JP5252291B2 - Synthetic resin round frame - Google Patents

Synthetic resin round frame Download PDF

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JP5252291B2
JP5252291B2 JP2008332088A JP2008332088A JP5252291B2 JP 5252291 B2 JP5252291 B2 JP 5252291B2 JP 2008332088 A JP2008332088 A JP 2008332088A JP 2008332088 A JP2008332088 A JP 2008332088A JP 5252291 B2 JP5252291 B2 JP 5252291B2
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vacuum
synthetic resin
column
panel
center line
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JP2010149911A (en
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一彦 清水
正人 中村
敏正 田中
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Yoshino Kogyosho Co Ltd
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Description

本発明は、胴部に減圧吸収パネルを備える合成樹脂製丸型壜体に関するものである。   The present invention relates to a synthetic resin round casing having a vacuum absorption panel in a body portion.

従来、殺菌を必要とするたとえば果汁飲料、お茶等のポリエチレンテレフタレート（以下、ＰＥＴと記す。）樹脂製の壜体（ペットボトル）等の合成樹脂製壜体への充填方法として、所謂、高温充填と呼ばれる方法があるが、９０℃前後の温度で内容液を壜体に充填し、キャップをして密封後、冷却するものであり、冷却後には壜体内がかなりの減圧状態となる。   Conventionally, as a method for filling a synthetic resin casing such as a polyethylene terephthalate (hereinafter referred to as PET) resin, such as a fruit juice drink or tea, which requires sterilization, a so-called high temperature filling is used. However, the casing is filled with the content liquid at a temperature of about 90 ° C., sealed with a cap, and then cooled. After cooling, the casing is considerably decompressed.

このため、上記のような高温充填を伴う用途については、胴部に減圧吸収パネルを形成し、減圧に伴なう壜体の減容変形を、壜体がいびつに変形した感じを与えることなく、目立たないように吸収（緩和）する機能、所謂、減圧吸収機能を発揮するようにした所謂、耐熱ボトルが用いられている。
たとえば、特許文献１には胴部に中心軸に対して軸対称に、６ケの縦長の減圧吸収パネルを凹状に陥没形成した丸型壜体に係る発明が記載されている。
特開２００３−６３５１６号公報 For this reason, for applications involving high-temperature filling as described above, a vacuum absorbing panel is formed in the body, and the volume reduction deformation of the casing accompanying decompression is not given to the feeling that the casing has been deformed. So-called heat-resistant bottles that exhibit a function of absorbing (relaxing) so as to be inconspicuous, that is, a so-called reduced-pressure absorbing function, are used.
For example, Patent Document 1 describes an invention relating to a round casing in which six vertically long vacuum absorbing panels are recessed and formed in an axisymmetric manner with respect to a central axis.
JP 2003-63516 A

ここで、１リッター以下程度の比較的小さな内容量の壜体では、胴部の表面積が小さくなり、必要な減圧吸収容量に対する減圧吸収パネルの面積の確保が難しくなる。また、デザイン性を重視して減圧吸収パネルを形成する領域を限定すると、壜体内部の減圧度を徐々に上げていき、胴部の周壁が局部的に、陥没変形あるいは座屈変形した時点における壜体の減容変形量である減圧吸収容量が不足すると云う問題がある。さらに減圧吸収容量を向上させるために減圧吸収パネルを変形し易い形状にすると壜体の座屈強度が小さくなると云う問題がある。   Here, in the case of a relatively small internal capacity housing of about 1 liter or less, the surface area of the body portion becomes small, and it becomes difficult to secure the area of the reduced pressure absorption panel for the required reduced pressure absorption capacity. Also, if the area where the vacuum absorbing panel is formed is limited with emphasis on design, the degree of vacuum inside the housing is gradually increased, and the peripheral wall of the trunk is locally depressed or buckled. There is a problem that the vacuum absorption capacity, which is the volume reduction deformation amount of the housing, is insufficient. Furthermore, there is a problem that the buckling strength of the housing is reduced if the reduced pressure absorption panel is shaped to be easily deformed in order to improve the reduced pressure absorption capacity.

