| 摘要 |
A roll capable of operating at high speeds and high nip pressures having an outer shell of a composite material formed by bonding a needled nonwoven mat of either acrylic fibers, polyester fibers or mixtures of these fibers with an epoxy resin so that ten to forty percent by weight of the composite is fiber. The covering above described may be manufactured by winding a continuous strip of the mat, said mat having been saturated with the resin onto a roll at a uniform speed and with a lead sufficient to build a plurality of layers in one pass while simultaneously unwinding the strip from a strip holding means under brake tension to permit winding so as to decrease the width of the strip by at least three percent. |
