The Moldflow Design Principles are a set of rules that influence the design of a part and tools to optimize the filling of a part. When these principles are followed, higher quality parts and faster cycle times are the result. Not following these plastics design principles leads to problematic designs.
These plastics design principles include:
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Unidirectional and controlled flow pattern
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Flow balancing
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Constant pressure gradient
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Maximum shear stress
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Uniform cooling
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Positioning weld and meld lines
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Avoid hesitation effects
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Avoid underflow
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Balancing with flow leaders and flow deflectors
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Controlled frictional heat
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Thermal shutoff for runners
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Acceptable runner/cavity ratio
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