Spunbond vacuum cleaner webs

Details Spunbond vacuum cleaner webs Spunbond vacuum cleaner webs

1996-04-19

1997-09-16

Chiesa, Richard L.

Gas separation: apparatus

Electric field separation apparatus

15347, 55382, 55486, 55528, 55DIG2, 55DIG5, 55DIG39, 96 68, 96 69, 264484, 264DIG48, 442362, 442401, B03C 3155

Patent

active

056675623

ABSTRACT:
There is provided a vacuum cleaner filter medium which is a nonwoven spunbond web of conjugate spunbond fibers. The web has a Frazier permeability of at least 250 CFM, an NaCI efficiency of at least 65 percent, a Gurley Stiffness of at least 20 mg, and a pressure drop of 0.5 or less mm H.sub.2 O. The conjugate fibers are made from polymers, more particularly polyolefins, still more particularly polypropylene and polyethylene in a side-by-side configuration. The filter medium is treated by a hot-air knife and through-air bonded during the production process. The medium is also electret treated. The medium has sufficient stiffness to be converted into a filter by conventional techniques. While this invention is directed mainly to air purification and filtration, other gasses may be filtered as well.

REFERENCES:
patent: 3338992 (1967-08-01), Kinney
patent: 3341394 (1967-09-01), Kinney
patent: 3423266 (1969-01-01), Davies et al.
patent: 3502763 (1970-03-01), Hartmann
patent: 3542615 (1970-11-01), Dobo et al.
patent: 3692618 (1972-09-01), Dorschner et al.
patent: 3783588 (1974-01-01), Hudis
patent: 3802817 (1974-04-01), Matsuki et al.
patent: 3849241 (1974-11-01), Butin et al.
patent: 4020230 (1977-04-01), Mahoney et al.
patent: 4041203 (1977-08-01), Brock et al.
patent: 4215682 (1980-08-01), Kubik et al.
patent: 4340563 (1982-07-01), Appel et al.
patent: 4374888 (1983-02-01), Bornslaeger
patent: 4375718 (1983-03-01), Wadsworth et al.
patent: 4557957 (1985-12-01), Manniso
patent: 4589894 (1986-05-01), Gin et al.
patent: 4592815 (1986-06-01), Nakao
patent: 4720400 (1988-01-01), Manniso
patent: 4753730 (1988-06-01), Maurer
patent: 4874399 (1989-10-01), Reed et al.
patent: 4874659 (1989-10-01), Ando et al.
patent: 4900449 (1990-02-01), Kraus et al.
patent: 4902423 (1990-02-01), Bacino
patent: 4917942 (1990-04-01), Winters
patent: 5076935 (1991-12-01), Kraus et al.
patent: 5080702 (1992-01-01), Bosses
patent: 5090975 (1992-02-01), Requejo et al.
patent: 5108820 (1992-04-01), Kaneko et al.
patent: 5112677 (1992-05-01), Tani et al.
patent: 5145727 (1992-09-01), Potts et al.
patent: 5169706 (1992-12-01), Collier, IV et al.
patent: 5178931 (1993-01-01), Perkins et al.
patent: 5188885 (1993-02-01), Timmons et al.
patent: 5283106 (1994-02-01), Seiler et al.
patent: 5304227 (1994-04-01), Matsuura et sl.
patent: 5336552 (1994-08-01), Strack et al.
patent: 5350443 (1994-09-01), von Blucher et al.
patent: 5382400 (1995-01-01), Picke et al.
patent: 5401446 (1995-03-01), Tsai et al.
patent: 5411576 (1995-05-01), Jones et al.
patent: 5443606 (1995-08-01), Hassenboehler, Jr. et al.
patent: 5468447 (1995-11-01), Bermas
patent: 5476589 (1995-12-01), Bacino
patent: 5547551 (1996-08-01), Bahar et al.
patent: 5593479 (1997-01-01), Frey et al.
patent: 5599366 (1997-02-01), Hassenboehler et al.
Standard Test Method for flow Rates Of Thermoplastics By Extrusion Plastometer.sup.1, Dec. 1990, pp. 272-275.

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