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MATERIALS: Permanent ESD Sheet for Electronics

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Polymeric conductive additive stays put.

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PermaStat compounds from RTP Co., Winona, Minn., are now available in sheet form. These compounds are based on a proprietary polymeric additive that provides permanent static-dissipative performance independent of ambient humidity. Now, RTP’s Engineered Sheet Products (ESP) division is offering thermoplastic sheet with permanent antistatic properties for applications such as electronics packaging.

PermaStat sheet features consistent surface resistivity of 109 to 1010 ohm/sq, said to be suitable for superior ESD (electrostatic dissipative) protection and dust control. For even higher conductivity and lower surface resistance—107 to 108 ohm/sq—ESP offers PermaStat Plus sheet.

Because they are made from all-thermoplastic compounds, the antistatic properties are inherent throughout the sheet, which maintains ESD protection with scratches, wear, machining, or forming. Fully colorable, they are available in a variety of resins, including PP, PC, acrylic, PETG, and ABS.

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