JP2008247409A - Synthetic resin container - Google Patents

Synthetic resin container Download PDF

Info

Publication number
JP2008247409A
JP2008247409A JP2007088852A JP2007088852A JP2008247409A JP 2008247409 A JP2008247409 A JP 2008247409A JP 2007088852 A JP2007088852 A JP 2007088852A JP 2007088852 A JP2007088852 A JP 2007088852A JP 2008247409 A JP2008247409 A JP 2008247409A
Authority
JP
Japan
Prior art keywords
panel
panel portion
center
deeper
depth
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.)
Granted
Application number
JP2007088852A
Other languages
Japanese (ja)
Other versions
JP4842188B2 (en
Inventor
Toyoji Kato
豊治 加藤
Masato Nakamura
正人 中村
Hiromichi Saito
浩通 斉藤
Takao Iizuka
高雄 飯塚
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 JP2007088852A priority Critical patent/JP4842188B2/en
Publication of JP2008247409A publication Critical patent/JP2008247409A/en
Application granted granted Critical
Publication of JP4842188B2 publication Critical patent/JP4842188B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a synthetic resin container in which some corrugations formed at a pressure reducing and absorbing panel are made thick at their walls, other remaining portions are made thin at their walls to restrict a bulging-out state of the container at the time of filling while the entire strength of the pressure reducing and absorbing panel is being prevented from being decreased and a volumetric variation generated through its cooling after filling operation is absorbed. <P>SOLUTION: A bottle 1 has a pressure reducing and absorbing panel 10 with a part of a long-side wall W1 being concave inwardly, wherein the panel 10 includes a center panel 11 deeper than the wall W1, two side panels 12, 13 deeper than that of the center panel 11 and extending in the direction of the axis O, an upper panel 14 deeper than those of the side panels 12, 13 and extending along the two side panels 12, 13, and a core panel 15 deeper than those of the side panels 12, 13, extending along the two side panels 12, 13 and having the same depth as that of the upper panel 14 or a depth different from that of the upper panel 14. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、周壁の一部を内側に窪ませた減圧吸収パネルを有する合成樹脂製容器に関するものである。   The present invention relates to a synthetic resin container having a vacuum absorbing panel in which a part of a peripheral wall is recessed inward.

ＰＥＴボトルに代表される合成樹脂製容器は、内容物が果汁飲料やお茶等のように加熱状態で充填されると、充填時には一旦膨らむが、内容物が冷却されるに従って内圧が減少するため、体積の減少を伴う変形を生じてしまうという問題がある。   Synthetic resin containers typified by PET bottles, when the contents are filled in a heated state such as fruit juice drinks or tea, will swell once during filling, but the internal pressure decreases as the contents are cooled, There is a problem that deformation accompanied by a decrease in volume occurs.

これに対し、従来の合成樹脂製容器には、その周壁の一部を内側に窪ませて減圧吸収パネルとし、更に、この減圧吸収パネルに、周方向に間隔を空けて２つの凹状の縦リブを形成すると共に、当該縦リブ間の壁面を外方に膨出させたものがある（例えば、特許文献１参照。）。
特許第３８２６８３０号明細書 On the other hand, in a conventional synthetic resin container, a part of the peripheral wall is recessed inward to form a reduced pressure absorption panel. Further, the reduced pressure absorption panel has two concave vertical ribs spaced in the circumferential direction. And the wall surface between the vertical ribs bulge outward (see, for example, Patent Document 1).
Japanese Patent No. 3826830

しかしながら、容器を成形するにあたっては、凹凸形状部分が厚肉となり易いことに起因して、その周辺部分などに薄肉となる部分が生じてしまい、機械的強度の低下を招くという問題が生じる。   However, when the container is formed, the uneven portion tends to be thick, resulting in a thin portion in the peripheral portion and the like, which causes a problem that mechanical strength is reduced.

また、減圧吸収パネルにおいては凹凸が存在すると、前記肉厚の影響により、パネル挙動が不安定になったり、良好な減圧吸収能が発揮されなくなるといった問題が生じるおそれがある。   Further, if there are irregularities in the vacuum absorbing panel, there is a possibility that the panel behavior becomes unstable due to the influence of the wall thickness, or that the good vacuum absorbing ability cannot be exhibited.

上記したような問題は、容器の軽量化等を図ろうとする場合に顕著に現れてしまうという問題がある。   There is a problem that the above-described problem appears remarkably when trying to reduce the weight of the container.

さらに、本願発明者は、減圧吸収パネルの中心部分では、内圧の減少に伴う変形が起き易く、特に正面視長方形状の減圧吸収パネルにおいては、周壁の軸線に沿った変形が起き易いことを認識するに至った。   Further, the inventor of the present application recognizes that the central portion of the vacuum absorbing panel is likely to be deformed as the internal pressure is decreased, and that the rectangular vacuum decompressing panel is particularly likely to be deformed along the axis of the peripheral wall. It came to do.

