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Table Of Content
    Capacitors The leading supplier of capacitor film lines
    1. Brückner Maschinenbau
    2. Technical & Speciality Films
    3. Capacitors
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    Capacitors

    Expertise in both sequential and simultaneous stretching

    The preferred choice of raw materials for capacitor films are polypropylene (PP) and polyethylene terephthalate (PET). PP is independent of frequency and has a high impulse stability – therefore it can be used in AC and DC applications. 

    Compared to this, PET is heavily dependent on frequency due to its high loss factor and so it is mainly used in DC applications. Both types of capacitor film are produced by biaxial stretching where a more perfect crystalline structure is formed and the dielectric strength can be increased. 

    • Sequential stretching process for highest film quality: Optimised surface roughness, good self-healing effect
    • Simultaneous stretching process: Growing demand for quite special and high-value applications
      •  Low MD shrinkage even at low thickness
      •  Higher potential for thinnest film due to high stretching ratios
    1

    Extremely thin films

    and high-temperature films for future-oriented EV applications

    2

    High energy density film

    for renewable energy applications in the power industry

    3

    Close cooperation with raw material suppliers

    • High break down voltage
    • Material optimisation for the sequential as well as the simultaneous stretching process
       
    Film Type Thickness Range
    Capacitor film for metallising 2 - 12 µm
    Capacitor film for impregnation 10 - 12 µm

     

    The best of both worlds

    Battery separator films

    Advanced technologies for optical film grades

    Displays & screens

    The leading supplier for capacitor film lines

    Capacitors

    Line concepts for photovoltaic applications

    Solar backsheet

    Stretching holes – not as easy as it seems

    Nets & geo grids

    Elaborate features for industrial applications

    Cables, insulations, industrial films

    Solutions for future markets

    Flexible & printed electronics

    We have many more solutions:

    Packaging Film Lines

    Our solutions meet the challenges
    Read more

    New business development

    Discover new markets
    Read more

    Plant engineering

    More than film stretching lines: We have the right package
    Read more

    Back to the overview page

    Solutions for a profitable plastics film production
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