JP2011121597A - Plastic bottle - Google Patents

Plastic bottle Download PDF

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Publication number
JP2011121597A
JP2011121597A JP2009278480A JP2009278480A JP2011121597A JP 2011121597 A JP2011121597 A JP 2011121597A JP 2009278480 A JP2009278480 A JP 2009278480A JP 2009278480 A JP2009278480 A JP 2009278480A JP 2011121597 A JP2011121597 A JP 2011121597A
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Japan
Prior art keywords
groove
intermittent
continuous
plastic bottle
bottle
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JP2009278480A
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JP5662017B2 (en
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Takeyuki Matsuoka
建之 松岡
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Coca Cola Co
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Coca Cola Co
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Priority to JP2009278480A priority Critical patent/JP5662017B2/en
Priority to AU2010329200A priority patent/AU2010329200B2/en
Priority to PCT/JP2010/071054 priority patent/WO2011070916A1/en
Priority to CN2010800552308A priority patent/CN102712379A/en
Publication of JP2011121597A publication Critical patent/JP2011121597A/en
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    • 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
    • B65D1/40—Details of walls
    • B65D1/42—Reinforcing or strengthening parts or members
    • 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
    • B65D1/40—Details of walls
    • B65D1/42—Reinforcing or strengthening parts or members
    • B65D1/44—Corrugations
    • 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
    • B65D2501/00—Containers having bodies formed in one piece
    • B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
    • B65D2501/0018—Ribs
    • B65D2501/0036—Hollow circonferential ribs

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plastic bottle that can make compatible both a planar structure for a contact area, an adhesion area, and so on and the strength for preventing the bottle from being crushed even in the case of a lightweight bottle. <P>SOLUTION: The plastic bottle 1 having a cylindrical barrel 4 includes: a plurality of continuous grooves 61 formed at a barrel so that each recess is circumferentially continuous; and at least one discontinuous groove 63 formed at the barrel so that the recess is circumferentially discontinuous. The discontinuous groove is located between the adjacent continuous grooves in the direction of the height of the barrel. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、筒状の胴部を備えたプラスチックボトルに関する。   The present invention relates to a plastic bottle having a cylindrical body.

飲料用のＰＥＴボトルなどのプラスチックボトルでは、近年、環境への配慮の観点から、ボトル素材資源（樹脂）の使用量をできるだけ少なくし、それによりボトルを軽量化することが進められている（例えば、特許文献１及び２参照。）。しかし、軽量化によって薄肉化したボトルは、機械的強度が低下し、つぶれ易くなる。そのため、ボトルには商品価値としての強度を持たせる工夫が施されており、その一つとして、ボトル胴部に周状凹溝を形成することがある。例えば特許文献３では、ボトル胴部に周状凹溝を複数、高さ方向において形成することで、強度を高さ方向でバランス良く確保しようとしている。   In recent years, plastic bottles such as PET bottles for beverages have been promoted to reduce the amount of bottle material resource (resin) used as much as possible from the viewpoint of environmental consideration, thereby reducing the weight of the bottle (for example, Patent Documents 1 and 2). However, a bottle thinned by weight reduction has a reduced mechanical strength and is easily crushed. For this reason, the bottle is devised to give strength as a commercial value, and as one of these, a circumferential groove is formed in the bottle body. For example, in patent document 3, it is going to ensure intensity | strength with a sufficient balance in a height direction by forming several circumferential groove | channels in a bottle trunk | drum in a height direction.

特開２００５−２４７３９３号公報JP 2005-247393 A 特開２００６−１３７４６３号公報JP 2006-137463 A 特開平９−２４０６４７号公報Japanese Patent Laid-Open No. 9-240647

しかしながら、周状凹溝の数は多ければいいというものではない。多過ぎると、それだけ外部と接触するボトル胴部の接触面積が減る。このため、例えば運搬時や陳列時に並列したボトル同士で互いの接触圧力が大きくなり、それによりボトルが変形するおそれがある。また、周状凹溝が多過ぎると、ボトル胴部の外面の一部に、商品情報を印刷したラベルを貼って巻きつける場合に、ラベルを貼着する面積を広く確保し難いという問題もある。一方で、このような問題に鑑みて、単純に周状凹溝の数を減らしたのでは、ボトルの強度を損ない、本末転倒になりかねない。   However, the number of circumferential grooves is not necessarily large. If the amount is too large, the contact area of the bottle body that contacts the outside is reduced accordingly. For this reason, for example, the mutual contact pressure between the bottles arranged in parallel at the time of transportation or display may increase, which may cause deformation of the bottle. In addition, when there are too many circumferential grooves, there is a problem that it is difficult to secure a wide area for attaching the label when a label printed with product information is wrapped around a part of the outer surface of the bottle body. . On the other hand, in view of such a problem, simply reducing the number of circumferential concave grooves may impair the strength of the bottle and cause the end to fall.

