JP4986436B2 - Synthetic resin bottle-type container with a vacuum absorbing panel - Google Patents

Synthetic resin bottle-type container with a vacuum absorbing panel Download PDF

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JP4986436B2
JP4986436B2 JP2005314000A JP2005314000A JP4986436B2 JP 4986436 B2 JP4986436 B2 JP 4986436B2 JP 2005314000 A JP2005314000 A JP 2005314000A JP 2005314000 A JP2005314000 A JP 2005314000A JP 4986436 B2 JP4986436 B2 JP 4986436B2
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reduced pressure
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synthetic resin
resin bottle
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孝典 鈴木
高雄 飯塚
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Yoshino Kogyosho Co Ltd
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Description

本発明は、胴部の側壁に減圧吸収パネルを有する合成樹脂製ボトル型容器に関するものであり、該減圧吸収パネルのサイズを変更することなしに減圧吸収量をより一層増大させようとするものである。   The present invention relates to a synthetic resin bottle-type container having a vacuum absorption panel on the side wall of a body portion, and intends to further increase the vacuum absorption amount without changing the size of the vacuum absorption panel. is there.

ペットボトルに代表される合成樹脂製のボトル型容器は、軽量で取り扱いが容易であり、透明性を確保できるのでガラス製の容器と比較して遜色のない外観を呈すること、しかも、コスト的にも安価であることから、近年、食品や飲料、化粧料あるいは薬剤等を入れる容器として多用されている。   Synthetic resin bottle-type containers such as plastic bottles are lightweight, easy to handle, and can ensure transparency, so they have an appearance that is comparable to glass containers, and cost-effectively. In recent years, it has been widely used as a container for storing food, beverages, cosmetics, drugs, and the like.

また、この種の容器では、殺菌等のために80〜95℃程度の温度を保有したままで内容物を充填、密封する商品や常温で殺菌充填(アセプティック充填)を行う商品に対応させたものもでてきている。   In addition, this type of container is compatible with products that fill and seal the contents while maintaining a temperature of about 80 to 95 ° C for sterilization, and products that are sterilized and filled at room temperature (aseptic filling). It is also coming out.

とくに、高温充填やアセプティック充填を行う商品に対応させた容器において、容器内の圧力変化(特に減圧)が生じた場合に、同変化による形状変化(外観形状の変化)を伴うことから、容器の胴体には、たわみ変形を積極的に起こさせて容器の外観形状を安定保持する減圧吸収パネルが備えられている。   In particular, in a container that is compatible with products that are filled with high temperature or aseptic, when a change in pressure (especially reduced pressure) occurs in the container, a change in shape (change in external shape) is caused by the change. The fuselage is provided with a vacuum absorbing panel that positively causes deflection deformation and stably maintains the external shape of the container.

ところで、減圧吸収パネルを備えた従来の容器においては、該パネルの吸収量を超えて容器内が減圧してしまうこともあって、この場合、減圧吸収パネルでは圧力変化を吸収しきれず、該減圧吸収パネル以外の胴壁部の変形を誘引し、容器の外観形状が損なわれる結果、商品価値が失われることになる。   By the way, in a conventional container provided with a reduced pressure absorption panel, the inside of the container may be depressurized exceeding the absorption amount of the panel. In this case, the reduced pressure absorption panel cannot absorb the pressure change, and the reduced pressure As a result of inducing deformation of the body wall portion other than the absorbent panel and damaging the external shape of the container, the commercial value is lost.

この点に関する先行技術としては、容器の周壁に少なくとも2個の減圧吸収用の凹部を設け、該凹部の相互間にそれらに連なる溝部(縦リブ)を形成して容器内部が負圧状態になったときの変形を各凹部に均等に分散させるプラスチック容器が提案されている(例えば特許文献1参照)。
特許第3608420号公報
As prior art regarding this point, at least two recesses for absorbing reduced pressure are provided on the peripheral wall of the container, and grooves (vertical ribs) connected to the recesses are formed between the recesses so that the inside of the container is in a negative pressure state. There has been proposed a plastic container that uniformly disperses deformation in each recess (see, for example, Patent Document 1).
Japanese Patent No. 3608420

しかしながら、上記のようなプラスチック容器は、容器の横剛性が損なわれるため減圧の際に該溝部を起点にして容器が変形することがあり、今だ改善の余地が残されているのが現状であった。   However, the plastic containers such as those described above may be deformed starting from the groove during decompression because the lateral rigidity of the container is impaired, and there is still room for improvement at present. there were.

