Most plastics have an electrical surface resistance of >1015 ohms and are therefore electrostatically chargeable. The consequences are: dust attraction and sparking. Antistatic additives can reduce surface resistivity to <1011 to 1010 ohms. A higher proportion of antistatic agents can lower the surface resistance to 108 ohms.
A surface resistance of 105 ohms is achieved through the use of special compounds with a high proportion of carbon black. These foils are always black.
Further information on the subject of antistatic agents can be found here.
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