JP6216492B2 - Bottle - Google Patents

Description

  The present invention relates to a bottle.

Conventionally, as a bottle formed into a bottomed cylindrical shape with a synthetic resin material, for example, as shown in Patent Document 1 below, a panel portion that is recessed toward the inside in the radial direction is provided around a cylindrical body portion. There is known a configuration in which a plurality of panel portions adjacent in the circumferential direction are formed as pillar portions while being spaced apart in the direction.
According to this configuration, for example, when the temperature of the contents sealed in the bottle is reduced and the inside of the bottle is depressurized, etc., the panel portion is deformed preferentially toward the inside in the radial direction, While suppressing deformation at portions other than the panel portion, the reduced pressure in the bottle is absorbed.
For example, as shown in Patent Document 2, there is known a configuration in which a plurality of annular grooves are provided along the outer surface of the body portion in order to increase the decompression strength of the bottle.

JP 2009-35263 A JP 2004-262500 A

By the way, in the bottle mentioned above, labels, such as a shrink label, a stretch label, a roll label, a tack label, etc., are attached to a trunk | drum from a viewpoint of display of a brand name, the content, etc. and a design improvement.
However, in the above-described conventional technology, the panel portion is recessed toward the inside in the radial direction. Therefore, even when using a shrink label, even in the case of a circular bottle in plan view, The attached state of the label has a substantially polygonal shape in which the portion covering the column portion is a corner portion and the portion covering the panel portion is a side portion, which may cause the label appearance to be uncomfortable (poor appearance).

If the panel width along the circumferential direction of the panel portion is reduced in order to suppress the appearance failure described above, the amount of displacement of the panel portion during decompression may be reduced, and the desired reduced pressure absorption performance may not be exhibited.
Similarly, when a plurality of annular grooves are provided in the body portion of the bottle, there is a possibility that the label follows the shape of the grooves and has a label appearance that undulates in the axial direction.

  Therefore, the present invention has been made in view of the above-described circumstances, and the object thereof is to maintain the desired reduced-pressure absorption performance, and to suppress the appearance defect from occurring on the label attached to the body portion. Is to provide a bottle.

In order to solve the above problems, the present invention proposes the following means.
In the bottle according to the present invention, a plurality of panel portions that are recessed toward the inside in the radial direction are formed in the cylindrical body portion to which the label is attached at intervals in the circumferential direction, and adjacent to each other in the circumferential direction. A bottle having a pillar portion between the panel portions, wherein the panel portion includes a bottom wall portion located radially inside and a side wall extending radially outward from an outer peripheral edge of the bottom wall portion. A rib that protrudes outward in the radial direction with a gap between at least the longitudinal side wall portion facing the circumferential direction is formed on the bottom wall portion, In a cross-sectional view along the radial direction, the top surface located on the radially outer side of the rib is located on a virtual circle that connects the top portions located on the radially outer side of the plurality of column portions along the circumferential direction. The rib width along the circumferential direction of the top surface is a panel along the circumferential direction of the panel portion. It is characterized in that it is set to 10% or more 38.5% less.

With such a feature, when the inside of the bottle is depressurized, the bottom wall portion is displaced inward in the radial direction around the connection portion between the bottom wall portion and the side wall portion in the panel portion. That is, by deforming the panel portion preferentially at the time of depressurization, it is possible to absorb changes in the internal pressure (depressurization) of the bottle while suppressing deformation at other parts.
In addition, according to the configuration of the present invention, since the rib protruding toward the outside in the radial direction is disposed on the bottom wall portion, the label attached to the trunk portion so as to cover the panel portion is supported from the inside in the radial direction. be able to. Therefore, when the label is mounted, the label covering the panel portion can be restricted from moving inward in the radial direction. Thereby, it can suppress that a label is drawn inside a panel part, and can suppress that the appearance defect generate | occur | produces in a label.
Further, even when the panel portion is deformed toward the inside in the radial direction during decompression, the displacement of the label is suppressed. As a result, it is possible to suppress the appearance defect from occurring on the label attached to the body part while maintaining the desired reduced-pressure absorption performance.

