Ultrasonic spot welding
Ultrasonic spot welding: a process where plastics can be spot welded without needing a specific joint design. Spot welding is popularly used when strong structural welding points are desired in large workpieces, sheets of extruded or cast plastics, and parts with complex shapes where accessibility is difficult.
It is also used to weld vacumn formed blister packs to provide tamper evident sealing.
Most thermoplastics can be ultrasonically spot welded.
In ultrasonic spot welding, a specially designed spot welding tip penentrates the top layer (the thinner of the two parts), and part way through the second layer, melting the plastic on its way.
The displaced melt is trapped into an aesthetic head on the top layer, and the weld occurs at the interface. The diameter of this head averages three times the top layer thickness -- i.e. a 1mm thick upper part will have a raised ring, approx dia 3mm, and height upto 1mm. The bottom side shows no indentations or markings.
Tapped Catenoidal Horns with replaceable tips are available as standard for spot welding applications. Tip selection and use (in accordance with top layer thickness of part to be welded) is thus easy and simple. Parts up to thickness of 3 mm (top layer) can be ultrasonic spot welded in this way. The bottom layer may be any thickness greater than the top layer. The Ultrasonic Spot Welding process is versatile, fast and easy to use - the ultrasonic stack is often hand-held, and aligned manually.
Basic Guidelines for Ultrasonic Spot Welding
- Medium to high amplitude
- Rigid support directly under the weld are
More information about ultrasonic spot welding and Sonic Italia
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Nonwovens ultrasonic welding
Ultrasonic welding solutions for welding non-woven fabrics. Materials can be 100% acrylics or blends.
Plastic assembly systems
Ultrasonic plastic assembly is used when high aesthetic quality and high production speed are required.
Customized ultrasonic bonding solutions for synthetic fabrics and non-wovens.
Sonic Italia manufactures up to date machines for ultrasonic cutting of thermoplastic materials.
Ultrasonic food cutting
Ultrasonic blades suitable for almost all kind of food cutting with different frequencies.
Ultrasonic technology generates the heat for a friction process and for sealing process from within the plastic film.
Ultrasonic sewing machine
The ultrasonic process is versatile - you can seam, cut, slit, trim, tack, emboss, or cut and seal simultaneously.
Ultrasonic cutting systems integrated in automatic or semi automatic slicers.
Ultrasonic slitting is the most efficient solution for a clean cut which prevents unraveling.
Ultrasonic tools for customised solutions for cutting and welding.
Sonic Italia produces ultrasonic machines for welding thermoplastics, which can be applied in several industries.
Hand-held Ultrasonic Welder
Manual ultrasonic cutting and welding solution for manual cutting and spot welding.
Manure Belt Welder
Discover more about our manual ultrasonic welder designed for manure and egg conveyor belts.
Ultrasonic cutting sealing films fabrics
Ultrasonic sealing of films and fabrics: applications in clothing industry, non-woven, packaging and textile.
Ultrasonic insertion of a threaded brass rivet in a plastic component.
Sonic Italia internally produces the ultrasonic blades with different shapes and designs.
Ultrasonic Linear Circular Weaving Cutter
Ultrasonic linear and weaving cutter. Ideal for manufacturing rafia products.
Ultrasonic punching solutions for plastic, acrylics and filtration fabrics.
Ultrasonic Rotative Bonding System For Pleated Filters
The rotary bonding system designed for pleated filters is "green" because it does not require the use of solvents or adhesives.
Ultrasonic sontorodes: thirty years' experience in manufacturing customized sonotrode.
Ultrasonic Spot Welding
Ultrasonic spot welding is possible both in automations and manually.
Ultrasonic Stud Welding
Ultrasonic Stud Welding is the suggested option when similar plastics parts need to be welded at single or multiple localised points.