US20200385920A1 - Magnetic fabric for molding applications - Google Patents
Magnetic fabric for molding applications Download PDFInfo
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- US20200385920A1 US20200385920A1 US16/890,360 US202016890360A US2020385920A1 US 20200385920 A1 US20200385920 A1 US 20200385920A1 US 202016890360 A US202016890360 A US 202016890360A US 2020385920 A1 US2020385920 A1 US 2020385920A1
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- scrim
- magnetic
- yarns
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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
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
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- 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
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- 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
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- 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
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D25/00—Woven fabrics not otherwise provided for
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D9/00—Open-work fabrics
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- 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
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- 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
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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
- D06M11/01—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
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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
- D06M11/32—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 System; Ferrates; Cobaltates; Nickelates; Ruthenates; Osmates; Rhodates; Iridates; Palladates; Platinates
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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
- 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
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- 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
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- 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
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- 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
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- 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
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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
- 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
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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
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
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- 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
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- 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
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- 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
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- 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
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- 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]
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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.
- FIG. 1 illustrates one embodiment of a magnetic scrim.
- FIG. 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 100 a and a second side 100 b .
- 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 manufactured as laid scrim, a woven scrim, a knit scrim, a weft-inserted warp knit scrim, a multi-axial warp knit scrim, a stitch-bonded scrim, or a cross-plied scrim.
- 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 111 , and stitching yarns 113 .
- the stitching yarns 113 may have any suitable stitching pattern, including tricot stitches or pillar stitches, or other stitches.
- the weft yarns 111 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.
- 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, or multifilament, single component, bi-component, or multi-component, and have any suitable cross-section shape such as circular, multi-lobal, square or rectangular (tape), and oval.
- 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), polyethylene naphthalate (PEN), cotton, steel, carbon, fiberglass, steel, polyacrylic, polytrimethylene terephthalate (PTT), polycyclohexane dimethylene terephthalate (PCT), polybutylene terephthalate (PBT), PET modified with polyethylene glycol (PEG), polylactic acid (PLA), polytrimethylene terephthalate, nylons (including nylon 6 and nylon 6,6); regenerated cellulosics (such as rayon or Tencel); elastomeric materials such as spandex; high-performance fibers such as the polyaramids, and polyimides natural fibers such as cotton, linen, ramie, and hemp, proteinaceous materials such as silk, wool, and other animal hairs such as angora, alpaca
- 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., BaFe 3 O 4 , SrFe 3 O 4 , AlNiCo) and alloys of rare earth metals, such as NdFeB and CoSm.
- materials such as iron, nickel, neodymium, cobalt, alloys of such metals (e.g., BaFe 3 O 4 , SrFe 3 O 4 , AlNiCo) 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 . In another embodiment, the magnetic coating has an areal weight of between about 40 and 110 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.
- 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 continuous.
- 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 mold is being magnetizable so that the magnetic scrim will be attracted and attach to the mold.
- 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.
Abstract
Description
- This application claims priority to co-pending U.S. Provisional Patent Application 62/857,078, filed on Jun. 4, 2019, which is herein incorporated by reference in its entirety.
- The present invention generally relates to creating magnetic scrims for easier processing for molding applications.
- In some 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. There is a need for a scrim that is more easily inserted and positioned within the mold to reduce incorrect molding location and operator time to position the scrim.
- 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.
