WO2001043950A1 - Materiau composite renforce par une structure metallique helicoidale - Google Patents

Materiau composite renforce par une structure metallique helicoidale Download PDF

Info

Publication number
WO2001043950A1
WO2001043950A1 PCT/EP2000/012782 EP0012782W WO0143950A1 WO 2001043950 A1 WO2001043950 A1 WO 2001043950A1 EP 0012782 W EP0012782 W EP 0012782W WO 0143950 A1 WO0143950 A1 WO 0143950A1
Authority
WO
WIPO (PCT)
Prior art keywords
composite material
metal structure
springs
metal
polymer
Prior art date
Application number
PCT/EP2000/012782
Other languages
English (en)
Inventor
Ludo Adriaensen
Gilbert Van Loo
Original Assignee
N.V. Bekaert S.A.
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 N.V. Bekaert S.A. filed Critical N.V. Bekaert S.A.
Priority to EP00993392A priority Critical patent/EP1268166A1/fr
Priority to AU28424/01A priority patent/AU2842401A/en
Publication of WO2001043950A1 publication Critical patent/WO2001043950A1/fr

Links

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
    • 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
    • B29C70/26—Non-fibrous reinforcements only
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0809—Fabrics
    • 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
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/007—Narrow strips, e.g. ribbons, tapes, bands
    • 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
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/008—Wide strips, e.g. films, webs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/184—Nonwoven scrim
    • Y10T442/188—Metal or metal-coated fiber-containing scrim

