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JP6696730B2 - Beverage can - Google Patents

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Publication number
JP6696730B2
JP6696730B2 JP2015075349A JP2015075349A JP6696730B2 JP 6696730 B2 JP6696730 B2 JP 6696730B2 JP 2015075349 A JP2015075349 A JP 2015075349A JP 2015075349 A JP2015075349 A JP 2015075349A JP 6696730 B2 JP6696730 B2 JP 6696730B2
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necking
axis direction
outer diameter
lid
beverage
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JP2016005967A (en
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政幸 武井
政幸 武井
加奈子 永澤
加奈子 永澤
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Altemira Can Co Ltd
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Universal Can Corp
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Priority to JP2015075349A priority Critical patent/JP6696730B2/en
Priority to CN201520311196.6U priority patent/CN204776466U/en
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Description

本発明は、有底筒状をなす缶本体と、この缶本体の開口部に巻き締められ、飲み口予定部が設けられた缶蓋と、を備えた飲料缶に関するものである。   The present invention relates to a beverage can having a bottomed tubular can body and a can lid that is wound around an opening of the can body and provided with a planned mouth portion.

有底筒状の円筒容器から成形される飲料用容器として、開口端部に缶蓋が巻き締められた構造の飲料缶が知られている。このような飲料缶は、例えばアルミニウム等の金属板を円形状に打ち抜き、それを絞り加工して有底円筒状のカップ部材を得て、さらにそれを再絞り・しごき加工することにより、缶本体を形成し、この缶本体の開口端部に缶蓋を巻き締めることで成形される。   BACKGROUND ART A beverage can having a structure in which a can lid is wound around an open end is known as a beverage container molded from a cylindrical container having a bottom. Such a beverage can is obtained by punching a metal plate such as aluminum into a circular shape, drawing it to obtain a cylindrical cup member with a bottom, and then re-drawing and ironing it to make the main body of the can. Is formed, and the can end is wound around the open end of the can body to be molded.

ここで、缶本体の開口端部に缶蓋を巻き締める場合、例えば特許文献1、2等に開示されているように、缶本体の開口端部に缶軸方向上側に向かうに従い漸次縮径するネッキング部が形成されており、このネッキング部に缶胴部よりも径の小さな缶蓋が巻き締められている。
例えば、市場で主に流通している飲料缶においては、公称容量が350mL、500mLの場合には、缶胴部の外径が約66mm、缶蓋径が約57mmとされており、公称容量が190mL、250mLの場合には、缶胴部の外径が約53mm、缶蓋径が約50mmとされている。
Here, when the can lid is tightened around the opening end of the can body, the diameter is gradually reduced toward the opening axial direction at the opening end of the can body as disclosed in, for example, Patent Documents 1 and 2. A necking portion is formed, and a can lid having a diameter smaller than that of the can body portion is wound around the necking portion.
For example, in beverage cans that are mainly distributed in the market, when the nominal capacity is 350 mL and 500 mL, the outer diameter of the can body is about 66 mm and the can lid diameter is about 57 mm, and the nominal capacity is In the case of 190 mL and 250 mL, the outer diameter of the can body portion is about 53 mm and the can lid diameter is about 50 mm.

特開2001−171639号公報JP 2001-171639 A 特開平04−087940号公報Japanese Patent Laid-Open No. 04-087940

ところで、公称容量が350mL、500mLの缶は、缶胴の外径が約66mmと径が大きいため、女性や子ども等の手が小さな人の場合、缶を把持しにくいといった問題があった。
一方、公称容量が190mL、250mLの缶は、缶胴の外径が約53mmと比較的小径のため、手が小さな人でも把持しやすいといった利点はあるが、缶胴部の外径と缶蓋径との差が小さいため、飲むときに唇が缶の表面にフィットしにくく内容物を飲みにくいといった問題があった。また、缶胴の外径が小さく、容量を確保できないといった問題があった。
By the way, since the cans having the nominal capacities of 350 mL and 500 mL have a large outer diameter of the can body of about 66 mm, there is a problem that it is difficult for a small hand such as a woman or a child to grip the can.
On the other hand, cans with a nominal capacity of 190 mL and 250 mL have an advantage that the outside diameter of the can barrel is about 53 mm, which is relatively small. Since the difference from the diameter is small, there was a problem that it was difficult for the lips to fit the surface of the can when drinking, and it was difficult to drink the contents. Further, there is a problem that the outer diameter of the can body is small and the capacity cannot be secured.

本発明は、前述の事情に鑑みてなされたものであって、女性や子ども等の手が小さな人であっても確実に把持することができるとともに、内容物を飲みやすい飲料缶を提供することを目的とする。   The present invention has been made in view of the above circumstances, and provides a beverage can that can be surely gripped by a person such as a woman or child with a small hand, and that can easily drink the contents. With the goal.

