JP2013023278A - Bottle - Google Patents

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Publication number
JP2013023278A
JP2013023278A JP2011163103A JP2011163103A JP2013023278A JP 2013023278 A JP2013023278 A JP 2013023278A JP 2011163103 A JP2011163103 A JP 2011163103A JP 2011163103 A JP2011163103 A JP 2011163103A JP 2013023278 A JP2013023278 A JP 2013023278A
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JP
Japan
Prior art keywords
bottle
wall portion
peripheral wall
wall section
rising peripheral
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Pending
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JP2011163103A
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Japanese (ja)
Inventor
Goro Kurihara
吾郎 栗原
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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Application filed by Yoshino Kogyosho Co Ltd filed Critical Yoshino Kogyosho Co Ltd
Priority to JP2011163103A priority Critical patent/JP2013023278A/en
Priority to TW101126672A priority patent/TWI603893B/en
Priority to PCT/JP2012/068822 priority patent/WO2013015312A1/en
Priority to EP12817631.0A priority patent/EP2738107B1/en
Priority to CA2841101A priority patent/CA2841101C/en
Priority to KR1020137027405A priority patent/KR101894448B1/en
Priority to AU2012287900A priority patent/AU2012287900B2/en
Priority to US14/131,595 priority patent/US8998026B2/en
Priority to CN201280019689.1A priority patent/CN103492273B/en
Publication of JP2013023278A publication Critical patent/JP2013023278A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To ensure decompression absorption performance while suppressing occurrence of bottom dropping.SOLUTION: A bottle 1 is provided, in which a bottom wall section 19 of a bottom section 14 comprises a ground-contacting section 18, a rising peripheral wall section 21 extending upward and continued from the bottle radial inside to the ground-contacting section, an annular movable wall section 22 protruding toward the bottle radial inside from the top end of the rising peripheral wall section, and a recessed peripheral wall section 23 extending upward from the bottle radial inside of the movable wall section. The movable wall section is disposed rotatably around a connection portion 25 with the rising peripheral wall section so as to move the recessed peripheral wall section upward. The rising peripheral wall section extends so as to be gradually inclined toward the bottle radial inside from the ground-contacting section toward the connection portion with the movable wall section, and the inclination angle θ is 10 degrees or less relative to the bottle axis O.

Description

本発明は、ボトルに関するものである。   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、底部の底壁部が、外周縁部に位置する接地部と、該接地部にボトル径方向の内側から連なり上方に向けて延びる立ち上がり周壁部と、該立ち上がり周壁部の上端部からボトル径方向の内側に向けて突出する可動壁部と、該可動壁部のボトル径方向の内端部から上方に向けて延びる陥没周壁部と、を備え、可動壁部が陥没周壁部を上方に向けて移動させるように、立ち上がり周壁部との接続部分を中心に回動することにより、ボトル内の減圧を吸収する構成が知られている。   Conventionally, as a bottle formed into a bottomed cylindrical shape with a synthetic resin material, for example, as shown in Patent Document 1 below, the bottom wall portion of the bottom portion is connected to a grounding portion located on the outer peripheral edge portion, and the grounding portion. A rising peripheral wall portion extending from the inside in the bottle radial direction and extending upward; a movable wall portion protruding from the upper end portion of the rising peripheral wall portion toward the inside in the bottle radial direction; and an inner portion of the movable wall portion in the bottle radial direction. A bottle by rotating around a connecting portion with the rising peripheral wall so that the movable wall moves the depressed peripheral wall upward. A configuration that absorbs the reduced pressure inside is known.

特開２０１０−１２６１８４号公報JP 2010-126184 A

しかしながら、前記従来のボトルでは、内容物の充填時や内圧上昇時等に、可動壁部が立ち上がり周壁部との接続部分を中心に下方に回動してしまい、可動壁部の一部が接地部の配設位置に到達したり接地部よりも下方に突出したりして、接地安定性の不具合を招く、いわゆる底落ちが生じ易くなるおそれがあった。
なお、本実施形態における「底落ち」とは、上記したように接地安定性の不具合を招く現象を言う。 However, in the conventional bottle, when the contents are filled or when the internal pressure is increased, the movable wall portion rises and pivots downward about the connection portion with the peripheral wall portion, and a part of the movable wall portion is grounded. There is a possibility that so-called bottom falling may occur, which may lead to a problem in grounding stability by reaching the position where the part is disposed or projecting downward from the grounding part.
Note that the “bottom” in the present embodiment refers to a phenomenon that causes a failure in grounding stability as described above.

