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