本発明の課題は、容器内が減圧された場合においても十分な吸収量を確保可能とし、横剛性の低下を招くことのない新規な合成樹脂製ボトル型容器を提案するところにある。   An object of the present invention is to propose a new synthetic resin bottle-type container that can secure a sufficient amount of absorption even when the inside of the container is depressurized and does not cause a decrease in lateral rigidity.

本発明は、内容物を注出する口部を有する上側胴部と、この上側胴部にウエストを介して一体的につながる下側胴部とを備え、該上側胴部及び下側胴部のそれぞれにおいて向きを同じくする側壁につき、パネル壁をたわみ変形させて減圧に伴う容器の形状変形を防止する減圧吸収パネルを設けた合成樹脂製ボトル型容器であって、
前記減圧吸収パネルは、該減圧吸収パネルの縁部が、側壁を容器の内方に向けて凹ませる凹部であり、その縁部の少なくとも一部分に、該縁部をウエストに向けて該減圧吸収パネルの幅内で凸状に変位させた輪郭部位を設け、
該輪郭部位の突出代は、前記ウエストに到達しない寸法に設定されている、ことを特徴とする減圧吸収パネルを備えた合成樹脂製ボトル型容器である。
The present invention includes an upper body having a mouth portion for pouring contents, and a lower body integrally connected to the upper body via a waist, the upper body and the lower body For each side wall having the same orientation, a plastic resin bottle-type container provided with a reduced pressure absorption panel that deforms the panel wall to prevent deformation of the container accompanying decompression,
In the reduced pressure absorption panel, the edge of the reduced pressure absorption panel is a recess that has a side wall recessed toward the inside of the container , and the reduced pressure absorption panel has at least a part of the edge and the edge toward the waist. The contour part displaced in a convex shape within the width of
The protruding margin of the contour portion is a synthetic resin bottle-type container provided with a reduced pressure absorption panel, characterized in that it is set to a dimension that does not reach the waist .

上記の構成に成る合成樹脂製ボトル型容器は、前記上側胴部及び下側胴部の減圧吸収パネルが、凸状に変位させた輪郭部位を互いに向い合わせに配置するのが好ましい。 In the synthetic resin bottle-type container having the above-described configuration, it is preferable that the decompression absorption panels of the upper body portion and the lower body portion are arranged so that the contour portions displaced in a convex shape face each other.

また、前記減圧吸収パネルの輪郭形状は、ウエストラインを基準にして上側胴部、下側胴部で線対称とするのがよい。   In addition, the contour shape of the reduced pressure absorption panel may be axisymmetric with respect to the waistline at the upper body portion and the lower body portion.

該減圧吸収パネルの縁部が、側壁を容器の内方に向けて凹ませる凹部であり、その縁部の少なくとも一部分に、該縁部をウエストに向けて該減圧吸収パネルの幅内で凸状に変位させた輪郭部位を設け、該輪郭部位の突出代は、前記ウエストに到達しない寸法に設定されているものとすると、その輪郭部位に隣接する側壁が減圧吸収パネルとともにたわみ変形することになり、減圧吸収量が増大する。 The edge of the reduced pressure absorption panel is a recess that has a side wall recessed toward the inside of the container, and at least part of the edge is convex within the width of the reduced pressure absorption panel with the edge facing the waist. If the contour portion displaced is provided and the projection margin of the contour portion is set to a dimension that does not reach the waist, the side wall adjacent to the contour portion will bend and deform together with the vacuum absorbing panel. The amount of vacuum absorption increases.

凸状に変位させた輪郭部位を上側胴部及び下側胴部との間で互いに向い合わせにした場合、各胴部の減圧吸収パネルがそれぞれたわみ変形するだけでなく、その相互間に位置する側壁を含めた部分の全体がたわみ変形するため、十分な減圧吸収量が確保される。 When the contour portion is displaced to the convex alignment opposite one another between the upper body and lower body portions, not only the vacuum panels of each barrel is bending respectively deformed, positioned between the mutually Since the entire portion including the side wall is bent and deformed, a sufficient amount of vacuum absorption is ensured.

以下、図面を参照して本発明をより具体的に説明する。
図1は本発明に従う合成樹脂製ボトル型容器(ペットボトル等)の実施の形態を示したものであり、図2はそのA−A断面を示した図である。
Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 shows an embodiment of a synthetic resin bottle-type container (such as a plastic bottle) according to the present invention, and FIG. 2 is a cross-sectional view taken along the line AA.

