FlexFit Face Mask

This design has been tested and is suitable for community use, but at this time does not meet the full requirements for use in a clinical setting.

Submitted by:

Matthew Fiedler

Fri, 2020-05-01 12:39

Vertical Tabs

General Information

Model ID

3DPX-014173

Category

Labware & Devices

Device Use

Safety and Personal Protective Equipment

Keyword(s)

Quick Fabrication Flexible Flexfit Face Mask PPE

Designed by re:3D, this improved PPE Face Mask uses flexible TPU and an accordioned edge to fit to the face and provide a tight seal. The Flexfit Face Mask accepts a 2” x 2” piece of filter material to reduce the amount of filter material needed to provide protection. A PETG part holds the filter material in place. The mask accepts standard 0.25” elastic to strap to the face. This design was submitted to an America Makes Maker Challenge for PPE design for the COVID response effort.

This NIH design entry includes both a large and small version of the face mask to accommodate different faces. Both versions are compatible with the same size filter material and elastic straps, and both use the same PETG part to hold the filter material.

How to Make

Printer Technology/Material

Material Extrusion

Printer Make/Model

Any FDM/PJP/FFF Printer

Print Units

Pre- and Postprocessing Instructions

Face mask design is optimized for printing from Ninjatek Cheetah, a flexible TPU with a shore hardness of 95A.

Resolution: 0.4mm nozzle and 0.3175mm layer height
Temperatures: 230C nozzle, 60C bed
3 solid top layers, 2 solid bottom layers, and 2 perimeters. First layer height and width at 120%.
Infill: 15% rectilinear infill with 30% outline overlap
Support: 0%
60 mm/s default speed

The PETG filter part has the following settings:

Resolution: 0.4mm nozzle and 0.3175mm layer height
Temperatures: 235C nozzle, 60C bed
3 solid top layers, 2 solid bottom layers, and 2 perimeters. First layer height and width at 120%.
Infill: 15% rectilinear infill with 22% outline overlap
Support: 0%
60 mm/s default speed

For dual extrusion printers, both parts can be printed in the same print by using 2 separate processes in Simplify3D.

Attribution

Attribution Instructions

Flexfit Face Mask is a product of re:3D, Inc. https://re3d.org/

Documentation

Supplemental Documentation

FlexFit Face Mask Assembly Instructions Video

FlexFit Face Mask Design Process (Submitted to America Makes)

Reviewer Notes

This device is a general purpose face mask intended for use in the community and is not suitable for use by a healthcare professional or in a healthcare facility or environment, as described in FDA Guidance Enforcement Policy for Face Masks and Respirators During the Coronavirus Disease (COVID-19) Public Health Emergency, Section V B. This device has not been tested to assess the out-gassing limits of the material or their corresponding health effects.