JP6307370B2 - Bottle - Google Patents

Description

  The present invention relates to a bottle.

  Conventionally, for example, as shown in Patent Document 1 below, a plurality of panel portions that are recessed inward in the radial direction are formed in a cylindrical body portion at intervals in the circumferential direction, and are mutually connected in the circumferential direction. A bottle in which a space between adjacent panel portions is formed as a column portion is known.

JP 2007-269359 A

By the way, in the cross section obtained by cutting the body portion in the axial direction, the cross-sectional shapes of the upper and lower ends of the body portion are circular with the same size and the same diameter. In order to adjust the inner volume of the bottle while maintaining these dimensions, for example, it is conceivable to change the size of the concavo-convex shape including the panel portion in the body portion.
However, if you try to adjust the bottle volume simply by changing the size of the irregular shape of the body, there are problems such as being unable to secure the vacuum absorption capacity and strength, and damaging the appearance of the bottle, maintaining the external dimensions However, there was room for improvement in adjusting the internal capacity.

  The present invention has been made in view of such circumstances, and its purpose is to increase the adjustment amount of the internal capacity while maintaining the prescribed outer diameter and suppressing the influence on the appearance. Is to provide a bottle that can.

In order to achieve the above object, a bottle according to the present invention is a bottle comprising a cylindrical body, and a mouth side cylinder and a bottom side cylinder connected to both ends in the axial direction of the body. The body portion is formed with a gradually changing portion that gradually changes the shape of a cross section perpendicular to the axial direction of the body portion between a circular shape and a square shape from one side in the axial direction toward the other side. In the body portion, a plurality of panel portions that are recessed toward the inside in the radial direction are formed at intervals in the circumferential direction, and a space between the panel portions adjacent to each other in the circumferential direction is formed as a column portion, the pillar portion is characterized that you have been formed to be slender enough upward.
According to the bottle of the present invention, by forming the gradually changing portion that gradually changes the cross-sectional shape from the circular shape to the square shape in the body portion, the mouth side cylindrical portion and the bottom side cylindrical portion are defined as the prescribed dimensions of the bottle. It is possible to adjust the inner volume of the bottle without changing the outer diameter. For this reason, the adjustment amount of the internal capacity of the bottle can be increased as compared with the case where the internal capacity is adjusted only by forming an uneven shape on the body while maintaining the suitability of the vending machine of the bottle. Moreover, the size of the uneven shape of the body portion can be properly maintained, and the influence on the appearance of the bottle, the reduced pressure absorption capacity, and the like can be suppressed.

The bottle which concerns on this invention may be the structure by which the cross-sectional shape of the said mouth part side cylinder part and a bottom part side cylinder part is circular.
In this case, even when the bottle rotates about the axis, the state when the mouth side cylinder part and the bottom side cylinder part come into contact with the guide by the vending machine or the like is constant, so for example, the mouth side cylinder part and the bottom part side The vending machine suitability and the like can be favorably maintained as compared with the case where the cross-sectional shape of the cylindrical portion is a square shape.

Furthermore, a bottle according to the present invention, prior Symbol panel portion and the pillar portion may be formed as configured to be inclined in the circumferential direction.
In this case, in addition to the deformation of the panel portion in the radial direction accompanying the change in the internal pressure of the bottle, the entire body portion can be deformed so as to be twisted and expanded or contracted to increase the absorption capacity of the internal pressure change. Moreover, the column part between panel parts becomes a reinforcement rib of a trunk | drum, and the resistance with respect to the force of radial direction can be raised, and the rigidity of a trunk | drum can be ensured. Furthermore, since the panel portion is formed so as to be inclined in the circumferential direction, a large panel area can be secured, and the reduced pressure absorption capacity can be increased.

  According to the bottle of the present invention, it is possible to provide a bottle in which the amount of adjustment of the internal capacity is increased while maintaining the prescribed outer diameter size and suppressing the influence on the appearance.

