Method of making a respirator that has a fluorinated electret

Details Method of making a respirator that has a fluorinated electret Method of making a respirator that has a fluorinated electret

2005-10-11

2005-10-11

Chiesa, Richard L. (Department: 1724)

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Producing or treating porous product

C055S528000, C055SDIG005, C055SDIG003, C095S059000, C128S205290, C128S206190, C264S455000, C264S466000, C264S469000, C264S483000, C264SDIG008, C264SDIG004

Reexamination Certificate

active

06953544

ABSTRACT:
A method of making a respirator, which method includes placing an electret in a respirator body that is adapted to fit over the nose and mouth of a wearer. The electret is disposed in the respirator body such that air passes through it before being inhaled by a respirator wearer. The electret includes a nonwoven web that has fluorinated polymeric microfibers and that has at least about 25% atomic fluorine as detected by ESCA and a CF3:CF2ratio of at least about 0.45.

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