| http://www.w3.org/ns/prov#value | - he perforating and deforming area penetrates into a hole in the mating element. [0002] Here, such a sheet-like structure is to be understood, on the one hand, as a flat, flexible product, such as a plastic film, for example made of polyethylene, a sheet of paper or nonwoven fabric, which may also be a few millimeters thick.
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