| 摘要 |
The technical problem to be solved by this invention is to design bottle walls having such a shape as to inhibit cave-in deformation into a dented wall shape caused by recessed areas for fingerhold. The object of this invention is to provide a synthetic resin square bottle which is usable without anxiety, is excellent at firm hold, and has a high vacuum-absorbing function. In a synthetic resin square bottle comprising a body formed by multiple panel walls disposed on the body in a circumferential direction, and a waist portion made of a peripheral groove dented at a roughly middle height position of the body so as to divide each panel wall into an upper panel and a lower panel, recessed areas for fingerhold use are formed in at least a pair of opposing panel walls in a certain area ranging from the waist portion to an upper end portion of the lower panel of each panel wall, and a pair of side ribs is formed on right and left sides of, and in the vicinity of, each recessed area in the lower panel. |
