Hot wedge

The hot wedge is a process where the material is dragged against a hot surface (wedge) and where rollers press the preheated surfaces together.

Hot wedge is another technology for joining plastic materials.

Advantages with hot wedge:

+ Can be used for non-dielectric materials
+ Most hot wedge systems have very helpful attachments for overlapping, hemming and tubing products

Disadvantages with hot wedge:

– Difficult or impossible to remake the weld if the result is not satisfactory
– Requires a skilled operator
– Noisy process which can create hazardous fumes/gas
– Does not work well on thicker materials (materials heavier than 1000 g/m²)
– Difficult to create welds that are air-, liquid-, and gas-tight