JPH0199949A - Plastic pressure container - Google Patents
Plastic pressure containerInfo
- Publication number
- JPH0199949A JPH0199949A JP62255275A JP25527587A JPH0199949A JP H0199949 A JPH0199949 A JP H0199949A JP 62255275 A JP62255275 A JP 62255275A JP 25527587 A JP25527587 A JP 25527587A JP H0199949 A JPH0199949 A JP H0199949A
- Authority
- JP
- Japan
- Prior art keywords
- side wall
- ribs
- recessed portion
- container body
- rib
- 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
Links
- 239000004033 plastic Substances 0.000 title claims description 10
- 238000005452 bending Methods 0.000 abstract description 11
- 235000014171 carbonated beverage Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000071 blow moulding Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/0261—Bottom construction
- B65D1/0276—Bottom construction having a continuous contact surface, e.g. Champagne-type bottom
Abstract
Description
【発明の詳細な説明】
（産業上の利用分Ｗｆ）
本発明はプラスチックの底部構造に関し、特に加圧空気
又は加圧液体を収容するに適した耐圧プラスチック容器
に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Wf) The present invention relates to a plastic bottom structure, and more particularly to a pressure-resistant plastic container suitable for containing pressurized air or pressurized liquid.
（従来の技術）
従来、炭酸飲料等の内圧が加わるプラスチック容器とし
ては、例えば特公昭５７−５７３３０号公報又は特開昭
５６−７５８３４号公報に開示されたものがある。斯か
る従来例において、特公昭５７−５７３３０号公報のも
のは、第７図に示すように、容器の底部１００が中央凹
入部１０１と、この凹入部１０１から側壁の端部１０３
へ移行し凹入部１０１を囲むかかと部分１０４と、凹入
部１０１の外面上に間隔を置いて対称的に分布され、且
つ各々が凹入部１０１の内部からかかと部分１０４に向
って延びる複数のリブ１０５を有している。そして、か
かと部分１０４の最低点が共通の平面内に位置して連続
した支持環を形成している。(Prior Art) Conventionally, as plastic containers to which internal pressure is applied, such as carbonated drinks, there are those disclosed, for example, in Japanese Patent Publication No. 57-57330 or Japanese Patent Application Laid-open No. 75834-1983. In such a conventional example, the one disclosed in Japanese Patent Publication No. 57-57330 has a container bottom 100 with a central recess 101 and a side wall end 103 extending from the recess 101, as shown in FIG.
a heel portion 104 transitioning to and surrounding the recess 101; and a plurality of ribs 105 spaced and symmetrically distributed on the outer surface of the recess 101, each extending from the interior of the recess 101 toward the heel portion 104. have. The lowest points of the heel portions 104 are located in a common plane to form a continuous support ring.
また、特開昭５６−７５８３４号公報に示すものは、第
８図及び第９図に示すように、底部１１６の外部が一部
球面の部分１１７を有しており、また内方に半球形に膨
出した部分１１８を有している。この半球形部分１１８
は接合部１２０にて外方部分１１７に接している。また
底部１１６の内面に複数の半径方向に延びろリブ１２２
を円周方向に間隔を置いて内方に突出して配置し、底部
１１６を補強している。Furthermore, as shown in FIGS. 8 and 9, in the device shown in Japanese Patent Application Laid-open No. 56-75834, the outside of the bottom portion 116 has a partially spherical portion 117, and the inside has a hemispherical shape. It has a bulged portion 118. This hemispherical portion 118
contacts outer portion 117 at joint 120 . Additionally, a plurality of radially extending ribs 122 are provided on the inner surface of the bottom portion 116.
are arranged to protrude inwardly at intervals in the circumferential direction to reinforce the bottom portion 116.
ところで、上記各プラスチック容器は、例えば殺菌のた
めの加熱時や輸送及び貯蔵の間に遭遇する高温によって
生ずる内圧下において、挫屈又は変形され易く、そのた
め底部に凹入部（球面部分）を形成し、これらにリブを
設けて補強している。By the way, each of the above-mentioned plastic containers is easily buckled or deformed under internal pressure caused by high temperatures encountered during heating for sterilization or during transportation and storage, and therefore a concave portion (spherical portion) is formed at the bottom. , these are reinforced with ribs.
