B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1165
B29C 67/04 (2006.01) B01D 39/16 (2006.01) B01D 46/24 (2006.01) B29C 67/20 (2006.01)
Patent
CA 2012625
A method of manufacturing a filter element comprises the steps of mechanically crushing two grades or more of a heat resistive synthetic resin material, the grades having different melt flow indices, respectively, the heat resistive synthetic resin material being selected from a group consisting of polysulfone, polyethersulfone and polyphenylenesulfide or containing said selected heat resistive synthetic resin as a main constituent, mixing them with one grade of them being 20 to 80 wt%, sintering the mixture in a metal mold at a melt temperature thereof plus or minus 20°C when the mixture is crystalline resin or at a temperature in a range from glass transition temperature thereof up to the glass transition temperature plus 40°C when th.e mixture is non-crystalline resin to form a shaped product having intercommunicating porosity, spraying surfaces of the shaped product with suspended mixture liquid of polytetrafluoroethylene particles, adhesive of thermosetting synthetic resin and water and solidifying the suspension liquid by heating. In order to improve the wetting of polytetrafluoroethylene with water, ethylalcohl may be added to the suspended mixture liquid.
Herding Gmbh
Nittetsu Mining Co. Ltd.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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