Complaint
Polyester film(Mylar film) is used in fiberglass reinforced pipe, tank, container for the mold releasing and surface calendaring.Inside of polyester film is covered with silicone oil, it is more effective to keep mould release and surface calendar.
The thickness of polyester film varies from 15micrometers to 125micrometers.
General thickness: 25um, 30um, 35um, 50um, 75um.
| Model liquid | Unit | Time | Temperature | Maximum allowable limit | Test result |
| Distilled water | Mg/inch2 | 24hr | 120°F | 0.5 | <0.1 |
| Normal Heptane | Mg/inch2 | 24hr | 120°F | 0.5 | <0.1 |
| 8%Ethyl alcohol | Mg/inch2 | 24hr | 120°F | 0.5 | <0.1 |