そこで、本発明は合成樹脂製の丸型壜体における減圧吸収パネルによる減圧吸収機能を、減圧吸収パネルの面積の大きさによることなく、また壜体の座屈強度を損なうことなく向上させることを技術的な課題とするものである。   Therefore, the present invention is to improve the vacuum absorption function by the vacuum absorption panel in the synthetic resin round casing without depending on the size of the area of the vacuum absorption panel and without impairing the buckling strength of the casing. This is a technical issue.

上記課題を解決するための手段の中、本発明の主たる構成は、
円筒状の胴部の中央の高さ位置よりも上の高さ位置及び下の高さ位置に等しい径寸法を有して周設された上下の突状周リブと、この上下の突状周リブで挟まれる所定の高さ範囲内に、周方向に一定の幅寸法を有して並列状に配置され且つ段部でその周囲を囲うように陥没形成した複数の減圧吸収パネルと、隣接する減圧吸収パネル間に縦方向に残存形成した柱部と、を備えた丸型壜体であって、
柱部の左右中心線の方向が、壜体の中心軸の方向に対して平行、若しくは下方外側斜め方向に傾斜し、上の突状周リブ側の段部を下の突状周リブ側の段部よりも大きな深さ寸法で形成することにより、減圧吸収パネルの左右中心線の方向が、柱部(6)の左右中心線の方向よりもさらに下方外側斜め方向に傾斜するよう構成する、
と云うものである。 Among the means for solving the above problems, the main configuration of the present invention is:
Upper and lower projecting circumferential ribs having a diameter equal to the height position above and below the center height position of the cylindrical body, and the upper and lower projecting circumferences. in the constant height range where sandwiched by the ribs, a plurality of vacuum panels that depressed formed so as to surround the periphery thereof with arranged and stepped portions in parallel form having a constant width dimension in the circumferential direction, adjacent A columnar body formed in the vertical direction between the vacuum absorbing panels that are in contact with each other,
The direction of the left and right center line of the column part is parallel to the direction of the central axis of the housing, or is inclined downward obliquely outward, and the step part on the upper projecting peripheral rib side is on the lower projecting peripheral rib side. By forming with a greater depth dimension than the stepped portion, the direction of the left-right center line of the reduced pressure absorption panel is configured to be inclined further obliquely outward and downward than the direction of the left-right center line of the column (6).
It is said.

本願の発明者らは丸型壜体の減圧吸収パネルの減圧吸収機能を向上する目的で、柱部と減圧吸収パネルの形状の作用効果を検討するなかで、従来、この種の壜体では縦方向に残存形成される柱部は壜体の中心軸の方向に対して平行に、若しくは外観や座屈強度を考慮して、下方外側斜め方向に僅かに（〜２°程度）傾斜するように形成し、減圧吸収パネルを、その左右中心線の方向が柱部の左右中心線の方向に対して平行になるように形成するようにしていたが、
減圧吸収パネルを、その左右中心線の方向が、柱部の左右中心線の方向に対して下方外側斜め方向に傾斜するように形成することにより減圧吸収容量を大きくできる、すなわち減圧吸収機能を向上することができるのを見出し、上記主たる構成を創出するに至った。 The inventors of the present application have studied the operational effects of the shape of the column portion and the vacuum absorption panel for the purpose of improving the vacuum absorption function of the vacuum absorption panel of the round casing. The pillar portion remaining in the direction is parallel to the direction of the central axis of the housing, or is slightly inclined (about 2 °) in the downward outer diagonal direction in consideration of appearance and buckling strength. The vacuum absorption panel was formed so that the direction of its left and right center line was parallel to the direction of the left and right center line of the column part,
The reduced pressure absorption capacity can be increased by forming the vacuum absorption panel so that the direction of its left and right center line is inclined obliquely outward and downward with respect to the direction of the left and right center line of the pillar, that is, the vacuum absorption function is improved. We have found that we can do this and have created the main structure.

また、上記構成によれば上記のように減圧吸収機能を向上することができると共に、壜体の縦方向の座屈強度も大きくすることができることが判明した。   Further, according to the above configuration, it has been found that the vacuum absorbing function can be improved as described above, and the longitudinal buckling strength of the housing can be increased.

