Drypoint perforation

Summary

In this process, conical needles pierce the web (eg paper, thin metal foils, PE foils). The grooves of the counter roll fit exactly to the needle pattern. The needles create funnel-shaped holes. This causes, for example, in paper increased water permeability and PE films air permeability. Since no material is removed in this process, the holes may partially close again when pressure is applied to the web.

Products

  • needle roller
  • PM 10

characteristics

The needles create funnel-shaped holes

This causes, for example, in paper increased water permeability and PE films air permeability.

No material removal

The holes may partially close again when pressure is applied to the web.