JP7270345B2 - Bottle - Google Patents

Bottle Download PDF

Info

Publication number
JP7270345B2
JP7270345B2 JP2018123816A JP2018123816A JP7270345B2 JP 7270345 B2 JP7270345 B2 JP 7270345B2 JP 2018123816 A JP2018123816 A JP 2018123816A JP 2018123816 A JP2018123816 A JP 2018123816A JP 7270345 B2 JP7270345 B2 JP 7270345B2
Authority
JP
Japan
Prior art keywords
vertical direction
bottle
panel surface
recess
vertical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2018123816A
Other languages
Japanese (ja)
Other versions
JP2020001761A (en
Inventor
修一 木虎
啓太 田中
幸治 吉井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yoshino Kogyosho Co Ltd
Original Assignee
Yoshino Kogyosho Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yoshino Kogyosho Co Ltd filed Critical Yoshino Kogyosho Co Ltd
Priority to JP2018123816A priority Critical patent/JP7270345B2/en
Publication of JP2020001761A publication Critical patent/JP2020001761A/en
Application granted granted Critical
Publication of JP7270345B2 publication Critical patent/JP7270345B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Containers Having Bodies Formed In One Piece (AREA)

Description

本発明は、ボトルに関するものである。 The present invention relates to bottles.

従来から、例えば下記特許文献1に示されるように、口部、肩部、胴部、および底部が、ボトル軸方向に沿って上方から下方に向けてこの順に連設され、胴部が、複数のパネル面部がボトル軸回りの周方向に連設されてなる構成のボトルが知られている。 Conventionally, as shown in Patent Document 1 below, for example, a mouth portion, a shoulder portion, a body portion, and a bottom portion are continuously arranged in this order from top to bottom along the axial direction of the bottle. There is known a bottle having a configuration in which panel surface portions of are continuously arranged in the circumferential direction around the bottle axis.

特開2009-286437号公報JP 2009-286437 A

しかしながら、従来では、例えば、複数本のボトルが収容されたカートンケースが、段積みされた状態で保管されるなど、ボトルに上下方向の圧縮荷重が継続して加えられたときに、胴部が膨出変形する、つまり胴部がクリープ変形するおそれがあった。
特に、ボトルの軽量化のために胴部を薄肉にすると、胴部にクリープ変形が生じやすくなる。
However, conventionally, when a vertical compressive load is continuously applied to the bottles, for example, when a carton case containing a plurality of bottles is stored in a stacked state, the body of the bottle breaks down. There is a risk of bulging deformation, that is, creep deformation of the body.
In particular, if the body is made thin in order to reduce the weight of the bottle, creep deformation is likely to occur in the body.

本発明は、このような事情を考慮してなされたもので、胴部を薄肉にしても、胴部にクリープ変形が生ずるのを抑えることができるボトルを提供することを目的とする。 SUMMARY OF THE INVENTION It is an object of the present invention to provide a bottle capable of suppressing creep deformation of the body even when the body is made thin.

上記課題を解決して、このような目的を達成するために、本発明のボトルは、口部、肩部、胴部、および底部が、ボトル軸方向に沿って上方から下方に向けてこの順に連設され、前記肩部は、上方に向かうに従い漸次、縮径し、前記肩部の上下方向の長さは、前記胴部の上下方向の長さの半分より長く、前記胴部は、複数のパネル面部がボトル軸回りの周方向に連設された構成とされ、前記パネル面部に、その中央部を上下方向に跨いで配設された補強凹部が形成され、前記補強凹部は、このボトルに上下方向の圧縮荷重が継続して加えられたときに、前記胴部が膨出変形する起点となる、前記パネル面部の中央部を補強し、前記パネル面部における前記補強凹部の開口周縁部の周方向の両端部は、上下方向に延びる直線部となっており、前記パネル面部における前記補強凹部の開口周縁部は、一対の前記直線部と、一対の前記直線部における上下方向の端部同士を周方向に連結し、上下方向の外側に向けて突となるように湾曲した曲線部と、により構成され、ボトル軸に直交する横断面視において、前記補強凹部は、上下方向の全長にわたって、径方向の内側に向けて窪む凹曲線状を呈し、上下方向に沿う縦断面視において、前記補強凹部のうち、一対の前記直線部同士の間に位置する部分より上下方向の外側に位置し、前記曲線部で囲まれた部分の深さは、上下方向の外側に向かうに従い漸次、浅くなっており、前記補強凹部の中央部の窪み量は、0.5mm以上0.9mm未満となっているIn order to solve the above problems and achieve such objects, the bottle of the present invention has a mouth portion, a shoulder portion, a body portion, and a bottom portion which are arranged in this order from top to bottom along the axial direction of the bottle. The shoulder portion gradually decreases in diameter as it goes upward, the length of the shoulder portion in the vertical direction is longer than half the length of the body portion in the vertical direction, and the body portion has a plurality of shoulder portions. The panel surface portion is continuously provided in the circumferential direction around the bottle axis, and a reinforcing recess is formed in the panel surface portion so as to straddle the central portion in the vertical direction. When a vertical compressive load is continuously applied to the body, the central portion of the panel surface portion, which is the starting point of swelling deformation of the body portion, is reinforced, and the opening peripheral portion of the reinforcing recess in the panel surface portion is reinforced. Both ends in the circumferential direction are linear portions extending in the vertical direction, and the opening peripheral edge portion of the reinforcing recess in the panel surface portion is formed between the pair of linear portions and the vertical ends of the pair of linear portions. and a curved portion that is curved so as to protrude outward in the vertical direction. It has a concave curved shape that is concave inward in the radial direction, and is located outside in the vertical direction of the portion of the reinforcing recess that is located between the pair of straight portions in a longitudinal cross-sectional view along the vertical direction. , the depth of the portion surrounded by the curved portion gradually becomes shallower toward the outer side in the vertical direction, and the amount of depression in the central portion of the reinforcing recess is 0.5 mm or more and less than 0.9 mm. there is

