This project was conducted together with ALPHA-carpets. The capacity of water absorption of hollow PP-fibres was examined and improved, in order to optimize the quality of actual products such as bath maths and towels, but also to be able to bring new products on the market in the future. In the framework of this project, new methods have been written to quantify the water absorption and the drying of hollow fibres. More understanding was gained in the effect of the extrusion parameters on the fibre diameter and the capacity of water absorption of hollow fibres.