EP3068248B1 - Waterfroof apertured surfaces or materials using nanoparticle hydrophobic treatments - Google Patents
Waterfroof apertured surfaces or materials using nanoparticle hydrophobic treatments Download PDFInfo
- Publication number
- EP3068248B1 EP3068248B1 EP14860945.6A EP14860945A EP3068248B1 EP 3068248 B1 EP3068248 B1 EP 3068248B1 EP 14860945 A EP14860945 A EP 14860945A EP 3068248 B1 EP3068248 B1 EP 3068248B1
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- European Patent Office
- Prior art keywords
- apertures
- hydrophobic
- intersecting members
- materials
- members
- Prior art date
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- 239000000463 material Substances 0.000 title claims description 67
- 230000002209 hydrophobic effect Effects 0.000 title claims description 52
- 239000002105 nanoparticle Substances 0.000 title claims description 20
- 238000011282 treatment Methods 0.000 title description 13
- 239000000203 mixture Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 230000003075 superhydrophobic effect Effects 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 14
- 238000000576 coating method Methods 0.000 description 8
- 238000004078 waterproofing Methods 0.000 description 7
- 239000004744 fabric Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 241000293001 Oxytropis besseyi Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D9/00—Open-work fabrics
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B1/00—Footwear characterised by the material
- A43B1/02—Footwear characterised by the material made of fibres or fabrics made therefrom
- A43B1/04—Footwear characterised by the material made of fibres or fabrics made therefrom braided, knotted, knitted or crocheted
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0205—Uppers; Boot legs characterised by the material
- A43B23/0215—Plastics or artificial leather
- A43B23/022—Plastics or artificial leather with waterproof breathable membranes
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
- A43C9/00—Laces; Laces in general for garments made of textiles, leather, or plastics
-
- 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
- D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
- D06M23/08—Processes in which the treating agent is applied in powder or granular form
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/02—Moisture-responsive characteristics
- D10B2401/021—Moisture-responsive characteristics hydrophobic
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2501/00—Wearing apparel
- D10B2501/04—Outerwear; Protective garments
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
- Y10T442/102—Woven scrim
- Y10T442/172—Coated or impregnated
- Y10T442/174—Including particulate material other than fiber in coating or impregnation
Definitions
- This application relates generally to the field of waterproofing, and more particularly to the field of waterproofing normally permeable apertured surfaces or materials, and even more particularly to the field of waterproofing materials using nanotechnology coatings or chemical compositions and treatments.
- hydrophobic is used for surfaces having water contact angels greater than about 120 degrees
- superhydrophobic is used for surfaces having water contact angles of greater than about 150 degrees.
- the nanoparticle technology often provides oleophobic and other nonaqueous liquid barriers as well as creating a hydrophobic barrier.
- the invention comprises a method of providing waterproof apertured materials or surfaces using hydrophobic nanoparticle compositions and treatments, and preferably superhydrophobic compositions and treatments, and the materials or surfaces resulting therefrom, wherein apertures of a size that would normally render the surface or material water-permeable may be provided in the surface or material, and further wherein intrusive or breeching members, such as stitching threads, laces, strings, shoestrings or the like, may pass through a waterproof surface or material without reducing the impermeability to water.
- the method comprises determining the extent of the hydrophobic field that extends beyond the physical edge of a particular treated material to determine the allowable size of the aperture, such that the extended hydrophobic field present on the material surrounding the aperture will be sufficient to prevent surface wetting and water permeability by fully overlapping the aperture or by presenting a reduced area effective aperture that is small enough to preclude passage of water.
- the invention embodies a method of manufacturing an apertured waterproof mesh material comprised of intersecting members, the method comprising the steps of treating said intersecting members with a nanoparticle hydrophobic or superhydrophobic composition to create a hydrophobic field extending beyond said intersecting members; determining the extent of said hydrophobic field; interweaving intersecting members to form a mesh material having apertures wider than the width of each of said intersecting members, such that said hydrophobic field extends a sufficient distance into said apertures to preclude passage of water through said apertures.
- the invention embodies an apertured waterproof mesh material produced by the above method.
- the breeching member is first treated with a nanoparticle hydrophobic composition, such that wicking through the breeching member is precluded and the aperture is effectively blocked by the hydrophobic field, thereby maintaining liquid impermeability of the waterproof material.