この発明によれば、パネル面部に、その中央部を上下方向に跨いで配設された補強凹部が形成されているので、ボトルに上下方向の圧縮荷重が継続して加えられたときに、胴部が膨出変形する起点となる、つまり胴部のクリープ変形の起点となる、パネル面部の中央部を補強することが可能になり、胴部のクリープ変形を抑制することができる。
また、パネル面部における補強凹部の開口周縁部の周方向の両端部が、上下方向に延びる直線部となっているので、パネル面部における周方向の端縁と、補強凹部と、の間に、上下方向に延びる平滑な柱部が画成されることとなり、胴部がクリープ変形することだけでなく、座屈変形することも抑制することができる。
以上より、胴部を薄肉にしても、座屈強度の低下を抑えつつ、胴部にクリープ変形が生ずるのを抑えることができる。
According to this invention, since the reinforcing recess is formed in the panel surface portion so as to straddle the central portion in the vertical direction, when a compressive load in the vertical direction is continuously applied to the bottle, the body is It is possible to reinforce the central portion of the panel surface portion, which is the starting point for swelling deformation of the body portion, that is, the starting point for creep deformation of the body portion, thereby suppressing creep deformation of the body portion.
In addition, since both circumferential ends of the peripheral edge of the opening of the reinforcement recess in the panel surface portion are linear portions extending in the vertical direction, there is a vertical gap between the circumferential edge of the panel surface portion and the reinforcement recess. Since a smooth columnar portion extending in the direction is defined, it is possible to suppress not only creep deformation but also buckling deformation of the trunk portion.
As described above, even if the thickness of the trunk portion is reduced, it is possible to suppress the occurrence of creep deformation in the trunk portion while suppressing a decrease in buckling strength.

ここで、前記パネル面部における前記補強凹部の開口周縁部は、一対の前記直線部と、一対の前記直線部における上下方向の端部同士を周方向に連結し、上下方向の外側に向けて突となるように湾曲した曲線部と、により構成されてもよい。 Here, the peripheral edge of the opening of the reinforcing recess in the panel surface part connects the pair of linear parts and the vertical ends of the pair of linear parts in the circumferential direction, and protrudes outward in the vertical direction. It may be configured by a curved portion that is curved so as to be.

この場合、パネル面部における補強凹部の開口周縁部が、一対の直線部における上下方向の端部同士を周方向に連結し、上下方向の外側に向けて突となるように湾曲した曲線部を備えるので、パネル面部に補強凹部を形成したことで、パネル面部に応力集中箇所が生ずるのを抑制することが可能になり、前述した胴部のクリープ変形を効果的に抑制することができる。 In this case, the peripheral edge of the opening of the reinforcing recess in the panel surface portion has a curved portion that connects the vertical ends of the pair of straight portions in the circumferential direction and that curves outward in the vertical direction. Therefore, by forming the reinforcing recesses in the panel surface portion, it is possible to suppress the occurrence of stress concentration points in the panel surface portion, thereby effectively suppressing the above-described creep deformation of the body portion.

また、上下方向に沿う縦断面視において、前記補強凹部のうち、一対の前記直線部同士の間に位置する部分の深さは、上下方向の全長にわたって同等され、一対の前記直線部同士の間に位置する部分より上下方向の外側に位置し、前記曲線部で囲まれた部分の深さは、上下方向の外側に向かうに従い漸次、浅くなってもよい。 In addition, in a vertical cross-sectional view along the vertical direction, the depth of the portion of the reinforcing recess located between the pair of straight portions is the same over the entire length in the vertical direction, and the depth between the pair of straight portions is the same. The depth of the portion surrounded by the curved portion may be gradually shallower toward the outer side in the vertical direction.

この場合、前記縦断面視において、補強凹部のうち、一対の直線部同士の間に位置する部分(以下、平坦部という)の深さが、上下方向の全長にわたって同等になっているので、パネル面部に補強凹部を形成したことによる座屈強度の低下を防ぐことができる。
また、前記縦断面視において、補強凹部のうち、前記平坦部より上下方向の外側に位置し、曲線部で囲まれた部分の深さが、上下方向の外側に向かうに従い漸次、浅くなっているので、ボトルに上下方向の圧縮荷重が継続して加えられたときに、補強凹部の内面を偏り少なく変形させやすくなり、補強凹部の内面に応力集中箇所が生ずるのを抑制することができる。
In this case, in the vertical cross-sectional view, the depth of the portion of the reinforcing recess located between the pair of straight portions (hereinafter referred to as the flat portion) is the same over the entire length in the vertical direction. It is possible to prevent a decrease in buckling strength due to the formation of the reinforcing recess in the face portion.
Further, in the vertical cross-sectional view, the depth of the portion of the reinforcing recess that is located outside the flat portion in the vertical direction and surrounded by the curved portion gradually becomes shallower toward the outside in the vertical direction. Therefore, when a vertical compressive load is continuously applied to the bottle, the inner surface of the reinforcing recess can be easily deformed with little bias, and the occurrence of stress concentration points on the inner surface of the reinforcing recess can be suppressed.

また、前記パネル面部の中央部の肉厚は、0.6mm以上0.8mm以下となってもよい。 Further, the thickness of the central portion of the panel surface portion may be 0.6 mm or more and 0.8 mm or less.

