Method and apparatus for particulate removal from moving paper webs

US9108229B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Brad Scott Lockhart · Cincinnati, US
• André Mellin · Amberley Village, US
• John Ferney McKibben · Sharonville, US
• David Matthew Ogden · Cincinnati, US
• Brian Christopher Schwamberger · Hamilton, US
• Peter Wiedmann · Montgomery, US
• Richard Matthew Giachetto · Loveland, US

Key dates

• Filing date: Jun 17, 2011
• Grant date: Aug 18, 2015
• Expiry date: Sep 2, 2033

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B08B5/046
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for removing dust-carrying air from a moving paper web is disclosed. The method includes the steps of: providing a moving web, the web having a first side and a second side, the web moving at a sufficient rate to produce a boundary layer of adjacent dust-carrying air; providing a NACA duct, the NACA duct having an intake opening and walls that diverge in increasing cross-sectional area to an exhaust opening having greater cross sectional area than the intake opening; and submerging the intake opening into the boundary layer to scavenge dust-carrying air from the boundary layer.