Some data to watch for face masks

The core of the facial mask is 3-layer of non-woven fabric, as below

1. Out layer: SBPP spunbond polypropylene

2. Filter layer: MBPP meltbond polypropylene MBPP, BEF>95%

3. Inner layer: SBPP spunbond polypropylene

This is 3ply non-woven disposal mask.

l Nose clip

Mask should come with a nose clip, which is made of a malleable material, not necessarily metal, malleable plastic also available. Noce clip length ≥8cm

l The mask belt

The fracture force at the connection between the strap and the belt is not less than 10N

l Synthetic blood penetration

The synthetic blood is sprayed at 16kPa (120mmHg-diastolic pressure of the heart) on the outside of the mask, should be no penetration of the inside of the mask.

l Bacterial filtration

BEF>95%, mainly by physical electrostatic absorption

l Particle filtration

The filtering rate of the mask for non-oily particles is≥30%

l Pressure difference

Air exchange pressure difference≤49Pa

l Flame retardant

Mask material should be non-flammable and burn≤5s after leaving the fire

l Microbial content

Non-sterile masks: microbial content<100cfu/g

Sterilization mask should be sterile

l Ethylene oxide residue

Ethylene oxide sterilized masks, which should be≤10μg/ g