この場合、パネル面部の中央部の肉厚が、0.6mm以上0.8mm以下となっているので、ボトルの軽量化を図ることができる。そして、前述したように、パネル面部に補強凹部が形成されていることから、ボトルに上下方向の圧縮荷重が継続して加えられたときに、胴部がクリープ変形するのを抑制することができる。
以上より、胴部のクリープ変形を抑制しつつ、ボトルの軽量化を図ることができる。
In this case, the thickness of the central portion of the panel surface portion is 0.6 mm or more and 0.8 mm or less, so that the weight of the bottle can be reduced. Further, as described above, since the reinforcing recess is formed in the panel surface portion, creep deformation of the body portion can be suppressed when a vertical compressive load is continuously applied to the bottle. .
As described above, it is possible to reduce the weight of the bottle while suppressing the creep deformation of the body.

また、前記補強凹部の中央部の窪み量は、0.5mm以上0.9mm未満となってもよい。 Further, the recess amount of the central portion of the reinforcing recess may be 0.5 mm or more and less than 0.9 mm.

この場合、補強凹部の中央部の窪み量が、0.5mm以上0.9mm未満となっているので、ボトルに上下方向の圧縮荷重が継続して加えられたときに、胴部がクリープ変形するのを、座屈強度を確保しつつ抑制することができる。
補強凹部の中央部の窪み量が、0.5mm未満になると、前述した胴部のクリープ変形を抑えることが困難になり、0.9mm以上になると、座屈強度が低下するおそれがある。
In this case, since the amount of depression in the central portion of the reinforcing recess is 0.5 mm or more and less than 0.9 mm, the barrel creeps when a vertical compressive load is continuously applied to the bottle. can be suppressed while ensuring the buckling strength.
If the amount of depression in the central portion of the reinforcing recess is less than 0.5 mm, it will be difficult to suppress the above-described creep deformation of the body, and if it is 0.9 mm or more, the buckling strength may decrease.

本発明によれば、ボトルに上下方向の圧縮荷重が継続して加えられても、胴部がクリープ変形するのを抑制することができる。 ADVANTAGE OF THE INVENTION According to this invention, even if the compression load of an up-down direction is continuously applied to a bottle, it can suppress that a body part creep-deforms.

本発明に係る一実施形態として示したボトルの側面図である。1 is a side view of a bottle, shown as one embodiment of the present invention; FIG. 図1に示すボトルのII-II線矢視断面図である。FIG. 2 is a cross-sectional view of the bottle shown in FIG. 1 taken along line II-II. 図1に示すボトルのIII-III線矢視断面図である。FIG. 2 is a cross-sectional view of the bottle shown in FIG. 1 taken along line III-III.

以下、図面を参照し、本発明の一実施形態に係るボトル1について説明する。
ボトル1は、図1に示されるように、口部11、肩部12、胴部13、および底部14が、ボトル軸O方向に沿って上方から下方に向けてこの順に連設されて構成されている。
以下、上下方向から見て、ボトル軸Oに交差する方向を径方向といい、ボトル軸O回りに周回する方向を周方向という。
A bottle 1 according to an embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the bottle 1 is constructed by connecting a mouth portion 11, a shoulder portion 12, a body portion 13, and a bottom portion 14 in this order from top to bottom along the direction of the bottle axis O. ing.
Hereinafter, when viewed from above and below, the direction intersecting the bottle axis O is referred to as the radial direction, and the direction rotating around the bottle axis O is referred to as the circumferential direction.

ボトル1は、例えば、内層側の高密度ポリエチレン(HDPE)と、中間層のエチレンビニルアルコール共重合体樹脂(EVOH)と、外層側のポリプロピレン(PP)と、が積層された積層体となっている。ボトル1の内容量は、1500ml以下、好ましくは300ml以上1000ml以下となっている。図示の例では、ボトル1の内容量は、例えば約500mlとなっている。ボトル1は、例えば、押出成形などによって二重(内外)に組み合わされた積層パリソンを形成し、この積層パリソンをブロー成形することで形成される(押出ブロー成形)。
なお、ボトル1は、単層構造であってもよく、また、射出成形により形成したプリフォームを二軸延伸ブロー成形して形成してもよい。
The bottle 1 is a laminate in which, for example, an inner layer of high density polyethylene (HDPE), an intermediate layer of ethylene vinyl alcohol copolymer resin (EVOH), and an outer layer of polypropylene (PP) are laminated. there is The content of the bottle 1 is 1500 ml or less, preferably 300 ml or more and 1000 ml or less. In the illustrated example, the content of the bottle 1 is, for example, approximately 500 ml. The bottle 1 is formed, for example, by forming a double layered parison (inside and outside) by extrusion molding or the like, and blow-molding the layered parison (extrusion blow molding).
The bottle 1 may have a single-layer structure, or may be formed by biaxially stretching and blow-molding a preform formed by injection molding.

肩部12は、上方に向かうに従い漸次、縮径している。胴部13の直径は、上下方向の全長にわたって同等になっている。肩部12の上下方向の長さは、胴部13の上下方向の長さの半分より長くなっている。図示の例では、肩部12の上下方向の長さは、胴部13の上下方向の長さの9割程度となっている。
底部14は扁平な有底円筒状に形成されている。底部14の底壁部の外周縁部は、全周にわたって連続して延びる環状の接地部14aとなっており、このボトル1は自立可能に形成されている。底部14の上端部と胴部13の下端部との接続部分に、全周にわたって連続して延びる周溝23が形成されている。
The shoulder portion 12 gradually decreases in diameter as it goes upward. The diameter of the trunk portion 13 is uniform over the entire length in the vertical direction. The length of the shoulder portion 12 in the vertical direction is longer than half the length of the body portion 13 in the vertical direction. In the illustrated example, the length of the shoulder portion 12 in the vertical direction is about 90% of the length of the body portion 13 in the vertical direction.
The bottom portion 14 is formed in a flat cylindrical shape with a bottom. The outer peripheral edge of the bottom wall portion of the bottom portion 14 forms an annular grounding portion 14a extending continuously over the entire circumference, and the bottle 1 is formed so as to be able to stand on its own. A circumferential groove 23 extending continuously over the entire circumference is formed in the connecting portion between the upper end portion of the bottom portion 14 and the lower end portion of the body portion 13 .

