Band element for pneumatic tire and method of making same

Details Band element for pneumatic tire and method of making same Band element for pneumatic tire and method of making same

B - Operations, Transporting

60

C

B60C 9/18 (2006.01) B29C 53/14 (2006.01) B29C 53/78 (2006.01) B29C 53/80 (2006.01) B29C 70/50 (2006.01) B29C 70/52 (2006.01) B29D 30/44 (2006.01) B60C 9/22 (2006.01) B60C 17/00 (2006.01) B60C 19/12 (2006.01) D02G 3/06 (2006.01) D02G 3/26 (2006.01)

Patent

CA 2278268

A band element for mounting in the crown portion of a pneumatic tire to provide run flat ability to the tire in the event of loss of air pressure and to provide increased puncture resistance. The band is formed of flat strips of tape having fibers embedded in a resin matrix which are twisted and then pultrated to provide a rectangular cross sectional configuration. The twisted tape is wrapped about a mandrel and forms either the only layer, or the intermediate layer of a composite band in combination with inner and outer layers of flat tape or wound filament fibers, whereby the fibers in the tape extend across the central axis of the band to reduce interlaminar sheer. In another embodiment, a plurality of dimples or depressions are formed in the individual tape layers to extend a plurality of the fibers across the layer boundaries to reduce interlaminar sheer.

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