It is the side view which made the panel part of the bottle in 1st embodiment of this invention the front. It is the side view which made the pillar part of the bottle of FIG. 1 the front. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. It is the side view which made the panel part of the bottle in 2nd embodiment of this invention the front. It is the side view which made the pillar part of the bottle of FIG. 7 the front. It is the side view which made the panel part of the bottle in 3rd embodiment of this invention the front. It is the side view which made the pillar part of the bottle of FIG. 9 the front. It is the side view which made the panel part of the bottle in 4th embodiment of this invention the front. It is the side view which made the pillar part of the bottle of FIG. 11 the front.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The bottle 1 shown in FIGS. 1 and 2 includes a mouth portion 11, a shoulder portion 12, a trunk portion 13, and a bottom portion 14 in order from the top in the drawings. These 11 to 14 are continuously provided from one side to the other side in the common axis direction in a state where the respective central axes are located on the common axis. The bottle 1 is integrally formed of a synthetic resin material such as polyethylene terephthalate by, for example, biaxial stretch blow molding.

  Each of the mouth portion 11, the shoulder portion 12, the trunk portion 13, and the bottom portion 14 has a central axis arranged on a common axis. In the present embodiment, the common axis is referred to as a bottle axis O, and the mouth 11 side is referred to as the upper side and the bottom 14 side is referred to as the lower side along the bottle axis O direction. In addition, a direction orthogonal to the bottle axis O in a plan view viewed from the bottle axis O direction is referred to as a radial direction, and a direction around the bottle axis O is referred to as a circumferential direction.

The mouth portion 11 has a cylindrical shape, and a male screw portion 11a is formed on the outer peripheral surface thereof, and a cap (not shown) is detachably screwed. On the outer periphery of the lower end of the mouth portion 11, a flange-like neck ring 11b is provided so as to protrude over the entire circumference.
The shoulder portion 12 is formed so as to gradually increase in diameter as it goes downward below the mouth portion 11. In the illustrated example, the shoulder 12 is formed in a concave shape when viewed from the outside.

A cylindrical connecting portion (mouth side tube portion) 15 is continuous below the shoulder portion 12. The connecting portion 15 is divided into an enlarged diameter portion 15a on the upper side in the bottle axis O direction and a reduced diameter portion 15b on the lower side in the bottle axis O direction, with a step portion 15c formed in the middle portion in the bottle axis O direction.
Below the connecting portion 15, a cylindrical upper end portion 21 of the cylindrical body portion 13 is continuous. The reduced diameter portion 15b of the connecting portion 15 and the upper end portion 21 of the body portion 13 have the same diameter. Between the reduced diameter portion 15b and the upper end portion 21, an upper peripheral groove 16 that is recessed toward the inside in the radial direction is formed over the entire circumference.

  A heel portion (bottom portion side cylindrical portion) 14 a of the bottomed cylindrical bottom portion 14 is continuous below the cylindrical lower end portion 24 of the body portion 13. The lower end portion 24 of the body portion 13 and the heel portion 14a of the bottom portion 14 have the same diameter, and the diameter-enlarged portion 15a of the connecting portion 15 has the same diameter. Between the lower end portion 24 and the heel portion 14a, a lower circumferential groove 17 that is recessed toward the inside in the radial direction is formed over the entire circumference.

  The heel portion 14 a of the bottom portion 14 constitutes the maximum outer diameter portion of the bottle 1 together with the enlarged diameter portion 15 a of the connecting portion 15. The heel portion 14a and the enlarged diameter portion 15a are set to a prescribed outer diameter size in view of suitability for the production line of the bottle 1 and suitability for a vending machine. Thereby, there is an advantage that the bottle 1 can be stably conveyed on the production line, and there is an advantage that the movement of the bottle 1 can be reliably regulated in the vending machine.

  The vending machine is a known vending machine provided with a stopper piece for restricting the dropping of the bottle in the bottle passage in the column. In the bottle 1 of this embodiment that can be applied to this vending machine, a stopper piece is brought into contact with the connecting portion 15 and the heel portion 14a which are upper and lower cylindrical portions. Thereby, the bottle 1 is locked to the stopper piece so as not to drop. A lower circumferential groove 17 is adjacent in the bottle axis O direction above the heel portion 14a, and an upper circumferential groove 16 is adjacent in the bottle axis O direction below the connecting portion 15. Thereby, the pressure deformation to the inner side in the radial direction of the connecting portion 15 and the heel portion 14a is suppressed, and the bottle 1 is restricted from passing through the stopper position and dropped, and the bottle 1 is stably and reliably held. The

  3 to 6, the body 13 is connected to the cylindrical upper end 21 and the lower step 21 a with a slightly reduced diameter via the second step 21 a below the upper end 21. A first gradually changing portion 22 that gradually changes the shape of the cross section perpendicular to the bottle axis O direction from a circular shape to a substantially hexagonal shape below the first gradually changing portion 22, A second gradually changing portion 23 that gradually changes the cross-sectional shape from the hexagonal shape to the circular shape below the deforming portion 22 and a cylindrical lower end portion 24 that continues below the second gradually changing portion 23 are provided.

