• Flow Marks - plastic injection troubleshooter
• Description:
Blush and flow marks are the result of variations in material
temperature, caused by the temperature gradient between
machine nozzle and mould sprue bushing. A halo around the
direct sprue is the result of cold material in the nozzle tip
section. Eliminating the temperature gradient will minimize
the blush and halo effects.
• Causes:
• Actions:
contact: jmfalcao@moldplast.com