EP2464781B1 - Verwendung einer beschichteten mikrofaserbahn als abdeckung eines strahlenschutzmaterials - Google Patents

Verwendung einer beschichteten mikrofaserbahn als abdeckung eines strahlenschutzmaterials Download PDF

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Publication number
EP2464781B1
EP2464781B1 EP20100741954 EP10741954A EP2464781B1 EP 2464781 B1 EP2464781 B1 EP 2464781B1 EP 20100741954 EP20100741954 EP 20100741954 EP 10741954 A EP10741954 A EP 10741954A EP 2464781 B1 EP2464781 B1 EP 2464781B1
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Prior art keywords
radiation protection
polyurethane
fluoropolymer
microfibrous web
coated
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EP20100741954
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German (de)
English (en)
French (fr)
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EP2464781A1 (de
Inventor
Thomas Leucht
Barbara Ballsieper
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Mavig GmbH
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Mavig GmbH
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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
    • D06M11/77—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 silicon or compounds thereof
    • D06M11/79—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 silicon or compounds thereof with silicon dioxide, silicic acids or their salts
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
    • D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
    • D06M15/277—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof containing fluorine
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/285—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acid amides or imides
    • D06M15/295—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acid amides or imides containing fluorine
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • D06M15/568—Reaction products of isocyanates with polyethers
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • D06M15/572—Reaction products of isocyanates with polyesters or polyesteramides
    • 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
    • D06N3/047—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 fluoropolymers
    • 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
    • D06N3/12—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 otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—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 otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • 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
    • D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
    • D06N3/183—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials the layers are one next to the other
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F1/00—Shielding characterised by the composition of the materials
    • G21F1/02—Selection of uniform shielding materials
    • G21F1/10—Organic substances; Dispersions in organic carriers
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F1/00—Shielding characterised by the composition of the materials
    • G21F1/12—Laminated shielding materials
    • 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.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2041—Two or more non-extruded coatings or impregnations
    • Y10T442/2098—At least two coatings or impregnations of different chemical composition
    • 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.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2041—Two or more non-extruded coatings or impregnations
    • Y10T442/2098—At least two coatings or impregnations of different chemical composition
    • Y10T442/2107—At least one coating or impregnation contains particulate material
    • 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.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2164—Coating or impregnation specified as water repellent
    • Y10T442/2189—Fluorocarbon containing
    • 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.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2262—Coating or impregnation is oil repellent but not oil or stain release
    • Y10T442/227—Fluorocarbon containing
    • 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.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/259—Coating or impregnation provides protection from radiation [e.g., U.V., visible light, I.R., micscheme-change-itemave, high energy particle, etc.] or heat retention thru radiation absorption
    • 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.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/259—Coating or impregnation provides protection from radiation [e.g., U.V., visible light, I.R., micscheme-change-itemave, high energy particle, etc.] or heat retention thru radiation absorption
    • Y10T442/2598—Radiation reflective
    • 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.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
    • 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.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]
    • Y10T442/635—Synthetic polymeric strand or fiber material

Definitions

  • the present invention relates to the use of a coated microfiber web as a cover of a radiation protection material and to a radiation protection device.
  • U.S. Patent 4,923,741 discloses a flexible multi-layered cover which serves as protection against the dangers in space.
  • the cover comprises a layer which is intended to protect against bremsstrahlung, for example.
  • GB 2 118 410 A describes a radiation protection article comprising at least one flexible layer of a lead-containing material, which is covered by a fabric, fabric or nonwoven or between two layers of a knitted fabric, woven or nonwoven, wherein the fabric, fabric or nonwoven fabric, a coating of flexible polyurethane on the outer surface.
  • the present inventors have found that such Radiation protection articles, which have a polyurethane coating on the outside, are subject to a very strong abrasion when used, for example, in a medical field.
  • US 5,922,445 A discloses a sheet composite material which can be obtained by coating or impregnating a fibrous base material with an elastic polymeric substance, wherein the fibers constituting the fibrous base material and the elastic polymeric substance are prevented from bonding to each other, and which is flexible, wear-resistant and peel-resistant is.
