| abstract |
A method for making holes (6) in a band, the method comprising, a. disposing a precursor web material (20) having a machine direction and a machine transverse direction, the band (20) having a predominant molecular orientation with respect to the machine direction and the machine transverse direction, in which the predominant molecular orientation is in the machine direction; b. providing a forming apparatus (150) comprising a first element (102) and a second element (104), in which the first element (102) comprises a corresponding element (102) and the second element (104) comprises teeth ( 110) narrowed from a base (111) and a tip (112), the teeth (110) being joined to the second element (104) by the base (111), c. moving the precursor web material (20) through the meshed elements (102, 104); wherein the holes (6) are formed in the precursor band material (20) when the teeth (110) of the second element (104) penetrate the corresponding element (102), characterized in that the base (111) of each tooth (110) has a cross-sectional length dimension greater than a cross-sectional width dimension, wherein each tooth (110) is oriented so that the cross-sectional length dimension of tooth (110) is arranged forming a angle greater than 30 degrees with respect to the machine direction. |