（発明が解決しようとする問題点）
しかしながら、斯かる従来例において、特公昭５７−５
７３３０号公報（第一従来例）に示すものは、リブ１０
５が凹入部１０１の最内部から側壁の端部１０３に向っ
てその厚さが漸次減少するように形成されているため、
かかと部分１０４の肉厚が相対的に薄くなり、その結果
底部１００の曲げ応力が小さくなり、加熱によって生ず
る内圧下において凹入部１０１が反転して外部に膨出し
て容器の自立性が損われることとなる。仮に、反転が起
こらなかったとしても、凹入部１０１とそれを囲むかか
と部分１０４との間において外方にせり出されるか或い
は湾曲され、これにより凹入部１０１が浅くなり、かか
と部分１０４の半径方向の寸法が変化することとなって
、容器の内容積が増加して内容物のレベルが降下して外
観品質を低下させてしまう問題がある。(Problems to be solved by the invention) However, in such a conventional example,
What is shown in Publication No. 7330 (first conventional example) is a rib 10
5 is formed so that its thickness gradually decreases from the innermost part of the recessed part 101 toward the end part 103 of the side wall,
The wall thickness of the heel portion 104 becomes relatively thin, and as a result, the bending stress of the bottom portion 100 becomes small, and under the internal pressure generated by heating, the recessed portion 101 inverts and bulges outward, impairing the independence of the container. becomes. Even if the reversal does not occur, the space between the recess 101 and the heel portion 104 surrounding it will be pushed outward or curved, thereby making the recess 101 shallower and causing the heel portion 104 to move in the radial direction. This causes a problem in that the internal volume of the container increases, the level of the contents decreases, and the appearance quality deteriorates.
これを解決する手段として、底部１００を一段と補強す
るために、リブ１０５をかかと部分１０４を越えて側壁
の端部１０３まで延長したとすると、各リブ１０５は凹
入部１０１から外方に突出して形成されていることから
、かかと部分１０４に各リブ１０５が突出し、水平面に
対してかかと部分１０４ではなく各リブ１０５が当接す
ることになり、本来有していた直立時における安定性が
阻害されるという問題点があった。加えて、各リブ１０
５は、その側断面形状が半円弧形であるので、曲げ応力
が小さく、よって底部１００の面剛性が低いため、変形
し易く、上述の問題点を回避できない。As a solution to this problem, in order to further strengthen the sole 100, the ribs 105 are extended beyond the heel portion 104 to the end 103 of the sidewall. As a result, each rib 105 protrudes from the heel portion 104, and each rib 105 comes into contact with the horizontal surface instead of the heel portion 104, which impedes the original stability when standing upright. There was a problem. In addition, each rib 10
5 has a semicircular side cross-sectional shape, so the bending stress is small, and the surface rigidity of the bottom part 100 is low, so that it is easily deformed and the above-mentioned problems cannot be avoided.
また、上記従来例において、特開昭５６−７５８３４号
公報（第二従来例）に示すものは、リブ１２２が最上部
１２１の近傍から半球形部分１１８を通り、更に接合部
１２０を越えて外方部分１１７の下部まで延びているも
のの、リブ１２２が半球形部分１１８に対して肉盛りを
施した構成であって、その断面形状が第９図に示すよう
に略半円形を成している。そのため各リブ１２２の曲げ
応力は小さ（、半球形部分（底部） １１８の面剛性が
低下することとなり、加熱によって生ずる内圧下におい
て半球形部分１１８が反転することとなって、容器を直
立した状態で維持することができず、また容器の内容積
が増加して、内容液のレベルが降下して外観品質を低下
させてしまうという問題点があった。Furthermore, in the conventional example described above, in the one shown in JP-A-56-75834 (second conventional example), the rib 122 passes through the hemispherical part 118 from near the top 121, and further extends beyond the joint 120 to the outside. Although the rib 122 extends to the lower part of the hemispherical portion 117, the rib 122 is built up on the hemispherical portion 118, and its cross-sectional shape is approximately semicircular as shown in FIG. . Therefore, the bending stress of each rib 122 is small (the surface rigidity of the hemispherical portion (bottom) 118 is reduced, and the hemispherical portion 118 is inverted under the internal pressure caused by heating, making the container stand upright. There was a problem in that the internal volume of the container was increased, the level of the liquid content decreased, and the quality of the appearance deteriorated.
