This may not be so much for us in Vancouver. But the supply shortage in HK is critical. Trying to do anything possible to help our friends in HK.
Masks are most effective when spreaders wear them as to not to spread to others.
But people don’t know who the spreaders are.
How to make a medical mask?
Is stuff like this useful or trash
The design of the surgical masks depends on the mode; usually the masks are three-ply (three layers). This three-ply material is made up from a melt-blown material placed between non-woven fabric. The melt-blown material acts as the filter that stops microbes from entering or exiting the mask. Most surgical masks feature pleats or folds. Three pleats are used to allow the user to expand the mask such that it covers the area from the nose to the chin. There are three different ways to secure the masks. The most popular is the ear loop, where a string-like material is attached to the mask and placed behind the ears. The other is the tie-on, which consists of four non-woven straps that are tied behind the head. The third is the headband, an elastic strap which is secured behind the head.[ citation needed ]