本発明の解決すべき課題は、減圧吸収パネルに凹凸部分を形成するにあたり、当該凹凸部分が厚肉になる一方でその他の部分に薄肉部を生じることで減圧吸収パネル全体としての機能が発揮されなくなることにあり、その目的とするところは、減圧吸収パネルの機能を低下させることなく、充填時に生じる膨らみを抑制し、充填後の冷却により生じる体積変化を吸収する合成樹脂製容器を提供することにある。   The problem to be solved by the present invention is that, when forming a concavo-convex portion in a vacuum absorbing panel, the concavo-convex portion becomes thick, while the thin portion is formed in the other portion, so that the function of the entire vacuum absorbing panel is exhibited. The purpose of the present invention is to provide a synthetic resin container that suppresses the swelling generated during filling without absorbing the function of the vacuum absorption panel and absorbs the volume change caused by cooling after filling. It is in.

本発明は、周壁の一部を内側に窪ませた減圧吸収パネルを有する合成樹脂製容器であって、前記減圧吸収パネルが、当該減圧吸収パネルの中心付近に配置されその深さが周壁よりも深いセンターパネル部と、このセンターパネルの両側に配置されその深さが当該センターパネル部よりも深く周壁の軸方向に沿って延在する２つのサイドパネル部と、センターパネル部の上側に配置されその深さがサイドパネル部よりも深く２つのサイドパネル部に沿って延在するアッパーパネル部と、センターパネル部の下側に配置されその深さがサイドパネル部よりも深く２つのサイドパネル部に沿って延在するロアパネル部とからなることを特徴とするものである。   The present invention is a synthetic resin container having a vacuum absorption panel in which a part of the peripheral wall is recessed inward, wherein the vacuum absorption panel is disposed near the center of the vacuum absorption panel and the depth thereof is greater than that of the peripheral wall. A deep center panel portion, two side panel portions disposed on both sides of the center panel and having a depth deeper than the center panel portion and extending along the axial direction of the peripheral wall, and disposed above the center panel portion. The upper panel part that is deeper than the side panel part and extends along the two side panel parts, and the two side panel parts that are arranged below the center panel part and deeper than the side panel part And a lower panel portion extending along the line.

本発明に係る周壁には、円筒形や多角柱形のものが挙げられる。また、減圧吸収パネルの形状には、楕円形状や多角形状のものが挙げられる。   Examples of the peripheral wall according to the present invention include a cylindrical shape and a polygonal column shape. In addition, the shape of the vacuum absorbing panel may be an elliptical shape or a polygonal shape.

本発明によれば、アッパーパネル部とロアパネル部との深さは適宜変更することができる。即ち、本発明によれば、アッパーパネル部とロアパネル部との深さに差をつけて、周壁に対する深さを変えても、アッパーパネル部とロアパネル部とを同一の深さにして、周壁に対する深さを同一にすることも可能である。   According to this invention, the depth of an upper panel part and a lower panel part can be changed suitably. That is, according to the present invention, even if the depth between the upper panel portion and the lower panel portion is changed and the depth with respect to the peripheral wall is changed, the upper panel portion and the lower panel portion are made to have the same depth to the peripheral wall. It is also possible to have the same depth.

また、２つのサイドパネル部も、周壁の軸方向に沿って延在する部分が存在すれば、軸方向に沿って互いに平行な独立したものは勿論、互いに対応する上端及び下端を繋いでアッパーパネル部、センターパネル部及びロアパネル部を、環状に取り囲む形状としてもよい。   In addition, if the two side panel portions also have a portion extending along the axial direction of the peripheral wall, the upper panel connects the corresponding upper and lower ends as well as independent ones parallel to each other along the axial direction. It is good also as a shape which encloses a part, a center panel part, and a lower panel part cyclically | annularly.

本発明によれば、その減圧吸収パネルが２つのサイドパネル部に挟まれたアッパーパネル部、センターパネル部及びロアパネル部の計５つに分けられ、センターパネル部がサイドパネル部に対して突出する一方で、アッパーパネル部及びロアパネル部がサイドパネル部に対して窪んだ形状となるため、２つのサイドパネル部が減圧吸収パネルの軸方向に対する強度（柱強度）を高める一方、２つのサイドパネル部の間に存在するアッパーパネル部及びロアパネル部を深くすることで、減圧吸収パネルの上側及び／又は下側での剛性が上がることにより、減圧吸収パネルの中で最も動き易い中心部分に存在するセンターパネル部での動きが抑制されることから、減圧吸収パネルの強度を低下させることなく、良好な変形挙動を示し、効果的に充填時に生じる膨らみを抑制し、充填後の冷却により生じる体積変化を吸収することができる。   According to the present invention, the reduced pressure absorption panel is divided into a total of five parts, an upper panel part, a center panel part, and a lower panel part sandwiched between two side panel parts, and the center panel part protrudes from the side panel part. On the other hand, since the upper panel portion and the lower panel portion are recessed with respect to the side panel portion, the two side panel portions increase the strength (column strength) in the axial direction of the vacuum absorbing panel, while the two side panel portions By deepening the upper panel portion and the lower panel portion existing between the two, the rigidity on the upper side and / or the lower side of the vacuum absorption panel is increased, so that the center existing in the central part that is most movable in the vacuum absorption panel is present. Since the movement in the panel part is suppressed, it shows good deformation behavior and effectively fills without reducing the strength of the vacuum absorption panel. Bulge and suppression occurs sometimes can absorb the volume change caused by cooling after filling.