本発明の他の構成は、上記主たる構成において、柱部の壜体の中心軸の方向に対する傾斜角度Ｔ１を０°〜２°の範囲とし、減圧吸収パネルの壜体の中心軸の方向に対する傾斜角度Ｔ２を、傾斜角度Ｔ１＋０．５°〜傾斜角度Ｔ１＋２°の範囲とする、と云うものである。   Another configuration of the present invention is the above-described main configuration, wherein the inclination angle T1 with respect to the direction of the central axis of the column body is in the range of 0 ° to 2 °, and the inclination with respect to the direction of the central axis of the case of the vacuum absorption panel The angle T2 is in the range of the tilt angle T1 + 0.5 ° to the tilt angle T1 + 2 °.

ここで、減圧吸収パネルを、柱部の方向に対して下方外側斜め方向にどの程度傾斜させるかは、減圧吸収機能及び縦方向の座屈強度に係る改良効果、壜体の外観、横方向の座屈強度、ライン適性、成形性等を考慮して決めることができるが、１°程度の傾斜角度でも大きな効果を得ることが可能であり、
柱部と減圧吸収パネルの傾斜角度をそれぞれ上記構成とすることにより、外観の印象を大きく変えることなく、また成形性やライン適性を損なうことなく減圧吸収機能を効果的に向上させることができると共に、縦方向の座屈強度を大きくすることが可能となる。 Here, how much the vacuum absorbing panel is tilted in the downward outer diagonal direction with respect to the direction of the column part depends on the improvement effect related to the vacuum absorbing function and the longitudinal buckling strength, the appearance of the housing, and the lateral direction. It can be determined in consideration of buckling strength, line suitability, formability, etc., but it is possible to obtain a great effect even at an inclination angle of about 1 °.
By making the inclination angle of the column part and the vacuum absorption panel as described above, the vacuum absorption function can be effectively improved without greatly changing the impression of appearance and without impairing formability and line suitability. The longitudinal buckling strength can be increased.

本発明は、上記した構成となっているので、以下に示す効果を奏する。
本発明の主たる構成を有する丸型壜体にあっては、減圧吸収パネルを、その左右中心線の方向が、柱部の左右中心線の方向に対して下方外側斜め方向に傾斜するように形成することにより、減圧吸収機能を向上させることができると共に、縦方向の座屈強度を大きくすることができる。 Since the present invention has the above-described configuration, the following effects can be obtained.
In the round housing having the main configuration of the present invention, the decompression absorption panel is formed such that the direction of the left-right center line is inclined obliquely outward and downward with respect to the direction of the left-right center line of the column portion. By doing so, the vacuum absorption function can be improved and the longitudinal buckling strength can be increased.

以下、本発明の実施の形態を実施例に沿って図面を参照しながら説明する。
図１は本発明の合成樹脂製壜体の一実施例を示す正面図である。この壜体１はＰＥＴ樹脂製の二軸延伸ブロー成形品であり、口筒部２、肩部３、円筒状の胴部４、底部５を有する丸型壜体で、全高さが２０６ｍｍ、通称容量５００ｍｌである。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below along the examples with reference to the drawings.
FIG. 1 is a front view showing an embodiment of the synthetic resin casing of the present invention. This casing 1 is a biaxially stretched blow-molded product made of PET resin, and is a round casing having a mouth tube part 2, a shoulder part 3, a cylindrical body part 4, and a bottom part 5. The overall height is 206 mm, commonly known as The capacity is 500 ml.

胴部４の中央やや上の高さ位置と下端には、周リブとしての機能を発揮する突条周リブ１０ａ、１０ｂが形成されており、これら上下の突条周リブ１０ａ、１０ｂで挟さまれる高さ範囲では、円筒状の周壁に周方向に縦長矩形状の６ケの減圧吸収パネル７が並列状に段部８でその周囲を囲うようにして陥没形成され、そして隣接する減圧吸収パネル７の間には壜体１の剛性や座屈強度を担う６ケの柱部６が縦方向に残存形成されており、図２に示されるようにその平断面形状は６角形状となっている。   At the height position and the lower end of the trunk 4 slightly above the center, ridge circumferential ribs 10a and 10b that function as circumferential ribs are formed, and are sandwiched between the upper and lower ridge circumferential ribs 10a and 10b. In the range of the height, six vacuum absorption panels 7 having a vertically long rectangular shape in the circumferential direction are formed on the cylindrical peripheral wall so as to be surrounded by a stepped portion 8 in parallel. 7, six column portions 6 that bear the rigidity and buckling strength of the housing 1 are left and formed in the vertical direction, and the flat cross-sectional shape is hexagonal as shown in FIG. 2. Yes.

