JP7220983B2 - bottle can, bottle can with cap - Google Patents

bottle can, bottle can with cap Download PDF

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JP7220983B2
JP7220983B2 JP2017245234A JP2017245234A JP7220983B2 JP 7220983 B2 JP7220983 B2 JP 7220983B2 JP 2017245234 A JP2017245234 A JP 2017245234A JP 2017245234 A JP2017245234 A JP 2017245234A JP 7220983 B2 JP7220983 B2 JP 7220983B2
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peripheral wall
bottle
axis
bulging
axial direction
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JP2018135153A (en
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一 実末
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アルテミラ製缶株式会社
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Description

本発明は、上端部の外周に雄ネジ部が形成されたネジ付きのボトル缶、およびこのボトル缶にキャップが取り付けられたキャップ付きボトル缶に関するものである。 TECHNICAL FIELD The present invention relates to a screwed bottle-can having a male thread formed on the outer circumference of the upper end, and a capped bottle-can having a cap attached to the bottle-can.

有底円筒状のボトル缶体の開口部を縮径して形成されたボトル缶の口金部には、この口金部を閉塞するキャップに形成された雌ネジ部に螺合する雄ネジ部が形成されている。また、こうした雄ネジ部の下側（ボトル缶体の底部側）には、雄ネジ部の形成されていない拡径部分を残した膨出部が形成されている（例えば、特許文献１を参照）。 The mouthpiece of the bottle can, which is formed by reducing the diameter of the opening of a bottomed cylindrical bottle can body, is formed with a male threaded portion that is screwed into the female threaded portion formed on the cap that closes the mouthpiece. It is In addition, on the lower side of the male threaded portion (on the bottom side of the bottle can body), a bulging portion is formed with an enlarged diameter portion where the male threaded portion is not formed (see, for example, Patent Document 1). ).

こうした口金部における雄ネジ部の下側に形成されている膨出部は、雄ネジ部から缶軸方向の下方に向かうに従い漸次拡径された第１周壁部と、この第１周壁部の下端に連なり、径方向外方へ凸とされた凸曲面部と、この凸曲面部の下端に連なり、缶軸方向の下方に向かうに従い漸次縮径された第２周壁部とから構成されている。 The bulging portion formed on the lower side of the male threaded portion of the mouthpiece includes a first peripheral wall portion whose diameter gradually expands downward in the can axial direction from the male threaded portion, and a lower end of the first peripheral wall portion. and a second peripheral wall portion connected to the lower end of the convex curved surface portion and having a diameter gradually reduced downward in the can axial direction.

近年、ボトル缶の軽量化のために、缶本体の薄肉化を検討している。 In recent years, in order to reduce the weight of bottle cans, thinning of the can body has been studied.

特許第４５７０８３８号公報Japanese Patent No. 4570838

しかしながら、ボトル缶が従来よりも薄肉化されると、口金部の成形時に加わる応力によって膨出部が座屈して口金部が缶軸方向から見て楕円形に変形してしまい、例えばキャップを取り付けた後に一旦取り外したキャップを再び雄ネジ部にねじ込んで口金部にリシールする際のリシールトルクが増大するおそれがある。 However, when the bottle can is made thinner than before, the bulging portion buckles due to the stress applied during molding of the mouthpiece, and the mouthpiece deforms into an elliptical shape when viewed from the can axial direction. There is a risk that resealing torque will increase when the cap, which has been removed once, is resealed to the mouthpiece by screwing it onto the male threaded portion again.

本発明は、このような背景の下になされたもので、口金部に加工応力が加わっても、口金部を構成する膨出部が座屈することを防止できるボトル缶、およびキャップ付きボトル缶を提供することを目的としている。 The present invention has been devised against such a background, and provides a bottle can and a bottle can with a cap that can prevent buckling of a bulging portion constituting a mouthpiece even when a processing stress is applied to the mouthpiece. intended to provide.

前記課題を解決して、このような目的を達成するために、本発明の発明者等が鋭意研究した結果、特に口金部において雄ネジ部の下端は膨出部に入り込む形となっているので、口金部の成形時に缶軸方向に作用する応力により、特にボトル缶を薄肉化した場合には雄ネジ部の最下部を起点として膨出部が座屈して口金部が楕円形に変形し易くなるとの知見を得るに至った。 In order to solve the above-mentioned problems and achieve such an object, the inventors of the present invention conducted extensive research, and found that the lower end of the male screw part is inserted into the bulging part, especially in the mouthpiece. Especially when the bottle can is thinned, the bulging portion tends to buckle starting from the bottom of the male screw part due to the stress acting in the can axial direction during molding of the mouthpiece, and the mouthpiece tends to deform into an elliptical shape. I have come to the knowledge that

そこで、このような知見に基づき、本発明のボトル缶は、口金部にキャップが螺着される構成とされたボトル缶であって、前記口金部は、缶軸方向上側の始端および缶軸方向下側の終端の間で螺設された雄ネジ部と、この雄ネジ部の缶軸方向下端に連設されるとともに、下方に向かうに従い漸次拡径された第１周壁部、および該第１周壁部の下端に径方向外方へ凸とされた凸曲面部を介して連設されるとともに、下方に向かうに従い漸次縮径された第２周壁部を有する膨出部とを備え、前記第１周壁部は、この第１周壁部の缶軸方向上側に隣接する前記雄ネジ部のネジ谷と前記凸曲面部との間に、第１直線部を有し、前記第１直線部は、前記缶軸に沿った前記口金部の断面において直線状に延び、前記第１直線部は、前記膨出部の全周に亙って設けられ、この第１直線部が前記断面において前記缶軸に平行な直線に対してなす傾斜角度が、前記膨出部の全周に亙って１３．９°以下であり、前記傾斜角度は、前記凸曲面部と、前記第１周壁部の缶軸方向上側に隣接する前記雄ネジ部の前記ネジ谷との間の間隔により周方向に向けて変化してゆき、この間隔が最も小さくなる前記雄ネジ部の最下部周辺において最大となり、前記第２周壁部は、前記缶軸に沿った前記口金部の断面において直線状に延びる第２直線部を前記膨出部の全周に亙って有し、前記断面において、前記凸曲面部に外接する缶軸を中心とした円筒面がなす直線と前記第２直線部との交点と、前記第１周壁部の缶軸方向上側に隣接する前記雄ネジ部のネジ谷の谷底との間の缶軸方向の距離が、前記膨出部の全周に亙って３．９ｍｍ以上であることを特徴とする。 Therefore, based on such findings, the bottle can of the present invention is a bottle can having a structure in which a cap is screwed onto a mouthpiece, wherein the mouthpiece has a starting end on the upper side in the can axial direction and a a male threaded portion threaded between the ends of the lower side; a first peripheral wall portion connected to the lower end of the male threaded portion in the can axial direction and having a diameter that gradually expands downward; a protruding portion having a second peripheral wall portion which is connected to the lower end of the peripheral wall portion via a convex curved surface portion which protrudes radially outward and whose diameter gradually decreases downward; The first peripheral wall portion has a first straight portion between the root of the male screw portion adjacent to the upper side in the can axial direction of the first peripheral wall portion and the convex curved surface portion, and the first straight portion is: The first linear portion extends linearly in a cross section of the mouthpiece portion along the can axis, and the first linear portion is provided over the entire circumference of the bulging portion. is 13.9° or less over the entire circumference of the bulging portion, and the inclination angle is between the convex curved surface portion and the can axis of the first peripheral wall portion It changes in the circumferential direction according to the distance between the thread root of the male screw portion adjacent to the direction upper side, and becomes maximum around the lowest portion of the male screw portion where this distance is the smallest. The second peripheral wall portion has a second linear portion extending linearly over the entire circumference of the bulging portion in a cross section of the mouthpiece portion along the can axis, and in the cross section, the convex curved surface portion between the intersection of the straight line formed by the circumscribing cylindrical surface centered on the can axis and the second straight line portion, and the bottom of the screw root of the male screw portion adjacent to the upper side of the first peripheral wall portion in the can axial direction A distance in the axial direction of the can is 3.9 mm or more over the entire circumference of the bulging portion .

