The method includes the steps of: providing {TAIL ~ fibers} of a desired length; treating the fibers with a treating liquid made up of a nitrile rubber modified epoxy resin and an alkylphenol•formaldehyde resin; and dispersing the treated fibers in {HEAD ~ rubber} 
The method includes the steps of : providing { TAIL ~ fibers } of a desired length ; treating the fibers with a treating liquid made up of a nitrile rubber modified epoxy resin and an alkylphenol•formaldehyde resin ; and dispersing the treated fibers in { HEAD ~ rubber }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD