JPH08207920A - Pressure-proof self-standing bottle - Google Patents

Pressure-proof self-standing bottle

Info

Publication number
JPH08207920A
JPH08207920A JP1899395A JP1899395A JPH08207920A JP H08207920 A JPH08207920 A JP H08207920A JP 1899395 A JP1899395 A JP 1899395A JP 1899395 A JP1899395 A JP 1899395A JP H08207920 A JPH08207920 A JP H08207920A
Authority
JP
Japan
Prior art keywords
shoulder
thickness
neck
ribs
minimum thickness
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
Application number
JP1899395A
Other languages
Japanese (ja)
Inventor
Norihiro Shimizu
紀弘 清水
Koji Nakajima
康次 中島
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.)
Denka Co Ltd
Original Assignee
Denki Kagaku Kogyo KK
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 Denki Kagaku Kogyo KK filed Critical Denki Kagaku Kogyo KK
Priority to JP1899395A priority Critical patent/JPH08207920A/en
Publication of JPH08207920A publication Critical patent/JPH08207920A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D1/00Containers 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
    • B65D1/02Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223Bottles 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)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To improve strength against internal pressure and reduce creep deformation arid drop of a fill point by controlling a thickness distribution so that inner thickness of respective bottle parts satisfies a specific relation. CONSTITUTION: At least parts except a mouth 2 and a neck 3 are biaxially drawn, while a holder 4 comprises an arc expanding inward and an arc expanding outward. A plurality of ribs 7 are also placed on the shoulder 4, while a body 8 comprises a lower body part 9B having ribs 1 connected to an approximately cylindrical side wall and an upper body part 9A having no ribs 7. A pinch part 10 having a small diameter is provided at the lower body part, while a bottom 11 is basically a recess swelling downward, and further a plurality of approximately triangular-pyramid-shaped legs 13 are radially provided from the recess. Minimum thickness A of the shoulder 4, minimum thickness B of the upper body part 9A, maximum thickness C of the pinch part 10 and minimum thickness D of the bottom 11 are formed to satisfy such relations that A/B=0.8/1 to 1.1/1, C/B=1/1 to 1.8/1, and D/B=0.7/1 to 1.1/1.

Description

【発明の詳細な説明】Detailed Description of the Invention

【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飽和ポリエ
ステル樹脂製の二軸延伸された耐圧自立型ボトルに関す
るもので、更に詳言すれば、ボトル肉厚分布を制御する
ことにより、高い耐内圧強度を有し、肩部及び胴部での
変形が緩和され、肩部と胴部のクリープ変形及び入味線
の低下を緩和し、かつ、ボトル重量を軽量化できる耐圧
自立型ボトルに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biaxially stretched pressure resistant self-supporting bottle made of a thin saturated polyester resin which is suitable for filling carbonated water, soft drink, etc. In other words, by controlling the bottle wall thickness distribution, it has high internal pressure resistance, the deformation at the shoulder and the body is reduced, and the creep deformation at the shoulder and the body and the deterioration of the flavor line are reduced. In addition, the present invention relates to a pressure resistant self-supporting bottle capable of reducing the weight of the bottle.

【0002】[0002]

