JP2012131561A - Bottle - Google Patents

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JP2012131561A
JP2012131561A JP2010287516A JP2010287516A JP2012131561A JP 2012131561 A JP2012131561 A JP 2012131561A JP 2010287516 A JP2010287516 A JP 2010287516A JP 2010287516 A JP2010287516 A JP 2010287516A JP 2012131561 A JP2012131561 A JP 2012131561A
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bottle
radial direction
bottom wall
panel
axis
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JP5890094B2 (en
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Hiromichi Saito
浩通 斉藤
Hiroaki Imai
宏明 今井
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Yoshino Kogyosho Co Ltd
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Yoshino Kogyosho Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a bottle which has improved handleability of the bottle while maintaining decompression absorbing performance of the bottle.SOLUTION: The diameter of a body 13 becomes smaller gradually toward the inside in a radial direction as it goes toward the inside from the outside in a direction of a bottle axis O, and a bottom wall part 21 located inside in the radial direction at a panel part 17 is formed such that longitudinal section shape thereof along an axial direction is formed as a flat surface.

Description

本発明は、ボトルに関する。   The present invention relates to a bottle.

従来から、合成樹脂材料で有底筒状に形成されたボトルとして、例えば下記特許文献1に示されるように、口部、肩部、胴部及び底部が一体に形成されてなり、胴部に、その径方向の内側に向けて凹んだパネル部が周方向に間隔をあけて複数形成された構成が知られている。
この構成によれば、例えばボトルに密封された内容物の温度が低下してボトル内が減圧した場合に、パネル部が径方向の内側に向けて優先的に変形することで、ボトル内の減圧を吸収するようになっている。
Conventionally, as a bottle formed in a bottomed cylindrical shape with a synthetic resin material, for example, as shown in Patent Document 1 below, a mouth, a shoulder, a trunk, and a bottom are integrally formed, A configuration is known in which a plurality of panel portions recessed toward the inside in the radial direction are formed at intervals in the circumferential 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 decompressed, the panel portion is preferentially deformed toward the inside in the radial direction, thereby reducing the pressure inside the bottle. To absorb.

特開2010−76821号公報JP 2010-76821 A

ところで、上述した従来のボトルでは、ボトル内の減圧吸収性能を維持しつつ、ハンドリング性を向上させることに改善の余地があった。   By the way, in the conventional bottle mentioned above, there existed room for improvement in improving handling property, maintaining the decompression absorption performance in a bottle.

そこで、本発明は、上述した事情に鑑みてなされたものであって、その目的は、ボトルの減圧吸収性能を維持しつつ、ボトルのハンドリング性を向上させることができるボトルを提供することである。   Then, this invention is made | formed in view of the situation mentioned above, The objective is to provide the bottle which can improve the handling property of a bottle, maintaining the decompression absorption performance of a bottle. .

上記課題を解決するために、本発明は以下の手段を提案している。
本発明に係るボトルは、筒状の胴部に、その径方向の内側に向けて凹むパネル部が周方向に間隔をあけて複数形成されてなるボトルであって、前記胴部は、軸方向の外側から内側に向かうに従い径方向の内側に向けて漸次縮径し、前記パネル部における径方向の内側に位置する底壁部は、軸方向に沿う縦断面形状が平坦面に形成されていることを特徴としている。
In order to solve the above problems, the present invention proposes the following means.
The bottle according to the present invention is a bottle in which a plurality of panel portions that are recessed toward the inside in the radial direction are formed in the cylindrical body portion at intervals in the circumferential direction, and the body portion is in the axial direction. The bottom wall portion that is gradually reduced in diameter toward the inner side in the radial direction from the outer side to the inner side of the panel, and the vertical cross-sectional shape along the axial direction is formed on a flat surface in the bottom wall portion that is located on the inner side in the radial direction of the panel It is characterized by that.

