Encyclopedic Dictionary of Polymers

2011 Edition
| Editors: Jan W. Gooch


  • Jan W. Gooch
Reference work entry
DOI: https://doi.org/10.1007/978-1-4419-6247-8_12780
The joining of two or more pieces of thermoplastic by fusion at adjoining areas, either with or without addition of plastic from another source (such as welding rod). The term includes heat sealing, with which it is synonymous in some countries, but in the U.S. the term heat sealing is limited to film and sheeting. Welding is almost always done with two (or more) pieces of the same plastic, but it can be done with compatible plastics that melt in the same temperature range. The various welding methods are described at the entries listed below.

Butt Fusion

Impulse Sealing


Dielectric Heat-Sealing



Extruded-bead sealing

Jig Welding


Friction Welding

Spin Welding


Heat Sealing



High-Frequency Welding

Thermoband Welding


Hot-Gas Welding Ultrasonic Welding


Hot-Plate Welding

Vibration Welding

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Jan W. Gooch
    • 1
  1. 1.AtlantaUSA