  • the material may be prepared by applying a hydrophobing treatment to the fibrous base material, then impregnating or coating with a solution of the elastic polymeric substance to which a hydrophilic silicone has been added, and wet-setting.
  • microfiber web having improved abrasion resistance for use as a cover of a radiation protection material.
  • the microfiber web is not particularly limited. It can be any flat structure, such as fabric, knitted fabric, knitted fabric, membrane or fleece containing microfibers. Preference is given to tissue.
  • Microfibers are fibers that preferably have a fiber thickness of 0.5 dtex to 1.5 dtex, more preferably 0.3 dtex to 1.0 dtex.
  • the type of microfibers depends on the intended use. Examples of suitable types of microfibers include microfibers based on polyester, polyamide, cellulose (eg acetate or viscose) and Polytetrafluoroethylene and mixture thereof. Microfibres based on polyester and / or polyamide are particularly suitable.
  • the microfiber web may contain electrically conductive fibers to reduce electrostatic charges.
  • the electrically conductive fibers are not particularly limited. Examples of these are fibers of carbon, metal or polymer-based fibers, for example polymer fibers containing carbon or metal particles. In a preferred embodiment, polymer fibers containing carbon particles are used.
  • the electrically conductive fibers have, for example, a fiber thickness in the range from 1 dtex to 3 dtex, preferably 1.2 dtex to 2 dtex. When the diameter of the electroconductive fibers is larger (preferably 1.2 to 3 times larger, more preferably 1.2 to 2 times larger) than the diameter of the microfibers, the electroconductive fibers protrude from the tissue surface.
  • the person skilled in the art can suitably choose the amount of the electrically conductive fibers on the basis of his knowledge. It will usually contain 0.1 wt .-% to 10 wt .-%, preferably 0.5 wt .-% to 3 wt .-% of electrically conductive fibers in the microfiber web, wherein the weight percent based on the total weight of the fibers in refer to the uncoated microfiber web.
  • the finished microfiber web should have an electrostatic surface resistance of about 10 5 ohms to about 10 8 ohms (measured according to DIN 100015-1 at 25% relative humidity and 23 ° C).
  • Microfibers and the optionally present electrically conductive fibers are processed according to known methods to a microfiber web.
  • the electrically conductive fibers may be incorporated randomly or in a regular array in the microfiber web. The type of incorporation will depend on the requirements for dissipation of electrical charges as well as the process by which the microfiber web is made.
  • the electrically conductive fibers are incorporated in a regular array. They can be incorporated, for example, in a grid-like arrangement, since this arrangement derives possible electrostatic charges particularly favorable.
  • the distances between the grid lines are preferably in the range of 3 mm to 100 mm, preferably 5 mm to 75 mm, wherein the side lengths of the grid rectangles may be different from each other.
  • the air permeability of the microfiber web used as the starting material is suitably selected by a person skilled in the art according to the purpose of use.
  • the air permeability is 0 to 100 l / min per dm 2 , preferably 5 to 50 l / min per dm 2 , wherein the air permeability according to DIN EN ISO 9237 is measured.
  • the basis weight of the microfiber web used as a starting material is also suitably selected in view of the purpose of use.
  • the basis weight will usually be in the range from 50 g / m 2 to 200 g / m 2 , preferably 60 g / m 2 to 150 g / m 2 .
  • the thickness of the microfiber web used as a starting material is not particularly limited. It will usually be chosen in view of the intended use. In one embodiment, the microfiber web will have a thickness in the range of 0.05 mm to 0.20 mm, preferably 0.10 mm to 0.15 mm.
  • the microfiber web is impregnated with fluoropolymer.
  • the fluoropolymer may be a partially or perfluorinated polymer. Both homopolymers and copolymers are suitable. Fluoroalkyl acrylate homopolymers and fluoroalkyl acrylate copolymers are particularly suitable.
  • the perfluoroalkyl moiety preferably has 4 to 12 carbon atoms.