このような特徴により、胴部が軸方向の外側から内側に向けて漸次縮径しているので、ボトルを把持する際のハンドリング性を向上させることができる。
さらに、ボトル内が減圧する際にパネル部が径方向内側に向けて優先的に変形することで、ボトル内の減圧を吸収できる。しかも、パネル部の底壁部を平坦面に形成したので、胴部と同様に軸方向の外側から内側に向けて漸次縮径させて底壁部を形成した場合に比べて、径方向の内側への底壁部の変形量を確保することができる。
With such a feature, since the body portion is gradually reduced in diameter from the outside in the axial direction toward the inside, the handling property when gripping the bottle can be improved.
Furthermore, when the inside of the bottle is depressurized, the panel portion is preferentially deformed toward the inside in the radial direction, so that the depressurization in the bottle can be absorbed. Moreover, since the bottom wall portion of the panel portion is formed on a flat surface, it is radially inward compared to the case where the bottom wall portion is formed by gradually reducing the diameter from the outside in the axial direction toward the inside in the same manner as the body portion. The amount of deformation of the bottom wall can be secured.

本発明に係るボトルによれば、ボトルの減圧吸収性能を維持しつつ、ボトルのハンドリング性を向上させることができる。   According to the bottle of the present invention, the handling property of the bottle can be improved while maintaining the reduced pressure absorption performance of the bottle.

本発明の実施形態におけるボトルの側面図である。It is a side view of the bottle in the embodiment of the present invention. 図1のA−A線に沿う断面図である。It is sectional drawing which follows the AA line of FIG. 図1のB−B線に沿う断面図である。It is sectional drawing which follows the BB line of FIG. 図3の拡大断面図である。It is an expanded sectional view of FIG.

以下、図面を参照し、本発明の実施形態に係るボトルを説明する。
本実施形態に係るボトル1は、図1,図2に示されるように、口部11、肩部12、胴部13及び底部14を備え、これら11〜14が、それぞれの中心軸線を共通軸上に位置させた状態で、この順に連設された概略構成となっている。
Hereinafter, bottles according to embodiments of the present invention will be described with reference to the drawings.
1 and 2, the bottle 1 according to the present embodiment includes a mouth portion 11, a shoulder portion 12, a trunk portion 13, and a bottom portion 14, and these 11 to 14 have their respective central axes as a common axis. It is a schematic configuration that is arranged in this order in a state of being positioned above.

以下、上述した共通軸をボトル軸Oといい、ボトル軸O方向に沿って口部11側を上側、底部14側を下側といい、また、ボトル軸Oに直交する方向を径方向といい、ボトル軸Oを中心に周回する方向を周方向という。
なお、ボトル1は、射出成形により有底筒状に形成されたプリフォームが、ブロー成形されて形成され、合成樹脂材料で一体に形成されている。また、口部11には、図示されないキャップが装着される。さらに、口部11、肩部12、胴部13及び底部14はそれぞれ、ボトル軸Oに直交する横断面視形状が円形状となっている。
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 by blow-molding a preform formed into a bottomed cylinder by injection molding, and is integrally formed of a synthetic resin material. Further, a cap (not shown) is attached to the mouth portion 11. Further, each of the mouth portion 11, the shoulder portion 12, the body portion 13, and the bottom portion 14 has a circular shape in a cross-sectional view orthogonal to the bottle axis O.

肩部12と胴部13との接続部分、及び胴部13と底部14との接続部分には、それぞれ径方向の内側に向けて凹んだ凹溝16が全周に亘って連続して形成されている。
胴部13は筒状に形成され、その外周面がボトル軸O方向における外側(上下両端部)から内側(中央部)にかけて径方向の内側に向けて漸次縮径する湾曲形状をなしている。すなわち、胴部13は、ボトル軸O方向の内側は外側に比べて小径に形成され、全体の外観形状がくびれ形状に形成されている。
In the connection portion between the shoulder portion 12 and the body portion 13 and the connection portion between the body portion 13 and the bottom portion 14, a concave groove 16 that is recessed toward the inside in the radial direction is formed continuously over the entire circumference. ing.
The body portion 13 is formed in a cylindrical shape, and its outer peripheral surface has a curved shape that gradually decreases in diameter from the outer side (upper and lower end portions) to the inner side (center portion) in the bottle axis O direction toward the inner side in the radial direction. That is, the body portion 13 is formed with a smaller diameter on the inner side in the bottle axis O direction than the outer side, and the overall appearance is formed in a constricted shape.

