ergibt sich, daß das Verbund-Vlies insgesamt relativ flexibel bleibt.To date, the composite fleeces offered have achieved reinforcement of the substrate due to the increased tensile strength of the reinforcing elements, whereby the flexibility of these elements is very high. This means that the composite fleece as a whole remains relatively flexible.

Bei dem oben genannten Einsatzbeispiel, wo es um die Abdeckung vqn verseuchtem Erdreich geht, ist diese Eigenschaft jedoch von Nachteil, wenn es um die Abdeckung von sehr weichem Untergrund geht, wie z. B. Schlämmen. Da ständige Einsacken bei Begehen einer solchen flexiblen Abdeckung ist nicht wünschenswert. Eine Erhöhung der Steifigkeit ist durch eine einfache Dimensionsvergrößerung der Verstärkungselemente denkbar. Dabei verursacht die Herstellung eines Verbund-Vlieses, mit einem solchen vergrößerten Kern, jedoch Probleme, besonders in der Anbindung der Vlieslagen an die Verstärkungselemente.In the above-mentioned application example, where it is about covering contaminated soil, this property is a disadvantage when it comes to covering very soft ground, such as sludge. Constant sinking when walking on such a flexible cover is not desirable. An increase in rigidity is conceivable by simply increasing the dimensions of the reinforcing elements. However, the production of a composite fleece with such an enlarged core causes problems, particularly in the connection of the fleece layers to the reinforcing elements.

Eine Anbindung durch Aufschmelzung von eventuell thermoplastisch ummantelten Kernelementen und Andrückung der Vlieslagen an die weiche Matrix schafft zwar eine feste Verbindung, bringt aber mehrere Nachteile mit sich. Zum einen können bei einer Andrückung die Andrück-Walzen nicht alle Verstarkungselemente erreichen, sondern nur die Elemente die in einer Ebene liegen. Die Folge ist ein sehr schlechter Vliesverbund. Zum anderen erfordert das gleichzeitige Erhitzen der zahlreichen Elemente, über die gesamte vliesbreite von bis zu sechs Meter, einen erheblichen Energieaufwand der die Produktionskosten erhöht.A connection by melting core elements, possibly coated with thermoplastic, and pressing the fleece layers onto the soft matrix creates a strong connection, but has several disadvantages. Firstly, when pressing, the pressure rollers cannot reach all of the reinforcing elements, but only those that are in one plane. The result is a very poor fleece bond. Secondly, the simultaneous heating of the numerous elements across the entire fleece width of up to six meters requires a considerable amount of energy, which increases production costs.

Auch eine thermische Verbindung durch Aufschmelzung der Vliesfasern ist aufwendig, wenn man die Eigenschaften der gesamten Vlieslage nicht verändern will.A thermal bond by melting the fleece fibers is also complex if you do not want to change the properties of the entire fleece layer.

Der Erfindung liegt die Aufgabe zugrunde, eine praktikable und kostengünstige Lösung zur Herstellung von steifen Verbundvliesen zu liefern, wobei die geforderten Eigenschaften des Verbund-Vlieses optimal erreicht werden, bei möglichst niedrigen Produktionskosten.The invention is based on the object of providing a practical and cost-effective solution for the production of rigid composite nonwovens, whereby the required properties of the composite nonwoven are optimally achieved at the lowest possible production costs.

Hierzu ist die Erfindung in erster Linie dadurch gekennzeichnet, daß in einem verbund-Vlies eine Kern-Konstruktion angebracht ist, die aus geeigneten Verstärkungselementen (2) in geeigneter Form, vorzugsweise in Form eines Gitters, besteht, und die die geforderten Eigenschaften in Zugfestigkeit und Steifigkeit erbringt. Als Verstarkungselemente sind vorzugsweise solche aus faserverstärkten Kunststoffen zu verwenden, da bei diesen das Verhältnis Festigkeit bzw. Steifigkeit zum Gewicht sehr günstig gewählt werden kann und das Material nur nicht sehr Korrosionsanfällig ist.For this purpose, the invention is primarily characterized in that a core structure is mounted in a composite fleece, which consists of suitable reinforcing elements (2) in a suitable form, preferably in the form of a grid, and which provides the required properties in terms of tensile strength and rigidity. Reinforcing elements made of fiber-reinforced plastics are preferably used, since the ratio of strength or rigidity to weight can be selected very favorably and the material is not very susceptible to corrosion.