また、本発明によれば、減圧吸収パネルに形成した凹凸形状に起因する急激な肉厚変化を抑制することが可能となり、さらに、本発明によれば、減圧吸収パネル全体が良好な肉厚分布となる為、不均一な変形を防止することができる。   In addition, according to the present invention, it is possible to suppress a sudden change in thickness due to the uneven shape formed in the reduced pressure absorption panel. Further, according to the present invention, the entire reduced pressure absorption panel has a good thickness distribution. Therefore, nonuniform deformation can be prevented.

また、本発明によれば、アッパーパネル部とロアパネル部との深さは適宜変更することができる。   Further, according to the present invention, the depths of the upper panel portion and the lower panel portion can be appropriately changed.

例えば、減圧吸収パネルの上側と下側とのうち、内圧の減少に伴う変形量が異なる場合、その変形量が大きい側のアッパーパネル部又はロアパネル部の深さが他方のパネル部よりも深くなるように、言い換えれば、変形量が大きい側のアッパーパネル部又はロアパネル部が周壁に対して一番深くなるように設定する。   For example, when the deformation amount due to the decrease in internal pressure is different between the upper side and the lower side of the reduced pressure absorption panel, the depth of the upper panel portion or the lower panel portion on the side with the larger deformation amount becomes deeper than the other panel portion. In other words, in other words, the upper panel portion or the lower panel portion on the side with the larger deformation amount is set to be deepest with respect to the peripheral wall.

具体例としては、周壁における減圧吸収パネルの上側又は下側に、環状の凹部としてなるウエスト部が形成される場合、当該ウエスト部が形成される側のアッパーパネル部又はロアパネル部の深さが周壁に対して一番深くなるように設定する。   As a specific example, when a waist part as an annular recess is formed on the upper side or the lower side of the vacuum absorption panel in the peripheral wall, the depth of the upper panel part or the lower panel part on the side where the waist part is formed is the peripheral wall. Set to be deepest against.

このように、減圧吸収パネルの上側と下側とで内圧の減少に伴う変形量が異なる場合、当該変形量の大きな側の深さが最も深くなるように調整してアッパーパネル部とロアパネル部との深さに差をつければ、減圧吸収パネルの強度を低下させることなく、減圧吸収パネルの上側と下側とで生じる変形量をバランスよく調整することができる。   In this way, when the deformation amount due to the decrease in internal pressure is different between the upper side and the lower side of the reduced pressure absorption panel, the upper panel portion and the lower panel portion are adjusted so that the depth on the larger deformation amount side becomes the deepest. If the depth is made different, the amount of deformation generated on the upper side and the lower side of the reduced pressure absorption panel can be adjusted in a well-balanced manner without reducing the strength of the reduced pressure absorption panel.

しかしながら、減圧吸収パネルの上側、下側において、内圧の減少に伴う変形量が大きくなる現象は、必ずしもウエスト部が存在していることだけに依存するものではない。   However, the phenomenon in which the amount of deformation associated with the decrease in the internal pressure increases on the upper and lower sides of the reduced pressure absorption panel does not necessarily depend only on the presence of the waist portion.

これに対し、本発明によれば、ウエスト部の存在以外に起因した容器の形状等により減圧吸収パネルの上側と下側とで内圧の減少に伴う変形量が異なる場合も、アッパーパネル部とロアパネル部との深さを適宜調整して当該深さに差をつければ、減圧吸収パネルの上側と下側とで生じる変形量を均等にすることができる。   On the other hand, according to the present invention, the upper panel portion and the lower panel can be used even when the deformation amount due to the decrease in the internal pressure is different between the upper side and the lower side of the vacuum absorbing panel due to the shape of the container other than the presence of the waist portion. If the depth with the portion is appropriately adjusted to make a difference in the depth, the amount of deformation generated between the upper side and the lower side of the reduced pressure absorption panel can be made uniform.

また、本発明によれば、減圧吸収パネルの上側と下側とで内圧の減少に伴う変形量が等しい場合、アッパーパネル部とロアパネル部との深さを同一にして、周壁に対する深さを同一にすることも可能である。   Further, according to the present invention, when the amount of deformation accompanying the decrease in the internal pressure is the same on the upper side and the lower side of the reduced pressure absorption panel, the depth of the upper panel portion and the lower panel portion is the same, and the depth to the peripheral wall is the same. It is also possible to make it.