  • the optional spacer is not particularly limited, provided that it is not a perfluoroalkyl unit. It preferably has 2 to 10 atoms, more preferably 2 to 8 atoms, in the chain. Both carbon atoms and heteroatoms such as N, O and S can be present in the spacer.
  • the polymerizable group is not particularly limited and may be any polymerizable group used to form a Polymers is suitable. Examples of polymerizable groups include ethylenically unsaturated groups.
  • the fluoropolymers may have further side groups, in particular alkyl-containing side groups and / or functional side groups being suitable.
  • the fluoropolymer may have alkyl-containing side groups.
  • the alkyl moiety preferably has 1 to 12 carbon atoms.
  • the optional spacer is not particularly limited, provided that it is not an alkyl moiety. It preferably has 0 to 20 atoms, more preferably 0 to 10 atoms, in the chain. Both carbon atoms and heteroatoms such as N, O and S can be present in the spacer.
  • the polymerizable group is not particularly limited and may be any polymerizable group that is suitable for forming a polymer. Examples of polymerizable groups include ethylenically unsaturated groups.
  • the fluoropolymer may have pendant functional groups.
  • the functional unit is not particularly limited and may include any functional group. Examples of functional groups are OH, SH, NH 2 , N-methylolsulfonamides, etc.
  • the functional unit preferably has 0 to 20 carbon atoms, preferably 0 to 12 carbon atoms.
  • the optional spacer is not particularly limited, provided that it is not an alkyl moiety. It preferably has 0 to 20 atoms, more preferably 0 to 10 atoms, in the chain. Both carbon atoms and heteroatoms such as N, O and S can be present in the spacer.
  • the polymerizable group is not particularly limited and may be any polymerizable group that is suitable for forming a polymer. Examples of polymerizable groups include ethylenically unsaturated groups.
  • fluoropolymers examples include Evoral ®, Oleophobol, Scotch Guard, Tubiguard, Repellan, Ruco-Guard, Unidyne, Quecophob and Nuva, but are not limited thereto.
  • the impregnated microfiber web preferably contains from 0.2 g to 5 g, more preferably from 0.2 g to 1.2 g, of fluoropolymer based on 100 g of microfiber web used as the starting material. If an appropriate amount of fluoropolymer is used, the coated microfiber web has long-term good water and oil repellency, adhesion to the substrate and good grip.
  • the impregnating composition may further contain adjuvants such as silicones, waxes and salts (for example, zirconium salts) if necessary.
  • adjuvants such as silicones, waxes and salts (for example, zirconium salts) if necessary.
  • a layer comprising polyurethane is applied on one side of the microfiber web. Due to the layer, which includes polyurethane, the coated microfiber web is easy to clean. Furthermore, this layer ensures tightness against water and penetration by microorganisms, such as bacteria.
  • the layer comprising polyurethane is preferably applied in the form of a continuous layer on a surface of the microfiber web.
  • the layer should have a uniform thickness. The thickness of the layer is preferably in the range of 3 g / m 2 to 50 g / m 2 , more preferably in the range of 8 g / m 2 to 20 g / m 2 .
  • Suitable polyurethanes are all polyurethane homopolymers and copolymers.
  • polyurethane block copolymers such as polyester polyurethanes and polyether polyol polyurethanes come into question.
  • the polyester and polyether polyols typically have a Molularclude from 4000 to 6000.
  • An example of a commercially available product is Impranil ®.
  • the polyurethane-containing layer may contain other ingredients in addition to polyurethane.
  • One possible ingredient is a fluororesin.
  • the fluororesin may be identical to or different from the fluoropolymer.
  • the fluororesin is preferably identical to the fluoropolymer, so that the above statements apply to the fluoropolymer.
  • the fluororesin is preferably contained in the layer in an amount of 0 to 10 parts by weight, more preferably 0.5 part by weight to 3 parts by weight, based on 100 parts by weight of polyurethane.
  • the layer comprising polyurethane may comprise further adjuvants.
  • An optional adjuvant is silica.
