This online training discusses all about film extruder die, its principles and setup. The webinar contents include: Cast Film Die Design; Clamshelling; Single Manifold Cast Film Dies; Deckles for Film Width Control of Cast Film Dies; Blown Film Die Design; Spiral Mandrel Distribution System; Function of Spiral Channels; Design Options to Minimize Flow Variation; Effect of Number and Angle of Spirals on Flow Variation; Port Splitting Distributors; Die Lip Configurations; Effect of Viscosity on TD Gauge Variation at Die Lips; Die Bolt Adjustments for Blown Film Dies; Die Bolt Adjustment Procedure for Blown Film Dies; Coextrusion Cast Film Systems; Layer Multiplier Feed Blocks; Insert Feed Plugs and Adjustable Vanes; Multiple Manifold Cast Coextrusion Cast Film Dies; Coextrusion Blown Film Systems; Concentric Mandrel Blown Film Dies; Concentric Mandrel Coextrusion Die Design Limitations; Stacked (Modular) Spiral Blown Film Die Designs; Limitations of Stacked Die Designs; Stacked Nano Layer Blown Film Die Designs; Film Appearance Defects; Melt Fracture; Interfacial Instability; Zig Zag Pattern Interfacial Instability; Long Wave Pattern Interfacial Instability; Migration and Viscous Encapsulation; Test to Distinguish Melt Fracture from Interfacial Instability; Optical Properties; Hazy Film; Low Gloss (Dull Surface) – High External Haze; Surface Contamination; Gels; Unmelt Gels; Bubbles or Hollow Gels; Cross-linked Gels; Black Specs; Color Agglomerates; Die Lines; Purging Techniques; Preventative Maintenance Purging; Controlled Shutdown Technique; Start-Up Procedure; Process Interruption Purging; Stable Scouring; Chemical Purge Compounds; Mechanical Purge Compounds; Cyclical Scouring (Disco Purge Technique); Disassembly and Cleaning