そこで、本発明は従来例の上記した問題点を解決するた
めになされたもので、その目的とするところは、各リブ
の曲げ応力を大として底部の面剛性を高くして、加熱雰
囲気下においても、長時間直立した状態の安定性を維持
した耐圧プラスチック容器を提供することにある。Therefore, the present invention has been made to solve the above-mentioned problems of the conventional example, and its purpose is to increase the bending stress of each rib and increase the surface rigidity of the bottom part, so that it can be used in a heated atmosphere. Another object of the present invention is to provide a pressure-resistant plastic container that maintains stability in an upright state for a long period of time.
（問題点を解決するための手段）
上記の目的を達成するために、本発明にあっては、側壁
と、この側壁の端部に位置する底部とを有する耐圧プラ
スチック容器において、前記底部に、内部に膨出する凹
陥部と、該凹陥部を囲み前記側壁端部に移行して突出す
る接面部と、前記凹陥部から前記接面部を通り前記側壁
端部まで放射状に延びると共に、内部に突出する側断面
略逆Ｕ字形の複数のリブとを形成したことにより構成さ
れている。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a pressure-resistant plastic container having a side wall and a bottom located at an end of the side wall. a concave portion that bulges inward; a contact surface that surrounds the concave portion and protrudes toward the end of the side wall; and a contact surface that extends radially from the concave portion through the contact surface to the end of the side wall and protrudes inward. It is constructed by forming a plurality of ribs having a substantially inverted U-shaped side cross section.
（作 用）
上記の構成を有する本発明においては、各リブが内部に
突出する側断面略逆Ｕ字形に形成したことによって、内
圧に対する各リブの曲げ応力を大として、またリブが凹
陥部から接面部を通り側壁端部まで放射状に延びたこと
によって、上記リブの形状と相俟って底部の面剛性を大
幅に高めた。(Function) In the present invention having the above-mentioned configuration, each rib is formed to have a substantially inverted U-shaped side cross section projecting inward, thereby increasing the bending stress of each rib against internal pressure, and allowing the rib to move away from the concave portion. By extending radially through the contact surface to the end of the side wall, together with the shape of the ribs described above, the surface rigidity of the bottom is greatly increased.
さらに、各リブが接面部を通って側壁端部まで延びてい
ても、内部に突出して側断面略逆Ｕ字形に形成したこと
によって、各リブが煉面部より突出することがないので
、直立した状態を安定して維持する。Furthermore, even though each rib extends through the contact surface to the end of the side wall, by protruding inward and forming a substantially inverted U-shape in side cross section, each rib does not protrude beyond the brick surface. Maintain a stable condition.
（実施例）
以下に本発明を図示の実施例に基づいて説明する。第１
図は本発明の第一実施例を示す正面図であり、同図にお
いて、１は容器本体で、該容器本体１は有底且っ上端開
口で管状をなすポリエステル樹脂等のプラスチックから
成る中間素材を射出成形等で形成させておき、この中間
素材を延伸に適するる温度に加熱し、これをブロー成形
用の金型内にセットして二軸延伸ブロー成形されろ。ま
た、本実施例において、容器本体１はブロー成形後、上
方体２ｒｉ！切断してテニスボール等を収納し、さらに
金Ｒ製蓋体（図示せず）を巻締め、内圧を１ｋｇ／ｃｉ
に保持して密封する。(Example) The present invention will be explained below based on the illustrated example. 1st
The figure is a front view showing a first embodiment of the present invention, and in the same figure, 1 is a container body, and the container body 1 is an intermediate material made of plastic such as polyester resin, which is tubular with a bottom and an opening at the top. This intermediate material is formed by injection molding or the like, heated to a temperature suitable for stretching, placed in a blow molding mold, and biaxially stretched blow molded. Furthermore, in this embodiment, the container body 1 is formed into an upper body 2ri after blow molding. It is cut to store tennis balls, etc., and then a gold R lid (not shown) is tightened, and the internal pressure is set to 1 kg/ci.
Hold and seal.
