| 摘要 |
PURPOSE:To obtain a nonwoven fabric having excellent strength and water resistance, decomposable and extinguishable in soil, by subjecting web comprising cellulosic natural fiber, etc., to water punching using an aqueous solution of chitosan salt as a jet fluid, adjusting to proper build-up and drying. CONSTITUTION:Web is made from a cellulosic natural fiber, a regenerated fiber, a cellulosic semisynthetic fiber or a mixed fiber thereof by a web forming machine, subjected to water punching by a water needling machine using an aqueous solution of chitosan salt (e.g. solution prepared by dissolving 0.2-1.0% chitosan in 0.2-1.0 aqueous solution of acetic acid, etc.) as a jet fluid, adjusted to 0.5-5 pts.wt. (solid content) build-up based on 100 pts.wt. fiber (solid content) by a vacuum dehydrator, mangle, etc., and dried to give a nonwoven fabric suitable as a disposable nonwoven fabric, etc. |