前述の課題を解決するために、本発明に係る飲料缶は、有底筒状をなす缶本体と、この缶本体の開口部に巻き締められ、飲み口予定部が設けられた缶蓋と、を備えた飲料缶であって、前記缶本体は、アルミニウム若しくはアルミニウム合金により形成され、前記缶本体は、缶軸に沿って延在する円筒状をなす缶胴部と、この缶胴部の缶軸方向下端側に設けられ、前記缶胴部と一体に成形された缶底部と、前記缶胴部の缶軸方向上端側に連接されるとともに缶軸方向上方に向かうに従い漸次縮径されるネッキング部と、を備えており、前記缶胴部の外径が55mm以上60mm以下の範囲とされ、前記缶蓋のシーミングパネルの上端から前記ネッキング部の下端までの缶軸方向高さが9mm以上20mm以下の範囲内とされ、前記缶胴部の外径と前記ネッキング部の最小外径との差が6mm以上8mm以下の範囲内とされ、前記缶本体の缶軸方向高さが120mm以上190mm以下の範囲内とされ、前記ネッキング部は、前記ネッキング部の下端部に位置する肩部と、前記ネッキング部の上端部に位置する首部と、前記肩部と前記首部との間に位置し、缶軸方向上方に向かうに従い漸次縮径されるテーパ部と、を有し、前記缶本体の缶軸方向に沿う縦断面視において、前記肩部は、缶軸方向に直交する径方向のうち、径方向外側へ向けて突出する凸曲線状をなしており、前記首部は、前記径方向のうち、径方向内側へ向けて窪む凹曲線状をなしており、前記缶本体の前記開口部のうち、缶軸方向において前記シーミングパネルと前記首部との間に位置する部分は、缶軸方向に沿って延び、前記テーパ部の延長線と、缶軸とが交差して形成される鋭角及び鈍角のうち、前記鋭角の角度が、27〜30°であることを特徴としている。 In order to solve the above-mentioned problems, the beverage can according to the present invention has a can body having a bottomed tubular shape, and a can lid that is wound around the opening of the can body and has a planned drinking mouth. A beverage can comprising: a can main body made of aluminum or an aluminum alloy; the can main body having a cylindrical can body extending along a can axis; and a can of the can body. A necking, which is provided on the lower end side in the axial direction and is integrally formed with the can body portion, is connected to the upper end side in the can axial direction of the can body portion, and the diameter is gradually reduced as it goes upward in the can axial direction. The outer diameter of the can body is in the range of 55 mm or more and 60 mm or less, and the can axial height from the upper end of the seaming panel of the can lid to the lower end of the necking part is 9 mm or more. Within a range of 20 mm or less, the difference between the outer diameter of the can body portion and the minimum outer diameter of the necking portion is within a range of 6 mm or more and 8 mm or less, and the can body axial height is 120 mm or more and 190 mm. Within the following range, the necking portion is located between the shoulder portion located at the lower end portion of the necking portion, the neck portion located at the upper end portion of the necking portion, and between the shoulder portion and the neck portion, possess a tapered portion which gradually be reduced in diameter toward the canister axis upward, and the longitudinal cross section along the can axis of the can body, the shoulder portion, of the radial direction perpendicular to the can axis, It has a convex curved shape that protrudes outward in the radial direction, and the neck portion has a concave curved shape that is recessed inward in the radial direction in the radial direction. Of these, a portion located between the seaming panel and the neck portion in the can axis direction extends along the can axis direction, and an extension angle of the tapered portion and an acute angle formed by the can axis intersecting each other and Among the obtuse angles, the acute angle is 27 to 30 ° .

この構成の飲料缶によれば、前記缶胴部の外径が55mm以上60mm以下の範囲内とされているので、女性や子ども等の手が小さな人であっても、缶胴部を確実に把持することができる。また、前記缶胴部の外径が55mm以上とされているので、容量を確保することができる。
さらに、前記缶蓋のシーミングパネルの上端から前記ネッキング部の下端までの缶軸方向高さが9mm以上とされるとともに前記缶胴部の外径と前記ネッキング部の最小外径との差が6mm以上とされているので、飲む時に唇が缶の表面にフィットして、内容物が飲みやすくなる。
また、前記缶蓋のシーミングパネルの上端から前記ネッキング部の下端までの缶軸方向高さが20mm以下とされるとともに前記缶胴部の外径と前記ネッキング部の最小外径との差が8mm以下とされているので、コラム強度が確保され、缶成形時や缶蓋の巻締め時に座屈が生じることを抑制できる。さらに、ネッキング部の縮径が比較的緩やかなことから、内容物の流動がスムーズとなり、内容物が飲みやすくなる。
According to the beverage can having this structure, the outer diameter of the can body portion is within the range of 55 mm or more and 60 mm or less, so that the can body portion can be securely held even by a person with a small hand such as a woman or a child. Can be grasped. Further, since the outer diameter of the can body portion is 55 mm or more, the capacity can be secured.
Further, the can axial height from the upper end of the seaming panel of the can lid to the lower end of the necking portion is 9 mm or more, and the difference between the outer diameter of the can body portion and the minimum outer diameter of the necking portion is Since it is 6 mm or more, the lips fit the surface of the can during drinking, making it easier to drink the contents.
Further, the height of the can lid in the axial direction from the upper end of the seaming panel of the can lid to the lower end of the necking portion is 20 mm or less, and the difference between the outer diameter of the can body portion and the minimum outer diameter of the necking portion. Since the length is 8 mm or less, column strength is secured, and buckling can be suppressed during can forming and winding of the can lid. Further, since the necking portion has a relatively gentle diameter reduction, the contents flow smoothly and the contents become easy to drink.

ここで、本発明の飲料缶においては、前記缶本体の缶軸方向高さが120mm以上190mm以下の範囲内とされている。
この場合、前記缶本体の缶軸方向高さが120mm以上とされているので、缶胴部の外径が55mm以上60mm以下の範囲内であっても、容量を十分に確保することができ、例えば公称容量250mLより容量の多い飲料缶として適用することが可能となる。また、前記缶本体の缶軸方向高さが190mm以下とされているので、運搬時等に倒缶することを抑制でき、取扱いが容易となる。
Here, in the beverage can of the present invention, the can-axis direction height of the can body that is in the range of 120mm or more 190mm or less.
In this case, since the height of the can body in the can axis direction is 120 mm or more, it is possible to sufficiently secure the capacity even when the outer diameter of the can body is 55 mm or more and 60 mm or less. For example, it can be applied as a beverage can having a capacity larger than the nominal capacity of 250 mL. Further, since the height of the can body in the can axis direction is 190 mm or less, it is possible to prevent the can from falling during transportation and the like, and the handling becomes easy.

