Category: Film Extrusion

A roll of plastic film rarely looks complicated after it has been finished and wound. On a production floor, however, that roll represents a long series of decisions about material preparation, melting, shaping, cooling, drawing, tension, surface condition, and winding. The route taken during those stages can influence the film...

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...