【発明の名称】エレクトレット濾過材の荷電方法 - Minnesota Mining and Manufacturing Company

Title:

【発明の名称】エレクトレット濾過材の荷電方法

Document Type and Number:

Japanese Patent JP3476084

Kind Code:

B2

Abstract:

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.

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Inventors:

Angadoji Band, Said Ay
Jones, Marvin Yee
Mayer, Daniel Yee

Application Number:

JP50715795A

Publication Date:

December 10, 2003

Filing Date:

August 17, 1994

Export Citation:

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Assignee:

Minnesota Mining and Manufacturing Company

International Classes:

A62B7/00; A62B7/10; A62B18/00; A62B18/02; B01D39/14; B01D39/00; B01D39/08; B01D39/16; B03C3/28; D04H1/40; D04H1/42; D04H1/46; D04H1/56; D04H11/00; D04H13/00; D06M10/00; D06M10/02; D06M11/05; H01G7/02; A62B23/02; (IPC1-7): B01D39/14; B01D39/16; D04H1/42; D04H1/46; D06M10/02

Domestic Patent References:

JP1224020A
JP62290477A
JP55138223A

Attorney, Agent or Firm:

Aoyama Ryo (2 outside people)

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