Die Verstärkungselemente (*2)* könne'n durch "Verklebung mit thermoplastischem oder duroplastischem Harz an den Kreuzungspunkten (4) verbunden sein. Möglich ist auch eine Verbindung der Elemente durch Verknotung mit Draht oder eine einfache formschlüssige Verbindung der Verstärkungselemente, die durch die Einnadelung später fixiert ist.The reinforcement elements (*2)* can be connected by bonding with thermoplastic or thermosetting resin at the crossing points (4). It is also possible to connect the elements by knotting them with wire or by a simple form-fitting connection of the reinforcement elements, which is later fixed by needling.

Weiterhin ist die Erfindung dadurch gekennzeichnet, daß die Anbindung dieser Kern-Konstruktion an die beiden Vlieslagen (l) durch Vernadelung{3) der beiden Vlieslagen um die Verstärkungselemente (2) herum erfolgt.Furthermore, the invention is characterized in that the connection of this core construction to the two fleece layers (1) is carried out by needling{3) the two fleece layers around the reinforcing elements (2).

Dadurch werden die Verstärkungselemente, und damit die Kern-Konstruktion, an ihrer Position fixiert und es ergibt sich sowohl eine feste Verbindung zwischen diesen und den Vlieslagen (i), als auch eine feste Verbindung zwischen den Vlieslagen selbst.This fixes the reinforcing elements, and thus the core construction, in their position and results in both a firm connection between these and the fleece layers (i), as well as a firm connection between the fleece layers themselves.

Die feste Verbindung zwischen den Vlieslagen hat eine Verbesserung ihrer mechanischen Eigenschaften zufolge, da sie jetzt wie ein dickes Vlies Kräfte aufnehmen können. Daher können auch mehrere dünne Vlieslagen verwendet werden, was den Materialaufwand reduziert.The strong connection between the fleece layers results in an improvement in their mechanical properties, as they can now absorb forces like a thick fleece. Therefore, several thin fleece layers can also be used, which reduces the amount of material required.

Ein Nebeneffekt der vernadelung ist, daß die Vernadelung des Verbundvlieses mit der gleichen Nadelmaschine erfolgen kann, mit der auch die Vlieslägen hergestellt werden. Im Nadelbrett müssen dazu nur an den Orten Aussparungen vorhanden sein, an denen beim Verbund-Vlies die Verstärkungselemente liegen.A side effect of needling is that the needling of the composite fleece can be carried out using the same needling machine that is used to produce the fleece layers. The needle board only needs to have recesses in the places where the reinforcement elements are located in the composite fleece.

Die Abbildungen zeigen:The pictures show:

Fig. l: Ein aufgerissenes Verbund-vlies nach Art der Erfindung mit Verstärkungselementen (2) mit rundem Querschnitt in Gitterform.Fig. l: A torn composite fleece according to the invention with reinforcing elements (2) with a round cross-section in grid form.

Fig. 2: Ein Querschnitt durch ein Verbund-Vlies nach Art der ErfindungFig. 2: A cross-section through a composite fleece according to the invention

Claims (9)

