WO2020247493A1 - Tissu magnétique pour applications de moulage - Google Patents

Tissu magnétique pour applications de moulage Download PDF

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Publication number
WO2020247493A1
WO2020247493A1 PCT/US2020/035917 US2020035917W WO2020247493A1 WO 2020247493 A1 WO2020247493 A1 WO 2020247493A1 US 2020035917 W US2020035917 W US 2020035917W WO 2020247493 A1 WO2020247493 A1 WO 2020247493A1
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WO
WIPO (PCT)
Prior art keywords
scrim
magnetic
yarns
coating
elements
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.)
Ceased
Application number
PCT/US2020/035917
Other languages
English (en)
Inventor
Sudhanshu SRIVASTAVA
Warren W. Gerhardt
Emily W. Michaels
Jeffrey A. Stafford
Kurt NEUVILLE
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.)
Milliken and Co
Original Assignee
Milliken and Co
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 Milliken and Co filed Critical Milliken and Co
Priority to EP20749985.6A priority Critical patent/EP3980592B1/fr
Publication of WO2020247493A1 publication Critical patent/WO2020247493A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/507—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads magnetic
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D25/00—Woven fabrics not otherwise provided for
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D9/00—Open-work fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/10—Open-work fabrics
    • D04B21/12—Open-work fabrics characterised by thread material
    • 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
    • D04H1/58—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/01—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy water; with hydrides of metals or complexes thereof; with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines, or diarsines or complexes thereof
    • D06M11/05—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy water; with hydrides of metals or complexes thereof; with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines, or diarsines or complexes thereof with water, e.g. steam; with heavy water
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/49—Oxides or hydroxides of elements of Groups 8, 9,10 or 18 of the Periodic Table; Ferrates; Cobaltates; Nickelates; Ruthenates; Osmates; Rhodates; Iridates; Palladates; Platinates
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/08—Processes in which the treating agent is applied in powder or granular form
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0006—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using woven fabrics
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0068—Polymeric granules, particles or powder, e.g. core-shell particles, microcapsules
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/06—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32—Polyesters
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/02—Synthetic macromolecular fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2203/00—Macromolecular materials of the coating layers
    • D06N2203/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N2203/045—Vinyl (co)polymers
    • D06N2203/048—Polyvinylchloride (co)polymers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2205/00—Condition, form or state of the materials
    • D06N2205/02—Dispersion
    • D06N2205/023—Emulsion, aqueous dispersion, latex
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/04—Properties of the materials having electrical or magnetic properties
    • D06N2209/045—Magnetic, paramagnetic
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/01—Surface features
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0241—Fabric incorporating additional compounds enhancing mechanical properties
    • D10B2403/02412—Fabric incorporating additional compounds enhancing mechanical properties including several arrays of unbent yarn, e.g. multiaxial fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0243—Fabric incorporating additional compounds enhancing functional properties
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/02—Reinforcing materials; Prepregs
    • 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.]
    • Y10T442/102—Woven scrim
    • Y10T442/109—Metal or metal-coated fiber-containing scrim

