This collection of research papers covers various topics in polymer processing and manufacturing, including injection molding, powder injection molding, and compression molding. The papers highlight different aspects of these processes, such as the effects of gas-assisted heating and melt and mold temperatures on the solidification behavior of HDPE, the role of gas penetration in the morphological formation of polycarbonate/polyethylene blends, and the impact of binders on the viscosity of low-pressure powder injection molded superalloys. Other papers investigate the deformation behaviors of nanostructures in the demolding process of micro-injection molding and the rheological properties of alumina feedstocks for low-pressure injection molding. Finally, a paper examines the viscoelastic behavior variation of glass mat thermoplastics in compression molding. Overall, these papers offer insights into the challenges and advancements in polymer processing and manufacturing.