  In particular, since the top surface of the rib is located on a virtual circle extending in the circumferential direction following the surface shape of each top portion of the plurality of column portions, the label can be supported on the same plane as the column portion in the rib. Thereby, the displacement to the inner side of the radial direction of the label part which covers a panel part can be controlled reliably.

Further, in the bottle of the present invention, the rib width along the circumferential direction of the top surface is set to 10% or more and 38.5% or less of the panel width along the circumferential direction of the panel portion. While maintaining the absorption performance, it is possible to reliably suppress the appearance failure of the label attached to the body.
Moreover, the bottle of the said invention WHEREIN: The said rib may be arrange | positioned with the clearance gap over the perimeter between the said side wall parts.
Moreover, the bottle of the said invention WHEREIN: The connection part with the inner periphery of the said side wall part in the said bottom wall part may be formed in the curved surface shape dented toward the inner side of radial direction.

  The bottle of the present invention further includes a bottom portion that is connected to the lower end of the barrel portion and closes the lower end opening of the barrel portion, and the bottom wall portion of the bottom portion includes a grounding portion located at an outer peripheral edge portion and the grounding portion. A rising peripheral wall portion that extends from the inner side in the radial direction and extends upward, an annular movable wall portion that protrudes inward in the radial direction from the upper end portion of the rising peripheral wall portion, and a radial direction of the movable wall portion A recessed peripheral wall portion extending upward from the inner end portion, and the movable wall portion is rotatable about a connection portion with the rising peripheral wall portion so as to move the recessed peripheral wall portion in the vertical direction. It may be arranged.

  In this case, since the movable wall portion is disposed so as to be rotatable around the connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion in the vertical direction, when the bottle internal pressure fluctuates. By rotating the movable wall portion and absorbing the internal pressure fluctuation, deformation of the shoulder portion and the trunk portion in the bottle radial direction can be suppressed. Therefore, it is possible to reliably suppress the appearance defect from occurring on the label.

  According to the bottle according to the present invention, it is possible to suppress the appearance failure of the label attached to the body portion while maintaining the desired reduced pressure absorption performance.

It is a side view of the bottle in the embodiment of the present invention. (A) is sectional drawing which follows the AA line of FIG. 1, (b) is sectional drawing which follows the BB line of FIG. It is a bottom view of a bottle. It is sectional drawing which follows the CC line of FIG. It is a graph which shows the relationship between the ratio (D1 / D2) of rib width D1 with respect to panel width D2, and absorption capacity (ml).

Hereinafter, bottles according to embodiments of the present invention will be described with reference to the drawings.
1-4, the bottle 1 which concerns on this embodiment is provided with the mouth part 11, the shoulder part 12, the trunk | drum 13, and the bottom part 14, and these 11-14 are on a common axis with each center axis line. It is the schematic structure which was arranged in this order in the state located in.

Hereinafter, the above-described common axis is referred to as the bottle axis O, the mouth 11 side along the bottle axis O direction is referred to as the upper side, the bottom 14 side is referred to as the lower side, and the direction orthogonal to the bottle axis O is referred to as the radial direction. The direction around the bottle axis O is called the circumferential direction.
The bottle 1 is formed integrally with a synthetic resin material by blow molding a preform formed into a bottomed cylindrical shape by injection molding. Further, a cap (not shown) is attached to the mouth portion 11. Further, each of the mouth portion 11, the shoulder portion 12, the trunk portion 13, and the bottom portion 14 has a circular cross-sectional view shape along the radial direction.

