JP2002256366A - Aluminum sheet for bottle - Google Patents
Aluminum sheet for bottleInfo
- Publication number
- JP2002256366A JP2002256366A JP2001052234A JP2001052234A JP2002256366A JP 2002256366 A JP2002256366 A JP 2002256366A JP 2001052234 A JP2001052234 A JP 2001052234A JP 2001052234 A JP2001052234 A JP 2001052234A JP 2002256366 A JP2002256366 A JP 2002256366A
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- Japan
- Prior art keywords
- bottle
- aluminum plate
- diameter
- present
- mass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Rigid Containers With Two Or More Constituent Elements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、絞り加工としごき
加工が施されて形成されるボトル形状の１ピースアルミ
ニウム缶用のアルミニウム板に関し、特に、缶の胴体部
に対する口部の絞り比が大きく且つ口部の直径が小さい
ボトル缶に好適なアルミニウム板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottle-shaped aluminum plate for a one-piece aluminum can which is formed by drawing and ironing, and in particular, the drawing ratio of the mouth to the body of the can is large. The present invention also relates to an aluminum plate suitable for a bottle can having a small mouth diameter.
【０００２】[0002]
【従来の技術】胴体部とエンド部とタブとを備えてなる
従来の２ピース構造のアルミニウム缶においては、所定
のアルミニウム板にカッピングおよびＤＩ成形（絞り加
工、しごき加工）等の缶体成形を施して胴体部を形成し
た後、この胴体部にネック加工を施して胴体部の径に比
べてエンド部の径を小さくしたもの（以下、「２ピース
アルミ缶」という。）が主流となっている。このような
２ピースアルミ缶では、胴体部の径に対するエンド部の
径の絞り比が比較的小さいため、ネック加工が比較的容
易であった。2. Description of the Related Art In a conventional two-piece aluminum can having a body part, an end part and a tab, a can body such as cupping and DI molding (drawing and ironing) is formed on a predetermined aluminum plate. After forming the body portion by applying the same, a neck processing is performed on the body portion to make the diameter of the end portion smaller than the diameter of the body portion (hereinafter, referred to as “two-piece aluminum can”). I have. In such a two-piece aluminum can, necking was relatively easy because the drawing ratio of the diameter of the end portion to the diameter of the body portion was relatively small.
【０００３】一方、近年、胴体部と口部とスクリューキ
ャップを備えてなるボトル形状のアルミニウム缶（以
下、「ボトル缶」という。）のニーズが高まり、種々の
形態を有するものが開発されてきている。このようなボ
トル缶においては、胴体部の直径に対する口部の直径の
絞り比が前記２ピースアルミ缶に比べて大きいため、ネ
ック加工の際にしわ（皺）や割れがより生じ易くなる。On the other hand, in recent years, there has been an increasing need for a bottle-shaped aluminum can (hereinafter, referred to as a "bottle can") having a body, a mouth, and a screw cap, and those having various forms have been developed. I have. In such a bottle can, since the drawing ratio of the diameter of the mouth portion to the diameter of the body portion is larger than that of the two-piece aluminum can, wrinkles (wrinkles) and cracks are more likely to occur during neck processing.
【０００４】このようなボトル缶として、主に、胴体部
と底部とが各々異なる部材で形成されてなる２ピース構
造のボトル缶（スクリューキャップを含まない。以下、
「２ピースボトル缶」という。）と、胴体部と底部とが
一体に形成されてなる１ピース構造のボトル缶（スクリ
ューキャップを含まない。以下、「１ピースボトル缶」
という。）とが挙げられる。このうち２ピースボトル缶
は、一般に、前記従来の２ピースアルミ缶の製造方法の
一部を適用して製造されている。図３（ａ）に、前記従
来の２ピースボトル缶の製造工程の要部を概略的に示
す。As such a bottle can, a two-piece structure bottle can (mainly excluding a screw cap) in which a body portion and a bottom portion are formed of different members, respectively, is not included.
It is called a "two-piece bottle can." ) And a one-piece bottle can (not including a screw cap) in which a body and a bottom are integrally formed.
That. ). Of these, two-piece bottle cans are generally manufactured by applying a part of the conventional method for manufacturing a two-piece aluminum can. FIG. 3A schematically shows a main part of a manufacturing process of the conventional two-piece bottle can.
【０００５】すなわち、図３（ａ）、（ｂ）に示すよう
に、従来の２ピースボトル缶１０は、まず所定のアルミ
ニウム板ＡにカッピングおよびＤＩ成形、トリミング、
洗浄（図示省略）、印刷（図示省略）、ベーキング（最
高保持温度：２００〜２３０℃、図示省略）、ネッキン
グ（ネック加工）が順次に施されて、胴体部２０の所定
部分にネック部３０が形成され、次にネック部３０のエ
ンド部が開口されて口部４０が設けられるとともにこの
口部４０の近傍の外周にはスクリューキャップ取り付け
用のネジ切り加工が施されてネジ部５０が形成され、そ
の後口部４０と対向する胴体部２０の一方の開口部を底
部として形成するべく、この開口部にフランジ加工が施
された後、底部材を巻締めして底部６０を形成して製造
されている。That is, as shown in FIGS. 3 (a) and 3 (b), a conventional two-piece bottle can 10 is prepared by first cupping and DI forming, trimming, and cutting on a predetermined aluminum plate A.
