Extrusion How Film Extrusion Works: From Raw Resin to Finished Rolls Posted on 2026-09-012026-09-15 Pick up almost any plastic bag, wrapper, or protective liner and there’s a decent chance it started out as a handful of tiny pellets, nothing more than small granules sitting in a storage bin. Getting from that pellet to a smooth, continuous roll of film takes heat, pressure, and a… Read more