Plastics Joining


Core Plastic Welding Processes

These are the core processes of our plastic-welding-based services.

  • Ultrasonic welding and related processes (swaging, cutting, sewing, and more)
  • Laser welding and surface treatment
  • Infrared welding (through-transmission and standard)
  • Friction welding (spin, linear, etc.)
  • Vibration welding
  • Thermal welding (staking, hot plate, film sealing, etc.)
  • Extrusion welding
  • Hot gas welding
  • Implant and radio frequency induction welding
  • Resistive implant welding
  • Adhesive bonding

Plastics Testing & Process Support

No process is complete without thorough testing and analysis. Here is a selection of techniques we employ to be sure we’re developing the most effective plastics solution.

  • Dynamic mechanical analysis (DMA)
  • Differential scanning calorimetry (DSC)
  • Microtome testing
  • CT scanning
  • CT metrology for dimensional analysis
  • Material selection and weldability testing
  • Joint and tooling design
  • Fourier transform infrared spectroscopy
  • Microscopic analysis

Proven Solutions for Plastics Joining

EWI has more than a 25-year history of innovation with plastics welding and joining for across-the-board manufacturing sectors. We’ve been an instrumental part of some proud breakthroughs over the years:

  • Developed a method to powerfully bond a polymer film to a thin metal sheet without the use of adhesives
  • Published peer-reviewed research on joint design’s effect on ultrasonic welding of polybutylene terephthalate (PBT), which proved that a less-expensive, longer-lasting energy director could be used with servo motion control during ultrasonic welding * Patented ultrasonic technology, UltraThinSeal™, for high-speed package film sealing that can be easily integrated into most standard thermal sealing bagmakers


View Plastics Joining Resources

Laser Plastic Welding


The Crazy Brilliance of Radio Frequency Welding

When it comes to welding plastics, three contributing factors matter: heat, force, and duration. While there are multiple ways of [...]

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New Techniques for Joining Plastic to Metal (external link)

If it rolls, floats or flies, light weight is always good. Just ask anyone who’s ever been in a Pinewood [...]

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Why Polypropylene Cannot Be Welded with ABS

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Ultrasonic Plastic Welding


Polymer to polymer, polymer to non-polymer, never-been-tried-before materials?

Let us know the goal.

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