Process for fibrillating cut and split fibres made of polymer

摘要

The invention relates to a process for fibrillating cut and split fibres made of a polymer, for example from the group of the PVC and PAN fibres. To achieve a fibrillation result which will confer properties on the fibres which will make them suitable for use as aggregates for building materials consisting essentially of hydraulic binders or as additives for the production of paper and board and also fibre webs, it is proposed to grind the fibres having a length below 40 mm in a suspension in water using a stone-equipped grinding machine.