図1および図2に示されるように、胴部13は、複数のパネル面部15が周方向に連設されて構成されている。図示の例では、胴部13は、6つのパネル面部15が周方向に連設されて構成されている。複数のパネル面部15は、区画稜線部16を介して周方向に連設されている。複数のパネル面部15は、互いに同じ形状で同じ大きさに形成されている。パネル面部15は、径方向の外側から見た平面視で、上下方向に長い長方形状を呈する。 As shown in FIGS. 1 and 2, the body portion 13 is configured by a plurality of panel surface portions 15 arranged in series in the circumferential direction. In the illustrated example, the body portion 13 is configured by connecting six panel surface portions 15 in the circumferential direction. The plurality of panel surface portions 15 are connected in the circumferential direction via the division ridgeline portions 16 . The plurality of panel surface portions 15 are formed to have the same shape and size. The panel surface portion 15 has a vertically elongated rectangular shape when viewed from the outside in the radial direction.

肩部12も胴部13と同様に、複数のパネル面部24が周方向に連設された構成とされている。肩部12のパネル面部24は、径方向の外側から見た平面視で、上下方向に長い台形状を呈する。肩部12のパネル面部24の下端縁、および胴部13のパネル面部15の上端縁それぞれの周方向の長さは互いに同等になっている。胴部13および肩部12の各パネル面部15、24は、上下方向に段差なく連なっている。
なお、肩部12として、パネル面部24を有さず、全域にわたって平滑面に形成された構成を採用してもよい。
As with the body portion 13, the shoulder portion 12 also has a structure in which a plurality of panel surface portions 24 are continuously provided in the circumferential direction. The panel surface portion 24 of the shoulder portion 12 has a trapezoidal shape elongated in the vertical direction when viewed from the outside in the radial direction. The lengths in the circumferential direction of the lower edge of the panel surface portion 24 of the shoulder portion 12 and the upper edge of the panel surface portion 15 of the body portion 13 are equal to each other. The panel surface portions 15 and 24 of the body portion 13 and the shoulder portion 12 are continuous in the vertical direction without steps.
Alternatively, the shoulder portion 12 may have a smooth surface over the entire area without the panel surface portion 24 .

胴部13のパネル面部15の中央部の肉厚は、0.6mm以上0.8mm以下となっている。胴部13のパネル面部15の中央部の肉厚は、口部11の肉厚の0.3倍以上0.4倍以下となっている。
ここで、胴部13の平均肉厚は、例えば約0.7mmとされ、現行のボトルの胴部と比べて薄く、口部11、肩部12および底部14の各平均肉厚は、現行のボトルにおける口部、肩部、および底部と同等になっている。ボトルの軽量化を図るために、口部を薄肉にすると、例えばキャッピング時に口部が変形してシール性を確保することが困難になり、また、底部を薄肉にすると、接地部が変形して接地安定性が阻害されたり、ピンチオフ部を精度よく形成することが困難になったりするなどのおそれがある。
The central portion of the panel surface portion 15 of the trunk portion 13 has a thickness of 0.6 mm or more and 0.8 mm or less. The thickness of the central portion of the panel surface portion 15 of the body portion 13 is 0.3 times or more and 0.4 times or less the thickness of the mouth portion 11 .
Here, the average thickness of the body portion 13 is, for example, about 0.7 mm, which is thinner than the body portion of the current bottle. It is equivalent to the mouth, shoulder and bottom of a bottle. If the mouth portion is made thin to reduce the weight of the bottle, for example, the mouth portion will be deformed during capping, making it difficult to ensure sealing performance. There is a possibility that grounding stability may be hindered, or it may become difficult to form the pinch-off portion with high accuracy.

そして、本実施形態では、胴部13のパネル面部15に、その中央部を上下方向に跨いで配設された補強凹部17が形成されている。補強凹部17は、径方向の外側から見た平面視で、上下方向に長い長方形状を呈する。 In this embodiment, a reinforcing recess 17 is formed in the panel surface portion 15 of the trunk portion 13 so as to straddle the center portion in the vertical direction. The reinforcing recess 17 has a vertically elongated rectangular shape when viewed from the outside in the radial direction.

胴部13のパネル面部15における補強凹部17の開口周縁部は、その周方向の両端部を構成し上下方向に延びる一対の直線部18と、一対の直線部18における上下方向の端部同士を周方向に連結し、上下方向の外側に向けて突となるように湾曲した曲線部19と、により構成されている。
なお、曲線部19に代えて、例えば周方向に延びる直線部を採用し、胴部13のパネル面部15における補強凹部17の開口周縁部が、4つの直線部からなる構成を採用してもよい。
The peripheral edge of the opening of the reinforcing recess 17 in the panel surface 15 of the body 13 is defined by a pair of straight portions 18 extending in the vertical direction and forming both ends in the circumferential direction, and the ends of the pair of straight portions 18 in the vertical direction. A curved portion 19 that is connected in the circumferential direction and curved to protrude outward in the vertical direction.
Instead of the curved portion 19, for example, a linear portion extending in the circumferential direction may be adopted, and a configuration in which the opening peripheral portion of the reinforcing recess 17 in the panel surface portion 15 of the body portion 13 is composed of four linear portions may be adopted. .

