Patent ID: 11865810
Assignee: LIFELABS DESIGN, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 12:
13. A clothing fabric comprising:
a first layer comprising a first polyolefin fiber and first particulate fillers dispersed within the first polyolefin fiber, the first layer having a transmittance of infrared radiation at a wavelength of 9.5 μm of at least 38 percent;
a second layer comprising a first porous polyolefin membrane and a first porous metallic film on an inner surface of the first porous polyolefin membrane, wherein the first porous polyolefin membrane has an outer surface coupled to an inner surface of the first layer and has an emissivity of infrared radiation at a wavelength of 9.5 μm on the outer surface of the first porous polyolefin membrane of 5-25percent; wherein the first porous polyolefin membrane has a thickness in a range of 5 μm to 500 μm; and wherein the first porous metallic film has a reflectivity of infrared radiation at a wavelength of 9.5 μm of at least 40 percent;
a third layer coupled to an inner surface of the first porous metallic film, the third layer comprising a fabric selected from a group consisting of cotton, polyester, silk, wool, down, rayon, linen, nylon, hemp, and mixtures thereof;
a fourth layer comprising a second porous polyolefin membrane and a second porous metallic film on an outer surface of the second porous polyolefin membrane, wherein the second porous metallic film is further coupled to an inner surface of the third layer and has a reflectivity of infrared radiation at a wavelength of 9.5 μm of at least 40 percent; and wherein the second porous polyolefin membrane has an emissivity of infrared radiation at a wavelength of 9.5 μm on the outer surface of the second porous polyolefin membrane of 5-25 percent; wherein the second porous polyolefin membrane has a thickness in a range of 5 μm to 500 μm; and
a fifth layer coupled to an inner surface of the second porous polyolefin membrane, wherein the fifth layer comprises a second polyolefin fiber and second particulate fillers dispersed within the second polyolefin fiber and has a transmittance of infrared radiation at a wavelength of 9.5 μm of at least 38 percent,
wherein the first porous polyolefin membrane is sandwiched between and in contact with the first porous metallic film and the first layer;
wherein the first porous metallic film is sandwiched between and in contact with the first porous polyolefin membrane and the third layer and comprises an interconnected-mesh structure; and
wherein the first and second 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%.