JPH07165224A - Synthetic resin container - Google Patents
Synthetic resin containerInfo
- Publication number
- JPH07165224A JPH07165224A JP31167393A JP31167393A JPH07165224A JP H07165224 A JPH07165224 A JP H07165224A JP 31167393 A JP31167393 A JP 31167393A JP 31167393 A JP31167393 A JP 31167393A JP H07165224 A JPH07165224 A JP H07165224A
- Authority
- JP
- Japan
- Prior art keywords
- container
- synthetic resin
- diameter
- resin container
- maximum
- 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.)
- Pending
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—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
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば炭酸含有飲料水
や清涼飲料水等を充填するのに好適で、薄肉な合成樹脂
製容器に関するものであり、特に耐内圧に対して優れた
作用を奏する合成樹脂製容器を提供するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin synthetic resin container, which is suitable for filling carbonated water, soft drink, etc., and has an excellent effect on internal pressure resistance. The present invention provides a container made of synthetic resin.
【０００２】[0002]
【従来の技術】従来、炭酸含有飲料水を充填する合成樹
脂製容器は、ほぼ球状の容器肩部と円筒状の容器胴部と
ペタロイド形の容器底部から構成されており、内圧に対
して該容器肩部及び該容器胴部は引っ張り応力のみをほ
ぼ均一に受けるものである。一方、該合成樹脂製容器は
二軸延伸ブロー成形で成形されるので樹脂が二方向に配
向し、優れた引っ張り強度を持つものであり、耐内圧に
対して変形が少なく、肉厚を薄くすることができる。2. Description of the Related Art Conventionally, a synthetic resin container filled with carbonated drinking water is composed of a substantially spherical container shoulder, a cylindrical container body, and a petaloid container bottom. The container shoulder and the container body receive the tensile stress almost uniformly. On the other hand, since the synthetic resin container is formed by biaxial stretch blow molding, the resin is oriented in two directions and has an excellent tensile strength, which is less likely to be deformed by internal pressure resistance and has a reduced wall thickness. be able to.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、該合成
樹脂製容器は、耐内圧に対して優れた作用を持つものが
要求され、このために、該容器の胴部は、その下方に該
合成樹脂製容器の最大径より小さい径のピンチ部を有す
る形状が所望されているが、該形状の容器胴部は内圧に
対して引っ張り応力以外、例えば、剪断応力及び圧縮応
力を受けるため、該合成樹脂製容器全体の応力分布の均
一性がくずれ、該合成樹脂製容器の変形が大きくなる。
その結果、所望する形状が維持出来なくなるといった欠
点がある。この欠点に対し、厚肉にすることが考えられ
るがコスト高となるといた問題がある。 本発明は、合
成樹脂製容器の線形の構造解析により、該合成樹脂製容
器の胴部の最大径に対する該ピンチの径の比がある範囲
内であると、内圧に対する最大応力値が極端に減少する
ことを見い出し本発明に至った。However, the synthetic resin container is required to have an excellent action against internal pressure, and for this reason, the body portion of the container has the synthetic resin below it. A shape having a pinch portion with a diameter smaller than the maximum diameter of the container made is desired, but since the container body of the shape is subjected to internal stress other than tensile stress, for example, shear stress and compressive stress, the synthetic resin The homogeneity of the stress distribution of the entire container is lost, and the deformation of the synthetic resin container becomes large.
As a result, there is a drawback that the desired shape cannot be maintained. In order to solve this drawback, it is conceivable to make the wall thick, but there is a problem that the cost becomes high. According to a linear structural analysis of a synthetic resin container, the present invention shows that when the ratio of the diameter of the pinch to the maximum diameter of the body of the synthetic resin container is within a certain range, the maximum stress value with respect to the internal pressure is extremely reduced. The present invention was found out by doing so.
【０００４】[0004]
【課題を解決するための手段】すなわち本発明は、ほぼ
円筒形の容器胴部、及びペタロイド形の容器底部を有す
る二軸延伸ブロー成形された薄肉の合成樹脂製容器で、
該容器胴部はその下方に該合成樹脂製容器の容器胴部の
最大径より小さい径のピンチ部を有し、該最大径に対す
る該ピンチ部の径の比が７５〜９０％であることを特徴
とする合成樹脂製容器である。That is, the present invention provides a biaxially stretch blow molded thin-walled synthetic resin container having a substantially cylindrical container body and a petaloid container bottom.
The container body has a pinch portion below the maximum diameter of the container body of the synthetic resin container, and the ratio of the diameter of the pinch portion to the maximum diameter is 75 to 90%. A characteristic synthetic resin container.
【０００５】以下、本発明を図面に基づいて具体的に説
明する。図１に示される本発明の合成樹脂製容器１は上
端頚部２を有し、該上端頚部２は容器肩部３に合致し、
該容器肩部３はコンケーブ４とフルート５から構成され
ている。また該容器肩部３は容器胴部６に合致し、該容
器胴部６の上方には容器樽状部７が構成されている。該
容器胴部の中方及び下方は、該コンケーブ４とフルート
５から構成され、該容器胴部６の下方にはピンチ部８を
有し、該ピンチ部の径９は該容器胴部の最大径１０より
も小さく、該容器胴部６の下端はペタロイド形状の容器
底部１１の上端と合致している。該最大径１０に対する
該ピンチ部の径９の比は７５〜９０％が好ましく、この
範囲内では内圧に対する該容器１の応力分布の最大応力
を極端に減少することができる。本発明において、ペタ
ロイド形とは、二軸延伸された容器本体の下方に、突出
した曲面底及び該曲面底の周辺部に該曲面底を一体的に
下方に突出させて、設けた壜本体を自立させる複数の中
空の脚部を有する二軸延伸された底部をいう。The present invention will be specifically described below with reference to the drawings. The synthetic resin container 1 of the present invention shown in FIG. 1 has an upper neck portion 2, which coincides with a container shoulder portion 3,
The container shoulder 3 comprises a concave 4 and a flute 5. Further, the container shoulder 3 matches the container body 6, and a container barrel 7 is formed above the container body 6. The inside and the bottom of the container body is composed of the concave 4 and the flute 5, and a pinch portion 8 is provided below the container body 6, and the diameter 9 of the pinch portion is the maximum diameter of the container body. It is smaller than 10, and the lower end of the container body 6 coincides with the upper end of a petaloid-shaped container bottom 11. The ratio of the diameter 9 of the pinch portion to the maximum diameter 10 is preferably 75 to 90%, and within this range, the maximum stress of the stress distribution of the container 1 with respect to the internal pressure can be extremely reduced. In the present invention, the petaloid shape refers to a bottle body provided below a container body that has been biaxially stretched, a protruding curved bottom and a peripheral portion of the curved bottom that integrally projects the curved bottom downward. A biaxially stretched bottom having a plurality of self-standing hollow legs.
【０００６】本発明の容器の製造のための樹脂として
は、飽和ポリエステル樹脂及びその共重合体を使用する
ことができる。As the resin for producing the container of the present invention, saturated polyester resin and its copolymer can be used.
【０００７】本発明の合成樹脂製容器を得る方法は、従
来の二軸延伸ブロー成形法と同一の方法が用いられる。As the method for obtaining the synthetic resin container of the present invention, the same method as the conventional biaxial stretching blow molding method is used.
【０００８】本発明の合成樹脂製容器に炭酸含有飲料水
が充填されたとき、該合成樹脂製容器全体に掛かる応力
の最大応力値が低いことが好ましく、この値が低いこと
は、内圧による変形が小さく、所望する形状が維持でき
ていることになる。When the synthetic resin container of the present invention is filled with carbonated drinking water, it is preferable that the maximum stress value of the stress applied to the entire synthetic resin container is low. Is small and the desired shape can be maintained.
【０００９】[0009]
【実施例】以下実施例により本発明を詳細に説明する。The present invention will be described in detail with reference to the following examples.
【００１０】実施例１ 線形の構造解析（ｉＳｉＤ社、Ｉ−ＤＥＡＳ ＶＩ）を
使用し、図１の形状の容器（全長３０５ｍｍ、胴径９８
ｍｍ、内容量１５００ｍｌ）において、胴部の最大径に
対するピンチ部の径をそれぞれ、９０，８５，８０，７
５％としたモデリングをし、以下の条件で計算し、全メ
ッシュ中の最大応力値を求めた。その結果を図２に示
す。図２より比が７５〜９０％の範囲で最大応力値の減
少が見られた。 肉厚：０．３ｍｍ均一 メッシュサイズ：１０ｍｍ 拘束条件：上端頚部を全体固定 拘束条件：一定内圧 ０．０５Ｋｇｆ／ｃｍ2 ヤング率：１６６Ｋｇｆ／ｍｍ2 ポアソン比：０．４４ 要素の種類：板要素 要素の数：４５３０Example 1 Using a linear structure analysis (I-DEAS VI, iSiD Co.), a container having the shape shown in FIG. 1 (total length 305 mm, barrel diameter 98)
mm, inner volume 1500 ml), the diameter of the pinch portion with respect to the maximum diameter of the body portion is 90, 85, 80, 7 respectively.
Modeling was performed with 5%, calculation was performed under the following conditions, and the maximum stress value in all meshes was obtained. The result is shown in FIG. From FIG. 2, a reduction in the maximum stress value was observed in the ratio range of 75 to 90%. Thickness: 0.3 mm Uniform mesh size: 10 mm Constraint condition: The upper neck is fixed as a whole Constraint condition: Constant internal pressure 0.05 Kgf / cm 2 Young's modulus: 166 Kgf / mm 2 Poisson's ratio: 0.44 Element type: Plate element Number of: 4530
【００１１】比較例１ 実施例１において、胴部の最大径に対するピンチ部の径
の比を９５，７０％とモデリングした以外は同様に行っ
たが、最大応力値が高かった。その結果を図２に示す。Comparative Example 1 The same procedure as in Example 1 was carried out except that the ratio of the diameter of the pinch portion to the maximum diameter of the body portion was modeled as 95, 70%, but the maximum stress value was high. The result is shown in FIG.