ここで、胴部13には、径方向の内側に向けて凹む減圧吸収用のパネル部17が周方向に間隔をあけて複数形成されている。そして、胴部13において、周方向で隣り合うパネル部17同士の間に位置する部分は、ボトル軸O方向に沿って延びる柱部19を構成している。すなわち、胴部13には、凹形状のパネル部17と凸形状の柱部19とが周方向に交互に配設されている。   Here, the body portion 13 is formed with a plurality of vacuum absorbing panel portions 17 that are recessed inward in the radial direction at intervals in the circumferential direction. And in the trunk | drum 13, the part located between the panel parts 17 adjacent in the circumferential direction comprises the pillar part 19 extended along the bottle axis | shaft O direction. That is, in the body portion 13, the concave panel portions 17 and the convex column portions 19 are alternately arranged in the circumferential direction.

パネル部17は、径方向の外側から見てボトル軸O方向を長手方向とする矩形状に形成された底壁部21と、底壁部21を全周に亘って取り囲むように立設された側壁部22と、を有している。図1〜3に示すように、側壁部22のうち、周方向の両側に位置してボトル軸O方向に延びる一対の縦側壁部22aは、径方向の内側から外側に向かうにつれ周方向の外側(各縦側壁部22aが離間する方向)に向けて傾斜する傾斜面とされている。そして、周方向で隣り合うパネル部17同士の間に位置する柱部19は、ボトル軸Oに直交する横断面視形状が径方向の内側から外側に向けて周方向の大きさが小さくなる台形状に形成されている。
一方で、側壁部22のうち、ボトル軸O方向の両側で周方向に延びる一対の横側壁部22b(図1参照)は、径方向の内側から外側に向かうにつれボトル軸O方向の外側(各横側壁部22bが離間する方向)に向けて傾斜する傾斜面とされている。
The panel part 17 is erected so as to surround the bottom wall part 21 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 the bottom wall part 21 over the entire circumference. And a side wall portion 22. As shown in FIGS. 1-3, a pair of vertical side wall part 22a which is located in the both sides of the circumferential direction among the side wall parts 22, and is extended in a bottle axis | shaft O direction is a circumferential direction outer side as it goes to an outer side from radial inside. It is set as the inclined surface which inclines toward (the direction which each vertical side wall part 22a spaces apart). The column part 19 positioned between the panel parts 17 adjacent to each other in the circumferential direction is such that the cross-sectional view perpendicular to the bottle axis O decreases in the circumferential direction from the inner side to the outer side in the radial direction. It is formed into a shape.
On the other hand, a pair of side wall portions 22b (see FIG. 1) extending in the circumferential direction on both sides in the bottle axis O direction among the side wall portions 22 are arranged on the outer side (each of the bottle axis O direction from the inner side to the outer side in the radial direction). It is set as the inclined surface which inclines toward the direction which the side wall part 22b spaces apart.

底壁部21は、パネル部17における径方向の内側に位置しており、図2に示すように、ボトル軸Oに沿う縦断面視形状が平坦面に形成されるとともに、図3に示すように、ボトル軸Oに直交する横断面視形状も平坦面に形成されている。すなわち、胴部13において、上述した柱部19はボトル軸O方向における外側から内側にかけて径方向の内側に向けて漸次縮径するくびれ形状をなしている一方で、パネル部17の底壁部21はボトル軸O方向に沿う平面形状をなしている。   The bottom wall portion 21 is located on the inner side of the panel portion 17 in the radial direction, and as shown in FIG. 2, the vertical cross-sectional view shape along the bottle axis O is formed on a flat surface, as shown in FIG. 3. Moreover, the cross-sectional view shape orthogonal to the bottle axis O is also formed on a flat surface. That is, in the trunk portion 13, the column portion 19 described above has a constricted shape that gradually decreases in diameter from the outside toward the inside in the bottle axis O direction, while the bottom wall portion 21 of the panel portion 17. Has a planar shape along the bottle axis O direction.

