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SOFT-SHIELD 3500 achieves cost, performance and assembly benefits in LCD TV application

25th July 2007

ES Admin

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Using its SOFT-SHIELD 3500 EMI shielding gasket material, Chomerics Europe has been able to provide a solution for an application on LCD televisions that delivers multiple benefits. The material, which consists of an electrically conductive fabric wrapped around a urethane foam core, is able to provide a complete solution in a single component. Prior to the adoption of SOFT-SHIELD 3500 for this application, EMI shielding was achieved using spring fingers, with a separate non-conductive, elastomeric material used to provide a gasket.

Replacing the existing solution with the Chomerics material gave a significant cost reduction plus a number of important performance benefits. These included vibration dampening and UL94V0 flammability rating. Chomerics was also able to achieve supply benefits including a reduction in lead-time of approximately 50%.

The Chomerics solution involves the production and supply of a number of custom profiles. These are kitted and labelled according to the TV type on which they are to be used. The kits typically comprise a number of pieces of SOFT-SHIELD 3500, each part having a pressure sensitive adhesive backing and an extended liner to speed-up and ease assembly.

The construction of SOFT-SHIELD 3500 gives an extremely low closure force of typically less than 1lb/in (0.175N/mm). The material has an operating temperature range of –40ºC to +70ºC and is available in more than 90 different profiles. The material can be manufactured in Chomerics facilities in the USA, Europe and Asia.