本発明はこのような事情を考慮してなされたもので、その目的は、底落ちの発生を抑えつつ、減圧吸収性能を確保することができるボトルを提供することである。   The present invention has been made in view of such circumstances, and an object of the present invention is to provide a bottle capable of ensuring reduced pressure absorption performance while suppressing the occurrence of bottoming.

上記の目的を達成するために、この発明は以下の手段を提供している。
（１）本発明に係るボトルは、合成樹脂材料で有底筒状に形成されたボトルであって、底部の底壁部が、外周縁部に位置する接地部と、該接地部にボトル径方向の内側から連なり上方に向けて延びる立ち上がり周壁部と、該立ち上がり周壁部の上端部からボトル径方向の内側に向けて突出する環状の可動壁部と、該可動壁部のボトル径方向の内端部から上方に向けて延びる陥没周壁部と、を備え、前記可動壁部が、前記陥没周壁部を上方に向けて移動させるように、前記立ち上がり周壁部との接続部分を中心に回動自在に配設され、前記立ち上がり周壁部が、前記接地部から前記可動壁部との前記接続部分に向かうに従い漸次ボトル径方向の内側に向けて傾斜するように延在すると共に、その傾斜角度がボトル軸に対して１０度以下とされていることを特徴とする。 In order to achieve the above object, the present invention provides the following means.
(1) A bottle according to the present invention is a bottle formed of a synthetic resin material in a bottomed cylindrical shape, wherein a bottom wall portion of the bottom portion is positioned on an outer peripheral edge portion, and a bottle diameter is provided on the grounding portion. A rising peripheral wall portion extending from the inner side in the direction and extending upward; an annular movable wall portion projecting inward from the upper end portion of the rising peripheral wall portion toward the inner side in the bottle radial direction; A depressed peripheral wall portion extending upward from the end portion, and the movable wall portion is rotatable 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 gradually incline inward in the bottle radial direction from the grounding portion toward the connection portion with the movable wall portion, and the inclination angle thereof is 10 degrees or less with respect to the axis And wherein the Rukoto.

本発明に係るボトルによれば、ボトル内の減圧時、可動壁部を立ち上がり周壁部との接続部分を中心に上方に向けて回動させ、陥没周壁部を上方に移動させることができるので、ボトルの減圧吸収容量を高めて所定の減圧吸収性能を確保することができる。
ところで、立ち上がり周壁部は、可動壁部との接続部分に向かうに従い、ボトル軸に対してボトル径方向の内側に傾斜しているが、その傾斜角度は１０度以下とされており、垂直に立ち上がった形に近い状態とされている。そのため、立ち上がり周壁部の上端部側（上記接続部分側）がボトル径方向に容易に動いてしまうことを抑制でき、内容物の充填時等に可動壁部が上記接続部分を中心として下方に回動してしまうことを抑制し易い。これにより、いわゆる底落ちを生じ難くすることができる。 According to the bottle according to the present invention, at the time of decompression in the bottle, the movable wall portion rises and rotates upward around the connection portion with the peripheral wall portion, and the depressed peripheral wall portion can be moved upward, The reduced pressure absorption capacity of the bottle can be increased to ensure a predetermined reduced pressure absorption performance.
By the way, the rising peripheral wall portion is inclined inward in the bottle radial direction with respect to the bottle axis as it goes to the connecting portion with the movable wall portion, but the inclination angle is set to 10 degrees or less and rises vertically. It is in a state close to the shape. For this reason, it is possible to prevent the upper end portion side (the connection portion side) of the rising peripheral wall portion from easily moving in the bottle radial direction, and the movable wall portion rotates downward with the connection portion as a center when filling the contents. It is easy to suppress moving. Thereby, what is called a bottom fall can be made hard to produce.

（２）上記本発明に係るボトルにおいて、前記接地部から前記立ち上がり周壁部と前記可動壁部との前記接続部分までの高さが、７．５ｍｍを超える高さとされていることが好ましい。 (2) In the bottle according to the present invention, it is preferable that a height from the grounding portion to the connection portion between the rising peripheral wall portion and the movable wall portion is higher than 7.5 mm.

