See the existing face shields are made up of OHP films, which are used and thrown daily. They are just 0.135 to max 0.3 mm thick films. They just bend and forma crease, not making it clear to the visibility of the doctors. Also, they say the portion where the film is thrust into the circular ring is ok but at the bottom end the film is wide open. This poses dangers. Also the head band has hard plastics. This was hurting and making a permanent mark on the forehead of the doctor. Ours is rigid trapezoid- aly shaped giving clear straight faced transparent rigid sheet of 1.3 mm thick as an alternative with foam cushioned against forehead and the doctors loved it. We have given 300 plus within 3 days from the date of launch. The idea is to stop them throwing away those film based face shields as a plastic dump. Her in Chennai, India already 4 major government hospitals have dumped close to a tonne worth films as waste. They may not be sterilised before disposal and that may pose a larger challenge. This shield of ours can be just cleaned and washed with hot water or soap water, sterilised in oven or E.O and can be worn again. So this shield becomes a personalised product, not a disposal, thus sving films dumped and plastic-biological-medical waste accumulating posing more danger.
I did it myself with my team. We had a order from the Rail;way hospital here, run by the Government and the doctors are happy as they do not throw, but own a face shield now, also these had been given to the sanitary workers, security guards etc.
We have started pilot supplies today, now we have a cpacity to make 1000s a day the face shields, 200 a day the protective chamber hoods. If there are no shipping restrictions we can export to any country.