Abstract 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.
A roll adapted to operate at high speed and high nip pressures having an outer shell comprising: a composite material formed from plural layers of a needled nonwoven mat selected from the group consisting of acrylic fibers, polyester fibers and mixtures thereof, said layers being bonded with a thermosetting resin of the epoxy type, said composite having from 10 percent to 40 perceNt by weight of said fibers and from 90 percent to 60 percent by weight of said resin.
Claim 2
Dependent Claim
32 words
The roll of claim 2 wherein said composite contains from 15 percent to 30 percent by weight of said fibers and from 85 percent to 70 percent by weight of said resin.
Claim 3
Dependent Claim
32 words
The roll of claim 2 wherein said composite contains from 20 percent to 25 percent by weight of said fibers and from 80 percent to 75 percent by weight of said resin.