JPH0339897B2 - - Google Patents
Info
- Publication number
- JPH0339897B2 JPH0339897B2 JP62255275A JP25527587A JPH0339897B2 JP H0339897 B2 JPH0339897 B2 JP H0339897B2 JP 62255275 A JP62255275 A JP 62255275A JP 25527587 A JP25527587 A JP 25527587A JP H0339897 B2 JPH0339897 B2 JP H0339897B2
- Authority
- JP
- Japan
- Prior art keywords
- side wall
- rib
- ribs
- recess
- contact surface
- 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.)
- Expired - Lifetime
Links
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—Rigid or semi-rigid 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 or 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
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はプラスチツ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
ラスチツク容器に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to plastic bottom structures, and more particularly to pressure-resistant plastic containers suitable for containing pressurized air or pressurized liquids.
（従来の技術）
従来、炭酸飲料等の内圧が加わるプラスチツク
容器としては、例えば特公昭57−57380号広報又
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に向つて延
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図に位置し
て連続した支持環を形成している。(Prior Art) Conventionally, plastic containers to which internal pressure is applied for carbonated beverages and the like are disclosed, for example, in Japanese Patent Publication No. 57-57380 or Japanese Patent Application Laid-open No. 75834-1983. Among such conventional examples, as shown in FIG.
a heel portion 104 that transitions from the end 103 of the side wall to the recess 101 and surrounds the recess 101; It has a plurality of ribs 105 extending therethrough. The lowest points of the heel portions 104 are located in a common plan view 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は接面部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るリブ１２２を円周方向に
間隔を置いて内方に突出し配置し、底部１１６を
補強している。 Moreover, what is shown in Japanese Patent Application Laid-Open No. 56-75834 is
As shown in FIGS. 8 and 9, the outside of the bottom portion 116 has a partially spherical portion 117, and also has a hemispherically bulged portion 118 inward.
This hemispherical portion 118 abuts the outer portion 117 at a contact surface 120 . Further, a plurality of radially extending ribs 122 are disposed on the inner surface of the bottom portion 116 and project inward at intervals in the circumferential direction to reinforce the bottom portion 116.
ところで、上記各プラスチツク容器は、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
る高温によつ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. 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
57−57330号公報（第一従来例）に示すものは、
リブ１０５が凹入部１０１の最内部から側壁の端
部１０３に向つ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、加熱によつ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
こらなかつたとしても、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１０
１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つて、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。(Problem to be solved by the invention) However, in such a conventional example,
What is shown in Publication No. 57-57330 (first conventional example) is
Since the rib 105 is formed so that its thickness gradually decreases from the innermost part of the recess 101 toward the end 103 of the side wall, the wall thickness of the heel portion 104 becomes relatively thin, and as a result, the bottom portion 100 The bending stress of the container decreases, and under the internal pressure generated by heating, the recessed portion 101 inverts and bulges outward, impairing the self-sustainability of the container. Even if no inversion occurs, the recess 101 is pushed outward or curved between the heel portion 104 surrounding it, and the recess 10
1 becomes shallower, and the radial dimension of the heel portion 104 changes, resulting in an increase in the internal volume of the container, lowering the level of the contents, and deteriorating the appearance quality.
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１０
４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つた。加えて、各リ
ブ１０５は、その側断面形状が半円孤形であるの
で、曲げ応力が小さく、よつて底部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 means to solve this problem, ribs 105 are added to the heel portion 100 in order to further strengthen the bottom portion 100.
4 to the end 103 of the side wall, each rib 105 is formed to protrude outward from the recess 101, so that the heel portion 104
Each rib 105 protrudes, causing each rib 105 to come into contact with a horizontal surface rather than the heel portion 104, which poses a problem in that the inherent stability when standing upright is impaired. In addition, since each rib 105 has a semicircular arc side cross-sectional shape, the bending stress is small, and the surface rigidity of the bottom portion 100 is low, so that it is easily deformed and the above-mentioned problem 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、更に接面部１２０を越えて外方部分１１７の
下部まで延びでいるものの、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つ
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
は小さく、半球形部分（底部）１１８の面剛性が
低下することとなり、加熱によつて生ずる内圧下
いおいて半球形部分１１８が反転することとなつ
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
問題点があつた。 In addition, in the above conventional example, Japanese Patent Laid-Open No. 56-75834
What is shown in the publication (second conventional example) is a rib 122
Although the ribs 122 extend from the vicinity of the top portion 121 through the hemispherical portion 118 and beyond the contact surface portion 120 to the lower part of the outer portion 117, the ribs 122 are built up on the hemispherical portion 118. Its cross-sectional shape is approximately semicircular as shown in FIG. Therefore, the bending stress of each rib 122 is small, and the surface rigidity of the hemispherical portion (bottom) 118 is reduced, and the hemispherical portion 118 is inverted under the internal pressure generated by heating, causing the container to close. There were problems in that it could not be maintained in an upright position, and the internal volume of the container increased, resulting in a drop in the level of the liquid content and a deterioration in appearance quality.
