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Index page for: The Plastic Film and Foil Web Handling Guide

Table of Contents WEB STABILITY Imaginary Resistive Tension Member ConceptsAlignment RequirementsStructure & Stresses Affect Film Web BehaviorTension LimitationsTensions Limitations with Temperature TENSION ISOLATIONNIP Roller Tension IsolatorsThree-Roller NIP SystemsS Wrapped Driven RollersVacuum Rollers Vacuum BeltsWEB TENSION MEASURING AND CONTROL DEVICESWeb Tension SensingDancer-Roller SystemsLoad- Cell Rollers Mass-Free Dancer SensingWEB SPREADINGIncreased Diameter under Web EdgesConcave RollersBowed Spreader RollersAir-Bearing SpreadingAngled Opposed-Edge NIPSFlexible-Leaf Spreading RollersWEB GUIDING/STEERINGLateral Shifting of the Unwind and Windup StandsPivoting Steering/Guide RollersSTATIC MANAGEMENTCharge Buildup TheoryStatic Removal from WebsSLITTING TECHNOLOGYRazor Blade Slitting Overspeed SettingsOther Slitting TechniquesTrim DisposalTrim Chopping and ShreddingAutomatic Trim and Bleed Trim Thread UpPneumatic Trim Disposal SystemWINDING TECHNOLOGYAffects of Gage/Caliper VariationGage Band Randomization Cores and MandrelsRigidity and VibrationLay-On Roller IssuesLay-On Roll ParametersWinding Tension/Profiles by Products and ProcessesClear Film IssuesWinding with Edge KnurlsLaminated Web IssuesWeb Spreading During WindingIssues with Coated Low Strength FilmsWeb Strength IssuesSpeed IssuesTROUBLESHOOTING WEB HANDLING PROBLEMS Wrinkle ProblemsWeb Steering Problems Pucker Problems on Laminated WebsScratch ProblemsCurl ProblemsWeb Flatness ProblemsTin Canning/MD Wrinkles An MD Wrinkle TheoryTD WrinklesSlip PimplesSnail Trails and Other DefectsStatic ManagementGLOSSARY OF TERMS APPENDIX