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Patent application: Face mask having improved comfort through cooling of microclimate

Ben Welter - Monday, March 11, 2019

U.S. patent application 20190069611 (applicant Avent Inc., Alpharetta, Georgia):

Avant mask patent drawing"A multi-layered face mask coated with discontinuous patterns of phase change material are incorporated into the face mask construction to provide for cooling of the microclimate in the dead space of the face mask. Optimized cooling is achieved by strategic placement of layers coated with a phase change material within the mask construction and the amount and density of the phase change material in contact with the temperature sensitive areas of the face, as well as areas experiencing the maximum amount of flux from exhaled breath. The shape of the mask can also be adjusted to increase skin contact with the phase change material and decrease dead space volume, which reduces the volume of warm exhaled air and can provide sufficient cooling with less phase change material."

http://www.freepatentsonline.com/20190069611.pdf

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