本発明によれば、女性や子ども等の手が小さな人であっても確実に把持することができるとともに、内容物を飲みやすい飲料缶を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, even if a person's hands, such as a woman and a child, are small, it can hold | grip reliably and can provide the drink can which is easy to drink the content.

本発明の一実施形態である飲料缶の概略説明図である。It is a schematic explanatory drawing of the drink can which is one Embodiment of this invention. 図1に示す飲料缶の巻き締め部の拡大説明図である。FIG. 2 is an enlarged explanatory diagram of a winding tightening portion of the beverage can shown in FIG. 1. 缶蓋を巻き締める前の缶本体の概略説明図である。It is a schematic explanatory drawing of the can main body before winding up a can lid. 缶本体に巻き締める前の缶蓋の概略説明図である。It is a schematic explanatory drawing of the can lid before winding and tightening on the can main body. 缶本体の製造工程を説明する概略図である。It is the schematic explaining the manufacturing process of a can main body. 図3のネッキング部及びフランジ部近傍を拡大して示す図である。It is a figure which expands and shows the necking part and flange vicinity of FIG.

以下に、本発明の実施の形態について添付した図面を参照して説明する。
本実施形態である飲料缶10は、図1に示すように、有底筒状をなす缶本体20と、この缶本体20の開口部に巻き締められた缶蓋30と、を備えた巻締缶とされている。なお、本実施形態である飲料缶10は、公称容量が260mL以上440mL以下の範囲内とされている。
Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1, a beverage can 10 according to the present embodiment includes a can body 20 having a bottomed tubular shape, and a can lid 30 wound around an opening of the can body 20. It is said to be a can. The beverage can 10 according to the present embodiment has a nominal capacity within a range of 260 mL or more and 440 mL or less.

缶本体20は、例えばアルミニウム若しくはアルミニウム合金により形成されており、大径の缶胴部21と、この缶胴部21の缶軸方向下端側に設けられた缶底部22と、前記缶胴部21の缶軸方向上端側に連接されるとともに缶軸方向上方に向かうに従い漸次縮径されるネッキング部23と、を備えている。
そして、缶本体20の開口部に設けられたネッキング部23に、缶胴部21よりも径の小さな缶蓋30が巻き締められている。
The can body 20 is made of, for example, aluminum or an aluminum alloy, and has a large-diameter can body portion 21, a can bottom portion 22 provided at the lower end side of the can body portion 21 in the can axial direction, and the can body portion 21. And a necking portion 23 that is connected to the upper end side in the can axis direction and gradually reduces in diameter as it goes upward in the can axis direction.
A can lid 30 having a diameter smaller than that of the can body portion 21 is wound around the necking portion 23 provided in the opening of the can body 20.

ここで、缶蓋30を巻き締める前の缶本体20を図3に示す。この缶本体20は、アルミニウム若しくはアルミニウム合金からなるアルミニウム板を円形状に打ち抜き、それを絞り加工して有底円筒状のカップ部材を得て、さらにそれを再絞り・しごき加工することによって成形されており、缶底部22と缶胴部21とが一体に成形されている。缶本体20の開口端部、すなわちネッキング部23の上端には、フランジ部24が形成されており、フランジ部24の上端からネッキング部23の下端までの缶軸方向高さhが9mm≦h≦20mmの範囲内とされている。 Here, the can main body 20 before winding the can lid 30 is shown in FIG. The can main body 20 is formed by punching an aluminum plate made of aluminum or an aluminum alloy into a circular shape, drawing it to obtain a cylindrical cup member having a bottom, and then redrawing and ironing the cup member. The can bottom portion 22 and the can body portion 21 are integrally formed. A flange portion 24 is formed at the opening end of the can body 20, that is, at the upper end of the necking portion 23, and the can axial height h 0 from the upper end of the flange portion 24 to the lower end of the necking portion 23 is 9 mm ≦ h. It is set within the range of 0 ≦ 20 mm.

また図6は、図3におけるネッキング部23及びフランジ部24近傍を拡大して示す図であり、缶本体20の上端部(開口部)の縦断面図(缶軸方向に沿う断面図)となっている。
この縦断面視において、ネッキング部23の下端部に位置する肩部23aは、缶軸方向に直交する径方向のうち、径方向外側へ向けて突出する凸曲線状をなしており、該肩部23aの曲率半径R1(肩部23aの外面で測定した値)は、例えば4〜8mmである。
なお、特に図示していないが、本実施形態の例では、肩部23aを成形する金型の凹部の曲率半径が10mmであり、これにより成形された肩部23aの曲率半径R1が、実測値で6.1mmであった。
6 is an enlarged view showing the vicinity of the necking portion 23 and the flange portion 24 in FIG. 3, and is a vertical cross-sectional view (cross-sectional view along the can axis direction) of the upper end portion (opening portion) of the can main body 20. ing.
In this longitudinal cross-sectional view, the shoulder portion 23a located at the lower end portion of the necking portion 23 has a convex curve shape that protrudes outward in the radial direction in the radial direction orthogonal to the can axis direction. The radius of curvature R1 of 23a (the value measured on the outer surface of the shoulder 23a) is, for example, 4 to 8 mm.
Although not particularly shown, in the example of the present embodiment, the radius of curvature of the concave portion of the mold for molding the shoulder portion 23a is 10 mm, and the radius of curvature R1 of the shoulder portion 23a molded by this is an actually measured value. Was 6.1 mm.