  • the sterilizability with gases such as ethylene oxide is improved by the addition of silicon dioxide.
  • Silica is preferably used in the form of silica in the layer.
  • the size of the silica particles is usually in the range of 0.2 ⁇ m to 10 ⁇ m, preferably 0.2 ⁇ m to 5 ⁇ m.
  • Silica is preferably contained in the layer in an amount of 0 to 10 parts by weight, more preferably 1 part to 5 parts by weight, based on 100 parts by weight of polyurethane.
  • the layer comprising polyurethane may further comprise titanium dioxide.
  • Titanium dioxide serves as a matting agent.
  • the size of the titanium dioxide particles is usually in the range of 0.2 ⁇ m to 10 ⁇ m, preferably 0.2 ⁇ m to 5 ⁇ m.
  • Titanium dioxide is preferably contained in the layer in an amount of 0 to 5 parts by weight, more preferably 0.2 part by weight to 2 parts by weight, based on 100 parts by weight of polyurethane.
  • the layer comprising polyurethane may contain further additives such as deaerators, fungicides, additives for increasing the scratch resistance, water repellents, thickeners, rheology aids, leveling agents, etc.
  • additives are either additives for the production of the layer or improve the properties of the finished layer. The person skilled in the art can choose it on the basis of his specialist knowledge.
  • the additives are preferably contained in the layer in an amount of 0 to 20 parts by weight, more preferably 0.5 part by weight to 10 parts by weight, based on 100 parts by weight of polyurethane.
  • the coated microfiber web can be produced by various methods. A preferred method will be described below.
  • microfiber web is provided.
  • the microfiber web used as the starting material has been described in detail above.
  • the microfiber web can be used as such in the process. However, if desired, it may be subjected to a pretreatment, for example to increase the hydrophilicity.
  • the pretreatment for example to increase the hydrophilicity, can be carried out by methods known in the art.
  • the hydrophilicity-enhancing agent there may be used nonionic surfactants, fatty acid condensates, silicones and mixtures thereof.
  • the hydrophilicity enhancers are applied to the microfiber web.
  • the application method is not particularly limited.
  • the microfiber web is contacted (for example, by spraying, dipping, etc.) with a solution or dispersion of the hydrophilicity enhancer.
  • the resulting microfiber web is preferably dried.
  • the exact drying conditions will depend on the hydrophilicizing agent used. Usually, a drying temperature of 40 ° C to 80 ° C, preferably from 50 ° C to 60 ° C, can be selected.
  • the drying time is usually from 30 seconds to 240 seconds, preferably from 60 seconds to 120 seconds.
  • the microfiber web before the impregnation step has a liquor pickup for the fluoropolymer of from 65 wt% to 85 wt%, stronger preferably from 65 wt .-% to 70 wt .-%, based on the dry weight of the optionally pretreated microfiber web.
  • microfiber web is impregnated with an impregnation composition comprising fluoropolymer.
  • fluoropolymer Suitable fluoropolymers are described above.
  • microfiber web is impregnated by known methods. These methods include spraying, dipping, exhaustion, paddling, and foam impregnation. Dipping impregnation is preferred because it allows complete impregnation of the microfiber web.
  • the fluoropolymer is usually used in the form of a solution or dispersion.
  • concentration of the solution or dispersion is not particularly limited, and is preferably in the range of 5 g / L to 70 g / L, more preferably in the range of 5 g / L to 50 g / L.
  • the impregnated microfiber web is dried.
  • the present inventors have found that the properties of fluoropolymer impregnations can be influenced by a suitable sequence of drying and thermal treatment. Without wishing to be bound by any particular theory, they believe that the molecules of the fluoropolymer initially settle randomly on a substrate (such as the present microfiber web) when the solvent is removed. Due to the statistical (ie disordered) arrangement, the hydrophobic fluorine atoms are initially also statistically distributed. When the fluoropolymer is exposed to a higher temperature, comes it leads to a reorientation of the molecules of the fluoropolymer, wherein the hydrophobic fluorine atoms are preferably arranged on the surface of the layer.
