Sanforization

The shrinking or sanforizing is a finishing process for fabrics and textiles from the most natural and / or synthetic fibers. Here, the cloth is subjected before cutting a mechanical compression and shrinks. This state is fixed, thereby preventing a subsequent taking of the final products, and thus a subsequent - undesirable - dimensional change. As Monforisieren is the shrinkage of polyester blended fabrics on Monforisatoren, special shrinking ranges, respectively.

Shrinking

To prevent subsequent shrinkage of textile products in water and / or heat-affected, the shrinkage of the cloth in an industrial process is intentionally anticipated. First, a washing test is performed on a product sample in order to determine the actual extent of shrinkage. Thanks to a now measurable Wareneinsprunges the shrinking machine is set.

The cloth is moved by a conveyor continuously into the shrinking machine and first moistened with water or water vapor. In the shrinking machine a pressure roller presses a rubber band against a heated Krumpfzylinder, the rubber band is depressed and therefore stretched. The between rubber band and hot Krumpfzylinder positively guided cloth needs to stretch the rubber band is stretched and join. After leaving the print zone, the stretched rubber band contracts again, the cloth makes this shortening with and is pushed together, so gekrumpft. The more the rubber band by pressing the Krumpfzylinder, is so excited, the greater the subsequent relaxation and thus the shrinkage of the cloth. In this way, the extent of the shrinkage can be changed. Subsequent to the shrinking, the cloth is dried and thereby fixed to the state now made ​​. Again, a washing test of a sample of goods carried out, and checks whether the dimensional stability meets the required limit.

In this method, no chemicals are used, the tissue is fixed solely by moisture, heat and pressure. Such a finished fabric ensures generally a dimensional stability in the range of about / - 1% and is referred to as a " shrink " or " low shrinkage ". In particular, in the field of technical textiles, such as in aircraft or automotive, tissue gekrumpft a Wareneinsprung of less than 0.3 %.

Sanforizing

One of the most well-known equipment brands for Shrink resistant textiles is the Sanford L. Cluett from the Americans (1874-1968) developed in the 1920s Sanfor process. The name " Sanfor " was then derived from the first name of the inventor Sanfor (d). He developed the first shrinking machine, which functioned similarly as described above. Since 1930, Sanforized Company, a Division of Cluett, Peabody & Co. Inc., New York, USA, issues licenses to textile and clothing manufacturers. These must contractually agree to comply with certain manufacturing and testing methods in their production, and are then allowed to attach to their products, the Sanfor label. Be Made mostly of cotton and cotton blend fabrics. Sanfor, Sanforized and Sanforizado are registered trademarks of Cluett, Peabody & Co. Inc., New York, USA for different countries. In Switzerland and Germany, the Sanfor brand since 2005 in the hands of GTB Holding Corp. , New York, USA.

Sanforized Plus

Sanforized Plus and Sanforized Plus 2 indicate an additional easy-care finish. The fabrics are treated by the sanforizing with synthetic resins ( urea and melamine resins), to improve the crease resistance and to adjust the product dirt. The chemicals used ( contains formaldehyde ) can cause allergic skin reactions and are to be carcinogenic in suspicion.

Sanfor Set

A Sanfor Set - labeling indicates a Crease equipment. The textiles are treated after sanforizing with ammonia. This refinement process leads to a strong load on the sewage.