Click to enlarge1. Ultrasonic systems allow to weld the edge of fabric in one single operation ! Our technology is based on the
piezoelectric principle, to transform an electrical signal in mechanical vibration.
2. These oscillations will be amplified by the booster and converter, thus creating a hammer. The converter converts electricity into high frequency mechanical vibration. The active elements are usually piezoelectrics ceramics.
The booster (optional) serves as an amplitude transformer. Amplitude magnification or reduction is achieved by
certain design features or the geometrical shape of the booster.
3. The sonotrode, or horn, is the active part of the ultrasonic unit. It is in contact with the fabric and acts as a hammer against the counter-tool. This system will enable to melt the fibers within the fabric by mechanical action only (hammering), enabling to obtain a very clean and flexible melting without any burning or color change. The sonotrode and counter-tool design will be adapted to the operation to be performed.
4. The most simple way of welding thermoplastic materials is to use the ultrasonic manual welding device. This is
particularly well suited for applications in prototype design, for processing of single products, small series and rep-
airs. Regardless of caulking, swaging, staking, cutting, or spot welding, the HSG ultrasonic manual welding device is easy to use, provides variable power rating, and can be equipped with all types of conventional sonotrodes.