-
FIG. 1 illustrates one embodiment of a magnetic scrim. -
FIG. 2 is a photograph of one embodiment of the scrim (before being coated with the magnetic coating). - Referring now to
FIG. 1 , there is shown one embodiment of themagnetic scrim 10. Themagnetic scrim 10 contains ascrim 100 having afirst side 100 a and asecond side 100 b. Thescrim 100 contains a plurality of yarns. Themagnetic scrim 10 also contains amagnetic coating 120 that covers at least a portion of the yarns of thescrim 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. - As used herein, the term “scrim” shall mean a fabric having an open construction used as a base fabric or a reinforcing fabric, which may be manufactured as laid scrim, a woven scrim, a knit scrim, a weft-inserted warp knit scrim, a multi-axial warp knit scrim, a stitch-bonded scrim, or a cross-plied scrim. 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. Preferably, the scrim layer is a weft inserted warp knit scrim. A weft insertedwarp knit scrim 100 contains a plurality ofwarp yarns 110,weft yarns 111, andstitching yarns 113. Thestitching yarns 113 may have any suitable stitching pattern, including tricot stitches or pillar stitches, or other stitches. Theweft yarns 111 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 thescrim 100, is determined by the types and sizes of the yarns and the desired properties of thescrim 100 andmagnetic scrim 10. One suitable scrim, not coated with the magnetic coating yet, is shown inFIG. 2 . - In one embodiment 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. In another embodiment, 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, or multifilament, single component, bi-component, or multi-component, and have any suitable cross-section shape such as circular, multi-lobal, square or rectangular (tape), and oval. In one embodiment, 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), polyethylene naphthalate (PEN), cotton, steel, carbon, fiberglass, steel, polyacrylic, polytrimethylene terephthalate (PTT), polycyclohexane dimethylene terephthalate (PCT), polybutylene terephthalate (PBT), PET modified with polyethylene glycol (PEG), polylactic acid (PLA), polytrimethylene terephthalate, nylons (including nylon 6 and nylon 6,6); regenerated cellulosics (such as rayon or Tencel); elastomeric materials such as spandex; high-performance fibers such as the polyaramids, and polyimides natural fibers such as cotton, linen, ramie, and hemp, proteinaceous materials such as silk, wool, and other animal hairs such as angora, alpaca, and vicuna, fiber reinforced polymers, thermosetting polymers, blends thereof, and mixtures thereof. In a preferred embodiment, the yarns comprise polyester yarns. In another embodiment, 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). - Referring back to
FIG. 1 , themagnetic scrim 10 contains amagnetic coating 120. Themagnetic coating 120 preferably covers at least a portion of yarns of thescrim 100. More preferably, themagnetic 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). Themagnetic coating 120 contains magnetic elements and a binder. - The
magnetic elements 120 have a persistent magnetic field. As utilized herein, 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. As is explained in detail below, the magnetic elements and magnetically responsive elements (such as some metals forming the inner walls of the mold) are magnetically attracted when in close proximity to each other. This magnetic attraction produces a force that draws and reversibly holds together themagnetic scrim 10 and the mold. The magnetic elements can be any suitable material that has a persistent magnetic field. For example, the magnetic elements can be permanent magnets made from materials such as iron, nickel, neodymium, cobalt, alloys of such metals (e.g., BaFe3O4, SrFe3O4, AlNiCo) 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). Preferably, 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).
- In a preferred embodiment, 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. Thus, in a preferred embodiment, 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. Preferably, 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. Generally, in order to achieve a sufficiently strong magnetic response, 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. Preferably, 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. In another preferred embodiment, 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 ofcoating 120 applied to thescrim 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/m2. In another embodiment, the magnetic coating has an areal weight of between about 40 and 110 g/m2. - The
magnetic coating 120 is applied to thescrim 100 in any suitable manner. Preferably, thecoating 120 is applied from an aqueous solution (or mixture or emulsion). An aqueous based system is preferred for environmental reasons. In other embodiments, the coating is solvent based. In one embodiment, thecoating 120 is coated by gravure coating, knife coating, curtain coating, printing, and transfer coating. - Through deliberate design of the scrim construction, deliberate placement of the coating via a controlled coating process, or using both of these routes, a patterned deposition of the magnetic coating is possible. This patterned specificity can give a reduced final weight of the coated scrim, reduced cost, and/or design motifs that lend greater functionality to the final article.
