Prototype of Alternative Masks to Kn95 Mouth Covers

Various types of materials and components have been synthesized to assemble respirator-type masks as an alternative to the (stable and durable) KN-95 face mask. Injection-type 3D printers were used to manufacture the components, where the thickness and height of the injection varied, printing time, clamping method and infill density. The morphological analysis (superficial and cross-sectional) was performed by scanning electron microscopy. The degree of filtration of the filters and the mask was determined by a physical test that simulated a human sneeze. The biological characterization was carried out in situ using culture media and observing the growth of pathogenic organisms. The results show the effectiveness of a mask like KN-95 in both biological and physical aspects, as well as greater durability and respect for the environment.