• Weltweit führender Hersteller von
    hoch qualitativem metallisiertem Film
  • Weltweit führender Hersteller von
    hoch qualitativem metallisiertem Film
  • Weltweit führender Hersteller von
    hoch qualitativem metallisiertem Film
  • Weltweit führender Hersteller von
    hoch qualitativem metallisiertem Film
  • Weltweit führender Hersteller von
    hoch qualitativem metallisiertem Film
  • Weltweit führender Hersteller von
    hoch qualitativem metallisiertem Film
  • Weltweit führender Hersteller von
    hoch qualitativem metallisiertem Film

Slitting Technologies

Wave-cut

The edge-cut, normally in a straight line, of the capacitor film is done with highest precision in the requested width. For a series of capacitor designs, however, this straight-cut offers disadvantages that can be minimised by Steiner´s wave-cut technology.

1. Inside the capacitor the mechanical contact between the end-spraying layer and the metallized film is an extremely important factor for a good dissipation factor and a high pulse capability. A contact edge in wave-cut form in combination with an optimised winding off-set can significantly improve the contact of the end-spraying layer.

Flake-off of end-spraying:
bad contact to the metallized film
End-spraying layer of a face side with wave-cut on the contact edge

2. Thin polypropylene films wound with a high tension are particularly prone to mechanical stress at the margin side. Damage can then easily occur on the adjacent metal layer. A wave-cut at the free margin edge spreads these stresses and reduces the risk at high operating temperatures or high currents.

Occurance of a stress zone
Compression damage at winding off-set without wave-cut

Available wave-cut types (margin and contact side)

Designation Double amplitude=2 WA Amplitude=WA Wavelength
W15-150 0.15mm 0.075mm 1.50mm
W30-250 0.30mm 0.15mm 2.50mm
W80-500 0.80mm 0.40mm 5.00mm