一対の直線部18はそれぞれ、パネル面部15における周方向の中央部から、周方向に等間隔をあけて配置されている。一対の直線部18それぞれの上下方向の位置は、互いに同等とされ、一対の直線部18の長さは互いに同等になっている。
径方向の外側から見た平面視で、上下一対の曲線部19の曲率半径は、互いに同等になっている。
The pair of linear portions 18 are arranged at regular intervals in the circumferential direction from the central portion of the panel surface portion 15 in the circumferential direction. The vertical positions of the pair of linear portions 18 are equal to each other, and the lengths of the pair of linear portions 18 are equal to each other.
The curvature radii of the pair of upper and lower curved portions 19 are equal to each other when viewed from the outside in the radial direction.

補強凹部17の上端縁と、胴部13のパネル面部15の上端縁と、の上下方向の距離、並びに、補強凹部17の下端縁と、胴部13のパネル面部15の下端縁と、の上下方向の距離は、補強凹部17の上下方向の長さの半分程度となっている。図示の例では、前者の距離は、後者の距離より短くなっている。補強凹部17の上下方向の長さは、胴部13の上下方向の長さの半分程度となっている。
胴部13のパネル面部15における周方向の端縁、つまり区画稜線部16と、補強凹部17と、の周方向の距離は、補強凹部17の周方向の幅の半分未満となっている。区画稜線部16および前記直線部18は互いに平行になっている。
The vertical distance between the upper edge of the reinforcement recess 17 and the upper edge of the panel surface 15 of the body 13, and the vertical distance between the lower edge of the reinforcement recess 17 and the lower edge of the panel surface 15 of the body 13 The distance in the direction is approximately half the length of the reinforcing recess 17 in the vertical direction. In the illustrated example, the former distance is shorter than the latter distance. The length of the reinforcement recess 17 in the vertical direction is approximately half the length of the body portion 13 in the vertical direction.
The circumferential distance between the circumferential edge of the panel surface portion 15 of the body portion 13 , that is, the dividing ridgeline portion 16 and the reinforcing recessed portion 17 is less than half the circumferential width of the reinforcing recessed portion 17 . The division ridge line portion 16 and the straight line portion 18 are parallel to each other.

図3に示されるように、上下方向に沿う縦断面視において、補強凹部17のうち、一対の直線部18同士の間に位置する部分(以下、平坦部という)21の深さは、上下方向の全長にわたって同等となっている。前記縦断面視において、補強凹部17のうち、平坦部21より上下方向の外側に位置し、曲線部19で囲まれた部分(以下、傾斜部という)22の深さは、上下方向の外側に向かうに従い漸次、浅くなっている。
平坦部21の上下方向の長さは、各傾斜部22の上下方向の大きさの2倍以上となっている。図2に示されるように、ボトル軸Oに直交する横断面視において、補強凹部17は、上下方向の全長にわたって、径方向の内側に向けて窪む凹曲線状を呈する。
As shown in FIG. 3, in a vertical cross-sectional view along the vertical direction, the depth of a portion (hereinafter referred to as a flat portion) 21 located between the pair of straight portions 18 of the reinforcing recess 17 is are equal over the entire length of the In the vertical cross-sectional view, the depth of a portion (hereinafter referred to as an inclined portion) 22 located outside the flat portion 21 of the reinforcing recess 17 and surrounded by the curved portion 19 is outside in the vertical direction. It gradually becomes shallower as it goes.
The length of the flat portion 21 in the vertical direction is at least twice the size of each inclined portion 22 in the vertical direction. As shown in FIG. 2 , in a cross-sectional view perpendicular to the bottle axis O, the reinforcing recess 17 has a concave curved shape that is depressed radially inward over the entire length in the vertical direction.

補強凹部17のうち、中央部の窪み量は、他の部分の窪み量より大きく、0.5mm以上0.9mm未満となっている。図示の例では、補強凹部17のうち、傾斜部22の上下方向の内端縁、および平坦部21それぞれにおける周方向の中央部の窪み量が、他の部分より大きく約0.7mmとなっている。 The recessed amount of the central portion of the reinforcing recessed portion 17 is larger than the recessed amount of the other portions, and is 0.5 mm or more and less than 0.9 mm. In the illustrated example, in the reinforcement recess 17, the inner edge of the inclined portion 22 in the vertical direction and the center portion in the circumferential direction of the flat portion 21 each have a depression amount of about 0.7 mm, which is larger than that of the other portions. there is

以上説明したように、本実施形態によるボトル1によれば、胴部13のパネル面部15に、その中央部を上下方向に跨いで配設された補強凹部17が形成されているので、ボトル1に上下方向の圧縮荷重が継続して加えられたときに、胴部13が膨出変形する起点となる、つまり胴部13のクリープ変形の起点となる、パネル面部15の中央部を補強することが可能になり、胴部13のクリープ変形を抑制することができる。 As described above, according to the bottle 1 according to the present embodiment, the panel surface portion 15 of the body portion 13 is provided with the reinforcing recess portion 17 extending vertically across the central portion thereof. To reinforce the central portion of the panel surface portion 15, which becomes the starting point of swelling deformation of the body portion 13, that is, the starting point of creep deformation of the body portion 13 when a vertical compressive load is continuously applied to the panel surface portion 15. is possible, and creep deformation of the trunk portion 13 can be suppressed.

