| 摘要 |
PURPOSE:To obtain a laminated sheet, having excellent filtration efficiency and useful as extraction or filtration sheets by integrally binding an interlayer of a nonwoven fabric consisting of heat-fusible fibers between both the front and the back layers consisting of sheetlike oriented substances of filament yarns. CONSTITUTION:The objective laminated sheet, obtained by arranging an interlayer (3a) consisting of heat-fusible fibers (3a) between the front layer 1 and the back layer 2 laminated so as to make filament yarns (1a) and (2a) mutually parallel and integrally binding the three layers at respective fusing parts 4 to provide filtration mesh voids 5 and producible at a high speed and low cost. |