この場合には、可動壁部の回動中心となる接続部分が接地部から７．５ｍｍを超える高さに位置しているので、内容物の充填時等に、いわゆる底落ちをより生じ難くさせることができる。そのため、安定した接地性能を確保できると共に、例えば内容物の高温充填にも対応することが可能である。   In this case, since the connecting portion that becomes the rotation center of the movable wall portion is located at a height that exceeds 7.5 mm from the grounding portion, so-called bottom falling is more unlikely to occur when filling the contents. be able to. Therefore, stable grounding performance can be ensured, and for example, it is possible to cope with high temperature filling of contents.

本発明に係るボトルによれば、内容物の充填時や内圧上昇時等における底落ちの発生を抑えつつ、減圧吸収性能を確保することができる。   According to the bottle according to the present invention, it is possible to ensure the reduced pressure absorption performance while suppressing the occurrence of bottoming when filling the contents or increasing the internal pressure.

本発明の実施形態におけるボトルの正面図である。It is a front view of the bottle in the embodiment of the present invention. 図１に示すボトルの底面図である。It is a bottom view of the bottle shown in FIG. 図２に示すＡ−Ａ線に沿ったボトルの横断面図である。It is a cross-sectional view of the bottle along the AA line shown in 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。
（ボトルの構成）
本実施形態に係るボトル１は、図１に示すように、口部１１、肩部１２、胴部１３及び底部１４を備え、これらがそれぞれの中心軸線を共通軸上に位置した状態でこの順に連設された概略構成とされている。 Hereinafter, bottles according to embodiments of the present invention will be described with reference to the drawings.
(Composition of bottle)
As shown in FIG. 1, 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 are arranged in this order in a state where their respective central axes are located on a common axis. It is set as the general | schematic structure connected continuously.

以下、前記共通軸をボトル軸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側を下側という。また、ボトル軸Ｏに直交する方向をボトル径方向といい、ボトル軸Ｏを中心に周回する方向をボトル周方向という。
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螺着される。更に、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されている。 Hereinafter, 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. A direction perpendicular to the bottle axis O is referred to as a bottle radial direction, and a direction around the bottle axis O is referred to as a bottle 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. A cap (not shown) is screwed into the mouth portion 11. Further, the mouth portion 11, the shoulder portion 12, the trunk portion 13, and the bottom portion 14 each have a circular cross-sectional view shape orthogonal to the bottle axis O.

肩部１２と胴部１３との間には、第１環状凹溝１５が全周に亘って連続して形成されている。
胴部１３は筒状に形成されていると共に、肩部１２の下端部及び底部１４の後述するヒール部１７よりも小径に形成されている。また、この胴部１３には、ボトル軸Ｏ方向に間隔を開けて複数の第２環状凹溝１６が形成されている。図示の例では、ボトル軸Ｏ方向に等間隔を開けて第２環状凹溝１６が５つ形成されている。これら各第２環状凹溝１６は、胴部１３の全周に亘って連続して形成された溝部とされている。 Between the shoulder part 12 and the trunk | drum 13, the 1st annular groove 15 is formed continuously over the perimeter.
The body portion 13 is formed in a cylindrical shape and has a smaller diameter than a lower end portion of the shoulder portion 12 and a heel portion 17 described later of the bottom portion 14. A plurality of second annular grooves 16 are formed in the body portion 13 at intervals in the bottle axis O direction. In the illustrated example, five second annular grooves 16 are formed at equal intervals in the bottle axis O direction. Each of these second annular grooves 16 is a groove formed continuously over the entire circumference of the body portion 13.

底部１４は、上端開口部が胴部１３の下端開口部に接続されたヒール部１７と、ヒール部１７の下端開口部を閉塞し、且つ外周縁部が接地部１８とされた底壁部１９と、を備えるカップ状に形成されている。   The bottom portion 14 has a heel portion 17 whose upper end opening is connected to the lower end opening portion of the body portion 13, and a bottom wall portion 19 that closes the lower end opening portion of the heel portion 17 and whose outer peripheral edge portion is a grounding portion 18. Are formed in a cup shape.