また、この縦断面視において、ネッキング部23の上端部に位置する首部23bは、前記径方向のうち、径方向内側へ向けて窪む凹曲線状をなしており、該首部23bの曲率半径R2(首部23bの外面で測定した値)は、例えば6〜10mmである。
なお、特に図示していないが、本実施形態の例では、首部23bを成形する金型の凸部の曲率半径が5.6mmであり、これにより成形された首部23bの曲率半径R2が、実測値で8.1mmであった。
Further, in this longitudinal sectional view, the neck portion 23b located at the upper end portion of the necking portion 23 has a concave curved shape that is recessed inward in the radial direction in the radial direction, and the radius of curvature R2 of the neck portion 23b. (Value measured on the outer surface of the neck portion 23b) is, for example, 6 to 10 mm.
Although not particularly shown, in the example of the present embodiment, the radius of curvature of the convex portion of the mold for molding the neck portion 23b is 5.6 mm, and the radius of curvature R2 of the neck portion 23b molded by this is actually measured. The value was 8.1 mm.

また、この縦断面視において、ネッキング部23のうち肩部23aと首部23bの間に位置するテーパ部23cが、缶軸に対して傾斜する角度(傾斜角)θは、例えば27〜30°である。具体的に前記角度θとは、図6の縦断面視において、テーパ部23cの延長線と、缶軸(又は缶軸に平行な直線)とが交差して形成される鋭角及び鈍角のうち、鋭角の角度を指す。
なお、特に図示していないが、本実施形態の例では、テーパ部23cを成形する金型のテーパ部の傾斜角が30°であり、これにより成形されたテーパ部23cの角度θが、実測値で28°であった。
In this longitudinal sectional view, the taper portion 23c of the necking portion 23 located between the shoulder portion 23a and the neck portion 23b is inclined with respect to the can axis at an angle (inclination angle) θ of, for example, 27 to 30 °. is there. Specifically, the angle θ means, among the acute angle and the obtuse angle formed by the extension line of the tapered portion 23c and the can axis (or the straight line parallel to the can axis) intersecting each other in the longitudinal sectional view of FIG. Refers to an acute angle.
Although not particularly shown, in the example of the present embodiment, the inclination angle of the taper portion of the die for molding the taper portion 23c is 30 °, and the angle θ of the taper portion 23c formed by this is actually measured. The value was 28 °.

また、この縦断面視において、肩部23aの曲率半径R1中心と、首部23bの曲率半径R2中心と、の缶軸方向に沿う距離Lは、例えば9〜12mmである。
なお、特に図示していないが、本実施形態の例では、肩部23aを成形する金型の凹部の曲率半径中心と、首部23bを成形する金型の凸部の曲率半径中心と、の缶軸方向に沿う距離が、10.76mmである。
In this longitudinal sectional view, the distance L along the can axis direction between the center of curvature R1 of the shoulder 23a and the center of curvature R2 of the neck 23b is, for example, 9 to 12 mm.
Although not particularly shown, in the example of the present embodiment, the can of the radius of curvature of the concave portion of the mold for molding the shoulder portion 23a and the center of the radius of curvature of the convex portion of the mold for molding the neck portion 23b. The distance along the axial direction is 10.76 mm.

また、缶本体20に巻き締める前の缶蓋30を図4に示す。この缶蓋30は、円板状のセンターパネル31と、環状溝32と、チャックウォール33と、シーミングパネル34とを備えている。
センターパネル31には、飲み口を形成するためのスコア(飲み口予定部)36が設けられており、このスコア36を破断させる(飲み口を開口させる)ためのタブ37が、センターパネル31の中央に形成されたリベット38に取り付けられている。
FIG. 4 shows the can lid 30 before it is wound around the can body 20. The can lid 30 includes a disk-shaped center panel 31, an annular groove 32, a chuck wall 33, and a seaming panel 34.
The center panel 31 is provided with a score (scheduled drinking part) 36 for forming a drinking mouth, and a tab 37 for breaking the score 36 (opening the drinking mouth) is provided on the center panel 31. It is attached to a rivet 38 formed in the center.

缶蓋30のシーミングパネル34は缶本体20のフランジ部24に重なるように載置され、巻き締め装置によってシーミングパネル34とフランジ部24とを積層した状態で同時に曲げ加工することにより、図2に示すように、缶蓋30が缶本体20に巻き締められることになる。   The seaming panel 34 of the can lid 30 is placed so as to overlap the flange portion 24 of the can main body 20, and the seaming panel 34 and the flange portion 24 are simultaneously bent in a laminated state by a winding device, so that As shown in FIG. 2, the can lid 30 is wound around the can body 20.

そして、本実施形態である飲料缶10においては、図1に示すように、缶胴部21の外径Dが、55mm≦D≦60mmの範囲とされている。
また、缶胴部21の外径Dとネッキング部23の最小外径dとの差が、6mm≦D−d≦8mmの範囲内とされている。
Then, in the beverage can 10 of the present embodiment, as shown in FIG. 1, the outer diameter D of the can body portion 21 is in the range of 55 mm ≦ D ≦ 60 mm.
The difference between the outer diameter D of the can body portion 21 and the minimum outer diameter d of the necking portion 23 is within the range of 6 mm ≦ D−d ≦ 8 mm.

