1, is a semi-crystalline plastics, injection molding cycle can be completed quickly (mold allowed), difficult to clean the barrel and screw. |
| 2, melting point 225 ℃ (PET was 260 ℃), the combustion flame was white, issued a smoke from the fire go out automatically to form a smooth surface, leaving a carbon stains. |
| 3, baked material: 120 ℃ / 3 ~ 5 hours. Molding materials drying 2 hours, when adding outlet material or humid weather from February to May when baked material 5 hours. |
| 4, high mold temperature can reduce plastic shrinkage after, to avoid staying too long barrel, melt temperature 230 ~ 260 ℃ withoutetc., to 240 ~ 245 ℃ better. |
| 5,270 ℃ temperature above may cause the plastic rapidly degraded, 290 ℃ stays less than two minutes, 220 ℃ about 12 minutes, PBT poor heat resistance, including glass fiber reinforced material than the unreinforced to a higher temperature (about 10 ℃). |
| 6, should use high-speed injection (especially GF level). |
| 7, back rubber speed as low as possible, backpressure 7BAR. |
| 8, degraded due to overheating, the screw and barrel must scrape residue removal solidified melt, with HDPE or PP washing machine. |