- the embodiments of the invention disclose a method of manufacturing an apertured mesh material composed of intersecting members defining apertures of sufficient size to be permeable to water, and treating said intersecting members before or after the step of intersecting the members with a nanoparticle hydrophobic, including superhydrophobic, composition that creates a hydrophobic field extending beyond the intersecting members and across and into the apertures, whereby the overlapping or adjacent hydrophobic fields preclude passage of water through said normally permeable apertures.
- the term “mesh” or “mesh material” shall refer to and include a material, such as a fabric, screen or the like, composed of intersecting elongated members, such as threads, yarns, strings, wires, cables, rods or the like.
- hydrophobic or superhydrophobic compositions and treatments suitable for this invention shall include but not be limited to the compositions and treatments disclosed in U.S Patent Publication Nos. 2013/0109261 , 2012/0009396 , 2010/0314575 , 2012/0045954 , and 2006/0029808 , and also in U.S. Patent Nos.
- an apertured mesh material or surface 10 is manufactured by interweaving a plurality of intersecting members 11, such as for example thread members combing to create a fabric.
- the intersecting members 11, and therefore the apertured mesh material 10 as well, is treated with a nanoparticle hydrophobic composition through either a coating process or an absorption process.
- intersecting members 11 may be treated with a nanoparticle hydrophobic composition sold under the brand name ULTRA EVER DRY.
- the intersecting members 11 may be treated prior to the step of intersecting the members 11 to form the mesh material 10, or the intersecting members 11 may be inter woven together first to form the apertured material 10 and then treated.
- the treatment step does not physically block any portions of or reduce the actual size of the apertures 13.
- the intersecting members 11 are interwoven to produce apertures 13 of a size that are permeable to water. More preferably, the apertures 13, which are generally square or rectangular in configuration, have width dimensions greater than the cross-sectional widths of the intersecting members 11, i.e., greater than the diameters of generally cylindrical intersecting members 11 for example. Apertures of such size are typically provided in mesh materials 10 that are designed to permit significant flow of air through the mesh material 10.
- hydrophobic field 12 (taken herein to include superhydrophobic fields as well) that extends beyond the actual physical edges of each of the intersecting members 11.
- the extent of the extended hydrophobic field 12 must be measured and known, as it is this extent that determines the maximum permissible size for an aperture 13.
- the combination of the hydrophobic fields 12 associated with the portions of the intersecting members 11 defining an aperture 13 will combine, either because of overlapping or being sufficiently adjacent, to create a hydrophobic barrier either fully across the aperture 13 or sufficiently across the aperture 13 to create an effective aperture 14 sufficiently small in dimensions so as to preclude passage of water through the aperture 13, thereby producing a mesh material that is liquid impermeable.
- the extent of the hydrophobic field 12 will vary dependent upon the material of composition of the intersecting members 11 and the strength of the particular nanoparticle hydrophobic or superhydrophobic composition chosen.
- the hydrophobic can be measured for a particular intersecting member 11 can be measured by treating the intersecting member 11 and then varying the size of the interwoven aperture 13 to determine the maximum allowable size for the aperture 13 to remain waterproof.
- the method thus comprises determining the extent of the hydrophobic field 12 that extends beyond the physical edge of a particular treated intersecting member 11 to determine the allowable maximum size of the aperture 13, such that the extended hydrophobic field 12 extending from the intersecting members 11 surrounding the aperture 13 will be sufficient to prevent surface wetting and water permeability by fully overlapping and extending across the aperture 13 or by extending sufficiently into the aperture 13 to create an effective aperture 14 of reduced area that is inherently small enough to preclude passage of water.
- an aperture 13 may be present in a waterproof material 16 for the purpose of receiving a breeching or member 15.
- the material 16 which may be naturally liquid impermeable or treated as discussed or referenced above, the breeching member 15 passing through either a pre-made hole or bore, such as a shoelace, tie or string passing through a pre-cut hole or a grommet in a leather material, or a hole or bore made during construction, such as a stitching thread passing through a fabric.
- a pre-made hole or bore such as a shoelace, tie or string passing through a pre-cut hole or a grommet in a leather material, or a hole or bore made during construction, such as a stitching thread passing through a fabric.
- the presence of the breeching member 15 in the aperture 13 may render the material 16 permeable to liquids, especially if the breeching member 15 is composed of a material susceptible to wicking, such as a shoelace or thread.
