WO2016141902A1 - Method for producing a textile composite, especially for outdoor applications, which contains at least one layer of polymeric nanofibers, and a textile composite prepared by this method - Google Patents

Method for producing a textile composite, especially for outdoor applications, which contains at least one layer of polymeric nanofibers, and a textile composite prepared by this method Download PDF

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Publication number
WO2016141902A1
WO2016141902A1 PCT/CZ2016/000026 CZ2016000026W WO2016141902A1 WO 2016141902 A1 WO2016141902 A1 WO 2016141902A1 CZ 2016000026 W CZ2016000026 W CZ 2016000026W WO 2016141902 A1 WO2016141902 A1 WO 2016141902A1
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WIPO (PCT)
Prior art keywords
layer
textile
polymeric nanofibers
textile carrier
carrier layer
Prior art date
Application number
PCT/CZ2016/000026
Other languages
English (en)
French (fr)
Inventor
Roman KNIZEK
Oldrich Jirsak
Filip Sanetrnik
Marie KOSKOVA
Denisa KARHANKOVA
Jakub Wiener
Original Assignee
Technicka Univerzita V Liberci
SVITAP J.H.J. spol.s.r.o.
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Application filed by Technicka Univerzita V Liberci, SVITAP J.H.J. spol.s.r.o. filed Critical Technicka Univerzita V Liberci
Publication of WO2016141902A1 publication Critical patent/WO2016141902A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
    • D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
    • D01D5/0084—Coating by electro-spinning, i.e. the electro-spun fibres are not removed from the collecting device but remain integral with it, e.g. coating of prostheses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/02—Layered products comprising a layer of synthetic resin in the form of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82B—NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS, MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES AS DISCRETE UNITS; MANUFACTURE OR TREATMENT THEREOF
    • B82B3/00—Manufacture or treatment of nanostructures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
    • 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
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/08—Organic compounds
    • D06M10/10—Macromolecular compounds
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • 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
    • 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
    • D06M17/00—Producing multi-layer textile fabrics
    • 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
    • D06M17/00—Producing multi-layer textile fabrics
    • D06M17/04—Producing multi-layer textile fabrics by applying synthetic resins as adhesives
    • D06M17/10—Polyurethanes polyurea
    • 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
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0097—Web coated with fibres, e.g. flocked
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
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    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
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    • B32B2307/73—Hydrophobic
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Definitions

  • the invention relates to a method for producing a textile composite, especially for outdoor applications, which contains at least one layer of polymeric nanofibers deposited on a textile carrier layer.
  • the invention also relates to a textile composite, particularly for outdoor applications, which contains a layer of polymeric nanofibers deposited on a textile carrier layer.
  • Partial solution to this problem is represented by the composites proposed, for example, in US 2008220676 or US 2009176056, in which a layer of polymeric nanofibers is coated with a hydrophobic substance.
  • Their disadvantage is the fact that the hydrophobic substance is deposited in droplets only on the surface of this layer, or on the surface of its nanofibers, but their interfibrous spaces are mostly free, and when a higher hydrostatic load is applied, approximately 1 ,300 mm of water column, then again mutual slippage of the individual nanofibers occurs and that leads to water penetration.
  • CZ PV 2011-306 a method for increasing hydrophobic properties of a layer of polymeric nanofibers was disclosed in CZ PV 2011-306, which consists in that emulsion of a hydrophobic agent is applied to the layer of polymeric nanofibers by spraying.
  • the drawback of this method is the fact that part of the hydrophobic agent is deposited purposefully in the interfibrous spaces of the layer of polymeric nanofibers and closes them, by which means it substantially reduces its vapor permeability and breathability.
  • As a result in spite of increased hydrostatic resistance of this layer, its real applicability is limited.
  • CZ PV 2012-325 Another method for increasing hydrophobic properties of a layer of polymeric nanofibers was proposed in CZ PV 2012-325.
  • This method consists in that the hydrophobic agent is applied to the layer of polymeric nanofibers in a liquid or plastic state by low pressure vacuum plasma spraying. In this manner, a uniform continuous film of the agent is formed on the surface of the polymeric nanofibers.
