Meltblown ionomer microfibers and non-woven webs made therefrom

Details Meltblown ionomer microfibers and non-woven webs made therefrom Meltblown ionomer microfibers and non-woven webs made therefrom

1997-07-25

1999-03-16

Kim, John

Liquid purification or separation

Filter

Material

55DIG45, 210505, 428359, 428364, 428373, 428903, B01D 3900

Patent

active

058825193

ABSTRACT:
Ethylene/carboxylic acid ionomers may be made, using a meltspun, and particularly meitblown process, into microfibers and thence to filter webs which are efficient gas filters for removing particles having a diameter of from 0.5 to 20 microns from a gas. The webs are effective without a deliberate specific post-charging operation during production. A deliberate post-charging operation can also be carried out to result in further efficiency.

REFERENCES:
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patent: 4588537 (1986-05-01), Klaase et al.
patent: 4592815 (1986-06-01), Nakao
patent: 4626263 (1986-12-01), Inoue et al.
patent: 4789504 (1988-12-01), Ohmori et al.
patent: 5411576 (1995-05-01), Jones et al.
patent: 5496507 (1996-03-01), Angadjivand et al.
patent: 5534335 (1996-07-01), Everhart et al.
patent: 5620785 (1997-04-01), Watt et al.
International Search Report For PCT/US 97/15641 dated Jan. 14, 1998.

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