以下、図面を参照して、本発明の一形態を詳細に説明する。   Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

図１は、本発明の一形態であるＰＥＴボトル（以下、「ボトル」という）１を示す正面図であり、図２(a)〜(c)にはそれぞれ、図１のＡ−Ａ断面図、Ｂ−Ｂ断面図及びＣ−Ｃ断面図を示す。更に、図３(a),(b)はそれぞれ、図１に示す減圧吸収パネル10を拡大して示す斜視図及び同図(b)のＹ−Ｙ断面図である。   FIG. 1 is a front view showing a PET bottle (hereinafter referred to as “bottle”) 1 according to an embodiment of the present invention. FIGS. 2 (a) to 2 (c) are cross-sectional views taken along line AA in FIG. , BB sectional drawing and CC sectional drawing are shown. 3 (a) and 3 (b) are an enlarged perspective view of the vacuum absorbing panel 10 shown in FIG. 1 and a YY sectional view of FIG. 3 (b).

ボトル１は、ＰＥＴ（ポリエチレンテレフタレート）樹脂からなるプリフォームを二軸延伸ブロー成形してなり、図２に示すように、その横断面が長辺壁W1と短辺壁W2とを交互に配したほぼ八角形をなす周壁を有し、その一方が内容物の充填及び注出を行う口部1aを構成し、その他方が周壁の内側を閉じる環状の接地面を有する底部1bを構成する。   The bottle 1 is formed by performing a biaxial stretch blow molding of a preform made of a PET (polyethylene terephthalate) resin, and as shown in FIG. 2, the cross section is alternately arranged with long side walls W1 and short side walls W2. A peripheral wall having a substantially octagonal shape, one of which constitutes a mouth portion 1a for filling and pouring the contents, and the other one constitutes a bottom portion 1b having an annular ground surface that closes the inside of the peripheral wall.

更に、周壁は、口部1aから軸線Ｏに沿って底部1bに向かうに従って拡大する肩部1cと、この肩部1cの拡大が最大となる稜線Ｌから軸線Ｏに沿って平行に延在する胴部1dとを構成し、胴部1dには、環状の凹部としてなるウエスト部1wが形成されている。   Further, the peripheral wall has a shoulder portion 1c that expands from the mouth portion 1a toward the bottom portion 1b along the axis O, and a body that extends in parallel along the axis O from the ridge line L where the expansion of the shoulder portion 1c is maximized. A waist portion 1w is formed as an annular recess in the body portion 1d.

ウエスト部1wで区切られた胴部1dのうち、口部1a側の胴部1dには、互いに対向する４つの長辺壁W1にそれぞれ、その一部を内側（軸線Ｏ側）に窪ませて減圧吸収パネル10が形成されている。   Of the body part 1d divided by the waist part 1w, the body part 1d on the mouth part 1a side is recessed inwardly on the four long side walls W1 facing each other (axis O side). A vacuum absorbing panel 10 is formed.

減圧吸収パネル10は、図１に示すように、当該減圧吸収パネル10の中心付近に配置されるセンターパネル部11と、このセンターパネル11の両側に配置される２つのサイドパネル部12,13と、センターパネル部11の上側に配置されるアッパーパネル部14と、センターパネル11の下側に配置されるロアパネル部15とからなり、軸線Ｏに沿って延在する縦長矩形のパネルである。   As shown in FIG. 1, the reduced pressure absorption panel 10 includes a center panel portion 11 disposed near the center of the reduced pressure absorption panel 10 and two side panel portions 12, 13 disposed on both sides of the center panel 11. The upper panel portion 14 disposed on the upper side of the center panel portion 11 and the lower panel portion 15 disposed on the lower side of the center panel 11 are vertically long rectangular panels extending along the axis O.

詳細には、センターパネル部11は、矩形の平坦なプレート状をしてなり、図3(b)に示すように、その深さが長辺壁W1よりもD1だけ深くなっている。   Specifically, the center panel portion 11 has a rectangular flat plate shape, and the depth is deeper by D1 than the long side wall W1 as shown in FIG. 3 (b).

サイドパネル部12,13はそれぞれ、図２に示すように、その深さが同等であって、長辺壁W1よりもD2(w)だけ深くなると共に、図2(b)に示すように、センターパネル部11よりもD2(11)だけ深くなり、図１や図３に示すように、軸線Ｏ方向に沿って延在している。なお、図２においては、４つの減圧吸収パネル10のうちの、１つのみに対して例示的に、符号を詳細に付している。   As shown in FIG. 2, each of the side panel portions 12 and 13 has the same depth, and becomes deeper by D2 (w) than the long side wall W1, and as shown in FIG. It is deeper by D2 (11) than the center panel portion 11, and extends along the direction of the axis O as shown in FIGS. In FIG. 2, only one of the four vacuum absorption panels 10 is exemplarily shown in detail with reference numerals.