- the breeching member 15 is treated with a nanoparticle hydrophobic or superhydrophobic composition that creates a hydrophobic field 12, as shown in Figure 2 , such that the combination of the nanoparticle hydrophobic or superhydrophobic treatment and the hydrophobic field 12 preclude passage of liquid through the aperture 13 whether by wicking or capillary effect. More preferably, the material 16 is also treated with the nanoparticle hydrophobic or superhydrophobic composition such that the hydrophobic fields 12 will overlap to better seal the aperture 13.
- nanoparticle hydrophobic or superhydrophobic treatment and composition have been used herein, it is to be understood that some of the nanoparticle hydrophobic or superhydrophobic treatments and compositions will also render the treated material impermeable to almost all liquids and oils, such that the effect is hydrophobic, liquid-phobic and oleophobic.
- the allowable presence of apertures in the liquid impermeable material whether the apertures are present due to weaving manufacture, needling, apertures inherent in the material, apertures required for functionality of the object (e.g., a shoe), etc., enables surfaces, materials, coverings, garments or the like to be created, for example, that allow air passage through the material while maintaining impermeability.
- Such materials can be utilized for normal or protective clothing, shoes, covers, tents, canopies, umbrellas, etc.
- the invention also provides such materials that may be termed "self-cleaning", in that the material is not susceptible to common liquid stains and is more easily cleaned of solid or particulate matter. Most preferably even the inherently waterproof materials are treated so as to be hydrophobic.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Laminated Bodies (AREA)
Description
- This application relates generally to the field of waterproofing, and more particularly to the field of waterproofing normally permeable apertured surfaces or materials, and even more particularly to the field of waterproofing materials using nanotechnology coatings or chemical compositions and treatments.
- Many common materials are not waterproof, either because their material of composition absorbs liquids or because of apertures present in the material that are of sufficient size to allow penetration of water or other liquids. Some materials, such as common woven fabrics for example, are often composed of materials which absorb liquids and which contain apertures as a result of the weaving process. It has long been known to treat such materials with waterproofing materials, such as for example waxes, polymer coatings or PTFE-based SCOTCHGARD brand water repellent. Recently, advances in nanotechnology have produced coatings or solutions which impart extreme hydrophobic properties to the materials to which they are applied by providing specialized nanoparticles in the coatings or solutions. The term hydrophobic is used for surfaces having water contact angels greater than about 120 degrees, and the term superhydrophobic is used for surfaces having water contact angles of greater than about 150 degrees. The nanoparticle technology often provides oleophobic and other nonaqueous liquid barriers as well as creating a hydrophobic barrier.
- Examples of various hydrophobic and superhydrophobic compositions and treatment methodologies are provided in
U.S Patent Publication Nos. 2013/0109261 ,2012/0009396 ,2010/0314575 ,2012/0045954 , and2006/0029808 , and also inU.S. Patent Nos. 8,007,638 ,6,103,379 ,6,645,569 ,6,743,467 ,7,985,451 ,8,187,707 ,8,202,614 ,7,998,554 ,7,989,619 ,5,042,991 ,8,361,176 ,8,258,206 and6,723,378 , and also in International Publication No.WO2013/058843 as well as in GermanPatent application DE 10 2010 028 662 A1 . An example of a commercially available superhydrophobic coating is sold under the brand ULTRA EVER DRY by UltraTech International, Inc. - In materials such as woven fabrics having relatively small apertures between the intersecting threads or yarns, i.e., the apertures are smaller than the widths of the intersecting members, it has proven relatively easy to create waterproof surfaces using known waterproofing technology. Problems will arise however when the apertures are excessively large in relation to the diameters of the threads. Similar problems occur in screens or meshes, or materials that have inherent apertures that are of sufficient size to allow water passage directly or by wicking through the material. Another problem arises due to intrusion of connecting members or the like passing through the material, such as occurs for example with stitching or lacing passed through fabrics or leather.
- It is an object of this invention to provide waterproof apertured materials or surfaces composed of intersecting members and a method for waterproofing such apertured materials or surfaces, using nanoparticle hydrophobic coatings or treatments, wherein the apertures defined by intersecting members are of greater width than the individual intersecting members. It is a further object to provide such waterproof materials or surfaces wherein the aperture size is sufficient such that the material or surface only minimally interferes with the passage of air or wind through the material or surface.
