WO2020202727A1 - Plastic bottle - Google Patents
Plastic bottle Download PDFInfo
- Publication number
- WO2020202727A1 WO2020202727A1 PCT/JP2020/002376 JP2020002376W WO2020202727A1 WO 2020202727 A1 WO2020202727 A1 WO 2020202727A1 JP 2020002376 W JP2020002376 W JP 2020002376W WO 2020202727 A1 WO2020202727 A1 WO 2020202727A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plastic bottle
- ground contact
- valley
- circumferential direction
- grounding
- Prior art date
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- 239000004033 plastic Substances 0.000 title claims abstract description 53
- 229920003023 plastic Polymers 0.000 title claims abstract description 53
- 230000008014 freezing Effects 0.000 claims description 9
- 238000007710 freezing Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 235000013361 beverage Nutrition 0.000 abstract description 20
- 239000013585 weight reducing agent Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000004278 EU approved seasoning Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- 244000299461 Theobroma cacao Species 0.000 description 1
- 235000009470 Theobroma cacao Nutrition 0.000 description 1
- 235000013334 alcoholic beverage Nutrition 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 235000016213 coffee Nutrition 0.000 description 1
- 235000013353 coffee beverage Nutrition 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000020124 milk-based beverage Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
- 235000014214 soft drink Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 235000013555 soy sauce Nutrition 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 235000013616 tea Nutrition 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/0261—Bottom construction
- B65D1/0284—Bottom construction having a discontinuous contact surface, e.g. discrete feet
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
Provided is a plastic bottle that hardly causes, while attaining weight reduction and thinning of the plastic bottle, a buckling phenomenon when a sugarless beverage is refrigerated. The plastic bottle having a cylindrical bottom part 6 is provided with: a plurality of valley parts 62 protruding toward an inside from a lateral surface 61 of the bottom part 6 to a bottom surface 60; and a plurality of grounding parts 64. The length in a circumferential direction of the grounding parts 64 is set to be greater than the maximum length in a circumferential direction of the valley parts 62. The deepest parts of the valley parts 62 are connected upward from the bottom surface 60 to the lateral surface 61 by an arc 63 protruding toward an outside.
Description
本発明は、円筒状の底部を備えるプラスチックボトルに関する。
The present invention relates to a plastic bottle having a cylindrical bottom.
飲料の入ったプラスチックボトルを冷凍保存する場合、飲料が液体から固体に変化して膨張することによって、プラスチックボトルの底部が外側に突出して変形するバックリング現象が生じる場合がある。
When a plastic bottle containing a beverage is stored frozen, the bottom of the plastic bottle may protrude outward and deform due to the beverage changing from a liquid to a solid and expanding.
このバックリング現象を防ぐため、飲料を冷凍保存するための従来のプラスチックボトルの底部には、ペタロイド形状と類似する構成が設けられている。このペタロイド形状という構成は、炭酸飲料用の耐圧性ペットボトルで採用されており、炭酸ガスによる内圧に耐えてペットボトルの変形を防止する。
In order to prevent this buckling phenomenon, the bottom of a conventional plastic bottle for storing beverages in a frozen state is provided with a structure similar to a petaloid shape. This petaloid-shaped structure is used in pressure-resistant PET bottles for carbonated beverages, and withstands the internal pressure of carbon dioxide gas to prevent deformation of the PET bottle.
冷凍による飲料の膨張率は、有糖飲料より無糖飲料の方が高い。従来のプラスチックボトルでは、有糖飲料についてはバックリング現象を抑えることができるが、無糖飲料についてはバックリング現象を抑えることが難しい。勿論、プラスチックボトルに用いる樹脂の量を多くして、プラスチックボトル全体の強度を上げることによってバックリング現象を抑えることも考えられるが、近年の資源・コストを節約する状況に合わせて、プラスチックボトルの軽量化・薄肉化が求められているという実情がある。
The expansion rate of beverages due to freezing is higher in sugar-free beverages than in sugar-containing beverages. With conventional plastic bottles, the buckling phenomenon can be suppressed for sugared beverages, but it is difficult to suppress the buckling phenomenon for sugar-free beverages. Of course, it is conceivable to suppress the buckling phenomenon by increasing the amount of resin used for the plastic bottle and increasing the strength of the entire plastic bottle, but in accordance with the recent situation of saving resources and costs, the plastic bottle There is a fact that weight reduction and wall thinning are required.
そこで、プラスチックボトルの軽量化・薄肉化を図りつつも、無糖飲料を冷凍保存する際のバックリング現象が生じ難いプラスチックボトルの実現が望まれる。
Therefore, it is desired to realize a plastic bottle that is less likely to cause a buckling phenomenon when frozen and stored sugar-free beverages, while reducing the weight and thickness of the plastic bottle.