  • a test fabric of cotton EMPA 210, plain weave, bleached, without optical brightener (source EMPA Test Materials AG, St. Gallen, Switzerland) is impregnated by padding with 0.5 g of fluoropolymer per 100 g of cotton fabric and dried at room temperature.
  • the fabric is then cut into pieces of equal size.
  • the pieces are then heated at different temperatures for 120 s (eg 40 ° C, 50 ° C, Across, 140 ° C, 150 ° C), the temperature difference between the individual steps being 10 ° C.
  • the exact minimum and maximum temperature depends on the fluoropolymer and can be determined from the measured waveform.
  • the weight of the respective piece of fabric which has been heated at the temperature T i is measured (T i ).
  • the fabric pieces are padded with an aqueous liquor at 2 bar pressure and 1.5 m / min roller speed.
  • the weight of the respective piece of fabric which has been heated at the temperature T i wet (T i ) is measured.
  • the drying temperature should be selected to be in the range where the relatively constant high liquor pickup is is obtained.
  • the temperature of the thermal treatment should be selected to be within the range for which the relatively constant low liquor pickup is obtained. The transition area between the two zones is less suitable.
  • the liquor pick-up when drying is at least 20%. In general, the liquor pick-up, when in thermal treatment, will be at most 10%.
  • these figures are only guidelines and may vary depending on the fluoropolymer.
  • step (c) the impregnated microfiber web is dried.
  • the molecules of the fluoropolymer deposit statistically on the microfiber web.
  • the drying conditions are chosen so that there is no reorientation of the molecules of the fluoropolymer.
  • the exact drying conditions depend on the fluoropolymer used. Usually, a drying temperature of 40 ° C to 110 ° C, preferably from 50 ° C to 80 ° C, is selected. The drying time is usually from 10 s to 240 s, preferably from 30 s to 120 s.
  • Impregnation with the fluoropolymer sets the absorbency of the microfiber web. By merely drying the fluoropolymer, it is easier to ensure that the polyurethane coating composition does not penetrate the entire microfiber web. If the fluoropolymer were to be thermally treated prior to the application of the polyurethane coating composition so that the molecules of the fluoropolymer would orient themselves, the repellent surface would make subsequent coating with the coating composition more difficult.
  • the microfiber web has a liquor pickup for the coating composition of from 30% to 60%, more preferably from 30% to 50% by weight, based on dry weight of the impregnated microfiber web ,
  • the coating composition comprising polyurethane is applied to only one side of the dried, impregnated microfiber web.
  • the constituents of the layer comprising polyurethane have been described in detail above.
  • the coating composition is preferably used in the form of a solution or dispersion of the desired ingredients.
  • concentration of the polyurethane in the solution or dispersion is preferably in the range of 50 wt% to 80 wt%, more preferably 60 wt% to 80 wt%.
  • the coating composition is applied to the dried, impregnated microfiber web by known methods. These methods include roll coating, knife coating, knife coating, foam coating, transfer coating, and film drawing, preferably doctoring is used.
  • FIG. 1 shows a schematic representation of the cross section of a finished coated microfiber web, the microfiber layer is shown for simplicity as a monolayer.
  • the microfiber web (1) comprises microfibers (2) and electrically conductive fibers (3), in which embodiment the diameter of the electrically conductive fibers (3) is greater than the diameter of the microfibers (2).
  • the fluoropolymer impregnation is not shown in this figure.
  • the layer (4) comprising polyurethane is only present on one side of the finished microfiber web.
  • the thicknesses can be measured by optical methods such as microscopy.
  • optical methods such as microscopy.
  • An example of a possible measuring method is the investigation of a cross section by means of scanning electron microscopy.
  • the degree of penetration is in FIG. 1 pictorially indicated by the right curly bracket and the indication "x%". In FIG. 1 it is about 50%, because the microfibers (white balls) are about 50% embedded in the layer that includes polyurethane.
  • the coating composition may be dried after application in step (d). Alternatively, the drying may be dispensed with and the coating composition dried in the course of the thermal treatment in step (e).
