Patent ID: 6436215
Filing Date: 2002-08-20
Classification: B29C,B29D,B60C,D02G,Y10T

Abstract:
A method of forming a thin annular band for embedding in a crown portion of a pneumatic tire including the steps of:A) providing a thin flat strip of material formed with a plurality of longitudinally extending fibers embedded in a resin matrix; B) twisting the strip until the strip assumes a substantially circular cross section throughout its length; C) pultruting the twisted strip through a die to provide the strip with a substantially rectangular cross section; D) wrapping the pultruted strip about a mandrel to form the band having a plurality of adjacent convolutions of said pultruted twisted strip; and E) forming inner and outer layers about the band by wrapping a first homogenous filament about the mandrel before wrapping the pultruted twisted strip thereon then wrapping a second homogenous filament over the band formed from the pultruted twisted strip layer.