本発明に係るプラスチックボトルは、円筒状の底部を備えるプラスチックボトルであって、前記底部の側面から底面にわたって内側に突入する複数の谷部と、複数の接地部とを備え、前記接地部の周方向の最大長さが、前記谷部の周方向の最大長さより大きく設定されており、前記谷部の最深部が、前記底面から上側に向かって前記側面まで、外側に凸の円弧で繋がっていることを特徴とする。
The plastic bottle according to the present invention is a plastic bottle provided with a cylindrical bottom portion, and includes a plurality of valley portions penetrating inward from the side surface of the bottom portion to the bottom surface, and a plurality of ground contact portions, and the circumference of the ground contact portion. The maximum length in the direction is set to be larger than the maximum length in the circumferential direction of the valley portion, and the deepest portion of the valley portion is connected from the bottom surface to the upper side by an outwardly convex arc. It is characterized by being.
本構成のごとく、底部に設けてある複数の谷部の最深部を円弧とすることによって、冷凍時の飲料の膨張圧力が均等に分散され易くなり、膨張時の内圧を、複数の谷部の最深部を含むあたかも部分球面で支えるような状態となるため、たとえ膨張率の高い無糖飲料を冷凍する場合でも、バックリング現象が生じ難くなる。さらに、机などの設置面に対して接地させる接地部の周方向の最大長さが、谷部の周方向の最大長さより大きく設定されていることから、コンベア等によって搬送される時の転倒も生じ難い。
By forming the deepest part of the plurality of valleys provided at the bottom as an arc as in this configuration, the expansion pressure of the beverage during freezing can be easily dispersed evenly, and the internal pressure during expansion can be set to the plurality of valleys. Since it is in a state of being supported by a partial spherical surface including the deepest part, the buckling phenomenon is less likely to occur even when a sugar-free beverage having a high expansion coefficient is frozen. Furthermore, since the maximum length in the circumferential direction of the grounding portion to be grounded to the installation surface of a desk or the like is set to be larger than the maximum length in the circumferential direction of the valley portion, it may fall when transported by a conveyor or the like. Hard to occur.
本発明においては、３つの前記接地部が、周方向に略等間隔で設けられていると好適である。
In the present invention, it is preferable that the three grounding portions are provided at substantially equal intervals in the circumferential direction.
本構成のごとく、接地部を３つにすることにより、接地部が５つの従来のペタロイド形状の場合よりも接地領域をより広く確保することができ、コンベア等によって搬送される時の転倒もより一層生じ難くなると共に、底部の良好な成形性も確保し易い。
By using three grounding parts as in this configuration, it is possible to secure a wider grounding area than in the case of the conventional petaloid shape with five grounding parts, and it is possible to prevent the grounding part from tipping over when being conveyed by a conveyor or the like. It is less likely to occur, and it is easy to secure good moldability at the bottom.
本発明においては、前記側面から前記接地部を経て前記底面にわたる複数の溝部が、前記接地部において周方向に略等間隔で設けられていると好適である。
In the present invention, it is preferable that a plurality of grooves extending from the side surface to the bottom surface through the ground contact portion are provided at substantially equal intervals in the circumferential direction in the ground contact portion.
本構成によれば、プラスチックボトルの成形時や殺菌時において、当該プラスチックボトルが軽量化・薄肉化を目的とした場合であっても、ヒケの発生を起こり難くすることができる。
According to this configuration, it is possible to prevent sink marks from occurring even when the plastic bottle is intended to be lighter or thinner during molding or sterilization of the plastic bottle.
本発明においては、前記複数の溝部の少なくとも一つが、前記底面の中心部分の付近まで延びていると好適である。
In the present invention, it is preferable that at least one of the plurality of grooves extends to the vicinity of the central portion of the bottom surface.
本構成によれば、複数の溝部の少なくとも一つが、底面の中心部分の付近まで延びていることによって、バックリング現象をより生じ難くすることができる。
According to this configuration, at least one of the plurality of grooves extends to the vicinity of the central portion of the bottom surface, so that the buckling phenomenon can be made less likely to occur.
本発明においては、前記底面が、内側に突入する部分球面状であると好適である。
In the present invention, it is preferable that the bottom surface has a partially spherical shape that penetrates inward.
