A Barrier screw for film extrusion can improve melting efficiency and melt uniformity when processing LDPE, HDPE and LLDPE.

Unlike a conventional screw, the barrier section separates solid polymer from melted material during plasticizing. This can provide more controlled melting and help reduce unmelted particles.

However, a barrier screw should not be selected only to increase kg/h. Screw diameter, L/D, RPM, motor power, film material and required output must be considered together.

For replacement projects, the existing screw drawing and current production data are especially important.

Need a new film extrusion screw? Send us your material + screw diameter + L/D + RPM + required kg/h. We can evaluate the application and manufacture a suitable screw and barrel.