本発明は、軽量化した場合にも、つぶれないような強度の確保と、接触面積や貼着面積などのための面構成の確保とを両立することが可能なプラスチックボトルを提供することをその目的としている。   It is an object of the present invention to provide a plastic bottle capable of ensuring both strength to prevent crushing and securing a surface configuration for a contact area, a sticking area, and the like even when the weight is reduced. It is aimed.

上記目的を達成するべく、本発明のプラスチックボトルは、筒状の胴部を備えたものにおいて、胴部に周方向に凹みが連続するようにして形成された複数の連続溝と、胴部に周方向に凹みが断続するようにして形成された少なくとも一つの断続溝と、を備え、断続溝は、胴部の高さ方向において互いに隣り合う連続溝と連続溝との間に位置するものである。   In order to achieve the above object, the plastic bottle of the present invention is provided with a cylindrical body part, and the body part is provided with a plurality of continuous grooves formed so that dents are continuous in the circumferential direction. At least one intermittent groove formed such that the recess is intermittent in the circumferential direction, and the intermittent groove is located between the continuous groove and the continuous groove adjacent to each other in the height direction of the body portion. is there.

本発明によれば、断続溝の凹みがある部分ではリブとしての補強効果が図られ、断続溝の凹みが途切れている部分では面としての領域が確保される。これにより、全ての凹溝を連続溝とする場合に比べて、ボトルを並列させたときの接触面積やラベルの貼着面積等のための面構成を広く確保することができる。しかも、胴部全体としてみれば、連続溝及び断続溝の凹みによる本来の補強効果も犠牲にせずに済む。また、連続溝、断続溝及び連続溝の順で位置するので、強度及び面構成を効率的に確保することが可能となる。このように、本発明によれば、例えば既存のボトルの周状凹溝の数を減らさなくとも、全体として、軽くてもつぶれないような強度を確保しながら、面構成をできるだけ広く確保することが可能となる。   According to the present invention, a reinforcing effect as a rib is achieved at a portion where the recess of the intermittent groove is present, and an area as a surface is ensured at a portion where the recess of the intermittent groove is interrupted. Thereby, compared with the case where all the ditch | grooves are made into a continuous groove | channel, the surface structure for the contact area when a bottle is put in parallel, the sticking area of a label, etc. can be ensured widely. In addition, when viewed as the entire body portion, the original reinforcing effect due to the recesses of the continuous groove and the intermittent groove is not sacrificed. Moreover, since it is located in the order of the continuous groove, the intermittent groove and the continuous groove, the strength and the surface configuration can be efficiently ensured. Thus, according to the present invention, for example, without reducing the number of circumferential concave grooves of an existing bottle, the surface configuration can be ensured as wide as possible while ensuring the strength not to be crushed even if light. Is possible.

好ましくは、連続溝は、断続溝よりも、深さ及び高さの少なくとも一つが大きいとよい。
これにより、連続溝ではリブとしての補強効果が大きくなるので、連続溝に本来期待される強度を奏させることができる。また、一般に凹溝の深さ又は高さが小さいほど、凹みではない部分（すなわち、面）を広く確保し易いので、断続溝のまわりでは面構成を広く確保することができる。 Preferably, the continuous groove is larger in at least one of depth and height than the intermittent groove.
Thereby, since the reinforcing effect as a rib becomes large in a continuous groove, the intensity | strength originally anticipated to a continuous groove can be show | played. In general, the smaller the depth or height of the concave groove, the easier it is to secure a wider portion (that is, a surface) that is not a concave, so that a wider surface configuration can be secured around the intermittent groove.

好ましくは、胴部の横断面は方形からなり、横断面は計４つのコーナー部がそれぞれ円弧からなり、断続溝は、各コーナー部の円弧の中心部では、凹みが存在しないように形成されるとよい。
例えば、ボトルにラベルを貼る場合に、コーナー部の円弧の中心部から貼ることができるため、貼着面積を広く確保することができる。一方で、横断面のうち、コーナー部は他の部分よりも本来的に強度が大きいので、その中心部に断続溝の凹みがなかったとしても、ボトル全体としてみれば、それほど強度を犠牲にしなくて済む。 Preferably, the cross-section of the body portion is a square, the cross-section is formed with a total of four corner portions each being an arc, and the intermittent groove is formed so that there is no depression at the center of the arc of each corner portion. Good.
For example, when sticking a label on a bottle, since it can stick from the center part of the circular arc of a corner part, a sticking area can be ensured widely. On the other hand, in the cross section, the corner part is inherently stronger than the other parts, so even if there is no indentation groove in the center part, the strength is not sacrificed so much as the whole bottle. I'll do it.

より好ましくは、断続溝は、各コーナー部の円弧の中心部を除く円弧部分には、凹みが存在するように形成されるとよい。
こうすることで、直線状の２次元的な凹み形状でなく、弓状の凹み形状が実現でき、三次元的に強度を向上することができる。 More preferably, the intermittent groove may be formed so that there is a recess in the arc portion excluding the center portion of the arc of each corner portion.
By doing so, an arcuate depression shape can be realized instead of a linear two-dimensional depression shape, and the strength can be improved three-dimensionally.