【従来の技術】従来、炭酸含有飲料水を充填する耐圧自
立型ボトルは、図2に示すごとく、上端が開放口縁部1
とされている口頸部2とほぼ球形の肩部と円筒状の胴部
と下方に膨出した凹形を基本とし、前記凹形部分から下
方に膨出したほぼ三角錐台形状の脚部が複数個放射状に
設けられている底部から構成されている。又、最近、ガ
ラス壜のデザインにより近く、胴部に複数のリブとピン
チを有し、なで肩のボトル形状のものが、最終消費者に
強く望まれている。しかしながら、該形状のボトルに炭
酸水が充填され、内圧が掛かった時に、特に内方にくぼ
んでいる肩部、リブ、ピンチ、底部は引っ張り応力以
外、例えば剪断応力、圧縮応力及び曲げ応力等を受ける
ため、耐圧自立型ボトルの応力分布がくずれ、クリープ
変形が大きくなり、入り味線低下量が大きくなるといっ
た問題がある。この対策として、ボトルの重量を重くす
ることが考えられるが、コスト高になる欠点がある。
2. Description of the Related Art Conventionally, a pressure resistant self-supporting bottle filled with carbonated drinking water has an open top edge 1 as shown in FIG.
Based on the mouth and neck 2, the substantially spherical shoulder, the cylindrical body, and the concave shape that bulges downward, the leg portion has a substantially triangular truncated pyramid shape that bulges downward from the concave portion. Are composed of a plurality of bottoms radially provided. In addition, recently, a bottle-shaped one having a plurality of ribs and pinches on the body and a shoulder-shaped bottle, which is closer to the design of a glass bottle, is strongly desired by the final consumer. However, when a bottle of the shape is filled with carbonated water and internal pressure is applied, the shoulders, ribs, pinches, and bottom, which are indented inward, have a tensile stress other than tensile stress, such as shear stress, compressive stress, and bending stress. As a result, there is a problem that the stress distribution of the pressure resistant self-supporting bottle collapses, creep deformation increases, and the amount of reduction in the penetration line increases. As a countermeasure against this, it is conceivable to increase the weight of the bottle, but there is a drawback that the cost becomes high.

【0003】[0003]

【発明が解決しようとする課題】本発明者等は、飽和ポ
リエステル樹脂製の二軸延伸成形されたボトルにおい
て、前記した問題点を解決しようと努め、肩部には等間
隔に形成された軸方向に延びる複数のリブが設置されて
おり、胴部は前記肩部から連続するほぼ円筒形側壁から
なり、連続して軸方向に等間隔に形成された複数のリブ
のある胴部下方部と該リブがない胴部上方部から構成さ
れ、かつ胴部下方部に胴部の径の中で小さい径のピンチ
部を有し、かつ、前記底部は、下方に膨出した凹形を基
本とし、更に、前記凹形から下方に膨出したほぼ三角錐
台形状の脚部が、前記凹形から複数個放射状に設けら
れ、肩部の最小肉厚A、胴部上方部の最小肉厚B、ピン
チ部の最大肉厚C及び底部の最小肉厚Dが特定の関係を
満たす数である耐圧自立型ボトルに到達した。すなわ
ち、本発明は、ボトルの肉厚分布を制御することによ
り、高い耐内圧強度を有し、肩部及び胴部での変形が緩
和され、肩部と胴部のクリープ変形及び入味線の低下を
緩和し、かつ、ボトル重量を軽量化できる耐圧自立型ボ
トルを提供することを目的としたものである。
DISCLOSURE OF THE INVENTION The present inventors have endeavored to solve the above-mentioned problems in a biaxially stretch-molded bottle made of a saturated polyester resin, and shafts formed at equal intervals on the shoulders. A plurality of ribs extending in the direction, the body portion is composed of a substantially cylindrical side wall continuous from the shoulder portion, and a lower portion of the body portion having a plurality of ribs continuously formed at equal intervals in the axial direction. It is composed of an upper part of the body without the ribs, has a pinch part of a smaller diameter in the lower part of the body part, and the bottom part is basically a downwardly bulging concave shape. Further, a plurality of substantially triangular truncated pyramid-shaped leg portions bulging downward from the concave shape are provided radially from the concave shape, and the minimum wall thickness A of the shoulder portion and the minimum wall thickness B of the upper portion of the body portion are provided. , The maximum thickness C of the pinch portion and the minimum thickness D of the bottom portion are numbers that satisfy a specific relationship. It has been reached on the type bottle. That is, the present invention, by controlling the thickness distribution of the bottle, has a high internal pressure resistance, the deformation in the shoulder and the body is alleviated, the creep deformation of the shoulder and the body and the reduction of the flavor line. It is an object of the present invention to provide a pressure resistant self-supporting bottle capable of alleviating the above and reducing the weight of the bottle.

