Patent ID: 7192392

Claim:
A method for manufacturing a perforated nonwoven material, wherein a prebonded nonwoven with embossed points is conducted to a nonwoven perforating device and needles of a needle roller engage the prebonded nonwoven and perforate it to form at least substantially round holes, and the perforated material then undergoes further processing, wherein the ratio between the number of perforations to the number of embossed points is between 0.15 and 0.25 , the ratio between the size of the holes and the size of the embossed points is between 0.15 and 0.25, the nonwoven is thermobonded with a number of embossed figures between 43 to 80 figures per cm 2 , wherein between 10 perforations per cm 2 and 25 perforations per cm 2 are created in the nonwoven, wherein an almost round hole size of between 0.8 cm 2 and 1.8 mm 2 is created in the nonwoven, whereby the embossed points surrounding the at least substantially round holes, each comprises a bonding area between 0.15 to 0.4mm 2 .