Definitions

  • the present invention generally relates to creating magnetic scrims for easier processing for molding applications.
  • foams such as polyurethanes are combined with other textile layers such as scrims during the molding process.
  • the scrims can give the polyurethane additional strength and other characteristics such as fire resistance.
  • the invention relates to a magnetic scrim containing a scrim which contains a plurality of yarns and a magnetic coating covering at least a portion of the yarns of the scrim.
  • the magnetic coating which contains magnetic elements dispersed in a binder, where the magnetic coating is at least about 40% by weight magnetic elements, and where the magnetic coating has an areal density of at least twice the areal density of the scrim.
  • Figure 1 illustrates one embodiment of a magnetic scrim.
  • Figure 2 is a photograph of one embodiment of the scrim (before being coated with the magnetic coating).
  • the magnetic scrim 10 contains a scrim 100 having a first side 100a and a second side 100b.
  • the scrim 100 contains a plurality of yarns.
  • the magnetic scrim 10 also contains a magnetic coating 120 that covers at least a portion of the yarns of the scrim 100.
  • This magnetic scrim 10 would be placed in a mold with at least one magnet to hold the scrim in place while the mold is prepared and polyurethane (or other moldable material) is introduced and then cured in the mold.
  • the term "scrim” shall mean a fabric having an open construction used as a base fabric or a reinforcing fabric, which may be
  • the scrim contains a plurality of yarns and the yarns may be adhesively or thermally bonded or may be unbonded to each other.
  • the scrim 100 may be any suitable scrim including any suitable light weight woven, knit, or nonwoven fabric.
  • the scrim layer is a weft inserted warp knit scrim.
  • a weft inserted warp knit scrim 100 contains a plurality of warp yarns 110, weft yarns 1 11 , and stitching yarns 113.
  • the stitching yarns 1 13 may have any suitable stitching pattern, including tricot stitches or pillar stitches, or other stitches.
  • the weft yarns 1 1 1 can be laid in every course (every row of stitches from the stitching yarn), every second course (every second row of stitches from the stitching yarn), every third course (every third row of stitches from the stitching yarn) or more. How open or closed (how close together the yarns are within the scrim 100, is determined by the types and sizes of the yarns and the desired properties of the scrim 100 and magnetic scrim 10.
  • One suitable scrim, not coated with the magnetic coating yet, is shown in Figure 2.
  • the scrim 100 comprises a plurality of yarns in a warp direction and a plurality of yarns in a weft direction defined to be approximately perpendicular to the warp direction.
  • at least a portion of the plurality of yarns in a weft direction are polyester texturized polyester yarns.
  • the yarns of the scrim can be any suitable yarns, include any suitable materials, structure, and thickness.
  • the yarns making up the strip-shaped textile forming the strip-shaped substrate 200 may be any suitable yarn.
  • "Yarn”, in this application, as used herein includes a monofilament elongated body, a multifilament elongated body, ribbon, strip, fiber, tape, and the like.
  • the term yarn includes a plurality of any one or combination of the above.
  • the yarns may be of any suitable form such as spun staple yarn, monofilament,
  • the yarns are monofilament. In another embodiment, the yarns are multifilament. In another embodiment, the yarns contain mono and multifilaments. In one preferred embodiment, at least a portion of the yarns are texturized as this has been found to be beneficial in the coating process. In one embodiment, the weft yarns of the weft inserted warp yarn knit scrim are texturized.
  • Some suitable materials for the yarns include polyamide, aramid (including meta and para forms), rayon, PVA (polyvinyl alcohol), polyester, polyolefin, polyvinyl, nylon (including nylon 6, nylon 6,6, and nylon 4,6),
  • PEN polyethylene naphthalate
  • the yarns comprise polyester yarns.
  • the yarns of the magnetic scrim 10 consist essentially of polyester yarns (defined to be mean at least 98% of the yarns are polyester yarns).
  • the magnetic scrim 10 contains a magnetic coating 120.
  • the magnetic coating 120 preferably covers at least a portion of yarns of the scrim 100. More preferably, the magnetic coating 120 covers essentially all of the surface area of the yarns in the scrim (defined as covering at least 95% of the surface area of the yarns).
  • the magnetic coating 120 contains magnetic elements and a binder.
  • the magnetic elements 120 have a persistent magnetic field.
  • the term“persistent magnetic field” refers to a magnetic field that persists for an extended period of time, such as the magnetic field of a traditional permanent magnet.
  • the magnetic elements and magnetically responsive elements are magnetically attracted when in close proximity to each other. This magnetic attraction produces a force that draws and reversibly holds together the magnetic scrim 10 and the mold.
  • the magnetic elements can be any suitable material that has a persistent magnetic field.
  • the magnetic elements can be permanent magnets made from materials such as iron, nickel, neodymium, cobalt, alloys of such metals (e.g., BaFe3C>4, SrFe3C>4, AINiCo) and alloys of rare earth metals, such as NdFeB and CoSm.
  • materials such as iron, nickel, neodymium, cobalt, alloys of such metals (e.g., BaFe3C>4, SrFe3C>4, AINiCo) and alloys of rare earth metals, such as NdFeB and CoSm.
  • the magnetic elements can have any suitable magnetic flux density.
  • the magnetic flux density of the magnetic elements is one factor that will determine the strength of the attraction between the magnetic elements and the magnetically receptive elements. Therefore, the desired magnetic flux density of the magnetic elements will depend, at least in part, on the desired attractive force between the elements (and substrates attached to those elements).
  • the magnetic elements exhibit a magnetic flux density of about 50 gauss (G) or more (about 5 millitesla (mT) or more), about 100 G or more (about 10 mT or more), about 150 G or more (about 15 mT or more), or about 200 G or more (about 20 mT or more).