また、本発明のキャップ付きボトル缶は、このようなボトル缶と、前記雄ネジ部に螺合する雌ネジ部が形成された有底筒状のキャップとを備えたことを特徴とする。 Further, the capped bottle-can of the present invention is characterized by comprising such a bottle-can and a bottomed cylindrical cap having a female threaded portion that is screwed onto the male threaded portion.

本発明のボトル缶およびキャップ付きボトル缶によれば、膨出部の第１周壁部が、この第１周壁部の缶軸方向上側に隣接する雄ネジ部のネジ谷と前記凸曲面部との間に、缶軸に沿った前記口金部の断面において直線状に延びる第１直線部を前記膨出部の全周に亙って有しており、この第１直線部が前記断面において前記缶軸に平行な直線に対してなす傾斜角度が前記膨出部の全周に亙って１３．９°以下であって、缶軸と平行に近い角度とされている。このため、口金部を含むボトル缶が薄肉化されても、口金部の成形時に缶軸方向に作用する応力に対する強度を膨出部の全周に亙って向上させることができ、雄ネジ部の最下部を起点として膨出部が座屈するのを防止することができる。
また、前記第２周壁部が、前記缶軸に沿った前記口金部の断面において直線状に延びる第２直線部を前記膨出部の全周に亙って有し、前記断面において、前記凸曲面部に外接する缶軸を中心とした円筒面がなす直線と前記第２直線部との交点と、前記第１周壁部の缶軸方向上側に隣接する前記雄ネジ部のネジ谷の谷底との間の缶軸方向の距離は、前記膨出部の全周に亙って３．９ｍｍ以上である。これにより、膨出部の前記第１直線部の缶軸方向の長さを確保して、缶軸方向に作用する応力に対する強度をさらに一層確実に向上させることができる。 According to the bottle can and the bottle can with the cap of the present invention, the first peripheral wall portion of the bulging portion is formed between the root of the male screw portion adjacent to the upper side in the can axial direction of the first peripheral wall portion and the convex curved surface portion. Between them, a first linear portion extending linearly in a cross section of the mouthpiece along the can axis is provided over the entire circumference of the bulging portion, and the first linear portion extends in the cross section of the can. The angle of inclination with respect to a straight line parallel to the axis is 13.9° or less over the entire circumference of the bulging portion, which is nearly parallel to the can axis. Therefore, even if the bottle can including the mouthpiece is made thinner, the strength against the stress acting in the can axial direction during molding of the mouthpiece can be improved over the entire periphery of the bulging portion. It is possible to prevent the bulging portion from buckling starting from the bottom of the .
Further, the second peripheral wall portion has a second linear portion extending linearly along the entire periphery of the bulging portion in a cross section of the mouthpiece portion along the can axis, and the convex portion an intersection point between a straight line formed by a cylindrical surface centered on the can axis circumscribing the curved surface portion and the second straight line portion; is 3.9 mm or more over the entire circumference of the bulging portion. As a result, the length of the first linear portion of the bulging portion in the can axial direction can be ensured, and the strength against the stress acting in the can axial direction can be further reliably improved.

ここで、このような膨出部の缶軸方向に作用する応力に対する強度を一層確実に向上させるには、前記傾斜角度は、前記膨出部の全周に亙って１０°以下であって、第１直線部の傾斜角度がより缶軸と平行に近い角度とされることが望ましい。 Here, in order to more reliably improve the strength of such a bulging portion against stress acting in the can axial direction, the inclination angle should be 10° or less over the entire circumference of the bulging portion. It is desirable that the inclination angle of the first straight portion is closer to parallel to the can axis.

以上説明したように、本発明によれば、缶本体を薄肉化した場合でも、口金部に作用する缶軸方向の応力によって口金部を構成する膨出部が座屈するのを防止することができるボトル缶、キャップ付きボトル缶を提供することができる。 As described above, according to the present invention, even when the thickness of the can body is reduced, it is possible to prevent the buckling of the bulging portion constituting the mouthpiece due to the stress acting on the mouthpiece in the can axial direction. Bottle cans, bottle cans with caps can be provided.

