Joining

FRIMO Infrared Welding

High performance joining for large scale plastic components with 3D joining outlines

Thermoplastics can be welded together using INFRARED radiation. Thereby some of the radiation is absorbed by the material and transformed into heat. As a result, the surface layer is melted and the plastic components can be joined by pressing on to one together. Infrared heat is transferred without contact. The heat input is fast, specific and energy-efficient.

Power-controlled and time-controlled INFRARED emitters allow for precise and controlled welding processes. Typical applications are, for example, instrument panels, door trims and center consoles with complex, 2D or 3D welding contours. Particle-free welding is of particular relevance used for joining of air-ducting pipes, fluid containsers, tank systems and filters or filter housings.

Comparison of the joining processes

Depending on the product an application, the demand on quality and efficiency of joined plastics can increase:

  • No particles, e. g. for air- or oil-ducting components (more and more regulated by OEM norms and rules)
  • Increasing use of reinforced high-performance plastics, e. g. glass fibre
  • Reinforced plastics for structural components and lightweight construction
  • Higher yield strength in security-relevant areas
  • 100 % gas-tight
  • Welding of different materials
  • Design freedom, with view to complex 3D-geometries 
  • Productivity, economic viability and energy efficiency
  • etc.

The advantages at one glance:

  • Non-contact method
  • Plastification of complex, three-dimensional contours
  • Higher strengths
  • Particle-free process
  • Absolute air- and gas-tightness
  • Joining of different materials, e. g. TPE with PP GF 30
  • Simple machine technology, large parameter window
  • Wide range of IR machines
  • All types of tooling and emitters
  • Numerous references
  • Know-How for all known joining processes