| 摘要 |
A synthetic resin bottle which can be deformed and reduced in volume easily, sufficiently flatly and restorably by forming at least one reversal line at the shoulder part, the body part and the bottom part of the bottle body over the entire circumference in the longitudinal direction, making at least one of sections delimited by the reversal lines serve as a shell part where at least the body part has a relatively high rigidity substantially entirely, making other sections serve as resiliently reversible parts where at least the body part has a relatively low rigidity substantially entirely, standing a tubular mouth part at the shoulder part, and arranging the entire reversible parts so as to retract easily into the shell part and to restore to the original shape.
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