Polyester Film
As base film we use a biaxially oriented high purity polyester film (PET) which was developed especially for high dielectric demands.
This film can be metallized either with pure aluminum (99.98 %), zinc or zinc-aluminum alloy.
The electric resistance (metallization strength) and the kind of metallization will be according to the customer's requirements.
Here are our standard kinds of metallization available:
One side metallization with single side margin right / left
One side metallization with heavy edge type BLEND and single side margin right / left
Double internal series with one side metallization
Double internal series with one side metallization and heavy edge type BLEND
Double side metallization with coincidental margin
Double side metallization with diagonal margin
Other designs like multiple internal series, step, tapered and segment metallization and many others on request.
Type designations Polyester PT …
| PTPL | Plain-Film (non-Metallized) |
| PTMA (W) | Aluminum Metallized (wave cut) |
| PTMAD | Aluminum Metallized double side |
| PTMARD | Aluminum Metallized double side with Heavy Edge |
| PTMAR (W) | Aluminum Metallized with Heavy Edge (wave cut) |
| PTMAZR (W) | Aluminum Metallized with Zinc Heavy Edge (wave cut) |
| PTMZ (W) | Zinc Metallized (wave cut) |
| PTMZR (W) | Zinc Metallized with Zinc Heavy Edge (wave cut) |
| Nominal thickness (μm) | 0.9 / 1.2 / 1.4 / 1.7 / 1.9 / 2.4 / 3.0 / 3.5 / 4.0 / 4.8 / 6.0 / 7.0 / 8.0 |
| Special thickness (μm) | 3.3 / 4.3 / 4.5 / 4.6 / 5.2 / 5.5 / 8.5 / 9.0 / 12 / 15 / 19 / 22 / 23 |
| Slitting width | ≥ 2.25 mm |
| Free margin | ≥ 0.25 mm |
| Inside core diameter | 75 mm |
| Roll outside diameter | 155 mm / 165 mm / 180 mm / 200 mm / 240 mm / 300 mm / 330 mm |
| Typical properties | high mechanical strength. high dielectric and impulse strength. high thermal stability. high dielectric constant – and with that. high capacity with small capacitor volume |