  • the disadvantage of this process is the fact that the layer of polymeric nanofibers, having been treated in this manner, cannot be joined to other layers of material in the conventional manner, since its increased hydrophobic properties inhibit the penetration of a liquid binder into its structure and, consequently, there is no bonding between adjacent polymeric nanofibers. Due to this, the resulting composite is extremely predisposed to mechanical damage of the layer of nanofibers, or the layer separation, which considerably reduces its practical applicability.
  • the goal of the invention is to eliminate or at least reduce the disadvantages of the background art and provide a method which would enable to produce a textile composite, especially for outdoor applications, which would contain at least one layer of polymeric nanofibers connected to at least one textile layer with sufficient resistance, while achieving at the same time high hydrostatic resistance, as well as vapor permeability and breathabi!ity.
  • the goal of the invention is also to provide a textile composite, especially for outdoor applications, which contains at least one layer of polymeric nanofibers prepared by this method.
  • the aim of the invention is achieved by a method for producing a textile composite, especially for outdoor applications, which contains at least one layer of polymeric nanofibers deposited on a textile carrier layer, whose principle consists in that after deposition of the layer of polymeric nanofibers and connecting the layers by a binder, at least one hydrophobic agent in a liquid or plastic state is applied by plasma spraying to the textile carrier layer, from the side opposite the side where the layer of polymeric nanofibers is deposited.
  • the binder can penetrate into the inner structure of the layer of polymeric nanofibers which has not been pretreated, by which means this layer is reinforced and the resistance of its connection to the textile carrier layer increases.
  • the binder In addition, if the binder penetrates through its entire thickness of layer of polymeric nanofibers, it also protects it from abrasion from its outer side.
  • the hydrophobic agent considerably increases the hydrophobic properties of the textile carrier layer, without reducing its vapor permeability and breathability due to the method of its application.
  • a suitable method for applying a binder to the textile carrier layer and/or layer of polymeric nanofibers is gravure printing, spraying or spray coating.
  • the layer of polymeric nanofibers is overlaid by a cover layer - textile or non-textile, which is further connected to the layer of polymeric nanofibers and/or the textile carrier layer.
  • the layer of polymeric nanofibers is overlaid by a cover layer after the application of the hydrophobic agent to the textile carrier layer. So as to increase the hydrostatic resistance of the resulting composite, it is possible to apply a hydrophobic agent in a liquid or plastic state by plasma spraying to the cover layer formed by a textile prior to its connection to the layer of polymeric nanofibers and/or the textile carrier layer, and/or after it.
  • the layer of polymeric nanofibers is overlaid by the layer of polymeric nanofibers deposited on a textile carrier layer, whereby both textile carrier layers, prior to the application of the hydrophobic agent by plasma spraying to at least one of them, are connected to each other, preferably outside the area of the polymeric nanofibers deposited on them.
  • a four-layer composite is formed, which consists of two mutually unconnected layers of polymeric nanofibers.
  • a suitable method for the application of the hydrophobic agent to the textile carrier layer or to the textile cover layer is low pressure vacuum plasma spraying.
  • the amount of the hydrophobic agent is in this case up to 5 % of basis weight of the textile carrier layer, or the cover layer.
  • a textile composite especially for outdoor applications, which contains a layer of polymeric nanofibers deposited on a textile carrier layer, whose principle consist in that the layer of polymeric nanofibers and the textile carrier layer are connected by formations of a binder which extend into the inner structure of the layer of polymeric nanofibers, whereby on the fibers of the textile carrier layer is at least from one side formed a coating of at least one hydrophobic agent applied by plasma spraying.
  • This enables to achieve a sufficiently resistant connection of the textile carrier layer and the layer of polymeric nanofibers, reinforcing the layer of polymeric nanofibers, as well as increasing the hydrostatic resistance of the textile carrier layer by plasma spraying, without reducing its vapor permeability and breathabi!ity.
  • the hydrophobic agent can be also applied to the layer of polymeric nanofibers by plasma spraying at least from one side.
  • the layer of polymeric nanofibers is overlaid by a cover layer, which is connected to the layer of polymeric nanofibers and/or to the textile carrier layer by formations of the binder, thereby increasing the overall resistance of the textile composite and protection of the layer of polymeric nanofibers.
  • the layer of polymeric nanofibers is overlaid by a cover layer, preferably textile, which is connected to the textile carrier layer by sewing or needling.
