Function and production method of melt blown cloth

- Apr 23, 2020-

1. What is melt blown cloth?

Melt blown fabric is a kind of non-woven fabric, also known as non-woven fabric. It is composed of directional or random fibers, without warp and weft, and its appearance and performance are similar to that of textile fabric. There are many processes for nonwovens, one of which is melt spraying. As the name implies, the cloth produced by melt blown method is called melt blown cloth or melt blown non-woven cloth.

2. What is the function of melt blown cloth?

It's not this special period. How many people can know this material? What's its purpose? Listen well: filtering, medical and health materials, environmental protection materials, clothing accessories (lining), battery diaphragm materials, wiping materials for machining workshop, core materials for disposable mask, diaper, sanitary napkin and so on.

With the outbreak of this epidemic and the experience of fighting against the virus, all of us have begun to understand the importance of environment and health for life, and we have begun to pay attention to and re recognize it. No matter how it develops in the future, wearing a mask will certainly become a normal situation. There will also be an increasing demand for masks. Because the key word is: one time.

3. How is the melt blown cloth made?

The non-woven fabric produced by melt blown method is a kind of silk spinning product which can make the high polymer solution just extruded out of the extruder rapidly and high rate stretch and solidify by means of high-speed hot air flow. To put it simply, it is a product formed by quickly assembling together after coming out of the extruder die.

4. What is the raw material for the melt blown cloth?

The main raw material of melt blown cloth is polypropylene, which we often call PP.

5. Why do medical masks have to use melt blown cloth?

The following figure shows the layered structure of the mask. As we know, the non-woven fabric made of polypropylene by extrusion melt spraying is a kind of ultra-fine electrostatic fabric with a fiber diameter of about 2 microns. This diameter is one tenth of the outer fiber of the mask, so it can effectively capture and isolate dust. When the virus droplets are close to the melt spraying cloth, they will also be absorbed on the surface by static electricity and unable to penetrate in the past, effectively preventing bacteria from invading.

6. Schematic diagram of melt blown cloth production line