アッパーパネル部14は、図3(b)に示すように、その深さが長辺壁W1よりもD4(w)だけ深くなると共に、図2(a)に示すように、サイドパネル部12,13よりもD4(12)だけ深くなり、図１や図3(a)に示すように、２つのサイドパネル部12,13に沿って延在している。   As shown in FIG. 3 (b), the upper panel portion 14 is deeper by D4 (w) than the long side wall W1, and as shown in FIG. 2 (a), the side panel portions 12, It is deeper than D13 by D4 (12), and extends along the two side panel portions 12, 13 as shown in FIG. 1 and FIG.

ロアパネル15は、図3(b)に示すように、その深さが長辺壁W1よりもD5(w)だけ深くなると共に、図2(c)に示すように、サイドパネル部12,13よりもD5(12)だけ深くなり、図１や図3(a)に示すように、２つのサイドパネル部12,13に沿って延在している。   As shown in FIG. 3 (b), the lower panel 15 is deeper than the long side wall W1 by D5 (w), and as shown in FIG. Is deepened only by D5 (12), and extends along the two side panel portions 12 and 13, as shown in FIG. 1 and FIG. 3 (a).

本形態に係るボトル１によれば、減圧吸収パネル10に形成した各パネル部11〜15により構成された凹凸形状に起因する急激な肉厚変化を抑制するとともに、２つのサイドパネル部12,13が減圧吸収パネル10の軸線Ｏ方向に対する強度（柱強度）を高める一方、２つのサイドパネル部12,13の間に存在するアッパーパネル部14及びロアパネル部15を深くすることで、減圧吸収パネル10の上側及び／又は下側での剛性が上がることにより、減圧吸収パネル10の中で最も動き易い中心部分に存在するセンターパネル部11での動きが抑制されることから、減圧吸収パネル10の強度を低下させることなく良好な変形挙動を示し、効果的に充填時に生じる膨らみを抑制し、充填後の冷却により生じる体積変化を吸収することができる。   According to the bottle 1 according to the present embodiment, the two side panel portions 12 and 13 are suppressed while suppressing a sudden change in thickness due to the uneven shape formed by the panel portions 11 to 15 formed in the vacuum absorbing panel 10. Increases the strength (column strength) of the vacuum absorption panel 10 in the direction of the axis O, while the upper panel portion 14 and the lower panel portion 15 existing between the two side panel portions 12 and 13 are deepened, thereby reducing the pressure absorption panel 10. As the rigidity on the upper side and / or the lower side of the pressure reducing panel 10 is increased, the movement of the center panel portion 11 existing in the central part that is most movable among the reduced pressure absorbing panel 10 is suppressed. Good deformation behavior can be exhibited without lowering the volume, effectively suppressing the bulging that occurs during filling, and absorbing volume changes caused by cooling after filling.

また、本形態に係るボトル１によれば、減圧吸収パネル10に形成した凹凸形状に起因する急激な肉厚変化を抑制することが可能となり、さらに、ボトル１によれば、減圧吸収パネル10全体が良好な肉厚分布となる為、不均一な変形を防止することができる。   Moreover, according to the bottle 1 which concerns on this form, it becomes possible to suppress the sudden thickness change resulting from the uneven | corrugated shape formed in the decompression absorption panel 10, Furthermore, according to the bottle 1, the decompression absorption panel 10 whole Since the thickness distribution is good, non-uniform deformation can be prevented.

そして、本形態にあっては更に、図3(b)に示すように、ウエスト部1wが形成される容器において、当該ウエスト部に近接するロアパネル部15の深さをアッパーパネル部14よりもΔDだけ深くすることで、ロアパネル部15が、長辺壁W1に対して一番深くなるように設定している。   Further, in the present embodiment, as shown in FIG. 3 (b), in the container in which the waist portion 1w is formed, the depth of the lower panel portion 15 adjacent to the waist portion is set to ΔD more than the upper panel portion 14. The lower panel portion 15 is set to be deepest with respect to the long side wall W1 by making it deeper.

これは、容器（ボトル）においては、当該容器の中央高さ部分に位置する部分が、容器内圧等の影響を大きく受けて最も動き易い一方で、減圧吸収パネルにおいては、当該パネルの中央高さ部分に位置する部分が、容器内圧等の影響を大きく受けて最も動き易いことから、容器の中央高さ部分にウエスト部を形成すると共に当該ウエスト部に近接する位置に減圧吸収パネルを設けた場合、この減圧吸収パネルにあっては、ウエスト部に近接する当該パネルの上側又は下側（本形態にあっては、ロアパネル部15が存在する下側）でも変形量が大きくなるためである。   In a container (bottle), the portion located at the central height portion of the container is most easily affected by the influence of the internal pressure of the container, while in the vacuum absorption panel, the central height of the panel is concerned. When the part located in the part is greatly affected by the internal pressure of the container and is most movable, the waist part is formed at the central height part of the container and the vacuum absorbing panel is provided at a position close to the waist part. This is because, in this reduced pressure absorption panel, the amount of deformation also increases on the upper side or the lower side of the panel close to the waist portion (the lower side where the lower panel portion 15 exists in this embodiment).

