Biaxially stretched bottle having a carrying handle

A biaxially stretched bottle formed of a thermoplastic resin in which, during injection molding of the preform, a carrying handle is formed integrally with side surfaces of a neck portion, the neck portion having an upper portion on which screw threads are disposed and a lower portion extending between the upper portion and a shoulder portion of the bottle, and the carrying handle is formed as a carrying handle for a thin bottle by biaxially stretch blow molding without further modification, wherein

• the carrying handle is formed in a U-shaped configuration having a grip portion and arm portions on both sides integrally formed, and has the both arm portions formed integrally with flat, horizontal base portions projecting from symmetrical positions on both sides of the lower portion of the neck portion, which arm portions extend out to the sides with a length greater than the height of the neck portion, and which has boundaries of the base portions and arm portions constricted so as to be molded thinly thereby forming connecting portions which bend freely in a vertical direction, and has the base portions supported by vertical brackets disposed below the respective base portions and integrally molded with bottom surfaces of the base portions and side surfaces of the lower portion of the neck portion, respectively.