The normal medical mask contains 3 layers of non-woven fabric, spunbond + meltblown + spunbond.
Meltblown fabric is the heart of the mask. It is the filter layer in the middle of the mask, which can filter bacteria and prevent the spread of germs.
Melt blown fabric is a film made of high melt index polypropylene. The fabric is composed of many criss-cross fibers stacked in random directions. The fiber diameter ranges from 0.5 to 10 microns, and the fiber diameter is about one-third of the hair diameter.
USEON provide meltblown fabrics with stable quality. We produce our products from PP resin raw materials to meltblown line. We can control the quality of each step.
As shown in the figure below, the gap of the melt blown cloth is so large. But the size of the COVID-19 is very small, about 100 nanometers (0.1 microns).
So how does the melt blown cloth filter the virus in the environment?
There are two main reasons:
- The virus cannot exist independently. Its transmission routes mainly include secretions and droplets when sneezing. The size of the droplets is about 5 microns. A qualified melt blown fabric can filter things of this size.
- The melt blown fabric needs electret treatment. It is a kind of static fiber filter. The droplets containing viruses will also be electrostatically adsorbed on the surface. So it cannot pass through the meltblown fabric.
The main factors affecting the quality of melt blown cloth include:
“True and false” melt blown fabrics are more difficult to identify and require professional testing.
To ensure that each of our rolls of cloth can meet high standards, we will take a piece of cloth from the production line for inspection every half an hour.
USEON melt blown fabric meets the requirements of medical surgical masks and has passed the SGS test.
The picture below is our SGS test report.
If by air, the fabric will be packaged in carton.
- Carton size is 550*550*550mm
- Net weight have two types:
- 15.6kg/carton, 2 rolls, each roll with width 260mm, length 1200m, 25gsm
- 15.75kg/carton, 3 rolls, each roll with width 175mm, length 1200m, 25gsm
If by sea, the fabric will be packaged also by pallet. Each pallet include 12 cartons.
We can also pack and transport according to customer requirements.