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To: SG who wrote (11052)	1/28/2000 7:04:00 AM
From: SG	Respond to of 11098

Got pure polymers???? ST. PAUL, MINN. - February 23, 1999 - 3M understands that small vibrations in disc drive operations can lead to reduced drive performance and eventually to breakdowns. It also knows that people traveling in aircraft and automobiles demand a smooth, quiet and comfortable ride. No matter what the product, chances are that the less vibration and noise, the better. That?s why 3M continues to extend its line of viscoelastic damping polymers with four products in a variety of thicknesses. The new products from 3M attack vibration problems directly at the resonating source. 3M viscoelastic damping polymers can be used alone, as part of a laminate construction, or may incorporate a thin stainless steel, aluminum or polyester constraining layer. The constraining layer remains rigid while the polymer absorbs the vibrations. 3M viscoelastic damping polymers are acrylic polymers offering good thermal stability and damping performance for long term applications at moderate temperatures and also applications that experience short high temperature excursions. Specifically, 3M Ultra-pure Viscoelastic Damping Polymer 242 is designed to be used in applications that require low outgassing and ionic levels, while still providing robust damping performance. Lower outgassing is important for many electronic applications. 3M Ultra-pure Viscoelastic Damping Polymer 242 has a typical temperature range for good damping of 0-65 degrees C. It is applied by using modest pressure at room temperature (21C). It comes in three thicknesses, 1 mil, 2 mil and 4 mil and features a 2 mil. polyester film liner and plastic core. 3M Viscoelastic Damping Polymer 110 is applied using heat and pressure and has a typical temperature range for good damping of 40?105 degrees C. It comes in two thicknesses, 2 mil and 5 mil. It features a 4 mil thick, 58# polycoated kraft paper liner. 3M Viscoelastic Damping Polymer 112 needs only rolling or squeegeeing methods of pressure to provide adequate bonding at room temperature. It has a typical temperature range for good damping of 0-65 degrees C. It comes in three thicknesses, 1 mil, 2 mil and 5 mil. It features a 4 mil thick, 58# polycoated kraft paper liner. 3M Viscoelastic Damping Polymer 130 is somewhat tacky at room temperature. Pressure alone can be used for laminating it to many substrates, however, some applications may require heat and pressure. It has a typical temperature range for good damping of 20-90 degrees C. It comes in two thicknesses, 2 mil and 5 mil and features a 4 mil thick, polyester film paper liner. 3M viscoelastic damping polymers technology is ideal for use in the automotive, aerospace and electronics industries, as well as other general industries. Applications may include disk drive suspension dampers, cover dampers, flex circuit dampers, damped laminate covers, suspension dampers, isolators and panel dampers, among others.