Producing a flawless dome-shaped plastic profile is one of the most deceptively difficult challenges in extrusion manufacturing. Unlike flat strips or simple tubes, where gravity and cooling forces are predictable, a domed surface introduces complex variables like non-uniform cooling rates and significant die swell. Engineers often find that a design appearing perfect in CAD fails miserably on the production floor, collapsing into an oval or warping due to internal stress during the cooling phase.
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