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What is "Electret" - Definition & Explanation

A non-conductive polymeric material which can maintain a long-lived electrostatic charge. Polypropylene electret filtration fabrics conveniently combine the mechanical removal of particles with an electrostatic field, which materially increases the filtration efficiency.

Some other terms

Some more terms:

A general term for a fabric woven on a special dobby loom, which allows the weaving of small, geometric figures. These patterns are beyond the range of simple looms, yet too limited to be produced...
A bobbin that has a cylindrical barrel and a conical or flanged base, and from which yarn can be withdrawn over the nose, i.e. the top of the barrel. NOTE: The shape of the fully wound bobbin is...
Literally a color description given to yellow-brown, earth/dust tones or greenish tinged shades, the term khaki has also evolved to define a strong cloth made of cotton, worsted or linen yarns and...
Made from cotton, linen, rayon in a plain or twill weave. Quality and price vary a great deal. The warp counts are finer than the filling counts which are spun rather loose. Strong substantial and...
Ultra Light Down is used in women's and men's jackets. the concept is to make the lightest and warmest insulation layer available. U.L. Down jackets weigh less than a tee-shirt, blocks more wind, is...

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