好ましくは、連続溝の縦断面は正三角形からなり、その正三角形の頂点のうち最もボトル内方に位置する頂点が円弧からなるとよい。
これにより、ボトルに上下方向の力が作用した場合にも、その力が分散されるようなスプリング効果が連続溝にて奏されるようになる。よって、縦方向の強度を向上することができる。 Preferably, the longitudinal section of the continuous groove is an equilateral triangle, and the apex located most inside the bottle among the apexes of the equilateral triangle may be an arc.
As a result, even when a vertical force is applied to the bottle, a spring effect is produced in the continuous groove so that the force is dispersed. Therefore, the strength in the vertical direction can be improved.

好ましくは、断続溝の縦断面は、半円弧形からなり、且つ、連続溝の縦断面とは異なるとよい。
このような断続溝であれば、面を確保するためにできるだけ細い断続溝を形成する場合の成形のし易さや、そのための金型の作製のし易さの観点で有用となる。 Preferably, the longitudinal section of the intermittent groove has a semicircular arc shape and may be different from the longitudinal section of the continuous groove.
Such an intermittent groove is useful from the viewpoint of ease of molding when forming an intermittent groove that is as thin as possible in order to secure a surface, and ease of manufacturing a mold for that purpose.

好ましくは、胴部の領域のうち、断続溝における凹みが途切れている領域に、ラベルが貼着されるとよい。
これにより、貼着面積が広く確保された領域にラベルを貼ることができ、高いラベル接着強度を保つことができる。 Preferably, the label may be attached to a region of the body portion where the recess in the intermittent groove is interrupted.
Thereby, a label can be stuck on the area | region where the sticking area was ensured widely, and high label adhesive strength can be maintained.

好ましくは、断続溝は高さ方向において複数があり、連続溝と断続溝とは高さ方向において交互に並ぶように配置されるとよい。
これにより、強度及び面を高さ方向で局所的に小さくさせずに済む。 Preferably, there are a plurality of intermittent grooves in the height direction, and the continuous grooves and the intermittent grooves may be arranged alternately in the height direction.
This eliminates the need to locally reduce the strength and surface in the height direction.

図１（ａ）及び（ｂ）は、実施形態に係るプラスチックボトルをそれぞれ別の角度からみた斜視図である。Fig.1 (a) and (b) are the perspective views which looked at the plastic bottle which concerns on embodiment from another angle, respectively. 図１のプラスチックボトルの正面図である。It is a front view of the plastic bottle of FIG. 図２のＩＩＩ−ＩＩＩ線で切断した横断面図である。It is the cross-sectional view cut | disconnected by the III-III line of FIG. 図２のＩＶ−ＩＶ線で切断した縦断面図であり、ハッチングを省略して切断箇所の輪郭を示すものである。It is the longitudinal cross-sectional view cut | disconnected by the IV-IV line | wire of FIG. 2, and hatching is abbreviate | omitted and the outline of a cut location is shown. 図５（ａ）及び（ｂ）は、それぞれ、実施形態に係るプラスチックボトルにラベルを巻いた状態を示す正面図及び側面図である。FIGS. 5A and 5B are a front view and a side view, respectively, showing a state where a label is wound around a plastic bottle according to the embodiment.

添付図面を参照して、本発明の好適な実施形態に係るプラスチックボトルを説明する。
以下の説明では、ボトル口部が存在する方を上側とし、ボトル底部が存在する方を下側とする。高さとは、ボトルの中心軸の方向（上下方向）に沿った長さを意味する。横断面とは、中心軸に直交する平面における断面形状を意味する。縦断面とは、中心軸を含む平面における断面形状を意味する。 A plastic bottle according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
In the following description, the direction where the bottle mouth portion exists is the upper side, and the direction where the bottle bottom portion exists is the lower side. The height means a length along the direction (vertical direction) of the central axis of the bottle. A transverse section means a sectional shape in a plane perpendicular to the central axis. A longitudinal section means a sectional shape in a plane including the central axis.

図１及び図２に示すように、プラスチックボトル１（以下、「ボトル１」という。）は、上側から順に、口部２、肩部３、胴部４及び底部５を有する。これらの部分（２，３，４及び５）は、一体に形成され、内部に飲料を貯留するための有底筒状のボトル壁を構成する。飲料としては、水、緑茶、ウーロン茶、ブレンド茶、スポーツドリンク又は果汁等の非炭酸飲料を挙げることができる。他の実施態様では、ゼリー飲料又はソース等の食品を貯留することもできる。   As shown in FIGS. 1 and 2, the plastic bottle 1 (hereinafter referred to as “bottle 1”) includes a mouth portion 2, a shoulder portion 3, a trunk portion 4, and a bottom portion 5 in order from the upper side. These parts (2, 3, 4 and 5) are integrally formed, and constitute a bottomed cylindrical bottle wall for storing a drink inside. Examples of the beverage include non-carbonated beverages such as water, green tea, oolong tea, blended tea, sports drink or fruit juice. In other embodiments, food items such as jelly beverages or sauces may be stored.