【００１２】[0012]
【発明の効果】以上の発明から明らかなように、本発明
は、胴部の最大径に対するピンチ部の径の比を限定する
ことで、内圧が掛かった時の容器の最大応力値を減少
し、より変形の小さい容器を提供することが出来る。As is apparent from the above invention, the present invention limits the ratio of the diameter of the pinch portion to the maximum diameter of the body portion to reduce the maximum stress value of the container when internal pressure is applied. It is possible to provide a container with a smaller deformation.
【図１】本発明の合成樹脂製容器の正面図である。FIG. 1 is a front view of a synthetic resin container of the present invention.
【図２】本発明の実施例１の結果である。FIG. 2 shows the results of Example 1 of the present invention.
１ 合成樹脂製容器 ２ 上端頚部 ３ 容器肩部 ４ コンケーブ ５ フルート ６ 容器胴部 ７ 容器樽状部 ８ ピンチ部 ９ ピンチ部の径 １０ 胴部の最大径 １１ 容器底部 1 Synthetic Resin Container 2 Upper Neck 3 Container Shoulder 4 Concave 5 Flute 6 Container Body 7 Container Barrel 8 Pinch 9 Pinch Diameter 10 Maximum Diameter 11 Container Bottom
Claims (1)
の容器底部を有する二軸延伸ブロー成形された薄肉の合
成樹脂製容器で、該容器胴部はその下方に該合成樹脂製
容器の容器胴部の最大径より小さい径のピンチ部を有
し、該最大径に対する該ピンチ部の径の比が７５〜９０
％であることを特徴とする合成樹脂製容器。1. A biaxially stretch blow-molded thin-walled synthetic resin container having a substantially cylindrical container body and a petaloid-shaped container bottom, and the container body below which is made of the synthetic resin container. It has a pinch portion having a diameter smaller than the maximum diameter of the body portion, and the ratio of the diameter of the pinch portion to the maximum diameter is 75 to 90.
%, A synthetic resin container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31167393A JPH07165224A (en) | 1993-12-13 | 1993-12-13 | Synthetic resin container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31167393A JPH07165224A (en) | 1993-12-13 | 1993-12-13 | Synthetic resin container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07165224A true JPH07165224A (en) | 1995-06-27 |
Family
ID=18020100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31167393A Pending JPH07165224A (en) | 1993-12-13 | 1993-12-13 | Synthetic resin container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07165224A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829290A (en) * | 1996-02-14 | 1998-11-03 | Crown Cork & Seal Technologies Corporation | Reshaping of containers |
| US5832766A (en) * | 1996-07-15 | 1998-11-10 | Crown Cork & Seal Technologies Corporation | Systems and methods for making decorative shaped metal cans |
| US5938389A (en) * | 1996-08-02 | 1999-08-17 | Crown Cork & Seal Technologies Corporation | Metal can and method of making |
| US5960659A (en) * | 1995-10-02 | 1999-10-05 | Crown Cork & Seal Company, Inc. | Systems and methods for making decorative shaped metal cans |
| JP2007062800A (en) * | 2005-08-31 | 2007-03-15 | Yoshino Kogyosho Co Ltd | Synthetic resin bottle |
| JP2008030856A (en) * | 2006-06-29 | 2008-02-14 | Fuji Seal International Inc | Heat shrinkable tubular label |
| JP2011225259A (en) * | 2010-04-21 | 2011-11-10 | Hokkai Can Co Ltd | Beverage can body |
-
1993
- 1993-12-13 JP JP31167393A patent/JPH07165224A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5960659A (en) * | 1995-10-02 | 1999-10-05 | Crown Cork & Seal Company, Inc. | Systems and methods for making decorative shaped metal cans |
| US5829290A (en) * | 1996-02-14 | 1998-11-03 | Crown Cork & Seal Technologies Corporation | Reshaping of containers |
| US5832766A (en) * | 1996-07-15 | 1998-11-10 | Crown Cork & Seal Technologies Corporation | Systems and methods for making decorative shaped metal cans |
| US5970767A (en) * | 1996-07-15 | 1999-10-26 | Crown Cork & Seal Technologies Corporation | Systems and methods for making decorative shaped metal cans |
| US5938389A (en) * | 1996-08-02 | 1999-08-17 | Crown Cork & Seal Technologies Corporation | Metal can and method of making |
| JP2007062800A (en) * | 2005-08-31 | 2007-03-15 | Yoshino Kogyosho Co Ltd | Synthetic resin bottle |
| JP4730716B2 (en) * | 2005-08-31 | 2011-07-20 | 株式会社吉野工業所 | Synthetic resin housing |
| JP2008030856A (en) * | 2006-06-29 | 2008-02-14 | Fuji Seal International Inc | Heat shrinkable tubular label |
| JP2011225259A (en) * | 2010-04-21 | 2011-11-10 | Hokkai Can Co Ltd | Beverage can body |
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