Biaxially oriented polypropylene film is made by stretching a polypropylene film in two directions. These two operations are usually described as machine direction stretching and transverse direction stretching. Although both are used...
Category: Film Production
Information on flexible film production processes, materials, extrusion methods, stretching, film quality, and manufacturing practices.
How Does Melt Temperature Affect Cast Film Extrusion
In cast film extrusion, melt temperature is one of those production conditions that can quietly change the whole process. The film may still come out of the die, but its appearance, thickness,...
Why Is Film Thickness Uneven During Blown Film Extrusion
Film thickness can look simple on a production sheet, but keeping it even during blown film extrusion is not always easy. A roll may appear normal at first glance, yet small differences...