  • the conditions are chosen depending on the chosen coating composition. However, they should be chosen so that there is no reorientation of the molecules of the fluoropolymer.
  • a drying temperature of 40 ° C to 110 ° C, preferably from 80 ° C to 100 ° C, can be selected.
  • the drying time is usually from 10 s to 240 s, preferably from 10 s to 120 s.
  • step (e) thermally treating the coated microfiber web obtained in step (d)
  • step (e) the (optionally dried) coated microfiber web obtained in step (d) is thermally treated.
  • the conditions are chosen so that there is a reorientation of the molecules of the fluoropolymer.
  • a temperature of 120 ° C to 190 ° C, preferably from 140 ° C to 180 ° C is usually selected. It is of course possible to carry out the thermal treatment in several stages with different temperatures.
  • the duration of the thermal treatment is usually from 10 s to 240 s, preferably from 30 s to 120 s.
  • the coated microfiber web may be used as a cover of a radiation protection material in a radiation protection device, wherein the coated microfiber web is applied to at least one side of the radiation protection material and wherein the polyurethane coated side is adjacent to the radiation protection material.
  • FIG. 2 shows a schematic representation of a cross section of the radiation protection device (6) according to the invention.
  • the microfiber web (1) comprises microfibers (2) and electrically conductive fibers (3), in which embodiment the diameter of the electrically conductive fibers (3) is greater than the diameter of the microfibers (2).
  • the fluoropolymer impregnation is not shown in this figure.
  • the layer (4) comprising polyurethane is present only on one side of the finished microfiber web (1).
  • the microfiber web (1) is applied to both sides of the radiation protection material (5), wherein the layer (4) comprising polyurethane is in each case adjacent to the radiation protection material (5).
  • radiation protection devices all devices which protect persons or objects from harmful radiation, in particular X-radiation, UV radiation, infrared radiation, and radioactive radiation, particularly preferably X-radiation.
  • examples include, but are not limited to, aprons, gloves, umbrellas, curtains, coats, drapes, draping materials, eye protection products and overcoats. Due to its flexibility and its pleasant haptic properties, the coated microfiber web is particularly suitable for flexible radiation protection devices and / or radiation protection devices that are worn by people.
  • the type of the radiation protection material will depend on the radiation to be shielded and is not particularly limited. By way of example, radiation protection material based on lead or lead oxide can be mentioned. Lead-free radiation protection material can also be used. Lead-free radiation protection material is, for example, in DE 10 2004 001 328 A . WO 2005/024846 A . WO 2005/023116 A . DE 10 2006 028 958 A . WO 2004/017332 A and DE 10 2005 034 384 disclosed. Combinations of radiation protection material are also possible.
  • the radiation protection material may comprise one or more layers.
  • the coated microfiber web is applied to at least one side of the radiation protection material.
  • the radiation protection material is enveloped by the coated microfiber web.
  • the microfiber web and the radiation protection material can be joined together in a known manner, for example by sewing, gluing, taping, laminating or laminating.
  • the microfiber web and the radiation protection material are processed into a composite material, for example by lamination or lamination, they can subsequently also be processed by means of confectioning processes, such as cutting, Punching, water jet cutting, molding or laser beam cutting are processed to the final products.
  • the coated microfiber web Due to its textile character, the coated microfiber web also gives the radiation protection devices a pleasant surface feel, which, in particular, gives garments a pleasant wearing comfort.
  • the coated microfiber web is arranged so that the polyurethane-coated side is adjacent to the radiation protection material.
  • the polyurethane-coated side is thus turned outwards and thus exposed to strong physical loads. This leads to increased closure and abrasion.
  • the inventive arrangement in which the polyurethane coated side faces inwards, the physical load is much lower.
  • the coated microfiber web has a high cutting and tear resistance, so that its service properties are clearly superior to those of conventional materials.
  • the microfiber web was made from polyester microfibers having a fiber density of 1 dtex and carbonaceous fibers (Belltron B31, available from Kanebo Gohsen Ltd., Japan).
