Method of making a fibrous electret web using a nonaqueous...

Details Method of making a fibrous electret web using a nonaqueous... Method of making a fibrous electret web using a nonaqueous...

D - Textiles, Paper

06

M

D06M 23/10 (2006.01) A41D 13/00 (2006.01) A41D 13/11 (2006.01) B01D 39/16 (2006.01) B03C 3/28 (2006.01) D06M 13/127 (2006.01) D06M 13/144 (2006.01) D06M 13/148 (2006.01) D06M 13/188 (2006.01) D06M 13/248 (2006.01) D06M 13/345 (2006.01) D06M 13/402 (2006.01) H01G 7/02 (2006.01)

Patent

CA 2388236

A method of charging fibrous webs with nonaqueous polar liquids. A web (20) that contains nonconductive fibers is wetted with a nonaqueous polar liquid (14). The web (20) is then substantially dried (22) to provide a fibrous electret web. The fibrous electret web can be used as a filter in a filtration face mask (40) that is adapted to cover the nose and mouth of the wearer. The present method has the advantage over known charging methods in that the nonaqueous liquid requires less energy for drying than is required for aqueous liquids. Additionally, many filter webs can be directly wetted with nonaqueous liquids, which cannot be easily wetted with aqueous liquids.

L'invention concerne un procédé permettant de charger des voiles fibreux à l'aide de liquides polaires non aqueux. Un voile (20) contenant des fibres non conductrices est mouillé à l'aide d'un liquide polaire (14) non aqueux. Ce voile (20) est ensuite sensiblement séché (22) de façon à obtenir un voile fibreux d'électret. Ledit voile fibreux d'électret peut être utilisé comme filtre dans un masque facial (40) de filtrage conçu pour recouvrir le nez et la bouche d'un utilisateur. Ce procédé présente l'avantage, par rapport aux procédés de charge connus, que le liquide non aqueux requiert moins d'énergie que les liquides aqueux pour le séchage. En outre, il est possible de mouiller plusieurs voiles fibreux à l'aide des liquides non aqueux, ce qui n'est pas le cas avec les liquides aqueux.

Affiliated with

Also associated with

Rating

Method of making a fibrous electret web using a nonaqueous... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making a fibrous electret web using a nonaqueous..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making a fibrous electret web using a nonaqueous... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2051871