ボトル１は、例えば、ポリエチレン、ポリプロピレン、ポリエチレンテレフタレートなどの熱可塑性樹脂を主材料として、二軸延伸ブロー成形等の延伸成形法により成形される。
ボトル１の製造工程の一例を説明する。先ず、金型内に熱可塑性樹脂を射出し、プリフォームを射出成形する。プリフォームは、口部２と同形状の口部と、その下側に連なる有底の筒状部と、で構成される。射出成形後は、プリフォームをブロー成形機にセットして、プリフォームの筒状部を加熱する。そして、延伸ロッドによって筒状部を縦方向に延伸させると共に、圧縮空気を吹き込んで筒状部を横方向に延伸させる。延伸させた筒状部の部位を金型の内面に押し付け、その後固化させる。これにより、肩部３、胴部４及び底部５が成形され、ボトル１の一連の成形が完了する。ボトル１のサイズの一例を示すと、高さは約２１０ｍｍ、満注容量は約１０００ｍｌであり、プリフォームの重量は２０．５ｇである。 The bottle 1 is molded by a stretch molding method such as biaxial stretch blow molding using, for example, a thermoplastic resin such as polyethylene, polypropylene, or polyethylene terephthalate as a main material.
An example of the manufacturing process of the bottle 1 will be described. First, a thermoplastic resin is injected into a mold, and a preform is injection molded. The preform is composed of a mouth portion having the same shape as the mouth portion 2 and a bottomed cylindrical portion continuous to the lower side thereof. After injection molding, the preform is set on a blow molding machine and the tubular portion of the preform is heated. And while extending a cylindrical part to a vertical direction with an extending | stretching rod, compressed air is blown and a cylindrical part is extended to a horizontal direction. The stretched cylindrical portion is pressed against the inner surface of the mold and then solidified. Thereby, the shoulder part 3, the trunk | drum 4, and the bottom part 5 are shape | molded, and a series of shaping | molding of the bottle 1 is completed. As an example of the size of the bottle 1, the height is about 210 mm, the full injection capacity is about 1000 ml, and the weight of the preform is 20.5 g.

口部２は、上端が開口しており、飲料の注ぎ口として機能する。口部２の開口は、図示省略したキャップにより開閉される。肩部３は、横断面が下方にかけて徐々に拡大してなり、ボトル１において最小径の口部２を、ボトル１において最大幅を構成する胴部５の上端に連続させる。底部５は、底壁２１及び周壁２２で構成される。周壁２２は、下方にかけて僅かにすぼめられてなり、胴部４の下端を底壁２１に連続させる。口部２、肩部３及び底部５の形状は、特に限定されるものではなく、適宜設計することができる。   The mouth part 2 is open at the upper end and functions as a beverage spout. The opening of the mouth 2 is opened and closed by a cap (not shown). The shoulder 3 gradually expands in cross section in the downward direction, and the mouth 2 having the smallest diameter in the bottle 1 is connected to the upper end of the body 5 constituting the maximum width in the bottle 1. The bottom 5 is composed of a bottom wall 21 and a peripheral wall 22. The peripheral wall 22 is slightly depressed downward, and the lower end of the body portion 4 is continued to the bottom wall 21. The shapes of the mouth part 2, the shoulder part 3, and the bottom part 5 are not particularly limited, and can be appropriately designed.

図２及び図３に示すように、胴部４は、正方形の横断面からなる筒状の部分である。詳細には、図３に示すように、胴部４の横断面は、正方形の計４つのコーナー部３１（二辺の交差する角部。）が円弧からなり、隣り合うコーナー部３１，３１の間にストレート部３３を有する。ストレート部３３は、胴部４の平坦な外表面を構成する。   As shown in FIG.2 and FIG.3, the trunk | drum 4 is a cylindrical part which consists of a square cross section. Specifically, as shown in FIG. 3, the cross section of the body portion 4 has a total of four corner portions 31 (corner portions where two sides intersect) formed of a circular arc, and the corner portions 31, 31 adjacent to each other. A straight portion 33 is provided between them. The straight portion 33 constitutes a flat outer surface of the trunk portion 4.