本発明のボトル缶の一実施形態を示す一部破断側面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a partially broken side view which shows one Embodiment of the bottle can of this invention. 図１に示す実施形態の口金部周辺を示す拡大側面図である。FIG. 2 is an enlarged side view showing the periphery of the base portion of the embodiment shown in FIG. 1; 図１に示す実施形態にキャップを取り付けた本発明のキャップ付きボトル缶の一実施形態の口金部周辺を示す一部破断側面図である。1. It is a partially broken side view which shows the periphery of the mouthpiece part of one embodiment of the bottle-can with a cap of this invention which attached the cap to the embodiment shown in FIG. 図２のＺＺ断面（缶軸に沿った断面）を示す拡大断面図である。3 is an enlarged cross-sectional view showing the ZZ cross section (cross section along the can axis) of FIG. 2; FIG. 図１ないし図４に示す実施形態の変形例を示す、図２のＺＺ断面に相当する拡大断面図である。FIG. 5 is an enlarged sectional view corresponding to the ZZ section of FIG. 2, showing a modification of the embodiment shown in FIGS. 1 to 4; 本発明の実施例に対する比較例における図２のＺＺ断面に相当する拡大断面図である。FIG. 3 is an enlarged sectional view corresponding to the ZZ section of FIG. 2 in a comparative example with respect to the embodiment of the present invention;

図１および図２は、本発明のボトル缶の一実施形態を示すものであり、図３は、本発明のキャップ付きボトル缶の一実施形態を示すものである。本実施形態のボトル缶１は、底部２と、この底部２と一体に形成されて底部２の外周縁から上端側（図１において上側）に延びる外周部３とを備えた缶軸Ｃを中心とする概略多段の有底円筒状を成す缶本体１１を有する。 1 and 2 show one embodiment of the bottle-can of the present invention, and FIG. 3 shows one embodiment of the capped bottle-can of the present invention. The bottle can 1 of the present embodiment is centered on a can axis C, which includes a bottom portion 2 and an outer peripheral portion 3 integrally formed with the bottom portion 2 and extending from the outer peripheral edge of the bottom portion 2 to the upper end side (upward in FIG. 1). It has a can body 11 having a substantially multi-stage cylindrical shape with a bottom.

底部２には、缶軸Ｃ方向の内側（缶本体１１の上端側）に凹む断面略円弧状のドーム部２ａが中央に形成されるとともに、このドーム部２ａの外周には缶軸Ｃ方向の外側（缶本体１１の下端側）に突出する環状凸部２ｂが缶軸Ｃ回りの周方向に連続して形成されている。 A dome portion 2a having a substantially arcuate cross-section is formed in the center of the bottom portion 2 and recessed inward in the direction of the can axis C (upper end side of the can body 11). An annular convex portion 2b protruding outward (lower end side of the can body 11) is continuously formed in the circumferential direction around the can axis C. As shown in FIG.

また、外周部３には底部２から缶本体１１の上端側の開口部４に向けて順に、缶軸Ｃを中心とした円筒状の胴部５と、上端側に向かうに従い一定の傾斜で漸次縮径する円錐台面状の肩部６と、この肩部６からさらに上端側に向かって延びる筒状の首部７と、首部７の上端から外周側に張り出す膨出部８と、雄ネジ部９と、カール部１０とが形成され、首部７よりも上側のこれら膨出部８、雄ネジ部９、カール部１０を含む部分が口金部１２を構成している。 In addition, on the outer peripheral portion 3, a cylindrical body portion 5 centering on the can axis C is arranged in order from the bottom portion 2 toward the opening portion 4 at the upper end side of the can body 11, and gradually with a constant inclination toward the upper end side. A truncated conical shoulder portion 6 with a reduced diameter, a cylindrical neck portion 7 extending from the shoulder portion 6 toward the upper end side, a bulging portion 8 projecting from the upper end of the neck portion 7 to the outer peripheral side, and a male screw portion. 9 and a curled portion 10 are formed.

図２は、この口金部１２の周辺を示す拡大側面図である。雄ネジ部９は、カール部１０側から缶軸Ｃ方向から見た平面視において時計回り方向に向かうに従い下端側に向かって螺旋状に螺設されており、ネジ山９ａが缶軸Ｃ方向上側の始端から不完全ネジ部９ｂにおいて徐々に外周側に突出し、ネジ始まり部９ｃにおいてネジ山９ａの左右が略対称なネジとして有効に機能する完全ネジ部９ｄとなる。さらに、雄ネジ部９は、この完全ネジ部９ｄにおいてネジ山９ａが１巻以上（例えば２．２巻）周回したところで内周側に徐々に後退して再び不完全ネジ部９ｂとなり、缶軸Ｃ方向下側の終端において膨出部８の上端部に没する。 FIG. 2 is an enlarged side view showing the periphery of this base portion 12. As shown in FIG. The male threaded portion 9 is spirally threaded toward the lower end in a clockwise direction in plan view viewed from the side of the curled portion 10 in the direction of the can axis C, and the screw thread 9a extends upward in the direction of the can axis C. The incomplete threaded portion 9b gradually protrudes outward from the starting end of the thread, and the screw thread 9a becomes a fully threaded portion 9d that effectively functions as a substantially symmetrical screw on the left and right sides of the screw thread 9a at the thread start portion 9c. Further, the male threaded portion 9 gradually retracts toward the inner peripheral side when the threaded portion 9a has made one or more turns (for example, 2.2 turns) in the fully threaded portion 9d to become an incompletely threaded portion 9b again. It sinks into the upper end of the bulging portion 8 at the lower end in the C direction.

この膨出部８は、図３に拡大して示すように、缶本体１１の下方に向かうに従い漸次拡径された第１周壁部８ａと、この第１周壁部８ａの下端に繋がり、径方向外方へ凸とされた凸曲面部８ｂと、この凸曲面部８ｂの下端に繋がり、缶本体１１の下方に向かうに従い漸次縮径された第２周壁部８ｃとを備えている。 As shown in an enlarged view in FIG. 3, the bulging portion 8 is connected to a first peripheral wall portion 8a whose diameter gradually increases toward the bottom of the can body 11, and to the lower end of the first peripheral wall portion 8a. A convex curved surface portion 8b that protrudes outward and a second peripheral wall portion 8c that is connected to the lower end of the convex curved surface portion 8b and whose diameter gradually decreases toward the bottom of the can body 11 is provided.

そして、第１周壁部８ａは、この第１周壁部８ａの缶軸Ｃ方向上側に隣接する雄ネジ部９のネジ谷９ｅと凸曲面部８ｂとの間に、図４に示すように缶軸Ｃに沿った口金部１２の断面において直線状に延びる第１直線部８ｄを膨出部８の全周に亙って有しており、この第１直線部８ｄが前記断面において缶軸Ｃに平行な直線Ｌ１に対してなす傾斜角度θは、雄ネジ部９の最下部を含めて膨出部８の全周に亙って１３．９°以下とされている。ここで、図４は、雄ネジ部９の最下部付近において傾斜角度θが１３．８７３°の場合を示している。 As shown in FIG. 4 , the first peripheral wall portion 8a is provided between the screw trough 9e of the male screw portion 9 adjacent to the upper side in the can axis C direction of the first peripheral wall portion 8a and the convex curved surface portion 8b. A first linear portion 8d extending linearly in the cross section of the mouthpiece portion 12 along C is provided over the entire circumference of the bulging portion 8, and the first linear portion 8d extends along the can axis C in the cross section. The inclination angle .theta. formed with respect to the parallel straight line L1 is set to 13.9.degree. Here, FIG. 4 shows a case where the inclination angle θ is 13.873° near the bottom of the male screw portion 9 .