なお、この時、ロアパネル部15の長辺壁W1に対する深さD5(w)は、２〜３mmに設定することが好ましい。また、図3(b)において、符号D4(11)は、センターパネル部11に対するアッパーパネル部14の深さの差であり、また、符号D5(11)は、センターパネル部11に対するロアパネル部15の深さの差である。   At this time, the depth D5 (w) of the lower panel portion 15 with respect to the long side wall W1 is preferably set to 2 to 3 mm. In FIG. 3 (b), the symbol D4 (11) is the difference in the depth of the upper panel portion 14 with respect to the center panel portion 11, and the symbol D5 (11) is the lower panel portion 15 with respect to the center panel portion 11. Is the difference in depth.

このように、減圧吸収パネル10の上側と下側とで内圧の減少に伴う変形量が異なる場合、当該変形量の大きな側の深さ（本形態では、ウエスト部1w側にあるロアパネル部15の深さD5(w)が最も深くなるように調整してアッパーパネル部14とロアパネル部15との深さに差ΔDをつければ、減圧吸収パネル10の強度を低下させることなく、減圧吸収パネル10の上側と下側とで生じる変形量をバランスよく調整することができる。   As described above, when the deformation amount due to the decrease in the internal pressure is different between the upper side and the lower side of the reduced pressure absorption panel 10, the depth on the larger side of the deformation amount (in this embodiment, the lower panel portion 15 on the waist portion 1w side). If the depth D5 (w) is adjusted to be the deepest and a difference ΔD is added to the depth between the upper panel portion 14 and the lower panel portion 15, the reduced pressure absorption panel 10 is not reduced without reducing the strength of the reduced pressure absorption panel 10. The amount of deformation that occurs between the upper side and the lower side of can be adjusted in a balanced manner.

しかしながら、減圧吸収パネル10の上側、下側において、内圧の減少に伴う変形量が大きくなる現象は、本形態のように、必ずしもウエスト部1wが存在していることだけに依存するものではない。   However, the phenomenon that the deformation amount due to the decrease in the internal pressure increases on the upper side and the lower side of the reduced pressure absorption panel 10 does not necessarily depend only on the presence of the waist portion 1w as in the present embodiment.

これに対し、本発明によれば、ウエスト部1wの存在以外に起因した容器の形状等により減圧吸収パネル10の上側と下側とで内圧の減少に伴う変形量が異なる場合も、アッパーパネル部14とロアパネル部15との深さを適宜調整して当該深さに差をつければ、減圧吸収パネル10の上側と下側とで生じる変形量をバランスよく調整することができる。   On the other hand, according to the present invention, even when the amount of deformation due to the decrease in the internal pressure differs between the upper side and the lower side of the vacuum absorbing panel 10 due to the shape of the container other than the presence of the waist portion 1w, the upper panel portion By appropriately adjusting the depths of 14 and the lower panel portion 15 and making a difference between the depths, the amount of deformation generated between the upper side and the lower side of the vacuum absorbing panel 10 can be adjusted in a balanced manner.

また、本形態では、更に剛性を上げてウエスト部1wが形成される側のロアパネル部15の動きを抑制すべく、ロアパネル部15の表面積がアッパーパネル部14よりも小さくなるように設定している。但し、この関係についても、アッパーパネル部14とロアパネル部15との表面積が同一になることや、アッパーパネル部14の表面積がロアパネル部15よりも小さくなることを妨げるものではない。   Further, in this embodiment, the surface area of the lower panel portion 15 is set to be smaller than that of the upper panel portion 14 in order to further increase the rigidity and suppress the movement of the lower panel portion 15 on the side where the waist portion 1w is formed. . However, this relationship also does not prevent the surface areas of the upper panel portion 14 and the lower panel portion 15 from becoming the same, or the surface area of the upper panel portion 14 from becoming smaller than the lower panel portion 15.

なお、図４は、本発明の他の形態である、ボトル１の変形例を示す正面図であり、図１〜３と同一部分は、同一符号をもってその説明を省略する。   FIG. 4 is a front view showing a modified example of the bottle 1, which is another embodiment of the present invention, and the same parts as those in FIGS.

本形態では、２つのサイドパネル部12,13における、互いに対応する上端及び下端を繋いでアッパーパネル部14、センターパネル部11及びロアパネル部15を、長辺壁W1の正面からみて、環状に取り囲む形状となっている。   In the present embodiment, the upper panel portion 14, the center panel portion 11 and the lower panel portion 15 are annularly surrounded by connecting the upper and lower ends corresponding to each other in the two side panel portions 12 and 13, as viewed from the front of the long side wall W1. It has a shape.

上述したところは、本発明の好適な形態を示したものであるが、特許請求の範囲において、種々の変更を加えることができる。   The above description shows preferred forms of the present invention, but various modifications can be made within the scope of the claims.