本構成によれば、従来のプラスチックボトルの底面の中心部分に設けられていた、ボトル内側に突入するドーム部とよばれる形状が存在しない。そのため、応力の集中し易い部分がなく、従って応力集中が軽減されて、例えプラスチックボトルを落下させてしまった場合でも、その衝撃に耐えることができ、底割れが防止される。
According to this configuration, there is no shape called a dome part that rushes into the inside of the bottle, which is provided in the center of the bottom surface of the conventional plastic bottle. Therefore, there is no portion where stress is easily concentrated, so that stress concentration is reduced, and even if the plastic bottle is dropped, it can withstand the impact and the bottom crack is prevented.
本発明においては、前記プラスチックボトルが、冷凍用であると好適である。
In the present invention, it is preferable that the plastic bottle is for freezing.
本構成によれば、冷凍用のプラスチックボトルに適用することができるため、冷凍しても変形を抑えることができ、ユーザーによる持ち運びにも便利である。
According to this configuration, since it can be applied to plastic bottles for freezing, deformation can be suppressed even when frozen, and it is convenient for users to carry.
以下、図面に基づいて、本発明の実施の形態を説明する。
図１に示すように、本実施形態に係るプラスチックボトル１は、液体の注ぎ口としての口部２と、液体を充填するボトル本体部３と、を備える。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, theplastic bottle 1 according to the present embodiment includes a mouth portion 2 as a liquid spout and a bottle body portion 3 filled with a liquid.
図１に示すように、本実施形態に係るプラスチックボトル１は、液体の注ぎ口としての口部２と、液体を充填するボトル本体部３と、を備える。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the
ボトル本体部３は、口部２と連続し、胴部５の方向に向かうにつれて徐々に拡径する肩部４と、肩部４と連続する円筒状の胴部５と、プラスチックボトル１の底となる円筒状の底部６と、から構成されている。
The bottle body 3 has a shoulder 4 that is continuous with the mouth 2 and gradually increases in diameter toward the body 5, a cylindrical body 5 that is continuous with the shoulder 4, and a bottom of the plastic bottle 1. It is composed of a cylindrical bottom portion 6 and the like.
胴部５の上側部分５０は、ロールラベルを貼り付けるラベル貼り付け域を担う部分であり、複数の補強用の周溝５２が設けられている。胴部５の下側部分５１には、補強のためと、ユーザーによるボトルの持ち易さ、そして意匠性をも考慮した、曲線的な複数の周溝を有する凹凸面５３が形成されている。
The upper portion 50 of the body portion 5 is a portion that bears a label sticking area for sticking a roll label, and is provided with a plurality of peripheral grooves 52 for reinforcement. The lower portion 51 of the body portion 5 is formed with an uneven surface 53 having a plurality of curved peripheral grooves for reinforcement, ease of holding the bottle by the user, and designability.
尚、本実施形態における底部６とは、プラスチックボトル１のうちの口部２と肩部４と胴部５とを除いた部分を意味するものである。本実施形態では、谷部６２の開始位置よりも少し上の部分から接地部６４までが底部６であり、底部６の縦の長さ（接地部６４から、側面６１と胴部５との境界までの高さ）を、例えば、２０ｍｍ～２２ｍｍとすることができる。
Note that the bottom portion 6 in the present embodiment means a portion of the plastic bottle 1 excluding the mouth portion 2, the shoulder portion 4, and the body portion 5. In the present embodiment, the bottom portion 6 is from a portion slightly above the start position of the valley portion 62 to the ground contact portion 64, and the vertical length of the bottom portion 6 (from the ground contact portion 64, the boundary between the side surface 61 and the body portion 5). The height up to) can be, for example, 20 mm to 22 mm.
図２、図４、図５に示すように、底部６は、底部６の側面６１から底面６０の中心付近にわたって内側に突入する複数の谷部６２と、机などの設置面に対して接地する複数の接地部６４とを備える。本実施形態の底部６には、３つの接地部６４が周方向に略等間隔で設けられており、周方向にて隣接する２つの接地部６４の間に谷部６２が設けられている。
As shown in FIGS. 2, 4, and 5, the bottom portion 6 is grounded against a plurality of valley portions 62 that rush inward from the side surface 61 of the bottom portion 6 to the vicinity of the center of the bottom surface 60 and an installation surface such as a desk. A plurality of grounding portions 64 are provided. The bottom portion 6 of the present embodiment is provided with three ground contact portions 64 at substantially equal intervals in the circumferential direction, and valley portions 62 are provided between two ground contact portions 64 adjacent to each other in the circumferential direction.