A first annular groove 16 is continuously formed over the entire circumference at a connection portion between the shoulder portion 12 and the body portion 13.
The trunk | drum 13 is formed in the cylinder shape, continues to the lower end of the shoulder part 12, and is extended toward the downward direction. Of the body portion 13, an intermediate portion 13 a between both end portions in the bottle axis O direction has a smaller diameter than both end portions. Note that a label such as a shrink label (not shown) is wound around the intermediate portion 13a of the trunk portion 13.

  As shown in FIGS. 1, 3, and 4, the bottom portion 14 is formed in a bottomed cylindrical shape, and an upper end opening is connected to a lower end opening of the body portion 13, and a lower end opening of the heel portion 17. And a bottom wall portion 19 whose outer peripheral edge portion is a grounding portion 18.

The heel portion 17 includes a lower heel portion 27 that is continuous with the ground contact portion 18 from the outside in the radial direction, an upper heel portion 28 that is continuous with the trunk portion 13 from below, and a connection that connects the lower heel portion 27 and the upper heel portion 28. Part 29.
The lower heel portion 27 is formed to have a smaller diameter than the upper heel portion 28, and the connecting portion 29 is gradually reduced in diameter from the upper side to the lower side.
The upper heel portion 28 is the maximum outer diameter portion of the bottle 1 together with both end portions of the body portion 13 in the bottle axis O direction. In addition, a second annular groove 31 is continuously formed over the entire circumference in an intermediate portion along the bottle axis O direction in the upper heel portion 28.
Further, on the outer peripheral surface of the heel portion 17 and the outer peripheral surface of the lower end portion of the body portion 13, an uneven portion 17 a having a low protruding height is formed by, for example, embossing.

  As shown in FIGS. 3 and 4, the bottom wall portion 19 is connected to the ground contact portion 18 from the inside in the radial direction and extends upward, and from the upper end portion of the rising circumferential wall portion 21 to the inside in the radial direction. The ring-shaped movable wall part 22 which protrudes toward is provided, and the depression surrounding wall part 23 extended toward the upper direction from the radial inner end part of the movable wall part 22 is provided.

  The rising peripheral wall portion 21 is gradually reduced in diameter from the lower side toward the upper side. Further, the rising peripheral wall portion 21 is formed with an uneven portion 21a over the entire circumference. The concavo-convex portion 21a has a configuration in which a plurality of protrusions 21b formed in a curved shape protruding toward the inner side in the radial direction are arranged at intervals in the circumferential direction.

The movable wall portion 22 is formed in a curved shape protruding downward, and gradually extends downward from the outside in the radial direction toward the inside. The movable wall portion 22 and the rising peripheral wall portion 21 are connected via a curved surface portion 25 that protrudes upward. The movable wall portion 22 is rotatable about a curved surface portion (connection portion with the rising peripheral wall portion 21) 25 so that the depressed peripheral wall portion 23 is moved upward.
In addition, a plurality of ribs 41 are radially arranged around the bottle axis O on the movable wall portion 22. The rib 41 has a configuration in which a plurality of concave portions 41a that are recessed in a curved shape upward are intermittently disposed along the radial direction.

  The depressed peripheral wall portion 23 is disposed coaxially with the bottle shaft O, and a top wall 24 disposed coaxially with the bottle shaft O is connected to an upper end portion of the depressed peripheral wall portion 23 and the top wall. The whole of 24 has a top cylinder shape.

The depressed peripheral wall portion 23 is formed in a multistage cylindrical shape whose diameter is gradually increased from the upper side toward the lower side. Specifically, the depressed peripheral wall portion 23 includes a lower cylindrical portion 23a that is gradually reduced in diameter from the radially inner end portion of the movable wall portion 22 and a gradually decreasing diameter from the outer peripheral edge portion of the top wall 24 toward the lower portion. The upper cylinder part 23b which is diameter-expanded and is smaller than the lower cylinder part 23a, and the annular step part 23c which connects both these cylinder parts 23a and 23b are provided.
The lower cylinder portion 23a is connected to the radially inner end portion of the movable wall portion 22 via a curved surface portion 26 that protrudes downward. The curved surface portion 26 protrudes obliquely downward toward the inner side in the radial direction. Moreover, the lower cylinder part 23a is formed in circular shape by the cross sectional view along radial direction.
The annular step 23c is formed in a concave curved shape that is recessed toward the outside in the radial direction. The annular step portion 23 c is located above the upper end portion of the rising peripheral wall portion 21 or at an equivalent height.

