The other machine (fig. C), more productive than the previous one, foresees several points of contact of the fabric on the thistles placed in any case on a single drum. The fabric to be subjected to this process passes into a tank (fig. C, 1), where it is soaked in water at room temperature or, in some cases, at 50 ° C in which auxiliary products can be dissolved; between the tensioning cylinders (fig. C, 2), it slides on the drum (fig. C, 3) where the contacts with the thistles occur.
Four pairs of cylinders (fig. C, 4), placed above the drum, approaching it,
they increase the contact area between thistles and fabric while when they move away this area decreases until it disappears.
The wrinkled piece then passes into a tray (fig. C, 5), still impregnating itself with water; it is then rolled up and remains in this state for a period of 24 hours, always in motion, to obtain a better fixation and shine of the hair.