- It is a further object to provide a method for waterproofing materials or surfaces having intrusive or breeching members passing through the waterproof material or surface, wherein the intrusive members are treated with a nanoparticle hydrophobic coating or treatment.
- The invention comprises a method of providing waterproof apertured materials or surfaces using hydrophobic nanoparticle compositions and treatments, and preferably superhydrophobic compositions and treatments, and the materials or surfaces resulting therefrom, wherein apertures of a size that would normally render the surface or material water-permeable may be provided in the surface or material, and further wherein intrusive or breeching members, such as stitching threads, laces, strings, shoestrings or the like, may pass through a waterproof surface or material without reducing the impermeability to water.
- For open or unfilled apertures, the method comprises determining the extent of the hydrophobic field that extends beyond the physical edge of a particular treated material to determine the allowable size of the aperture, such that the extended hydrophobic field present on the material surrounding the aperture will be sufficient to prevent surface wetting and water permeability by fully overlapping the aperture or by presenting a reduced area effective aperture that is small enough to preclude passage of water.
- Expressed in other terms, the invention embodies a method of manufacturing an apertured waterproof mesh material comprised of intersecting members, the method comprising the steps of treating said intersecting members with a nanoparticle hydrophobic or superhydrophobic composition to create a hydrophobic field extending beyond said intersecting members; determining the extent of said hydrophobic field; interweaving intersecting members to form a mesh material having apertures wider than the width of each of said intersecting members, such that said hydrophobic field extends a sufficient distance into said apertures to preclude passage of water through said apertures.
- Additionally, it is a method wherein said intersecting members are treated prior to said interweaving step; or wherein said intersecting members are treated after said interweaving step; and/or wherein said step of interweaving intersecting members produces apertures of a size such that said hydrophobic fields of said intersecting members adjacent said apertures extend completely across said apertures; and/or wherein said step of interweaving intersecting members produces apertures of a size such that said hydrophobic fields of said intersecting members adjacent said apertures extend partially into said apertures a sufficient distance to define effective apertures that preclude passage of water through said apertures.
- Also, the invention embodies an apertured waterproof mesh material produced by the above method.
- Not according to the invention, for filled apertures extending through waterproof materials that receive breeching members, such as for example apertures produced by stitching or to receive a lace or similar elongated member, the breeching member is first treated with a nanoparticle hydrophobic composition, such that wicking through the breeching member is precluded and the aperture is effectively blocked by the hydrophobic field, thereby maintaining liquid impermeability of the waterproof material.
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Figure 1 is an illustration of an apertured material composed of intersecting members having been treated to produce a hydrophobic surface and showing the extended hydrophobic field sufficient to maintain liquid impermeability. -
Figure 2 illustrates a breeching member extending through a waterproof material. - With reference to the drawings, embodiments of the invention will now be described in detail. In general, the embodiments of the invention disclose a method of manufacturing an apertured mesh material composed of intersecting members defining apertures of sufficient size to be permeable to water, and treating said intersecting members before or after the step of intersecting the members with a nanoparticle hydrophobic, including superhydrophobic, composition that creates a hydrophobic field extending beyond the intersecting members and across and into the apertures, whereby the overlapping or adjacent hydrophobic fields preclude passage of water through said normally permeable apertures. For purposes of this disclosure, the term "mesh" or "mesh material" shall refer to and include a material, such as a fabric, screen or the like, composed of intersecting elongated members, such as threads, yarns, strings, wires, cables, rods or the like.
