The present invention relates to an airbag fabric comprising a polyester fiber, and more particularly to a polyester fabric, a preparation method for the same, and an airbag for vehicle comprising the same, where the polyester fabric has a tensile strength T 1 of at least 95 kgf/inch as measured according to the ASTM D 5034 method, a tear strength T 2 of at least 6.5 kgf as measured according to the ASTM D 2261 TONGUE method, and the ratio (T 1 /T 2 ) of tensile strength T 1 to tear strength T 2 in the range of 4.0 to 16.4.
The airbag fabric of the present invention uses a low-modulus polyester fiber having high strength and high elongation to impart good mechanical properties, such as high toughness and high tear strength, and excellences in packing property, dimensional stability, and air sealing performance, thereby minimizing collision impacts on occupants and protecting occupants with safety.