  The upper cylindrical portion 23b is formed with a plurality of protruding portions 23d extending inward in the radial direction, and the protruding portions 23d adjacent to each other in the circumferential direction are formed with each other in the circumferential direction. A rectangular tube portion 23f having a polygonal shape with the intermediate portion 23e as a corner portion and the overhang portion 23d as a side portion is formed.

The projecting portions 23d are formed in a curved shape projecting outward in the radial direction when viewed from the bottom, and a plurality of projecting portions 23d are arranged at intervals in the circumferential direction on the upper cylindrical portion 23b of the recessed peripheral wall portion 23. In the present embodiment, three projecting portions 23d are formed, and the shape of the rectangular tube portion 23f viewed from the bottom is an equilateral triangle. In the longitudinal cross-sectional view along the bottle axis O direction shown in FIG. 3, the overhang portion 23 d is formed in a curved surface shape protruding toward the inside in the radial direction.
Further, the portion 23e between the overhanging portions 23d is formed in a curved surface protruding outward in the radial direction in a bottom view, and the end portions along the circumferential direction of the overhanging portions 23d adjacent in the circumferential direction are respectively It is linked separately.

  Here, as shown in FIGS. 1 and 2, a plurality of vacuum absorbing panel portions 51 that are recessed inward in the radial direction are formed in the intermediate portion 13 a of the body portion 13 at intervals in the circumferential direction. Has been. And in the trunk | drum 13, the part located between the panel parts 51 adjacent in the circumferential direction comprises the pillar part 52 extended along the bottle axis | shaft O direction. That is, the body portion 13 is provided with concave panel portions 51 and convex column portions 52 alternately arranged in the circumferential direction.

  The panel portion 51 has a bottom wall portion 53 formed in a rectangular shape with the bottle axis O direction as a longitudinal direction when viewed from the outside in the radial direction, and is erected from the outer peripheral edge of the bottom wall portion 53 toward the outside in the radial direction. And a side wall 54 that surrounds the entire bottom wall 53.

Among the side wall parts 54, a pair of vertical side wall parts 54a extending in the bottle axis O direction and connected to both ends in the circumferential direction of the bottom wall part 53 are arranged on the outer side in the circumferential direction from the inner side to the outer side in the radial direction (each vertical side wall part 54a). It is set as the inclined surface which inclines toward (separating direction). And the column part 52 located between the vertical side wall parts 54a of the panel part 51 adjacent in the circumferential direction has the cross-sectional view shape orthogonal to the bottle axis | shaft O, and the magnitude | size of the circumferential direction toward the outer side from radial inside. It is formed in a trapezoidal shape. Further, the top portion 52 a located on the outer side in the radial direction in the column portion 52 is formed in a curved shape protruding toward the outer side in the radial direction, and is the maximum outer diameter portion of the intermediate portion 13 a in the body portion 13.
On the other hand, a pair of side wall parts 54b which are located in the both ends of the bottle axis | shaft O direction among the side wall parts 54 and are extended in the circumferential direction are extended toward the outer side from the inner side of radial direction.

  And the rib 55 which protrudes toward the outer side of radial direction is formed in the center part of the bottom wall part 53. As shown in FIG. The rib 55 is formed in a rectangular shape having the bottle axis O direction as a longitudinal direction when viewed from the outside in the radial direction, and is disposed with a gap around the entire circumference with the side wall portion 54. That is, the rib 55 is disposed in an island shape inside the panel portion 51.