さらに、図1に示すように、缶蓋30のシーミングパネル34の上端から缶本体20のネッキング部23の下端までの缶軸方向高さhが、9mm≦h≦20mmの範囲内とされている。なお、缶蓋30を巻き締めた際には、缶本体20のフランジ部24が折り曲げられるために缶本体20自体の高さは低くなるが、缶本体20の上に缶蓋30が配置されることから、缶蓋30のシーミングパネル34の上端から缶本体20のネッキング部23の下端までの缶軸方向高さhは、上述した缶本体20のフランジ部24の上端からネッキング部23の下端までの缶軸方向高さhと略同一となる(図3及び図6を参照)。 Further, as shown in FIG. 1, the can axial height h from the upper end of the seaming panel 34 of the can lid 30 to the lower end of the necking portion 23 of the can main body 20 is within the range of 9 mm ≦ h ≦ 20 mm. There is. When the can lid 30 is tightened, the height of the can body 20 itself becomes low because the flange portion 24 of the can body 20 is bent, but the can lid 30 is arranged on the can body 20. Therefore, the can axial height h from the upper end of the seaming panel 34 of the can lid 30 to the lower end of the necking portion 23 of the can main body 20 is calculated from the upper end of the flange portion 24 of the can main body 20 to the lower end of the necking portion 23. It is almost the same as the can axis direction height h 0 up to (see FIGS. 3 and 6).

また、図1に示すように、缶本体20の缶軸方向高さHが、120mm≦H≦190mmの範囲内とされている。
さらに、本実施形態では、シーミング高さSが2.6mm≦S≦3.15mmの範囲内とされている。
Further, as shown in FIG. 1, the height H of the can body 20 in the can axis direction is in the range of 120 mm ≦ H ≦ 190 mm.
Further, in the present embodiment, the seaming height S is within the range of 2.6 mm ≦ S ≦ 3.15 mm.

次に、本実施形態である飲料缶10の製造方法について説明する。
まず、成形素材として、板厚が0.25〜0.30mmのアルミニウム若しくはアルミニウム合金からなるアルミニウム板を準備する。
図5(a)に示すように、このアルミニウム板に打ち抜き加工を施し、円板状の板材(ブランク)を得る。
Next, a method for manufacturing the beverage can 10 according to this embodiment will be described.
First, an aluminum plate having a plate thickness of 0.25 to 0.30 mm and made of aluminum or an aluminum alloy is prepared as a forming material.
As shown in FIG. 5A, this aluminum plate is punched to obtain a disc-shaped plate material (blank).

この円板状の板材に絞り加工を施して、図5(b)に示すようなカップ状缶体を形成する。
さらに、カップ状缶体に再絞り加工を施して、図5(c)に示すようなカップ状缶体とする。
次いで、しごき加工を施し、図5(d)に示すような有底筒状缶体(有底筒状体)を形成する。この有底筒状体の開口端部は、その缶軸方向に波打つような凹凸形状とされる。
そして、図5(d)に示す有底筒状体の開口端部を切断して、缶軸方向の高さをその全周に亙って均一とし、図5(e)に示す有底筒状体が成形される。
This disk-shaped plate material is subjected to a drawing process to form a cup-shaped can body as shown in FIG. 5 (b).
Further, the cup-shaped can body is redrawn to obtain a cup-shaped can body as shown in FIG.
Then, ironing is performed to form a bottomed cylindrical can body (bottomed cylindrical body) as shown in FIG. The open end of the bottomed tubular body has an uneven shape that undulates in the can axis direction.
Then, the open end of the bottomed tubular body shown in FIG. 5 (d) is cut to make the height in the axial direction of the can uniform over the entire circumference, and the bottomed tubular body shown in FIG. 5 (e) is obtained. A shaped body is formed.

ここで、本実施形態では、絞り加工における総絞り比Aを2.4以上としている。なお、総絞り比Aとは、カップ絞り比B(図5(a)〜(b)の工程)と、再絞り比C(図5(b)〜(c)の工程)を掛け合わせた値であり、次式(1)〜(3)で表される。
カップ絞り比B=ブランク径D1/カップ径D2・・・(1)
再絞り比C=カップ径D2/胴部径D3・・・(2)
総絞り比A=カップ絞り比B×再絞り比C=ブランク径D1/胴部径D3・・・(3)
Here, in this embodiment, the total drawing ratio A in drawing is set to 2.4 or more. The total drawing ratio A is a value obtained by multiplying the cup drawing ratio B (steps of FIGS. 5A to 5B) and the redrawing ratio C (steps of FIGS. 5B to 5C). And is represented by the following equations (1) to (3).
Cup draw ratio B = blank diameter D1 / cup diameter D2 (1)
Redraw ratio C = cup diameter D2 / body diameter D3 (2)
Total draw ratio A = Cup draw ratio B × Redraw ratio C = Blank diameter D1 / Drum body diameter D3 (3)

上述のように、缶底部22及び缶胴部21を成形した後、ネッキング加工を行ってネッキング部23を成形し、フランジ加工によってネッキング部23の開口端にフランジ部24を成形する。これにより、図3及び図6に示す缶本体20が製造される。   As described above, after forming the can bottom portion 22 and the can body portion 21, necking processing is performed to form the necking portion 23, and the flange portion 24 is formed at the open end of the necking portion 23 by flange processing. As a result, the can body 20 shown in FIGS. 3 and 6 is manufactured.

こうして製造された缶本体20には、その表面に塗装等の表面処理が施された後、缶本体20内部に内容物が充填される。その後、缶本体20の開口端に缶蓋30が巻き締められ、本実施形態である飲料缶10が製造されることになる。   The surface of the can body 20 manufactured in this manner is subjected to a surface treatment such as painting, and then the inside of the can body 20 is filled with contents. After that, the can lid 30 is wound around the open end of the can body 20, and the beverage can 10 according to the present embodiment is manufactured.