また、胴部13のパネル面部15における補強凹部17の開口周縁部の周方向の両端部が、上下方向に延びる直線部18となっているので、区画稜線部16と補強凹部17との間に、上下方向に延びる平滑な柱部が画成されることとなり、胴部13がクリープ変形することだけでなく、座屈変形することも抑制することができる。
以上より、胴部13を薄肉にしても、座屈強度の低下を抑えつつ、胴部13にクリープ変形が生ずるのを抑えることができる。
しかも、胴部13のパネル面部15に、突部ではなく、補強凹部17が形成されていることから、ボトル1に上下方向の圧縮荷重が継続して加えられたときに、補強凹部17の内面が、仮に径方向の外側に膨出変形しても、胴部13のパネル面部15の外周面より径方向の外側に膨出して復元不能になるのを抑制することができる。
Further, since both ends in the circumferential direction of the peripheral edge of the opening of the reinforcing recess 17 in the panel surface portion 15 of the trunk portion 13 form a straight portion 18 extending in the vertical direction, there is no gap between the dividing ridge 16 and the reinforcing recess 17. , a smooth column portion extending in the vertical direction is defined, and not only creep deformation of the body portion 13 but also buckling deformation can be suppressed.
As described above, even if the body portion 13 is made thin, it is possible to suppress creep deformation of the body portion 13 while suppressing a decrease in buckling strength.
Moreover, since the panel surface portion 15 of the body portion 13 is formed with the reinforcing recessed portion 17 instead of the protrusion, the inner surface of the reinforcing recessed portion 17 may be deformed when the compressive load in the vertical direction is continuously applied to the bottle 1 . However, even if it bulges and deforms radially outward, it is possible to prevent it from bulging radially outward from the outer peripheral surface of the panel surface portion 15 of the trunk portion 13 and becoming unrestorable.

また、胴部13のパネル面部15の中央部の肉厚が、0.6mm以上0.8mm以下となっているので、ボトル1の軽量化を図ることができる。そして、前述したように、胴部13のパネル面部15に補強凹部17が形成されていることから、ボトル1に上下方向の圧縮荷重が継続して加えられたときに、胴部13がクリープ変形するのを抑制することができる。
以上より、胴部13のクリープ変形を抑制しつつ、ボトル1の軽量化を図ることができる。
In addition, since the central portion of the panel surface portion 15 of the body portion 13 has a thickness of 0.6 mm or more and 0.8 mm or less, the weight of the bottle 1 can be reduced. As described above, since the reinforcing recess 17 is formed in the panel surface portion 15 of the body 13, when a vertical compressive load is continuously applied to the bottle 1, the body 13 undergoes creep deformation. can be suppressed.
As described above, it is possible to reduce the weight of the bottle 1 while suppressing the creep deformation of the body portion 13 .

また、補強凹部17の中央部の窪み量が、0.5mm以上0.9mm未満となっているので、ボトル1に上下方向の圧縮荷重が継続して加えられたときに、胴部13がクリープ変形するのを、座屈強度を確保しつつ抑制することができる。
補強凹部17の中央部の窪み量が、0.5mm未満になると、前述した胴部13のクリープ変形を抑えることが困難になり、0.9mm以上になると、座屈強度が低下するおそれがある。
In addition, since the amount of depression in the central portion of the reinforcing recess 17 is 0.5 mm or more and less than 0.9 mm, the barrel portion 13 creeps when a vertical compressive load is continuously applied to the bottle 1. Deformation can be suppressed while ensuring buckling strength.
If the amount of depression in the central portion of the reinforcing recess 17 is less than 0.5 mm, it will be difficult to suppress the aforementioned creep deformation of the trunk portion 13. If it is 0.9 mm or more, the buckling strength may decrease. .

また、胴部13のパネル面部15における補強凹部17の開口周縁部が、一対の直線部18における上下方向の端部同士を周方向に連結し、上下方向の外側に向けて突となるように湾曲した曲線部19を備えるので、パネル面部15に補強凹部17を形成したことで、パネル面部15に応力集中箇所が生ずるのを抑制することが可能になり、前述した胴部13のクリープ変形を効果的に抑制することができる。 Further, the peripheral edge of the opening of the reinforcing recess 17 in the panel surface portion 15 of the trunk portion 13 connects the vertical ends of the pair of straight portions 18 in the circumferential direction and protrudes outward in the vertical direction. Since the panel surface portion 15 is provided with the curved curved portion 19, it is possible to suppress the occurrence of stress concentration points in the panel surface portion 15 by forming the reinforcement recessed portion 17 in the panel surface portion 15, thereby suppressing the above-described creep deformation of the body portion 13. can be effectively suppressed.

また、前記縦断面視において、補強凹部17のうち、一対の直線部18同士の間に位置する平坦部21の深さが、上下方向の全長にわたって同等になっているので、胴部13のパネル面部15に補強凹部17を形成したことによる座屈強度の低下を防ぐことができる。
また、前記縦断面視において、補強凹部17のうち、平坦部21より上下方向の外側に位置し、曲線部19で囲まれた傾斜部22の深さが、上下方向の外側に向かうに従い漸次、浅くなっているので、ボトル1に上下方向の圧縮荷重が継続して加えられたときに、補強凹部17の内面を偏り少なく変形させやすくなり、補強凹部17の内面に応力集中箇所が生ずるのを抑制することができる。
In addition, in the vertical cross-sectional view, the depth of the flat portion 21 positioned between the pair of straight portions 18 of the reinforcing recess 17 is the same over the entire length in the vertical direction, so that the panel of the trunk portion 13 A decrease in buckling strength due to the formation of the reinforcing recess 17 in the surface portion 15 can be prevented.
In addition, in the vertical cross-sectional view, the depth of the inclined portion 22 located outside the flat portion 21 in the reinforcing recess 17 and surrounded by the curved portion 19 gradually increases outward in the vertical direction. Since the depth is shallow, when a vertical compressive load is continuously applied to the bottle 1, the inner surface of the reinforcing recess 17 can be easily deformed with little deviation, and the occurrence of stress concentration points on the inner surface of the reinforcing recess 17 can be prevented. can be suppressed.

本発明は上記した実施の形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。 The present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the scope of the invention.

例えば前記実施形態では、補強凹部17として、径方向の外側から見た平面視で、上下方向に長い長方形状を呈する構成を示したが、正方形状にするなど適宜変更してもよい。 For example, in the above-described embodiment, the reinforcement recess 17 has a rectangular shape elongated in the vertical direction when viewed from the outside in the radial direction.