このように構成されたボトル1内が減圧すると、パネル部17における底壁部21と側壁部22との接続部分を中心にして、底壁部21が径方向の内側に向かって撓むように変形することになる。すなわち、減圧時にパネル部17の底壁部21を優先的に変形させることで、他の部位(例えば、柱部19や肩部12)での変形を伴うことなく、ボトル1の内圧変化(減圧)を吸収できる。   When the inside of the bottle 1 configured as described above is depressurized, the bottom wall portion 21 is deformed so as to bend inward in the radial direction around the connection portion between the bottom wall portion 21 and the side wall portion 22 in the panel portion 17. It will be. That is, when the bottom wall portion 21 of the panel portion 17 is preferentially deformed at the time of depressurization, the internal pressure change (depressurization) of the bottle 1 is not accompanied by deformation at other portions (for example, the column portion 19 and the shoulder portion 12). ) Can be absorbed.

以上、本実施形態によれば、胴部13(柱部19)をボトル軸O方向の外側から内側に向けて縮径するくびれ形状としたので、ボトル1を把持する際のハンドリング性を向上させることができる。
しかも、本実施形態では、パネル部17の底壁部21を平坦面に形成したので、仮に胴部13と同様にボトル軸O方向の外側から内側に向けて縮径させて底壁部21を湾曲させた場合に比べて、減圧吸収時における径方向への底壁部21の変形量を確保できる。
したがって、本実施形態のボトル1によれば、減圧吸収性能を維持しつつ、ボトル1のハンドリング性を向上させることができる。
As mentioned above, according to this embodiment, since the trunk | drum 13 (column part 19) was made into the constriction shape diameter-reduced toward the inner side from the outer side of the bottle axis | shaft O direction, the handleability at the time of holding the bottle 1 is improved. be able to.
In addition, in the present embodiment, since the bottom wall portion 21 of the panel portion 17 is formed on a flat surface, the bottom wall portion 21 is temporarily reduced in diameter from the outside toward the inside in the bottle axis O direction like the barrel portion 13. Compared to the case of bending, it is possible to secure the amount of deformation of the bottom wall portion 21 in the radial direction at the time of absorbing the reduced pressure.
Therefore, according to the bottle 1 of this embodiment, the handleability of the bottle 1 can be improved while maintaining the reduced pressure absorption performance.

ところで、本実施形態では、上述したように底壁部21を平坦面に形成したが、仮に底壁部21を外周縁から中央部に向かうにつれ径方向の内側から外側に向けて膨出させた場合には、減圧時に底壁部21が径方向の内側に向けて反転変形する。具体的には、底壁部21が外周縁から中央部に向かうにつれ径方向の外側から内側に向けて膨出する。この場合は、パネル部17(底壁部21)自体の減圧吸収性能が比較的高く、底壁部21の変形のみで減圧を吸収できるが、柱部19はほとんど変形しない。しかしながら、反転変形の後、ボトル1内をさらに減圧すると、減圧に伴って底壁部21が径方向の内側にさらに変位しようとすることで、ボトル1全体が異変形する。具体的には、ボトル1がボトル軸O方向に直交する横断面形状で三角形状や楕円形状等に変形してしまう。   By the way, in this embodiment, although the bottom wall part 21 was formed in the flat surface as mentioned above, the bottom wall part 21 was temporarily bulged from the inner side to the outer side in the radial direction from the outer peripheral edge toward the central part. In this case, the bottom wall portion 21 is reversely deformed toward the inside in the radial direction during decompression. Specifically, the bottom wall portion 21 bulges from the outside in the radial direction toward the inside as it goes from the outer peripheral edge to the center portion. In this case, the decompression absorption performance of the panel portion 17 (bottom wall portion 21) itself is relatively high, and the decompression can be absorbed only by the deformation of the bottom wall portion 21. However, when the inside of the bottle 1 is further depressurized after the reverse deformation, the entire wall of the bottle 1 is deformed differently as the bottom wall portion 21 tries to be further displaced radially inward with the depressurization. Specifically, the bottle 1 is deformed into a triangular shape, an elliptical shape, or the like with a cross-sectional shape orthogonal to the bottle axis O direction.

