US2021130991A1PendingUtilityA1

Radiative cooling fabric and fabrication method for the same

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Assignee: EENOTECH INCPriority: Nov 6, 2019Filed: Nov 5, 2020Published: May 6, 2021
Est. expiryNov 6, 2039(~13.3 yrs left)· nominal 20-yr term from priority
Inventors:Cindy Yee Cin LauPei ZhuEric Tuscia
D10B 2331/04D10B 2331/02D10B 2321/022D10B 2321/021D03D 15/52D03D 15/43D03D 15/283D02G 3/44D02G 3/36D01F 6/60D01F 6/06D01F 6/04D01F 1/106D01F 1/06D01D 5/08D01F 1/10D03D 15/0094
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Claims

Abstract

A fabric includes one or more yarns. Each of the one or more yarns include a plurality of filaments. Each of the filaments has an average diameter in a range of 20-50 μm such that the fabric has an infrared radiation transmittance at a wavelength of 9.5 μm of at least 37%.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A fabric comprising:
 one or more yarns, each of the one or more yarns including a plurality of filaments,   wherein each of the filaments has an average diameter in a range of 20-50 μm such that the fabric has an infrared radiation (IR) transmittance at a wavelength of 9.5 μm of at least 37%.   
     
     
         2 . The fabric of  claim 1 , wherein the filaments has an average diameter in a range of 20-40 μm. 
     
     
         3 . The fabric of  claim 1 , wherein the filaments comprise one or more of polyethylene, polypropylene, or polyamide. 
     
     
         4 . The fabric of  claim 1 , wherein the fabric has a porosity in a range of 0-12%. 
     
     
         5 . The fabric of  claim 1 , wherein the one or more yarns include at least one yarn having a coating on its surface. 
     
     
         6 . The fabric of  claim 1 , wherein the one or more yarns contain dyestuff. 
     
     
         7 . The fabric of  claim 1 , wherein the one or more yarns include an ultraviolet block agent. 
     
     
         8 . The fabric of  claim 7 , wherein the ultraviolet block agent includes one or more of ZnO or TiO 2 . 
     
     
         9 . The fabric of  claim 1 , wherein the one or more yarns include ceramic filler. 
     
     
         10 . The fabric of  claim 1 , wherein each of the one or more yarns has an average diameter of at most 400 μm. 
     
     
         11 . An apparatus comprising a fabric, wherein the fabric comprises:
 one or more yarns, each of the one or more yarns including a plurality of filaments,   wherein each of the filaments has an average diameter in a range of 20-50 μm such that the fabric has an infrared radiation (IR) transmittance at a wavelength of 9.5 μm of at least 37%.   
     
     
         12 . The apparatus of  claim 11 , wherein the filaments has an average diameter in a range of 20-40 μm. 
     
     
         13 . The apparatus of  claim 11 , wherein the filaments comprise one or more of polyethylene, polypropylene, or polyamide. 
     
     
         14 . The apparatus of  claim 11 , wherein the fabric has a porosity in a range of 0-12%. 
     
     
         15 . The apparatus of  claim 11 , wherein the one or more yarns include at least one yarn having a coating on its surface. 
     
     
         16 . The apparatus of  claim 11 , wherein the one or more yarns contain dyestuff. 
     
     
         17 . The apparatus of  claim 11 , wherein the one or more yarns include an ultraviolet block agent. 
     
     
         18 . The apparatus of  claim 17 , wherein the ultraviolet block agent includes one or more of ZnO or TiO 2 . 
     
     
         19 . The apparatus of  claim 11 , wherein the one or more yarns include ceramic filler. 
     
     
         20 . The apparatus of  claim 11 , wherein each of the one or more yarns has an average diameter of at most 400 μm.

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