このような傾斜角度θは、膨出部８の凸曲面部８ｂと、第１周壁部８ａの缶軸Ｃ方向上側に隣接する雄ネジ部９のネジ谷９ｅとの間の間隔により周方向に向けて変化してゆき、この間隔が最も小さくなる雄ネジ部９の最下部周辺において最大となる。そして、この最大となる傾斜角度θが、本実施形態では１３．９°以下の１３．８７３°とされている。 Such an inclination angle θ is determined in the circumferential direction by the space between the convex curved surface portion 8b of the bulging portion 8 and the screw root 9e of the male screw portion 9 adjacent to the upper side of the first peripheral wall portion 8a in the can axis C direction. , and becomes maximum around the lowermost portion of the male screw portion 9 where this interval is the smallest. In this embodiment, the maximum inclination angle θ is 13.873°, which is 13.9° or less.

また、本実施形態では、前記第２周壁部８ｃも、缶軸Ｃに沿った口金部１２の断面において直線状に延びる第２直線部８ｅを膨出部８の全周に亙って有している。そして、前記断面において、凸曲面部８ｂに外接する缶軸Ｃを中心とした円筒面がなす直線Ｌ２と第２直線部８ｅの延長線Ｌ３との交点Ｐと、第１周壁部８ａの缶軸Ｃ方向上側に隣接する雄ネジ部９のネジ谷９ｅの谷底との間の缶軸Ｃ方向の距離Ｄは、本実施形態では膨出部８の全周に亙って３．９ｍｍ以上とされている。 In this embodiment, the second peripheral wall portion 8c also has a second linear portion 8e extending linearly along the entire periphery of the bulging portion 8 in the cross section of the mouthpiece portion 12 along the can axis C. ing. In the cross section, the intersection point P of the straight line L2 formed by the cylindrical surface centered on the can axis C circumscribing the convex curved surface portion 8b and the extension line L3 of the second straight portion 8e and the can axis of the first peripheral wall portion 8a In this embodiment, the distance D in the can axis C direction between the root of the thread root 9e of the male screw portion 9 adjacent to the upper side in the C direction is 3.9 mm or more over the entire circumference of the bulging portion 8. ing.

このようなボトル缶１を製造するには、まずカッピングプレス機によるカッピングプレス工程においてアルミニウムまたはアルミニウム合金等の金属板を円板状に打ち抜いて絞り加工を施すことにより深さの浅いカップ状素材を製造する。次いで、このカップ状素材にＤＩプレス機によるＤＩプレス工程において再絞りおよびしごき加工を施して缶軸Ｃ方向に延伸することにより、底部２に前記ドーム部２ａと環状凸部２ｂが形成された有底円筒体（ＤＩ缶）を成形する。 In order to manufacture such a bottle can 1, first, in a cupping press process using a cupping press machine, a metal plate such as aluminum or an aluminum alloy is punched into a disc shape and drawn to form a shallow cup-shaped material. manufacture. Next, the cup-shaped material is subjected to redrawing and ironing in a DI pressing process using a DI press machine and stretched in the direction of the can axis C, whereby the dome portion 2a and the annular convex portion 2b are formed in the bottom portion 2. Mold the bottom cylinder (DI can).

カッピングプレス工程においてカップ状素材に成形される金属板は、本実施形態では元板厚が０．２８５ｍｍ～０．３００ｍｍのＪＩＳ Ｈ ４０００におけるＡ３００４またはＡ３１０４のアルミニウム合金板であって、２０５℃×２０分ベーキング後の０．２％耐力が２３５Ｎ／ｍｍ２～２６５Ｎ／ｍｍ２の範囲のものが用いられる。 In the present embodiment, the metal plate formed into the cup-shaped material in the cupping press step is an aluminum alloy plate of A3004 or A3104 in JIS H 4000 having an original plate thickness of 0.285 mm to 0.300 mm, and The 0.2% yield strength after minute baking is in the range of 235 N/mm 2 to 265 N/mm 2 .

また、このカップ状素材から成形される有底円筒体には、外周部に前記缶軸Ｃを中心とした円筒部が形成され、この円筒部の外径は缶本体１１の胴部５の外径と略等しい一定外径である。ただし、この円筒部は、その上端側部分の厚さが０．２２０ｍｍ～０．２２５ｍｍの範囲である一方で、下端側部分の厚さは０．１１０ｍｍ～０．１３５ｍｍの範囲であって、上端側部分よりも薄い。 In addition, the bottomed cylindrical body formed from this cup-shaped material has a cylindrical portion centered on the can axis C on the outer peripheral portion. It has a constant outer diameter approximately equal to the diameter. However, the cylindrical portion has a thickness in the range of 0.220 mm to 0.225 mm at the upper end side, and a thickness in the range of 0.110 mm to 0.135 mm at the lower end side. Thinner than the sides.

このように成形された有底円筒体は、第１の洗浄工程において洗浄、乾燥され、次いで塗装工程において内外面に塗装が施されて焼き付けられる。そして、塗装が施された有底円筒体は、ボトルネッカーによるボトルネック成形工程において、円筒部の前記上端側部分の下端側が金型によって縮径されて前記肩部６と首部７が成形される。 The bottomed cylindrical body formed in this way is washed and dried in the first washing step, and then painted on the inner and outer surfaces and baked in the painting step. Then, in the bottleneck molding process using a bottle necker, the coated bottomed cylindrical body is formed with the shoulder portion 6 and the neck portion 7 by reducing the diameter of the lower end side of the upper end side portion of the cylindrical portion with a mold. .

次いで、首部７の上端側が拡径工具によって拡径されて前記膨出部８が形成されるとともに、この膨出部８よりもさらに上端側にねじ切り加工が施されて前記雄ネジ部９が形成される。さらに、雄ネジ部９よりも上端側が外周側に折り返されてカールされてからスロットル加工によって潰されてカール部１０が形成され、図１に示したようなボトル缶１の缶本体１１に成形される。 Next, the upper end side of the neck portion 7 is expanded in diameter by a diameter expanding tool to form the bulging portion 8, and the upper end side of the bulging portion 8 is threaded to form the male screw portion 9. be done. Further, the upper end side of the male threaded portion 9 is folded back to the outer peripheral side and curled, and then crushed by throttle processing to form a curled portion 10, which is formed into the can body 11 of the bottle can 1 as shown in FIG. be.