これに対して、図4に示す本実施形態のように底壁部21を平坦面に形成した場合には、減圧時に底壁部21が径方向の内側に向けて変位すると、この変位に伴って縦側壁部22aが径方向の外側端部を中心にして柱部19の内側に向けて変位する(図4中矢印参照)。すなわち、柱部19における周方向の両側に位置する縦側壁部22a同士が、接近するように変位することとなる。これにより、縦側壁部22aの底壁部21からの立ち上がり角度が急峻となり、柱部19の径方向に対する剛性を向上させることができる(図4中実線参照)。その結果、ボトル1の減圧時や外力が作用したときに、ボトル1の異変形や柱部19の径方向の内側への折れ等の発生を抑制できる。   On the other hand, when the bottom wall portion 21 is formed on a flat surface as in the present embodiment shown in FIG. 4, if the bottom wall portion 21 is displaced toward the inside in the radial direction during decompression, the displacement is accompanied by this displacement. Thus, the vertical side wall portion 22a is displaced toward the inside of the column portion 19 with the outer end portion in the radial direction as the center (see the arrow in FIG. 4). That is, the vertical side wall portions 22a located on both sides of the column portion 19 in the circumferential direction are displaced so as to approach each other. Thereby, the rising angle from the bottom wall part 21 of the vertical side wall part 22a becomes steep, and the rigidity with respect to the radial direction of the column part 19 can be improved (see the solid line in FIG. 4). As a result, when the bottle 1 is depressurized or when an external force is applied, it is possible to suppress the occurrence of abnormal deformation of the bottle 1 or bending of the column part 19 in the radial direction.

ここで、本願発明者は、上述した本実施形態のボトル(以下、試験ボトルという)、及び比較ボトルのそれぞれについて減圧強度(kPa)と吸収容量(ml)との関係を解析した。なお、比較ボトルとしては、胴部13(柱部19)をボトル軸O方向の外側から内側に向けて縮径するくびれ形状に形成するとともに、パネル部17の底壁部21を胴部13と同様に湾曲面に形成したものを用いた。また、本解析に用いた試験ボトル及び比較ボトルとして、500ml用のものを採用した。   Here, the inventor of the present application analyzed the relationship between the reduced pressure strength (kPa) and the absorption capacity (ml) for each of the bottles of the present embodiment described above (hereinafter referred to as test bottles) and the comparative bottles. In addition, as a comparative bottle, while forming the trunk | drum 13 (column part 19) in the constriction shape diameter-reduced toward the inner side from the outer side of a bottle axis | shaft O direction, the bottom wall part 21 of the panel part 17 is made into the trunk | drum 13. Similarly, the one formed on a curved surface was used. Moreover, the thing for 500 ml was employ | adopted as a test bottle and a comparison bottle used for this analysis.

まず、両ボトルの何れについても、ボトル内を減圧していくと、減圧強度の増加に伴って減圧吸収容量が除々に増加することが確認できた。これは、上述したようにボトル内の減圧によって、パネル部17の底壁部21が径方向の内側に向けて変形したためと考えられる。   First, for both bottles, it was confirmed that when the inside of the bottle was depressurized, the reduced pressure absorption capacity gradually increased as the depressurization strength increased. This is considered because the bottom wall part 21 of the panel part 17 deform | transformed toward the inner side of radial direction by pressure reduction in a bottle as mentioned above.