例えば、本発明によれば、減圧吸収パネル10の上側と下側とで内圧の減少に伴う変形量が等しい場合、長辺壁W1に対するアッパーパネル部14とロアパネル部15との深さを同一 (D4(11)＝D5(11)、即ち、D4(w)＝D5(w))にすることも可能である。   For example, according to the present invention, the upper panel portion 14 and the lower panel portion 15 have the same depth with respect to the long side wall W1 when the amount of deformation accompanying the decrease in the internal pressure is the same between the upper side and the lower side of the vacuum absorbing panel 10. It is also possible to set D4 (11) = D5 (11), that is, D4 (w) = D5 (w)).

また、本発明に係る容器の形状も多角柱形状に制限されることなく、円筒形状等の、種々の形状を採用できる。更に、本発明によれば、ウエスト部を設けないボトルにも適用可能である。   Further, the shape of the container according to the present invention is not limited to the polygonal column shape, and various shapes such as a cylindrical shape can be adopted. Furthermore, according to this invention, it is applicable also to the bottle which does not provide a waist part.

本発明の一形態であるＰＥＴボトルを示す正面図である。It is a front view which shows the PET bottle which is one form of this invention. (a)〜(c)はそれぞれ、図１のＡ−Ａ断面図、Ｂ−Ｂ断面図及びＣ−Ｃ断面図である。(a)-(c) is respectively AA sectional drawing of FIG. 1, BB sectional drawing, and CC sectional drawing. (a),(b)はそれぞれ、図１に示す減圧吸収パネルを拡大して示す斜視図及び同図(b)のＹ−Ｙ断面図である。(a), (b) is each a perspective view which expands and shows the decompression absorption panel shown in FIG. 1, and YY sectional drawing of the same figure (b). 本発明の他の形態である、図１のボトルの変形例を示す正面図である。It is a front view which shows the modification of the bottle of FIG. 1 which is the other form of this invention.

符号の説明Explanation of symbols

１ ＰＥＴボトル（合成樹脂製容器）
1a 口部
1b 底部
1c 肩部
1d 胴部
1w ウエスト部
10 減圧吸収パネル
11 センターパネル部
12 サイドパネル部
13 サイドパネル部
14 アッパーパネル部
15 ロアパネル部
D1 長辺壁に対するセンターパネル部の深さ
D2(11) センターパネル部に対するサイドパネル部の深さ
D4(12) サイドパネル部に対するアッパーパネル部の深さ
D5(12) サイドパネル部に対するロアパネル部の深さ
W1 長辺壁
W2 短辺壁 1 PET bottle (synthetic resin container)
1a mouth
1b Bottom
1c shoulder
1d torso
1w waist
10 Vacuum absorption panel
11 Center panel
12 Side panel section
13 Side panel section
14 Upper panel
15 Lower panel section
D1 Depth of center panel relative to long side wall
D2 (11) Depth of side panel relative to center panel
D4 (12) Depth of upper panel relative to side panel
D5 (12) Depth of lower panel relative to side panel
W1 Long side wall
W2 short side wall

Claims (3)

周壁の一部を内側に窪ませた減圧吸収パネルを有する合成樹脂製容器であって、
前記減圧吸収パネルは、当該減圧吸収パネルの中心付近に配置されその深さが周壁よりも深いセンターパネル部と、このセンターパネルの両側に配置されその深さが当該センターパネル部よりも深く周壁の軸方向に沿って延在する２つのサイドパネル部と、センターパネル部の上側に配置されその深さがサイドパネル部よりも深く２つのサイドパネル部に沿って延在するアッパーパネル部と、センターパネル部の下側に配置されその深さがサイドパネル部よりも深く２つのサイドパネル部に沿って延在するロアパネル部とからなることを特徴とする合成樹脂製容器。 A synthetic resin container having a vacuum absorbing panel with a part of the peripheral wall recessed inside,
The vacuum absorbing panel is disposed near the center of the vacuum absorbing panel and has a center panel portion whose depth is deeper than the peripheral wall, and is disposed on both sides of the center panel and has a depth deeper than the center panel portion. Two side panel portions extending along the axial direction, an upper panel portion disposed on the upper side of the center panel portion and having a depth deeper than the side panel portion and extending along the two side panel portions, and a center A synthetic resin container comprising: a lower panel portion disposed below the panel portion and having a depth deeper than the side panel portion and extending along the two side panel portions. 請求項１において、アッパーパネル部とロアパネル部との高さに高低差をつけた合成樹脂製容器。   The synthetic resin container according to claim 1, wherein a height difference is provided between the height of the upper panel portion and the lower panel portion. 請求項１において、アッパーパネル部とロアパネル部とを同一の高さとした合成樹脂製容器。   The synthetic resin container according to claim 1, wherein the upper panel portion and the lower panel portion have the same height.
JP2007088852A 2007-03-29 2007-03-29 Plastic container Active JP4842188B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007088852A JP4842188B2 (en) 2007-03-29 2007-03-29 Plastic container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007088852A JP4842188B2 (en) 2007-03-29 2007-03-29 Plastic container