  • a coating of at least one hydrophobic agent applied by plasma spraying is created also on the fibers of the textile cover layer.
  • the layer of polymeric nanofibers is overlaid by a layer of polymeric nanofibers, deposited on a textile carrier layer.
  • Suitable hydrophobic agents for the application by plasma spraying include especially fluorinated carbohydrate-based hydrophobic agents, silicone- based hydrophobic agents and/or alkane-based hydrophobic agents. These agents are applied to the fibers of the textile carrier layer, or to the fibers of the cover layer in an amount of up to 5 % of basis weight of the textile carrier layer, or the basis weight of the cover layer.
  • Fig. 1 schematically represents a cross-section of a variant of a textile composite according to the invention
  • Fig. 2 a cross- section of the second variant of a textile composite according to the invention
  • Fig. 3 a cross-section of the third variant of a textile composite according to the invention.
  • a semi-finished product is formed, which contains at least one layer 2 of polymeric nanofibers and at least one textile carrier layer 3 formed by a standard textile fabric (knitted, woven, non-woven), whereby after connecting these layers 2, 3 by a suitable binder, e.g. fusible, at least one hydrophobic agent in a liquid or plastic state is applied to the textile carrier layer 3 by plasma spraying.
  • a suitable binder e.g. fusible
  • This agent is at the same time deposited at least on the impacting parts of the surface of the individual fibers of the textile carrier layer 3, or on their entire surface, where it creates a continuous coating, thereby increasing substantially the hydrostatic resistance of this layer 3. Due to the fact that during plasma spraying it is on principle a very small amount of the hydrophobic agent that is applied, the inter-fibrous spaces of the textile carrier layer 3 cannot be filled up, or blocked, and so the textile carrier layer 3 retains substantially unchanged vapor permeability and breathability.
  • the hydrophobic agent If during the application of the hydrophobic agent a certain part of it penetrates through the entire thickness of the textile carrier layer 3, it is deposited at least on the impacting side of unillustrated formations of the binder connecting the textile carrier layer 3 and the layer 2 of polymeric nanofibers, and optionally also at least on the impacting side of the polymeric nanofibers, by which menas the hydrostatic resistance the layer 2 of polymeric nanofibers is further increased.
  • the resulting composite thus combines the textile carrier layer 3, having a considerably increased hydrostatic resistance, but also having the original high vapor permeability and breathability, with the layer 2 of polymeric nanofibers, which has thanks to its inner structure a high hydrostatic resistance, as well as vapor permeability and breathability, and whose hydrostatic resistance can be also increased as a side effect.
  • both layers 2, 3 of the textile composite 1_ can be connected by a commonly used method using a commonly used binder (binders), e.g., fusible, which can freely penetrate into their inner structure and in the case of the layer 2 (layers) of polymeric nanofibers also through its entire thickness, making the connection of the layers 2, 3 of the composite 1 sufficiently resistant, whereby, in addition, the layer 2 (layers) of polymeric nanofibers is reinforced by the binder which penetrated into its inner structure.
  • binder e.g., fusible
  • the binder which penetrated through the entire thickness of the layer 2 of polymeric nanofibers, protects this layer 2 from its outer side from abrasion, which allows to wash the composite 1 according to the invention in a conventional manner, without causing mechanical damage to the layer 2 (layers) of polymeric nanofibers or its separation from the carrier layer 3 of the composite 1 and loss of the favorable parameters of the textile composite 1, all that even if the layer 2 of polymeric nanofibers is applied to the surface of this composite i, without being overlaid by another layer or material, when it constitutes, e.g., the lining of the finished product.
  • a suitable textile carrier layer 3 is substantially any fabric of any type
  • the textile carrier layer 3 made from fleece constitutes the upper layer.
  • a suitable material of the nanofibers is preferably hydrophobic, easily spinnab!e polymer, such as polyamide 6 (PA6), polyamide 6.6 (PA6.6), polyurethane (PUR), polyvinyl alcohol (PVA), polyester (PES) or polyvinylidene fluoride (PVDF), etc., and copolymers or mixtures of at least two of them, whereby the basis weight of the layer 2 of polymeric nanofibers according to the requirements and intended application usually ranges from 3 to 20 g/m 2 , or is even higher.
  • the layer 2 of polymeric nanofibers can be provided with a suitable antimicrobial treatment, e.g.