図２に示すように、胴部４を上下方向に３つのエリアで区分けすると、胴部４は、互いに同じ横断面の上側胴部４１及び下側胴部４２と、これらの間にある中間胴部４３と、からなるといえる。中間胴部４３は、消費者がボトル１を把持し易いように、くびれ部５０及び窪み部５２を有する。くびれ部５０は主として各コーナー部３１にあり、また、窪み部５２は主として各ストレート部３３にあり、それぞれ、ボトル１に飲料を満充填させたときの重心の近傍に形成される。別の実施態様では、くびれ部５０及び窪み部５２の態様を適宜設計変更することができ、例えば、くびれ部５０及び窪み部５２を省略することもできる。   As shown in FIG. 2, when the body part 4 is divided into three areas in the vertical direction, the body part 4 is divided into an upper body part 41 and a lower body part 42 having the same cross section as each other, and an intermediate body part therebetween. It can be said that it consists of part 43. The intermediate body portion 43 includes a constricted portion 50 and a recessed portion 52 so that the consumer can easily hold the bottle 1. The constricted part 50 is mainly in each corner part 31 and the hollow part 52 is mainly in each straight part 33, and is formed in the vicinity of the center of gravity when the bottle 1 is fully filled with a beverage. In another embodiment, the design of the aspect of the constricted part 50 and the hollow part 52 can be changed as appropriate. For example, the constricted part 50 and the hollow part 52 can be omitted.

胴部４は、複数の連続溝６１及び複数の断続溝６３を有する。連続溝６１及び断続溝６３は、いずれも胴部４の横強度を高めるのに機能するが、その効果としては、連続溝６１の方が断続溝６３よりも大きい。連続溝６１は、胴部４に周方向に亘って凹みが連続するようにして形成される一方、断続溝６３は、胴部４に周方向に亘って凹みが断続するようにして形成される。   The body 4 has a plurality of continuous grooves 61 and a plurality of intermittent grooves 63. Both the continuous groove 61 and the intermittent groove 63 function to increase the lateral strength of the body portion 4, but as an effect, the continuous groove 61 is larger than the intermittent groove 63. The continuous groove 61 is formed so that the recess is continuous in the circumferential direction in the body portion 4, while the intermittent groove 63 is formed so that the recess is interrupted in the circumferential direction of the body portion 4. .

連続溝６１は、上側胴部４１に４つ形成され、そのうちの２つが肩部３及び中間胴部４３との境界に位置する。また、連続溝６１は、下側胴部４２にも２つ形成され、それぞれが中間胴部４３及び底部５との境界に位置する。断続溝６３は、上側胴部４１に３つが、下側胴部４２に１つが形成されており、それぞれ、互いに隣り合う連続溝６１、６１の間に位置する。特に本実施形態では、連続溝６１と断続溝６３とは、ボトル１の高さ方向において胴部４に交互に配置され、上側胴部４１においては両者の間隔は均等になっている。   Four continuous grooves 61 are formed in the upper body 41, and two of them are located at the boundary between the shoulder 3 and the intermediate body 43. Two continuous grooves 61 are also formed in the lower body portion 42, and each is located at the boundary between the intermediate body portion 43 and the bottom portion 5. Three intermittent grooves 63 are formed in the upper body portion 41 and one in the lower body portion 42, and are positioned between the adjacent continuous grooves 61 and 61, respectively. In particular, in the present embodiment, the continuous grooves 61 and the intermittent grooves 63 are alternately arranged in the body portion 4 in the height direction of the bottle 1, and the distance between the two in the upper body portion 41 is equal.

連続溝６１及び断続溝６３は、それぞれの縦断面が異なる。具体的には、図４に示すように、連続溝６１の縦断面は、三角形からなり、好ましくは正三角形からなる。そして、連続溝６１の縦断面のうち、ボトル内方に位置する三角形の頂点は、円弧の形状からなる。これにより、ボトル１に高さ方向の圧縮力が作用した場合に、その力が分散されるようなスプリング効果が連続溝６１にて奏されるようになる。一方、断続溝６３の縦断面は、円弧形からなり、好ましくは半円弧形からなる。また、断続溝６３は、連続溝６１よりも、深さ及び高さの少なくとも一つが小さく形成され、ここでは両方とも小さく形成されることが好ましい。一例を挙げると、断続溝６３の深さは連続溝６１の深さの約１/２であり、断続溝６３の高さは連続溝６１の高さの約１/３である。   The continuous groove 61 and the intermittent groove 63 have different vertical cross sections. Specifically, as shown in FIG. 4, the longitudinal section of the continuous groove 61 is a triangle, preferably a regular triangle. And the vertex of the triangle located in the bottle inside among the longitudinal cross-section of the continuous groove | channel 61 consists of a circular arc shape. As a result, when a compressive force in the height direction acts on the bottle 1, a spring effect is produced in the continuous groove 61 so that the force is dispersed. On the other hand, the longitudinal section of the intermittent groove 63 has an arc shape, preferably a semicircular arc shape. Further, the intermittent groove 63 is formed so that at least one of the depth and the height is smaller than that of the continuous groove 61, and it is preferable that both of them are formed small here. For example, the depth of the intermittent groove 63 is about 1/2 of the depth of the continuous groove 61, and the height of the intermittent groove 63 is about 1/3 of the height of the continuous groove 61.