こうして成形された缶本体１１は、第２の洗浄工程によって洗浄、乾燥された後に、検査工程においてピンホールの有無や外面の異物付着、傷、汚れ、印刷不良等が検査されて飲料工場等に搬送され、飲料等の内容物が充填された後に、図３に示すように開口部４を覆ってカール部１０から雄ネジ部９および膨出部８にかけてキャップ２０が取り付けられて封止され、本発明の一実施形態のキャップ付きボトル缶２１として出荷される。なお、缶本体１１の前記各工程の間や各工程中には、有底円筒体の上端縁を切断するトリミングや、必要に応じて底部の環状凸部２ｂの断面形状を再成形するボトムリフォームが行われる。 The can body 11 formed in this way is washed and dried in the second washing process, and then inspected in the inspection process for the presence or absence of pinholes, adhesion of foreign matter to the outer surface, scratches, dirt, printing defects, etc., and is sent to a beverage factory or the like. After being conveyed and filled with contents such as beverages, as shown in FIG. It is shipped as a capped bottle-can 21 of one embodiment of the present invention. It should be noted that trimming for cutting the upper edge of the bottomed cylindrical body and bottom reforming for reshaping the cross-sectional shape of the annular convex portion 2b at the bottom as necessary are carried out between and during each process of the can body 11. is done.

キャップ２０は、缶本体１１のカール部１０を覆う天板部２２と、雄ネジ部９を覆う周壁部２３とが一体に形成されてなる。周壁部２３には、雄ネジ部９に螺合する雌ネジ部２４が形成されて螺着されるとともに、この雌ネジ部２４よりも下側の周壁部２３の下端縁が膨出部８の第２周壁部８ｃに巻締められている。また、キャップ２０の天板部２２と口金部１２との間には、シール部材（シーリングライナー）２６が配されている。このように、缶本体１１に形成された雄ネジ部９と、キャップ２０に形成された雌ネジ部２４によって、キャップ２０の開栓後も、キャップ２０の再閉栓（リシール）が自在にされる。 The cap 20 is formed by integrally forming a top plate portion 22 covering the curled portion 10 of the can body 11 and a peripheral wall portion 23 covering the male screw portion 9 . The peripheral wall portion 23 is formed with a female threaded portion 24 that is screwed into the male threaded portion 9 , and the lower edge of the peripheral wall portion 23 below the female threaded portion 24 is the bulging portion 8 . It is seamed to the second peripheral wall portion 8c. A sealing member (sealing liner) 26 is arranged between the top plate portion 22 of the cap 20 and the mouthpiece portion 12 . In this way, the male threaded portion 9 formed on the can body 11 and the female threaded portion 24 formed on the cap 20 allow the cap 20 to be freely resealed even after the cap 20 has been opened. .

このように構成されたボトル缶１およびキャップ付きボトル缶２１によれば、膨出部８の第１周壁部８ａが、この第１周壁部８ａの缶軸Ｃ方向上側に隣接する雄ネジ部９のネジ谷９ｅと凸曲面部８ｂとの間に、缶軸Ｃに沿った口金部１２の断面において直線状に延びる第１直線部８ｄを膨出部８の全周に亙って有しており、この第１直線部８ｄが断面において缶軸Ｃに平行な直線Ｌ１に対してなす傾斜角度θは、膨出部８の全周に亙って１３．９°以下であって、すなわち缶軸Ｃと平行に近い角度とされている。 According to the bottle can 1 and capped bottle can 21 configured in this manner, the first peripheral wall portion 8a of the bulging portion 8 is connected to the male screw portion 9 adjacent to the upper side of the first peripheral wall portion 8a in the can axis C direction. A first linear portion 8d extending linearly in a cross section of the mouthpiece portion 12 along the can axis C is provided over the entire periphery of the bulging portion 8 between the screw root 9e and the convex curved surface portion 8b. The inclination angle θ of the first straight portion 8d in cross section with respect to the straight line L1 parallel to the can axis C is 13.9° or less over the entire circumference of the bulging portion 8, that is, the can The angle is almost parallel to the axis C.

このため、口金部１２の成形時に缶軸Ｃ方向に作用する応力に対する強度を膨出部８の全周に亙って向上させることができるので、口金部１２を含めてボトル缶１の缶本体１１が薄肉化しても、雄ネジ部９の最下部を起点として膨出部８が座屈するのを防止することができる。従って、このような膨出部８の座屈による口金部１２の変形によって雄ネジ部９とキャップ２０の雌ネジ部２４との摩擦抵抗が増大し、上述したキャップ２０のリシールの際に要するトルクが大きくなって再閉栓し難くなるのを防ぐことができる。 Therefore, the strength against stress acting in the direction of the can axis C during molding of the mouthpiece 12 can be improved over the entire circumference of the bulging portion 8, so that the can body of the bottle can 1 including the mouthpiece 12 can be improved. Even if 11 is thinned, it is possible to prevent buckling of bulging portion 8 starting from the lowermost portion of male screw portion 9 . Therefore, the deformation of the mouthpiece 12 due to the buckling of the bulging portion 8 increases the frictional resistance between the male threaded portion 9 and the female threaded portion 24 of the cap 20, and the torque required for resealing the cap 20 is increased. It is possible to prevent it from becoming difficult to re-close due to the increase of

ここで、このような膨出部８の缶軸Ｃ方向に作用する応力に対する強度を一層確実に向上させるには、前記傾斜角度θは１０°以下であるのが望ましい。図５に示したのは、この傾斜角度θが７．８５°の場合であり、図４に示した１３．８７３°の場合よりも第１直線部８ｄが缶軸Ｃに平行に近く、口金部１２の成形時に缶軸Ｃ方向に作用する応力に対する強度を一層向上させて、膨出部８の座屈による口金部１２の変形をさらに確実に防止することができる。 Here, in order to more reliably improve the strength of the bulging portion 8 against stress acting in the direction of the can axis C, the inclination angle θ is preferably 10° or less. FIG. 5 shows the case in which the inclination angle θ is 7.85°. The strength against the stress acting in the can axis C direction during molding of the portion 12 can be further improved, and the deformation of the mouthpiece portion 12 due to the buckling of the bulging portion 8 can be more reliably prevented.