３ば容器本体１の側壁、３ａは側壁３の端部、４は側壁
３の端部３ａに位置する底部で、該底部４には第２図及
び第３図に示すように、容器本体１内部に円弧状に膨出
して形成した凹陥部５と、この凹陥部５を囲み側壁端部
３ａに移行して略円環状に突出して水平面と当接する接
面部６と、凹陥部５から接面部６を通り側壁端部３ａま
で放射状に延びる６本のリブ７とが形成されている。3 is a side wall of the container body 1, 3a is an end of the side wall 3, and 4 is a bottom located at the end 3a of the side wall 3. As shown in FIGS. 2 and 3, the container body 1 is attached to the bottom 4. A concave portion 5 formed in an arc-shaped bulge inside, a contact surface portion 6 that surrounds the concave portion 5, moves to the side wall end portion 3a, protrudes in a substantially annular shape, and comes into contact with a horizontal surface, and a contact surface portion from the concave portion 5. Six ribs 7 are formed that extend radially through the ribs 6 to the side wall end 3a.
即ち、リブ７は凹陥部５の中央に位置する中央面５ａか
ら接面部６を通って側壁端部３ａまで放射状に延びてい
ることによって、底部４の曲げ応力を高めている。また
、リブ７（、を第４図に示すように側断面略逆Ｕ字形を
成し、容器本体１の内部に突出するように形成されてい
る。従ってリブ７が接面部６を通って側壁端部３ａまで
延びていても、接面部６から突出することなく、容器本
体１を直立した状態を安定して維持することができる。That is, the ribs 7 extend radially from the center surface 5a located at the center of the concave portion 5 through the contact surface portion 6 to the side wall end portion 3a, thereby increasing the bending stress of the bottom portion 4. Further, as shown in FIG. 4, the ribs 7 ( ) are formed to have a substantially inverted U-shape in side section and protrude into the interior of the container body 1 . Even if it extends to the end portion 3a, the container body 1 can be stably maintained in an upright state without protruding from the contact surface portion 6.
さらに、リブ７はその全体が凹陥部５と路間−の肉厚で
形成され、凹陥部５内において若干の角部７ａが形成さ
れている。乙のように、リブ７に角部７ａを形成するこ
とによって、凹陥部５の形状に沿って円弧状に形成した
リブより、−段と底部４の曲げ応力を高めることができ
る。そして、中央面５ａの外部にはリブ７が形成される
部分において、角部５ｂが形成されており、これによっ
ても曲げ応力を増大することができる。Furthermore, the entire rib 7 is formed with a thickness equal to that between the concave portion 5 and the groove, and a slight corner portion 7a is formed within the concave portion 5. By forming the corner portions 7a on the ribs 7 as shown in FIG. 3B, the bending stress at the -step and the bottom portion 4 can be increased more than when the ribs are formed in an arc shape along the shape of the recessed portion 5. A corner portion 5b is formed outside the central surface 5a at a portion where the rib 7 is formed, and this also makes it possible to increase the bending stress.
しかして、本実施例では、各リブ７が容器本体１の内部
に突出する側断面略逆Ｕ字形であって、中央面５ａから
接面部６を通って側壁端部３ａまで延びていることで、
底部４の曲げ応力を高めて面剛性を大としている。よっ
て、輸送、貯蔵時において、容器本体１が加熱されて内
圧が上昇しても、底部４が反転して外部に膨出して直立
時の安定性が損われることがない。Therefore, in this embodiment, each rib 7 has a substantially inverted U-shaped side cross section projecting into the interior of the container body 1, and extends from the center surface 5a through the contact surface 6 to the side wall end 3a. ,
The bending stress of the bottom portion 4 is increased to increase surface rigidity. Therefore, even if the container body 1 is heated and the internal pressure increases during transportation or storage, the bottom portion 4 will not invert and bulge outward, thereby preventing loss of stability when standing upright.
