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What are the advantages of infrared welding over hot plate welding of thermoplastics?

TWI Frequently asked questions

by Felicity Chipperfield

Infrared welding is generally faster than hot plate welding with typical welding times being reduced by around 50%. The fact that heating is achieved without physical contact eliminates the possibility of contamination from the hot plate entering the weld.

One further advantage claimed by the infrared welding process is the ability to weld low modulus materials such as thermoplastic elastomers. This is because there is little or no shear of the weld-piece during heating.

For specific enquiries please contact the Polymer Group at TWI (e-mail: pol@twi.co.uk).