Black Specks or Streaks troubleshooting

By |2021-09-23T15:39:37+08:00September 23rd, 2021|Categories: troubleshooting|Tags: , , |Comments Off on Black Specks or Streaks troubleshooting

What is Black Specks or Streaks

Black or brown specks are spots of degraded plastic or dark spots that show on the injection molded part. This Black or brown specks defects will be more visible on white color or clear plastic molded parts, we also call as carbon buildup, sometime we normally think it is material mix issue.

Black or brown specks

Black or brown specks

Black Specks Troubleshooting Molding Process Issues

If Black or brown specks defects caused by the plastic has been degraded to a charred state. This is most often a case of material that has been in the barrel at temperature for too long. There are several […]