次に、本実施例の容器本体１を上記第一従来例のように
リブを外方に突出形成したもの、上記第二従来例のよう
にリブを内部に突出形成したもの或いはリブを設けずに
単に底部を内方に膨出させたもの（第三従来例）と比較
してみるに、温度３８℃、相対潤度８０％、内圧１ ｋ
ｇ ／ ｃ−の雰囲気下で４８時間保存後、温度を７０
℃に上昇させた場合の底部が何時間で反転（パックリン
グ）するかを実験したところ、本実施例では３時間、第
一従来例では１５時間、第二従来例では２時間、第三従
来例では１５時間有することが判明した。従って、本実
施例では、各々の従来例より大幅に面剛性の高い底部を
備えていることがわかる。Next, the container body 1 of this embodiment has ribs protruding outward as in the first conventional example, or ribs protruding inward as in the second conventional example, or no ribs. When compared with the one in which the bottom part was simply expanded inward (third conventional example), the temperature was 38°C, the relative humidity was 80%, and the internal pressure was 1 k.
After storage for 48 hours under an atmosphere of g/c-, the temperature was increased to 70
An experiment was carried out to determine how many hours it would take for the bottom to turn over (pack ring) when raised to a temperature of In one example, it was found to last for 15 hours. Therefore, it can be seen that the present example has a bottom portion with significantly higher surface rigidity than each of the conventional examples.
第５図及び第６図は本発明の第二実施例を示し、上記第
一実施例と同一の部分には同一の符号を付して説明する
と、この実施例では各リブ７′が中央面５ａから接面部
６．側壁端部３ａを通って、さらに湾曲部３ｂまで延び
て形成されている。このようにリブ７′を形成すること
によって、上記第一実施例と比較して数段底部４の面間
性が大となる。5 and 6 show a second embodiment of the present invention, in which the same parts as in the first embodiment are given the same reference numerals. In this embodiment, each rib 7' is 5a to the contact surface 6. It is formed to pass through the side wall end 3a and further extend to the curved portion 3b. By forming the ribs 7' in this manner, the interplanarity of the several-step bottom portion 4 is increased compared to the first embodiment.
その他の構成及び作用は上記第一実施例と同一であるの
でその説明を省略する。The other configurations and operations are the same as those of the first embodiment, so their explanation will be omitted.
尚、上記各実施例では、テニスボールを収納するための
容器について説明したが、本発明は例えば炭酸飲料等の
内圧が加わる容器の底部に適用すると好適である。即ち
、容器本体に果汁炭酸飲料等の内容物を注入充填するも
のにあっては、密封した上、容器本体に上方より熱湯を
シャワー状にして浴びせかけて内容物を殺菌するため、
容器本体の内圧が高まるが、上記各実施例では、上記の
ように構成することによってこのような場合でも底部が
反転することなく十分上記内圧に耐え得る。In each of the above embodiments, a container for storing tennis balls has been described, but the present invention is suitably applied to the bottom of a container to which internal pressure is applied, such as for carbonated drinks. That is, in the case of containers in which contents such as fruit juice carbonated drinks are injected and filled, the contents are sterilized by showering boiling water onto the container body from above after sealing the container.
Although the internal pressure of the container body increases, in each of the above-described embodiments, the above-described configuration allows the bottom portion to sufficiently withstand the internal pressure without inverting even in such a case.
従って、内容物のレベルが変化することもない。Therefore, the level of the contents does not change.
また上記各実施例で１よ、リブを放射状に６本底部に形
成したが、本数は複数であればよく、それ以上の本数を
形成すれば、さらに底部の面剛性が向上することになる
。Further, in each of the above embodiments, six ribs are formed radially on the bottom, but the number of ribs may be more than one, and if more ribs are formed, the surface rigidity of the bottom will be further improved.
（発明の効果）
以上説明したように、本発明によれば、底部に凹陥部か
ら接面部を通り鋸断端部まで放射状に延び、且つ内部に
突出する側端面略逆Ｕ字形の複数のリブを形成したこと
によって、各リブの曲げ応力が大となって、底部の面剛
性を高（することができる。その結果、加熱雰囲気下に
おいても従来例より短時間で底部が反転することなく、
長時間直立した状態を安定して維持することが可能とな
り、外観品質を低下させることもない。(Effects of the Invention) As described above, according to the present invention, a plurality of ribs having a substantially inverted U-shape on the side end surface extend radially from the recessed portion to the saw cut end through the contact surface portion at the bottom portion and protrude inward. By forming the ribs, the bending stress of each rib is increased and the surface rigidity of the bottom part is increased.As a result, even in a heated atmosphere, the bottom part does not turn over in a shorter time than the conventional example
It becomes possible to stably maintain an upright state for a long time, and there is no deterioration in appearance quality.