  • the layer 2 (layers) of polymeric nanofibers is as uniform as possible, both in the direction of its width and in the direction of its length or also its thickness.
  • the highest evenness is achieved by producing it by nozzle-less electrostatic spinning, in which a polymer solution or melt is spun in an electric field created between a collecting electrode and a spinning electrode of elongated shape - composed, for example, of a cylinder (see, e.g., EP 1673493) or a string (see, e.g., EP 2059630 or EP 2173930).
  • a polymer solution or melt is spun in an electric field created between a collecting electrode and a spinning electrode of elongated shape - composed, for example, of a cylinder (see, e.g., EP 1673493) or a string (see, e.g., EP 2059630 or EP 2173930).
  • This principle is commercially employed in the technology NanospiderTM of the company Elmarco.
  • the layer 2 of polymeric nanofibers can be deposited directly to the textile carrier layer 3, which is used as a substrate material for depositing nanofibers during electrostatic spinning, whereby for connecting these layers 2, 3 by a binder, which can be also, e.g., the material of one or both these layers 2, 3, and, optionally, also after adding at least one more layer, the hydrophobic agent is applied to the textile carrier layer 3 by plasma spraying.
  • a binder which can be also, e.g., the material of one or both these layers 2, 3, and, optionally, also after adding at least one more layer, the hydrophobic agent is applied to the textile carrier layer 3 by plasma spraying.
  • the layer 2 of polymeric nanofibers by another method for producing polymeric nanofibers, for example, by using a static spinning electrode formed, e.g., by a needle, a tube, a nozzle, or a group of needles, tubes or nozzles, a listel, a string, etc., or movable spinning electrodes formed, e.g., by a rotating disc, spiral, ring, a rewinding belt according to CZ 2008-529, etc., whereby the solution for spinning is spun from the surface of this spinning electrode, or its spinning element/elements.
  • a static spinning electrode formed, e.g., by a needle, a tube, a nozzle, or a group of needles, tubes or nozzles, a listel, a string, etc.
  • movable spinning electrodes formed, e.g., by a rotating disc, spiral, ring, a rewinding belt according to CZ 2008-529, etc.
  • Another suitable method for producing a layer of polymeric nanofibers is, e.g., electrical spinning according to CZ 304137, wherein an electrical field for spinning is created between a spinning electrode, to which a high AC voltage is brought, and air ions and/or gas ions created and/or brought to its vicinity.
  • a spinning electrode to which a high AC voltage is brought, and air ions and/or gas ions created and/or brought to its vicinity.
  • polymeric nanofibers with an electric charge of opposite polarity and/or segments with an electric charge of opposite polarity which after their formation due to the action of electrostatic forces create a voluminous structure, which moves freely in the direction of the gradient of the electric fields away from the spinning electrode.
  • centrifugal spinning for producing polymeric nanofibers, when the solution for spinning is extruded by the centrifugal force through the holes formed in the casing of a rotating body in the shape of a disc (e.g. in the sense of DE 102005048939) or a cylinder (e.g. in the sense of JP 2008127726).
  • any binder can be used, e.g. fusible, or a mixture of at least two binders, which are applied to the surface of at least one or both layers being connected by any of the known methods - preferably, e.g., by the method of gravure printing, spraying or spray coating, etc., when points of the binder and/or its planar and/or linear formations are applied to the layer/the layers, e.g. in the form of a regular or irregular grid.
  • the material of one or both layers being connected can also be used as a fusible binder.
  • the textile carrier layer 3 contains bicomponent fibers, e.g. sheath-core bicomponent fibers, or of any other known type, which contain sections made of polypropylene and polyethylene, whereby the polyethylene is during the bonding of the layers melted and after solidification it connects the textile carrier layer 3 to the layer 2 of polymeric nanofibers and, if needed, also to another layer (other layers) of the composite 1.
  • bicomponent fibers e.g. sheath-core bicomponent fibers, or of any other known type, which contain sections made of polypropylene and polyethylene, whereby the polyethylene is during the bonding of the layers melted and after solidification it connects the textile carrier layer 3 to the layer 2 of polymeric nanofibers and, if needed, also to another layer (other layers) of the composite 1.