  3 indicates a circular outer diameter in the cross section immediately below the second step portion 21a, and K in FIGS. 4 and 5 indicates the hexagonal shape in the cross section below the second gradually changing portion 23. 6 indicates a circular outer diameter in a cross section immediately below the second gradually changing portion 23. In the present embodiment, the boundary between the first gradually changing portion 22 and the second gradually changing portion 23 is substantially at the intermediate position of the body portion 13 in the bottle axis O direction, but the position can be arbitrarily set.

In the cross section of the body portion 13, the circumferential position of each of the hexagonal vertices 25 changes toward one side in the circumferential direction as it goes from the upper side to the lower side of the body portion 13.
Thereby, each hexagonal vertex 25 in the cross section of the body part 13 is a circumferential direction with respect to the bottle axis O direction in a side view (FIGS. 1 and 2) when the body part 13 is viewed from the outside in the radial direction. A ridge line 25a extending so as to incline is presented. Specifically, the ridge line 25a extends obliquely with respect to the bottle axis O direction so as to be located counterclockwise as viewed from above (in the direction of loosening the cap screwed to the mouth portion 11) as it goes upward. The apex 25 has a round chamfer that protrudes outward in the radial direction, and two curves that connect both ends of the chamfered portion in the circumferential direction appear as the ridge line 25a.

  The narrowest neck portion 26 is formed in a portion of the body portion 13 below the center in the bottle axis O direction. The body portion 13 is formed so as to become thinner toward the lower side in the range from the upper end portion 21 to the constricted portion 26, and so as to become thinner toward the upper side in the range from the constricted portion 26 to the lower end portion 24. It is formed.

In addition, a plurality of panel portions 27 that are recessed stepwise toward the radially inner side are formed in the body portion 13 at equal intervals in the circumferential direction, and between the panel portions 27 adjacent to each other in the circumferential direction. Is formed as the column portion 28. The apex 25 is located at a circumferential intermediate portion of the outer surface of each column portion 28. That is, in the cross section of the trunk portion 13, the circumferential position of each column portion 28 changes toward the circumferential side as it goes from the upper side to the lower side of the trunk portion 13.
Thereby, the panel part 27 and the column part 28 are formed so that it may incline in the circumferential direction with respect to the bottle axis | shaft O direction by the side view which looked at the trunk | drum 13 from the radial direction outer side. In the illustrated example, the shape of the panel portion 27 in the side view is an inverted trapezoidal shape that is long in the bottle axis O direction and has a slightly short lower side. The four corners of each panel portion 27 are curved in a round chamfer shape, and relieve stress concentration even when deformed by a change in internal pressure.

The column part 28 is formed to extend in the bottle axis O direction with a narrower width in the circumferential direction than the panel part 27, and to become thinner as it goes upward.
The outer surface of each column portion 28 and the outer surfaces of the upper and lower end portions 21 and 24 are connected to each other without a step. Thereby, for example, when the internal pressure of the bottle changes, it is possible to suppress the occurrence of a location where stress is concentrated on the outer surfaces of the column portions 28 and the upper and lower end portions 21 and 24.
By providing the constricted portion 26, the panel portion 27 and the column portion 28 are slightly inclined in the radial direction.

In the present embodiment, a plurality of panel portions 27 and column portions 28 that are inclined in a certain direction are formed in the cylindrical body portion 13 at equal intervals in the circumferential direction, and each panel portion 27 is depressed so as to be surrounded by a step. By forming in a shape, the internal pressure change absorption function is imparted to the body portion 13 by each panel portion 27.
The barrel portion 13 is deformed in a reduced diameter so that the entire barrel portion 13 is twisted and deformed in addition to the inward deformation of the panel portion 27 due to the occurrence of decompression in the bottle 1, thereby providing a larger decompression absorption function. Demonstrate. On the contrary, the body part 13 exhibits a larger pressure increasing absorption function by being expanded and deformed so that the entire body part 13 is twisted and deformed in addition to the bulging deformation of the panel part 27 outward in the radial direction. By forming the panel portion 27 to be inclined in the circumferential direction, a large panel area can be secured. The column part 28 between the panel parts 27 functions as a reinforcing rib, and increases the resistance against the radial force to ensure the rigidity of the body part 13.

