B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
B28B 7/06 (2006.01) B01D 39/08 (2006.01) B28B 7/46 (2006.01) D03D 1/00 (2006.01) D03D 15/00 (2006.01)
Patent
CA 2332059
A filter assembly for use in a press mould for moulding of cementitious products, the filter assembly including a fabric mounted in face to face contact with a support plate, perforated with a plurality of apertures arranged in a predetermined pattern to permit passage of fluid through the plate, the apertures defining imperforate zones therebetween, the fabric being knitted or woven to have a surface defined by a plurality of parallel ribs in face to face contact with the support plate, each pair of adjacent ribs defining therebetween opposed sides of a fluid channel which communicates with a number of said apertures and said imperforate zones, the ribs being knitted or woven to be sufficiently non-compressible in order to resist collapse of said fluid channels during compression of the cementitious product within said mould.
Butlin Terence
Green Barrie Edward
Bereskin & Parr
Eco Filters Limited
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