Abstract: A tire load estimation device includes: acceleration sensors; a total vehicle weight calculating device; an acceleration waveform extracting device; a differential acceleration waveform calculating device; a peak position detecting device detecting peak positions on leading and trailing edge sides in the differential acceleration waveform; a ground contact time ratio calculating device calculating ground contact and rotation times from the peak positions to calculate a ground contact time ratio; and a lord estimating device estimating the load acting on the tire from the ground contact time ratio of each tire, a maximum load capability of the tire, the total vehicle weight, and an inclination obtained in advance by approximating a maximum load capability ratio, which is a value obtained by normalizing the load with the maximum load capability, with a linear function of the ground contact time ratio.

Abstract: A liner for an unvulcanized rubber member is provided that has excellent durability while maintaining the tackiness of an unvulcanized rubber member. An unvulcanized rubber member liner 10 is a plain fabric made from weft threads 14 of a split yarn of 1000 to 1330 dtex fiber diameter threads formed from a smooth faced resin film. Fine linear threads of multi-filament thread are employed as warp threads 12. Due to employing smooth surfaced split yarn weft threads 14, the surface of an unvulcanized rubber member 16 that makes contact with the weft threads 14 is also made smooth. The multi-filament threads of the warp threads 12 suppress the contact surface area with the unvulcanized rubber member 16 to a minimum. Accordingly the surface of the unvulcanized rubber member is made smoother overall than when a liner formed from a conventional plain fabric is employed. This results in excellent release properties while excellent tackiness of the unvulcanized rubber member can be maintained.

Abstract: A liner for an unvulcanized rubber member is provided that has excellent durability while maintaining the tackiness of an unvulcanized rubber member. An unvulcanized rubber member liner 10 is a plain fabric made from weft threads 14 of a split yarn of 1000 to 1330 dtex fiber diameter threads formed from a smooth faced resin film. Fine linear threads of multi-filament thread are employed as warp threads 12. Due to employing smooth surfaced split yarn weft threads 14, the surface of an unvulcanized rubber member 16 that makes contact with the weft threads 14 is also made smooth. The multi-filament threads of the warp threads 12 suppress the contact surface area with the unvulcanized rubber member 16 to a minimum. Accordingly the surface of the unvulcanized rubber member is made smoother overall than when a liner formed from a conventional plain fabric is employed. This results in excellent release properties while excellent tackiness of the unvulcanized rubber member can be maintained.