断続溝６３は、胴部４の各コーナー部３１の一部において、凹みが途切れるように周状に形成される。詳細には、図３に示すように、断続溝６３は、前後対称及び左右対称に、４つのへこんだ部分６５と、隣り合うへこんだ部分６５，６５の間にある計４つの平らな部分６７と、からなる。これらの部分６５，６７の長さは、補強効果及び面構成の確保が可能な範囲に設定するのであれば特に限定されるものではないが、補強効果が十分に発揮されるためには、へこんだ部分６５の長さは平らな部分６７の長さよりも大きいことが好ましい。面構成の確保に適した寸法の一例を挙げると、胴部４の最大幅が８５ｍｍである場合には、平らな部分６７の長さは８ｍｍ以上であることが好ましい。   The intermittent groove 63 is formed in a circumferential shape so that the recess is interrupted at a part of each corner portion 31 of the body portion 4. Specifically, as shown in FIG. 3, the interrupting groove 63 has a total of four flat portions 67 between four indented portions 65 and adjacent indented portions 65, 65 in a front-back symmetry and a left-right symmetry. And consist of The lengths of these portions 65 and 67 are not particularly limited as long as they are set within a range in which the reinforcing effect and the surface configuration can be ensured. The length of the ridge portion 65 is preferably greater than the length of the flat portion 67. As an example of dimensions suitable for securing the surface configuration, when the maximum width of the body portion 4 is 85 mm, the length of the flat portion 67 is preferably 8 mm or more.

へこんだ部分６５は、ストレート部３３に亘って形成されると共に、ストレート部３３の両側のコーナー部３１、３１の一部に形成される。一方、平らな部分６７は、コーナー部３１の一部にのみ形成される。したがって、断続溝６３を含む横断面では、円弧のコーナー部３１の中心部（中心軸から最も遠い部分を含む。）では、断続溝６３の凹みが存在せず、且つ、コーナー部３１の中心部の両側にある部分では、断続溝６３の凹みが存在するように形成されている。この点について、胴部４の外周面に着目して説明すれば、断続溝６３の凹みが存在しない面は、例えば隣り合う連続溝６１，６１間の面など、他の面と同一平面となるように平らな面となっている。   The recessed portion 65 is formed over the straight portion 33 and is formed at a part of the corner portions 31 on both sides of the straight portion 33. On the other hand, the flat portion 67 is formed only in a part of the corner portion 31. Therefore, in the cross section including the intermittent groove 63, the central portion of the corner portion 31 of the arc (including the portion farthest from the central axis) does not include the recess of the intermittent groove 63 and the central portion of the corner portion 31. In the portions on both sides, the indentation groove 63 is formed so as to have a dent. If this point is explained by paying attention to the outer peripheral surface of the body portion 4, the surface where the recess of the intermittent groove 63 does not exist is the same plane as other surfaces such as the surface between the adjacent continuous grooves 61, 61. It has a flat surface.

以上説明したボトル１は、商品名や原材料名等を印刷したラベル７０により覆われて（図５参照）、市場に提供される。ラベル７０は、胴部４の外周面に貼着されることで設けられており、その貼着力は、消費者が飲用後にラベル７０を胴部４から剥がして、分離することができる程度となっている。ここでは、ラベル７０として、ミシン目を有しない巻きラベルが用いられる。このようなラベル７０を胴部４に設けるには、先ず、ラベル７０の一端部の内面を胴部４の外周面に貼着し、この貼着された部分を起点にしてラベル７０の他の部分を胴部４の周りに巻く。そして、一巻きしたラベル７０の他端部の内面をその内側にある既に巻かれたラベル７０の外面部分に貼着する。これにより、ラベル７０の貼着が完了する。一方、貼着されたラベル７０を分離するには、貼着手順とは逆の手順をふむように、ラベル７０の他端部側から剥がしていけばよい。   The bottle 1 described above is covered with a label 70 on which a product name, a raw material name, and the like are printed (see FIG. 5) and provided to the market. The label 70 is provided by being affixed to the outer peripheral surface of the torso portion 4, and the affixing force thereof is such that the consumer can peel off the label 70 from the torso portion 4 after drinking and separate it. ing. Here, a wound label having no perforation is used as the label 70. In order to provide such a label 70 on the body 4, first, the inner surface of one end of the label 70 is attached to the outer peripheral surface of the body 4, and the other part of the label 70 is started from this attached part. Wrap the part around the torso 4. And the inner surface of the other end part of the rolled label 70 is stuck on the outer surface part of the already wound label 70 inside. Thereby, sticking of the label 70 is completed. On the other hand, in order to separate the attached label 70, the label 70 may be peeled off from the other end side so as to include a procedure reverse to the attaching procedure.