【0004】[0004]

【課題を解決するための手段】本発明の第1の発明は、
飽和ポリエステル樹脂製の二軸延伸成形されたボトルで
あって、(a)上端が開放口縁部とされている口頸部、
(b)前記口頸部に連続する首部、(c)前記首部に連
続する肩部、(d)前記肩部に連続する胴部及び(e)
胴部の下方開放部を閉塞する底部を有し、(イ)少なく
とも前記口頸部と前記首部以外の部分は二軸延伸されて
おり、かつ、(ロ)前記肩部は前記首部から拡がって前
記肩部と結合する内方に張り出した円弧と前記円弧と連
続した外方に張り出した円弧から構成され、かつ、
(ハ)前記肩部には等間隔に形成された軸方向に延びる
複数のリブが設置されており、(ニ)前記胴部は前記肩
部から連続するほぼ円筒形側壁からなり、連続して軸方
向に等間隔に形成された複数のリブのある胴部下方部と
該リブがない胴部上方部から構成され、かつ胴部下方部
に胴部の径の中で小さい径のピンチ部を有し、(ホ)前
記底部は、下方に膨出した凹形を基本とし、更に、前記
凹形から下方に膨出したほぼ三角錐台形状の脚部が、前
記凹形から複数個放射状に設けられ、(ヘ)肩部の最小
肉厚A、胴部上方部の最小肉厚B、ピンチ部の最大肉厚
C及び底部の最小肉厚Dが下記の関係を満たす数である
ことを特徴とする耐圧自立型ボトルである。本発明の第
2の発明は、肩部の最小肉厚Aの部分、胴部上方部の最
小肉厚Bの部分、ピンチ部の最大肉厚Cの部分及び底部
の最小肉厚Dの部分の密度が1.36g/cm3以上で
ある第1の発明記載の耐圧自立型ボトルである。
The first invention of the present invention is as follows:
A biaxially stretched bottle made of a saturated polyester resin, comprising: (a) a mouth-neck portion whose upper end is an open mouth edge portion,
(B) a neck continuous with the mouth and neck, (c) a shoulder continuous with the neck, (d) a trunk continuous with the shoulder, and (e)
It has a bottom portion that closes the lower open portion of the body portion, (a) at least the portion other than the mouth and neck portion and the neck portion is biaxially stretched, and (b) the shoulder portion extends from the neck portion. It is composed of an inwardly projecting circular arc that is connected to the shoulder portion and an outwardly projecting circular arc that is continuous with the circular arc, and
(C) A plurality of ribs formed at equal intervals and extending in the axial direction are installed on the shoulder portion, and (d) the body portion is formed of a substantially cylindrical side wall continuous from the shoulder portion, and continuously formed. A lower part of the body part having a plurality of ribs formed at equal intervals in the axial direction and an upper part of the body part without the ribs, and a pinch part having a smaller diameter among the diameters of the body part is provided in the lower part of the body part. (E) The bottom portion is basically a concave shape that bulges downward, and further, a plurality of substantially triangular truncated pyramid-shaped leg portions that bulge downward from the concave shape radiate from the concave shape. (F) The minimum thickness A of the shoulder portion, the minimum thickness B of the upper portion of the body portion, the maximum thickness C of the pinch portion, and the minimum thickness D of the bottom portion are numbers satisfying the following relations. It is a pressure resistant self-supporting bottle. A second invention of the present invention is that the minimum thickness A of the shoulder portion, the minimum thickness B of the upper body portion, the maximum thickness C of the pinch portion, and the minimum thickness D of the bottom portion. The pressure resistant self-supporting bottle according to the first invention has a density of 1.36 g / cm 3 or more.

【0005】以下、本発明を詳細に説明する。図1に本
発明の耐圧自立型ボトルの正面図を示す。本発明の耐圧
自立型ボトルは、飽和ポリエステル樹脂製の二軸延伸成
形されたボトルであって、(a)上端が開放口縁部1と
されている口頸部2、(b)前記口頸部2に連続する首
部3、(c)前記首部3に連続する肩部4、(d)前記
肩部4に連続する胴部8及び(e)胴部8の下方開放部
を閉塞する底部11を有し、前記口頸部1と前記首部3
以外の部分は二軸延伸されており、かつ、前記肩部4は
前記首部3から拡がって前記肩部4と結合する内方に張
り出した大きな半径R1の円弧と前記円弧と連続した外
方に張り出した半径R2の円弧から構成され、かつ、前
記肩部4には等間隔に形成された軸方向に延びる複数の
リブ7が設置されている。前記胴部8は前記肩部から連
続するほぼ円筒形側壁からなり、連続して軸方向に等間
隔に形成された複数のリブ7のある胴部下方部9Aと該
リブがない胴部上方部9Bから構成され、かつ胴部下方
部9Bに胴部の径の中で小さい径のピンチ部10を有
し、前記底部は、下方に膨出した凹形を基本とし、更
に、前記凹形から下方に膨出したほぼ三角錐台形状の脚
部が、前記凹形から複数個放射状に設けられている。
The present invention will be described in detail below. FIG. 1 shows a front view of a pressure resistant self-supporting bottle of the present invention. The pressure resistant self-supporting bottle of the present invention is a biaxially stretched bottle made of a saturated polyester resin, and has (a) a mouth neck portion 2 having an open top edge portion 1 and (b) the mouth neck portion. A neck 3 continuous with the portion 2, (c) a shoulder 4 continuous with the neck 3, (d) a body 8 continuous with the shoulder 4, and (e) a bottom 11 for closing the lower opening of the body 8. Having the mouth and neck 1 and the neck 3
The other portions are biaxially stretched, and the shoulder portion 4 extends from the neck portion 3 and extends inwardly to connect with the shoulder portion 4 and has a large radius R1 and an outwardly continuous arc. The shoulder 4 is provided with a plurality of ribs 7 which are formed at equal intervals and extend in the axial direction, the ribs 7 being formed of an arc having a radius R2. The body portion 8 is composed of a substantially cylindrical side wall continuous from the shoulder portion, and has a body portion lower portion 9A having a plurality of ribs 7 continuously formed at equal intervals and a body portion upper portion having no ribs. 9B and has a pinch portion 10 having a smaller diameter than the diameter of the body portion on the lower portion 9B of the body portion, and the bottom portion is basically a downwardly bulging concave shape. A plurality of substantially triangular truncated pyramid-shaped legs that bulge downward are provided radially from the concave shape.

【0006】本発明において、肩部の最小肉厚A/胴部
上方部の最小肉厚Bは、0.8/1〜1.1/1であ
り、好ましくは0.85/1〜1.1/1であり、特に
このましくは0.9/1〜1.1/1である。0.8/
1以下であると肩部4が薄肉となり肩部4のクリープ変
形が大きくなる。1.1/1以上となると肩部4は厚肉
となって肩部4のクリープ変形は小さくなるが肩部4よ
りも下部が薄肉となりボトル全体のクリープ変形が大き
くなる。
In the present invention, the minimum thickness A of the shoulder portion / the minimum thickness B of the upper portion of the body portion is 0.8 / 1 to 1.1 / 1, preferably 0.85 / 1 to 1. 1/1, and particularly preferably 0.9 / 1 to 1.1 / 1. 0.8 /
When it is 1 or less, the shoulder portion 4 becomes thin and the creep deformation of the shoulder portion 4 becomes large. When it is 1.1 / 1 or more, the shoulder portion 4 becomes thicker and the creep deformation of the shoulder portion 4 becomes smaller, but the lower portion than the shoulder portion 4 becomes thin and the creep deformation of the entire bottle becomes large.

【0007】本発明において、ピンチ部の最大肉厚C/
胴部上方部の最小肉厚Bは、1/1〜1.8/1であ
り、好ましくは1.1/1〜1.7/1であり、特に好
ましくは1.2/1〜1.5/1である。1/1以下で
あるとピンチ部10が薄肉となり、ピンチ部10のクリ
ープ変形が大きくなり、1.8/1以上ではの特に肩部
4が薄肉となり肩部4のクリープ変形が大きくなる。
In the present invention, the maximum thickness C / of the pinch portion is
The minimum thickness B of the upper part of the body is 1/1 to 1.8 / 1, preferably 1.1 / 1 to 1.7 / 1, and particularly preferably 1.2 / 1 to 1. It is 5/1. When it is 1/1 or less, the pinch portion 10 becomes thin, and the creep deformation of the pinch portion 10 becomes large. When it is 1.8 / 1 or more, especially the shoulder portion 4 becomes thin and the creep deformation of the shoulder portion 4 becomes large.