これらの実施形態に対して、図６は、後述する本発明の実施例に対する比較例において傾斜角度θが２２．８６６°の場合であり、説明のために実施形態と相当する部分には同一の符号を配してあるが、第１直線部８ｄが缶軸Ｃに平行な直線Ｌ１に対して大きく傾斜しているので、缶軸Ｃ方向に作用する応力によって膨出部８に座屈が発生し易いことが分かる。なお、前記傾斜角度θの下限値は０°よりも大きければよいが、実際には７．１°程度までとされるのが望ましい。 In contrast to these embodiments, FIG. 6 shows a case where the inclination angle θ is 22.866° in a comparative example to the embodiment of the present invention, which will be described later. Although reference numerals are assigned, since the first straight portion 8d is greatly inclined with respect to the straight line L1 parallel to the can axis C, buckling occurs in the bulging portion 8 due to the stress acting in the direction of the can axis C. I know it's easy. It should be noted that the lower limit of the inclination angle .theta. should be greater than 0.degree., but in practice it is desirable to be up to about 7.1.degree.

さらに、本実施形態では、膨出部８の第２周壁部８ｃも、缶軸Ｃに沿った口金部１２の断面において直線状に延びる第２直線部８ｅを膨出部８の全周に亙って有しており、前記断面において、凸曲面部８ｂに外接する缶軸Ｃを中心とした円筒面がなす直線Ｌ２と第２直線部８ｅとの交点Ｐと、第１周壁部８ａの缶軸Ｃ方向上側に隣接する雄ネジ部９のネジ谷９ｅの谷底との間の缶軸Ｃ方向の距離Ｄが、やはり膨出部８の全周に亙って３．９ｍｍ以上とされている。 Furthermore, in the present embodiment, the second peripheral wall portion 8c of the bulging portion 8 also has a second linear portion 8e extending linearly in the cross section of the mouthpiece portion 12 along the can axis C over the entire circumference of the bulging portion 8. In the cross section, the intersection point P between the second straight line portion 8e and the straight line L2 formed by the cylindrical surface centered on the can axis C circumscribing the convex curved surface portion 8b and the can of the first peripheral wall portion 8a The distance D in the direction of the can axis C between the root of the thread root 9e of the male threaded portion 9 adjacent to the upper side in the direction of the axis C is 3.9 mm or more over the entire circumference of the bulging portion 8. .

これに伴い、上述のように缶軸Ｃに平行に近い傾斜角度θの膨出部８における第１直線部８ｄの缶軸Ｃ方向の長さも長く確保することができるので、缶軸Ｃ方向に作用する応力に対する強度をさらに一層確実に向上させることができる。ただし、この距離Ｄが長くなりすぎると、下端縁が膨出部８の第２周壁部８ｃに巻締められるキャップ２０の周壁部２３の缶軸Ｃ方向の長さも長くなり、キャップ付きボトル缶２１としての軽量化を損ねることになるので、距離Ｄは７．０ｍｍ程度までとされるのが望ましい。 Along with this, it is possible to secure a long length in the direction of the can axis C of the first linear portion 8d of the bulging portion 8 having an inclination angle θ nearly parallel to the can axis C as described above. The strength against acting stress can be improved even more reliably. However, if the distance D becomes too long, the length of the peripheral wall portion 23 of the cap 20 whose lower end edge is wound around the second peripheral wall portion 8c of the bulging portion 8 in the direction of the can axis C also becomes long. Therefore, it is desirable that the distance D is up to about 7.0 mm.

以下、本発明の実施例を挙げて、本発明の効果について実証する。本実施例では、前記の実施形態に基づき、膨出部８の第１直線部８ｄが缶軸Ｃに沿った断面において缶軸Ｃに平行な直線Ｌ１に対してなす傾斜角度θが膨出部８の全周に亙って１３．９°以下のボトル缶１を５種、それぞれ１０缶ずつ成形し、キャップ２０をキャッピングしてキャップ付きボトル缶２１を製造した。 Hereinafter, the effects of the present invention will be demonstrated by giving Examples of the present invention. In this embodiment, based on the above-described embodiment, the inclination angle θ formed by the first straight portion 8d of the bulging portion 8 with respect to the straight line L1 parallel to the can axis C in the cross section along the can axis C is the bulging portion 5 types of bottle cans 1 having an angle of 13.9° or less over the entire circumference of 8, 10 cans each were molded, capped with a cap 20, and a capped bottle can 21 was manufactured.

また、この実施例に対する比較例として、最大の傾斜角度が１３．９°よりも大きなボトル缶を５種、それぞれ１０缶ずつ成形し、同じくキャップ２０をキャッピングしてキャップ付きボトル缶を製造した。これらを、傾斜角度が大きいものからそれぞれ実施例１～５、比較例１～５として、最大の傾斜角度の大きいものから順に、最大の傾斜角度および最短の前記距離Ｄとともに表１に示す。そして、これら実施例１～５と比較例１～５のキャップ付きボトル缶について、キャップを一旦開栓してから再び口金部１２にねじ込んでリシールする際のリシールトルクを測定し、リシール性を確認して評価した。 As a comparative example for this example, 10 cans each of 5 kinds of bottle cans having a maximum inclination angle of more than 13.9° were molded, and the caps 20 were similarly capped to produce bottle cans with caps. These are shown in Table 1 as Examples 1 to 5 and Comparative Examples 1 to 5 in descending order of inclination angle, together with the maximum inclination angle and the shortest distance D, in descending order of the maximum inclination angle. Then, for the capped bottle cans of Examples 1 to 5 and Comparative Examples 1 to 5, the resealing torque was measured when the cap was once opened and screwed into the mouthpiece 12 again to reseal, and the resealability was confirmed. and evaluated.

なお、これら実施例１～５と比較例１～５のボトル缶は、充填される飲料等の内容量が３１０ｍｌ用のものであって、底部２から開口部４までの缶軸Ｃ方向の缶高さが１３２．６ｍｍ、胴部５の直径が約６６ｍｍ、雄ネジ部９の外径が３７ｍｍ、雄ネジ部９のネジ山９ａの高さが０．７２ｍｍ、膨出部８の外径は３７．８ｍｍであった。 The bottle cans of Examples 1 to 5 and Comparative Examples 1 to 5 are for the content of 310 ml of beverage or the like to be filled, and extend from the bottom 2 to the opening 4 in the can axis C direction. The height is 132.6 mm, the diameter of the body portion 5 is about 66 mm, the outer diameter of the male screw portion 9 is 37 mm, the height of the thread 9a of the male screw portion 9 is 0.72 mm, the outer diameter of the bulging portion 8 is It was 37.8 mm.

