A reinforced liner for cured in place pipe rehabilitation of an existing pipeline
having a plurality of high-strength low-elongation fiber bundles disposed circumferentially
around the tubular liner at both inner and outer surfaces of a resin absorbent
layer of the liner is provided. The bundles of reinforcing fibers are continuous
lengths of high modulus fibers laid circumferentially with the ability to stretch
to accommodate variations in host pipe diameter. The ends of reinforcing fibers
on the inner and outer reinforcing layers overlap so that the ends slide past each
other as the liner is expanded prior to cure. The reinforcing fibers may be secured
to a porous scrim to form an inner tubular reinforcing layer. An outer layer of
bundles of reinforcing fiber are formed into a tube about the absorbent layer.
An outer impermeable tubular layer is wrapped around the inner layers. The reinforcing
layer may include longitudinal reinforcing fiber in either or both reinforcing
layers to increase the longitudinal strength of the liner.