| 摘要 |
PURPOSE: To obtain the subject sheet easily and inexpensively by producing a fiber-interlaced sheet high in quality by temporarily coloring a fiber sheet made of multi-component-based fiber of a plurality of macromolecular substances different in solubility and by colliding it with a high-speed flowing fluid, followed by desorbing part of the temporarily colored component. CONSTITUTION: The objective sheet is obtained by conducting a multi-component fiber spinning by using e.g. polyethylene terephthalate as an island component and e.g. polystyrene copolymerized with 2-ethylhexyl acrylate as a sea component; thus preparing the multi-component-based fiber comprising >=2 kinds of macromolecular substances different in solubility in solvent; needle-punching the web formed of the multi-component-based fiber for obtaining the fiber sheet; immersing it into a water solution containing the temporarily colored component for temporary coloring; colliding a high-speed flowing liquid of e.g. water jetted from a jet nozzle with the sheet for interlacing thereof together with decoloring the sheet by removing at least part of the temporarily colored component via water flow. |