以上のような構成とされた本実施形態である飲料缶10によれば、缶胴部21の外径Dが55mm≦D≦60mmの範囲内とされているので、女性や子ども等の手が小さな人であっても、缶胴部21を確実に把持することができる。
また、缶蓋30のシーミングパネル34の上端からネッキング部23の下端までの缶軸方向高さhが9mm以上とされ、缶胴部21の外径Dとネッキング部23の最小外径dとの差が6mm以上とされているので、飲むときに唇が飲料缶10の表面にフィットしやすく、内部に充填された飲料が飲みやすくなる。
さらに、缶蓋30のシーミングパネル34の上端からネッキング部23の下端までの缶軸方向高さhが20mm以下とされ、缶胴部21の外径Dとネッキング部23の最小外径dとの差が8mm以下とされているので、ネッキング部23自体の強度が確保され、缶成形時や缶蓋30の巻締め時に座屈が生じることを抑制でき、飲料缶10を効率良く製造することが可能となる。
According to the beverage can 10 of the present embodiment configured as described above, since the outer diameter D of the can body portion 21 is within the range of 55 mm ≦ D ≦ 60 mm, the hands of women, children, etc. Even a small person can reliably grip the can body portion 21.
Further, the height h of the can lid 30 in the axial direction from the upper end of the seaming panel 34 of the can lid 30 to the lower end of the necking portion 23 is 9 mm or more, and the outer diameter D of the can body portion 21 and the minimum outer diameter d of the necking portion 23 are Since the difference is 6 mm or more, the lips easily fit the surface of the beverage can 10 when drinking, and the beverage filled inside becomes easy to drink.
Further, the can axial height h from the upper end of the seaming panel 34 of the can lid 30 to the lower end of the necking part 23 is 20 mm or less, and the outer diameter D of the can body 21 and the minimum outer diameter d of the necking part 23 are Is 8 mm or less, the strength of the necking portion 23 itself is secured, buckling can be suppressed during can forming and winding of the can lid 30, and the beverage can 10 can be manufactured efficiently. Is possible.

なお、外径D、缶軸方向高さh、及び差D−dが上述の範囲内であると、本実施形態で説明したようにネッキング部23において、曲率半径R1を4〜8mm、曲率半径R2を6〜10mm、角度θを27〜30°、距離Lを9〜12mmとすることが容易であり、上述した作用効果がより格別顕著なものとなる。
すなわちこの場合、ネッキング部23に対して、唇がよりフィットしやすくなる。また、ネッキング部23の縮径(傾斜)が比較的緩やかなことから、内容物の流動がスムーズとなり、内容物が飲みやすくなる。
When the outer diameter D, the height h in the can axis direction, and the difference D-d are within the ranges described above, the radius of curvature R1 is 4 to 8 mm and the radius of curvature is 4 mm in the necking portion 23 as described in the present embodiment. It is easy to set R2 to be 6 to 10 mm, the angle θ to be 27 to 30 °, and the distance L to be 9 to 12 mm, and the above-described action and effect will be more remarkable.
That is, in this case, the lips are more easily fitted to the necking portion 23. Further, since the necking portion 23 has a relatively gentle diameter reduction (inclination), the contents flow smoothly and the contents are easy to drink.

さらに、本実施形態では、缶本体20の缶軸方向高さHが120mm以上とされているので、缶胴部21の外径Dが55mm≦D≦60mmと比較的小径であっても、容量を十分に確保することができ、例えば公称容量250mLより多い容量の飲料缶10として適用することが可能となる。また、缶本体20の缶軸方向高さHが190mm以下とされているので、運搬時等における倒缶を抑制することができ、飲料缶10の取扱いが容易となる。   Further, in this embodiment, the height H of the can body 20 in the axial direction of the can is set to 120 mm or more. Therefore, even if the outer diameter D of the can body portion 21 is 55 mm ≦ D ≦ 60 mm, which is a relatively small diameter, the capacity is small. Can be sufficiently secured, and for example, it can be applied as the beverage can 10 having a capacity larger than the nominal capacity of 250 mL. Further, since the height H of the can body 20 in the can axis direction is 190 mm or less, it is possible to prevent the can from being inverted during transportation and the like, and the beverage can 10 is easily handled.

また、本実施形態では、缶蓋30のシーミングパネル34の上端からネッキング部23の下端までの缶軸方向高さhを9mm以上とするとともに、缶胴部21の外径Dとネッキング部23の最小外径dとの差が8mm以下とされているので、缶本体20を成形する絞り加工における総絞り比が2.4以上とされ、缶本体20の開口部が加工硬化していた場合であっても、ネッキング加工やフランジ加工における割れ等の発生を抑制することができる。
さらに、ネッキング部23が比較的緩やかに縮径していることから、内部に充填された飲料がネッキング部23の周縁部に滞留することなく、スムーズに流れることになる。
Further, in the present embodiment, the can axial height h from the upper end of the seaming panel 34 of the can lid 30 to the lower end of the necking part 23 is set to 9 mm or more, and the outer diameter D of the can body part 21 and the necking part 23 are set. Since the difference from the minimum outer diameter d of is 8 mm or less, the total drawing ratio in the drawing process for forming the can body 20 is 2.4 or more, and the opening of the can body 20 is work hardened. Even in this case, it is possible to suppress the occurrence of cracks and the like during necking and flanging.
Further, since the necking portion 23 is relatively gently reduced in diameter, the beverage filled inside does not stay in the peripheral portion of the necking portion 23 and flows smoothly.

さらに、本実施形態においては、シーミング高さSが、2.60mm≦S≦3.15mmの範囲内と比較的大きくされているので、飲用を中断して唇を飲料缶から離した際に充填された飲料が垂れることを抑制できる。   Further, in the present embodiment, the seaming height S is set relatively large within the range of 2.60 mm ≦ S ≦ 3.15 mm, so that the filling is performed when drinking is interrupted and the lips are separated from the beverage can. The dripped beverage can be suppressed from dripping.

