Perforated, thermoplastic plastic films and use thereof to produce wedge-shaped films

The invention relates to perforated, thermoplastic plastic films (1) according to figure 1, having at least two parallel edges (1.2) and being of uniform thickness over the entire area (1.1) of said plastic films, wherein the perforation (2) is formed by at least one grid zone (3) of a multiplicity of holes (4), which grid zone extends over part of the entire area (1.1) or over the entire area (1.1), wherein the holes (4) are arranged in such a way that, in at least one direction, a mass gradient (5) is produced in the plastic films (1). The invention further relates tod the use of said plastic films to produce wedge-shaped films (6) free of perforations. 本发明涉及根据图1具有至少两个平行的边缘（1.2）的穿孔的热塑性塑料薄膜（1），跨其整个面（1.1）具有均匀的厚度，其中至少个栅格区（3）的穿孔（2）由多个孔洞（4）形成，该栅格区沿着整个面（1.1）的部分或沿着整个面（1.1）延伸，其中所述孔洞（4）设置为在塑料薄膜（1）中的至少个方向上产生质量梯度（5）；以及涉及其用于制造不含穿孔的楔形薄膜（6）的用途。