The polymer particles with micron and submicron size have many applications in various fields, such as automotive parts, interior applications, printing, electronics, and cosmetics, since they have played a significant role in improving the function and performance of the final products. In this regard, a variety of commercially available technologies have been so far developed as to particle generation: cryogenic crushing and grinding, air micronization (size reduction or disintegration), precipitation from solution (size enlargement or agglomeration). However, those conventional processes have several practical drawbacks such as high cost of manufacturing, imperfection of surface structure, post treatment for residual solvent. A different attempt by LG Hausys via combining the most commonly used unit processes in polymer processing has been made to tackle the above-mentioned problems from economical viewpoint of particle fabrication. As often case with a conventional polymer processing such as extrusion process, this approach has a good productivity as well as no need of solvent use. In particular, the interactive effect of polymer’s intrinsic viscosity and nozzle outlet velocity on stability of particle formation and controllability of particle size distribution will be summarized. Also, the potentially accessible applications such as selective laser sintering in 3D printing as well as increasingly growing automotive application in interior materials will be briefly introduced.