  Referring to FIGS. 1 and 2, the second gradually changing portion 23 and the lower end portion 24 of the body portion 13 are lower end ridge line portions 29 that have a downwardly convex arc shape when viewed from the outside in the radial direction. Connected through. The lowest end position of the lower end ridge line portion 29 is the lowest end position of the second gradually changing portion 23.

As described above, the bottle 1 according to the present embodiment includes the cylindrical body 13, the mouth-side cylinder (connecting part 15) and the bottom-side cylinder that are connected to both ends of the body 13 in the bottle axis O direction. (The heel part 14a), and the body part 13 has a cross section perpendicular to the bottle axis O direction, and the cross-sectional shape of the body part 13 changes from a circular shape toward the other side in the bottle axis O direction. By forming the gradually changing portions 22 and 23 that gradually change into a square shape, the mouth side cylinder portion and the bottom portion side cylinder portion have the specified dimensions, and the inner diameter of the bottle 1 is not changed without changing the outer diameter of the bottle 1. Since the adjustment can be performed, the adjustment amount of the inner capacity of the bottle 1 is compared with the case where the inner capacity is adjusted only by forming an uneven shape on the body portion 13 while maintaining the suitability of the bottle 1 for the vending machine. Can be increased.
Further, if the inner volume of the bottle 1 is adjusted simply by changing the size of the concave and convex shape of the barrel portion 13, if the adjustment amount of the inner volume is large, the appearance of the barrel portion 13 may be damaged, or the panel portion 27 and the column portion 28. However, according to this embodiment, the size of the uneven shape of the body portion 13 can be appropriately maintained, and the appearance of the bottle 1 and the function of the uneven shape of the body portion 13 can be maintained. The influence of can be suppressed.

  Further, the bottle 1 has a circular cross-sectional shape of the mouth side cylinder part (connecting part 15) and the bottom side cylinder part (heel part 14a), so that even if the bottle 1 rotates about the axis, Since the state when the mouth side cylinder part and the bottom side cylinder part are in contact with the guide by a vending machine or the like is constant, the cross-sectional shape of the mouth side cylinder part and the bottom side cylinder part is square compared to the case Thus, the suitability of the vending machine can be maintained well.

  Further, the bottle 1 is formed with a plurality of panel portions 27 recessed in the radial direction toward the inner side in the radial direction at intervals in the circumferential direction, and between the panel portions 27 adjacent to each other in the circumferential direction. Formed as a column portion 28, the panel portion 27 and the column portion 28 are formed so as to be inclined in the circumferential direction, so that in addition to the deformation in the radial direction of the panel portion 27 accompanying the change in the internal pressure of the bottle 1, the body portion 13 can be deformed so as to be twisted and expanded or contracted to increase the absorption capacity of the internal pressure change. Moreover, the column part 28 between the panel parts 27 becomes a reinforcement rib of the trunk | drum 13, and the resistance with respect to the force of radial direction can be raised, and the rigidity of the trunk | drum 13 can be ensured. Furthermore, since the panel part 27 is formed so as to be inclined in the circumferential direction, a large panel area can be ensured and the reduced pressure absorption capacity can be increased.

<Second embodiment>
Next, a second embodiment of the present invention will be described with reference to FIGS.
The bottle 101 of this embodiment has a cylindrical upper body portion 113a between the upper end portion 21 of the body portion 113 and the connecting portion 15 which are shorter in the bottle axis O direction than the first embodiment. Especially different. The other components that are the same as those in the above embodiment are given the same reference numerals, and detailed description thereof is omitted. 7, cross-sectional positions corresponding to FIGS. 3 to 6 are indicated by the same cross-sectional lines as in FIG.

  An upper body portion 113a having the same diameter as the reduced diameter portion 15b is connected to the lower portion of the connecting portion 15 at the upper portion of the bottle 101. An upper circumferential groove 16 is formed over the entire circumference between the connecting portion 15 and the upper body portion 113a, and a second circumferential groove 16a similar to the upper circumferential groove 16 is formed on the outer periphery of the upper body portion 113a. The third circumferential groove 16b is formed over the entire circumference. These circumferential grooves 16, 16a, and 16b are arranged at equal intervals in the bottle axis O direction, and reinforce the entire upper body 113a to increase a resistance against a radial force. Further, when the internal pressure of the bottle 101 changes or a load in the bottle axis O direction is applied, the bottle 101 may be elastically deformed in the bottle axis O direction by narrowing or widening the groove width of the plurality of circumferential grooves. .

