In the last decade, there has been a significant trend on biopolymers and their applications to decrease dependence on petroleum-based products, and environmental problems such as plastic waste, exceeding limit of the greenhouse gas emission and climate change.  Polybuthylene succinate (PBS), which has interesting properties such as bio-basedness, biodegradability, compostability, melt processability, chemical and thermal resistance, attracts attention in both industry and academia. Although there are limited studies in the literature on production and properties of PBS yarns, there is a serious lack of information about its production and parameters on the industrial scale. In this study, PBS multifilament yarns were produced by melting PBS chips at different temperatures in the extruder on the industrial scale melt spinning line. It was aimed to investigate the effect of process temperature of low melting PBS biopolymer on the textile values of the PBS multifilament yarn. Process temperatures in the extruder were gradually increased from 200 °C to 280 °C. The physical, mechanical and thermal properties of PBS filaments were determined to understand effects of changing process temperature and the microscope analysis were carried out to observe their cross-sectional shape. It has been determined that the commercial usage properties of PBS multifilament yarns were disrupted, as the process temperature increases. The results showed that PBS multifilament yarns with acceptable textile values could be obtained by melting PBS chips in the extruder on the conventional PET melt spinning line.