Why large layers can create internal stress
- Cooling gradient
- Shrinkage
- Crystallization
Materials can have different additives
Fiber reinforcement
- stiffness vs brittleness
- nozzle wear
- flow behavior
Flame Retardant
- Certifications
- Processing temperature
UV resistant polymers
- Outdoor stability
- Degradation mechanisms
Moisture control is critical in pellet extrusion.
Unlike filament, pellets are typically stored and transported in bulk form.
Many engineering polymers are hygroscopic and absorb moisture from ambient air.
Even small amounts of moisture can lead to:
- Surface defects
- Bubble formation
- Reduced layer adhesion
- Inconsistent extrusion
- Mechanical weakness
Because pellet extrusion processes higher material volumes and thermal mass, moisture effects can be more visible than in filament printing.
For consistent industrial results, proper material drying is strongly recommended, especially for:
- PA
- PC
- PET-based materials
- Fiber-reinforced compounds
We offer drying solutions specifically designed for pellet-based large-format printing.
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