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CN-121976386-A - Multispectral cool fabric

CN121976386ACN 121976386 ACN121976386 ACN 121976386ACN-121976386-A

Abstract

Embodiments of the present disclosure relate generally to base fabrics with designed performance characteristics for body gear and other articles of commerce, and in particular to technical equipment (e.g., garments) that utilize multispectral cooling components bonded to an outward-facing surface of the base fabric.

Inventors

  • Michael Woody E. Blackford
  • J.T. Moji
  • H. Beckham

Assignees

  • 哥伦比亚运动休闲北美公司

Dates

Publication Date
20260505
Application Date
20180109
Priority Date
20170109

Claims (15)

  1. 1.A multispectral cooling material suitable for use in a body-worn article, wherein the multispectral cooling material comprises: a base fabric having an outwardly facing surface and air permeability, and One or more multispectral cooling components bonded to the outwardly-facing surface of the base fabric, the one or more multispectral cooling components comprising a discontinuous array of foil components having a refractive index of from 2.0 to 2.75, the foil components comprising metal oxide particles, the one or more multispectral cooling components being arranged and spaced such that a portion of the base fabric is uncovered and such that the base fabric is capable of retaining at least a portion of the gas permeability characteristics, the multispectral cooling components having a surface coverage area of from 15% to 90% of the outwardly-facing surface of the base fabric in at least one 1 inch x 1 inch cell, Wherein the multispectral cooling material has a greater than 50% increase in solar energy reflected in the wavelength range of 0.25 μm to 0.78 μm compared to the base fabric alone and a greater than 20% decrease in solar energy transmitted in the wavelength range of 0.25 μm to 2.5 μm compared to the base fabric alone.
  2. 2. The multispectral cooling material of claim 1, wherein the multispectral cooling material increases solar energy reflected in the wavelength range of 0.25 μιη to 2.5 μιη by more than 10% compared to the base fabric alone.
  3. 3. The multispectral cooling material of claim 1, wherein the multispectral cooling material increases solar energy reflected in the wavelength range of 0.25 μιη to 2.5 μιη by more than 30% compared to the base fabric alone.
  4. 4. The multispectral cooling material of claim 1, wherein the multispectral cooling material increases solar energy reflected in the wavelength range of 0.25 μιη to 0.78 μιη by more than 200% compared to the base fabric alone.
  5. 5. The multispectral cooling material according to claim 1, wherein the multispectral cooling material has an increase in energy radiation in the wavelength range of 5.0 μιη to 40 μιη of more than 1%, preferably more than 2%, compared to the base fabric alone.
  6. 6. The multispectral cooling material of claim 1, wherein the multispectral cooling component comprises a white colored foil.
  7. 7. The multispectral cooling material of claim 1, wherein the metal oxide comprises TiO 2 , znO, or a combination thereof.
  8. 8. The multispectral cooling material of claim 1, wherein a surface coverage area of the multispectral cooling component varies across different regions of the multispectral cooling material.
  9. 9. The multispectral cooling material of claim 1, wherein the metal oxide particles comprise rutile titanium dioxide crystals.
  10. 10. The multispectral cooling material of claim 1, wherein the diameter of individual multispectral cooling components is from 0.1mm to 5.0mm, and the spacing of the multispectral cooling components is from 0.5mm to 5.0mm.
  11. 11. The multispectral cooling material of any one of claims 1 to 10, wherein the foil component has a thickness of 0.1 μιη to 20.0 μιη.
  12. 12. An article of body wear, wherein the article comprises the multispectral cooling material of any one of claims 1 to 11, the material comprising: a base fabric having an outwardly facing surface and air permeability, and One or more multispectral cooling members bonded to an outwardly facing surface of the base fabric, the one or more multispectral cooling members comprising a discontinuous array of foil members having a refractive index of from 2.0 to 2.75, the foil members comprising metal oxide particles, the one or more multispectral cooling members being arranged and spaced such that a portion of the base fabric is uncovered and such that the base fabric is at least capable of retaining a portion of the gas permeability characteristics, the multispectral cooling members having a surface coverage area of from 15% to 90% of the outwardly facing surface of the base fabric in at least one 1 inch x1 inch cell, The multispectral cooling material increases the solar energy reflected in the wavelength range of 0.25 μm to 0.78 μm by more than 50% compared to the base fabric alone, and decreases the solar energy transmitted in the wavelength range of 0.25 μm to 2.5 μm by more than 20% compared to the base fabric alone.
  13. 13. The article of body wear of claim 12 wherein the multispectral cooling component comprises a white colored foil.
  14. 14. The article of body wear of claim 12 wherein the metal oxide comprises TiO 2 , znO, or combinations thereof.
  15. 15. The article of body wear according to any one of claims 12 to 14, wherein the multispectral cooling material has an increase in energy radiation in the wavelength range of 5.0 μιη to 40 μιη of more than 1% compared to the base fabric alone.

