Mold Manufacturing > Quality > Testing Equipment
The Polarized Light Box is a tool to detect various defects in preforms for reheat blow molding, such as bubbles, cold and hot material, heat spots, moisture, degraded material, slow fill, stress in gate area, and sinks in transition areas. This brushed stainless steel and glass base with an aluminum upper viewer is used in conjunction with R&D/Leverage’s Preform Defect chart. This chart enables a technician to identify problems so process changes can be made.
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