  The body portion 113 has the same configuration as that of the first embodiment except that the body portion 113 is shortened in the bottle axis O direction by an amount corresponding to the upper body portion 113a. However, in the example shown in the figure, the ridge line 25a exhibited by each of the square vertices 25 of the cross section of the body portion 113, and the panel portion 27 and the column portion 28 of the body portion 113 are first implemented in the circumferential direction at the respective upper and lower ends. Since the relative displacement is made by the same amount as the shape, the ridgeline 25a, the panel portion 27, and the column portion 28 are inclined in the circumferential direction with respect to the bottle axis O direction in a side view when the body 113 is viewed from the outside in the radial direction. The inclination may be made equal to that of the first embodiment by adjusting the amount of the relative displacement.

  Also in the bottle 101 of this embodiment, as in the first embodiment, a gradually changing portion 22 that gradually changes the cross-sectional shape of the body portion 113 from a circular shape to a square shape as it goes from one side to the other side in the bottle axis O direction. By forming 23, it is possible to increase the adjustment amount of the internal capacity while maintaining the prescribed outer diameter and suppressing the influence on the appearance.

<Third embodiment>
Next, a third embodiment of the present invention will be described with reference to FIGS.
The bottle 201 of this embodiment is different from the first embodiment in that the ridgeline 125a exhibited by each of the corners 125 of the square shape in the cross section of the body portion 213, and the panel portion 127 and the column portion 128 of the body portion 213 are circumferential. It is particularly different in that it is not inclined in the direction and is formed with a constant circumferential position. The other components that are the same as those in the above embodiment are given the same reference numerals, and detailed description thereof is omitted. 9, cross-sectional positions corresponding to FIGS. 3 to 6 are indicated by the same cross-sectional lines as in FIG.

  The body portion 213 is connected to the lower portion of the cylindrical upper end portion 21 with a slightly reduced diameter via the second step portion 21a, and the cross-sectional shape gradually changes from a circular shape to a substantially hexagonal shape below the second step portion 21a. A first gradually changing portion 22 that is continuously connected to a lower portion of the first gradually changing portion 22, and a second gradually changing portion that gradually changes the cross-sectional shape from the hexagonal shape to the circular shape below the first gradually changing portion 22. Part 23. The boundary between the first gradually changing portion 22 and the second gradually changing portion 23 is substantially at an intermediate position of the trunk portion 213 in the bottle axis O direction.

In the cross section of the body portion 213, the circumferential position of each of the hexagonal apexes 125 is constant over the top and bottom of the body portion 13 and does not change according to the vertical position of the body portion 13.
Thereby, the ridgeline 125a which each hexagonal vertex 125 in the cross section of the trunk | drum 213 exhibits is formed so that it may become substantially parallel to the bottle axis | shaft O direction when each ridgeline 125a is seen from the front in radial direction, respectively. Is done. The apex 125 is chamfered, and two curves that connect both ends in the circumferential direction of the chamfered portion appear as the ridgeline 125a.

  The narrowest constricted portion 26 is formed in a portion of the body 213 below the center in the bottle axis O direction. The body portion 213 is formed so as to become narrower in the range from the upper end portion 21 to the constricted portion 26, and to become thinner in the range from the constricted portion 26 to the lower end portion 24. It is formed.

  In addition, a plurality of panel portions 127 that are recessed stepwise toward the radially inner side are formed in the body portion 213 at equal intervals in the circumferential direction, and between the panel portions 127 adjacent to each other in the circumferential direction. Is formed as the column portion 128. The apex 125 is located in the middle in the circumferential direction of the outer surface of the column part 128. The panel part 127 and the column part 128 are formed so as to be substantially parallel to the bottle axis O direction when the panel part 127 and each column part 128 are viewed from the front in the radial direction. In the illustrated example, the shape of the panel portion 127 in the side view is an inverted trapezoidal shape that is long in the bottle axis O direction and has a slightly lower bottom side.