【0008】本発明において、底部の最小肉厚D/胴部
上方部の最小肉厚Bは、0.7/1〜1.1/1であ
り、好ましくは0.8/1〜1.1/1であり、特に好
ましくは0.9/1〜1.1/1である。0.7/1以
下であると底部11のクリープ変形が大きくなりロッカ
ーボトムが発生し易くなる。1.1以上であると胴部8
と肩部4が薄肉となりクリープ変形が大きくなる。
In the present invention, the minimum wall thickness D at the bottom / the minimum wall thickness B at the upper part of the body is 0.7 / 1 to 1.1 / 1, preferably 0.8 / 1 to 1.1. / 1, and particularly preferably 0.9 / 1 to 1.1 / 1. When it is 0.7 / 1 or less, the creep deformation of the bottom portion 11 becomes large, and rocker bottom is likely to occur. Body part 8 is 1.1 or more
As a result, the shoulder portion 4 becomes thin and creep deformation increases.

【0009】本発明の耐圧自立型ボトルは、少なくとも
肩部4と胴部8と底部11は二軸延伸されており、肩部
4の最小肉厚Aの部分、胴部上方部の最小肉厚Bの部
分、ピンチ部の最大肉厚Cの部分及び底部の最小肉厚D
の部分の密度が1.36g/cm3以上であることが好
ましい。密度を1.36g/cm3未満にすると、配向
により得られる強度が不十分となり内圧による変形が大
きくなる。
In the pressure resistant self-supporting bottle of the present invention, at least the shoulder part 4, the body part 8 and the bottom part 11 are biaxially stretched, and the minimum wall thickness A of the shoulder part 4 and the minimum wall thickness of the upper part of the body part. B part, pinch part maximum wall thickness C part and bottom minimum wall thickness D
It is preferable that the density of the portion is 1.36 g / cm 3 or more. When the density is less than 1.36 g / cm 3 , the strength obtained by the orientation becomes insufficient and the deformation due to the internal pressure becomes large.

【0010】本発明の耐圧自立型ボトルを製造する方法
は、射出成形にて得られたプリフォームを加熱し、所望
のボトル形状に対応した形状を有する成形金型内にセッ
トし、延伸ロッドで長手方向に延伸した後、あるいは延
伸と同時にブローエアーを行いボトル成形し耐圧自立型
ボトルを得るものである。
The method for producing a pressure-resistant self-supporting bottle of the present invention comprises heating a preform obtained by injection molding, setting the preform in a molding die having a shape corresponding to a desired bottle shape, and using a stretching rod. After stretching in the longitudinal direction, or at the same time as stretching, blow air is performed to mold the bottle to obtain a pressure-resistant self-standing bottle.

【0011】本発明の耐圧自立型ボトルの各部分の肉厚
は、プリフォームの形状、ブロー成形時のプリフォーム
の温度・延伸ロッドの圧力等を調整することで制御する
ことが出来る。
The wall thickness of each part of the pressure resistant self-supporting bottle of the present invention can be controlled by adjusting the shape of the preform, the temperature of the preform during blow molding, the pressure of the drawing rod, and the like.

【0012】本発明の耐圧自立型ボトルの製造に用いら
れる樹脂としては、飽和ポリエステル樹脂及びその共重
合体がある。
The resin used for producing the pressure resistant self-supporting bottle of the present invention includes a saturated polyester resin and a copolymer thereof.

【0013】本発明の耐圧自立型ボトルの底部11の凹
形部12はほぼ半球状であってもよく、または凹形部1
2の下端に水平部14があってもよく、更に、該水平部
14の中心に凸形の部分があってもよい。
The concave portion 12 of the bottom 11 of the pressure resistant self-supporting bottle of the present invention may be substantially hemispherical, or the concave portion 1
A horizontal portion 14 may be provided at the lower end of 2, and a convex portion may be provided at the center of the horizontal portion 14.