図３は上記実施例の壜体１の柱部６と減圧吸収パネル７の壜体１の中心軸ＣＸの方向に対する傾斜角度を説明するためのものである。
この図３では、図1及び図２中の、Ｂ−Ｂ線に沿った縦断面での柱部６の左右中心線ＣＬ１を太い実線で、Ｃ−Ｃ線に沿った縦断面での減圧吸収パネル７の左右中心線ＣＬ２で示している。（なお、本図は横方向を拡大して柱部６と減圧吸収パネル７の傾斜角度の違いが分かるように記載している。） FIG. 3 is a view for explaining an inclination angle with respect to the direction of the central axis CX of the case 1 of the case 1 of the case 1 and the vacuum absorbing panel 7 of the case 1.
In FIG. 3, the left and right center line CL1 of the column part 6 in the longitudinal section along the line BB in FIGS. 1 and 2 is a thick solid line, and the reduced pressure absorption in the longitudinal section along the line CC. The left and right center line CL2 of the panel 7 is shown. (In this figure, the horizontal direction is enlarged so that the difference in inclination angle between the column portion 6 and the reduced pressure absorption panel 7 can be understood.)

ここで、柱部６の左右中心線ＣＬ１は壜体１の中心軸ＣＸの方向に対して、下方外側斜め方向に、傾斜角度Ｔ１で傾斜している。
なお、図中（Ｃａ）で示す細い一点鎖線は、傾斜角度を決めるために中心軸ＣＸに平行に描いた線である。
また、減圧吸収パネル７の左右中心線ＣＬ２は壜体１の中心軸ＣＸの方向に対して、下方外側斜め方向に、傾斜角度Ｔ２で傾斜しており、傾斜角度Ｔ２＞傾斜角度Ｔ１となっている点が特徴的である。 Here, the left-right center line CL1 of the column part 6 is inclined at an inclination angle T1 in a downward outer diagonal direction with respect to the direction of the central axis CX of the housing 1.
In addition, the thin dashed-dotted line shown by (Ca) in the figure is a line drawn in parallel to the central axis CX in order to determine the inclination angle.
Further, the left-right center line CL2 of the reduced pressure absorption panel 7 is inclined at an inclination angle T2 in a downward outer diagonal direction with respect to the direction of the central axis CX of the housing 1, and the inclination angle T2> the inclination angle T1. This is characteristic.

次に、本発明の壜体の作用効果を確認するために、柱部６の傾斜角度Ｔ１は１°と一定にして、減圧吸収パネル７の傾斜角度Ｔ２を変えた次の３種の壜体（実施例１、実施例２、比較例）を用意した。
・実施例１の壜体；傾斜角度Ｔ２を１．５°とし、減圧吸収パネル７の柱部６に対する傾斜角度を０．５°とする。
・実施例２の壜体；傾斜角度Ｔ２を２．０°とし、減圧吸収パネル７の柱部６に対する傾斜角度を１°とする。
・比較例の壜体 ；傾斜角度Ｔ２を１°とする。
ここで、この比較例の壜体は従来の壜体のように柱部６と減圧吸収パネル７を平行としたものである。 Next, in order to confirm the operational effects of the housing of the present invention, the following three types of housings in which the inclination angle T1 of the column portion 6 is kept constant at 1 ° and the inclination angle T2 of the vacuum absorbing panel 7 is changed. (Example 1, Example 2, Comparative Example) were prepared.
-Housing of Example 1: The inclination angle T2 is set to 1.5 °, and the inclination angle with respect to the column portion 6 of the reduced pressure absorption panel 7 is set to 0.5 °.
-Housing of Example 2: The inclination angle T2 is set to 2.0 °, and the inclination angle with respect to the column portion 6 of the reduced pressure absorption panel 7 is set to 1 °.
The case of the comparative example: The inclination angle T2 is 1 °.
Here, the casing of this comparative example is such that the column portion 6 and the reduced pressure absorption panel 7 are parallel to each other like a conventional casing.