図２に示すように、底部６において、複数の接地部６４は、底面６０の最外周部分の同一円周上に位置している。接地部６４の周方向の最大長さＬ１は、谷部６２の周方向の最大長さＬ２に応じて変わるが、本実施形態では、図２に示すように、接地部６４の周方向の最大長さＬ１が、谷部６２の周方向の最大長さＬ２より大きく設定されている（Ｌ１＞Ｌ２）。
As shown in FIG. 2, in the bottom portion 6, the plurality of ground contact portions 64 are located on the same circumference of the outermost peripheral portion of the bottom surface 60. The maximum circumferential length L1 of the ground contact portion 64 changes according to the maximum circumferential length L2 of the valley portion 62, but in the present embodiment, as shown in FIG. 2, the maximum circumferential length L1 of the ground contact portion 64 The length L1 is set to be larger than the maximum length L2 in the circumferential direction of the valley portion 62 (L1> L2).
尚、接地部６４の形状については、図２及び図６に示される形状に限るものではなく、その径方向の幅の大きさについては、必要に応じて任意に設定して良い。
Note that the shape of the ground contact portion 64 is not limited to the shapes shown in FIGS. 2 and 6, and the size of the width in the radial direction may be arbitrarily set as needed.
図３に示すように、谷部６２の最深部が、底面６０の中心部分から上側に向かって側面６１まで、外側に凸の円弧６３で繋がっている。尚、底面６０の中心部分から上側の「上側」とは、プラスチックボトル１の底面６０からみて口部２、肩部４、胴部５のある側を意味する。
As shown in FIG. 3, the deepest portion of the valley portion 62 is connected by an arc 63 that is convex outward from the central portion of the bottom surface 60 to the side surface 61 toward the upper side. The "upper side" above the central portion of the bottom surface 60 means a side having a mouth portion 2, a shoulder portion 4, and a body portion 5 as viewed from the bottom surface 60 of the plastic bottle 1.
本実施形態における谷部６２の最深部は、底面６０の中心部分にまで延びているが、この構成に限定されるものではない。谷部６２の最深部が底面６０の中心部分に近づくほど、応力の分散に適した球状に近づくため、バックリング現象の抑制効果が高くなるが、谷部６２の最深部は底面６０に到達していればよく、必ずしも底面６０の中心部分にまで延びている必要はない。
The deepest portion of the valley portion 62 in the present embodiment extends to the central portion of the bottom surface 60, but is not limited to this configuration. The closer the deepest portion of the valley portion 62 is to the central portion of the bottom surface 60, the closer to a spherical shape suitable for stress distribution, so that the effect of suppressing the buckling phenomenon is enhanced, but the deepest portion of the valley portion 62 reaches the bottom surface 60. It does not have to extend to the central portion of the bottom surface 60.
図３及び図６に示すように、本実施形態における底面６０は、内側に突入する部分球面状となっている。谷部６２の最深部は、底面６０の頂部から底部６の側面６１まで、滑らかな円弧６３で繋がっている。
As shown in FIGS. 3 and 6, the bottom surface 60 in this embodiment has a partially spherical shape that penetrates inward. The deepest portion of the valley portion 62 is connected by a smooth arc 63 from the top of the bottom surface 60 to the side surface 61 of the bottom portion 6.
本実施形態における底面６０には、従来のプラスチックボトルの底面の中心部分に設けられていた、ボトル内側に突入するドーム部とよばれる形状が存在しないため、応力が集中し易い部分がなく応力集中が軽減されて、例えプラスチックボトル１を落下させてしまった場合でも、その衝撃に耐えることができ、底割れが防止される。
Since the bottom surface 60 in the present embodiment does not have a shape called a dome portion that plunges into the inside of the bottle, which is provided in the center portion of the bottom surface of the conventional plastic bottle, there is no portion where stress is easily concentrated and stress concentration. Is reduced, and even if the plastic bottle 1 is dropped, it can withstand the impact and the bottom crack is prevented.
底部６に設けてある複数の谷部６２の最深部を円弧６３とすることによって、冷凍時の飲料の膨張圧力が均等に分散され易くなり、膨張時の内圧を、複数の谷部６２の最深部を含むあたかも部分球面（図５参照）で支えるような状態となるため、たとえ膨張率の高い無糖飲料を冷凍する場合でも、バックリング現象が生じ難くなる。さらに、机などの設置面に対して接地させる接地部６４の周方向の最大長さＬ１が、谷部６２の周方向の最大長さＬ２より大きく設定されていることから、コンベア等によって搬送される時の転倒も生じ難い。
By forming the deepest part of the plurality of valleys 62 provided on the bottom 6 as the arc 63, the expansion pressure of the beverage during freezing can be easily dispersed evenly, and the internal pressure during expansion can be set to the deepest of the plurality of valleys 62. Since it is in a state of being supported by a partial spherical surface (see FIG. 5) including the portion, the buckling phenomenon is less likely to occur even when a sugar-free beverage having a high expansion coefficient is frozen. Further, since the maximum length L1 in the circumferential direction of the grounding portion 64 to be grounded to the installation surface such as a desk is set to be larger than the maximum length L2 in the circumferential direction of the valley portion 62, the grounding portion 64 is conveyed by a conveyor or the like. It is unlikely that you will fall over when you do so.