  • the fibers were made into a canvas with about 70 warp threads / cm and about 37 weft threads / cm with a basis weight of 100 g / m 2 .
  • the carbonaceous electroconductive fibers were incorporated in the form of a grid measuring 5 ⁇ 5 mm.
  • the microfiber web had an air permeability of about 15 l / min per dm 2 and an electrostatic surface resistance of about 1 x 10 8 ohms (according to DIN 100015-1 at 25% relative humidity and 23 ° C).
  • the tensile strengths were about 850 N in warp and about 650 N in the weft.
  • the microfiber web was passed over a tenter.
  • Silastol WK available from Schill + Seilacher, DE
  • microfiber web was impregnated by padding with 10 g / l Evoral O 35 (fluoropolymer, available from the company Schill + Seilacher, DE).
  • Evoral O 35 fluoropolymer, available from the company Schill + Seilacher, DE.
  • the microfiber web was dried at 60 ° C. for 90 s. There was no orientation of the molecules of the fluoropolymer.
  • the applied amount of Evoral was about 0.7 g / 100 g microfiber web.
  • the coating composition had the following composition: 50 parts Impranil DLP-R, Bayer (polymer dispersion) 0.2 parts Agitan 218, Münzing Chemie (deaerator) 0.4 parts Afrotin FG, Schill + Seilacher (fungicide) 0.4 parts Byk 333, Byk Chemie (Additive for increasing scratch resistance) 0.8 parts Tegophobe 1650, Degussa (water repellent) 1.2 parts colloidal silica 41.7 parts water 0.3 parts Rheolate 255, Elementis (thickener) 4.2 parts Evoral, Schill + Seilacher (Fluoropolymer) 0.8 parts Hombitec RM 400, Sachtleben chemistry (matting agent)
  • the addition was carried out by adding in the above-mentioned order with the aid of a dissolver.
  • the stirring time was 35 minutes.
  • the paste produced was applied by means of an air knife surface as a closed film on the microfiber web.
  • the coated microfiber web was dried stepwise in a tenter frame in five 3 m long sections for a total of 2 minutes. Drying field 1: 80 ° C Drying field 2: 120 ° C Drying fields 3 to 5: 160 ° C
  • microfiber web was examined in accordance with DIN EN 13795-2 in order to clarify its suitability as a cover for X-ray protective material in the OR area.
  • KbE colony-forming units
  • the measured values show that the material can be used excellently as a textile in the surgical area.
  • Example 1 of WO 2005/024846 manufactured lead-free radiation protection material was cut in the form of a radiation protection apron.
  • the coated microfiber web prepared above was cut to size and placed on both sides of the radiation protection material with the polyurethane-coated side facing the radiation protection material.
  • the microfiber webs and the radiation protection material were sewn together, so that a radiation protection apron was obtained.
  • the radiation protection apron mediated by the use of the described microfiber web a comfortable fit. Skin irritation was avoided.
  • the described microfiber web serves as a protective barrier for the sensitive radiation protection inlay.
  • the radiation protection apron had an excellent tightness against blood, urine and microorganisms. It also could be sterilized without damage from ethylene oxide. Consequently, the radiation protection apron is very well suited for use in the medical field.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Laminated Bodies (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
EP20100741954 2009-08-14 2010-08-10 Verwendung einer beschichteten mikrofaserbahn als abdeckung eines strahlenschutzmaterials Active EP2464781B1 (de)

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US23401409P 2009-08-14 2009-08-14
DE102009037565A DE102009037565A1 (de) 2009-08-14 2009-08-14 Beschichtete Mikrofaserbahn und Verfahren zur Herstellung derselben
PCT/EP2010/061631 WO2011018459A1 (de) 2009-08-14 2010-08-10 Beschichtete mikrofaserbahn und verfahren zur herstellung derselben

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CN102471992B (zh) 2014-01-08
JP5668065B2 (ja) 2015-02-12
WO2011018459A1 (de) 2011-02-17
US20120181458A1 (en) 2012-07-19
CN102471992A (zh) 2012-05-23

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