ヒール部１７のうち、上記接地部１８にボトル径方向の外側から連なるヒール下端部２７は、該ヒール下端部２７に上方から連なる上ヒール部２８より小径に形成されている。なお、この上ヒール部２８は、肩部１２の下端部と共にボトル１の最大外径部とされている。   Of the heel portion 17, a heel lower end portion 27 connected to the ground contact portion 18 from the outside in the bottle radial direction is formed to have a smaller diameter than an upper heel portion 28 connected to the heel lower end portion 27 from above. The upper heel portion 28 is the maximum outer diameter portion of the bottle 1 together with the lower end portion of the shoulder portion 12.

また、ヒール下端部２７と上ヒール部２８との連結部分２９は、上方から下方に向かうに従い漸次縮径されており、これによりヒール下端部２７が上ヒール部２８より小径とされている。また、上ヒール部２８には、例えば上記第１環状凹溝１５と略同じ深さの複数の第３環状凹溝２０が全周に亘って連続して形成されている。図示の例では、ボトル軸Ｏ方向に間隔を開けて第３環状凹溝２０が２つ形成されている。   Further, the connecting portion 29 between the heel lower end portion 27 and the upper heel portion 28 is gradually reduced in diameter from the upper side toward the lower side, whereby the heel lower end portion 27 has a smaller diameter than the upper heel portion 28. Further, in the upper heel portion 28, for example, a plurality of third annular grooves 20 having substantially the same depth as the first annular grooves 15 are formed continuously over the entire circumference. In the illustrated example, two third annular grooves 20 are formed at an interval in the bottle axis O direction.

底壁部１９は、図２及び図３に示すように、接地部１８にボトル径方向の内側から連なり上方に向けて延びる立ち上がり周壁部２１と、立ち上がり周壁部２１の上端部からボトル径方向の内側に向けて突出する環状の可動壁部２２と、可動壁部２２のボトル径方向の内端部から上方に向けて延びる陥没周壁部２３と、を備えている。   2 and 3, the bottom wall portion 19 is connected to the ground contact portion 18 from the inside in the bottle radial direction and extends upward, and from the upper end portion of the rising peripheral wall portion 21 in the bottle radial direction. An annular movable wall portion 22 projecting inward, and a depressed peripheral wall portion 23 extending upward from the inner end portion of the movable wall portion 22 in the bottle radial direction are provided.

可動壁部２２は、下方に向けて突の曲面状に形成されると共に、ボトル径方向の外側から内側に向かうに従い漸次下方に向けて延在している。この可動壁部２２と立ち上がり周壁部２１とは、上方に向けて突の曲面部２５を介して連結されている。そして、可動壁部２２は、陥没周壁部２３を上方に向けて移動させるように、上記曲面部（立ち上がり周壁部２１との接続部分）２５を中心に回動自在とされている。   The movable wall portion 22 is formed in a curved shape protruding downward, and gradually extends downward from the outside in the bottle 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 around the curved surface portion (connection portion with the rising peripheral wall portion 21) 25 so as to move the depressed peripheral wall portion 23 upward.

立ち上がり周壁部２１は、下方から上方に向かうに従い漸次縮径している。具体的には、接地部１８から可動壁部２２との接続部分である上記曲面部２５に向かうに従い漸次ボトル径方向の内側に向けて傾斜するように延在している。その際、傾斜角度θとしては、ボトル軸Ｏに対して１０°以下とされている。
また、本実施形態では、接地部１８から上記曲面部２５までの高さＴが、７．５ｍｍを超える高さである例えば７．７ｍｍとされている。 The rising peripheral wall portion 21 is gradually reduced in diameter from the lower side toward the upper side. Specifically, it extends so as to incline toward the inner side in the bottle radial direction from the grounding portion 18 toward the curved surface portion 25 which is a connecting portion with the movable wall portion 22. At that time, the inclination angle θ is set to 10 ° or less with respect to the bottle axis O.
In the present embodiment, the height T from the ground contact portion 18 to the curved surface portion 25 is, for example, 7.7 mm, which is a height exceeding 7.5 mm.