そして、上記３種の壜体について下記のような座屈試験と減圧吸収機能に係る減圧吸収容量測定試験を実施した。
（１）座屈試験
壜体に水を充填し、キャップで密閉した状態で、起立状態の壜体を縦方向に押圧し、壜体が座屈した時点での荷重を測定する。
（２）減圧吸収容量測定試験
測定する壜体に水を満量充填し、その口部にゴム栓付ビューレットを装着し、真空ポンプを作動させ、マノメータで０．４ｋＰａ／秒のスピードで減圧し、壜体が、局部的な陥没変形や座屈変形等の不正変形した時の減圧度を読んで減圧強度とし、同時にテスト前後のビューレットの値差から減圧吸収容量を算出する。 And the following buckling tests and the reduced pressure absorption capacity measurement test concerning a reduced pressure absorption function were implemented about said 3 types of housings.
(1) Buckling test With the casing filled with water and sealed with a cap, the standing casing is pressed in the vertical direction, and the load when the casing is buckled is measured.
(2) Decompression absorption capacity measurement test Fill the housing to be measured with a full amount of water, attach a burette with a rubber stopper to the mouth, operate the vacuum pump, and depressurize at a speed of 0.4 kPa / sec with a manometer. Then, the degree of decompression when the casing is deformed illegally such as local depression deformation or buckling deformation is read as the decompression intensity, and at the same time, the decompression absorption capacity is calculated from the value difference of the burette before and after the test.

上記試験の結果は次のようであった。
（１）座屈強度
・実施例１の壜体；２０３Ｎ
・実施例２の壜体；２１３Ｎ
・比較例の壜体 ；１８２Ｎ The results of the above test were as follows.
(1) Buckling strength / frame of Example 1; 203N
-Housing of Example 2; 213N
・ Comparative body: 182N

（２）減圧吸収容量測定試験
図４は減圧吸収容量測定試験の試験結果を、縦軸を減圧度（ｍｍＨｇ）、横軸を吸収容量（ｍｌ）にしてグラフとしたものであり、実施例１の壜体、実施例２の壜体、比較例の壜体の結果をそれぞれ、Ｔｅｓｔ１、Ｔｅｓｔ２、Ｔｅｓｔ３の線で示している。
そして、最終的に不正変形した点、図中、Ｓ１、Ｓ２、Ｓ３で示した点における減圧度と減圧吸収容量は次のようであった。
・実施例１の壜体；１５．６ｋＰａ、２５．４ｍｌ
・実施例２の壜体；１７．０ｋＰａ、２６．８ｍｌ
・比較例の壜体 ；１４．５ｋＰａ、２４．５ｍｌ (2) Vacuum absorption capacity measurement test FIG. 4 is a graph showing the test results of the vacuum absorption capacity measurement test, with the vertical axis representing the degree of vacuum (mmHg) and the horizontal axis representing the absorption capacity (ml). The results of the chassis of Example 2, the chassis of Example 2, and the chassis of the comparative example are shown by lines of Test1, Test2, and Test3, respectively.
And the degree of decompression and the decompression absorption capacity at the point where it was finally illegally deformed, the points indicated by S1, S2 and S3 in the figure were as follows.
-Housing of Example 1; 15.6 kPa, 25.4 ml
-Housing of Example 2; 17.0 kPa, 26.8 ml
・ Comparative body: 14.5 kPa, 24.5 ml

上記結果から、本発明の構成によれば、特に減圧吸収パネル７を柱部６の方向に対して下方外側斜め方向に傾斜するように構成することにより、上記実施例１の壜体のように、その傾斜角度が０．５°程度の僅かな角度でも減圧吸収機能が確実に向上すると共に、壜体の縦方向の座屈強度が大きくなることが確認された。   From the above results, according to the configuration of the present invention, the reduced-pressure absorption panel 7 is configured to be inclined in the diagonally downward outer direction with respect to the direction of the column part 6, so It was confirmed that even when the inclination angle is as small as about 0.5 °, the reduced pressure absorption function is improved and the longitudinal buckling strength of the casing is increased.