図５に示すように、ラベル７０は、上側胴部４１にある肩部３側の連続溝６１直下から中間胴部４３側の連続溝６１の直上にかけて設けられる。別の観点で換言すると、胴部４の外周面は、複数（３つ）の断続溝６３を含む領域に、ラベル７０を設けるためのラベル範囲を有するといえる。そして、このラベル範囲のうち、断続溝６３における凹みが途切れている領域（すなわち、平らな部分６７）を含む貼着領域７２（図１（ａ）参照）に上記したラベル７０の一端部が貼着されることになる。貼着領域７２は、図１（ａ）に示すような例えば縦長の方形の領域であり、ここを起点としてラベル７０が貼り付けられて巻かれることになる。   As shown in FIG. 5, the label 70 is provided from directly below the continuous groove 61 on the shoulder 3 side of the upper body 41 to directly above the continuous groove 61 on the intermediate body 43 side. In other words, it can be said that the outer peripheral surface of the body portion 4 has a label range for providing the label 70 in a region including a plurality (three) of intermittent grooves 63. And one end part of the above-mentioned label 70 sticks to sticking field 72 (refer to Drawing 1 (a)) including the field (namely, flat part 67) where the dent in intermittent slot 63 is interrupted among this label range. Will be worn. The sticking area 72 is, for example, a vertically long rectangular area as shown in FIG. 1A, and the label 70 is pasted and wound around this area.

以上説明した本実施形態のボトル１の作用効果を説明する。   The effect of the bottle 1 of this embodiment demonstrated above is demonstrated.

１．強度及び面構成の確保の両立
ボトル１は、胴部４に形成する周状凹溝の態様として、連続溝６１のみならず、断続溝６３も採用している。断続溝６３によって、その凹みがある領域では連続溝６１と同様にリブとしての補強効果が奏される一方、凹みがない領域では平らな面を構成する。したがって、胴部４全体としてみれば、断続溝６３の凹みによる本来の補強効果をそれほど犠牲にすることなく、断続溝６３の凹みが無い領域の分だけ、面構成を広く確保することができる。 1. The bottle 1 for ensuring strength and surface configuration employs not only the continuous groove 61 but also the intermittent groove 63 as an aspect of the circumferential groove formed in the body portion 4. The intermittent groove 63 provides a reinforcing effect as a rib similarly to the continuous groove 61 in a region where the recess is present, and forms a flat surface in a region where there is no recess. Therefore, when viewed as the entire body portion 4, it is possible to ensure a wide surface configuration by an amount corresponding to a region where there is no dent in the intermittent groove 63 without sacrificing the original reinforcing effect due to the dent in the intermittent groove 63.

それゆえ、ボトル１を軽量化した場合であっても、つぶれないような強度を確保することが可能となる。と同時に、貼着領域７２において面構成を広く確保することができるので、ラベル７０の接着性を向上することができる。また、ボトル１の接触面積が広く確保されるので、例えば運搬時や陳列時にボトル１を並列させたときであっても、受ける接触圧力が小さくなり、ボトル１の変形が抑制される。   Therefore, even when the bottle 1 is reduced in weight, it is possible to ensure strength that does not crush. At the same time, a wide surface configuration can be secured in the sticking region 72, so that the adhesiveness of the label 70 can be improved. Moreover, since the contact area of the bottle 1 is ensured widely, for example, even when the bottles 1 are arranged in parallel at the time of transportation or display, the contact pressure received is reduced, and deformation of the bottle 1 is suppressed.

特に、本実施形態によれば、断続溝６３は高さ方向において連続溝６１と交互に配置されるので、強度及び面構成が高さ方向で局所的に小さくならないように配慮される。また、断続溝６３の深さ及び高さを連続溝６１よりも小さくしているので、これらを同等にする場合と比べて、断続溝６３のまわりで面構成を広く確保することができる。これと同時に、連続溝６１については、リブとしての補強効果を向上することができる。加えて、断続溝６３の凹みがない領域を、本来的にストレート部３３よりも強度が大きいコーナー部３１に設定しているので、胴部４全体としてみれば、それほど強度を犠牲にすることなく断続溝６３を形成することができる。   In particular, according to the present embodiment, since the intermittent grooves 63 are alternately arranged with the continuous grooves 61 in the height direction, it is considered that the strength and the surface configuration are not locally reduced in the height direction. Moreover, since the depth and height of the intermittent groove 63 are made smaller than those of the continuous groove 61, it is possible to ensure a wide surface configuration around the intermittent groove 63 as compared with the case where they are equal. At the same time, the reinforcing effect as a rib can be improved for the continuous groove 61. In addition, since the region where there is no dent in the intermittent groove 63 is originally set to the corner portion 31 having a strength higher than that of the straight portion 33, the strength of the body portion 4 as a whole is not sacrificed so much. Intermittent grooves 63 can be formed.

２．成形性
断続溝６３は連続溝６１に比べて細くて浅いが、このような断続溝６３の態様である場合に、断続溝６３の縦断面を連続溝６１と同様に三角形とすると、断続溝６３の成形が難しくなる。上記のとおり、断続溝６３の縦断面を半円弧形とした場合には、細くて浅い断続溝６３についても成形のし易さを向上することができる。これは、延伸成形法で使用する金型の作製もし易くなるというメリットがある。 2. Although the formable interrupting groove 63 is thinner and shallower than the continuous groove 61, in the case of such an intermittent groove 63, if the longitudinal section of the intermittent groove 63 is a triangle like the continuous groove 61, the intermittent groove 63. Is difficult to mold. As described above, when the intermittent groove 63 has a semicircular longitudinal cross section, it is possible to improve the ease of forming the thin and shallow intermittent groove 63. This has the advantage that it is easy to produce a mold used in the stretch molding method.

