When the covid-19 is spreading, respirators have become mandatory public health necessities. Because of the shortage of masks, many ordinary public have to use headscarves, scarves or neck sleeves instead of respirators in public places without masks. At the same time, the market is full of mask products that claim to be effective but have not been tested at all. What about the efficacy of these mask substitutes in preventing germs?

Scientists at Duke University in the United States demonstrated a simple technique for testing the effectiveness of different mask fabrics and designs in reducing respiratory droplets transmission during normal speech.（click to share to linkedin）

The results showed that a suitable size N95 mask can reduce the spray most effectively, followed by surgical mask. Most of the cotton masks tested are awesome, and the barrier rate to droplets is not far from that of surgical masks. 

Unfortunately, not all types of mouth and nose covers are effective in reducing spray. Among them, the effect of knitted fabrics and scarves is particularly poor. Even more surprising to the researchers was the test result of the cashmere neck cover: the amount of droplets penetrating the cashmere neck cover was similar to that emitted during the benchmark test without wearing a mask.（Click to share to Facebook）

The study suggests that wearing a cashmere mask may pose a greater risk of transmission than not wearing a mask. According to the test results, the order of the effect of mask materials on preventing droplet is N95 > surgical mask > cotton > knitted fabric and square towel > cashmere neck cover. 

So, what kind of mask material is suitable for making masks? At present, the mainstream masks are still I / II / IIR masks, 1 / 2 / 3 level masks, kn95 / N95 masks and ffp1 / FFP2 / ffp3 masks. Melt blown fabrics and non-woven fabrics are used as the main materials. The layer of melt blown cloth in the middle of the mask is the real barrier to bacteria.

1. Certificate complete

Zhejiang sjeex Machinery Co., Ltd., which is famous for designing and manufacturing mask machines, melt blown machines, spinning and fusing nonwovens, and spunbonded nonwovens, not only provides mask machines, melt blown machines, spinning and fusing non-woven machines, but also provides mask materials, which are relatively cheap and cost-effective. And all materials have Intertek, TUV, SGS, gttc and other certificates, and some customers have made masks with sjust's mask machine and mask materials, and have passed the local inspection. 

2. Short delivery time, suitable for all kinds of masks

SJX has its own 22 melt blown production line, which can ship 26 tons per day with short delivery time. It can meet the production requirements of I / II / IIR, 1 / 2 / 3, kn95 / N95, ffp1 / FFP2 / ffp3 masks. 

3. Can be customized, perfect after-sales service

Zhejiang sjeex Machinery Co., Ltd. has more than 4500 customers and 10000 machine installation cases in the world. It has rich experience in the customization of mask equipment and mask materials. The specification, color and weight of mask materials can be customized. The after-sales service is perfect. It provides overseas engineers with technical support and relevant guidance. It has a good reputation and high customer return rate.