A warm welcome to the latest edition of the Vent-Axia Specification Range catalogue.  As part of the ongoing

A warm welcome to the latest edition of the Vent-Axia Specification Range catalogue.  As part of the ongoing drive for energy efficiency within Europe, ventilation devices over 30 Watts come under the scope of the Energy Related Products Directive that came into force on 1st January 2016. The legislation sets minimum performance criteria across a range of fans and ventilation devices under two sets of legislation; ‘residential’ ventilation and ‘non-residential’ ventilation. As a result of the legislation we have reviewed our products and where required made updates to ensure they comply. In line with Vent-Axia’s drive to provide the best solution for our customer, we have taken the opportunity to update and improve some products at the same time as bringing the products in-line with ErP regulations. We have also improved the way we supply some of them – giving you more choice and flexibility over how you stock and sell the products. This edition of our Specification Range catalogue shows the continued investment we are making in our products and services to improve and add to our already comprehensive range. In this catalogue, we have bought together our Lo-Carbon resident...

Martin Frost – UK sales manager, Telsonic UK the wholly owned subsidiary of Telsonic AG Switzerland,

Martin Frost – UK sales manager, Telsonic UK the wholly owned subsidiary of Telsonic AG Switzerland, talks to AZoM about the ultrasonic torsional welding. In plastic welding, conventional LINEAR ultrasonic welding heads are arranged vertically and use a converter, operating at between 20kHz and 40kHz together with a booster, to increase the amplitude. The sonotrode or horn is in turn coupled to the booster, which utilises the change in cross sectional area of the sonotrode to magnify this amplitude at the working face. This configuration of components is known as the Ultrasonic stack. By using a pneumatic actuator in conjunction with the energy being delivered via the sonotrode, the process creates local heat and melt through ultrasonic agitation of the polymer molecules. The pressure from the pneumatic actuator force collapses the molten joint feature and holds it in position until the weld joint has solidified. When used in metal welding (usually non ferrous metals) LINEAR ultrasonic welding operates in the horizontal plane with the ultrasonic stack in the horizontal mode. This oscillates the top part of the welded assembly about the bottom part as a friction weld. This cause...