Description

Multispectral cool fabric The application is a divisional application of patent application of the application with the application date of 2018, 01, 09, 201880015742.8 (International application number of PCT/US 2018/012999) and the name of multispectral cool fabric. Cross Reference to Related Applications The present application claims priority from the prior application date of U.S. provisional application No.62/444,259, filed on 1 month 9 2017, which provisional application is incorporated herein by reference in its entirety. Technical Field Embodiments of the present disclosure relate generally to base fabrics (base fabrics) for body gear and other articles having designed performance characteristics, and in particular to professional articles (TECHNICAL GEAR) (e.g., apparel) for sports and the like) that use one or more components incorporated into the outward-facing surface of the base fabric that reflect sunlight, limit solar energy transmission, and emit human radiation. Background Functional textile materials such as wicking materials (WICKING MATERIAL) and cooling materials (cooling materials) generally take the form of uniform layers that are woven or otherwise incorporated into garments. Cooling fabrics comprising a layer of cooling material, such as superabsorbent polymers, have drawbacks, especially when incorporated into the base fabric as a continuous layer. For example, a uniform layer of polymeric material may impede the transmission of water vapor or limit the passage of air through the base fabric. In addition, such cooling materials may interfere with the desired properties of the base fabric, such as drape, texture, stretchability, and the like. Thus, the use of a layer of cooling material may interfere with the breathability (or other function) of the underlying base fabric. Drawings Embodiments of the present disclosure will be readily understood by the following detailed description in conjunction with the accompanying drawings. Embodiments of the invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings. Fig. 1A illustrates an example of a discontinuous pattern of multispectral cooling components disposed on an outward-facing surface of a base fabric, according to various embodiments. FIG. 1B is a cross-sectional view of one example of a multispectral cooling component (e.g., a dot or dot) disposed on an outward-facing surface of a base fabric, showing an example of material layering, according to various embodiments. Fig. 1C illustrates a jacket (e.g., a shirt) having a discontinuous pattern of multispectral cooling components disposed on an outward-facing surface of a base fabric, according to various embodiments. Fig. 2A-2H illustrate examples of discontinuously patterned multispectral cooling components disposed on an outwardly facing surface of a base fabric, in accordance with various embodiments. 3A-3F illustrate examples of patterned multispectral cooling components disposed on an outward-facing surface of a base fabric, according to various embodiments; Fig. 4A and 4B illustrate graphs comparing temperature versus time for various fabrics exposed to sunlight according to various embodiments, including examples of multi-spectral cooling components of discontinuous patterns disposed on an outward-facing surface of a base fabric. Data for a base fabric and the same base fabric with multispectral cooling components (solar deflector fabric (solar deflector fabric, SD)) and the same base fabric with Omni heat reflection (Omni-HEAT REFLECTIVE, OHR) are shown. Fig. 5 is a graph showing the total spectral reflectance data of solar deflector fabric (SD), omni Heat Reflection (OHR) fabric and base fabric. The data for the entire spectrum is displayed in logarithmic x-axis scale to improve visibility at small wavelengths. Fig. 6 is a graph from ASTM G173, the solar spectrum of the earth's surface. Fig. 7 is a boltzmann distribution plot of blackbody emissions at various temperatures. FIG. 8 is a solar deflector fabric (SD), omni thermal fabric (Omni-Heat fabric) and base fabric inIs a spectral reflectance measurement plot of (2). FIG. 9 is a solar deflector fabric (SD), omni-Heat fabric and base fabric inIs a graph of spectral transmittance measurements of (a). FIG. 10 is a schematic illustration of a solar deflector fabric (SD), omni-Heat fabric and base fabric in a woven fabricIs a spectral reflectance measurement plot of (2). FIG. 11 is a solar deflector fabric (SD), omni-Heat fabric and base fabric inIs a measurement of the spectral emissivity of (b). Detailed Description In the following detailed description, reference is made to the accompanying drawings which form a part hereof, and in which is shown by way of illustration embodiments in which the disclosure may be practiced. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of