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制を維持した耐圧プラスチツ
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 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、本発明にあつて
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ツク容器において、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、凹陥部から内部に向けて略垂
直に突出する一対の突出壁と当該突出壁の内端を
接続した接続壁とを有する側断面略逆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; It is constructed by forming a plurality of ribs each having a substantially inverted U-shape in side cross section and having a pair of protruding walls that protrude substantially vertically inward and a connecting wall that connects the inner ends of the protruding walls.
（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
とによつて、内圧に対する各リブの凹陥部に対す
る略垂直方向の曲げ応力を突出壁により大とし
て、またリブが凹陥部がら接面部を通り側壁端部
まで放射状に延びたことによつて、上記リブの形
状と相俟つて底部の面剛性を大幅に高めた。さら
に、各リブが接面部を通つ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
したことによつて、各リブが接面部より突出する
ことがないので、直立した状態を安定して維持す
る。(Function) In the present invention having the above configuration, each rib is formed to have a substantially inverted U-shaped side cross section that protrudes inward, so that bending stress in a substantially perpendicular direction to the concave portion of each rib against internal pressure is reduced. By making the wall larger and by extending the ribs radially from the concave portion 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 portion is greatly increased. Furthermore, even if each rib extends through the contact surface to the end of the side wall, the ribs do not protrude beyond the contact surface because they protrude inward and are formed in a substantially inverted U-shape in side cross section. Maintain a stable upright position.
（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は有底且つ上端開口で管状をなすポリエステ
ル樹脂等のプラスチツ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
形内にセツトして二軸延伸ブロー整形される。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２を切断してテニスボール等を収納
し、さらに金属製蓋体（図示せず）を巻締め、内
圧を１Kg／cm2に保持して密封する。(Example) The present invention will be explained below based on the illustrated example. FIG. 1 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 tube made of plastic such as polyester resin, which is tubular with a bottom and an opening at the top. A raw material is formed by injection molding or the like, this intermediate material is heated to a temperature suitable for stretching, and this is set in a blow molding mold to perform biaxial stretching blow shaping. In this example, after blow molding, the container body 1 is made by cutting off the upper body 2 to store tennis balls, etc., and then tightening a metal lid (not shown) to maintain an internal pressure of 1 kg/cm 2 . Hold and seal.
３は容器本体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,
Reference numeral 4 denotes a bottom portion located at the end portion 3a of the side wall 3, and as shown in FIGS. 2 and 3, the bottom portion 4 includes the container body 1 and a concave portion 5 formed in an arc-shaped bulge inside the container body 1.
A contact surface portion 6 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 six ribs 7 extending radially from the concave portion 5 through the contact surface portion 6 to the side wall end portion 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を通つて側壁端部３ａまで放
射状に延びていることによつて、底部４の曲げ応
力を高めている。また、リブ７は第４図に示すよ
うに凹陥部５から内部に向けて略垂直に突出した
一対の突出壁２０と、突出壁２０の内端を接続し
た接続部２１とを有する側断面略逆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。従つてリブ７が接面部６を通つて側壁端
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。さらに、リブ７はその全
体が凹陥部５と略同一の肉厚で形成され、凹陥部
５内において若干の角部７ａが形成されている。
このように、リブ７に角部７ａを形成することに
よつて、凹陥部５の形状に沿つて円弧状に形成し
たリブより、一段と底部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５ａが形成さ
れており、これによつても曲げ応力を増大するこ
とができる。 That is, the ribs 7 increase the bending stress of the bottom portion 4 by extending 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. Further, as shown in FIG. 4, the rib 7 has a pair of protruding walls 20 that protrude substantially vertically inward from the concave portion 5, and a connecting portion 21 that connects the inner ends of the protruding walls 20. It has an inverted U shape and is formed to protrude into the interior of the container body 1. Therefore, even if the ribs 7 extend through the contact surface portion 6 to the side wall end portion 3a, they do not protrude from the contact surface portion 6, and the container body 1 can be stably maintained in an upright state. Furthermore, the entire rib 7 is formed to have substantially the same thickness as the recessed portion 5, and a slight corner portion 7a is formed within the recessed portion 5.
By forming the corner portions 7a in the rib 7 in this manner, the bending stress of the bottom portion 4 can be further increased than when the rib is formed in an arc shape along the shape of the recessed portion 5. A corner portion 5a 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字形であつて、
内圧に対する各リブ７の凹陥部５に対して略垂直
方向の曲げ応力を一対の突出壁２０により大とし
ているとともに、当該リブ７が中央面５ａから接
面部６を通つて側壁端部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。よつて、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凹陥部５に対して
略垂直に加わつたとしても、その圧力は各リブ７
の突出壁２０によつて吸収、緩和されるから、底
部４が反転して外部に膨出することはなく、直立
時の安定性を維持できる。 Therefore, in this embodiment, each rib 7 has a substantially inverted U-shaped side cross section that protrudes into the interior of the container body 1, and
The bending stress in a direction substantially perpendicular to the concave portion 5 of each rib 7 against internal pressure is increased by the pair of protruding walls 20, and the rib 7 extends from the center surface 5a through the contact surface portion 6 to the side wall end portion 3a. By doing so, the bending stress of the bottom portion 4 is increased and the surface rigidity is increased. Therefore, even if the container body 1 is heated and the internal pressure is increased during transportation or storage and is applied approximately perpendicularly to the recessed portion 5, the pressure will be applied to each rib 7.
