Welcome to Telsonic - Ultrasonic Technology
Ultrasonic Plastic Assembly, This general
heading covers a number of different joining techniques for thermoplastics in
which mechanical vibration is used to generate homogeneous connections by
generating frictional heat. They include ultrasonic plastic welding, forming (riveting, swaging,
spot welding, embedding), sealing, cut’n’seal processes and torsional welding.
Nonwovens, fabrics and interlaced yarns made of synthetic fibre materials can be
cut to shape or trimmed quickly and cleanly with the aid of the ultrasonic
process, and the cut ends are sealed in the same operation. This cutting and
sealing method, referred to by TELSONIC simply as cut’n’seal, delivers
non-fibrous, soft edges even with two or multi layers of material. The cutting
contour is always defined by the anvil, while the sonotrode has a flat surface.
Recognised for many years as a pioneer within the industrial ultrasonic’s industry, Telsonic continues to develop new technologies and processes that open up new opportunities and applications for ultrasonics across many different industries. The packaging industry is the latest to benefit from a series of new and in certain cases unique, product and concept developments, targeted at sealing applications on flexible and rigid packaging.
|Ultrasonic Plastic Welding|
plastic welding is associated with the welding of acrylics and
polycarbonates, this is usedin many different products like Blister
Packs, dashboards, small consumer Goods, Cartons and much more... Ferrous and non ferrous metals can also be welded.
For Ultrasonic Metal Welding the
molecular connection between the two products is created under high pressing
pressure once the surfaces of the materials have been cleaned of oxides and
other contaminants with the aid of ultrasonic vibration.
Cleaning methods based on ultrasonic's exploit the cavitation principle: billions
of tiny imploding gas
bubbles in the cleaning fluid generate shock waves which loosen the dirt
particles and force them free.
The cleaning effect can be optimised even further by carefully adding cleaning
agents, heating the
cleaning tank and by adding mechanical agitation to the process.
|Taking the Heat Out of the Process|
Historically, heat sealing has been the technology used on many HFFS (Horizontal
Form Fill Seal) and VFFS (Vertical Form Fill Seal) packaging machines. Although
this has become the established process for many applications, it can have its
drawbacks. Common issues include, leakages attributed to product contamination
within the seal area, coarse particles such as sugar or coffee causing
puncturing, odours from trapped product and unsightly burnt edges.
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