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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 kind of jacket. Defined by the dictionaries as simply 'a kind of garment', the faiji was possibly a long over-garment without sleeves, or with very short sleeves, open in front and worn like a coat...
lightweight fabric, made of cotton or manufactured fiber, having crinkled stripes made by weaving some of the warp threads slack and others tight. Woven seersucker is more expensive than imitations...
A term used in identifying the structure of a yarn, fabric, or other textile material. For example, details such as denier (decitex), filament count, twist level and direction, and number of plies...
Comes from the Anglo-Saxon 'owef'. It is another name for the warp or warp yarn. Sometimes in advertising textiles, the word has been used to imply filling yarn, and made to interchange with the...
Indentation Load Deflection (ILD) refers to the firmness of a piece of foam. The lab puts a 4" x 15" x 15" piece of foam on a flat surface. Then a round metal plate, 8" in diameter, pushes down on...

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