Enhance the efficiency of automated parcel sorting machines by integrating a closed-loop overflow management system, focusing on identifying current challenges, critical integration factors, and conducting a cost-benefit analysis and developing guidelines for integration to optimize warehouse operations.

To fulfil the purpose of the study, a single case study was conducted which included eight interviews and three observation visits at the case study company. A mixed-method approach was employed, combining literature review with a case study. Data collection methods included semi-structured interviews with employees, on-site observations, and analysis of operational data. The empirical data was interpreted and analyzed through thematic data analysis and triangulation to identify patterns in the collected data.

The study identified significant challenges in current linear sorting systems, including limited flexibility, inefficient overflow handling, and integration difficulties. Critical factors for implementing closed-loop systems were outlined, such as compatibility with existing sorting machine, spatial constraints, and control system integration. A cost-benefit analysis was conducted which help the company to decide whether to make design change or not, and implementation guidelines were proposed, emphasizing phased integration and continuous monitoring.

The closed-loop overflow management system has the potential to significantly improve operational efficiency, reduce labor costs, and enhance overall sorting capacity. The implementation guidelines provide a practical roadmap for industry professionals planning such projects.

The study is primarily based on a single case study, which may limit the generalizability of findings. The rapidly evolving nature of logistics technology means that some recommendations may become outdated. The cost-benefit analysis is based on certain assumptions and projections, which may need refinement with more extensive data.