Sanforised
Also known as: Sanforized, Sanforizing
Mechanical pre-shrinking of cotton fabrics by the Sanford Cluett process with residual shrinkage below one percent.
Description
Sanforising is the mechanical pre-shrinking process for cotton and linen fabrics developed by Sanford L. Cluett in 1928 and patented from 1930. The damp fabric is pressed by a rubber blanket against a heated cylinder; when the tensioned rubber blanket relaxes it compresses the fabric in warp direction and anticipates the contraction that would otherwise occur in first wash. Steam and heat set the effect, then the fabric runs over a felt calender section and is dried.
Sanforised cotton shows residual shrinkage below one percent after standard wash (ISO 6330); untreated greige would shrink 8-12 percent and is unusable for garment making. The process is a hard prerequisite for dimensionally stable T-shirts, shirts and jeans. Sanforized is a registered trademark of the former Cluett Peabody Corporation; free-to-use terms are pre-shrunk or shrink-treated.
Advantages: no size surprise after first wash, clearly calculable cut sizes for pattern making, permanent dimensional stability. With highly elastic fabrics or coarse terries sanforising reaches its limits and additional compactors or tumblers are used.
Properties
| Process | Mechanical pre-shrinking with rubber blanket |
|---|---|
| Result | Residual shrinkage below 1 % |
| Colour fastness | Not applicable (purely mechanical) |
Related product categories
Sources & references
2- Wikipedia: Sanforisieren Wikipedia — Freie Enzyklopädie https://de.wikipedia.org/wiki/Sanforisieren
- Cluett Peabody Sanforized History Wikipedia — Freie Enzyklopädie https://en.wikipedia.org/wiki/Sanforization
