Ultrasonic Spot Welding
SONIC ITALIA SRL
Viale de Gasperi, 76
20017 RHO (MI) Italia
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Ultrasonic spot welding is where plastics are subjected to binding at certain points without the need of a specific joint design.It is commonly used to apply sturdy structural welding points in multiple parts, such as extruded sheets or plastic parts of complex shapes.
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Ultrasonic spot welding is widely employed to manufacture vacuum sealed blister packs in order to get an airtight closure to avoid tampering. Most thermoplastics can be spot welded using ultrasonics.
A custom-made sonotrode penetrates the top layer (the thinner of two parts) and fuses them together. The displaced molten part is then entrapped into a custom-shaped heading on a spot of the top layer, welding at an interface level. This heading’s diameter is on average three times as thick as the first stratum — i.e. a 1mm thick upper part will have approximately a 3 mm raised ring, and a height up to 1mm. The bottom side will show no signs of indentations or markings.
Composite sonotrodes with interchangeable tips are available as standard spot welding components. Tip shape selection and use is quick and simple, allowing for items with a 3 mm thickness to be soldered this way. The bottom layer can be thicker than the top one. The spot binding process is versatile, fast and easy to use, with a manual handgrip that facilitates maneuverability.
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Basic Guidelines for Ultrasonic Spot Welding
- Low pressures
- Medium to high amplitudes
- Rigid support placed directly under the contact spot
More Information about Sonic Italia’s Ultrasonic Solutions
If you further questions about spot welders, do not hesitate in contacting us. We will gladly answer any question you may have. Find out more by browsing our website. You will find a presentation of our product and research range there.
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- Nonwovens seamingSolutions for nonwovens and other synthetic fabrics. Materials can be either 100% acrylics or blends.
- Plastics assembly systemsThis method is chosen when high aesthetic quality and production speeds are required.
- Bonding a ultrasuoniCustomized bonding solutions for fabrics and nonwovens.
- Ultrasonic cuttingSonic Italia manufactures state of the art machinery for all industrial needs.
- Food cutting The right solution for clean, precise food portioning.
- Hermetical sealingFriction generates localized heat through molecular movement, which seals two plastic films at a contact point.
- Sewing machinesThis process allows you to seam, cut, slit, trim, tack, emboss, or cut and seal simultaneously.
- Portioning machineIntegrated systems for semi and fully automatic food portioners.
- Ultrasonic slittingThe most efficient solution for a clean cut synthetic textiles that prevents unraveling.
- Ultrasonic tools Tools for customized cutting and welding solutions.
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- Handheld Ultrasonic WelderManeuverable hand held tool for plastics spot welding.
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- Sealing for films and fabricsThis method has countless applications in the clothing, nonwovens, packaging and textile industries.
- Riveting Insertion of a threaded brass rivet within a plastic component.
- Ultrasonic blades Sonic Italia’s mechanical department develops blades of all shapes and designs.
- Raffia weaving cutter Linear and circular loom. Ideal for manufacturing raffia products.
- Ultrasonic Punching Punching solutions for plastic, acrylics and filtration fabrics.
- Rotative Bonding System For Pleated FiltersAn environmentally friendly bonding system designed for pleated filters that doesn’t require solvents or adhesives.
- Ultrasonic Sonotrodes Thirty years’ experience in manufacturing customized sonotrodes.
- Ultrasonic Spot Welding Available in both in automated and manual options.
- Stud WeldingThis is the common choice when similar plastic parts need to be welded at single point or multiple separate joints.