また、実施例２の壜体のように、さらにその傾斜角度を大きくして１°とすると、さらに、減圧吸収機能を向上させることができると共に、座屈強度を大きくすることができる。
そして、図１示されるように外観デザインの点から減圧吸収パネル７の形成領域を胴部の下方に限定するものであっても、減圧吸収パネルを傾斜させることにより、減圧吸収機能を向上させることができ、デザイン上の制約による減圧吸収機能を低下を補完することができる。 Moreover, when the inclination angle is further increased to 1 ° as in the case of the second embodiment, the reduced pressure absorption function can be further improved and the buckling strength can be increased.
And even if the formation region of the reduced pressure absorption panel 7 is limited to the lower part of the body part from the point of appearance design as shown in FIG. 1, the reduced pressure absorption function is improved by inclining the reduced pressure absorption panel. It can compensate for the reduced pressure absorption function due to design constraints.

そしてまた、通常減圧吸収パネルの面積を大きくしたり、減圧吸収パネルを変形し易くすることにより減圧吸収機能を大きくしようとすると、その分、縦方向の座屈強度が低下するが、本発明の壜体にあっては、座屈強度を損なうことなく、むしろ大きくしながら減圧吸収機能を向上させることができる点が特徴的である。   In addition, if the vacuum absorption function is increased by increasing the area of the normal vacuum absorption panel or making the vacuum absorption panel easier to deform, the longitudinal buckling strength is reduced accordingly. The case is characterized in that the reduced pressure absorption function can be improved while increasing the size without impairing the buckling strength.

以上、実施例に沿って本願発明の実施の形態とその作用効果について説明したが、本願の実施の形態はこの実施例に限定されるものではない。
上記実施例では、ＰＥＴ樹脂製の５００ｍｌの丸型壜体の例を示したが、本願発明の作用効果は他の合成樹脂製のもの、他の容量の壜体についてもその作用効果が十分発揮されるものである。 As mentioned above, although embodiment of this invention and its effect were demonstrated along the Example, embodiment of this application is not limited to this Example.
In the above embodiment, an example of a 500 ml round casing made of PET resin was shown. However, the function and effect of the present invention are sufficiently exerted even for other synthetic resin casings and other capacity casings. It is what is done.

また、上記実施例では減圧吸収パネル７の柱部６に対する傾斜角度を０．５°あるいは１°とした例を示したが、本発明の基本的な技術思想は減圧吸収パネル７を柱部６に対して傾斜させる点にあり、減圧吸収機能及び縦方向の座屈強度に係る改良効果、壜体の外観、横方向の座屈強度、ライン適性、成形性等を考慮しながら、この傾斜角度をさらに大きくすることもできる。   In the above embodiment, the inclination angle of the reduced pressure absorption panel 7 with respect to the column portion 6 is set to 0.5 ° or 1 °. However, the basic technical idea of the present invention is to apply the reduced pressure absorption panel 7 to the column portion 6. This tilt angle is considered in consideration of the improvement effect on the vacuum absorption function and the longitudinal buckling strength, the appearance of the housing, the lateral buckling strength, the line suitability, the formability, etc. Can be further increased.

以上説明したように、本発明の合成樹脂製壜体は減圧吸収パネルによる減圧吸収機能を向上すると共に壜体全体の座屈強度を大きくしたものであり、高温充填工程を要する製品分野での幅広い使用展開が期待される。   As described above, the synthetic resin casing of the present invention improves the vacuum absorbing function of the vacuum absorbing panel and increases the buckling strength of the entire casing, and is widely used in product fields that require a high-temperature filling process. Usage expansion is expected.

本発明の合成樹脂製壜体の一実施例の正面図である。It is a front view of one Example of the synthetic resin casings of the present invention. 図１のＡ−Ａ線に沿った平断面図である。It is a plane sectional view along the AA line of FIG. （ａ）は図２中のＢ−Ｂ線に沿った縦断面での柱部の左右中心線の、（ｂ）は図２中のＣ−Ｃ線に沿った縦断面での減圧吸収パネルの左右中心線の壜体の中心軸に対する傾斜角度を示す説明図である。(A) is the left-right center line of the column part in the longitudinal cross section along the BB line in FIG. 2, (b) is the pressure reduction absorption panel in the longitudinal cross section along the CC line in FIG. It is explanatory drawing which shows the inclination-angle with respect to the central axis of the housing of a left-right centerline. 減圧吸収容量測定試験の試験結果を示すグラフである。It is a graph which shows the test result of a decompression absorption capacity measurement test.