図３に示すように、谷部６２の高さＨ１は、例えば１２ｍｍ～２５ｍｍの範囲で設定することができる。谷部６２の高さＨ１は、高すぎると、成形性が悪くなると共に、接地部６４の領域が小さくなるため転倒し易くなり、また逆に低すぎると、バックリング現象が生じ易くなってしまうため、これらのことを考慮した上で設定される。成形性、転倒し難さ、バックリング現象の抑制効果のいずれにおいてもより良好な効果を奏する谷部６２の高さＨ１は１５ｍｍ～２２ｍｍであり、特に好ましくは１５ｍｍ～１８ｍｍである。
As shown in FIG. 3, the height H1 of the valley portion 62 can be set in the range of, for example, 12 mm to 25 mm. If the height H1 of the valley portion 62 is too high, the moldability is deteriorated and the region of the ground contact portion 64 becomes small, so that it is easy to tip over. On the contrary, if it is too low, the buckling phenomenon is likely to occur. Therefore, it is set in consideration of these things. The height H1 of the valley portion 62, which exerts a better effect in all of the moldability, the difficulty of tipping over, and the effect of suppressing the buckling phenomenon, is 15 mm to 22 mm, and particularly preferably 15 mm to 18 mm.
尚、谷部６２の最深部の円弧６３の曲率半径は、内圧に対して効果があり、かつボトル成形性が確保できる大きさであることが望ましい。具体的には、曲率半径は、約４０ｍｍ（Ｒ４０）～約６０ｍｍ（Ｒ６０）の範囲であることが望ましい。
It is desirable that the radius of curvature of the arc 63 at the deepest part of the valley portion 62 is large enough to have an effect on the internal pressure and ensure bottle moldability. Specifically, the radius of curvature is preferably in the range of about 40 mm (R40) to about 60 mm (R60).
また、接地部６４を３つにすることにより、５つの接地部６４を有する従来のペタロイド形状の場合よりも接地領域をより広く確保することができ、コンベア等によって搬送される時の転倒もより一層生じ難くなると共に、底部６の良好な成形性も確保し易い。しかしながら、接地部６４の数については、当該構成に限定される訳ではなく、成形性、転倒し難さ、バックリング現象の抑制効果等を考慮して適宜変更して良い。
Further, by making the number of the grounding portions 64 into three, it is possible to secure a wider grounding area than in the case of the conventional petaloid shape having the five grounding portions 64, and it is possible to prevent the vehicle from tipping over when being conveyed by a conveyor or the like. It is less likely to occur, and it is easy to secure good moldability of the bottom 6. However, the number of the grounding portions 64 is not limited to the configuration, and may be appropriately changed in consideration of moldability, difficulty of tipping over, suppressing effect of buckling phenomenon, and the like.
図２、図４～図６に示すように、底部６の側面６１から接地部６４を経て底面６０にわたる３つの溝部６５が、接地部６４において周方向に略等間隔で設けられている。本構成によれば、プラスチックボトル１の成形時や殺菌時において、当該プラスチックボトル１が軽量化・薄肉化を目的とした場合であっても、ヒケの発生を起こり難くすることができる。溝部６５の数については、当該構成に限定される訳ではなく、成形性や、ヒケ発生の抑制効果等を考慮して適宜変更して良いが、特に本実施形態の場合については、溝部６５が２つの場合はヒケが生じ易くなり、また溝部６５が４つの場合は良好な成形性を得難くなる。
As shown in FIGS. 2 and 4 to 6, three groove portions 65 extending from the side surface 61 of the bottom portion 6 through the ground contact portion 64 to the bottom surface 60 are provided in the ground contact portion 64 at substantially equal intervals in the circumferential direction. According to this configuration, when the plastic bottle 1 is molded or sterilized, sink marks can be less likely to occur even when the plastic bottle 1 is intended for weight reduction and thinning. The number of groove portions 65 is not limited to the configuration, and may be appropriately changed in consideration of moldability, the effect of suppressing the occurrence of sink marks, etc. However, particularly in the case of the present embodiment, the groove portions 65 may be used. In the case of two, sink marks are likely to occur, and in the case of four grooves 65, it becomes difficult to obtain good moldability.