Since the bottom part 4 is absorbed and relaxed by the protruding wall 20, the bottom part 4 does not invert and bulge outward, and can maintain 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
℃、相対湿度80％、内圧１Kg／cm2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（バツクリング）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
1.5時間、第二従来例では２時間有することが判
明した。従つて、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 is simply bulged inward (third conventional example), the temperature is 38
℃, relative humidity 80%, internal pressure 1Kg/ cm2 atmosphere 48
An experiment was conducted to determine how many hours it would take for the bottom to turn over (backling) when the temperature was raised to 70°C after storage for a period of time.
It was found that it lasted 1.5 hours, while the second conventional example lasted 2 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を通つ
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つて、
上記第一実施例と比較して数段底部４の面剛性が
大となる。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。 5 and 6 show a second embodiment of the present invention, in which the same parts as in the first embodiment are designated by the same reference numerals. In this embodiment, each rib 7'
is formed extending from the center surface 5a, through the contact surface portion 6, the side wall end portion 3a, and further to the curved portion 3b. By forming the rib 7' in this way,
Compared to the first embodiment, the surface rigidity of the bottom portion 4 of several steps is increased. 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つては、密封
した上、容器本体に上方より熱湯をシヤワー状に
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つ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。従つて、内容物のレベルが変化することもな
い。 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. In other words, when filling a container with contents such as fruit juice and carbonated drinks, the internal pressure of the container is sealed and the contents are sterilized by showering boiling water onto the container from above. However, in each of the above-described embodiments, by having the above-described configuration, even in such a case, the bottom portion can sufficiently withstand the above-mentioned internal pressure without inverting. Therefore, the level of the contents does not change.
また上記各実施例では、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側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つて、各リブの凹陥部
に対して略垂直な方向の曲げ応力が大となつて、
底部の面剛性を高くすることができる。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 generally inverted U-shape on the side end surface extend radially from the concave portion to the side stump through the contact surface portion on the bottom portion and protrude inward. By forming the rib, the bending stress in the direction substantially perpendicular to the concave portion of each rib becomes large.
The surface rigidity of the bottom can be increased. As a result, even in a heated atmosphere, the bottom part does not turn over in a shorter time than in the conventional example, and it is possible to stably maintain an upright state for a long time, without degrading the 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ツ
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、３
ａ……側壁端部、４……底部、５……凹陥部、６
……接面部、７……リブ。
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 vertical sectional view of the bottom of the same embodiment, and FIG. 3 is a line A-A in FIG. 2.
4 is a sectional view taken along 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 line C-C in FIG. 5. 7 is a vertical sectional view showing the bottom of the first conventional example, FIG. 8 is a vertical sectional view showing the bottom of the second conventional example, and FIG. 9 is a sectional view taken along line D-D in FIG. 8. . Explanation of symbols, 1...Container body, 3...Side wall, 3
a...Side wall end, 4...Bottom, 5...Concave portion, 6
...Touching surface, 7...Rib.
Claims (1)
有する耐圧プラスチツク容器において、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、凹陥部から内部に向けて略垂
直に突出する一対の突出壁と当該突出壁の内端を
接続した接続壁とを有する側断面略逆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
スチツク容器。1. A pressure-resistant plastic container having a side wall and a bottom located at the end of the side wall, the bottom having a recess that bulges inward, and a contact that surrounds the recess and protrudes toward the end of the side wall. a pair of projecting walls extending radially from the recess through the contact surface to the end of the side wall and protruding substantially vertically inward from the recess, and a connecting wall connecting the inner ends of the projecting walls; 1. A pressure-resistant plastic container characterized by forming a plurality of ribs having a substantially inverted U-shaped side cross section.
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 JPH0199949A (en) | 1989-04-18 |
| JPH0339897B2 true 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) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5024340A (en) * | 1990-07-23 | 1991-06-18 | Sewell Plastics, Inc. | Wide stance footed bottle |
| 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 |
| 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 |
| 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 |
| FR2919579B1 (en) * | 2007-07-30 | 2011-06-17 | Sidel Participations | CONTAINER COMPRISING A BACKGROUND 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 |
| JP6397652B2 (en) * | 2014-04-30 | 2018-09-26 | 株式会社吉野工業所 | Bottle |
| DE102016002154A1 (en) * | 2016-02-19 | 2017-08-24 | Pumperlgsund GmbH | Plastic bottle and use of the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4977005A (en) * | 1979-11-27 | 1990-12-11 | The Continental Group, Inc. | Ribbed preform for use in the blow molding of a plastic material container |
| 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
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0199949A (en) | 1989-04-18 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |