Here is some info about our face mask production which we have happily discontinued:) We are back to making pillows and hopefully we don't ever have the need to make masks again.
Cut 2 pieces for the outer fabric.
Cut 2 pieces for the liner.
Sew 2 button holes, 1 on each outer piece.
Below is a clip of our earlier version that required 8 holes.
Sew the 2 outer fabric pieces together inside out.
Sew the 2 liner pieces together inside out.
Iron and fold the edges of the liner.
Hem the liner with double stitches.
Sew the liner and outer fabric together inside out.
Turn the fabric right side in and iron the edges.
Sew the perimeter and double sew the fold making it easier to thread the cording.
This clip also shows sewing the channel between the button holes for the nose wire.
Double fold the end for the cord channel.
Sew a channel for the cording/elastic etc...
Cut and turn wire with pliers for the nose wire.
Wash / Dry and Iron the mask.
Insert the nose wire, elastic or cording and cord stop