ELECTRET FILTER MEDIA

A method of charging a nonwoven web of thermoplastic microfibers to provide electret filter media is provided. The method includes impinging on a nonwoven web of thermoplastic nonconductive microfibers capable of having a high quantity of trapped charge jets of water or a stream of water droplets at...

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Bibliographic Details
Main Authors ANGADJIVAND, SEYED A, JONES, MARVIN E, MEYER, DANIEL E
Format Patent
LanguageEnglish
French
Published 10.04.2007
Subjects
BRAIDING
COTTON-WOOL
DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS
FIRE-FIGHTING
HUMAN NECESSITIES
KNITTING
LACE-MAKING
LIFE-SAVING
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL
NON-WOVEN FABRICS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TEXTILES
TRANSPORTING
TRIMMINGS
WADDING
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Summary:A method of charging a nonwoven web of thermoplastic microfibers to provide electret filter media is provided. The method includes impinging on a nonwoven web of thermoplastic nonconductive microfibers capable of having a high quantity of trapped charge jets of water or a stream of water droplets at a pressure sufficient to provide the web with filtration enhancing electret charge and drying said web.
Bibliography:Application Number: CA19942474282