Why and how to dry materials before molding
Hygroscopic plastics absorb moisture. At processing temps (180-300C), moisture causes splay, bubbles, brittleness.
| Material | Temp | Time |
|---|---|---|
| ABS | 80-85C | 2-4h |
| PA6/66 | 80-90C | 4-6h |
| PC | 120-130C | 4-6h |
| PET | 130-160C | 5-7h |
| PMMA | 80-90C | 3-5h |