US 11,865,810 B2
Radiative-heating clothing fabric with colors
Yi Cui, Stanford, CA (US); and Lili Cai, Champaign, IL (US)
Assigned to LifeLabs Design, Inc., Sunnyvale, CA (US)
Filed by LifeLabs Design, Inc., Sunnyvale, CA (US)
Filed on May 8, 2019, as Appl. No. 16/406,964.
Prior Publication US 2020/0353720 A1, Nov. 12, 2020
Int. Cl. B32B 15/085 (2006.01); B32B 27/32 (2006.01); B32B 15/14 (2006.01); B32B 15/02 (2006.01)
CPC B32B 15/085 (2013.01) [B32B 15/02 (2013.01); B32B 15/14 (2013.01); B32B 27/32 (2013.01); B32B 2305/026 (2013.01); B32B 2305/30 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/414 (2013.01); B32B 2307/416 (2013.01); B32B 2437/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A clothing fabric comprising:
an outer polyolefin layer comprising a polyolefin fiber and particulate fillers dispersed within the polyolefin fiber, the outer polyolefin layer having a transmittance of infrared radiation at a wavelength of 9.5 μm of at least 38 percent;
an intermediate layer comprising a porous polyolefin membrane and a porous metallic film on an inner surface of the porous polyolefin membrane, wherein the porous polyolefin membrane is coupled to an inner surface of the outer polyolefin layer and has an emissivity of infrared radiation at a wavelength of 9.5 μm on an outer surface of the porous polyolefin membrane of 5-25 percent; wherein the porous polyolefin membrane has a thickness in a range of 5 μm to 500 μm; and wherein the porous metallic film has a reflectivity of infrared radiation at a wavelength of 9.5 μm of at least 40 percent; and
an inner layer coupled to an inner surface of the porous metallic film, the inner layer comprising a fabric selected from a group consisting of cotton, polyester, silk, wool, down, rayon, linen, nylon, hemp, and mixtures thereof;
wherein the porous polyolefin membrane is sandwiched between and in contact with the porous metallic film and the outer polyolefin layer;
wherein the porous metallic film is sandwiched between and in contact with the porous polyolefin membrane and the inner layer;
wherein the particulate fillers have an average particle size in a range of 10 nm to 4,000 nm and have a weighted average transmittance of infrared radiation over a wavelength range of 7-14 μm of at least about 30%, and wherein the particulate fillers comprise at least one of a metalloid, a metal oxide, a metal halide, a metal sulfide, or a metal cyanide; and
wherein the porous metallic film has pores having an average pore size in a range of 10 nm to 4,000 nm and comprises an interconnected-mesh structure.