その後、さらに減圧強度を増加させると、比較ボトルにおいては、減圧強度の増加に追従できず、減圧途中でパネル部17以外の箇所に局部変形が生じる場合があった。比較ボトルに局部変形が生じた時点での吸収容量、すなわち比較ボトルのパネル部17による最大吸収容量は18.2(ml)であった。
一方、試験ボトルにおいては、減圧強度の増加に対して最大吸収容量が27.3(ml)まで耐えることができた。これは、上述したように試験ボトルは、パネル部17の底壁部21が平坦面に形成されているため、比較ボトルに比べてパネル部17の底壁部21が径方向の外側に位置することになる。そのため、減圧時による底壁部21の径方向の内側への変形量を大きく確保できるためだと考えられる。
Thereafter, when the reduced pressure strength is further increased, in the comparative bottle, the increase in the reduced pressure strength cannot be followed, and local deformation may occur in places other than the panel portion 17 during the reduced pressure. The absorption capacity when local deformation occurred in the comparative bottle, that is, the maximum absorption capacity by the panel section 17 of the comparative bottle was 18.2 (ml).
On the other hand, the test bottle was able to withstand the maximum absorption capacity up to 27.3 (ml) against the increase in vacuum strength. As described above, since the bottom wall portion 21 of the panel portion 17 is formed on a flat surface in the test bottle, the bottom wall portion 21 of the panel portion 17 is positioned on the outer side in the radial direction as compared with the comparative bottle. It will be. For this reason, it is considered that a large amount of deformation of the bottom wall portion 21 in the radial direction during decompression can be secured.

以上、本発明の実施形態について図面を参照して詳述したが、具体的な構成はこの実施形態に限られるものではなく、本発明の要旨を逸脱しない範囲の設計変更等も含まれる。   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.

例えば、胴部13の曲率半径等は適宜設計変更が可能である。
また、パネル部17及び柱部19の数や配置等は、ボトル1に要求される強度や減圧吸収容量等を考慮して適宜設計変更が可能である。
また、上述した実施形態では、肩部12、胴部13および底部14のそれぞれのボトル軸Oに直交する横断面視形状を円形状としたが、これに限らず例えば、多角形状にする等適宜変更してもよい。
For example, the design of the curvature radius of the body portion 13 can be changed as appropriate.
Further, the number and arrangement of the panel portions 17 and the column portions 19 can be appropriately changed in consideration of the strength required for the bottle 1 and the reduced pressure absorption capacity.
Further, in the above-described embodiment, the cross-sectional view orthogonal to the bottle axis O of each of the shoulder portion 12, the body portion 13 and the bottom portion 14 is circular, but is not limited thereto, and for example, a polygonal shape is appropriately used. It may be changed.

また、ボトル1を形成する合成樹脂材料は、例えばポリエチレンテレフタレートや、ポリエチレンナフタレート、非晶性ポリエステル等、またはこれらのブレンド材料等、適宜変更してもよい。
さらに、ボトル1は単層構造体に限らず中間層を有する積層構造体としてもよい。この中間層としては、例えばガスバリア性を有する樹脂材料からなる層、再生材からなる層、若しくは酸素吸収性を有する樹脂材料からなる層等が挙げられる。
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.

その他、本発明の趣旨を逸脱しない範囲で、前記実施形態における構成要素を周知の構成要素に置き換えることは適宜可能であり、また、前記変形例を適宜組み合わせてもよい。   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.

1…ボトル
13…胴部
17…パネル部
21…底壁部
DESCRIPTION OF SYMBOLS 1 ... Bottle 13 ... Body part 17 ... Panel part 21 ... Bottom wall part

Claims (1)

筒状の胴部に、その径方向の内側に向けて凹むパネル部が周方向に間隔をあけて複数形成されてなるボトルであって、
前記胴部は、軸方向の外側から内側に向かうに従い径方向の内側に向けて漸次縮径し、
前記パネル部における径方向の内側に位置する底壁部は、軸方向に沿う縦断面形状が平坦面に形成されていることを特徴とするボトル。
In the cylindrical body part, a plurality of panel parts recessed toward the inside in the radial direction are formed at intervals in the circumferential direction,
The body portion gradually decreases in diameter toward the inside in the radial direction from the outside in the axial direction toward the inside.
The bottom wall part located inside the radial direction in the said panel part is formed in the longitudinal cross-sectional shape along an axial direction in the flat surface, The bottle characterized by the above-mentioned.
JP2010287516A 2010-12-24 2010-12-24 Bottle Active JP5890094B2 (en)

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