図における1は容器内の内容物を注出する口部、2は上側胴部、3は環状の細溝にて形成されたウエスト、4はウエスト3を介してつながる下側胴部であり、これらは射出成形等によって作製されたプリフォームを二軸延伸ブロー成形することにより一体的に形成される。   In the figure, 1 is a mouth part for pouring the contents in the container, 2 is an upper body part, 3 is a waist formed by an annular narrow groove, 4 is a lower body part connected via the waist 3, These are integrally formed by biaxially stretching blow-molding a preform produced by injection molding or the like.

また、5は上側胴部2の側壁に、それの縁部となる凹部50によって区画されて、この凹部50とその内側の中央凹部51とからなる減圧吸収パネルである。この減圧吸収パネル5は下側縁部の角をウエスト3に向けて2箇所凸状に変位させた輪郭部位5aを有している。この輪郭部位5aの突出代t(図1参照)は、ウエスト3に到達しない寸法に設定されている。 Reference numeral 5 denotes a reduced-pressure absorption panel which is partitioned by a recess 50 serving as an edge of the upper body 2 and includes the recess 50 and a central recess 51 inside thereof . This reduced pressure absorption panel 5 has a contour part 5a in which the corners of the lower edge are displaced in two convex directions toward the waist 3. The protrusion margin t 1 (see FIG. 1) of the contour portion 5 a is set to a dimension that does not reach the waist 3.

また、6は下側胴部4の側壁に、それの縁部となる凹部60によって区画されて、この凹部60とその内側の中央凹部61とからなる減圧吸収パネルである。この減圧吸収パネル6は上側縁部の角をウエスト3に向けて2箇所凸状に変位させた輪郭部位6aを有しており、この輪郭部位6aの突出代t(図1参照)も上記輪郭部位5aと同様に、ウエスト3に到達しない寸法に設定されている。 Reference numeral 6 denotes a reduced pressure absorption panel which is partitioned by a recess 60 which is an edge of the side wall of the lower body 4 and includes the recess 60 and a central recess 61 inside the recess 60 . The reduced pressure absorbing panel 6 has a contour portion 6a in which the corner of the upper edge portion is displaced in two convex directions toward the waist 3, and the protrusion allowance t 2 (see FIG. 1) of the contour portion 6a is also described above. Similar to the contour part 5a, the dimension is set so as not to reach the waist 3.

上記のような構成になる合成樹脂製ボトル型容器は、減圧吸収パネル5、6での吸収量が限界に達してもその相互間に位置する領域が該輪郭部位5a、6aを起点にして優先的にたわみ変形するととなり減圧吸収量が増大され、しかも、輪郭部位5a、6aはウエスト3に達していないので従来の容器の如く溝部を起点にした形状変形がなく、十分な横剛性を確保することができる。   In the synthetic resin bottle type container having the above-described configuration, even if the amount of absorption in the reduced pressure absorption panels 5 and 6 reaches the limit, the region located between them takes priority starting from the contour parts 5a and 6a. Therefore, the amount of reduced pressure absorption increases, and the contour portions 5a and 6a do not reach the waist 3, so that there is no shape deformation starting from the groove as in the conventional container, and sufficient lateral rigidity is ensured. be able to.

減圧吸収パネル5、6の相互間を他の領域に比べてたわみ変形させやすくするため、輪郭部位5a、6aは互いに向い合わせになる配置し、ウエスト3の中心線を基準にして線対称となる輪郭形状とする。   In order to make it easier to bend and deform between the vacuum absorbing panels 5 and 6 than in other regions, the contour portions 5a and 6a are arranged to face each other and are symmetrical with respect to the center line of the waist 3. Contour shape.

減圧吸収パネル5、6の輪郭形状は、他の角を2箇所凸状とした輪郭部位5b、6bをさらに追加した図3に示したものでもよいし、角の相互間の中央部の1箇所で凸状とした図5に示すようなものでもよい。なお、本発明の実施の形態とは異なるが、該輪郭部位5a、5b、6a、6bを横向きにした図4に示すようにしてもよい。また、凸状の輪郭部位に代えて凹状の輪郭部位を形成してもよい。なお、上掲図3のように凸状の輪郭部位を容器の肩部に向けて形成する場合、その突出代は肩部との境界に到達しない寸法に設定するのがよい。 The contour shape of the vacuum absorbing panels 5 and 6 may be the one shown in FIG. 3 in which contour portions 5b and 6b having two other corners convex are further added , or one central portion between the corners. It may be a convex shape as shown in FIG. Although different from the embodiment of the present invention, the contour portions 5a, 5b, 6a, 6b may be shown in FIG. Further, a concave contour portion may be formed instead of the convex contour portion. In addition, when forming a convex outline part toward the shoulder part of a container like the above-mentioned FIG. 3, it is good to set the protrusion margin to the dimension which does not reach the boundary with a shoulder part.