【0014】本発明の耐圧自立型ボトルは、炭酸含有飲
料が充填された時に、入り味線の低下量が小さく、かつ
ロッカーボトムが発生しないものである。
The pressure-resistant self-supporting bottle of the present invention is such that when the carbonated beverage is filled, the amount of reduction in the flavor line is small and rocker bottom does not occur.

【0015】[0015]

【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.

【0016】実施例1 日本ユニペット社製ポリエチレンテレフタレート樹脂
(RTー553C)を使用し、射出成形機にて、重量4
9gのプリフォームを成形した。次に、プリフォームを
加熱し、二軸延伸ブロー成形機(コーポプラスト社LB
−01)で図3に示す耐圧自立型ボトル(容量1505
ml)を成形した(図3中の数値は、各部の寸法を示
し、単位はmmである)。この耐圧自立型ボトルに4.
0ヴォリユ ームの炭酸水を充填し、38℃のオーブンに
保管し、1日後と7日後の入り味線低下量及びロッカー
ボトムを評価した。その評価結果を表1及び表2に示
す。
Example 1 Polyethylene terephthalate resin (RT-553C) manufactured by Nippon Unipet Co., Ltd. was used and the weight was 4 by an injection molding machine.
9 g of preform was molded. Next, the preform is heated to a biaxial stretch blow molding machine (LB
-01) is a pressure resistant self-supporting bottle (capacity 1505) shown in FIG.
ml) was molded (the numerical values in FIG. 3 indicate the dimensions of each part, and the unit is mm). This pressure resistant self-supporting bottle has 4.
It was filled with 0 volume of carbonated water and stored in an oven at 38 ° C., and the amount of decrease in the taste line and rocker bottom after 1 day and 7 days were evaluated. The evaluation results are shown in Tables 1 and 2.

【0017】比較例1 実施例1において、やや肩部が厚肉になるようにブロー
成形条件を変更し、二軸延伸ブロー成形した以外は実施
例1と同様に行い耐圧自立型ボトルを成形した(図3に
示す)。その評価結果を表1及び表2に示す。 比較例2 実施例1において、やや底部が厚肉になるようにブロー
成形条件を変更し、二軸延伸ブロー成形した以外は実施
例と同様に行い耐圧自立型ボトルを成形した(図3に示
す)。その評価結果を表1及び表2に示す。
Comparative Example 1 A pressure resistant self-supporting bottle was molded in the same manner as in Example 1 except that the blow molding conditions were changed so that the shoulder portion was slightly thicker and the biaxial stretch blow molding was performed. (Shown in Figure 3). The evaluation results are shown in Tables 1 and 2. Comparative Example 2 A pressure resistant self-supporting bottle was molded in the same manner as in Example 1 except that the blow molding conditions were changed so that the bottom portion was slightly thicker and the biaxial stretch blow molding was performed (shown in FIG. 3). ). The evaluation results are shown in Tables 1 and 2.

【0018】評価方法は以下の通り行った。 1)肉厚 耐圧自立型ボトルの肩部、胴部上方部、及び底部の最小
肉厚とピンチの最大肉厚をマイクロメーターで測定し
た。 2)密度 硝酸カルシウム水溶液を用い、密度勾配管で測定した。 3)入り味線低下量 耐圧自立型ボトルの入り味線(開放口縁部の先端から5
0mm)から内容物の液面が低下した距離を測定した。
尚、単位はmm. 4)ロッカーボトム 底部の水平部が脚部の接地面よりも突出していないもの
を「発生なし」(良好)、突出しているものを「発生あ
り」(不良)とした。
The evaluation method was as follows. 1) Wall Thickness The minimum wall thickness of the shoulder portion, the upper portion of the body portion, and the bottom portion of the pressure resistant self-supporting bottle and the maximum wall thickness of the pinch were measured with a micrometer. 2) Density The density was measured with a density gradient tube using an aqueous solution of calcium nitrate. 3) Amount of drop in the taste line The pressure line of the pressure resistant self-supporting bottle (5 from the tip of the open mouth edge)
The distance at which the liquid level of the contents fell from 0 mm) was measured.
The unit is mm. 4) Rocker bottom If the horizontal part of the bottom part did not protrude from the ground contact surface of the leg part, it was defined as "no occurrence" (good), and if it protruded, "existence" (defective).