Definitions

  • the present invention relates to a composite material which comprises a polymer as matrix and a metal structure as a reinforcing element
  • the invention also relates to the use of such a composite material as reinforced canvass, sail cloth, cargo cover or tarpaulin
  • WO-A-98/55682 solves the problem of flexibility by replacing the single steel wire by two or more steel cords in parallel adjacent to each other
  • the steel cords have the advantage of providing sufficient flexibility while still providing the required strength
  • the increased flexibility is obtained by using relatively thin filaments in the steel cords
  • these thin filaments often lack the required resistance against the action of a pair of scissors
  • a composite material which comprises a polymer as matrix and a metal structure as a reinforcing element.
  • the metal structure comprises two metal springs.
  • the springs are wound in opposite directions.
  • the springs have coil parts which alternate with each other along the length of the metal structure.
  • the springs are rolled together so as to form a flat shape and a coherent structure. During this process the individual wires are more or less flattened, taking into account the tensile strength of the wires and the pressure exercised on the rolls.
  • the metal structure is flexible in all directions.
  • each cross-section has at least three, but conveniently four separate cross-sections of metal wires.
  • the metal structure has a great elastic springiness. It allows to a large degree folding and bending without plastic deformation.
  • the metal structure is thin and flat in one direction, so that a minimal amount of polymer is needed to cover it. This reduces the weight of the composite material.
  • a metal structure as described hereabove, is known as such in the art as corset bones for orthopedical applications.
  • the polymer is preferably a thermoplastic material such as polyvinylchloride (PVC) which can be extruded around the metal structure.
  • PVC polyvinylchloride
  • thermoplastic elastomers refers to blends of polyolefins and rubbers in which blends the rubber phase is not cured, blends of polyolefins and rubbers in which blends the rubber phase has been partially or fully cured by a vulcanization process to form thermoplastic vulcanizates, or unvulcanized block-copolymers or blends thereof.
  • the composite material can be in the form of a strip, a sheet or a fabric with a warp and a weft, where at least one of the warp or the weft are a strip.
  • the composite material can be used in applications where an increased resistance against vandalism and robbery is desired. Examples are the reinforcement of canvasses, sail cloths, tarpaulins, tent material, cargo covers.
  • FIGURE 1 illustrates a metal structure used to reinforce a composite material according to the invention
  • FIGURE 2 illustrates a cross-section of a composite material in the form of a strip
  • - FIGURE 3 illustrates a cross-section of a composite material in the form of a sheet
  • FIGURE 4 illustrates a composite material in the form of a fabric. Description of the preferred embodiments of the invention.
  • FIGURE 1 illustrates a metal structure 10 used to reinforce a composite material according to the invention.
  • the metal structure 10 comprises two metal springs 12, 14 which are wound in opposite directions.
  • the springs 12, 14 are so wound in each other that a coil part of spring 12 alternates with a coil part of spring 14, and vice versa.
  • the metal structure 10 is rolled so that it forms a coherent and flat structure.
  • the rolling is so that the cross-sections of the individual springs 12 and 14 are also flattened. This flattening increases the resistance against the action of a pair of scissors.
  • the metal springs 12, 14 can be made of hard drawn steel wires with following plain carbon composition : a carbon content between 0.06 % and 1.10 %, a silicon content between 0.10 % and 0.40 % and a manganese content between 0.20 % and 1.20 %. Addition of micro-alloying such as chromium, vanadium, boron ... is not excluded. The use of stainless steel wires is neither excluded.
  • Typical values of the diameter d of the steel wires are 0.40 mm and 0.50 mm (in case of a non-round cross-section, the diameter d equals to the diameter of a round cross-section with the same cross-sectional surface). Generally the wire diameter d ranges from 0.25 mm to 0.80 mm.
  • a typical value of the coil diameter D is 4.0 mm. Generally the coil diameter D ranges from 3.0 mm to 6.0 mm after rolling.
  • the width W of the total metal structure 10 may vary between about 4.0 mm and 11.0 mm after rolling.
  • the pitch p between two coils of the same spring wire varies between the value of a single wire diameter and several times the wire diameter.
  • the steel wire may be coated with a metallic coating such as zinc or a zinc alloy (e.g. a zinc aluminum alloy with 2 % to 10 % Al and 0.1 % to
  • rare earth elements such as La and/or Ce
  • the individual steel wires or the steel structure as a whole may also be provided with a primer which increases the adhesion to the polymer matrix.
  • a first group of primers that can be used are thermosetting materials. Therefore binding agents are dissolved in an organic solvent or are dispersed with a limited amount of a dispersing agent in water to form an emulsion or a suspension. Suitable binding agents are based on acrylate, alkyd/melamine, epoxy or phenol/epoxy resins. Other binding agents giving a good adhesion to the metal and to the PVC compounds can also be used. Additives such as anticorrosion pigments, wetting agents and/or stabilizing agents can be added.
  • the primer composition is applied to the wires or to the metal structure by immersing the wires or the structure into a solution, an emulsion or a suspension of the primer material. The primer composition can also be applied by spraying.
  • the thickness of the wet primer layer can be calibrated by passing the wire and the primer through the calibrated opening of a die.
  • the thickness of the primer layer can also be calibrated by felt wiping or by air wiping in a controlled air stream.
  • the thickness of the primer layer may be influenced by further diluting the primer composition.
  • the wire or the metal structure can be heated.
  • the thickness of the primer layer must be low.
  • the thickness of the dry primer layer is preferably less than 10 ⁇ m, more preferably less than 5 ⁇ m, for instance less than 1 ⁇ m.
  • Radiation curable resins such as ultra violet, electron beam or infra red curable resins are also suitable as primer.
  • a second group of primer layers that can be applied are hot melts, for example ethylene copolymers such as EVA (ethyl vinyl acetate), polyamides or polyesters.
  • hot melts for example ethylene copolymers such as EVA (ethyl vinyl acetate), polyamides or polyesters.
  • EVA ethyl vinyl acetate
  • polyamides polyamides
  • polyesters polyesters.
  • EVA ethyl vinyl acetate
  • This hot melt can be applied with a variety of different equipment. Very suitable is the melt pot.
  • Also application by extrusion is possible under certain conditions. A method for the application by extrusion is described in the patent specification BE 1006346.
  • primer layers with a thickness of less than 25 ⁇ m, for instance less than 5 ⁇ m are obtained.
  • a third group are silane-compounds. These are bifunctional molecules : one functional group is responsible for the binding with the metal(oxides), the other functional group reacts with the polymer. More details about these silane compound can be found in the PCT application with the application number WO-A-99/20682 (PCT/BE98/0015). Usually the silane compounds are diluted in alcohols, although they can be diluted in other solvents or in water as well. With this type of compounds very thin primer layers with a thickness of 20 nm or even less can be achieved.
  • FIGURE 2 shows a cross-section of a composite strip 16.
  • Strip 16 has a PVC matrix 17 which is extruded around a metal structure 10 which has three to four cross-sections of spring wires 12, 14.
  • a typical width of the strip is 6.0 mm and a typical thickness 1.0 mm. Generally, both the width and the thickness depend upon the resp. width and thickness of the metal structure 10. The width may range from 3.0 mm to 25.0 mm and the thickness may range from 0.50 mm to 3.0 mm.
  • FIGURE 3 illustrates a composite sheet 18 at least one direction of which is reinforced by means of a metals structure 10.
  • FIGURE 4 illustrates a fabric 20 where either the warp elements 16' or the weft elements 16" or both are strips reinforced by means of a metal structure 10. Strips 16' are welded to strips 16" so that the PVC material melts and functions as an adhesive between warp and weft.
  • the fabric 20 forms various meshes.
  • the width M of the mesh ranges from 5.0 cm to 20.0 cm. Typical values are 15.0 cm x 15.0 cm and 10.0 cm x 7.5 cm.
  • a fabric 20 may be used as reinforcement for canvasses by bonding or adhering the fabric at the interior side of the canvass so that the external side is still available for publicity or brand names.
  • Canvasses for trucks may be divided into two main categories : canvasses of the curtain type and canvasses of the roll up type.
  • Canvasses of the curtain type are slidingly suspended on horizontal rails and can be horizontally slid to one side to open the canvass.
  • Canvasses of the curtain type require flexibility in the horizontal direction.
  • Canvasses of the roll up type can be rolled up vertically to open the canvass.
  • Canvasses of the roll up type require a flexibility in the vertical direction.
  • Fabrics 20 according to the invention may be realized so that for canvasses of the roll-up type, the flexible metal structure 10 reinforces at least the vertical strips 16' and that for canvasses of the curtain type, the flexible metal structure 10 reinforces at least the horizontal strips 16".

