Sanforizing/Anti-Shrinkage Finishing | Sanforizing Finishing Process

Sanforizing is a controlled compressive shrinkage process, which is applied on woven fabric to achieve shrinkage before making the garments. After sanforizing the residual shrinkage of woven fabric may be zero. In sanforizing process shrinkage is achieve by passing the cotton fabric onto a movable elastic felt blanket is released it assumes a shortened conditional. Thus the cotton fabric is forced to conform this compression.

Residual Shrinkage:
Residual Shrinkage is the latent shrinkage of a fiber ,Filament, yarn or fabric.

The shrinkage amount of fabric is dependent on:

1. The nature of fibers
2. The character of threads
3. The way of interlacing of thread in the fabric.
4. Crimp in yarn.
5. Cycle of washing no. of washing.

Sanforizing Process:
Sanforizing is a mechanical finishing process of treating textile fabrics to prevent the normal dimensional alternation of warp and weft. It is also called anti-shrinkage finishing process. It is a process of treatment used for
cotton fabrics mainly and most textiles made from natural or chemical fibres, patented by Sanford Lockwood Cluett (1874–1968) in 1930. It is a method of stretching, shrinking and fixing the woven cloth in both length and width, before cutting and producing to reduce the shrinkage which would otherwise occur after washing .
Simplified diagram of the sanforizing method of producing shrinkage
Sanforizing process is based on the principle that when a elastic felt blanket is passed around a metal roller in contact with it, its outer surface is process extended and the inner surface contracted. So the process is called controlled compressive shrinkage process.

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Mazharul Islam Kiron is a textile consultant and researcher on online business promotion. He is working with one European textile machinery company as a country agent. He is also a contributor of Wikipedia.

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