陥没周壁部２３は、ボトル軸Ｏと同軸に配設されると共に、上方から下方に向かうに従い漸次拡径する横断面視円形状に形成されている。陥没周壁部２３の上端部には、ボトル軸Ｏと同軸に配置された円板状の頂壁２４が接続されており、陥没周壁部２３及び頂壁２４の全体で有頂筒状をなしている。
この陥没周壁部２３は、ボトル径方向の内側に向けて突の曲面状に形成され、上端部が頂壁２４の外周縁部に連設された湾曲壁部２３ａを備えている。この湾曲壁部２３ａは、その下端部が下方に向けて突の曲面部２６を介して可動壁部２２のボトル径方向の内端部に連設されている。 The depressed peripheral wall portion 23 is disposed coaxially with the bottle axis O, and is formed in a circular shape in a cross-sectional view that gradually increases in diameter from the upper side toward the lower side. A disc-shaped top wall 24 disposed coaxially with the bottle axis O is connected to the upper end portion of the depressed peripheral wall portion 23, and the entire depressed peripheral wall portion 23 and the top wall 24 form a top tube shape. Yes.
The depressed peripheral wall portion 23 includes a curved wall portion 23 a that is formed in a curved shape protruding toward the inside in the bottle radial direction, and whose upper end portion is connected to the outer peripheral edge portion of the top wall 24. The curved wall portion 23a is connected to the inner end portion of the movable wall portion 22 in the bottle radial direction via a curved surface portion 26 having a lower end projecting downward.

（ボトルの作用）
このように構成されたボトル１内が減圧すると、底壁部１９の曲面部２５を中心にして可動壁部２２が上方に向かって回動することで、可動壁部２２は陥没周壁部２３を上方に向けて持ち上げるように移動する。即ち、減圧時にボトル１の底壁部１９を積極的に変形させることで、ボトル１の内圧変化（減圧）を吸収することができる。これにより、所定の減圧吸収性能を確保することができる。 (Bottle action)
When the inside of the bottle 1 configured as described above is depressurized, the movable wall portion 22 rotates upward about the curved surface portion 25 of the bottom wall portion 19, so that the movable wall portion 22 moves to the depressed peripheral wall portion 23. Move to lift upwards. That is, the inner wall pressure change (decompression) of the bottle 1 can be absorbed by positively deforming the bottom wall portion 19 of the bottle 1 during decompression. Thereby, predetermined decompression absorption performance can be secured.

ところで、本実施形態のボトル１では、立ち上がり周壁部２１が曲面部２５に向かうに従いボトル径方向の内側に傾斜しているが、その傾斜角度θはボトル軸Ｏに対して１０度以下とされ、垂直に立ち上がった形に近い状態とされている。そのため、立ち上がり周壁部２１の上端部側（曲面部２５側）がボトル径方向に容易に動いてしまうことを抑制でき、内容物の充填時や内圧上昇時に、可動壁部２２が曲面部２５を中心として下方に回動してしまうことを抑制し易い。つまり、立ち上がり周壁部２１がボトル径方向の内側に倒れ込むように変形することが抑制され、これにより、いわゆる底落ちを生じ難くすることができる。   By the way, in the bottle 1 of the present embodiment, the rising peripheral wall portion 21 is inclined inward in the bottle radial direction toward the curved surface portion 25, but the inclination angle θ is 10 degrees or less with respect to the bottle axis O, It is in a state close to a vertically rising shape. Therefore, it can suppress that the upper end part side (curved-surface part 25 side) of the standup | rising surrounding wall part 21 moves easily in a bottle radial direction, and the movable wall part 22 makes the curved-surface part 25 into the time of the filling of the content or an internal pressure rise. It is easy to suppress the downward rotation about the center. That is, it is possible to suppress the rising peripheral wall portion 21 from being deformed so as to fall inward in the bottle radial direction, thereby making it difficult to cause a so-called bottom drop.

しかも、可動壁部２２の回動中心となる曲面部２５は、接地部１８から７．７ｍｍ上方に位置する高さに配設されているので、可動壁部２２が多少下方に回動したとしても、底落ちの発生を防止し易い。そのため、安定した接地性能を確保できると共に、例えば内容物の高温充填（例えば、８０〜１００℃、好ましくは８５〜９３℃）にも対応することができる。   Moreover, since the curved surface portion 25 that is the rotation center of the movable wall portion 22 is disposed at a height that is 7.7 mm above the grounding portion 18, it is assumed that the movable wall portion 22 has rotated slightly downward. However, it is easy to prevent the occurrence of bottoming out. Therefore, stable grounding performance can be ensured, and for example, it is possible to cope with high-temperature filling of the contents (for example, 80 to 100 ° C., preferably 85 to 93 ° C.).