- The pattern, if employed, 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 continuous. 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 themagnetic coating 120 is applied. In one embodiment, thescrim 100 is coated with PVC (polyvinyl chloride) before being coated with themagnetic coating 120. 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 tightness of the warp yarns compared to the open receptiveness of the weft yarns makes this scrim substrate highly biased towards the addition of any further chemical treatment being concentrated almost exclusively in and on the weft yarns. After the magnetic coating is applied, this pronounced difference may be quantified by bisecting the fabric into separate warp and weft components. An elemental analysis of these separated yarns, detecting and quantifying the elemental signature of the magnetic elements, shows >95% by weight of the magnetic elements localized on the weft yarns.
- The mold is being magnetizable so that the magnetic scrim will be attracted and attach to the mold. In one embodiment, the interior surface of the mold contains iron, nickel, cobalt, an alloys of certain rare earth metals, or mixtures thereof. Preferably, 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.
- All references, including publications, patent applications, and patents, cited herein are hereby incorporated by reference to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein.
- The use of the terms “a” and “an” and “the” and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The terms “comprising,” “having,” “including,” and “containing” are to be construed as open-ended terms (i.e., meaning “including, but not limited to,”) unless otherwise noted. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.
- Preferred embodiments of this invention are described herein, including the best mode known to the inventors for carrying out the invention. Variations of those preferred embodiments may become apparent to those of ordinary skill in the art upon reading the foregoing description. The inventors expect skilled artisans to employ such variations as appropriate, and the inventors intend for the invention to be practiced otherwise than as specifically described herein. Accordingly, this invention includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the invention unless otherwise indicated herein or otherwise clearly contradicted by context.
Claims (19)
Priority Applications (1)
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US16/890,360 US20200385920A1 (en) | 2019-06-04 | 2020-06-02 | Magnetic fabric for molding applications |
Applications Claiming Priority (2)
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US201962857078P | 2019-06-04 | 2019-06-04 | |
US16/890,360 US20200385920A1 (en) | 2019-06-04 | 2020-06-02 | Magnetic fabric for molding applications |
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US20200385920A1 true US20200385920A1 (en) | 2020-12-10 |
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ID=71895157
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US16/890,360 Abandoned US20200385920A1 (en) | 2019-06-04 | 2020-06-02 | Magnetic fabric for molding applications |
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US (1) | US20200385920A1 (en) |
EP (1) | EP3980592B1 (en) |
WO (1) | WO2020247493A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1469108A2 (en) * | 2003-04-17 | 2004-10-20 | GKD Gebr. Kufferath AG | Fabric with active magnetic yarns and assembly of an upper belt with such a fabric and a lower belt |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1123795A (en) * | 1965-02-04 | 1968-08-14 | Vauxhall Motors Ltd | Vehicle roof liners |
US3444025A (en) * | 1965-12-21 | 1969-05-13 | Union Carbide Corp | Method of bonding non-woven scrim |
JPS61245372A (en) * | 1986-04-16 | 1986-10-31 | 三菱樹脂株式会社 | Conductive mesh fabric |
DE10249290A1 (en) * | 2002-10-22 | 2004-05-19 | Rolf Schuhmacher | knitted |
EP2831328A4 (en) * | 2012-03-26 | 2015-12-02 | Saint Gobain Adfors Canada Ltd | Off-angle laid scrims |
-
2020
- 2020-06-02 US US16/890,360 patent/US20200385920A1/en not_active Abandoned
- 2020-06-03 WO PCT/US2020/035917 patent/WO2020247493A1/en unknown
- 2020-06-03 EP EP20749985.6A patent/EP3980592B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1469108A2 (en) * | 2003-04-17 | 2004-10-20 | GKD Gebr. Kufferath AG | Fabric with active magnetic yarns and assembly of an upper belt with such a fabric and a lower belt |
Non-Patent Citations (1)
Title |
---|
Espacenet translation of EP-1469108-A2. (Year: 2004) * |
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EP3980592B1 (en) | 2022-10-26 |
EP3980592A1 (en) | 2022-04-13 |
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