In a cross-sectional view along the radial direction of the rib 55 (see FIG. 2A), the top surface 55a positioned on the outer side in the radial direction is formed in a curved surface shape protruding toward the outer side in the radial direction. The top surface 55 a is located on a virtual circle L extending in the circumferential direction following the surface shape of each top portion 52 a in the plurality of column portions 52, and is the maximum outer diameter portion of the intermediate portion 13 a in the trunk portion 13.
The rib width D1 along the tangential direction of the intermediate portion 13a on the top surface 55a is set to 10% or more and 38.5% or less of the panel width D2 along the tangential direction of the intermediate portion 13a of the panel portion 51.

  Of the wall portions that define the ribs 55, the pair of vertical wall portions 55b that are located at both ends in the circumferential direction and extend in the bottle axis O direction are inclined toward the inner side in the circumferential direction from the inner side to the outer side in the radial direction. doing. On the other hand, among the wall portions that define the rib 55, the pair of lateral ribs 55c that are positioned at both ends in the bottle axis O direction and extend in the circumferential direction are from the outside in the bottle axis O direction as they go from the inside in the radial direction to the outside. Inclined inward. Therefore, the rib 55 is formed in a trapezoidal shape in which the width in the bottle axis O direction and the circumferential direction are gradually reduced from the inner side to the outer side in the radial direction.

  As shown in FIGS. 2A and 2B, the connecting portion 53a of the bottom wall portion 53 with the inner peripheral edge of the side wall portion 54 is a longitudinal sectional view along the bottle axis O direction (see FIG. 2B). And in a cross-sectional view along the radial direction (see FIG. 2A), it is formed in a curved shape that continues from the inner peripheral edge of the side wall portion 54 and is recessed toward the inner side in the radial direction.

In the present embodiment, when the inside of the bottle 1 is depressurized, the bottom wall portion 53 is displaced toward the inside in the radial direction around the connection portion 53a between the bottom wall portion 53 and the side wall portion 54 in the panel portion 51. become. That is, by deforming the panel portion 51 preferentially at the time of depressurization, it is possible to absorb changes in the internal pressure (depressurization) of the bottle 1 while suppressing deformation at other portions (for example, the column portion 52 and the shoulder portion 12).
Moreover, in the present embodiment, since the rib 55 projecting outward in the radial direction is formed on the bottom wall portion 53, the label wound around the trunk portion 13 so as to cover the panel portion 51 is supported from the inside in the radial direction. be able to. Therefore, it is possible to restrict the label covering the panel unit 51 from moving inward in the radial direction when the label is mounted. Thereby, it can suppress that a label is drawn in the inside of the panel part 51, and can suppress that the appearance defect generate | occur | produces in a label.
Further, even when the panel portion 51 is deformed toward the inside in the radial direction during decompression, the displacement of the label is suppressed. As a result, it is possible to prevent the appearance defect from occurring in the label wound around the body portion 13 while maintaining the desired reduced pressure absorption performance.

  In particular, since the top surface 55a of the rib 55 is located on the virtual circle L extending in the circumferential direction following the surface shape of each top portion 52a of the plurality of column portions 52, the rib 55 is flush with the column portion 52. Can support the label. Thereby, the displacement to the inner side of the radial direction of the label part which covers the panel part 51 can be controlled reliably.

Furthermore, in the present embodiment, the movable wall portion 22 is disposed so as to be rotatable around the curved surface portion 25 so as to move the depressed peripheral wall portion 23 in the bottle axis O direction. When it fluctuates, the radial deformation of the shoulder portion 12 and the trunk portion 13 can be suppressed by rotating the movable wall portion 22 to absorb the fluctuation of the internal pressure. Therefore, it is possible to reliably suppress the appearance defect from occurring on the label.
Further, when the reduced pressure absorption function by the movable wall portion 22 is sufficient, the movable wall portion 22 can be preferentially displaced under reduced pressure to suppress (prevent) the deformation of the panel portion 51.
In this case, for example, the rib width D1 can be formed as large as possible, and it is possible to more reliably prevent appearance defects from occurring on the label.