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、およびポリエチレンナフタレートなどのポリエステル、または、ポリエチレン、およびポリプロピレンなどのポリオレフィン、または、エチレンビニルアルコール共重合体(EVOH)などを採用してもよい。このうち、ポリエチレンとしては、低密度ポリエチレン(LDPE)、および直鎖状低密度ポリエチレン(LLDPE)などが挙げられる。 The synthetic resin material forming the bottle 1 is, for example, polyester such as polyethylene terephthalate and polyethylene naphthalate, polyolefin such as polyethylene and polypropylene, or ethylene vinyl alcohol copolymer (EVOH). may Among these, polyethylene includes low density polyethylene (LDPE), linear low density polyethylene (LLDPE), and the like.

その他、本発明の趣旨を逸脱しない範囲で、上記した実施の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、上記した変形例を適宜組み合わせてもよい。 In addition, it is possible to appropriately replace the components in the above-described embodiment with well-known components without departing from the gist of the present invention, and the above-described modifications may be combined as appropriate.

1 ボトル
11 口部
12 肩部
13 胴部
14 底部
15 パネル面部
17 補強凹部
18 直線部
19 曲線部
21 平坦部
22 傾斜部
O ボトル軸
1 Bottle 11 Mouth 12 Shoulder 13 Body 14 Bottom 15 Panel surface 17 Reinforcing concave portion 18 Straight portion 19 Curved portion 21 Flat portion 22 Inclined portion O Bottle shaft

Claims (3)

口部、肩部、胴部、および底部が、ボトル軸方向に沿って上方から下方に向けてこの順に連設され、
前記肩部は、上方に向かうに従い漸次、縮径し、
前記肩部の上下方向の長さは、前記胴部の上下方向の長さの半分より長く、
前記胴部は、複数のパネル面部がボトル軸回りの周方向に連設された構成とされ、
前記パネル面部に、その中央部を上下方向に跨いで配設された補強凹部が形成され、
前記補強凹部は、このボトルに上下方向の圧縮荷重が継続して加えられたときに、前記胴部が膨出変形する起点となる、前記パネル面部の中央部を補強し、
前記パネル面部における前記補強凹部の開口周縁部の周方向の両端部は、上下方向に延びる直線部となっており、
前記パネル面部における前記補強凹部の開口周縁部は、
一対の前記直線部と、
一対の前記直線部における上下方向の端部同士を周方向に連結し、上下方向の外側に向けて突となるように湾曲した曲線部と、により構成され、
ボトル軸に直交する横断面視において、前記補強凹部は、上下方向の全長にわたって、径方向の内側に向けて窪む凹曲線状を呈し、
上下方向に沿う縦断面視において、前記補強凹部のうち、一対の前記直線部同士の間に位置する部分より上下方向の外側に位置し、前記曲線部で囲まれた部分の深さは、上下方向の外側に向かうに従い漸次、浅くなっており、
前記補強凹部の中央部の窪み量は、0.5mm以上0.9mm未満となっている、ボトル。
The mouth portion, shoulder portion, body portion, and bottom portion are continuously arranged in this order from top to bottom along the axial direction of the bottle,
The shoulder portion gradually decreases in diameter as it goes upward,
the length of the shoulder portion in the vertical direction is longer than half the length of the body portion in the vertical direction;
The body portion has a structure in which a plurality of panel surface portions are connected in a circumferential direction around the bottle axis,
A reinforcing recess is formed in the panel surface portion so as to straddle the central portion in the vertical direction,
The reinforcement recess reinforces the central portion of the panel surface portion, which is a starting point for swelling deformation of the body portion when a vertical compressive load is continuously applied to the bottle,
Both ends in the circumferential direction of the peripheral edge of the opening of the reinforcing recess in the panel surface portion are linear portions extending in the vertical direction ,
An opening peripheral portion of the reinforcement recess in the panel surface portion is
a pair of said straight portions;
a curved portion that connects the ends of the pair of straight portions in the vertical direction in the circumferential direction and curves so as to protrude outward in the vertical direction,
In a cross-sectional view perpendicular to the bottle axis, the reinforcing recess has a concave curved shape that is depressed radially inward over the entire length in the vertical direction,
In a longitudinal cross-sectional view along the vertical direction, the depth of the portion of the reinforcing recess that is located outside the portion located between the pair of straight portions in the vertical direction and surrounded by the curved portion is It gradually becomes shallower toward the outside of the direction,
The bottle , wherein the amount of recess in the central portion of the reinforcing recess is 0.5 mm or more and less than 0.9 mm .
上下方向に沿う縦断面視において、前記補強凹部のうち、一対の前記直線部同士の間に位置する部分の深さは、上下方向の全長にわたって同等されている、請求項1に記載のボトル。 2. The bottle according to claim 1 , wherein, in a vertical cross-sectional view along the vertical direction, the depth of the portion of the reinforcing recess located between the pair of the straight portions is the same over the entire length in the vertical direction. . 前記パネル面部の中央部の肉厚は、0.6mm以上0.8mm以下となっている、請求項1または2に記載のボトル。 3. The bottle according to claim 1 , wherein the central portion of the panel surface portion has a thickness of 0.6 mm or more and 0.8 mm or less.
JP2018123816A 2018-06-29 2018-06-29 Bottle Active JP7270345B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018123816A JP7270345B2 (en) 2018-06-29 2018-06-29 Bottle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018123816A JP7270345B2 (en) 2018-06-29 2018-06-29 Bottle

Publications (2)

Publication Number Publication Date
JP2020001761A JP2020001761A (en) 2020-01-09
JP7270345B2 true JP7270345B2 (en) 2023-05-10

