Mixing:
If different grade of same fibres are kept together, then it is
called mixing
Blending:
When different fibres of same or different grades are kept
together, then it is
Called blending Importance of blending
(a) Important of processing performance
(b) Development for newer usages
(c) Minimization of cost
(d) To give the required characteristics to the end product.
(e) Availability of stock
Different type of mixing
operation
Process stage of blending type – type
of blending operation
|
Sr. no.
|
Blending type
|
Process stage
|
|
1
|
Bale mixing
|
Before the blow room
|
|
2
|
Flock mixing
|
Within the blow room
|
|
3
|
Lap mixing
|
Using doubling scutchers
|
|
4
|
Web mixing
|
At the ribbon lap m/c, or the blending draw frame
|
|
5
|
Sliver mixing
|
At the draw frame & sliver, Lap or the comber
|
|
6
|
Fibre mixing
|
At the card or Rotor spinning m/c
|
|
7
|
Roving mixing
|
At the ring spinning m/c
|
|
|
|
|
Difference between mixing and
blending
|
Sr. no.
|
Blending
|
Mixing
|
|
1
|
Mixing of different fibres. e.g p.c
|
Mixing of same fibres. E.g. Mixing blends of American &
Indian cotton
|
|
2
|
Same properties of fibre are used in blend
|
Different properties of fibre are used in mixing
|
|
3
|
In blending. quality is not considered
|
in mixing In mixing, quality of fibre are considered
|
|
4
|
In blending, fibres are blended in definite proportion
|
In mixing, quality of fibre are considered
|
|
5
|
All the characteristics of fibres are known in this process
|
All the characteristics of fibres are not correctly known in
this process
|
