are closely related to air pollution, pollen, as well as spread of disease. Did you know about the history with protective mask?
This article contains the examples below:
History of sterile mask
D series: No time confine for protection of non-oily revoked particles
R series: safety of non-oily suspended dust and sweaty suspended dirt for eight hours
P sequence: protection against non-oily halted particles and sweaty halted particles without time restrict
When the carrier associated with some particulate matter is usually oily, and these substances are attached with the electrostatic non-woven leather, it will reduce the electrical property and let the fine dust to help penetrate. Purpose of particles. So each series can be divided into 3 degrees: 95%, 99%, 99. 97% (ie 95, 99, 100 for short), so there are actually 9 categories of filtration system media.
History of protecting mask
China was the first to use a protective mask in the world. In ancient times, people in the court began to pay for their noses and noses with silk scarves so that you can prevent dust and flow of air pollution.
In the earlier 13th century, protective masks only appeared within the Chinese court. To avert the breath from reaching the emperor's food, the waiter made a mask made of silk and gold threads.
At the end belonging to the 19th century, protective masks began to be used in the field of health care. German pathologist Leidge starts recommending medical staff to apply gauze wraps to prevent bacterial infections.
At the beginning from the 20th century, protective masks became the actual must-have items of public life for once. The Spanish flu who has swept the world includes claimed about 50 thousand lives, and the general population has become required to wear masks to fight the herpes virus.
In the middle and also late 20th century, the large-scale utilization of protective masks was drastically frequent. In history, masks have played several important roles in stopping and blocking the spread of germs in the major influenza flu.
In 1897, the German Medech introduced one way for covering mouth plus nose with gauze to counteract bacterial invasion. Later, someone made a six-layer gauze mask and sewed it within the collar. Just turn them over and cover your own nose and mouth. Even so, it has been highly inconvenient to press and hold this mask.
Soon after, someone came up which has a strap on the hearing, which became a protective mask men and women often use today.
In 1910, a plague broke out in Harbin. During the time, Dr. Wu Liande, the deputy supervisor from the Beiyang Army Medical Institution, invented the "wood-style goggles. "
In 2003, utilization and popularity of masks reached an innovative climax. A SARS caused masks to be sold out for some time. There were long lines looking at major drug stores, and people rushed to acquire masks.
In 2009, next the "bird flu" throughout 2004, the "Avian H1N1 Influenza" produced protective masks once again appear while you're watching cameras of major news media world wide.
The emergence of the particular PM2. 5 air hazard notion in 2013 caused public attention on the problem of air smog, making protective equipment for example protective masks very common during haze weather.
People with heart or maybe respiratory problems (such because asthma emphysema), pregnancy, dizziness once wearing, difficulty breathing, and sensitive skin will not be suitable for wearing clean masks.
The article is going the history of your protective masks. If you've and demand of shielding masks, please contact Vench.https://www.venchmedical.com/Protective-Mask-pl3251865.html