High-frequency welding machines using molecular friction

Capacitive resistance welding of plastic films and moulded parts via an alternating high-frequency electromagnetic field that causes the dipoles of the plastic to vibrate, thus heating them:

  • High-frequency generators with an output of 1,500 – 40,000 W; stable working frequency of 27.12 MHz.
  • Compliance with the international telecommunication authority requirements for frequency-stable, harmonic-free, low-radiation generators.
  • Modular design and grid construction make it possible to expand the machines to include additional functions, adapt them to new products and conditions, and to enhance performance.
  • Energy-saving process with absolute protection of electrodes (wear-free).
  • Very precise work is possible, because only the areas being joined are heated.
  • High weld quality thanks to infinitely adjustable pressure and penetration depth.
  • Particularly durable weld through cooling of the weld under pressure with the device closed.
  • Even welding of different materials through adaptive regulation of the power.
  • For plastic parts with dipoles, especially PVC (polyvinyl chloride), but also PA, ABS, linear PUR, CA films with plasticiser additives, CAB and low molecular weight PMMA.

Application examples:

  • Office organising materials: Ring binders, file folders, loose leaf binders, clear plastic folders.
  • Advertising materials: Pocket calendars, photo albums.
  • Packaging materials: Blister packs.
  • Medical: Blood bags, dialysis bags.
  • Automotive industry: Automobile interior trim.
  • Nuclear research: Waste disposal.
  • Upholstery industry.

 

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