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What is Infrared Welding of Thermoplastic?

This process uses Infrared radiation which is absorbed by the thermoplastic material and transformed into heat. As a result, the faying surface of the plastic part is melted, and the components are joined by pressing them together. This is a fast, non-contact, particulate free welding method.

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Material Consideration

  • PolyPropylene (PP)
  • PolyStyrene (PS)
  • PolySulfone (PSO-Udel)
  • Thermo-Plastic Elastomers (TPE-Santoprene)
  • Acrylonitrile Butadiene Styrene (ABS-Cycolac)
  • PolyOxy-Methylene (POM-Acetal & Delrin)
  • PolyAmide (PA-Nylon & Zytel)
  • PolyButylene Terephthalate (PBT-Valox & Enduran)
  • PolyEthylene (PE)
  • PolyEthylene Terephthalate (PET-Polyester)
  • PolyMethyl MethAcrylate (PMMA-Acrylic & Lucite)
  • PolyPhenylene Oxide (PPO-Noryl)
  • PolyPhenylene Sulfide (PPS-Ryton)

Joint Design Considerations

During the welding process material displacement is typically 0.030″ in total. This results only from 0.015″ material displacement per side from material fusion during the weld/seal step as there is no displacement during the infrared melt step.  However this varies depending on part material and geometry.

Advantages of Infrared Welding