また、キャッピングの際には、口金部１２に天板部と周壁部を有する有底筒状のキャップ成形体を被せて、９００Ｎ～１０００Ｎの缶軸Ｃ方向の垂直荷重（トッププレッシャー）を加えることにより天板部外周を絞り加工して段部を成形するとともに、缶軸Ｃに対する径方向内周側に１２０Ｎ～１４０Ｎのスレッドローラー先端荷重で周壁部にスレッドローラーにより雄ネジ部９に倣うように雌ネジ部２４を成形し、さらに同じく缶軸Ｃに対する径方向内周側に９０Ｎ～１１０Ｎのスカートローラー先端荷重で周壁部の下端縁をスカートローラーによって膨出部８の第２周壁部８ｃに巻き締め（裾締め）した。 In addition, when capping, a bottomed cylindrical cap molded body having a top plate and a peripheral wall is placed on the mouthpiece 12, and a vertical load (top pressure) of 900 N to 1000 N in the direction of the can axis C is applied. The outer periphery of the top plate portion is drawn by drawing to form a stepped portion, and the thread roller is applied to the peripheral wall portion with a thread roller tip load of 120N to 140N on the inner peripheral side in the radial direction with respect to the can axis C so as to follow the male screw portion 9. The female screw portion 24 is formed, and the bottom edge of the peripheral wall portion is wound around the second peripheral wall portion 8c of the bulging portion 8 by the skirt roller with a skirt roller tip load of 90 N to 110 N on the inner peripheral side in the radial direction with respect to the can axis C. Tightened (hem tightened).

そして、リシール性については、こうしてキャッピングされて口金部１２に取り付けられたキャップを一旦開栓してから再び口金部１２にねじ込んで、元の位置よりも手前に３０°まで戻してリシールしたときに要した最大リシールトルクを測定し、この最大リシールトルクが１０缶中で１０Ｎ・ｃｍ以上となった缶数を表１に記載するとともに、評価としては１０缶中で最大リシールトルクが１０Ｎ・ｃｍ以上となった缶数が０缶であった場合を丸印、１缶だけであった場合を三角印、２缶以上であった場合をバツ印とした。 As for the resealability, when the cap capped and attached to the mouthpiece 12 is once opened, screwed into the mouthpiece 12 again, returned to the front by 30° from the original position, and resealed. The maximum resealing torque required was measured, and the number of cans with a maximum resealing torque of 10 N cm or more out of 10 cans is shown in Table 1. As an evaluation, the maximum resealing torque was 10 N cm or more among the 10 cans. A circle mark indicates that the number of cans that failed was 0, a triangle mark indicates that there was only one can, and a cross mark indicates that there were two or more cans.

Figure 0007220983000001
Figure 0007220983000001

この表１の結果より、最大の傾斜角度が１３．９°よりも大きい比較例１～５のキャップ付きボトル缶では、キャッピングの際の缶軸Ｃ方向の成形荷重によって膨出部に座屈が生じて口金部１２が変形し、缶本体の雄ネジ部とキャップの雌ネジ部との摩擦抵抗が増大することにより、１０Ｎ・ｃｍ以上のリシールトルクを要する缶が１０缶中で２缶以上となった。これに対して、実施例１～５のキャップ付きボトル缶では、１０Ｎ・ｃｍ以上のリシールトルクを要する缶が１０缶中で２缶を越えることはなく、特に傾斜角度が１０°以下の実施例４、５と、実施例２では１０Ｎ・ｃｍ以上のリシールトルクを要する缶は無かった。 From the results in Table 1, in the bottle cans with caps of Comparative Examples 1 to 5, in which the maximum inclination angle is larger than 13.9°, buckling occurs in the bulging portion due to the forming load in the direction of the can axis C during capping. As a result, more than 2 out of 10 cans require a resealing torque of 10 N cm or more due to the increased frictional resistance between the male threaded portion of the can body and the female threaded portion of the cap. became. On the other hand, in the bottle cans with caps of Examples 1 to 5, the number of cans requiring a resealing torque of 10 N·cm or more did not exceed 2 out of 10 cans, and in particular, the inclination angle was 10° or less. 4, 5, and Example 2, none of the cans required a resealing torque of 10 N·cm or more.

１ ボトル缶
２ 底部
３ 外周部
４ 開口部
５ 胴部
６ 肩部
７ 首部
８ 膨出部
８ａ 第１周壁部
８ｂ 凸曲面部
８ｃ 第２周壁部
８ｄ 第１直線部
８ｅ 第２直線部
９ 雄ネジ部
９ｅ 第１周壁部８ａの缶軸Ｃ方向上側に隣接する雄ネジ部９のネジ谷
１０ カール部
１１ 缶本体
１２ 口金部
２０ キャップ
２１ キャップ付きボトル缶
２４ 雌ネジ部
Ｃ 缶軸
Ｌ１ 缶軸Ｃに沿った断面における缶軸Ｃに平行な直線
Ｌ２ 缶軸Ｃに沿った断面において凸曲面部８ｂに外接する缶軸Ｃを中心とした円筒面がなす直線
Ｌ３ 缶軸Ｃに沿った断面における第２直線部８ｅの延長線
Ｐ 直線Ｌ２と延長線Ｌ３との交点
Ｄ 缶軸Ｃに沿った断面における交点Ｐと、第１周壁部８ａの缶軸Ｃ方向上側に隣接する雄ネジ部９のネジ谷９ｅの谷底との間の缶軸Ｃ方向の距離
θ 第１直線部８ｄが缶軸Ｃに沿った断面において直線Ｌ１に対してなす傾斜角度 REFERENCE SIGNS LIST 1 bottle can 2 bottom 3 outer periphery 4 opening 5 body 6 shoulder 7 neck 8 bulging portion 8a first peripheral wall 8b convex curved surface 8c second peripheral wall 8d first straight portion 8e second straight portion 9 male screw Part 9e Thread root of the male threaded portion 9 adjacent to the upper side in the can axis C direction of the first peripheral wall portion 8a 10 Curl portion 11 Can body 12 Mouthpiece portion 20 Cap 21 Capped bottle can 24 Female screw portion C Can shaft L1 Can shaft C A straight line L2 parallel to the can axis C in a cross section along the can axis C A straight line formed by a cylindrical surface centered on the can axis C circumscribing the convex curved surface portion 8b in a cross section along the can axis C L3 A straight line L3 in a cross section along the can axis C 2 Extension line of straight part 8e P Intersection point of straight line L2 and extension line L3 D Screw of male screw part 9 adjacent to intersection point P in a cross section along can axis C on the upper side in can axis C direction of first peripheral wall part 8a Distance in the can axis C direction between the valley 9e and the bottom of the valley θ Angle of inclination of the first straight portion 8d with respect to the straight line L1 in a cross section along the can axis C

