Shrinkage is the contraction in the dimension of the fabric due to usage. Cotton fabric
suffers from two main disadvantages of shrinking and creasing during
subsequent washing. Creasing is overcome by the resin finishing whereas the
shrinking is prevented by a special finishing known as sanforising
and the machine used for that purpose is known as Zero-Zero pre
is mainly selected for apparel purposes because of their durability, ability to
withstand the rough laundering treatment especially under alkaline conditions,
good perspiration, absorption characteristics, and comfort during wear and
ability to take up a wide range of dye stuffs. But the main problem with the
cotton fabric is shrinkage during washing or laundering. Shrinkage is undesirable
property to the apparels. So the material has to be either shrink resistant or
main objective of anti-shrink finish is to keep the fabric smooth and free from
undesirable shrinkage. So this finish is referred as Anti-shrink or Shrink
resistant or shrink recovery finish. This finish is purely chemical and
permanent finish. Usually cotton, linen, viscose and cuprammonium rayon are
finished with resin. The finishing process by which the cotton knitted fabrics
are made not to shrink is known as "Anti-Shrink Treatment".
type of knitted fabrics such as single jersey, interlock and flat back rib were
treated with Resil CLS using pad-dry-cure technique. Also dosage of the
chemical and pH were also changed to study their effect on the treated fabric.
The chemically treated knitted fabric is also tested for dimensional stability,
spirality, bursting strength and formaldehyde content as per the standard test
methods. Dimensional stability and spirality has found to be improved compared
to that of untreated fabric. Resil CLS treated fabric resulted in a strength
loss of 15 %, it is comparatively less than that of other cross linking agents.
It was found that only 4.05 ppm of formaldehyde was released from the fabric
which is acceptable and negligible as per the standards.
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authors are associated with the Dept. of Textile Technology PSG College of
published in Textile Review, December 2011
Click here to see Part I
Click here to see Part III