Comparison between Spun laying, Flash Spinning, Melt blown method of forming non-woven web.

Spun laying	Flash Spinning	Melt blown
1. First the polymers are melted in spun laying process.	1. First the polymer is dissolved in a solvent in flash spinning method.	1. First the polymers are melted in melt blown process.
2. The polymers are extruded out through a spinneret	2. The polymer is extruded in the form of a sheet	2. The polymer is extruded out though a relatively large hole compared to holes in spinneret
3. The polymer is cooled by air and then drawn out and laid in the form of web.	3. The polymer sheet is first drawn and then by mechanical fibrillation is made into a fibre network and thus web forms.	3. The polymer is first subjected to hot air which makes it expand. Then it is cooled by cold air and laid in the form of web.
4. Polyester and polypropylene are most commonly used.	4. Polyethylene and polypropylene is used.	4. Polyester and polypropylene are most commonly used.