Filtration mediam support material and filter comprising same

Details Filtration mediam support material and filter comprising same Filtration mediam support material and filter comprising same

1995-05-30

1997-03-25

Walker, W. L.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

210505, 210508, 55486, 55528, 264180, 425 71, B01D 3916

Patent

active

056140959

ABSTRACT:
The present invention provides a method of preparing a support for a filtration medium comprising passing a sheet of nonwoven fibrous polymeric material having first and second sides through a calender which comprises a nondeformable roll and a resilient roll, the nondeformable roll being maintained at a temperature below the melting temperature of the material, so as to increase the smoothness of the first side of the material which contacted the resilient roll. A filtration medium support material prepared in accordance with the method of the present invention, as well as a filter comprising a filtration medium and that filtration medium support material, are also provided by the present invention.

REFERENCES:
patent: 3591010 (1971-07-01), Pall et al.
patent: 3592767 (1971-07-01), Pall
patent: 3716436 (1973-02-01), Pall et al.
patent: 3867294 (1975-02-01), Pall et al.
patent: 4033881 (1977-07-01), Pall
patent: 4184966 (1980-01-01), Pall
patent: 4225642 (1980-09-01), Hirakawa
patent: 4340479 (1982-07-01), Pall
patent: 4481876 (1984-11-01), Amendola
patent: 4609465 (1986-09-01), Miller
patent: 4650506 (1987-03-01), Barris et al.
patent: 4693985 (1987-09-01), Degen et al.
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patent: 5006235 (1991-04-01), Cooper
patent: 5137678 (1992-08-01), Hess et al.
patent: 5149481 (1992-09-01), Gross et al.
patent: 5204037 (1993-04-01), Fujii
patent: 5207962 (1993-05-01), Hovis et al.
patent: 5211899 (1993-05-01), Fujiii
patent: 5252207 (1993-10-01), Miller et al.
patent: 5286436 (1994-02-01), Funk et al.
"Beloit Wheeler" Brochure (Beloit Corporation Form No. BMI 062 1113M Rev).
"Beloit Manhatten Supertex.RTM. Roll Covers" Brochure (Beloit Corporation Form No. BMD1027 VG 10/90 3M).
"Beloit Wheeler Model 700" Information Sheet (Beloit Corporation).
Derwent Database AN 87-317511 corresponding to Japanese Patent 62 225 218, Oct. 3, 1987 (abstract).

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