Extrusion
Extrusion is affected by material, color, and moisture consistency, so the solution follows the real issue.

Application context
Unstable surface or weak color coverage in extrusion?
What happens in this process?
In extrusion the melt passes continuously through a die, so any inconsistency in material, moisture, or color shows as an uneven surface or weak color coverage along the whole product. Because it runs continuously, a wrong choice repeats fast.
Common production issues
Relevant products
How do you select the first product to trial?
Unstable surface with moisture → desiccant; weak white or black coverage → the right masterbatch grade; yellowish white → optical brightener (OB). Selection depends on thickness and line speed — send the details on WhatsApp.
Test a sample on your material. Then decide.
Tell us the problem and application so we can suggest a product to trial.