coverlay of PI with adhesive polyimide coating film
Good property of insulation and mechanism Good chemical stability. It resists most organic solvents Excellent flame retardant
CPI products have good electrical property,high bond strength and good dimensional stability etc.It is widely used in covering and protecting flexible printed circuits in cooperation with P-coppper laminate.
Main Properties:| Item | 25um(1Mil) | 50um(2Mil) | 75um(3Mil) | 100um(4Mil) | 125um(5Mil) | 150um(6Mil) | 175um(7Mil) | |
| Thickness Tolerance | ±3um | ±um | ±5um | ±6um | ±8um | ±10um | ±12um | |
| TensileStrength | MD | ≥150Mpa | ≥145Mpa | ≥140Mpa | ≥135Mpa | ≥130Mpa | ≥125Mpa | ≥120Mpa |
| TD | ≥145Mpa | ≥135Mpa | ≥130Mpa | ≥125Mpa | ≥120Mpa | ≥115Mpa | ≥110Mpa | |
| Elongation | MD | ≥45% | ≥45% | ≥45% | ≥45% | ≥45% | ≥45% | ≥45% |
| TD | ≥45% | ≥45% | ≥45% | ≥45% | ≥45% | ≥45% | ≥45% | |
| Breakdown Voltage | ≥200Mv/m | ≥180Mv/m | ≥160Mv/m | ≥140Mv/m | ≥130Mv/m | ≥120Mv/m | ≥110Mv/m | |
| Surface Resistance | ≥1.0×1015 | ≥8.0×1014 | ≥5.0×1014 | ≥1.0×1014 | ≥1.0×1014 | ≥5.0×1013 | ≥5.0×1013 | |
| Volume Resistance | ≥1.0×1014 | ≥8.0×1013 | ≥5.0×1013 | ≥1.0×1013 | ≥1.0×1013 | ≥5.0×1012 | ≥5.0×1012 | |
coverlay of PI with adhesive polyimide coating film
