| 摘要 |
<p>The invention provides a primary carpet backing having a thickness of less than 2 mm. measured at a pressure of 240 g./cm.2 comprising a 2 to 6 oz./yd.2 woven or bonded nonwoven sheet of continuous filaments or ribbons of polypropylene having needled thereto a 1 to 6 oz./yd.2 layer of a blend of staple fiber containing from about 0.5 to 30% by weight of synthetic organic polymeric fiber containing conductive carbon and having a specific resistance of less than 1 x 104 ohm. cm.</p> |