また、本実施形態のボトル１は、内容量が１リットル以下、接地径が８５ｍｍ以下とされるボトルに好適である。図示の例では、接地径が７０ｍｍ、接地部１８からの曲面部２５の高さＴが７．７ｍｍとされたボトルとされている。   Moreover, the bottle 1 of this embodiment is suitable for a bottle having an internal volume of 1 liter or less and a grounding diameter of 85 mm or less. In the illustrated example, the bottle has a grounding diameter of 70 mm and a height T of the curved surface portion 25 from the grounding portion 18 of 7.7 mm.

なお、本発明の技術範囲は、上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において、種々の変更を加えることが可能である。   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.

例えば、立ち上がり周壁部２１の傾斜角度θとしては、１０度以下であれば良いが、より好ましくは３度以下である。   For example, the inclination angle θ of the rising peripheral wall portion 21 may be 10 degrees or less, more preferably 3 degrees or less.

また、可動壁部２２をボトル径方向に沿って平行に突出させたり、上方に傾斜させたりする等、適宜変更しても良いし、平面状若しくは上方に向けて窪む凹曲面状に形成する等、適宜変更しても良い。
更には、可動壁部２２を、曲面部２５からボトル径方向の内側に向かいに従い漸次下方に向けて延びる外側壁部と、該外側壁部と陥没周壁部とを接続し、且つ上方に向けて窪む凹曲面状に形成された内側壁部と、で構成しても構わない。こうすることで、例えば内容物の充填時に、可動壁部２２の内側壁部が下方により到達し難くなるので、いわゆる底落ちの発生を効果的に抑制し易い。 Further, the movable wall portion 22 may be appropriately changed such as projecting in parallel along the bottle radial direction, or inclined upward, or may be formed in a planar shape or a concave curved shape that is recessed upward. Etc., may be changed as appropriate.
Furthermore, the movable wall portion 22 is connected to the outer wall portion extending gradually downward from the curved surface portion 25 toward the inner side in the bottle radial direction, and the outer wall portion and the depressed peripheral wall portion are connected to each other and upward. You may comprise by the inner wall part formed in the concave curved surface shape which becomes depressed. By doing so, for example, when filling the contents, the inner wall portion of the movable wall portion 22 is less likely to reach the lower side, so that it is easy to effectively suppress the occurrence of so-called bottoming.

また、上記実施形態では、肩部１２、胴部１３及び底部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良い。   Moreover, in the said embodiment, although the cross-sectional view shape orthogonal to each bottle axis | shaft O of the shoulder part 12, the trunk | drum 13, and the bottom part 14 was made into circular shape, it does not restrict to this, for example, changes suitably, such as polygonal shape You may do it.

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、適宜変更しても良い。更に、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良い。なお、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 absorption property.

（実施例）
次に、立ち上がり周壁部２１の傾斜角度θの違いによって、内容物の充填時に該立ち上がり周壁部２１の上端部がボトル径方向にどのように変化するかを試験（解析）した実施例について説明する。 (Example)
Next, a description will be given of an embodiment in which how the upper end portion of the rising peripheral wall portion 21 changes in the bottle radial direction when the contents are filled due to the difference in the inclination angle θ of the rising peripheral wall portion 21 will be described. .

本試験では、実施例として下記の４パターン、その比較例として下記の４パターン、合計８つのパターンについてそれぞれ試験を行った。なお、接地面から曲面部２５の最上部までの高さ（空ボトル時）を７．７ｍｍとしている。
実施例としては、立ち上がり周壁部２１の傾斜角度θとして、１．５度、３度、４．５度、９度の４つのパターンを採用した。これに対して、比較例としては、立ち上がり周壁部２１の傾斜角度θとして、１２度、１５度、２０度、３０度の４つのパターンを採用した。 In this test, the following four patterns as examples and the following four patterns as comparative examples were tested, respectively, for a total of eight patterns. In addition, the height (at the time of an empty bottle) from the grounding surface to the uppermost part of the curved surface part 25 is 7.7 mm.
As an example, four patterns of 1.5 degrees, 3 degrees, 4.5 degrees, and 9 degrees were employed as the inclination angle θ of the rising peripheral wall portion 21. On the other hand, as a comparative example, four patterns of 12 degrees, 15 degrees, 20 degrees, and 30 degrees were employed as the inclination angle θ of the rising peripheral wall portion 21.

