Filter material formed by fibride particles

Details Filter material formed by fibride particles Filter material formed by fibride particles

1991-03-07

1992-08-25

Dawson, Robert A.

Liquid purification or separation

Filter

Material

210504, 210505, 210506, 210508, B01D 2400

Patent

active

051416433

ABSTRACT:
In a filter bed (11) for the solid/fluid separation of media which contain substances that attack or dissolve cellulose, for example cellulase-containing enzymes, a matrix comprising a fibrous material structure of polyolefin fibrid particles (12) which are matted and anchored in one another and which can additionally contain up to 20% by weight of narrower fibrid polyolefin fibres and/or polyolefin fibres that have a fibre length of up to 5 mm. and have just started to fibrillate, in order to strengthen the sheet formation of the matrix. The actual filter-active particles, in particular kieselguhr particles and/or perlite particles having grain sizes of 5 to 100 um., are embedded in the cellulose-free fiber matrix.

REFERENCES:
patent: 3888766 (1975-06-01), De Young
patent: 4460642 (1984-07-01), Errede et al.
patent: 4678571 (1987-07-01), Hosaka et al.
patent: 4859340 (1989-08-01), Hou et al.
Credali, Lino: Ferlosa synthetic fibrids, new possibilities for the paper industry. In: TAPPI, International Symposium on synthetic pulps and papers, 1980 pp. 5-16.

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