図２、図６に示すように、本実施形態では、一つの接地部６４につき、３つの溝部６５が周方向に略等間隔で設けられており、真ん中の溝部６５のみが、底面６０の中心部分の付近まで延びている。溝部６５が、底面６０の中心部分の付近まで延びていることによって、バックリング現象をより生じ難くすることができる。複数の溝部６５の全てが、底面６０の中心部分の付近まで延びていても良いが、成形性等を考慮すると、複数の溝部６５の少なくとも一つが底面６０の中心部分の付近まで延びていることが望ましく、こうした点を踏まえながら、底面６０の中心部分の付近まで延びている溝部６５の数については、適宜変更して良い。
As shown in FIGS. 2 and 6, in the present embodiment, three groove portions 65 are provided at substantially equal intervals in the circumferential direction for one ground contact portion 64, and only the middle groove portion 65 is the center of the bottom surface 60. It extends to the vicinity of the part. Since the groove portion 65 extends to the vicinity of the central portion of the bottom surface 60, the buckling phenomenon can be made less likely to occur. All of the plurality of groove portions 65 may extend to the vicinity of the central portion of the bottom surface 60, but in consideration of moldability and the like, at least one of the plurality of groove portions 65 extends to the vicinity of the central portion of the bottom surface 60. However, in consideration of these points, the number of the groove portions 65 extending to the vicinity of the central portion of the bottom surface 60 may be appropriately changed.
本実施形態における溝部６５の周方向の長さは、谷部６２の周方向の最大長さよりも小さく設定されている。
The circumferential length of the groove portion 65 in the present embodiment is set to be smaller than the maximum circumferential length of the valley portion 62.
図３に示すように、底上がりの高さＨ２（接地部６４から、底面６０の中心部分までの高さ）は、バックリング現象を抑え、良好なボトル成形性を備え、さらに落下時の底割れを防止し易くなるという点から、２ｍｍ～１０ｍｍとすることが望ましく、特に４ｍｍ～７ｍｍとすることが好ましい。
As shown in FIG. 3, the height H2 (the height from the ground contact portion 64 to the central portion of the bottom surface 60) suppresses the buckling phenomenon, has good bottle moldability, and further has a bottom when dropped. From the viewpoint of facilitating cracking, it is preferably 2 mm to 10 mm, and particularly preferably 4 mm to 7 mm.
本実施形態のプラスチックボトル１に充填する液体は特に限定されず、例えば、飲料水、茶、果汁、コーヒー、ココア、清涼飲料水、アルコール飲料、乳飲料、スープなどの飲料や、ソースや醤油などの液体調味料などが挙げられる。また特に、飲料の場合は、有糖飲料でも無糖飲料でもよく、無糖飲料を冷凍する場合でも、本実施形態のプラスチックボトル１を好適に使用することができる。
The liquid to be filled in the plastic bottle 1 of the present embodiment is not particularly limited, and for example, beverages such as drinking water, tea, fruit juice, coffee, cocoa, soft drinks, alcoholic beverages, milk beverages, soups, sauces, soy sauce, etc. Liquid seasonings and the like. Further, in particular, in the case of a beverage, a sugar-free beverage or an sugar-free beverage may be used, and even when the sugar-free beverage is frozen, the plastic bottle 1 of the present embodiment can be preferably used.
本実施形態のプラスチックボトル１は、常温用、冷蔵用、冷凍用のいずれの用途にも使用することができるが、冷凍用が特に好適である。
The plastic bottle 1 of the present embodiment can be used for any of the purposes of normal temperature, refrigeration, and freezing, but the one for freezing is particularly preferable.
本実施形態のプラスチックボトル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等の熱可塑性樹脂を主材料として、二軸延伸ブロー成型等の延伸成形法によって一体的に成型することができる。プラスチックボトル１の容量は特に限定されず、一般的に流通している２００ミリリットル～２リットル程度とすることができ、特に好ましくは、２５０ミリリットル～１リットルである。
The plastic bottle 1 of the present embodiment can be integrally molded by a stretching molding method such as biaxial stretching blow molding using a thermoplastic resin such as polyethylene, polypropylene, or polyethylene terephthalate as a main material. The capacity of the plastic bottle 1 is not particularly limited, and can be about 200 ml to 2 liters that are generally distributed, and particularly preferably 250 ml to 1 liter.
