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Static Basics
How is Static Generated? These processes include:
Static electricity is a surface phenomenon and results • Peeling laminate
when two or more surfaces are in intimate contact with • Unwinding a roll
each other and then are separated. During contact, surface
electrons, which are negative, migrate from one surface • Separating surfaces
to the adjacent surface. When the surfaces separate, • Wind-up operations
the surface that gains the electrons becomes negatively • Collecting products in bins
charged, the surface giving them up becomes positively
charged. Production jams, quality problems, dirt attraction and
rejects are all consequences of uncontrolled static.
Many industrial materials are insulators, such as rubber,
glass and plastics. Their desirable qualities make them
essential to use; however, they are likely to become
electrostatically charged during processing.
Friction, pressure and separation are the major causes of static electricity.
The Triboelectric Series chart shows the relative positive or negative charge of various materials.
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