以上、本発明の実施形態について説明したが、本発明はこれに限定されることはなく、その発明の技術的思想を逸脱しない範囲で適宜変更可能である。   Although the embodiment of the present invention has been described above, the present invention is not limited to this, and can be appropriately modified without departing from the technical idea of the invention.

以下に、本発明の効果を確認すべく行った確認実験の結果について説明する。   The results of confirmation experiments conducted to confirm the effects of the present invention will be described below.

(実施例1)
公称容量を350mL、缶蓋の外径を57.2mmに固定とし、缶胴部の外径Dを66mm、62mm、58mmの3種類の飲料缶を成形した。
50人のパネラーによって、この3種類の飲料缶のうち最も把持し易いものを選択させた。評価結果を表1に示す。
(Example 1)
The nominal capacity was 350 mL, the outer diameter of the can lid was fixed to 57.2 mm, and three types of beverage cans having the outer diameter D of the can body portion of 66 mm, 62 mm, and 58 mm were molded.
Fifty panelists selected the three types of beverage cans that were the easiest to grip. The evaluation results are shown in Table 1.

Figure 0006696730
Figure 0006696730

缶胴部の外径Dが66mmの飲料缶は、市場に広く流通しているものであり、特に男性の評価が高かった。
缶胴部の外径Dが62mmの飲料缶は、どの年代、性別でも評価が低かった。
缶胴部の外径Dが58mmの飲料缶は、最も高い評価を得た。特に女性の評価が高かった。
Beverage cans having an outer diameter D of the can body of 66 mm are widely distributed in the market, and were particularly highly evaluated by men.
Beverage cans having an outer diameter D of the can body of 62 mm were evaluated low in any age and sex.
The beverage can having an outer diameter D of the body of the can of 58 mm received the highest evaluation. Especially women were highly evaluated.

(実施例2)
上記の実施例1において最も評価が高かったことから、缶胴部の外径を58mmとし、外径が50.8mm、54mmの缶蓋を用いて、公称容量350mLの2種類の飲料缶を成形した。なお、飲料として炭酸飲料を充填した。
50人のパネラーによって、この2種類の飲料缶のうち最も飲み易いものを選択させた。評価結果を表2に示す。
(Example 2)
Since the highest evaluation was obtained in Example 1 above, two types of beverage cans having a nominal capacity of 350 mL were formed using a can lid having an outer diameter of the can body portion of 58 mm and outer diameters of 50.8 mm and 54 mm. did. A carbonated drink was filled as a drink.
Fifty panelists selected the two types of beverage cans that were the easiest to drink. The evaluation results are shown in Table 2.

なお、外径が50.8mmの缶蓋を用いた飲料缶は、缶蓋のシーミングパネルの上端からネッキング部の下端までの缶軸方向高さhが13mm、缶胴部の外径Dとネッキング部の最小外径dとの差D−dが8mmとなり、本発明例の飲料缶となる。
また、外径が54mmの缶蓋を用いた場合、缶蓋のシーミングパネルの上端からネッキング部の下端までの缶軸方向高さhが8.5mm、缶胴部の外径Dとネッキング部の最小外径dとの差D−dが5.5mmとなり、比較例の飲料缶となる。
In addition, a beverage can using a can lid having an outer diameter of 50.8 mm has a can axial height h from the upper end of the seaming panel of the can lid to the lower end of the necking portion is 13 mm, and the outer diameter D of the can body is The difference Dd from the minimum outer diameter d of the necking portion is 8 mm, and the beverage can of the present invention is obtained.
When a can lid having an outer diameter of 54 mm is used, the can axial height h from the upper end of the seaming panel of the can lid to the lower end of the necking portion is 8.5 mm, and the outer diameter D of the can body portion and the necking portion are The difference D-d from the minimum outer diameter d of 5.5 mm is 5.5 mm, and the beverage can of Comparative Example is obtained.

Figure 0006696730
Figure 0006696730

外径が50.8mmの缶蓋を用いた飲料缶(缶蓋のシーミングパネルの上端からネッキング部の下端までの缶軸方向高さhが13mm、缶胴部の外径Dとネッキング部の最小外径dとの差D−dが8mm)の評価が高かった。飲み口近傍に唇が安定して接触したことが要因と推測される。
外径が54mmの缶蓋を用いた飲料缶(缶蓋のシーミングパネルの上端からネッキング部の下端までの缶軸方向高さhが8.5mm、缶胴部の外径Dとネッキング部の最小外径dとの差D−dが5.5mm)においては、唇が缶胴部とネッキング部との境界部分に接触し、飲み難さを感じたため評価が低かったものと推測される。
特に、炭酸飲料の場合、唇を缶から離間させて注ぎ込むように飲むことが困難であるため、唇を缶に接触させた状態で飲むことから、上述のように、外径が50.8mmの缶蓋を用いた飲料缶の評価が高くなったと推測される。
Beverage cans using a can lid having an outer diameter of 50.8 mm (the can axial height h from the upper end of the seaming panel of the can lid to the lower end of the necking portion is 13 mm, the outer diameter D of the can body portion and the necking portion). The evaluation that the difference D-d from the minimum outer diameter d was 8 mm) was high. It is presumed that the stable contact of the lips with the mouth was the cause.
Beverage cans using a can lid having an outer diameter of 54 mm (the can axial height h from the upper end of the seaming panel of the can lid to the lower end of the necking portion is 8.5 mm, the outer diameter D of the can body portion and the necking portion). When the difference D-d from the minimum outer diameter d is 5.5 mm), it is presumed that the evaluation was low because the lips touched the boundary between the can body and the necking part and felt difficult to drink.
In particular, in the case of carbonated drinks, it is difficult to drink by pouring the lips away from the can. Therefore, since the lips are drunk with the lips in contact with the can, as described above, the outer diameter is 50.8 mm. It is speculated that the beverage cans using the can lids were highly evaluated.

