Our welding technologies

Mecasonic is THE assembly solution for thermoplastics and non-ferrous metals. To meet our customers’ needs, we’ve developed different techniques which are specific to each field of application and adaptable to each project. We now offer ultrasonic, spin, hot air/thermal, hot plate, vibration and laser welding and assembly solutions.

Ultrasonic welding/

Ultrasonic welding is a process by which two thermoplastic parts or two non-ferrous metal parts can be assembled together.

Ultrasonic welding consists of generating high-frequency vibrations and transmitting them towards thermoplastic parts or creating friction on non-ferrous metals with a vibrating tool known as a sonotrode. The weld is completed with the heat as the two parts rub against each other. It enables neat and clean assembly of materials without any extra material, all while creating a solid and long-lasting seam.

Ultrasonic cutting involves a simple principle: the vibrating cutting edge (titanium sonotrode) is designed to work at a defined amplitude (30 to 100 µ) and frequency (20 or 30 MHz), depending on the needs. It creates acceleration of more than 105 g to cut food products with a press that moves up and down without any flash or product loss.

Spin welding

This process is recommended by Mecasonic when welding parts with circular joints.

Spin or circular friction welding consists of producing the melting heat required by rotating one part around another which is fixed all while simultaneously applying pressure. The friction produced leads to a quality weld with tight sealing and much less scrap.

Thermic welding

In hot air welding machines, parts are locally heated using hot air nozzles at a temperature that’s appropriate for your part and material. They’re then cooled using shaping tools. The hot air welding technique can do all-in-one vertical and horizontal welding and can be applied to all thermoplastic combinations.

Hot plate welding

The hot plate welding process is comprised of two phases:

The two parts to be assembled are pressed against a heated tool, the temperature of which is slightly higher than melting temperature. When adequately melted, the two parts are separated and the heated tool is removed. The two parts are pressed against each other until they solidify.

The hot plate welding process offers mechanical resistance of up to 1/3 higher than vibration welding, tighter sealing, controlled, non-detachable flash, zero pollution in the components welded and freehand finishes on almost all welded surfaces.

The heating parts may use infrared technology.

Vibration welding

The vibration welding method consists of transforming friction energy into heat by applying the appropriate pressure during the vibration and cooling phases.

This process is perfect for asymmetric parts.

Laser welding

Laser welding is a technique that requires high-density energy, the source of which is light. It enables quick, precise and high-quality welding.

Laser welding consists of simply assembling two thermoplastic parts using a laser beam which raises the temperature of the materials locally to the melting point. The molecules of the two melting parts then come under a controlled pressure effect, join together and form a seam, the breaking strength of which is at least the same as the raw materials. In order to do laser welding, you need a part that lets the laser beam pass through and another which will absorb it.

Our welding applications

Find out where our technologies are used: in food, automobiles, cosmetics, household appliances, electronics, recreation and leisure, medical products, metals, packaging and textiles and much more.

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