The ultrasonic welding process works through the translation of AC current into mechanical vibrations using piezo-electric ceramics. The vibrations are then passed through the part to the joint at which point they cause stress and strain in the contact area between the two parts which leads to localized heating and melting of the polymer. Ultrasonic welding typically has weld times from one-tenth to two seconds and Dukane's ultrasonic welding equipment can handle parts from approximately one-eighth inch diameter at high frequencies up to twelve inches square at low frequencies.
The vibration welding process works through either linear or orbital motion of one part relative to the other. This results in surface friction that leads to heat generation and the formation of a melt layer at the joint. Vibration welding typically has weld times from one to five seconds and Dukane's vibration welders can handle parts from approximately two inch diameter up to five feet long.
Ultrasonic food processing involves a vibrating knife producing a nearly frictionless surface which does not deform food products and to which they do not stick. The surface cleanly cuts or slits products including fillers such as nuts, raisins, dried fruit or chocolate morsels without displacement or plowing.
Fabric & film processing is the bonding, slitting, or sealing of fabrics and films containing thermoplastic material(s). Typical thermoplastic materials found in fabrics and films include acrylics, nylon, polyester, polyethylene, polypropylene, polyvinylchloride, and urethane. Products from the textile, apparel, nonwovens, packaging, medical and automotive industries all benefit from the fast, clean, and economical fabric & film processing techniques.
This process works through rotational motion of one part relative to the other. This results in surface friction that leads to heat generation and the formation of a melt layer at the joint. Spin welding typically has weld times from one-half to five seconds and Dukane's spin welding equipment can handle parts from approximately one-half inch diameter using high speed motors up to nine inches diameter using high torque motors.
Thermal Presses heat the staking post/insert while applying pressure axially to permanently set the parts. Thermal press applications include heat staking, inserting, embossing, date coding and degating.
In the hot plate welding process, the fraying surfaces of the two parts are heated through conduction, convection and/or radiation from an actual heated platen. The two parts are either pressed against the hot plate, or held next to it for some period of time, then the hot plate is removed and the parts are pressed together to form the weld. Hot welding typically has weld times from ten to twenty seconds and Dukane's hot plate welding equipment can handle parts from approximately one inch diameter up to five feet long.
Nearly all thermoplastics can be welded using the proper laser components. Special additives/pigments also allow laser welding of dark to dark materials as well as transparent to transparent combinations. Laser welding of thermoplastics depends on many of the same rules of resin compatibility that the other processes do, but is more forgiving of resin chemistry or melt temperature differences than most other plastic welding processes.