| 摘要 |
A molded filter element is fabricated by the method comprising the steps of: preparing a plastic composition of a powder-grain adsorbent of 100 weight parts, an emulsion type synthetic resin binder of 5 - 20 weight parts having a film-making capability at room temperature , an aqueous high-polymer binder of 0.5 - 5 weight part, and water of the amount sufficient to change the compound of these agents into a composition having its own shape holding property; pressure-filling said plastic composition in a mold composed of plural members to provide a molded filter element; evaporating water until the molded filter element has a shape-holding strength in a state where at least one member of said mold is removed; and heat-treating the molded filter element at a temperature of 110 - 160 DEG C. Thus, the molded filter element permits filtering and adsorption/removal of impurities to be performed simultaneously, and can have a large breaking strength, uniform openings, a small flow resistance and a large adsorption capacity. |
