Sonotronic Nagel GmbH
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Ultrasonic Systems for Welding, Cutting, Punching and Embossing

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As an ultrasound specialist, SONOTRONIC provides solutions for intermittent welding, cutting, punching and embossing of thermoplastic textiles and nonwoven. Injection mouldings can also be joined to textiles using ultrasound. High-strength, visually appealing welds and cleanly sealed cut edges that do not fray are significant advantages of ultrasound compared with other methods, such as sewing with thread or joining and separating with heat. Ultrasound offers the additional advantages that the elasticity of the material can be maintained by partial spot welding and injection mouldings can also be welded to thermoplastic textiles. Cut&Seal applications, where material is trimmed or cut out in one process and simultaneously welded at the edges, have become established.

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Our ultrasonic systems for welding, cutting, punching and embossing are already used in various industries, for example:

  • Welding corsetry, surgical gowns, sports equipment or Velcro fastenings
  • Cutting to length, trimming and punching of textiles, such as seat belts, airbags or dog leads
  • Embossing (company) logos in corsetry or working clothes.
Applications:
Technical data:
  • Ultrasonic frequencies of 20 or 35 kHz
  • Generator output of between 400 and 4000 kW
  • 200 to 3000 N welding force
Characteristics and advantages:
  • Visually appealing weld
  • Cleanly sealed and embossed cut edges without fraying
  • Cold tools:
    • Material only becomes warm in the welding, separating or embossing zone
    • Radiant heat has no external effect on the material
    • No smoke
    • Possible to work heat-sensitive materials
  • High-strength material and space-saving joins
    • Of textiles to each other
    • Of (elastic) textiles to injection mouldings
    • No adhesives or other additives or threads used
    • Elasticity maintained by spot welding.
  • Smaller machines
    • Use of ultrasound reduces application of force
    • Short cycle times
    • Rapid tool change