Bottle

Abstract

There is provided a bottle formed of a synthetic resin material into a cylindrical shape with a bottom, a bottom wall portion of the bottom includes: a ground contact portion which is positioned at an outer circumferential edge portion; a rising peripheral wall portion which is connected to the ground contact portion from an inner side of a bottle radial direction and extends upward; an annular movable wall portion which protrudes from an upper end portion of the rising peripheral wall portion to the inner side of the bottle radial direction; and a depressed peripheral wall portion which extends upward from an inner end portion of the movable wall portion in the bottle radial direction.

1 . A bottle formed of a synthetic resin material into a cylindrical shape with a bottom, a bottom wall portion of the bottom comprising:
 a ground contact portion which is positioned at an outer circumferential edge portion;   a rising peripheral wall portion which is connected to the ground contact portion from an inner side of a bottle radial direction and extends upward;   an annular movable wall portion which protrudes from an upper end portion of the rising peripheral wall portion to the inner side of the bottle radial direction; and   a depressed peripheral wall portion which extends upward from an inner end portion of the movable wall portion in the bottle radial direction,   wherein the movable wall portion is disposed so as to freely revolve about a connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward,   the rising peripheral wall portion extends so as to be gradually reduced in diameter to the inner side of the bottle radial direction from the ground contact portion to the connecting portion with the movable wall portion, and an inclination angle thereof is an angle of equal to or greater than 0° and less than 20° with respect to a bottle axis, and   a height from the ground contact portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is equal to or greater than 3.5 mm and less than or equal to 7.5 mm.   
     
     
         2 . The bottle according to  claim 1 ,
 wherein the movable wall portion extends so as to gradually incline downward from the connecting portion with the rising peripheral wall portion to the inner side of the bottle radial direction, and   wherein an angle between the movable wall portion and the rising peripheral wall portion is equal to or greater than 60° and less than or equal to 85°.   
     
     
         3 . The bottle according to  claim 1 ,
 wherein the movable wall portion extends so as to gradually incline downward from an outer end portion connected to the rising peripheral wall portion to an inner end portion connected to the depressed peripheral wall portion, and   a height from the ground contact portion to the inner end portion of the movable wall portion is 45% or less of a height from the ground contact portion to the outer end portion of the movable wall portion.   
     
     
         4 . The bottle according to  claim 3 ,
 wherein a height of the inner end potion of the movable wall portion from the ground contact portion is equal to or greater than 2 mm.   
     
     
         5 . The bottle according to  claim 2 ,
 wherein the movable wall portion extends so as to gradually incline downward from an outer end portion connected to the rising peripheral wall portion to an inner end portion connected to the depressed peripheral wall portion, and   a height from the ground contact portion to the inner end portion of the movable wall portion is 45% or less of a height from the ground contact portion to the outer end portion of the movable wall portion.