PROCESS AND APPARATUS FOR PRODUCING ELECTROSTATICALLY CHARGED FIBRES AND AN ELECTRET PRODUCT
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United States of America Patent
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Issued Date -
Sep 7, 2023
app pub date -
Mar 2, 2023
filing date -
Mar 4, 2022
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Abstract
Techniques produce electrostatically charged fibres, and in particular produce an electret fibre construct, where fibres are produced from a plastics and/or natural-origin material, where a polar liquid is atomized using a gaseous pressure medium to produce a treatment aerosol and where the fibres are treated with the treatment aerosol for electrostatic charging, wherein the atomizing is undertaken with a quotient of the volume flow of the polar liquid in litres per second and the positive pressure of the gaseous pressure medium in hectopascals of 0.004 to 0.008.
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