There are many processes for manufacturing nonwovens. One of them is the melt blown process.

Melt Blown Process for Producing Melblown Nonwoven Fabric

In this process, very fine fibers can be produced at very high production rates without using spinneret.

The Melt Blown process was first introduced in the 1950s but became very popular in 1975. The annual growth of the process is 10%.

Here are the steps to this process:

• First, the polymer is melted and introduced to the polymer hopper. The extrusion happens in a usual way but through a relatively large extrusion hole.

• A high-speed stream of hot air is introduced to the polymer after it passes the extrusion holes. Sometimes the air temperature is above the melting point of the polymer.

• The introduction of cold air solidifies the polymer. Some drawing takes place depending on the velocity of the air.

• During the process, the filaments break into staple fibers.

• The staple fibers then collected into a batt with the help of air-suction.

Melt Blown Process

As the fiber used in this process is extremely fine, the contacts among the fiber are more, and the integrity of the batt is greater.

In the manufacturing of nonwoven, knowing what is web and batt is very important.