Electrically charged, consolidated non-woven webs

Details Electrically charged, consolidated non-woven webs Electrically charged, consolidated non-woven webs

1992-09-28

1996-01-23

Raimund, Christopher W.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428288, 428296, 4283111, 4283115, 4283166, 4283155, 428903, 210505, 55528, B32B 2700

Patent

active

054864119

ABSTRACT:
A consolidated non-woven web made by post-treating a precursor nonwoven web including consolidating the web laterally by drawing, thereby reducing the maximum pore size measure of the web and improving the filtration efficiency of the web, and subjecting the consolidated web to an electrostatic field to further enhance filtration efficiency.

REFERENCES:
patent: 2740184 (1956-04-01), Thomas
patent: 4048364 (1977-09-01), Harding et al.
patent: 4088731 (1978-05-01), Groome
patent: 4215682 (1980-08-01), Kubik et al.
patent: 4375718 (1983-03-01), Wadsworth et al.
patent: 4588537 (1986-04-01), Klaase et al.
patent: 4592815 (1986-06-01), Nakaro
patent: 4904174 (1990-02-01), Moosmayer et al.
patent: 5122048 (1992-06-01), Deeds
patent: 5227172 (1993-07-01), Deeds
patent: 5244482 (1993-09-01), Hassenboehler, Jr. et al.

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