D - Textiles – Paper – 01 – D
Patent
D - Textiles, Paper
01
D
D01D 5/11 (2006.01) D04H 3/16 (2006.01)
Patent
CA 2208310
This invention relates to flash spinning a plexifilamentary film-fibril strand and laying it down into sheet material including the step of subjecting the strand to an electrostatic charge. The invention is particularly focused on cleaning, and maintaining clean, the target plate (60) of the electrostatic charging system by scrubbing or scouring the surface of the target plate with a highly abrasive brush (70) moving at a relatively high speed. The target plate (60) is selected to be abrasion resistant.
L'invention concerne un procédé "flash spinning" de filage d'un filament plexiforme fibrillé et de formation de feuilles avec ces filaments, qui consiste à exposer les filaments à une charge électrostatique. Afin de nettoyer ou de maintenir propre la plaque cible (60) du système de chargement électrostatique, on frotte ou on récure la surface de la plaque cible avec une brosse très abrasive (70) déplacée à une vitesse relativement élevée. La plaque cible (60) est résistante à l'abrasion.
Bednarz Thomas K.
de Cauwer Jacques Gilbert
Niederpruem Ottmar
Stachnik Michel
Woll Jean Francois
Bennett Jones Llp
E.i. Du Pont de Nemours And Company
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