IMPROVED FLOWING ARCH EXPANSION JOINT USING FEP LINER BONDED TO FIBERGLASS FABRIC LAYER AND REINFORCED WITH PLURALITY OF FABRIC PLIES COVERED WITH ELASTOMERIC OUTER LAYER

摘要

ABSTRACTAn improved flowing arch expansion jointincludes a fiberglass body layer having an10 overlapping longitudinal seam that are bondedtogether by a layer of heat flowable fluoropolymermaterial. The radial expansion strength of thejoint is enhanced by a supplemental peripheralreinforcing strip extending over less than the15 entire axial length of the joint, in the area ofthe maximum diameter portion, only. The peripheralreinforcing strip is formed by a winding process inwhich tire cord-based strip material is wound at alaying angle as close as possible to ninety degrees20 relative to the axis of the joint.