符号の説明Explanation of symbols

１ ；壜体
２ ；口筒部
３ ；肩部
４ ；胴部
５ ；底部
６ ；柱部
７ ；減圧吸収パネル
８ ；段部
１０ａ、１０ｂ；突条周リブ
Ｔ１；（柱部の）傾斜角度
Ｔ２；（減圧吸収パネルの）傾斜角度
ＣＸ；中心軸
ＣＬ１；（柱部の）左右中心線
ＣＬ２；（減圧吸収パネルの）左右中心線 DESCRIPTION OF SYMBOLS 1; Housing 2; Mouth part 3; Shoulder part 4; Trunk part 5; Bottom part 6; Column part 7; Depressurization absorption panel 8; Step part 10a, 10b; T2; inclination angle CX (of the vacuum absorption panel); central axis CL1; left and right center line CL2 (of the column); left and right center line (of the vacuum absorption panel)

Claims (2)

円筒状の胴部(4)の中央の高さ位置よりも上の高さ位置及び下の高さ位置に等しい径寸法を有して周設された上下の突状周リブ（10a，10b）と、該上下の突状周リブ（10a，10b）で挟まれる所定の高さ範囲内に、周方向に一定の幅寸法を有して並列状に配置され且つ段部(8)でその周囲を囲うように陥没形成した複数の減圧吸収パネル(7)と、隣接する減圧吸収パネル(7)間に縦方向に残存形成した柱部(6)と、を備えた丸型壜体であって、
前記柱部(6)の左右中心線(CL1)の方向が、壜体の中心軸(CX)の方向に対して平行、若しくは下方外側斜め方向に傾斜し、前記上の突状周リブ（10a）側の段部(8)を前記下の突状周リブ（10b）側の段部(8)よりも大きな深さ寸法で形成することにより、前記減圧吸収パネル(7)の左右中心線(CL2)の方向が、前記柱部(6)の左右中心線(CL1)の方向よりもさらに下方外側斜め方向に傾斜するよう構成したことを特徴とする合成樹脂製丸型壜体。 Upper and lower projecting circumferential ribs (10a, 10b) with a diameter equal to the height position above and below the center height position of the cylindrical body (4 ). If its in projecting circumferential ribs under the upper (10a, 10b) within a height range where the constant sandwiched by, arranged in parallel form having a constant width dimension in the circumferential direction and the stepped portion (8) a plurality of vacuum panels that depressed formed so as to surround the periphery (7), adjacent contact vacuum panels (7) column portion remaining formed longitudinally between the (6), met round the bottle with a And
The direction of the left and right center line (CL1) of the column portion (6) is parallel to the direction of the center axis (CX) of the housing or inclined downward and obliquely outward, and the upper protruding peripheral rib (10a ) Side step portion (8) with a larger depth than the stepped portion (8) on the lower projecting peripheral rib (10b) side, the left and right centerlines (7) of the vacuum absorbing panel (7) ( A synthetic resin round casing characterized in that the direction of CL2) is inclined further obliquely outward and downward from the direction of the left and right center line (CL1) of the pillar portion (6). 柱部(6)の壜体の中心軸(CX)の方向に対する傾斜角度(T1)を０°〜２°の範囲とし、減圧吸収パネル(7)の壜体の中心軸(CX)の方向に対する傾斜角度(T2)を、傾斜角度(T1)＋０．５°〜傾斜角度(T1)＋２°の範囲とした請求項１記載の合成樹脂製丸型壜体。 The inclination angle ( T1 ) of the column (6) with respect to the direction of the central axis (CX) of the frame is in the range of 0 ° to 2 °, and the direction of the central axis (CX) of the vacuum absorption panel (7) The synthetic resin round casing according to claim 1, wherein the tilt angle (T2) is in the range of tilt angle (T1) + 0.5 ° to tilt angle (T1) + 2 °.
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