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Manufacturing/Packaging??

Flexible EM wave film withstands 2 million folds

Posted: 04 Oct 2007 ?? ?Print Version ?Bookmark and Share

Keywords:flexible electromagnetic wave absorbing film? EMC?

Taiyo Yuden has released the EMSEAL TM SFX1, overturning the conventions for wave absorption sheet with a super flexible electromagnetic wave absorbing film that can maintain excellent electromagnetic wave absorption performance through more than 2 million folds and bends. With increasingly high performance of mobile phones, notebooks, digital still cameras, portable DVD players and other compact digital equipment and multifunctional electronic devices, there is an increasing need to take measures against EMC and noise. Noise can take the form of conductive noise transmitted along wiring and radiation noise transmitted through space. While conductive noise can be suppressed using capacitors or inductors, suppression of radiation noise requires wave absorption sheet or shielding materials that cut off radio waves.

Conventional wave absorption sheets, however, could not be used in devices with frequent bending, and so could not be directly applied to sources of radiation noise on flexible PCBs that connect a display device or other movable parts and a motherboard. In response, Taiyo Yuden combined its advanced materials technology with EMC evaluation technology to disperse a metallic magnetic powder with high permeability into an organic polymer binder with superior flexibility and reliability. It was further combined with a heat-resistant seal adhesive, resulting in the development of the EMSEAL TM SFX1, a revolutionary electromagnetic wave absorbing film capable of attachment to curved areas.

Mass production of the product will begin at the Haruna Plant in Takasaki city, Gunma prefecture in December, at a pace of 500m? per month. Film appearance, dimensions, and thickness will be made to custom order (standard film thicknesses are 0.25mm, 0.35 mm and 0.55mm).

Sample price is 17 cents per cm? (processing cost separate).

- Henri Arnold
EE Times Europe




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