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un matériau composite (16) comportant un polymère (17) en tant que matrice et une structure métallique (10) en tant qu'élément de renforcement. Ledit matériau composite est caractérisé en ce que ladite structure métallique (10) comporte deux ressorts métalliques (12, 14) enroulés dans le sens opposé, lesdits ressorts ayant des parties enroulées alternées mutuellement le long de la structure métallique, et lesdits ressorts étant roulés de manière à former une forme plate.
PCT/EP2000/012782 1999-12-15 2000-12-13 Materiau composite renforce par une structure metallique helicoidale WO2001043950A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00993392A EP1268166A1 (fr) 1999-12-15 2000-12-13 Materiau composite renforce par une structure metallique helicoidale
AU28424/01A AU2842401A (en) 1999-12-15 2000-12-13 Composite material reinforced by springlike metal structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP99204341.4 1999-12-15
EP99204341 1999-12-15

Publications (1)

Publication Number Publication Date
WO2001043950A1 true WO2001043950A1 (fr) 2001-06-21

Family

ID=8241011

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/012782 WO2001043950A1 (fr) 1999-12-15 2000-12-13 Materiau composite renforce par une structure metallique helicoidale

Country Status (4)

Country Link
US (1) US20020193023A1 (fr)
EP (1) EP1268166A1 (fr)
AU (1) AU2842401A (fr)
WO (1) WO2001043950A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2572059B1 (fr) * 2010-05-18 2015-08-19 NV Bekaert SA Composites renforcés en pvc