  • the cover layer 4 can be connected to the layer 2 of polymeric nanofibers and/or to the textile carrier layer 3 during the bonding of the layer 2 of polymeric nanofibers with the textile carrier layer 3 by a binder applied to one of the layers, or additionally in the following step, or it can be connected to the textile carrier layer 3 by another method, e.g. by sewing or needling and the like.
  • a suitable hydrophobic agent in a liquid or plastic state e.g. a polymeric fluorinated carbohydrate-based hydrophobic agent, or a silicone-based hydrophobic agent and/or an alkane-based hydrophobic agent, etc., or a combination thereof, is applied by plasma spraying to the textile carrier layer 3 of a semi-finished product thus prepared.
  • a suitable hydrophobic agent in a liquid or plastic state e.g. a polymeric fluorinated carbohydrate-based hydrophobic agent, or a silicone-based hydrophobic agent and/or an alkane-based hydrophobic agent, etc., or a combination thereof.
  • the pressure usually ranges from 70 to 150 militorr and the temperature is in the range from the ambient temperature, or room temperature, i.e.
  • the process of the application itself is then carried out according to the requirements for the depth of the penetration of the hydrophobic agent into the inner structure of the textile carrier layer 3 and/or for its amount approximately for a period of 3 to 6 minutes in the required part of its area.
  • the semi-finished product is during the application of plasma spraying either static, or it moves, e.g., rotates, or rewinds, etc., so as to achieve the required penetration of the hydrophobic agent and its deposition on the required part of the surface of the fibers of the textile carrier layer 3.
  • the hydrophobic agent For most of the intended applications, it is sufficient to perform only a single-step application of the hydrophobic agent, but, in case of need, its application can be repeated, or it can be performed at least once complementarily from the side of the layer 2 of polymeric nanofibers.
  • the amount of the hydrophobic agent applied is then according to the requirements and the materials used approximately up to 5 % basis weight of the textile carrier layer 2.
  • the layer 2 of polymeric nanofibers is overlaid by a cover layer 4 ⁇ different from or the same as the textile carrier layer 3), it is possible to apply the hydrophobic agent both to the textile carrier layer 3, and the cover layer 4, whereby to each of them it is possible to apply a hydrophobic agent from its outer side, whereby the hydrophobic agent can be of another type and/or it can be applied in a different amount and/or with different parameters of applying, or it is possible to leave the cover layer 4 without plasma spraying, or optionally only with plasma spray penetrating through the other layers 2, 3 of the textile composite ⁇ . If the hydrophobic agent is applied to the cover layer 4, its amount is up to approximately 5 % of basis weight of the cover layer 4 according to the requirements and the materials used.
  • the most simple variant of the textile composite i according to the invention is a composite 1. which contains a textile carrier layer 3 with at least one hydrophobic agent applied by plasma spraying, whereby to one of the surfaces of the textile carrier layer 3 is applied a layer 2 of polymeric nanofibers, which is firmly connected to it by point and/or linear and/or planar formations of a binder.
  • a suitable material - a textile layer or, possibly, also non-textile layer (e.g. made of foil, paper, etc.), namely especially for achieving the required properties and also for the protection of the layer 2 of polymeric nanofibers from mechanical damage or from abrasion.
  • This layer (these layers) is/are at the same time connected to at least one layer 2, 3 of a textile composite 1 or to all its layers 2, 3, for example, by means of a binder and/or by sewing, or by another appropriate method. If this layer (these layers) is/are connected to it/them by means of a binder, then it preferably undergoes plasma spraying together with it/them; if this layer (these layers) is/are connected to it/them in another method, e.g. by sewing, needling, etc., undergoing of plasma spraying is not necessary.
  • the layer 2 of polymeric nanofibers can be reinforced by a network or a grid of at least one polymer printed at least on one of its surfaces (preferably on the surface away from the textile carrier layer 3), e.g. in the sense of CZ 27368, which further increases resistance and the protection of the layer 2 of polymeric nanofibers.
  • Fig. 3 shows another variant of a textile composite 1_ according to the invention.
  • the textile composite 1 contains two textile carrier layers 3, 30, each of which has a layer 2, 20 of polymeric nanofibers deposited on one of its surfaces by means of a binder, whereby both the textile carrier layers 3, 30 are facing each other by layers 2, 20 of polymeric nanofibers, and are connected to each other, preferably outside these layers 2, 20, e.g. along their circumferences.
