Nonwoven fabric in an electret state and process for its product

Details Nonwoven fabric in an electret state and process for its product Nonwoven fabric in an electret state and process for its product

1993-10-18

1995-04-25

Bell, James J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including interlaminar mechanical fastener

55DIG39, 156167, 204165, 204168, 204169, 264 22, 522155, 428903, 96 99, D03D 300

Patent

active

054097665

ABSTRACT:
The improved nonwoven fabric in an electret state is composed of monofilaments with an average fiber diameter of 0.5-100 .mu.m that are formed of a polymer composition containing no more than 1 mol % of polar groups; the fabric has a weight of 5-100 g/m.sup.2, a bulk density of 0.05-0.40 g/cm.sup.3 and an average surface charge density of at least 0.1.times.10.sup.-9 C/cm.sup.2. This nonwoven fabric is capable of efficient dust collection and its trapping ability is retained for a prolonged time even in a hot and humid condition. Also disclosed are a process for producing this nonwoven fabric, as well as a filtering and an air masking material which are composed of that nonwoven fabric.

REFERENCES:
patent: 4592815 (1986-06-01), Nakao
patent: 4626263 (1986-12-01), Inoue et al.
patent: 4917942 (1990-04-01), Winters
patent: 5206061 (1993-04-01), Ando et al.

Affiliated with

Also associated with

Rating

Nonwoven fabric in an electret state and process for its product does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Nonwoven fabric in an electret state and process for its product, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonwoven fabric in an electret state and process for its product will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1566690