  • the magnetic coating preferably comprises a binder and magnetic elements.
  • the binder can be any suitable binder that will adhere to the scrim and bind together the magnetic elements.
  • Suitable binders include, but are not limited to, urethane binders, acrylic binders, silicone binders, thermoplastic binders, thermoset binders, cements, rubber, and geopolymers.
  • the binder preferably remains flexible after curing.
  • the binder preferably is selected from the group consisting of urethane binders, acrylic binders, silicone binders, and mixtures thereof.
  • the magnetic elements can have any suitable particle size.
  • the magnetic elements have a particle size of about 100 microns or less. More preferably, the magnetic elements have a particle size of about 50 microns or less.
  • the particle size of the material can affect the magnetic characteristics exhibited by the magnetic elements.
  • the magnetic elements can be present in the magnetic coating in any suitable amount.
  • the amount of magnetic elements present in the magnetic coating may depend upon several factors, such as the desired strength of the magnetic response and the type of magnetic elements used in the magnetic coating.
  • the magnetic elements (which may be one type of element or mixtures of multiple types of elements) generally account for an appreciable percentage of the overall magnetic coating.
  • the magnetic elements are present in the magnetic coating in an amount of about 20 wt.% or more, about 30 wt.% or more, about 40 wt.% or more, about 50 wt.% or more, or about 60 wt.% or more of the coating.
  • the magnetic elements are present in the magnetic coating in an amount of about 90 wt.% or less. In a more preferred embodiment, the magnetic elements is present in the magnetic coating in an amount of about 20 wt.% to about 90 wt.% (e.g., about 30 wt.% to about 90 wt.%, about 40 wt.% to about 90 wt.%, about 50 wt.% to about 90 wt.%, or about 60 wt.% to about 90 wt.%), about 30 wt.% to about 80 wt.%, about 30 wt.% to about 70 wt.%, or about 40 wt.% to about 60 wt.% of the coating. In another embodiment, the magnetic elements are present in the magnetic coating in an amount of at least about 40 wt. %, more preferably at least about 60 wt. %.
  • the magnetic coating can be applied to the scrim in any suitable amount.
  • the amount of coating applied to the substrate will depend upon several factors, such as the magnetic strength of the magnetic elements, the amount of magnetic elements in the coating, and the desired magnetic flux density to be exhibited by the coating 120. Due to the amount of coating 120 applied to the scrim 100 and the high content of magnetic elements in the coating, the coating has a high areal density (weight per area). In one embodiment, the magnetic coating has an areal weight of at least about twice that of the areal density of the scrim. In another embodiment, the magnetic coating has an areal weight of at least about 2.5 times that of the areal density of the untreated scrim. In one embodiment, the magnetic coating has an areal weight of at least about 40 g/m 2 .
  • the magnetic coating has an areal weight of between about 40 and 1 10 g/m 2 .
  • the magnetic coating 120 is applied to the scrim 100 in any suitable manner.
  • the coating 120 is applied from an aqueous solution (or mixture or emulsion).
  • An aqueous based system is preferred for environmental reasons.
  • the coating is solvent based. In one
  • the coating 120 is coated by gravure coating, knife coating, curtain coating, printing, and transfer coating.
  • the pattern could be in any suitable pattern.
  • the pattern may be continuous or discontinuous, regular and repeating or random. “Continuous” in this application means that from one edge of the textile to the other edge there is a path that contains the pattern and that at least some of the pattern areas are connected. Examples of continuous patterns include straight lines and a grid.
  • discontinuous in this application means that the areas of the pattern are discontinuous and not touching one another. In a discontinuous pattern, there is no path from one edge of the fabric to the other that contains the pattern. Examples of discontinuous patterns include dots. Regular or repeating patterns mean that the pattern has a repeating structure to it. The pattern may also be a random pattern where there is no repeat to the pattern. In a random pattern, it is preferred that the random pattern is also discontinuous, not
  • the pattern may take any patterned form including but not limited to indicia, geometric shapes or patterns, lines (straight and curved), grids, and text.
  • the scrim 100 may be coated with additional layers before or after the magnetic coating 120 is applied.
  • the scrim 100 is coated with PVC (polyvinyl chloride) before being coated with the magnetic coating 120.
  • PVC polyvinyl chloride
  • the PVC pre-coating step may provide stability to the loose knit, giving it a structure that may be easily handled without creating any distortion in the arrangement of the warp and weft yarns.
  • the PVC coating may also keep the warp yarns tightly bundled and the textured weft yarns fixed in a bloomed, high surface-area form.
  • the interior surface of the mold contains iron, nickel, cobalt, an alloys of certain rare earth metals, or mixtures thereof.
  • the attraction between the magnetic scrim and mold is strong enough to hold the scrim in place until other materials are introduced into the mold.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un canevas magnétique comprenant un canevas qui contient une pluralité de fils et un revêtement magnétique recouvrant au moins une partie des fils du canevas. Le revêtement magnétique contient des éléments magnétiques et un liant, le revêtement magnétique étant constitué d'au moins environ 40 % en poids d'éléments magnétiques, et le revêtement magnétique ayant une densité surfacique d'au moins deux fois la densité surfacique du canevas.
PCT/US2020/035917 2019-06-04 2020-06-03 Tissu magnétique pour applications de moulage Ceased WO2020247493A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20749985.6A EP3980592B1 (fr) 2019-06-04 2020-06-03 Tissu magnétique pour applications de moulage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962857078P 2019-06-04 2019-06-04
US62/857,078 2019-06-04