Publications (2)

Publication Number Publication Date
JP2008247409A true JP2008247409A (en) 2008-10-16
JP4842188B2 JP4842188B2 (en) 2011-12-21

Family

ID=39972836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007088852A Active JP4842188B2 (en) 2007-03-29 2007-03-29 Plastic container

Country Status (1)

Country Link
JP (1) JP4842188B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012176788A (en) * 2011-02-28 2012-09-13 Yoshino Kogyosho Co Ltd Bottle
JP2012180122A (en) * 2011-03-02 2012-09-20 Kirin Brewery Co Ltd Plastic bottle and beverage product using the same
JP2014028649A (en) * 2012-07-05 2014-02-13 Dainippon Printing Co Ltd Plastic bottle container
JP2020063066A (en) * 2018-10-16 2020-04-23 大日本印刷株式会社 Plastic bottle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06336238A (en) * 1993-05-24 1994-12-06 Mitsubishi Plastics Ind Ltd Plastic bottle
JPH0711516U (en) * 1993-08-03 1995-02-21 東洋製罐株式会社 Plastic bottle
JPH07329158A (en) * 1994-06-09 1995-12-19 Nissei Asb Mach Co Ltd Biaxially stretching blow molded container
JP2001206331A (en) * 2000-01-25 2001-07-31 Yoshino Kogyosho Co Ltd Plastic bottle
JP2005096850A (en) * 2003-08-29 2005-04-14 Yoshino Kogyosho Co Ltd Synthetic resin made bottle type container
JP2007030965A (en) * 2005-07-29 2007-02-08 Yoshino Kogyosho Co Ltd Synthetic resin bottle body

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06336238A (en) * 1993-05-24 1994-12-06 Mitsubishi Plastics Ind Ltd Plastic bottle
JPH0711516U (en) * 1993-08-03 1995-02-21 東洋製罐株式会社 Plastic bottle
JPH07329158A (en) * 1994-06-09 1995-12-19 Nissei Asb Mach Co Ltd Biaxially stretching blow molded container
JP2001206331A (en) * 2000-01-25 2001-07-31 Yoshino Kogyosho Co Ltd Plastic bottle
JP2005096850A (en) * 2003-08-29 2005-04-14 Yoshino Kogyosho Co Ltd Synthetic resin made bottle type container
JP2007030965A (en) * 2005-07-29 2007-02-08 Yoshino Kogyosho Co Ltd Synthetic resin bottle body

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012176788A (en) * 2011-02-28 2012-09-13 Yoshino Kogyosho Co Ltd Bottle
JP2012180122A (en) * 2011-03-02 2012-09-20 Kirin Brewery Co Ltd Plastic bottle and beverage product using the same
JP2014028649A (en) * 2012-07-05 2014-02-13 Dainippon Printing Co Ltd Plastic bottle container
JP2020063066A (en) * 2018-10-16 2020-04-23 大日本印刷株式会社 Plastic bottle
JP7410449B2 (en) 2018-10-16 2024-01-10 大日本印刷株式会社 plastic bottle

Also Published As

Publication number Publication date
JP4842188B2 (en) 2011-12-21

Similar Documents

Publication Publication Date Title
EP1561691B1 (en) Synthetic resin bottle type container
JP2004262500A (en) Bottle type container made of synthetic resin
JP4756324B2 (en) Synthetic resin housing
JP4840645B2 (en) Synthetic plastic square bottle
JP4842188B2 (en) Plastic container
KR101688673B1 (en) Circular bottle body manufactured from synthetic resin
JP4936247B2 (en) Synthetic resin square housing
JP5035680B2 (en) Synthetic resin housing
JP2012096798A (en) Synthetic resin round bottle body
JP5207178B2 (en) Synthetic resin square housing
JP4217890B2 (en) Plastic container
JP4936239B2 (en) Synthetic resin housing
JP6685842B2 (en) Blow molded container
JP2010149911A (en) Synthetic resin-made round bottle
JP4936241B2 (en) Synthetic resin square housing
JP5283828B2 (en) Plastic bottle
JP4795156B2 (en) Plastic bottle
JP2008007158A (en) Bottle
JPH07329158A (en) Biaxially stretching blow molded container
JP2008030822A (en) Synthetic resin bottle equipped with pressure reducing/absorbing panel
JP2015127249A (en) Synthetic resin round bottle body
JP2008030817A (en) Synthetic resin bottle
JP2010036943A (en) Plastic bottle
JP7300880B2 (en) Bottle
JP5943249B2 (en) Synthetic resin square housing

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090929

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110929

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: 20111004

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20111005

R150 Certificate of patent or registration of utility model

Ref document number: 4842188

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20141014

Year of fee payment: 3