Base fabric, jet loom, and method of manufacturing base fabric

A base fabric comprising:

• a fabric part, and selvages having a predetermined width formed at both ends in a length direction of the fabric part, respectively, and having
• a coefficient of variation CV1′ (100×standard deviation/average value) of 3.0% or less in a length direction of a weft-direction disintegrated yarn strength in a width direction including the selvages, and
• a coefficient of variation CV2′ (100×standard deviation average value) of 4.0 or less in a length direction of a weft-direction disintegrated yarn elongation in a width direction including the selvages wherein the coefficient of variation is calculated by a continuous 20-point measurement of the disintegrated yarn strength from a center in a width direction to a length direction of the base fabric and then from the measured average value and the standard deviation.

A base fabric consisting of

• a synthetic fiber, and including
• a fabric part, and selvages having a predetermined width formed at both ends in the length direction of the fabric part, respectively,
• wherein the selvage has a fringe protruded from a weft yarn and has a length direction coefficient of variation CV3 (100×standard deviation/average value) of 8.0% or less of the fringe in a length direction of the base fabric wherein the coefficient of variation is calculated by a continuous 20-point measurement of the disintegrated yarn strength from a center in a width direction to a length direction of the base fabric and then from the measured average value and the standard deviation.