また、リブは内部に突出形成したので、接面部において
リブが突出せずに、上記直立した際の安定性を阻害する
ことがないという効果を奏する。Further, since the ribs are formed to protrude from the inside, the ribs do not protrude from the contact surface portion, and the stability when standing upright is not impaired.
第１図は本発明の第一実施例の耐圧プラスチック容器を
示す正面図、第２図は同実施例における底部の縦断面図
、第３図は第２図におけるＡ−Ａ線断面図、第４図は第
２図におけるＢ−Ｂ線断面図、第５図は本発明の第二実
施例における底部の縦断面図、第６図は第５図のＣ−Ｃ
線断面図、第７図は第一従来例の底部を示す縦断面図、
第８図は第二従来例の底部を示す縦断面図、第９図は第
８図におけるＤ−Ｄ線断面図である。
符号の説明
１・容器本体、 ３・・側壁、
３ａ・・側壁端部、 ４・・底部、
５・・・凹陥部、 ６ 接面部、７・リブ。
特許出願人 東洋製罐株式会社 、ニー：ｊ、、ｌ）
、。
代理人 弁理士 世 良 和 信 、Ｈ
Ｂ、Ｈ，Ｈ，ｊ代理人弁理士 奥 １）規 之 、
７！：・：、。
：、°−
第３図
第５図
第７図
第８図
第９図FIG. 1 is a front view showing a pressure-resistant plastic container according to a first embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view of the bottom of the same embodiment, and FIG. 4 is a sectional view taken along the line B-B in FIG. 2, FIG. 5 is a longitudinal sectional view of the bottom of the second embodiment of the present invention, and FIG. 6 is a sectional view taken along the line C-C in FIG. 5.
A line sectional view, FIG. 7 is a vertical sectional view showing the bottom of the first conventional example,
FIG. 8 is a longitudinal cross-sectional view showing the bottom of the second conventional example, and FIG. 9 is a cross-sectional view taken along the line D--D in FIG. 8. Explanation of symbols 1. Container body, 3. Side wall, 3a. Side wall end, 4. Bottom, 5. Recessed portion, 6. Contact surface, 7. Rib. Patent applicant Toyo Seikan Co., Ltd., knee: j,, l)
,. Agent: Patent Attorney Kazunobu Sera, H
B, H, H, j Representative Patent Attorney Oku 1) Noriyuki,
7! ：・：、. :, °- Figure 3 Figure 5 Figure 7 Figure 8 Figure 9
Claims (1)
プラスチック容器において、前記底部に、内部に膨出す
る凹陥部と、該凹陥部を囲み前記側壁端部に移行して突
出する接面部と、前記凹陥部から前記接面部を通り前記
側壁端部まで放射状に延びると共に、内部に突出する側
断面略逆Ｕ字形の複数のリブとを形成したことを特徴と
する耐圧プラスチック容器。A pressure-resistant plastic container having a side wall and a bottom located at an end of the side wall, wherein the bottom has a recess that bulges inward, and a contact surface that surrounds the recess and projects toward the end of the side wall. and a plurality of ribs extending radially from the recess through the contact surface to the end of the side wall and protruding inward, the side cross section of which is substantially inverted U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62255275A JPH0199949A (en) | 1987-10-09 | 1987-10-09 | Plastic pressure container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62255275A JPH0199949A (en) | 1987-10-09 | 1987-10-09 | Plastic pressure container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0199949A true JPH0199949A (en) | 1989-04-18 |
| JPH0339897B2 JPH0339897B2 (en) | 1991-06-17 |
Family
ID=17276487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62255275A Granted JPH0199949A (en) | 1987-10-09 | 1987-10-09 | Plastic pressure container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0199949A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5024340A (en) * | 1990-07-23 | 1991-06-18 | Sewell Plastics, Inc. | Wide stance footed bottle |
| US5064080A (en) * | 1990-11-15 | 1991-11-12 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US5071015A (en) * | 1990-12-11 | 1991-12-10 | Hoover Universal, Inc. | Blow molded PET container with ribbed base structure |
| JPH0491816U (en) * | 1990-12-25 | 1992-08-11 | ||
| US5139162A (en) * | 1990-11-15 | 1992-08-18 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US5236097A (en) * | 1991-11-04 | 1993-08-17 | Hoover Universal Inc. | Plastic container with improved base structure |
| US5287978A (en) * | 1990-11-15 | 1994-02-22 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US5615790A (en) * | 1990-11-15 | 1997-04-01 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US5664695A (en) * | 1995-01-06 | 1997-09-09 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| JP2010535137A (en) * | 2007-07-30 | 2010-11-18 | シデル パーティシペイションズ | Container having a bottom with a deformable membrane |
