The Production Principle of Meltblown Nonwoven Cloth

Understanding the production process of meltblown nonwoven cloth

The weaving process of melt-blown nonwoven cloth is actually very simple. The polymer melt extruded by the screw extruder is blown by high-speed hot air to make the melt flow extremely stretched and form ultra-fine fibers. These ultra-fine fibers condense into a filamentous network on the mesh or drum, and become nonwoven cloth by self-adhesion.

The production process is as follows

Polymer feeding → melt extrusion → fiber formation → fiber cooling → mesh forming → bonding reinforcement → edge cutting & winding → finished product.

From the manufacturing principle of meltblown nonwoven cloth

In order to form ultra-fine fibers, it is necessary to use super high flowability PP material. Under the same conditions, the higher the melt quality, the finer the silk sprayed, and the easier it is to spray products with high filtration levels. Higher melt quality is relatively better for spraying good fabric.

What are the problems encountered in the production process of meltblown nonwoven cloth?

The same material is good to use at first, but cannot spray out fabric after a few days

Some materials have lower melt quality after being placed for a few days. Many products leave the factory with a melting quality of about 1500, but after a few days in the customer factory, it becomes 1000. This can cause the same material to be unable to spray out fabric after a few days of adjusting the machine. Different melt qualities require different processing temperatures. This is caused by inadequate processing technology in the production of melt-blown materials. The stability of materials is important.

The toughness of meltblown nonwoven cloth is poor and easy to break

This is currently the most common problem encountered by people. However, considering that the melt quality of the material is 1500, it is normal that the sprayed fabric is brittle and easy to break. Therefore, relevant ingredients need to be added in the production formula of melt blown fabric materials in different proportions to solve this problem. Some materials must be added at the production stage, but uneven processing and clogging of the header are often encountered when adding them to the meltblown machine.

Meltblown nonwoven cloth has an odor

The main reason may be that after the air compressor is used for a long time, the oil and gas filter fails, and the oil mist is sprayed with the airflow. In simple terms, the fabric has a smell. Although the filtration level of the fabric may meet the standards, it is harmful to human health. It is recommended to replace the fan. In addition, some problems may arise with the additives used in modified processing, especially initiators.

Using non-melt-blown materials to spray melt-blown cloth

Many small factories start to use non-melt-blown materials to spray melt-blown cloth and meltblown nonwoven fabric, and the filtration level is not up to standard. Moreover, it cannot be used for medical products.

Fysensi can also offer the following fabric:

PP spunbond nonwoven fabric

Activated carbon fabric

Gown material

Agricultural fabric