Normally, we often hear about many types of 3-layer, 4-layer masks that have antibacterial effects, prevent virus invasion, and protect the respiratory tract during the COVID-19 pandemic. However, the quality to evaluate the antibacterial properties of the mask depends largely on the bacteria filter layer called meltblown.
Basically, meltblown is a type of super-smooth non-wsing filter fabric with a composition of 100% Polypropylene fiber (or PP), produced with a special process using the heated plastic blowing technique to form thin plastic fabric, achieving a bacterial filtration rate of up to 99%.
In addition, meltblown fabric also has water, dust, andod regulation properties, preventing the invasion of small objects when moving while still ensuring air circulation. This makes the wearer feel breathable, breathable and not irritated.
The most noticeable feature of meltblown fabric is its stretching ability, softness, and ability to withstand high temperatures, and cannot be burned or absorbed by water. This will increase the durability of the mask, helping users to always be protected, minimizing the possibility of infection with bacteria and viruses even in harsh environments.
A good layer of meltblown fabric will help the mask achieve high antibacterial efficiency. Therefore, the meltblown fabric plays an important role in evaluating the BFE (Bacterial Filtration Efficiency) index - an index that evaluates the ability of masks to filter bacteria. A medical mask that meets compulsory standards requires BFE to reach at least 95% to be considered safe and useful when used.
In addition, the above index is also suitable for people who are often exposed to chemicals, smoke and dust or work in the medical field.
To check the standard meltblown fabric in the mask, first, check the information indicators on the packaging of the product to clearly understand the ingredients in the mask. Next, soak the mask in water for about 5 minutes if the meltblown fabric is not absorbed by the water due to its anti- shot drop function, it will be a quality mask. On the contrary, fake or poor quality masks will be wet and soaked with water immediately after soaking.
Another way to check the quality of the meltblown fabric is to tear the mask, then remove the filter layers inside and pull it tightly. If it is a meltblown fabric, no matter how strong the pull is, it will not tear. In case the middle layer is torn, there is a high possibility that this is a poor quality product or a fake product.
Therefore, choose reputable establishments to choose to buy good products, protecting the health of yourself and your family members.