| FR2966130A1 (en) * | 2010-10-15 | 2012-04-20 | Sidel Participations | Plastic container e.g. bottle, for containing e.g. milk, has bottom including vault extending from central area of bottom to area near base of bottom, where bottom includes set of stiffeners that extend from vault to positioning plane |
| WO2015166682A1 (en) * | 2014-04-30 | 2015-11-05 | 株式会社吉野工業所 | Bottle |
| EP3208204A1 (en) * | 2016-02-19 | 2017-08-23 | Pumperlgsund GmbH | Plastic bottle and use of the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675834A (en) * | 1979-11-27 | 1981-06-23 | Continental Group | Plastic vessel with internal rib reinforced bottom and its manufacture |
| JPS5910014U (en) * | 1982-07-12 | 1984-01-21 | 横河電機株式会社 | capacitive converter |
-
1987
- 1987-10-09 JP JP62255275A patent/JPH0199949A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675834A (en) * | 1979-11-27 | 1981-06-23 | Continental Group | Plastic vessel with internal rib reinforced bottom and its manufacture |
| JPS5910014U (en) * | 1982-07-12 | 1984-01-21 | 横河電機株式会社 | capacitive converter |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5024340A (en) * | 1990-07-23 | 1991-06-18 | Sewell Plastics, Inc. | Wide stance footed bottle |
| US5685446A (en) * | 1990-11-15 | 1997-11-11 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US5139162A (en) * | 1990-11-15 | 1992-08-18 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US5064080A (en) * | 1990-11-15 | 1991-11-12 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US5287978A (en) * | 1990-11-15 | 1994-02-22 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US5615790A (en) * | 1990-11-15 | 1997-04-01 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US7520400B2 (en) | 1990-11-15 | 2009-04-21 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US7198163B2 (en) | 1990-11-15 | 2007-04-03 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US5850931A (en) * | 1990-11-15 | 1998-12-22 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US6260724B1 (en) | 1990-11-15 | 2001-07-17 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US6908002B2 (en) | 1990-11-15 | 2005-06-21 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| US5071015A (en) * | 1990-12-11 | 1991-12-10 | Hoover Universal, Inc. | Blow molded PET container with ribbed base structure |
| JPH0491816U (en) * | 1990-12-25 | 1992-08-11 | ||
| US5236097A (en) * | 1991-11-04 | 1993-08-17 | Hoover Universal Inc. | Plastic container with improved base structure |
| US5664695A (en) * | 1995-01-06 | 1997-09-09 | Plastipak Packaging, Inc. | Plastic blow molded freestanding container |
| JP2010535137A (en) * | 2007-07-30 | 2010-11-18 | シデル パーティシペイションズ | Container having a bottom with a deformable membrane |
| FR2966130A1 (en) * | 2010-10-15 | 2012-04-20 | Sidel Participations | Plastic container e.g. bottle, for containing e.g. milk, has bottom including vault extending from central area of bottom to area near base of bottom, where bottom includes set of stiffeners that extend from vault to positioning plane |
| WO2015166682A1 (en) * | 2014-04-30 | 2015-11-05 | 株式会社吉野工業所 | Bottle |
| JP2015209240A (en) * | 2014-04-30 | 2015-11-24 | 株式会社吉野工業所 | bottle |
| US10167127B2 (en) | 2014-04-30 | 2019-01-01 | Yoshino Kogyosho Co., Ltd. | Cylindrical bottle with bottom |
| EP3208204A1 (en) * | 2016-02-19 | 2017-08-23 | Pumperlgsund GmbH | Plastic bottle and use of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0339897B2 (en) | 1991-06-17 |
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| LAPS | Cancellation because of no payment of annual fees |