Family

ID=69098396

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018123816A Active JP7270345B2 (en) 2018-06-29 2018-06-29 Bottle

Country Status (1)

Country Link
JP (1) JP7270345B2 (en)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004534629A (en) 2001-07-16 2004-11-18 マ,キ−ヒュン Plastic massage bottle
WO2005048218A1 (en) 2003-11-12 2005-05-26 Fuji Seal International, Inc. Shrink label for pet bottle and pet bottle with the label attached thereto
JP2006182438A (en) 2004-12-28 2006-07-13 Yoshino Kogyosho Co Ltd Synthetic resin made bottle container
JP2006240728A (en) 2005-03-07 2006-09-14 Toyo Seikan Kaisha Ltd Plastic bottle container
JP2006327638A (en) 2005-05-27 2006-12-07 Ishizuka Glass Co Ltd Bottle made of polyethylene terephthalate resin
JP2007168892A (en) 2005-12-26 2007-07-05 Yoshino Kogyosho Co Ltd Container made of resin with label
JP2008143594A (en) 2006-12-13 2008-06-26 Dainippon Printing Co Ltd Contents container, and container body composing it
JP2010502523A (en) 2006-08-28 2010-01-28 ザ・コカ−コーラ・カンパニー Groove features for pressurized bottles
US20100326951A1 (en) 2009-06-30 2010-12-30 Ocean Spray Cranberries, Inc. Lightweight, high strength bottle
JP1535393S (en) 2015-03-16 2015-10-19
JP2015202880A (en) 2014-04-11 2015-11-16 ザ コカ・コーラ カンパニーThe Coca‐Cola Company plastic bottle
JP2016159911A (en) 2015-02-27 2016-09-05 株式会社吉野工業所 Bottle having formed positioning recess
JP2017109786A (en) 2015-12-18 2017-06-22 東洋製罐株式会社 Synthetic resin container
JP2018039522A (en) 2016-09-06 2018-03-15 東洋製罐株式会社 Synthetic resin bottle
JP1601096S (en) 2017-02-09 2018-04-02

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH082581B2 (en) * 1985-07-30 1996-01-17 株式会社吉野工業所 Method and apparatus for forming plastic container
JPH06143397A (en) * 1992-11-11 1994-05-24 Toyo Seikan Kaisha Ltd Heat-fixation polyester molded container and manufacture thereof
JP2607085Y2 (en) * 1993-06-16 2001-03-19 三菱樹脂株式会社 Plastic bottle with panel

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004534629A (en) 2001-07-16 2004-11-18 マ,キ−ヒュン Plastic massage bottle
WO2005048218A1 (en) 2003-11-12 2005-05-26 Fuji Seal International, Inc. Shrink label for pet bottle and pet bottle with the label attached thereto
JP2006182438A (en) 2004-12-28 2006-07-13 Yoshino Kogyosho Co Ltd Synthetic resin made bottle container
JP2006240728A (en) 2005-03-07 2006-09-14 Toyo Seikan Kaisha Ltd Plastic bottle container
JP2006327638A (en) 2005-05-27 2006-12-07 Ishizuka Glass Co Ltd Bottle made of polyethylene terephthalate resin
JP2007168892A (en) 2005-12-26 2007-07-05 Yoshino Kogyosho Co Ltd Container made of resin with label
JP2010502523A (en) 2006-08-28 2010-01-28 ザ・コカ−コーラ・カンパニー Groove features for pressurized bottles
JP2008143594A (en) 2006-12-13 2008-06-26 Dainippon Printing Co Ltd Contents container, and container body composing it
US20100326951A1 (en) 2009-06-30 2010-12-30 Ocean Spray Cranberries, Inc. Lightweight, high strength bottle
JP2015202880A (en) 2014-04-11 2015-11-16 ザ コカ・コーラ カンパニーThe Coca‐Cola Company plastic bottle
JP2016159911A (en) 2015-02-27 2016-09-05 株式会社吉野工業所 Bottle having formed positioning recess
JP1535393S (en) 2015-03-16 2015-10-19
JP2017109786A (en) 2015-12-18 2017-06-22 東洋製罐株式会社 Synthetic resin container
JP2018039522A (en) 2016-09-06 2018-03-15 東洋製罐株式会社 Synthetic resin bottle
JP1601096S (en) 2017-02-09 2018-04-02

Also Published As

Publication number Publication date
JP2020001761A (en) 2020-01-09

Similar Documents

Publication Publication Date Title
US11634247B2 (en) Bottle
AU2012248279B2 (en) Bottle
JP6307370B2 (en) Bottle
KR20120076332A (en) Circular bottle body manufactured from synthetic resin
JP7270345B2 (en) Bottle
US10597213B2 (en) Pressure reduction-absorbing bottle
US11459140B2 (en) Bottle
JP7158181B2 (en) square bottle
JP7300880B2 (en) Bottle
JP6584108B2 (en) Plastic container
JP6335736B2 (en) Bottle
JP7493396B2 (en) Pressure-resistant bottle
JP2008030817A (en) Synthetic resin bottle
JP7122855B2 (en) Bottle
JP7243436B2 (en) multiple container
JP7068909B2 (en) Bottle
JP7203528B2 (en) Bottle
US20240002097A1 (en) Bottle
JP6925204B2 (en) Pressure resistant bottle
JP7322492B2 (en) Containers and their preforms
JP2010036943A (en) Plastic bottle
JP2023147379A (en) Synthetic resin round bottle
JP6670573B2 (en) A bottle with a panel formed on the body
JP2024079588A (en) Pressure-resistant bottle
JP2023098259A (en) Synthetic resin container

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210105

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20211115

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20211124

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220107

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220510

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220616

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20221004

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20221205

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20230328

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20230425

R150 Certificate of patent or registration of utility model

Ref document number: 7270345

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150