- For purposes of this disclosure, hydrophobic or superhydrophobic compositions and treatments suitable for this invention shall include but not be limited to the compositions and treatments disclosed in
U.S Patent Publication Nos. 2013/0109261 ,2012/0009396 ,2010/0314575 ,2012/0045954 , and2006/0029808 , and also inU.S. Patent Nos. 8,007,638 ,6,103,379 ,6,645,569 ,6,743,467 ,7,985,451 ,8,187,707 ,8,202,614 ,7,998,554 ,7,989,619 ,5,042,991 ,8,361,176 ,8,258,206 and6,723,378 , and also in International Publication No.WO2013/058843 . - As shown in
Figure 1 , an apertured mesh material orsurface 10 is manufactured by interweaving a plurality of intersectingmembers 11, such as for example thread members combing to create a fabric. The intersectingmembers 11, and therefore theapertured mesh material 10 as well, is treated with a nanoparticle hydrophobic composition through either a coating process or an absorption process. For example, intersectingmembers 11 may be treated with a nanoparticle hydrophobic composition sold under the brand name ULTRA EVER DRY. The intersectingmembers 11 may be treated prior to the step of intersecting themembers 11 to form themesh material 10, or the intersectingmembers 11 may be inter woven together first to form the aperturedmaterial 10 and then treated. The treatment step does not physically block any portions of or reduce the actual size of theapertures 13. - The intersecting
members 11 are interwoven to produceapertures 13 of a size that are permeable to water. More preferably, theapertures 13, which are generally square or rectangular in configuration, have width dimensions greater than the cross-sectional widths of the intersectingmembers 11, i.e., greater than the diameters of generally cylindrical intersectingmembers 11 for example. Apertures of such size are typically provided inmesh materials 10 that are designed to permit significant flow of air through themesh material 10. - Application of the nanoparticle hydrophobic or superhydrophobic composition to the intersecting
members 11 creates a hydrophobic field 12 (taken herein to include superhydrophobic fields as well) that extends beyond the actual physical edges of each of the intersectingmembers 11. The extent of the extendedhydrophobic field 12 must be measured and known, as it is this extent that determines the maximum permissible size for anaperture 13. Properly chosen, the combination of thehydrophobic fields 12 associated with the portions of the intersectingmembers 11 defining anaperture 13 will combine, either because of overlapping or being sufficiently adjacent, to create a hydrophobic barrier either fully across theaperture 13 or sufficiently across theaperture 13 to create an effective aperture 14 sufficiently small in dimensions so as to preclude passage of water through theaperture 13, thereby producing a mesh material that is liquid impermeable. The extent of thehydrophobic field 12 will vary dependent upon the material of composition of the intersectingmembers 11 and the strength of the particular nanoparticle hydrophobic or superhydrophobic composition chosen. The hydrophobic can be measured for a particular intersectingmember 11 can be measured by treating the intersectingmember 11 and then varying the size of theinterwoven aperture 13 to determine the maximum allowable size for theaperture 13 to remain waterproof. - In this manner, mesh materials such as fabrics, screens or the like may be manufactured that are water impermeable while still allowing passage of air through the
apertures 13. The method thus comprises determining the extent of thehydrophobic field 12 that extends beyond the physical edge of a particular treated intersectingmember 11 to determine the allowable maximum size of theaperture 13, such that the extendedhydrophobic field 12 extending from the intersectingmembers 11 surrounding theaperture 13 will be sufficient to prevent surface wetting and water permeability by fully overlapping and extending across theaperture 13 or by extending sufficiently into theaperture 13 to create an effective aperture 14 of reduced area that is inherently small enough to preclude passage of water. - In a second example (not according to the invention), an
aperture 13 may be present in awaterproof material 16 for the purpose of receiving a breeching ormember 15. Thematerial 16 which may be naturally liquid impermeable or treated as discussed or referenced above, the breechingmember 15 passing through either a pre-made hole or bore, such as a shoelace, tie or string passing through a pre-cut hole or a grommet in a leather material, or a hole or bore made during construction, such as a stitching thread passing through a fabric. In many instances the presence of thebreeching member 15 in theaperture 13 may render thematerial 16 permeable to liquids, especially if the breechingmember 15 is composed of a material susceptible to wicking, such as a shoelace or thread. To maintain liquid impermeability, the breechingmember 15 is treated with a nanoparticle hydrophobic or superhydrophobic composition that creates ahydrophobic field 12, as shown inFigure 2 , such that the combination of the nanoparticle hydrophobic or superhydrophobic treatment and thehydrophobic field 12 preclude passage of liquid through theaperture 13 whether by wicking or capillary effect. More preferably, thematerial 16 is also treated with the nanoparticle hydrophobic or superhydrophobic composition such that thehydrophobic fields 12 will overlap to better seal theaperture 13. - While the terms "nanoparticle hydrophobic or superhydrophobic treatment and composition" have been used herein, it is to be understood that some of the nanoparticle hydrophobic or superhydrophobic treatments and compositions will also render the treated material impermeable to almost all liquids and oils, such that the effect is hydrophobic, liquid-phobic and oleophobic. The allowable presence of apertures in the liquid impermeable material, whether the apertures are present due to weaving manufacture, needling, apertures inherent in the material, apertures required for functionality of the object (e.g., a shoe), etc., enables surfaces, materials, coverings, garments or the like to be created, for example, that allow air passage through the material while maintaining impermeability. Such materials can be utilized for normal or protective clothing, shoes, covers, tents, canopies, umbrellas, etc. In addition to providing materials that are not wetted, the invention also provides such materials that may be termed "self-cleaning", in that the material is not susceptible to common liquid stains and is more easily cleaned of solid or particulate matter. Most preferably even the inherently waterproof materials are treated so as to be hydrophobic.
