Three-layer die improves film gauge control

摘要

Davis-Standard introduced the latest evolution of its low profile(Lo-Pak)coextrusion technology at this year's K Show.The updated 380 mm(15 in.),three-layer Lo-Pak die is from a family of dies that serve a range of applications,such as converting film,barrier food packaging and laminating films.The die incorporates a unique shear-rate modeling design that reduces residence time and wetted surface area when compared to other dies.This design also features controlled shear rates in the critical confluence area,improving gauge control accuracy and film consistency.The low profile system is designed for 200 to 270 bar die inlet pressure for excellent overall and layer-to-layer thickness control for multiple polymers and processing conditions.