  Here, as shown in FIG. 5, the inventor of the present invention has a ratio (D1 / D2) of the rib width D1 to the panel width D2 and an absorption capacity (ml) when the bottle 1 is in a reduced pressure state. We examined how the relationship changed. The bottle 1 used in this verification has an internal capacity of 500 ml, and six panel portions 51 having the same shape are arranged at equal intervals in the circumferential direction of the body portion 13. Moreover, it was set as the structure which the bottom wall part 19 does not deform | transform substantially at the time of pressure reduction, and the absorption capacity of only the panel part 51 was verified by analysis.

In this test, the ratio of the rib width D1 to the panel width D2 is adjusted by changing the rib width D1 by 1 (mm) in the range of 6 (mm) to 12 (mm) without changing the panel width D2. did. Specific conditions are as follows.
<Sample 1> Rib width D1 = 6, panel width D2 = 26 mm (D1 / D2 = 23.1%)
<Sample 2> Rib width D1 = 7, panel width D2 = 26 mm (D1 / D2 = 26.9%)
<Sample 3> Rib width D1 = 8, panel width D2 = 26 mm (D1 / D2 = 30.8%)
<Sample 4> Rib width D1 = 9, panel width D2 = 26 mm (D1 / D2 = 34.6%)
<Sample 5> Rib width D1 = 10, panel width D2 = 26 mm (D1 / D2 = 38.5%)
<Sample 6> Rib width D1 = 11, Panel width D2 = 26 mm (D1 / D2 = 42.3%)
<Sample 7> Rib width D1 = 12, Panel width D2 = 26 mm (D1 / D2 = 46.2%)

As shown in FIG. 5, as the ratio of the rib width D1 to the panel width D2 increases (as the rib width D1 increases), the support portion of the label is enlarged in the panel portion 51. It can be seen that the absorption capacity is reduced, although the occurrence of the appearance defect is reduced. Specifically, the absorption capacities of Samples 1 to 7 were 27.4 (ml), 27.3 (ml), 27.2 (ml), 26.9 (ml), 26.6 (ml), and 25, respectively. 2 (ml) and 22.2 (ml).
In particular, when the ratio of the rib width D1 to the panel width D2 is higher than 38.5% (in the case of samples 6 and 7), it can be seen that the absorption capacity is greatly reduced. This is probably because the width of the bottom wall portion 53 is reduced as the rib width D1 is increased, and the amount of displacement of the panel portion 51 at the time of decompression is reduced, so that the desired reduced pressure absorption performance cannot be exhibited. In this case, it is impossible to follow the increase in the reduced pressure strength, and there is a possibility that local deformation occurs in a place other than the panel portion 51 during the reduced pressure.
On the other hand, when the ratio of the rib width D1 to the panel width D2 is 38.5% or less, the absorption capacity of 26 (ml) or more is maintained while suppressing the appearance failure of the label. And was able to demonstrate sufficient vacuum absorption performance.

On the other hand, as the ratio of the rib width D1 to the panel width D2 is reduced (as the rib width D1 is reduced), although the sufficient reduced pressure absorption performance can be exhibited at the time of pressure reduction, the appearance is significantly reduced. This is because, as the rib width D1 is reduced, the support portion of the label is reduced in the panel portion 51. Therefore, the interval between the rib 55 and the column portion 52 is increased, and the label wound around the body portion 13 is attached to the panel portion 51. This is thought to be because it became easier to move inward in the radial direction toward the bottom wall portion 53 of the. Specifically, in Sample 1 above, no deterioration in appearance was observed when the shrink label was attached.
On the other hand, when the ratio of the rib width D1 to the panel width D2 was less than 10%, the appearance of the attached shrink label was deteriorated.