本実施形態のプラスチックボトル１は、資源・コストを節約するために、一般的な飲料用プラスチックボトルに比べて薄肉にしても良い。具体的には、プラスチックボトル１の満注容量（ｍｌ）に対するプラスチックボトル１の樹脂量（ｇ）の比率が０．０１７～０．０４１（ｇ／ｍｌ）、より好ましくは０．０２３～０．０３７となるように形成されていると好適である。満注容量に対する樹脂量の比率が０．０４１（ｇ／ｍｌ）を上回ると、厚みの薄い軽量なボトルとはいえず、一方、満注容量に対する樹脂量の比率が０．０１７（ｇ／ｍｌ）を下回ると肉厚が薄くなりすぎ、強度を確保し難くなるためである。
The plastic bottle 1 of the present embodiment may be thinner than a general plastic bottle for beverages in order to save resources and costs. Specifically, the ratio of the amount of resin (g) of the plastic bottle 1 to the full filling capacity (ml) of the plastic bottle 1 is 0.017 to 0.041 (g / ml), more preferably 0.023 to 0. It is preferable that it is formed so as to be 037. If the ratio of the amount of resin to the full volume exceeds 0.041 (g / ml), it cannot be said that the bottle is thin and lightweight, while the ratio of the amount of resin to the full volume is 0.017 (g / ml). If it is less than), the wall thickness becomes too thin and it becomes difficult to secure the strength.
本明細書において開示された上述の実施形態は全ての点で例示であって、本発明の範囲はそれらによって限定されることはないと理解されるべきである。当業者であれば、本発明の趣旨を逸脱しない範囲で、適宜改変が可能であることを容易に理解できるであろう。
It should be understood that the above embodiments disclosed herein are exemplary in all respects and the scope of the invention is not limited thereto. Those skilled in the art will be able to easily understand that modifications can be made as appropriate without departing from the spirit of the present invention.
本発明は、冷凍用のプラスチックボトルに好適に利用することができる。
The present invention can be suitably used for a plastic bottle for freezing.
１ プラスチックボトル
２ 口部
３ ボトル本体部
４ 肩部
５ 胴部
５０ 上側部分
５１ 下側部分
５２ 周溝
５３ 凹凸面
６ 底部
６０ 底面
６１ 側面
６２ 谷部
６３ 円弧
６４ 接地部
６５ 溝部
Ｌ１ 接地部の周方向の最大長さ
Ｌ２ 谷部の周方向の最大長さ
Ｈ１ 谷部の高さ
Ｈ２ 底上がりの高さ 1Plastic bottle 2 Mouth 3 Bottle body 4 Shoulder 5 Body 50 Upper part 51 Lower part 52 Circumferential groove 53 Concavo-convex surface 6 Bottom 60 Bottom 61 Side surface 62 Valley part 63 Arc 64 Grounding part 65 Groove L1 Grounding part circumference Maximum length in the direction L2 Maximum length in the circumferential direction of the valley H1 Height of the valley H2 Height of the bottom rise
２ 口部
３ ボトル本体部
４ 肩部
５ 胴部
５０ 上側部分
５１ 下側部分
５２ 周溝
５３ 凹凸面
６ 底部
６０ 底面
６１ 側面
６２ 谷部
６３ 円弧
６４ 接地部
６５ 溝部
Ｌ１ 接地部の周方向の最大長さ
Ｌ２ 谷部の周方向の最大長さ
Ｈ１ 谷部の高さ
Ｈ２ 底上がりの高さ 1
Claims (6)
- 円筒状の底部を備えるプラスチックボトルであって、
前記底部の側面から底面にわたって内側に突入する複数の谷部と、複数の接地部とを備え、前記接地部の周方向の最大長さが、前記谷部の周方向の最大長さより大きく設定されており、
前記谷部の最深部が、前記底面から上側に向かって前記側面まで、外側に凸の円弧で繋がっていることを特徴とするプラスチックボトル。 A plastic bottle with a cylindrical bottom
A plurality of valleys penetrating inward from the side surface to the bottom surface of the bottom portion and a plurality of ground contact portions are provided, and the maximum circumferential length of the ground contact portion is set to be larger than the maximum circumferential length of the valley portion. And
A plastic bottle characterized in that the deepest portion of the valley portion is connected from the bottom surface to the upper side by a convex arc outward. - ３つの前記接地部が、周方向に略等間隔で設けられていることを特徴とする請求項１に記載のプラスチックボトル。 The plastic bottle according to claim 1, wherein the three grounding portions are provided at substantially equal intervals in the circumferential direction.
- 前記側面から前記接地部を経て前記底面にわたる複数の溝部が、前記接地部において周方向に略等間隔で設けられていることを特徴とする請求項１又は２に記載のプラスチックボトル。 The plastic bottle according to claim 1 or 2, wherein a plurality of grooves extending from the side surface to the bottom surface through the ground contact portion are provided at substantially equal intervals in the circumferential direction in the ground contact portion.
- 前記複数の溝部の少なくとも一つが、前記底面の中心部分の付近まで延びていることを特徴とする請求項３に記載のプラスチックボトル。 The plastic bottle according to claim 3, wherein at least one of the plurality of grooves extends to the vicinity of the central portion of the bottom surface.