そして、上記した合計８つのパターンの立ち上がり周壁部２１を具備するボトル１内に、内容物の充填を想定して所定の内圧（０．５ｋｇ／ｃｍ２（４９ＫＰａ））を加えた。すると、いずれのボトル１も、可動壁部２２が曲面部２５を中心として下方に回動し、且つ立ち上がり周壁部２１の上端部がボトル径方向の内側に向けて倒れ込むように変形した。つまり、いずれの場合も、立ち上がり周壁部２１は傾斜角度θが増大するように変形した。 Then, a predetermined internal pressure (0.5 kg / cm 2 (49 KPa)) was applied to the bottle 1 having the rising peripheral wall portions 21 having a total of eight patterns as described above, assuming the filling of the contents. Then, each bottle 1 was deformed so that the movable wall portion 22 pivoted downward about the curved surface portion 25, and the upper end portion of the rising peripheral wall portion 21 fell down toward the inside in the bottle radial direction. That is, in any case, the rising peripheral wall portion 21 was deformed so that the inclination angle θ increased.

具体的には、実施例の４パターンにおいて、傾斜角度θが１．５度の場合には４．７度（変化量３．２度）に増大し、傾斜角度θが３度の場合には６．２度（変化量３．２度）に増大し、傾斜角度θが４．５度の場合には７．８度（変化量３．３度）に増大し、傾斜角度θが９度の場合には１２．３度（変化量３．３度）に増大した。   Specifically, in the four patterns of the embodiment, when the inclination angle θ is 1.5 degrees, the angle increases to 4.7 degrees (change amount 3.2 degrees), and when the inclination angle θ is 3 degrees. It increases to 6.2 degrees (change amount: 3.2 degrees), and when the tilt angle θ is 4.5 degrees, it increases to 7.8 degrees (change amount: 3.3 degrees), and the tilt angle θ is 9 degrees. In the case of, it increased to 12.3 degrees (change amount 3.3 degrees).

これに対して、比較例の４パターンにおいて、傾斜角度θが１２度の場合には１５．４度（変化量３．４度）に増大し、傾斜角度θが１５度の場合には１８．５度（変化量３．５度）に増大し、傾斜角度θが２０度の場合には２３．７度（変化量３．７度）に増大し、傾斜角度θが３０度の場合には３４度（変化量４度）に増大した。   On the other hand, in the four patterns of the comparative example, when the inclination angle θ is 12 degrees, it increases to 15.4 degrees (change amount 3.4 degrees), and when the inclination angle θ is 15 degrees, 18. It increases to 5 degrees (change amount 3.5 degrees), increases to 23.7 degrees (change amount 3.7 degrees) when the tilt angle θ is 20 degrees, and increases to 30 degrees when the tilt angle θ is 30 degrees. It increased to 34 degrees (change amount 4 degrees).

これらの結果から、立ち上がり周壁部２１の傾斜角度θが大きいほど、内容物の充填時に、その上端部がボトル径方向の内側に倒れ込むように移動し易く、それにより可動壁部２２の一部が接地部１８に対して接近し易くなること、即ち底落ちが生じ易くなることが確認できた。
しかしながら、上記した実施例の４パターンのいずれにおいても、確実に底落ちが発生しないことが確認できた。これにより、立ち上がり周壁部２１の傾斜角度θをボトル軸Ｏに対して１０度以下にすることで、底落ちの発生を抑制できることが実際に確認できた。 From these results, as the inclination angle θ of the rising peripheral wall portion 21 increases, the upper end portion of the rising peripheral wall portion 21 easily moves so as to fall inward in the bottle radial direction when the contents are filled. It has been confirmed that it is easy to approach the grounding portion 18, that is, the bottom falls easily.
However, in any of the four patterns of the above-described example, it was confirmed that no bottoming occurred reliably. Thus, it was actually confirmed that the occurrence of bottoming out can be suppressed by setting the inclination angle θ of the rising peripheral wall portion 21 to 10 degrees or less with respect to the bottle axis O.

