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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:

The amount, expressed as a percentage by mass, or linear polymer that is generally present in a crystalline form, the remainder of the polymer being present in an amorphous state. NOTE: There are...
(Dbl. lock/class 400 - A stitch formed with two or more groups of threads that interlace each other. The loops of needle thread are passed through the material where they are secured by looper...
A Yarn Formed From An Elastomer., Note 1: Elastomeric Yarn May Either Be Incorporated Into Fabric In The Bare State Or Wrapped With Relatively Inextensible Fibres. Wrapping Is Done By Covering (see...
Color changes in localized areas of a garment due to differential wear, such as the knees of blue jeans. Often evident in cross-dye shades of blends where durable press treatments are applied. Color...
Jockstraps, also known as athletic supporters, are men's undergarments for use in sports and other activities. The typical jockstrap consists of an elastic waistband with a support pouch for the...

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