以上の確認実験の結果から、本発明によれば、女性や子ども等の手が小さな人であっても確実に把持することができるとともに、内容物を飲みやすい飲料缶を提供できることが確認された。   From the results of the above confirmation experiment, according to the present invention, it was confirmed that even a small person such as a woman or a child can surely grasp and can provide a beverage can that is easy to drink the contents. .

10 飲料缶
20 缶本体
21 缶胴部
22 缶底部
23 ネッキング部
30 缶蓋
34 シーミングパネル
36 スコア(飲み口予定部)
10 Beverage Can 20 Can Main Body 21 Can Body 22 Can Bottom 23 Necking Part 30 Can Lid 34 Seaming Panel 36 Score (Planned Drinking Port)

Claims (1)

有底筒状をなす缶本体と、この缶本体の開口部に巻き締められ、飲み口予定部が設けられた缶蓋と、を備えた飲料缶であって、
前記缶本体は、アルミニウム若しくはアルミニウム合金により形成され、
前記缶本体は、缶軸に沿って延在する円筒状をなす缶胴部と、この缶胴部の缶軸方向下端側に設けられ、前記缶胴部と一体に成形された缶底部と、前記缶胴部の缶軸方向上端側に連接されるとともに缶軸方向上方に向かうに従い漸次縮径されるネッキング部と、を備えており、
前記缶胴部の外径が55mm以上60mm以下の範囲とされ、
前記缶蓋のシーミングパネルの上端から前記ネッキング部の下端までの缶軸方向高さが9mm以上20mm以下の範囲内とされ、
前記缶胴部の外径と前記ネッキング部の最小外径との差が6mm以上8mm以下の範囲内とされ、
前記缶本体の缶軸方向高さが120mm以上190mm以下の範囲内とされ、
前記ネッキング部は、
前記ネッキング部の下端部に位置する肩部と、
前記ネッキング部の上端部に位置する首部と、
前記肩部と前記首部との間に位置し、缶軸方向上方に向かうに従い漸次縮径されるテーパ部と、を有し、
前記缶本体の缶軸方向に沿う縦断面視において、
前記肩部は、缶軸方向に直交する径方向のうち、径方向外側へ向けて突出する凸曲線状をなしており、
前記首部は、前記径方向のうち、径方向内側へ向けて窪む凹曲線状をなしており、
前記缶本体の前記開口部のうち、缶軸方向において前記シーミングパネルと前記首部との間に位置する部分は、缶軸方向に沿って延び、
前記テーパ部の延長線と、缶軸とが交差して形成される鋭角及び鈍角のうち、前記鋭角の角度が、27〜30°であることを特徴とする飲料缶。
A beverage can comprising a can body having a bottomed tubular shape, and a can lid wound around an opening of the can body and provided with a planned mouth portion,
The can body is made of aluminum or an aluminum alloy,
The can body is a can body portion having a cylindrical shape extending along the can axis, and a can bottom portion provided on the lower end side in the can axis direction of the can body portion, and a can bottom portion integrally formed with the can body portion, A necking portion connected to the upper end side of the can body in the can axis direction and gradually reduced in diameter as it goes upward in the can axis direction, and
The outer diameter of the can body is in the range of 55 mm or more and 60 mm or less,
The can axial height from the upper end of the seaming panel of the can lid to the lower end of the necking portion is in the range of 9 mm or more and 20 mm or less,
The difference between the outer diameter of the can body portion and the minimum outer diameter of the necking portion is within a range of 6 mm or more and 8 mm or less,
The height of the can body in the can axis direction is in the range of 120 mm or more and 190 mm or less,
The necking portion is
A shoulder portion located at the lower end of the necking portion,
A neck located at the upper end of the necking portion,
Located between the neck portion and the shoulder portion, it has a, a tapered portion which gradually be reduced in diameter toward the canister axis upward,
In a longitudinal sectional view along the can axis direction of the can body,
The shoulder portion, in the radial direction orthogonal to the can axis direction, has a convex curved shape that projects outward in the radial direction,
The neck portion has a concave curved shape that is recessed inward in the radial direction in the radial direction,
Of the opening of the can body, a portion located between the seaming panel and the neck portion in the can axis direction extends along the can axis direction,
The acute can angle and the obtuse angle formed by the extension line of the taper portion and the can axis intersecting, the acute angle is 27 to 30 ° .
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JP7328847B2 (en) * 2019-09-19 2023-08-17 アルテミラ製缶株式会社 Can bodies and product cans

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
JPS61232149A (en) * 1985-03-29 1986-10-16 北海製罐株式会社 Welded beverage can body
JPH0444944A (en) * 1990-06-04 1992-02-14 Hokkai Can Co Ltd Neck-in can body
JPH0919732A (en) * 1995-07-06 1997-01-21 Kobe Steel Ltd Metal can necking-in tool
JPH10216871A (en) * 1997-01-30 1998-08-18 Kishimoto Akira Highly heat resistant deep drawn vessel
JP2009001858A (en) * 2007-06-21 2009-01-08 Mitsubishi Alum Co Ltd Aluminum alloy sheet for can body having excellent circulation pinhole resistance
CN202063307U (en) 2011-04-18 2011-12-07 太平洋制罐(北京)有限公司 Aluminum two-piece pop can
US20140061212A1 (en) * 2012-08-29 2014-03-06 Ball Corporation Contoured Neck for a Beverage Container
CA2890017C (en) 2012-11-05 2017-04-25 Ball Corporation Contoured neck for a beverage container

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