Ｏ…ボトル軸
Ｔ…接地部から曲面部までの高さ
θ…立ち上がり周壁部の傾斜角度
１…ボトル
１４…底部
１８…接地部
１９…底部の底壁部
２１…立ち上がり周壁部
２２…可動壁部
２３…陥没周壁部
２５…曲面部（可動壁部と立ち上がり周壁部との接続部分） O: Bottle shaft T: Height from the ground contact part to the curved surface part θ: Inclination angle of the rising peripheral wall part 1 ... Bottle 14 ... Bottom part 18 ... Grounding part 19 ... Bottom wall part at the bottom part 21 ... Rising peripheral wall part 22 ... Movable wall part 23 ... Depressed peripheral wall portion 25 ... Curved surface portion (connection portion between movable wall portion and rising peripheral wall portion)

Claims (2)

合成樹脂材料で有底筒状に形成されたボトルであって、
底部の底壁部は、
外周縁部に位置する接地部と、
該接地部にボトル径方向の内側から連なり上方に向けて延びる立ち上がり周壁部と、
該立ち上がり周壁部の上端部からボトル径方向の内側に向けて突出する環状の可動壁部と、
該可動壁部のボトル径方向の内端部から上方に向けて延びる陥没周壁部と、を備え、
前記可動壁部は、前記陥没周壁部を上方に向けて移動させるように、前記立ち上がり周壁部との接続部分を中心に回動自在に配設され、
前記立ち上がり周壁部は、前記接地部から前記可動壁部との前記接続部分に向かうに従い漸次ボトル径方向の内側に向けて傾斜するように延在すると共に、その傾斜角度がボトル軸に対して１０度以下とされていることを特徴とするボトル。 A bottle formed of a synthetic resin material in a bottomed cylindrical shape,
The bottom wall of the bottom
A grounding portion located at the outer periphery,
A rising peripheral wall portion extending from the inside in the bottle radial direction to the grounding portion and extending upward;
An annular movable wall portion projecting inward from the upper end portion of the rising peripheral wall portion in the bottle radial direction;
A depressed peripheral wall portion extending upward from an inner end portion in the bottle radial direction of the movable wall portion,
The movable wall portion is rotatably arranged around a connection 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 inclined inward in the bottle radial direction from the grounding portion toward the connection portion with the movable wall portion, and the inclination angle is 10 with respect to the bottle axis. Bottle characterized by being less than or equal to the degree. 請求項１に記載のボトルにおいて、
前記接地部から前記立ち上がり周壁部と前記可動壁部との前記接続部分までの高さが、７．５ｍｍを超える高さとされていることを特徴とするボトル。 The bottle according to claim 1,
A bottle characterized in that a height from the grounding portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is higher than 7.5 mm.
JP2011163103A 2011-07-26 2011-07-26 Bottle Pending JP2013023278A (en)

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JP2011163103A JP2013023278A (en) 2011-07-26 2011-07-26 Bottle
TW101126672A TWI603893B (en) 2011-07-26 2012-07-24 Bottle
PCT/JP2012/068822 WO2013015312A1 (en) 2011-07-26 2012-07-25 Bottle
EP12817631.0A EP2738107B1 (en) 2011-07-26 2012-07-25 Bottle
CA2841101A CA2841101C (en) 2011-07-26 2012-07-25 Bottle
KR1020137027405A KR101894448B1 (en) 2011-07-26 2012-07-25 Bottle
AU2012287900A AU2012287900B2 (en) 2011-07-26 2012-07-25 Bottle
US14/131,595 US8998026B2 (en) 2011-07-26 2012-07-25 Bottle formed of synthetic resin material into cylindrical shape with bottom
CN201280019689.1A CN103492273B (en) 2011-07-26 2012-07-25 Bottle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10597213B2 (en) 2017-03-27 2020-03-24 Yoshino Kogyosho Co., Ltd. Pressure reduction-absorbing bottle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0747293Y2 (en) * 1990-01-19 1995-11-01 株式会社吉野工業所 Bottom structure of resin container
JP2008539141A (en) * 2005-04-28 2008-11-13 アムコー リミテッド Vessel bottom structure that reacts to vacuum related forces
JP2012111546A (en) * 2010-11-26 2012-06-14 Yoshino Kogyosho Co Ltd Bottle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0747293Y2 (en) * 1990-01-19 1995-11-01 株式会社吉野工業所 Bottom structure of resin container
JP2008539141A (en) * 2005-04-28 2008-11-13 アムコー リミテッド Vessel bottom structure that reacts to vacuum related forces
JP2012111546A (en) * 2010-11-26 2012-06-14 Yoshino Kogyosho Co Ltd Bottle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10597213B2 (en) 2017-03-27 2020-03-24 Yoshino Kogyosho Co., Ltd. Pressure reduction-absorbing bottle

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