  • the entire textile composite 1 or at least one of its carrier layers 3, 30 before formation of the textile composite 1 , can undergo plasma spraying, whereby if the hydrophobic agent is applied to both carrier layers 3, 30, it is possible to apply a different hydrophobic agent, or a different amount of the hydrophobic agent to each of them.
  • the textile carrier layers 3, 30 can be identical, or they can differ, e.g., by the material and/or the diameter of the nanofibers and/or basis weight and/or thickness, or by another parameter. This also applies to the layer of polymeric nanofibers 2, 20.
  • the textile composite 1 according to the invention is intended especially for the production of outdoor clothing and other outdoor textile products.
  • Listed below are illustrative specific examples of the textile composite 1 according to the invention. Nevertheless, these examples are merely illustrative, whereby, as is apparent to a person skilled in the art, other variants of the textile composite 1 according to the invention may differ from these examples, for example, by the material and/or the parameters of the individual layers 2, 20, 3, 30, 4, and/or by the binder used, and/or by the hydrophobic agent, and/or by the conditions of plasma spraying, or they may be supplemented with other textile or non-textile layers.
  • a planar layer of nanofibers of polyamide 6 (PA6) with a basis weight of 4 g/m 2 was formed on a device for electrostatic spinning equipped with a spinning electrode composed of a rotating cylinder according to EP 1673493.
  • This layer was connected to a textile carrier layer consisting of a polyamide (PA) woven fabric having a basis weight of 45 g/m 2 by means of polyurethane (PU), which was applied to the textile carrier layer in an amount of 10 g/m 2 .
  • PU polyurethane
  • a two-layer textile composite was formed according to the invention, having a final permeability of 2.5 l/m 2 /s, vapor permeability Ret 3.1 Pa.m 2 W " and hydrostatic resistance of 10,000 mm of water column.
  • This textile composite was afterwards washed 3 times in a conventional manner in a washing machine, whereby its parameters were maintained to a considerable extent, being still sufficient for outdoor use: permeability being 2.2 l/m 2 /s, vapor permeability being Ret 4.1 Pa.m 2 .W “1 and hydrostatic resistance being 8,000 mm of water column.
  • the layer of polymeric nanofibers of a composite according to example 1 was after plasma spraying of a hydrophobic agent overlaid by a cover layer consisting of a polyester (PL) woven fabric with a basis weight of 28 g/m 2 , to whose surface was applied poiyurethane in an amount of 10 g/m 2 .
  • a cover layer consisting of a polyester (PL) woven fabric with a basis weight of 28 g/m 2 , to whose surface was applied poiyurethane in an amount of 10 g/m 2 .
  • Connecting all the layers resulted in the formation of a three-layer textile composite according to the invention, having a final permeability of 3.18 L/m 2 /s, vapor permeability Ret 3.0 Pa.m 2 .W "1 and hydrostatic resistance of 12,000 mm of water column.
  • a planar layer of nanofibers of polyamide 6 (PA6) having a basis weight of 3 g/m 2 was formed in the same manner as in Example 1.
  • This layer was connected to a textile carrier layer consisting of a cotton woven fabric having a basis weight of 45 g/m 2 by means of poiyurethane (PU), which was applied to the textile carrier layer in an amount of 10 g/m 2 .
  • PU poiyurethane
  • PU poiyurethane
  • the layer of polymeric nanofibers was overlaid by a cover layer consisting of a polyester (PL) woven fabric having a basis weight of 28 g/m 2 , to whose surface was applied poiyurethane in an amount of 10 g/m 2 .
  • PL polyester
  • Connecting all the layers resulted in the formation of a three-layer textile composite according to the invention having permeability 2,2 l/m 2 /s, vapor permeability Ret 4,1 Pa.m .W ⁇ 1 and hydrostatic resistance of 21 ,000 mm of water column.
  • a planar layer of nanofibers of polyamide 6 (PA6) having a basis weight of 3 g/m 2 was formed in the same manner as in Example 1.
  • This layer was connected to a textile carrier layer consisting of a cotton woven fabric having a basis weight of 45 g/m 2 by means of polyurethane (PU), which was applied to the textile carrier layer in an amount of 10 g/m 2
  • PU polyurethane
  • a fluorinated carbohydrate-based hydrophobic agent was applied to the carrier layer by plasma spraying with low pressure vacuum plasma of a roll-to-roll type at a winding speed of 1 m/min.