【0019】[0019]

【表1】 [Table 1]

【0020】[0020]

【表2】 [Table 2]

【0021】[0021]

【発明の効果】以上から明らかなように、本発明の耐圧
自立型ボトルは、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飽和ポリエステル樹脂製の
二軸延伸された耐圧自立型ボトルに関するもので、ボト
ル肉厚分布を制御することにより、高い耐内圧強度を有
し、肩部及び胴部での変形が緩和され、肩部と胴部のク
リープ変形及び入味線の低下を緩和し、かつ、ボトル重
量を軽量化できる耐圧自立型ボトルである。
As is apparent from the above, the pressure resistant self-supporting bottle of the present invention is biaxially stretched from a thin saturated polyester resin which is suitable for filling carbonated drinking water, soft drink, etc. This is a pressure resistant self-supporting bottle, which has a high internal pressure resistance by controlling the bottle thickness distribution, the deformation at the shoulder and the body is eased, and the creep deformation at the shoulder and the body and the taste line A pressure resistant self-supporting bottle that can alleviate the decrease and reduce the weight of the bottle.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の耐圧自立型ボトルの正面図である。FIG. 1 is a front view of a pressure resistant self-supporting bottle of the present invention.

【図2】従来の耐圧自立型ボトルの正面図である。FIG. 2 is a front view of a conventional pressure resistant self-supporting bottle.

【図3】本発明の実施例1、比較例1及び2の耐圧自立
型ボトルの正面図である。
FIG. 3 is a front view of pressure-resistant self-standing bottles of Example 1 and Comparative Examples 1 and 2 of the present invention.

【符号の説明】 1 開放口縁部 2 口頸部 3 首部 4 肩部 7 リブ 8 胴部 9A 胴部上方部 9B 胴部下方部 10 ピンチ部 11 底部 12 凹形部 13 脚部 14 水平部 R1 内方に張りだした円弧の半径 R1 外方に張りだした円弧の半径[Explanation of symbols] 1 Open mouth edge 2 Mouth neck 3 Neck 4 Shoulder 7 Rib 8 Body 9A Body upper part 9B Body lower part 10 Pinch part 11 Bottom part 12 Concave part 13 Leg part 14 Horizontal part R1 Radius of arc that extends inward R1 Radius of arc that extends outward