- It is contemplated that equivalents and substitutions for certain elements set forth above may be obvious to those of skill in the art, and therefore the true scope and definition of the invention is to be as set forth in the following claims. The examples and embodiments described above and in the drawings are not meant to be limiting.
Claims (5)
- A method of manufacturing an apertured waterproof mesh material (10) comprised of intersecting members (11), the method comprising the steps of:treating said intersecting members (11) with a nanoparticle hydrophobic or superhydrophobic composition to create a hydrophobic field (12) extending beyond said intersecting members (11);the method being characterised by determining the extent of said hydrophobic field (12);interweaving intersecting members (11) to form a mesh material (10) having apertures (13) wider than the width of each of said intersecting members (11), such that said hydrophobic field (12) extends a sufficient distance into said apertures (13) to preclude passage of water through said apertures (13).
- The method of claim 1, wherein said intersecting members (11) are treated after said interweaving step.
- The method of claim 1, wherein said step of interweaving intersecting members (11) produces apertures (13) of a size such that said hydrophobic fields (12) of said intersecting members (11) adjacent said apertures (13) extend partially into said apertures (13) a sufficient distance to define effective apertures (14) that preclude passage of water through said apertures (13).
- An apertured waterproof mesh material (10) produced by the process of claim 1.
- The method of claim 1, wherein said step of treating said intersecting members (11) with said nanoparticle hydrophobic or superhydrophobic composition to create a hydrophobic field (12) does not physically reduce the size of or block said apertures (13).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19203691.1A EP3626874A1 (en) | 2013-11-11 | 2014-11-11 | Waterproof apertured surfaces or materials using nanoparticle hydrophobic treatments |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361902441P | 2013-11-11 | 2013-11-11 | |
PCT/US2014/065021 WO2015070218A2 (en) | 2013-11-11 | 2014-11-11 | Waterfroof apertured surfaces or materials using nanoparticle hydrophobic treatments |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19203691.1A Division EP3626874A1 (en) | 2013-11-11 | 2014-11-11 | Waterproof apertured surfaces or materials using nanoparticle hydrophobic treatments |
EP19203691.1A Division-Into EP3626874A1 (en) | 2013-11-11 | 2014-11-11 | Waterproof apertured surfaces or materials using nanoparticle hydrophobic treatments |
Publications (3)
Publication Number | Publication Date |
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EP3068248A2 EP3068248A2 (en) | 2016-09-21 |
EP3068248A4 EP3068248A4 (en) | 2017-08-02 |
EP3068248B1 true EP3068248B1 (en) | 2019-11-27 |
Family
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP14860945.6A Active EP3068248B1 (en) | 2013-11-11 | 2014-11-11 | Waterfroof apertured surfaces or materials using nanoparticle hydrophobic treatments |
EP19203691.1A Withdrawn EP3626874A1 (en) | 2013-11-11 | 2014-11-11 | Waterproof apertured surfaces or materials using nanoparticle hydrophobic treatments |
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EP19203691.1A Withdrawn EP3626874A1 (en) | 2013-11-11 | 2014-11-11 | Waterproof apertured surfaces or materials using nanoparticle hydrophobic treatments |
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EP (2) | EP3068248B1 (en) |
WO (1) | WO2015070218A2 (en) |
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KR20180095924A (en) * | 2015-12-23 | 2018-08-28 | 라이니쉐 프리드리히-빌헬름스-유니베르지탯트 본 | Lattice structure for stable gas retention under liquid |
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US6103379A (en) | 1994-10-06 | 2000-08-15 | Bar-Ilan University | Process for the preparation of microspheres and microspheres made thereby |
