| 摘要 |
A bottle-shaped synthetic resin container ( 1 ) includes a body portion ( 3 ), and a circumferential groove ( 10 ) extending along an outer surface of the body portion ( 3 ). The circumferential groove ( 10 ) is defined by a groove bottom wall ( 11 ) and groove side walls ( 12 a , 12 b) extending from the groove bottom ( 11 ) to the outer surface of the body portion ( 3 ). At least one of the groove side walls ( 12 a , 12 b) extends substantially linearly, as seen in a longitudinal-sectional plane including a center axis (A) of the body portion ( 3 ), and forms an angle (alpha, beta) of not more than 20° relative to a reference line (L) perpendicular to the center axis (A) of the body portion ( 3 ) in the longitudinal-sectional plane of the container ( 1 ).
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