減圧吸収パネルのサイズ変更を伴わずに減圧吸収量を増大させることが可能で、横剛性の低下を招くことのない合成樹脂製ボトル型容器が提供できる。   It is possible to increase the amount of vacuum absorption without changing the size of the vacuum absorption panel, and it is possible to provide a synthetic resin bottle-type container that does not cause a decrease in lateral rigidity.

本発明に従う合成樹脂製ボトル型容器の実施の形態を示した図である。It is the figure which showed embodiment of the synthetic resin bottle-shaped container according to this invention. 図1のA−A断面を示した図である。It is the figure which showed the AA cross section of FIG. 本発明に従う合成樹脂製ボトル型容器の他の実施形態を減圧吸収パネルについて示した図である。It is the figure which showed other embodiment of the synthetic resin bottle-shaped containers according to this invention about the vacuum absorption panel. 合成樹脂製ボトル型容器の減圧吸収パネルについて示した図である。It is the figure shown about the vacuum absorption panel of the synthetic resin bottle type containers . 本発明に従う合成樹脂製ボトル型容器の他の実施形態を減圧吸収パネルについて示した図である。It is the figure which showed other embodiment of the synthetic resin bottle-shaped containers according to this invention about the vacuum absorption panel.

符号の説明Explanation of symbols

1 口部
2 上側胴部
3 ウエスト
4 下側胴部
5 減圧吸収パネル
5a 輪郭部位
6 減圧吸収パネル
6a 輪郭部位
t 突出代
t 突出代
1 mouth part 2 upper trunk part 3 waist 4 lower trunk part 5 decompression absorption panel
5a Contour area 6 Vacuum absorbing panel
6a Contour area
t 1 protrusion allowance
t 2 protrusion allowance

Claims (3)

内容物を注出する口部を有する上側胴部と、この上側胴部にウエストを介して一体的につながる下側胴部とを備え、該上側胴部及び下側胴部のそれぞれにおいて向きを同じくする側壁につき、パネル壁をたわみ変形させて減圧に伴う容器の形状変形を防止する減圧吸収パネルを設けた合成樹脂製ボトル型容器であって、
前記減圧吸収パネルは、該減圧吸収パネルの縁部が、側壁を容器の内方に向けて凹ませる凹部であり、その縁部の少なくとも一部分に、該縁部をウエストに向けて該減圧吸収パネルの幅内で凸状に変位させた輪郭部位を設け、
該輪郭部位の突出代は、前記ウエストに到達しない寸法に設定されている、ことを特徴とする減圧吸収パネルを備えた合成樹脂製ボトル型容器。
An upper body having a mouth portion for pouring the contents, and a lower body integrally connected to the upper body via a waist, each of the upper body and the lower body being oriented. For the same side wall, it is a synthetic resin bottle type container provided with a reduced pressure absorption panel that deforms the panel wall to prevent deformation of the container due to reduced pressure,
In the reduced pressure absorption panel, the edge of the reduced pressure absorption panel is a recess that has a side wall recessed toward the inside of the container, and the reduced pressure absorption panel has at least a part of the edge and the edge toward the waist. The contour part displaced in a convex shape within the width of
A synthetic resin bottle-type container provided with a reduced pressure absorption panel, characterized in that a protruding margin of the contour portion is set to a dimension that does not reach the waist.
前記上側胴部及び下側胴部の減圧吸収パネルは、凸状に変位させた輪郭部位を互いに向い合わせに配置したものである、請求項1記載の減圧吸収パネルを備えた合成樹脂製ボトル型容器。   The decompression absorption panel of the said upper trunk | drum and lower trunk | drum is a synthetic resin bottle type | mold provided with the decompression absorption panel of Claim 1 which has arrange | positioned the contour part displaced convexly mutually. container. 前記減圧吸収パネルの輪郭形状は、ウエストラインを基準にして上側胴部、下側胴部で線対称になる、請求項1又は2記載の減圧吸収パネルを備えた合成樹脂製ボトル型容器。
れる。
3. The synthetic resin bottle-type container provided with the reduced pressure absorption panel according to claim 1, wherein a contour shape of the reduced pressure absorption panel is symmetrical with respect to the upper body portion and the lower body portion with respect to the waistline.
It is.
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