  From the above results, by setting the ratio of the rib width D1 to the panel width D2 to be not less than 10% and not more than 38.5%, the appearance of the label wound around the body portion 13 is deteriorated while maintaining the desired reduced pressure absorption performance. Can be prevented from occurring.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

For example, the number and arrangement of the panel portions 51 and the column portions 52 can be appropriately changed in consideration of the strength required for the bottle 1 and the reduced pressure absorption capacity.
In the embodiment described above, the cross-sectional view shape along the radial direction of each of the shoulder portion 12, the trunk portion 13, and the bottom portion 14 is a circular shape, but is not limited thereto. May be.
Furthermore, in the above-described embodiment, the description has been given of the case where the rib 55 is disposed with a gap around the entire circumference between the rib 55 and the side wall 54. However, the present invention is not limited thereto, and at least between the rib 55 and the vertical side wall 54a. It does not matter as long as there is a gap.

In the above-described embodiment, the case where one rib 55 is provided on each bottom wall portion 53 has been described. However, the present invention is not limited to this, and a plurality of ribs 55 may be provided.
The synthetic resin material forming the bottle 1 may be appropriately changed, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material thereof.
Further, the bottle 1 is not limited to a single layer structure, and may be a laminated structure having an intermediate layer. Examples of the intermediate layer include a layer made of a resin material having a gas barrier property, a layer made of a recycled material, or a layer made of a resin material having an oxygen absorbing property.

  In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the modification examples may be combined as appropriate.

DESCRIPTION OF SYMBOLS 1 ... Bottle 13 ... Body part 14 ... Bottom part 18 ... Grounding part 19 ... Bottom wall part 21 ... Standing peripheral wall part 22 ... Movable wall part 23 ... Depression peripheral wall part 51 ... Panel part 52 ... Column part 53 ... Bottom wall part 54 ... Side wall Part 54a ... Vertical side wall part 55 ... Rib D1 ... Rib width D2 ... Panel width L ... Virtual circle O ... Bottle axis

Claims (4)

A plurality of panel portions that are recessed toward the inside in the radial direction are formed in the cylindrical body portion to which the label is attached at intervals in the circumferential direction, and a column is provided between the panel portions adjacent in the circumferential direction. A bottle made of
The panel portion has a bottom wall portion located on the inner side in the radial direction, and a side wall portion extending from the outer peripheral edge of the bottom wall portion toward the outer side in the radial direction,
The bottom wall portion is formed with a rib protruding toward the outside in the radial direction with a gap between at least the longitudinal side wall portion facing the circumferential direction among the side wall portions,
In a cross-sectional view along the radial direction, the top surface located on the radially outer side of the rib is located on a virtual circle that connects the top portions located on the radially outer side of the plurality of column portions along the circumferential direction. And
The rib width along the circumferential direction of the top surface is set to 10% or more and 38.5% or less of the panel width along the circumferential direction of the panel portion. The bottle according to claim 1, wherein the rib is disposed with a gap over the entire circumference between the rib and the side wall. 3. The bottle according to claim 1, wherein a connection portion between the bottom wall portion and the inner peripheral edge of the side wall portion is formed in a curved shape that is recessed inward in the radial direction. A bottom portion that is continuous with the lower end of the body portion and closes the lower end opening of the body portion;
The bottom wall of the bottom is
A grounding portion located at the outer periphery,
A rising peripheral wall portion extending from the inside in the radial direction to the grounding portion and extending upward;
An annular movable wall portion projecting radially inward from the upper end portion of the rising peripheral wall portion;
A depressed peripheral wall portion extending upward from a radially inner end portion of the movable wall portion,
The said movable wall part is arrange | positioned so that rotation is possible centering | focusing on the connection part with the said rising surrounding wall part so that the said depression surrounding wall part may be moved to an up-down direction . The bottle according to any one of the above.

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