Hygiene and medicine
Perforated material is of particular importance in the field of hygiene and medicine:
Plasters should ensure that no dirt or other substances come into contact with the wound. By perforation of the patches air penetrates to the wounded area, thereby the healing process proceeds faster. With plasters on a roll, a perforation also serves as an easy tear off.
A special type of perforation allows a so-called one way transmission of liquids. This means that liquids can be transported away from the place of their origin and collected in a storage container. However, this effect is only partially achievable with needles.
The perforation of non-woven materials for hygienic applications requires relatively large holes and high web speeds. A process specially developed by AFS can meet these requirements.