PURPOSE: To prevent the pattern deformation, broken design and occurrence of curvature of a glass fiber woven fabric, etc., by narrowing the warping width in a specified ratio to the reed width using a warper, rewinding the warp around a warp-winding beam and weaving by using a weaving machine.

CONSTITUTION: Low elastic fiber yarns such as glass fiber yarns are rewound around a warping-winding beam using a warper in a state where the warping width is narrowed about 5% in comparison with the reed width in a weaving machine. The center of the warping width is coincided with that of the reed width and weaving is then carried out.