Abstract: A needle device for processing an in particular strip-shaped planar structure comprises a needle bed, on which a plurality of needle elements provided with tips are arranged in such a manner that the needle elements protrude from the needle bed and the tips thereof point away from the needle bed. The needle elements are designed as flat blades each of which having at least one cutting edge extending from the tip of the needle element toward the needle roller. The needle elements are fastened via leg-shaped mounting members in bar-like needle carriers, which are in turn inserted in grooves of the needle roller.

Abstract: A needle device for processing an in particular strip-shaped planar structure comprises a needle bed, on which a plurality of needle elements provided with tips are arranged in such a manner that the needle elements protrude from the needle bed and the tips thereof point away from the needle bed. The needle elements are designed as flat blades each of which having at least one cutting edge extending from the tip of the needle element toward the needle roller. The needle elements are fastened via leg-shaped mounting members in bar-like needle carriers, which are in turn inserted in grooves of the needle roller.

Abstract: An apparatus according to the invention comprises a needle roll (1) and a perforated roll (2), between which a sheet-like structure (3) can be perforated and deformed. The needle roll (1) has a large number of needles (11), while the perforated roll (2) is provided with a large number of holes (21) to accommodate needles (11) of the needle roll (1). The needle roll (1) and the perforated roll (2) are formed and arranged such that during the perforating and deforming operations, each needle (11) in the perforating and deforming area penetrates into a hole (21) in the perforated roll (2). In this way, the sheet-like structure (3) located between them is not only perforated, but the edges of the holes in the sheet-like structure (3) are also shaped three-dimensionally in a controlled way between the needles (11) and the edges of the holes in the perforated roll (2).