本実施形態の変形例について説明する。
胴部４の横断面は、正方形のみならず、長方形であってもよい。また、方形に限らず、円形、多角形など他の形状であってもよい。
断続溝６３及び連続溝６１は、胴部４に周方向において直線的に延在していなくともよい。例えば、断続溝６３及び連続溝６１は、高さ方向において腹と節が交互に繰り返す波のように、胴部４に周方向に延在するものであってもよい。 A modification of this embodiment will be described.
The cross section of the body part 4 may be not only a square but also a rectangle. Further, the shape is not limited to a square, and may be other shapes such as a circle and a polygon.
The intermittent groove 63 and the continuous groove 61 do not need to extend linearly in the circumferential direction in the body portion 4. For example, the intermittent groove 63 and the continuous groove 61 may extend in the circumferential direction in the trunk portion 4 like a wave in which a belly and a node are alternately repeated in the height direction.

１：ボトル、 ４：胴部、 ３１：コーナー部、 ６１：連続溝、 ６３：断続溝、 ７０：ラベル   1: Bottle, 4: Body, 31: Corner, 61: Continuous groove, 63: Intermittent groove, 70: Label

Claims (8)

筒状の胴部を備えたプラスチックボトルにおいて、
前記胴部に周方向に凹みが連続するようにして形成された複数の連続溝と、
前記胴部に周方向に凹みが断続するようにして形成された少なくとも一つの断続溝と、を備え、
前記断続溝は、前記胴部の高さ方向において互いに隣り合う連続溝と連続溝との間に位置する、プラスチックボトル。 In a plastic bottle with a cylindrical body,
A plurality of continuous grooves formed so that dents are continuous in the circumferential direction in the body portion;
And at least one intermittent groove formed so that a dent intermittently extends in the body portion,
The said intermittent groove is a plastic bottle located between the continuous groove adjacent to each other in the height direction of the said trunk | drum, and a continuous groove. 前記連続溝は、前記断続溝よりも、深さ及び高さの少なくとも一つが大きい、請求項１に記載のプラスチックボトル。   The plastic bottle according to claim 1, wherein the continuous groove has at least one of depth and height larger than the intermittent groove. 前記胴部は、横断面が方形からなり、
前記横断面は、計４つのコーナー部がそれぞれ円弧からなり、
前記断続溝は、前記各コーナー部の円弧の中心部では、凹みが存在しないように形成されている、請求項１又は２に記載のプラスチックボトル。 The torso has a square cross section,
The cross section has a total of four corners each consisting of an arc,
3. The plastic bottle according to claim 1, wherein the intermittent groove is formed so as not to have a dent at a central portion of an arc of each corner portion. 4. 前記断続溝は、前記各コーナー部の円弧の中心部を除く円弧部分には、凹みが存在するように形成されている、請求項３に記載のプラスチックボトル。   4. The plastic bottle according to claim 3, wherein the intermittent groove is formed such that a recess is present in an arc portion excluding a center portion of an arc of each corner portion. 前記連続溝は、縦断面が正三角形からなり、且つ、その正三角形の頂点のうち最もボトル内方に位置する頂点が円弧からなる、請求項１ないし４のいずれか一項に記載のプラスチックボトル。   The plastic bottle according to any one of claims 1 to 4, wherein the continuous groove has an equilateral triangle in a longitudinal section, and an apex located at the innermost side of the equilateral triangle is an arc. . 前記断続溝は、縦断面が半円弧形からなり、且つ、当該縦断面が前記連続溝の縦断面とは異なる、請求項１ないし５のいずれか一項に記載のプラスチックボトル。   The plastic bottle according to any one of claims 1 to 5, wherein the intermittent groove has a semicircular arc in longitudinal section, and the longitudinal section is different from the longitudinal section of the continuous groove. 前記胴部の領域のうち、前記断続溝における凹みが途切れている領域に、ラベルが貼着されている、請求項１ないし６のいずれか一項に記載のプラスチックボトル。   The plastic bottle as described in any one of Claim 1 thru | or 6 by which the label is affixed to the area | region where the dent in the said intermittent groove has interrupted among the area | regions of the said trunk | drum. 前記断続溝は、前記高さ方向において複数があり、
前記連続溝と前記断続溝とは、前記高さ方向において交互に並ぶように配置される、請求項１ないし７のいずれか一項に記載のプラスチックボトル。 The intermittent groove has a plurality in the height direction,
The plastic bottle according to any one of claims 1 to 7, wherein the continuous groove and the intermittent groove are arranged so as to be alternately arranged in the height direction.
JP2009278480A 2009-12-08 2009-12-08 Plastic bottle Active JP5662017B2 (en)

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PCT/JP2010/071054 WO2011070916A1 (en) 2009-12-08 2010-11-25 Plastic bottle
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