Spinning technique to spun a fiber

1. FRICTION SPINNING

2. Contents
 Defination
Introduction
Principal
Diagram

3. DEFINATION OF FRICTION SPINNING
A friction spinning is type of spinning in
which yarn is manufactured with the
help of friction
It is also known as DREF spinning system

4. Introduction of dref spinning system
Friction (DREF) spinning system is an Open-end spinning
system.
Along with the frictional forces in the spinning zone the
yarn formation takes place.
The DREF system is used to produce yarns with high
delivery rate about 300mpm.
It produce a highly uniform yarn from diverse stock
including short or difficult to handle at high production
rates and low labor and energy expenses
It was introduced by Dr Fehrer in 1975

5. Principal of friction spinning
Fibers are delivered onto the drum surface, which
transports and stacks the fibers to the fiber bundle
rotating between two surfaces moving in opposite
directions.
The fibers wrap around the bundle surface.
wrapped fiber bundle (yarn tail) is tugged by the yarn
delivery roll.
Therefore twists by fiber arrangement are generated.
Due to separate yarn winding and method of twist
insertion, it has capability to go for high production rate

6. DIAGRAM

8. Uses
They are used to prepare blankets
They are used to prepare filters for water system
It is used to prepare kevlar body armour
This technique is used to prepare mop yarn
It is used to prepare Rayon

9. THANK YOU!