K SHOW PREVIEW: Three-layer die improves film gauge control

Davis-Standard will exhibit the latest evolution of its Low profile (Lo-Pak) coextrusion technology. The updated 380 mm (15 in.), three-layer Lo-Pak die being shown 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.
Davis-Standard will also operate a five-layer cosmetic tubing line for making 16 mm to 50 mm diameter cosmetic sleeves at its Erkrath plant. The line, which will run at 18 m/min, features two 60 mm extruders for inner and outer layer tube construction and two 32 mm satellite extruders mounted on posts for the tie layers and EVOH barrier layer. The configuration conserves space compared to previous lines. The pre-scheduled running dates are Oct. 21, 25 and 26 for two hours each day. The exact times will be posted prior to the show. The demonstration will be relayed via video transmission to the Davis-Standard booth in hall 16.