Abstract. Being a member of biodegradable polyesters, Poly (ԑ-caprolactone) (PCL) has attracted significant interest in biomedical applications such as sutures, implants and tissue scaffolds. The low melting point of PCL makes it a good candidate for processing with additives that are thermally sensitive. Several research studies have investigated the production of PCL fibres via melt-spinning, which is the most cost-effective fibre production method. However, the production parameters and fibre properties so far are not compatible with large-scale production. Therefore, in this study, we tried to establish different conditions and parameters for melt spinning of pure PCL filaments with improved properties. Furthermore, we utilized the knowledge of PCL melt-spinning and the low melting temperature of PCL to spin liquid-core PCL fibres by an economic process to expand the field of application. PCL fibres were produced on a pilot-scale melt-spinning plant. As a semi-crystalline polymer with extension-thinning behaviour, PCL shows necking (ductile failure) during drawing in the spinline. This abrupt and drastic decrease in the cross-sectional area produces oscillations in the filament tension (draw resonance) which impede melt-spinning. To overcome the draw instability of this biodegradable polyester, the drawing setup was modified. The modified drawing system, in which the PCL filament was running over the second godet in reverse direction, prevented draw instability during fibre production. WAXD patterns show distinct diffraction peaks of the drawn fibres, which indicate highly oriented crystallites. The low melting temperature of the polymer allowed processing below 100 °C and water-filled PCL fibres were also successfully spun in a continuous process. Tensile test results suggest that PCL can be melt-spun in large scale with decent mechanical properties. Keywords: Biodegradable fibres, poly(ԑ-caprolactone), melt-spinning, liquid-core fibres