1. Verbund-Vlies, bestehend aus mindestens zwei Vlieslagen und einer dazwischenliegenden Kern-Konstruktion aus steifen Verstärkungselementen, dadurch gekennzeichnet, daß die Verstärkungselemente in ihrer Position, durch Vernadelung der Vliese um die Verstärkungselemente herum, fixiert werden.1. Composite fleece, consisting of at least two fleece layers and an intermediate core construction of rigid reinforcing elements, characterized in that the reinforcing elements are fixed in their position by needling the fleece around the reinforcing elements. 2. verbund-Vlies nach Anspruch l, dadurch gekennzeichnet, daß die Verstärkungselemente in beliebigen Winkeln, vorzugsweise rechtwinklig in Form eines Gitters, miteinander gekreuzt werden.2. composite fleece according to claim 1, characterized in that the reinforcing elements are crossed with each other at any angle, preferably at right angles in the form of a grid. 3. Verbund-Vlies nach Anspruch 2, dadurch gekennzeichnet, daß die miteinander verkreuzten Verstärkungselemente aus unterschiedlichen Materialien mit verschiedenen Querschnitten bestehen könne, vorzugsweise mit gleichen Querschnitten und gleichem Material.3. Composite fleece according to claim 2, characterized in that the interlaced reinforcing elements can consist of different materials with different cross-sections, preferably with the same cross-sections and the same material. 4. verbund-Vlies nach Anspruch &igr; oder 2, dadurch gekennzeichnet, daß die Verstärkungselemente einen polygonalen oder runden Querschnitt besitzen, vorzugsweise rund mit einem Durchmesser von l - 5 mm.4. composite fleece according to claim 1 or 2, characterized in that the reinforcing elements have a polygonal or round cross-section, preferably round with a diameter of 1 - 5 mm. 5. Verbund-vlies nach Anspruch l oder 2, dadurch gekennzeichnet, daß die Verstärkungselemente aus faserverstärkten Kunststoffen bestehen, mit Glas- Carbon- oder Aramidfasern in duroplastischer oder thermoplastischer Matrix.5. Composite fleece according to claim 1 or 2, characterized in that the reinforcing elements consist of fiber-reinforced plastics, with glass, carbon or aramid fibers in a thermosetting or thermoplastic matrix. 6. Verbund-Vlies nach Anspruch 5, dadurch gekennzeichnet, daß die Verstärkungselemente mit einem Mantel aus thermoplastischen Harz umgeben sind, der bei der Herstellung der Kernkonstruktion durch lokales Verschmelzen eine feste Verbindung zwischen den Verstärkungselementen an den Kreuzungspunkten herstellt.6. Composite fleece according to claim 5, characterized in that the reinforcing elements are surrounded by a sheath made of thermoplastic resin, which, during the manufacture of the core construction, creates a firm connection between the reinforcing elements at the crossing points by local fusion. 7. Verbund-Vlies nach Anspruch 2, dadurch gekennzeichnet, daß in der Kern-Konstruktion die Verstärkungselemente an den Kreuzungspunkten durch einen Klebstoff, z. B. Epoxy-Harz, verbunden sind.7. Composite fleece according to claim 2, characterized in that in the core construction the reinforcing elements are connected at the crossing points by an adhesive, e.g. epoxy resin. 8. Verbund-Vlies nach Anspruch 2, dadurch gekennzeichnet, daß in der Kern-Konstruktion die Verstärkungselemente an den Kreuzungspunkten durch eine formschlüssige Auslegung der Querschnitte, z. B. durch Einkerbung, dergestalt aufeinanderliegen, daß sich eine Fixierung der verstärkungselemente untereinander ergibt.8. Composite fleece according to claim 2, characterized in that in the core construction the reinforcing elements lie on one another at the intersection points by a form-fitting design of the cross sections, e.g. by notching, in such a way that the reinforcing elements are fixed to one another. 9. Verbund-Vlies nach Anspruch 2, dadurch gekennzeichnet, daß eine Fixierung der Verstärkungselemente untereinander an den Kreuzungspunkten durch eine Verdrahtung oder Umwickelung um beide Elemente herum mittels Draht aus einem geeigneten Material, z. B. Metall oder Kunststoff, erfolgt .9. Composite fleece according to claim 2, characterized in that the reinforcing elements are fixed to one another at the crossing points by wiring or wrapping around both elements using wire made of a suitable material, e.g. metal or plastic.
DE9315083U 1993-10-06 1993-10-06 Composite fleece with needled rigid reinforcement elements Expired - Lifetime DE9315083U1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027095A1 (en) * 1994-03-30 1995-10-12 Deutsche Rockwool Mineralwoll-Gmbh Method of binding wire netting to a mineral wool mat
DE19505969A1 (en) * 1995-02-21 1996-08-22 Gruenzweig & Hartmann Mineral wool insulation board and method of manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027095A1 (en) * 1994-03-30 1995-10-12 Deutsche Rockwool Mineralwoll-Gmbh Method of binding wire netting to a mineral wool mat
DE19505969A1 (en) * 1995-02-21 1996-08-22 Gruenzweig & Hartmann Mineral wool insulation board and method of manufacturing the same

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