The N95 mask is a popular protective mask in life, and many people will wear the N95 mask. There will be dotted holes on both sides of the N95 respirator. This is a fixed point, which will melt and compress the multi-layer materials together to play a certain role in reinforcement. These dotted holes are not empty.
N95 What is the dotted line hole on the mask for
The holes on the N95 mask are mainly for reinforcement.
The N95 mask is made of non-woven fabric made of multi-layer hot melt plastic. It needs to heat melt the peripheral and middle seams of each layer, and the two rows of holes in the middle play a reinforcing role.
The N95 mask is a medical mask, which can effectively prevent the invasion of viruses, bacteria and other pathogens in the air. It can also exchange gas through the breathing hole to avoid the feeling of suffocation.
Is the dotted line hole on the N95 mask empty
It is not empty. It has been compacted by technology.
The materials used in current masks are non-woven fabrics made of hot melt plastic, which generally have 3~5 layers, and each layer has the function of each layer.
In order to prevent dislocation between layers, it is necessary to fix all layers together through some parts. The mask in the picture is stitched together by hot melting (scalding) the peripheral and middle seams of each layer, as well as ear bands. The middle two rows are used for reinforcement.
The hot melting position should be airtight (in fact, some parts have become plastic sheets). If it is airtight, it is a manufacturing defect and a waste product.
N95 mask can be worn for several days
It depends on the situation.
When wearing the N95 respirator, if you have been to places with high risk of virus exposure such as crowded places or hospitals, it is recommended to replace it in about 4-6 hours.
If it is only for daily wear, the N95 mask can be worn for about 1-2 days without getting wet or damaged. Research shows that the filtration efficiency of the n95 mask is still above 95% after two days of wearing. However, when the N95 mask is worn for a long time, its ability to resist viruses will gradually decline with the increase of use time.
