Perforated paper tearing aid system - increases degree of weakening towards paper edges

摘要

The system aids tearing of perforated paper, whose surface is divided into sheets by weakening the cross-section. The degree of weakening increases towards one or both of the paper edges. This can be effected by increasing the dia. of the holes (11) towards the edges, or decreasing the interval (15) between them. The paper can have an unweakened zone for pulling. Weakening can alternatively be achieved by recesses in the paper, whose depth increases towards the edges, along a tear line. The system allows tearing off easily by one hand.