| 摘要 |
PURPOSE:To obtain the subject sheet having excellent initial modulus, recovery after high-nipping pressure, dehydrating properties and permanence by laminating specific nonwoven fabric of continuous fiber and bulky short fiber layer, treating of needle-punching and attaching NBR binder. CONSTITUTION:(A) Continuous fiber such as polypropylene is bound by needle- punching, etc., to obtain nonwoven fabric 1 having 1.0-1.5kg/cm 3% modulus. Said nonwoven fabric is laminated with (B) bulky short fiber layer 2 formed with short fiber of natural fiber such as cotton or wool or synthetic fiber such as polyamide or acrylics, then needle-punching treatment of 30-100P/cm<2> is performed and interlaced as one body to obtain a composite fiber mat. Next, (C) 100-200pts.wt. (based on fiber weight of said mat) NBR binder 3 is attached to said mat to afford the aimed sheet. |