Claims (3)

口金部にキャップが螺着される構成とされたボトル缶であって、
前記口金部は、缶軸方向上側の始端および缶軸方向下側の終端の間で螺設された雄ネジ部と、
この雄ネジ部の缶軸方向下端に連設されるとともに、下方に向かうに従い漸次拡径された第１周壁部、および該第１周壁部の下端に径方向外方へ凸とされた凸曲面部を介して連設されるとともに、下方に向かうに従い漸次縮径された第２周壁部を有する膨出部とを備え、
前記第１周壁部は、この第１周壁部の缶軸方向上側に隣接する前記雄ネジ部のネジ谷と前記凸曲面部との間に、第１直線部を有し、
前記第１直線部は、前記缶軸に沿った前記口金部の断面において直線状に延び、
前記第１直線部は、前記膨出部の全周に亙って設けられ、
この第１直線部が前記断面において前記缶軸に平行な直線に対してなす傾斜角度が、前記膨出部の全周に亙って１３．９°以下であり、
前記傾斜角度は、前記凸曲面部と、前記第１周壁部の缶軸方向上側に隣接する前記雄ネジ部の前記ネジ谷との間の間隔により周方向に向けて変化してゆき、この間隔が最も小さくなる前記雄ネジ部の最下部周辺において最大となり、
前記第２周壁部は、前記缶軸に沿った前記口金部の断面において直線状に延びる第２直線部を前記膨出部の全周に亙って有し、
前記断面において、前記凸曲面部に外接する缶軸を中心とした円筒面がなす直線と前記第２直線部との交点と、前記第１周壁部の缶軸方向上側に隣接する前記雄ネジ部のネジ谷の谷底との間の缶軸方向の距離が、前記膨出部の全周に亙って３．９ｍｍ以上であることを特徴とするボトル缶。 A bottle can configured such that a cap is screwed onto a mouthpiece,
a male screw threaded between a starting end on the upper side in the axial direction of the can and a terminal end on the lower side in the axial direction of the can;
A first peripheral wall portion connected to the lower end of the male screw portion in the can axial direction and gradually increasing in diameter downward, and a convex curved surface projecting radially outward at the lower end of the first peripheral wall portion. a bulging portion having a second peripheral wall portion that is connected via a portion and has a diameter that gradually decreases downward,
The first peripheral wall portion has a first linear portion between the root of the male screw portion adjacent to the upper side in the can axial direction of the first peripheral wall portion and the convex curved surface portion,
The first linear portion extends linearly in a cross section of the mouthpiece along the can axis,
The first linear portion is provided over the entire circumference of the bulging portion,
an inclination angle of the first straight portion with respect to a straight line parallel to the can axis in the cross section is 13.9° or less over the entire circumference of the bulging portion;
The inclination angle changes in the circumferential direction according to the distance between the convex curved surface portion and the thread root of the male screw portion adjacent to the upper side in the can axial direction of the first peripheral wall portion. becomes maximum around the lowest portion of the male screw portion where is the smallest,
the second peripheral wall portion has a second linear portion extending linearly in a cross section of the mouthpiece portion along the can axis along the entire periphery of the bulging portion;
In the cross section, the intersection of a straight line formed by a cylindrical surface centered on the can axis circumscribing the convex curved surface portion and the second straight line portion, and the male screw portion adjacent to the upper side of the first peripheral wall portion in the can axial direction. A bottle can, wherein the distance in the can axial direction between the bottom of the screw root of the bulging portion is 3.9 mm or more over the entire circumference of the bulging portion. 前記傾斜角度は、前記膨出部の全周に亙って１０°以下であることを特徴とする請求項１に記載のボトル缶。 2. The bottle can according to claim 1, wherein the inclination angle is 10[deg.] or less over the entire circumference of the bulging portion. 請求項１または請求項２に記載のボトル缶と、前記雄ネジ部に螺合する雌ネジ部が形成された有底筒状のキャップとを備えたことを特徴とするキャップ付きボトル缶。 3. A bottle can with a cap, comprising: the bottle can according to claim 1 or 2 ; and a bottomed cylindrical cap having a female threaded portion that is screwed onto the male threaded portion.
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JP2002096895A (en) 2000-09-22 2002-04-02 Japan Crown Cork Co Ltd Cap sealing apparatus
US20050127077A1 (en) 2001-12-04 2005-06-16 Exal Corporation Method of manufacturing an aluminum receptacle with threaded outsert
JP2006036255A (en) 2004-07-26 2006-02-09 Alcoa Closure Systems Japan Ltd Metal container, closure device and drink enclosed in container
JP2006176183A (en) 2004-12-24 2006-07-06 Mitsubishi Materials Corp Bottle can and manufacturing method of the same
JP4570838B2 (en) 2002-08-09 2010-10-27 ユニバーサル製缶株式会社 Method of forming a cap part of a bottle can body and screw forming apparatus
WO2012133391A1 (en) 2011-03-28 2012-10-04 ユニバーサル製缶株式会社 Method for manufacturing threaded bottle can and threaded bottle can
JP2016196331A (en) 2015-04-02 2016-11-24 レッド・ブル・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツングＲｅｄ Ｂｕｌｌ Ｇｍｂｈ Bottle having closing cap

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JP2007091330A (en) * 2005-09-30 2007-04-12 Universal Seikan Kk Bottle can

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002096895A (en) 2000-09-22 2002-04-02 Japan Crown Cork Co Ltd Cap sealing apparatus
US20050127077A1 (en) 2001-12-04 2005-06-16 Exal Corporation Method of manufacturing an aluminum receptacle with threaded outsert
JP4570838B2 (en) 2002-08-09 2010-10-27 ユニバーサル製缶株式会社 Method of forming a cap part of a bottle can body and screw forming apparatus
JP2006036255A (en) 2004-07-26 2006-02-09 Alcoa Closure Systems Japan Ltd Metal container, closure device and drink enclosed in container
JP2006176183A (en) 2004-12-24 2006-07-06 Mitsubishi Materials Corp Bottle can and manufacturing method of the same
WO2012133391A1 (en) 2011-03-28 2012-10-04 ユニバーサル製缶株式会社 Method for manufacturing threaded bottle can and threaded bottle can
JP2016196331A (en) 2015-04-02 2016-11-24 レッド・ブル・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツングＲｅｄ Ｂｕｌｌ Ｇｍｂｈ Bottle having closing cap

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