The column portion 128 is formed to extend in the bottle axis O direction with a circumferential width narrower than that of the panel portion 127 and to become slightly thinner toward the upper side.
The outer surface of each column portion 128 and the outer surfaces of the upper and lower end portions 21 and 24 are connected to each other without a step.
By providing the constricted portion 26, the panel portion 127 and the column portion 128 are slightly inclined in the radial direction.

  Also in the bottle 201 of the present embodiment, as in the first embodiment, a gradually changing portion 22 that gradually changes the cross-sectional shape of the body portion 213 from a circular shape to an angular shape as it goes from one side to the other side in the bottle axis O direction. By forming 23, it is possible to increase the adjustment amount of the internal capacity while maintaining the prescribed outer diameter and suppressing the influence on the appearance.

<Fourth embodiment>
Next, a fourth embodiment of the present invention will be described with reference to FIGS.
The bottle 301 of this embodiment has the upper body 113a between the upper end 21 of the body 313 shortened in the bottle axis O direction and the connecting portion 15 with respect to the first embodiment, and The ridgeline 125a that each vertex 125 of the square shape in the cross section of the part 313 presents, and the panel part 127 and the pillar part 128 of the trunk part 313 are not inclined in the circumferential direction but are formed with a constant circumferential position. Especially different. The other components that are the same as those in the above embodiment are given the same reference numerals, and detailed description thereof is omitted. 11, cross-sectional positions corresponding to FIGS. 3 to 6 are indicated by the same cross-sectional lines as in FIG.

An upper body 113a having the same diameter as that of the reduced diameter portion 15b is connected to the lower portion of the upper portion of the bottle 301, and the upper circumferential groove 16 extends between the connection portion 15 and the upper body 113a. The second circumferential groove 16a and the third circumferential groove 16b are formed over the entire circumference of the upper body 113a.
The barrel portion 313 is shortened in the bottle axis O direction by the amount of the upper barrel portion 113a with respect to the first embodiment, and the ridgeline 125a, the panel portion 127, and the column portion 128 are each front in the radial direction. When viewed from the above, it has the same configuration as the first embodiment except that it is formed so as to be substantially parallel to the bottle axis O direction.

  Also in the bottle 301 of the present embodiment, as in the first embodiment, the gradually changing portion 22 that gradually changes the cross-sectional shape of the body portion 313 from a circular shape to an angular shape as it goes from one side to the other side in the bottle axis O direction. By forming 23, it is possible to increase the adjustment amount of the internal capacity while maintaining the prescribed outer diameter and suppressing the influence on the appearance.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above embodiment, as an example of the bottle, the cross-section of the mouth side cylinder part and the bottom side cylinder part is circular, and this circular shape is square at the middle part of the barrel in the bottle axis O direction. Although the gradual change part is provided, the cross-section of the mouth side cylinder part and the bottom part side cylinder part is square, and this square shape is gradually changed so as to be circular at the middle part in the bottle axis O direction of the body part. It is good also as a structure which provides a part.
The synthetic resin material forming the bottle is not limited to polyethylene terephthalate, but may be appropriately changed to polyethylene naphthalate, amorphous polyester, or a blended material thereof.
The bottle 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 absorption property.
In addition, it is possible to appropriately replace the components in the embodiment with known components without departing from the spirit of the present invention.

1,101,201,301 Bottle 13,113,213,313 Body 14a Heel (bottom side cylinder)
15 Connecting part (mouth side tube part)
22 First gradually changing part (gradually changing part)
23 Second gradually changing part (gradually changing part)
27,127 Panel part 28,128 Column part O Bottle shaft

Claims (3)

In a bottle comprising a cylindrical body, and a mouth side cylinder and a bottom side cylinder connected to both ends in the axial direction of the body,
The body portion is formed with a gradually changing portion that gradually changes the shape of a cross section perpendicular to the axial direction of the body portion between a circular shape and a square shape from one side in the axial direction toward the other side. ,
In the body portion, a plurality of panel portions that are recessed toward the inside in the radial direction are formed at intervals in the circumferential direction, and between the panel portions adjacent to each other in the circumferential direction are formed as column portions,
The pillar portion, a bottle characterized that you have been formed to be slender enough upward.   The bottle according to claim 1, wherein a cross-sectional shape of the mouth side cylinder part and the bottom side cylinder part is a circular shape. Bottle according to claim 1 or 2 before Symbol panel portion and the pillar portion, characterized in that it is formed to be inclined in the circumferential direction.

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