Abstract: The invention relates to a polymer fibre having improved long-term dispersibility, a method for production thereof, and use thereof. The polymer fibre according to the invention comprises at least one synthetic polymer and a preparation present on the surface of the fibres, said preparation comprising at least one cellulose ether selected from the group carboxymethyl cellulose (CMC), methyl cellulose (MC), ethyl cellulose (EC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), methylethyl cellulose (MEC), hydroxyethylmethyl cellulose (HEMC), hydroxypropylmethyl cellulose (HPMC), ethylhydroxyethyl cellulose, carboxymethylhydroxyethyl cellulose, and mixtures thereof. The polymer fibre according to the invention has improved dispersibility and is thus suitable for the preparation of aqueous suspensions which are used, for example, in the formation of textile fabrics, for example nonwovens.