Processing of a fiber mass uses press rollers, where the fiber mass is compressed to force out any fluid followed by an expansion zone where a new treatment fluid is applied to impregnate the fibers

摘要

The invention relates to a method and to a device for treating a fiber mass (21), for example a nonwoven or a woven. Such fiber masses are guided through a pressing stand (22) for treatment in which they are pressed in at least one pressing zone (53) by means of a press roller (51), thereby pressing out from the fiber mass (21) a treatment fluid already present in the fiber mass (21). Once the treatment fluid is pressed out, a second treatment fluid is introduced into the fiber mass (21). In order to achieve as rapid and homogeneous a distribution of the second treatment fluid in the pressed-out fiber mass (21) as possible, the treatment fluid is introduced in an expansion zone (55) in which the pressure exerted by the press roller (51) decreases in the direction of movement (B) of the fiber mass (21) through the press roll surface (59), the press roll surface (59) being the surface by which the pressure acts onto the fiber mass (21).