What does Sanforization mean?
The process of pre-shrinking a so to a limit the residual or further shrinkage of the to less than 1%. This sanforization process involves the stretching of the before it is washed, which helps to prevent shrinkage. that doesn’t undergo sanforization and is considered raw is likely to shrink up to 10% on the initial wash and continue to shrink up until the third wash. In the world of denim, un-sanforized denim is referred to as raw denim.
Style Terms explains Sanforization
Sanforization is a process that stabilizes the before it is cut by stretching and shrinking it. Named after its inventor, Sanford Lockwood Cluett, it was patented in 1930. In 1936, Blue Bell (now ) began using the method for its Super Big Ben overalls. During the sanforization process, the material is fed into a sanforizing machine and moistened with water or steam to promote shrinkage. It is then stretched through a series of rubber belts and cylinders before it is finally compacted to its final size. Sanforizing ensures that the will not shrink during production or wear.