Manufacturing of Man Made cellulosic fiber acetate

1. CELLULOSE ACETATE
PREPARED BY –
BINIYA ARAKKAL
TEXTILE SCIENCE FACULTY
INSTITUTE OF DESIGN & TECHNOLOGY
SURAT
Unit 8

2. Introduction
 The cellulose acetate are not pure cellulose compounds
like rayon.
 Cellulose acetate are the acetate ester compounds of
cellulose.
 The cellulose acetate fibres are of two types – Acetate
fibres and Triacetate fibres.
 Acetate and Triacetate are mistakenly referred to as the
same fibre.
 These fibres are similar in many of their properties but
differ in the chemical compounds.

3. Manufacturing
 Raw material for acetate includes cellulose
– obtained from cotton linters, wood pulp
and chemicals.
 Cellulose are shredded and mixed with
glacial acetic acid and kept aside.
 It is then mixed in machine where some
chemicals are added which cellulose turns
to liquid and changes to cellulose acetate
and made into flakes.

4. Manufacturing
 These flakes are dissolved in acetone.
 Solution is forced through spinneret into
warm air chamber.
 Here acetone evaporates and acetate
becomes hard into filament.
 This method is known as dry spinning.

5. A
C
E
T
A
T
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Flowchartofcellulose
acetate

6. Properties of Cellulose Acetate
 Dimensional stability – shape and luster
controlled by adding de lusturing agent
like titanium dioxide
 Resiliency – very low resiliency so
wrinkles easily.
 Moisture regain – slightly less than cotton
 Effect of temperature – acetate is a
thermoplastic fiber and is easily softened
at high temperature.

7. Fabric Characteristics
 Silk like appearance possesses luxurious
and soft feel.
 Excellent draping qualities.
 Tends to collect static electricity
 Dyes well
 Relatively low strength
 Resistant to mildew and moths.

8. Fabric Characteristics
 Weakened by sunlight
 Moderately absorbent
 Holds in body heat
 Resistant to stretch and shrinkage
 Easily blended with other fibers.

9. General Care
 Usually dry cleaned. Hand wash or cool to
warm gentle machine wash can be done.
 Need to be ironed at low temperature
while damp cloth on the wrong side of
fabric.
 Acetone or nail polish remover damages
acetate fabric.

10. Acetate Common Fabrics
Tafetta Satin
Jersey

11. Acetate Common Fabrics
Brocade Of Acetate
Lace Of Acetate

12. Acetate Tricot
Acetate crepe

13. Summary
 Two types of cellulose acetate fabrics –
acetate and triacetate
 There are different types of yarns produced ,
which depends upon the holes of spinneret
 Thick or thin yarn produced according to
spinneret
 Highly absorbent and resistant to moderate
temperature
 Main advantage – they don’t shrink or
wrinkle.

14. Triacetate

15. Acetate products

17. THANK YOU !