Description

The "Orikamo" mask is based on the features of commercial “duckbill” style respirators, specifically to: 1) fit tightly underneath the chin, and 2) provide extra interior space for handling respiratory moisture and maximizing airflow. As a result, despite having two layers of highly restrictive filter material, this breathable mask is comfortable even when worn for hours at a stretch. The mask is also designed to be readily assembled within seconds, with no special equipment. All that's needed is surgical wrap (and scissors to cut it), the 3D-printed plastic clips, some metal strips or wire for the nosepiece, and some tape. "Orikamo" combines the previously shared concepts of 1) an easy-to-assemble fabric mask using 3D-printed parts https://3dprint.nih.gov/discover/3dpx-013690 (https://3dprint.nih.gov/discover/3dpx-013690), and 2) fabric clips for gripping the mask material and attaching ties https://cults3d.com/en/3d-model/home/simple-clip-for-face-mask-corona-virus-covid-19-protection (https://cults3d.com/en/3d-model/home/simple-clip-for-face-mask-corona-virus-covid-19-protection). I remixed these idea and added my own insight into the benefits of the duckbill shape in maximizing surface area and preventing moisture build up -- in contrast to the more prevalent "accordion" fold masks in which fabric is bunched up directly in front of your mouth and nose. I also made the fabric attachment points more robust and directed the ties in the best position for the duckbill's fit. Complete directions for folding the fabric and assembling the mask are provided in the supplemental information.