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE455898T1 (de) * 2005-07-20 2010-02-15 Bekaert Sa Nv Rolle aus vorgeformten stahlkordverstärktem band
FR2985935B1 (fr) * 2012-01-19 2014-02-21 Choletaise De Fabrication Soc Procede de mise en forme tridimensionnelle d'un objet a partir d'un cordon souple, cordon pour la realisation du procede et objet ainsi realise
ITRA20130020A1 (it) * 2013-07-19 2015-01-20 Grassi Enrico Laminato

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997026146A1 (fr) * 1996-01-19 1997-07-24 Fair International Perfectionnement aux parois souples pour carrosseries de vehicules notamment
WO1998055682A1 (fr) * 1997-06-06 1998-12-10 N.V. Bekaert S.A. Renfort de grosse toile

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2127418A5 (fr) * 1971-03-05 1972-10-13 Europ Propulsion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997026146A1 (fr) * 1996-01-19 1997-07-24 Fair International Perfectionnement aux parois souples pour carrosseries de vehicules notamment
WO1998055682A1 (fr) * 1997-06-06 1998-12-10 N.V. Bekaert S.A. Renfort de grosse toile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2572059B1 (fr) * 2010-05-18 2015-08-19 NV Bekaert SA Composites renforcés en pvc

Also Published As

Publication number Publication date
AU2842401A (en) 2001-06-25
EP1268166A1 (fr) 2003-01-02
US20020193023A1 (en) 2002-12-19

Similar Documents

Publication Publication Date Title
DE602004006360T2 (de) Membran und Verfahren zu deren Herstellung
DE3519860C2 (fr)
US5201497A (en) End fabric woven fence
US4442162A (en) Chemical and biological resistant material and method of fabricating same
DE3514295A1 (de) Verstaerkungs-klebebahn
EP0986668B1 (fr) Renfort de grosse toile
WO2008128579A1 (fr) Palier lisse ne nécessitant pas d'entretien
AT393996B (de) Plastisch verformbares abdeckmaterial
EP2001694B1 (fr) Materiau de renfort et systeme de stabilisation de toit qui permet d'eviter toute deformation de vehicules de chargement, remorques et/ou camions
DE19537702A1 (de) Gewebe und Gelege mit einstellbarer Gas- und/oder Flüssigkeitsdichtigkeit enthaltend Hybridgarne, Verfahren zu deren Weiterverarbeitung, textile Flächengebilde mit vorbestimmter Gas- und/durch Flüssigkeitsdurchlässigkeit und deren Verwendung
US20150224910A1 (en) Tarpaulin and production process thereof
US20020193023A1 (en) Composite material reinforced by springlike metal structure
US6761954B2 (en) Reinforced flexible laminate sealing strip and method of manufacturing same
EP1161591B1 (fr) Toiles renforcees a l'aide d'elements metalliques
GB2048971A (en) Plastic Reinforced Mesh
GB2335162A (en) A composite material suitable for use as,or as part of a closure for a vehicle body
DE19918698A1 (de) Verfahren zur Herstellung eines Metallfolien-/Gewebeverbundes insbesondere für Rolladenpanzer
EP1663615B1 (fr) Procede de production d'une bande pelliculaire comportant au moins un bourrelet et son utilisation
DE3233259A1 (de) Plastfolienverstaerkte textile flaechengebilde fuer hochbelastbare verbundwerkstoffe
JP6986282B2 (ja) 引裂強度に優れた産業資材用帆布
DE10150453A1 (de) Klebeband
EP1183152A1 (fr) Tissu composite et son utilisation
DD264402A1 (de) Verfahren zur herstellung eines verbundmaterials
EP3915657A1 (fr) Peau pour ski
DE3501474A1 (de) Flexibler bahnenwerkstoff

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2000993392

Country of ref document: EP

Ref document number: 10148923

Country of ref document: US

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 2000993392

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 2000993392

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP