STATIC ELECTRICITY FORMATION
Static
Electricity:
When two surfaces come in close
contact to each other, then due to friction static charge is developed. This
produced charge remains enclosed between those surfaces and can not move from
one place to another. This type of charge is only exchanged between the
surfaces and is known as static electricity. The nature and amount of static
charge formation will be different based on different fibres. Usually, in case
of manmade fibres this charge generation will be higher if is compared to
natural fibres.
Effects of Static Electricity formation
in Textile Industry:
01. Similar charges repel each
other:
Ø Charged filaments in a
beam will be blown out away from one another.
Ø Cloth will not be folded
down properly
Ø Difficulties in fabric
spreading of cutting section at garments industry
Ø Ballooning of slivers
occurs in drawing frame
02. Unlike charges attract each
other:
Ø Difficulties in parachute
opening
Ø Different parts of a
garment may be sticked together
Ø Difficulties in materials
handling
03. Attraction between a charged
textile material and another charged particle:
Ø Dusts, dirts etc may be
attached with the textile material and make it dirty.
Ø During processing, fibres
can be lapped around drafting rollers
Ø Fibres may be sticked
with different parts of a machine
Methods of static electricity
minimization:
- By
controlling relative humidity% in spinning and weaving industry it is
possible to reduce static charge formation.
- By
applying conductive liquid such as oil, emulsion etc on textile materials,
static charge generation may be reduced.
- By
blending conductive material with non-conductive material static charge
formation can be reduced.
- By
using anti-static finishes to the textile materials it is possible to
reduce the charge formation
- By
earthling different parts of a textile machine produced charge can be neutralized
or removed.