- 前記底面が、内側に突入する部分球面状であることを特徴とする請求項１～４のいずれか１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 bottom surface has a partially spherical shape that penetrates inward.
- 冷凍用であることを特徴とする請求項１～５のいずれか１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, which is characterized by being for freezing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202080035192.3A CN113811490B (en) | 2019-03-29 | 2020-01-23 | Plastic bottle |
| EP20783822.8A EP3950519A4 (en) | 2019-03-29 | 2020-01-23 | Plastic bottle |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-067730 | 2019-03-29 | ||
| JP2019067730A JP7454914B2 (en) | 2019-03-29 | 2019-03-29 | plastic bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020202727A1 true WO2020202727A1 (en) | 2020-10-08 |
Family
ID=72667947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2020/002376 WO2020202727A1 (en) | 2019-03-29 | 2020-01-23 | Plastic bottle |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3950519A4 (en) |
| JP (1) | JP7454914B2 (en) |
| CN (1) | CN113811490B (en) |
| WO (1) | WO2020202727A1 (en) |
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|---|---|---|---|---|
| US20070045220A1 (en) * | 2005-08-08 | 2007-03-01 | Plastipak Packaging, Inc. | Plastic container |
| JP2008525278A (en) * | 2004-12-24 | 2008-07-17 | アックア ミネラレ エッセ． ベネデット − ソシエタ ペル アチオニ | Plastic bottle base |
| US20100072165A1 (en) * | 2008-09-15 | 2010-03-25 | Alexander Schau | Plastic container |
| JP2012162287A (en) * | 2011-02-04 | 2012-08-30 | Dainippon Printing Co Ltd | Plastic bottle |
| US20130213925A1 (en) * | 2012-02-20 | 2013-08-22 | Krones Ag | Plastic container |
| JP2016155603A (en) * | 2015-01-30 | 2016-09-01 | ナイアガラ・ボトリング・リミテツド・ライアビリテイー・カンパニー | Swirl bell bottle with wavy ribs |
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| MY156895A (en) * | 2009-07-13 | 2016-04-15 | Dainippon Printing Co Ltd | Plastic bottle |
| JP6140386B2 (en) * | 2011-02-04 | 2017-05-31 | 大日本印刷株式会社 | Plastic bottle |
| FR2991302B1 (en) * | 2012-05-31 | 2014-07-04 | Sidel Participations | CONTAINER HAVING A BACKGROUND PROVIDED WITH A DECOUCHEMENT VOUTE |
| JP6300703B2 (en) * | 2014-10-30 | 2018-03-28 | 石塚硝子株式会社 | Carbonated beverage bottles |
| JP7012417B2 (en) * | 2015-05-20 | 2022-01-28 | サントリーホールディングス株式会社 | Aseptic filling bottle |
| JP7241456B2 (en) * | 2017-03-07 | 2023-03-17 | サントリーホールディングス株式会社 | aseptic filling bottle |
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2019
- 2019-03-29 JP JP2019067730A patent/JP7454914B2/en active Active
-
2020
- 2020-01-23 WO PCT/JP2020/002376 patent/WO2020202727A1/en unknown
- 2020-01-23 EP EP20783822.8A patent/EP3950519A4/en active Pending
- 2020-01-23 CN CN202080035192.3A patent/CN113811490B/en active Active
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| JP2008525278A (en) * | 2004-12-24 | 2008-07-17 | アックア ミネラレ エッセ． ベネデット − ソシエタ ペル アチオニ | Plastic bottle base |
| US20070045220A1 (en) * | 2005-08-08 | 2007-03-01 | Plastipak Packaging, Inc. | Plastic container |
| US20100072165A1 (en) * | 2008-09-15 | 2010-03-25 | Alexander Schau | Plastic container |
| JP2012162287A (en) * | 2011-02-04 | 2012-08-30 | Dainippon Printing Co Ltd | Plastic bottle |
| US20130213925A1 (en) * | 2012-02-20 | 2013-08-22 | Krones Ag | Plastic container |
| JP2016155603A (en) * | 2015-01-30 | 2016-09-01 | ナイアガラ・ボトリング・リミテツド・ライアビリテイー・カンパニー | Swirl bell bottle with wavy ribs |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3950519A4 (en) | 2022-12-28 |
| EP3950519A1 (en) | 2022-02-09 |
| CN113811490B (en) | 2024-02-23 |
| JP7454914B2 (en) | 2024-03-25 |
| JP2020164215A (en) | 2020-10-08 |
| CN113811490A (en) | 2021-12-17 |
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