AUPQ234599A0 (en) | 1999-08-20 | 1999-09-16 | Lamb, Robert Norman | Hydrophobic material |
CA2433059C (en) | 2001-01-30 | 2009-05-12 | The Procter & Gamble Company | Coating compositions for modifying surfaces |
US6493910B1 (en) * | 2001-05-18 | 2002-12-17 | Delphi Oracle Corp. | Shoelace with enhanced knot retention and method of manufacture |
US6723378B2 (en) * | 2001-10-25 | 2004-04-20 | The Regents Of The University Of California | Fibers and fabrics with insulating, water-proofing, and flame-resistant properties |
US7862624B2 (en) * | 2004-04-06 | 2011-01-04 | Bao Tran | Nano-particles on fabric or textile |
US7998554B2 (en) * | 2004-07-06 | 2011-08-16 | Bridgestone Corporation | Hydrophobic surfaces with nanoparticles |
GB2416781A (en) * | 2004-08-04 | 2006-02-08 | Lightex Ltd | Breathable fabric |
US20060029808A1 (en) | 2004-08-06 | 2006-02-09 | Lei Zhai | Superhydrophobic coatings |
IL165219A (en) * | 2004-11-15 | 2008-12-29 | Delta Galil Ind Ltd | Moisture-management in hydrophilic fibers |
GB0425691D0 (en) * | 2004-11-23 | 2004-12-22 | Hepworth David G | Improved biocomposite material |
DE102004062740A1 (en) * | 2004-12-27 | 2006-07-13 | Degussa Ag | Process for increasing the water-tightness of textile fabrics, textile fabrics treated in this way and their use |
WO2006132694A2 (en) | 2005-04-01 | 2006-12-14 | Clemson University | Ultrahydrophobic substrates |
EP1726609A1 (en) | 2005-05-25 | 2006-11-29 | DSM IP Assets B.V. | Hydrophobic coating |
GB2427868A (en) | 2005-07-04 | 2007-01-10 | Samuel Michael Baker | Cellulosic products having oleophobic and hydrophobic properties |
US7989619B2 (en) | 2005-07-14 | 2011-08-02 | Innovative Surface Technoloiges, Inc. | Nanotextured surfaces |
US8258206B2 (en) | 2006-01-30 | 2012-09-04 | Ashland Licensing And Intellectual Property, Llc | Hydrophobic coating compositions for drag reduction |
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GB2452568B (en) * | 2007-09-10 | 2010-09-01 | Gore W L & Ass Gmbh | Fabric and fabric laminate |
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AT11184U1 (en) * | 2008-12-23 | 2010-06-15 | Schaefer Philipp | Leather articles, especially shoes and methods of making them |
US20100314575A1 (en) | 2009-06-16 | 2010-12-16 | Di Gao | Anti-icing superhydrophobic coatings |
DE102010028662A1 (en) * | 2010-05-06 | 2011-11-10 | Leibniz-Institut Für Polymerforschung Dresden E.V. | Functionalizing textile fabric useful as surgical product in medicine field, comprises filling pores of mesostructure of textile fabric made of fibers or fiber bundles, with particles exhibiting specific average particle size |
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US9708755B2 (en) | 2011-07-05 | 2017-07-18 | Luna Innovations Incorporated | Fluid-resistant textile fabrics and methods |
US9354326B2 (en) * | 2013-07-02 | 2016-05-31 | Carestream Health, Inc. | Liquid resistant digital detector |
-
2014
- 2014-11-11 WO PCT/US2014/065021 patent/WO2015070218A2/en active Application Filing
- 2014-11-11 EP EP14860945.6A patent/EP3068248B1/en active Active
- 2014-11-11 EP EP19203691.1A patent/EP3626874A1/en not_active Withdrawn
- 2014-11-11 US US14/538,336 patent/US20150133013A1/en not_active Abandoned
-
2018
- 2018-04-19 US US15/957,259 patent/US20180282913A1/en not_active Abandoned
- 2018-04-19 US US15/957,217 patent/US20180237963A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
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None * |
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WO2015070218A3 (en) | 2015-11-05 |
EP3068248A4 (en) | 2017-08-02 |
EP3626874A1 (en) | 2020-03-25 |
US20150133013A1 (en) | 2015-05-14 |
WO2015070218A2 (en) | 2015-05-14 |
US20180282913A1 (en) | 2018-10-04 |
EP3068248A2 (en) | 2016-09-21 |
US20180237963A1 (en) | 2018-08-23 |
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