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Where Gas Assist Is Not the Best Choice
Is a MoldFlow Analysis Necessary?
Designing for Gas Assist
19 other sections not shown
allow assist injection molding bottled gas cause clamp tonnage cold slug cold sprue compressor computer tower conventional injection molding conventional molding cooling cost ejector pin eliminate Figure gas assist injection gas assist molding gas assist process gas assist technology gas channel design gas control unit Gas delay timer gas is injected gas line gas penetration gas permeation gas pins gas pressure profile hesitation lines hole hot runner system initial gas injecting gas Injection first stage injection molding machine Injection second stage leak manifold system mold cavity mold surface mold temperature mold-flow molder molding process needed nitrogen gas nominal wall thickness nozzle tip percent plastic polypropylene prevent gas Problem or Defect reduced resin fill resin injection resin shutoff valve screw seconds at 1500 seconds Injection short shot shrinkage sink marks spillover pocket sprue break thin wall thin-wall sections tion tool design tryout wall sections warpage