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WO2020247493A1 true WO2020247493A1 (fr) 2020-12-10

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Country Link
US (1) US20200385920A1 (fr)
EP (1) EP3980592B1 (fr)
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1123795A (en) * 1965-02-04 1968-08-14 Vauxhall Motors Ltd Vehicle roof liners
JPS61245372A (ja) * 1986-04-16 1986-10-31 三菱樹脂株式会社 導電性メツシユ織物
EP1413660A1 (fr) * 2002-10-22 2004-04-28 Rolf Schumacher Tricot
WO2013148696A1 (fr) * 2012-03-26 2013-10-03 Saint-Gobain Adfors Canada, Ltd. Canevas tramés à angle décalé

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3444025A (en) * 1965-12-21 1969-05-13 Union Carbide Corp Method of bonding non-woven scrim
EP1469108A3 (fr) * 2003-04-17 2005-03-30 GKD Gebr. Kufferath AG Tissu avec des fils magnétiques actifs et ensemble composé d'une bande supérieure avec un tel tissu et d'une bande inférieure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1123795A (en) * 1965-02-04 1968-08-14 Vauxhall Motors Ltd Vehicle roof liners
JPS61245372A (ja) * 1986-04-16 1986-10-31 三菱樹脂株式会社 導電性メツシユ織物
EP1413660A1 (fr) * 2002-10-22 2004-04-28 Rolf Schumacher Tricot
WO2013148696A1 (fr) * 2012-03-26 2013-10-03 Saint-Gobain Adfors Canada, Ltd. Canevas tramés à angle décalé

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EP3980592A1 (fr) 2022-04-13
EP3980592B1 (fr) 2022-10-26

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