  • a two-layer textile composite was formed according to the invention having permeability 2.98 l/m 2 /s, vapor permeability Ret 3.5 Pa.m .W "1 a hydrostatic resistance of 17,320 mm of water column.
  • a planar layer of nanofibers of polyamide 6 (PA6) having a basis weight of 3 g/m 2 was formed in the same manner as in Example 1.
  • This layer was connected to a textile carrier layer consisting of a polyester (PL) woven fabric having a basis weight of 45 g/m 2 by means of polyurethane (PU), which was applied to textile carrier layer in an amount of 10 g/m 2 .
  • PU polyurethane
  • PU polyurethane
  • a two-layer textile composite according to the invention was formed, having a permeability of 4.11 l/m 2 /s, vapor permeability Ret 2.0 Pa.m 2 .W “1 and hydrostatic resistance of 5000 mm of water column.
  • This textile composite was afterwards washed 3 times in a conventional manner in a washing machine, whereby its parameters were maintained to a considerable extent, being still sufficient for outdoor use: permeability was 4.11 l/m 2 /s, vapor permeability Ret was 1.9 Pa.m 2 .W 1 and hydrostatic resistance was 4,000 mm of water column.
  • a planar layer of nanofibers of polyamide 6 (PA6) having a basis weight of 4 g/m 2 was formed on a device for producing polymeric nanofibers on the basis of centrifugal spinning.
  • This layer was connected to a textile carrier layer consisting of a polyamide (PA) woven fabric having a basis weight of 45 g/m 2 by means of polyurethane (PU), which was applied to the textile carrier layer in an amount of 10 g/m 2 .
  • PU polyurethane
  • a fluorinated carbohydrate-based hydrophobic agent was applied to the carrier layer by plasma spraying with low pressure vacuum plasma of a roll-to-roll type at a winding speed of 1 m/min.
  • a two-layer textile composite was formed according to the invention, having a final permeability of 3.25 l/m 2 /s, vapor permeability of Ret 4.3 Pa.m 2 .W " 1 and hydrostatic resistance of 4,500 mm of water column.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
PCT/CZ2016/000026 2015-03-09 2016-03-09 Method for producing a textile composite, especially for outdoor applications, which contains at least one layer of polymeric nanofibers, and a textile composite prepared by this method WO2016141902A1 (en)

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EP3231595A1 (de) 2016-04-14 2017-10-18 Sefar AG Komposit und verfahren zum herstellen eines komposits für eine akustische komponente
EP3366362A1 (en) 2017-02-23 2018-08-29 Sefar AG A protective vent and method for producing a protective vent
WO2019215295A1 (de) * 2018-05-09 2019-11-14 Nakladal Rastislav Bandage und verwendung einer bandage zur kühlung von körperteilen
WO2021009095A1 (de) * 2019-07-15 2021-01-21 Norma Germany Gmbh Fluidleitung mit einem rohr
EP4215356A1 (en) * 2022-01-21 2023-07-26 Fundación Tecnalia Research & Innovation Laminated composite structure having printed functionalities

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EP3231595A1 (de) 2016-04-14 2017-10-18 Sefar AG Komposit und verfahren zum herstellen eines komposits für eine akustische komponente
EP3348393A1 (de) 2016-04-14 2018-07-18 Sefar AG Kompositmembran und verfahren zum herstellen einer kompositmembran
EP3366362A1 (en) 2017-02-23 2018-08-29 Sefar AG A protective vent and method for producing a protective vent
WO2019215295A1 (de) * 2018-05-09 2019-11-14 Nakladal Rastislav Bandage und verwendung einer bandage zur kühlung von körperteilen
WO2021009095A1 (de) * 2019-07-15 2021-01-21 Norma Germany Gmbh Fluidleitung mit einem rohr
EP4215356A1 (en) * 2022-01-21 2023-07-26 Fundación Tecnalia Research & Innovation Laminated composite structure having printed functionalities
WO2023139213A1 (en) * 2022-01-21 2023-07-27 Fundación Tecnalia Research & Innovation Laminated composite structure having printed functionalities

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