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 飽和ポリエステル樹脂製の二軸延伸成形
されたボトルであって、(a)上端が開放口縁部とされ
ている口頸部、(b)前記口頸部に連続する首部、
(c)前記首部に連続する肩部、(d)前記肩部に連続
する胴部及び(e)胴部の下方開放部を閉塞する底部を
有し、(イ)少なくとも前記口頸部と前記首部以外の部
分は二軸延伸されており、かつ、(ロ)前記肩部は前記
首部から拡がって前記肩部と結合する内方に張り出した
円弧と前記円弧と連続した外方に張り出した円弧から構
成され、かつ、(ハ)前記肩部には等間隔に形成された
軸方向に延びる複数のリブが設置されており、(ニ)前
記胴部は前記肩部から連続するほぼ円筒形側壁からな
り、連続して軸方向に等間隔に形成された複数のリブの
ある胴部下方部と該リブがない胴部上方部から構成さ
れ、かつ胴部下方部に胴部の径の中で小さい径のピンチ
部を有し、(ホ)前記底部は、下方に膨出した凹形を基
本とし、更に、前記凹形から下方に膨出したほぼ三角錐
台形状の脚部が、前記凹形から複数個放射状に設けら
れ、(ヘ)肩部の最小肉厚A、胴部上方部の最小肉厚
B、ピンチ部の最大肉厚C及び底部の最小肉厚Dが下記
の関係を満たす数であることを特徴とする耐圧自立型ボ
トル。 A/B=0.8/1〜1.1/1 C/B=1/1〜1.8/1 D/B=0.7/1〜1.1/1
1. A biaxially stretched bottle made of a saturated polyester resin, comprising: (a) a mouth neck portion whose upper end is an open mouth edge portion, (b) a neck portion continuous with the mouth neck portion,
(C) a shoulder portion continuous with the neck portion, (d) a body portion continuous with the shoulder portion, and (e) a bottom portion closing a lower opening portion of the body portion, and (a) at least the mouth and neck portion and the The portion other than the neck portion is biaxially stretched, and (b) the shoulder portion extends from the neck portion and extends inwardly extendingly from the neck portion, and the inwardly extending arc extends outwardly from the arc. And (c) a plurality of axially extending ribs formed at equal intervals are provided on the shoulder portion, and (d) the body portion is a substantially cylindrical side wall continuous from the shoulder portion. Consists of a lower part of the body part having a plurality of ribs continuously formed at equal intervals in the axial direction and an upper part of the body part without the ribs, and in the lower part of the body part of the diameter of the body part. (E) The bottom has a concave shape that bulges downward. A plurality of substantially triangular frustum-shaped legs that bulge downward from the concave portion are provided radially from the concave shape, and (f) the minimum thickness A of the shoulder portion, the minimum thickness B of the upper portion of the body portion, and the pinch portion. A pressure resistant self-supporting bottle characterized in that the maximum wall thickness C and the minimum wall thickness D of the bottom are numbers satisfying the following relationship. A / B = 0.8 / 1 to 1.1 / 1 C / B = 1/1 to 1.8 / 1 D / B = 0.7 / 1 to 1.1 / 1
【請求項2】 肩部の最小肉厚Aの部分、胴部上方部の
最小肉厚Bの部分、ピンチ部の最大肉厚Cの部分及び底
部の最小肉厚Dの部分の密度が1.36g/cm3以上
であることを特徴とする請求項1記載の耐圧自立型ボト
ル。
2. The density of the minimum thickness A portion of the shoulder portion, the minimum thickness B portion of the upper body portion, the maximum thickness C portion of the pinch portion, and the minimum thickness D portion of the bottom portion is 1. The pressure resistant self-supporting bottle according to claim 1, which has a weight of 36 g / cm 3 or more.
JP1899395A 1995-02-07 1995-02-07 Pressure-proof self-standing bottle Pending JPH08207920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1899395A JPH08207920A (en) 1995-02-07 1995-02-07 Pressure-proof self-standing bottle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1899395A JPH08207920A (en) 1995-02-07 1995-02-07 Pressure-proof self-standing bottle

Publications (1)

Publication Number Publication Date
JPH08207920A true JPH08207920A (en) 1996-08-13

Family

ID=11987101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1899395A Pending JPH08207920A (en) 1995-02-07 1995-02-07 Pressure-proof self-standing bottle

Country Status (1)

Country Link
JP (1) JPH08207920A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998036891A1 (en) * 1997-02-21 1998-08-27 Continental Pet Technologies, Inc. Enhanced shelf-life pressurized container with ribbed appearance
JP2001277346A (en) * 2000-03-29 2001-10-09 Sumitomo Bakelite Co Ltd Mold for deep drawing gas substitution package
JP2011020685A (en) * 2009-07-13 2011-02-03 Dainippon Printing Co Ltd Pressure-resistant bottle
CN106275703A (en) * 2016-10-16 2017-01-04 李红彪 The convenient container used

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998036891A1 (en) * 1997-02-21 1998-08-27 Continental Pet Technologies, Inc. Enhanced shelf-life pressurized container with ribbed appearance
US6112925A (en) * 1997-02-21 2000-09-05 Continental Pet Technologies, Inc. Enhanced shelf-life pressurized container with ribbed appearance
AU740640B2 (en) * 1997-02-21 2001-11-08 Graham Packaging Pet Technologies Inc. Enhanced shelf-life pressurized container with ribbed appearance
JP2001277346A (en) * 2000-03-29 2001-10-09 Sumitomo Bakelite Co Ltd Mold for deep drawing gas substitution package
JP4576661B2 (en) * 2000-03-29 2010-11-10 住友ベークライト株式会社 Mold for gas replacement packaging for deep drawing
JP2011020685A (en) * 2009-07-13 2011-02-03 Dainippon Printing Co Ltd Pressure-resistant bottle
CN106275703A (en) * 2016-10-16 2017-01-04 李红彪 The convenient container used

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