Impulse is a technology where a steel band is covered with PTFE tape and where electrical current is running through the steel band. The level of current generates heat which is transferred mechanically to the fabric.
Advantages with impulse welding:
+ Can be used for non-dielectric materials
Disadvantages with impulse welding:
- The weld is limited to the maximum length of the tool (normally never longer than 6 meter) – if not used as an accessory on a Forsstrom machine when it can weld the entire length of the welding table
- A negative effect with this technology is that the steel band will be significantly hotter towards the ends on the steel band, which can cause burns on sensitive fabrics