Cleaning (not shown), printing (not shown), baking (maximum holding temperature: 200 to 230 ° C., not shown), and necking (neck processing) are sequentially performed, and a neck portion 30 is provided at a predetermined portion of the body portion 20. Then, the end portion of the neck portion 30 is opened to provide a mouth portion 40, and the outer periphery near the mouth portion 40 is subjected to a thread cutting process for attaching a screw cap to form a thread portion 50. After that, in order to form one opening portion of the body portion 20 facing the mouth portion 40 as a bottom portion, the opening portion is subjected to flange processing, and then the bottom member is tightened to form the bottom portion 60. ing.
【０００６】図３（ｂ）は、図３（ａ）に示すような工
程で製作された２ピースボトル缶を模式的に示す斜視図
である。図３（ｂ）に示すように、従来の２ピースボト
ル缶１０では、ネック加工の際にＤＩ成形後の缶の底部
にネック部３０が形成されるため、胴体部２０の直径Ｄ
10に対するネック部３０の直径Ｄ20の絞り比が大きなも
のでも比較的容易に形成することが可能である。すなわ
ち、このような従来の２ピースボトル缶においては、胴
体部２０に対するネック部３０の絞り比Ｒ2（％）を、
Ｒ2＝｛（Ｄ10―Ｄ20）／Ｄ10｝×１００で表すとき、
この絞り比Ｒ2が３０％以上である、絞り比が大きなボ
トル缶でも比較的容易に形成することが可能である。FIG. 3 (b) is a perspective view schematically showing a two-piece bottle can manufactured by the process shown in FIG. 3 (a). As shown in FIG. 3B, in the conventional two-piece bottle can 10, the neck portion 30 is formed at the bottom of the can after DI molding at the time of neck processing.
An aperture ratio of the diameter D 20 of the neck portion 30 for 10 large also can be relatively easily formed. That is, in such a conventional two-piece bottle can, the drawing ratio R 2 (%) of the neck portion 30 to the body portion 20 is
R 2 = {(D 10 -D 20 ) / D 10 } × 100,
The drawing ratio R 2 is 30% or more, it is possible to stop ratio is relatively easily formed in a large bottle can.
【０００７】一方、ボトル缶の製造コスト削減、リサイ
クル性の観点から、近年、前記した２ピースボトル缶に
代わって、１ピースボトル缶のニーズが次第に高まって
きている。この１ピースボトル缶では、一般に、従来の
２ピースアルミ缶の製造方法の多くが適用され、特にダ
イネック加工や、スピンネック加工等のネック加工がそ
のまま用いられている。On the other hand, from the viewpoint of reducing the manufacturing cost of bottle cans and recyclability, the need for one-piece bottle cans has been gradually increasing in recent years instead of the two-piece bottle cans. In this one-piece bottle can, generally, many conventional methods for manufacturing a two-piece aluminum can are applied, and in particular, neck processing such as die neck processing and spin neck processing is used as it is.
【０００８】図２に従来の１ピースボトル缶の製造方法
を示す。図２に示すように、従来の１ピースボトル缶に
おいては、まず、ボトル缶の胴体部を形成するために所
定のアルミニウム板ＡにカッピングとＤＩ成形とを施し
て胴体部と底部とを形成する。次に、前記胴体部の開口
部近傍にダイネック加工またはスピンネック加工を施し
てネック部を形成し、その開口部を口部とする。その
後、この口部の近傍の外周にスクリューキャップ取り付
け用のネジ切り部を設けて従来の１ピースボトル缶が製
造されている。FIG. 2 shows a method of manufacturing a conventional one-piece bottle can. As shown in FIG. 2, in the conventional one-piece bottle can, first, a predetermined aluminum plate A is subjected to cupping and DI molding to form a body portion of the bottle can, thereby forming a body portion and a bottom portion. . Next, a neck portion is formed by performing die necking or spin necking near the opening of the body portion, and the opening is used as a mouth. Thereafter, a conventional one-piece bottle can is manufactured by providing a threaded portion for attaching a screw cap on the outer periphery near the mouth.
【０００９】しかしながら、前記従来の１ピースボトル
缶では、ネック部を形成する際に、胴体部の開口部近傍
にダイネック加工またはスピンネック加工を施してネッ
ク部を形成するため、前記胴体部の直径に対する口部の
直径の絞り比を大きくして構成することが困難であっ
た。However, in the conventional one-piece bottle can, when forming the neck portion, the neck portion is formed by performing die necking or spin necking near the opening of the body portion. However, it is difficult to increase the aperture ratio of the diameter of the opening to the aperture.
【００１０】すなわち、前記従来の１ピースボトル缶に
は、一般にＡｌ−Ｍｎ−Ｍｇ系のＪＩＳ３００４合金の
硬質板が使用されており、このようなアルミニウム合金
の硬質板（以下、単に「アルミニウム板」という。）を
用いて前記したようにして１ピースボトル缶のネック部
を形成する場合、このアルミニウム板が有する比較的硬
い硬質性によって、前記胴体部の直径に対する口部の直
径の絞り比を大きくしてボトル缶を形成するとしわや割
れが発生し易いという問題点があった。そのため、前記
従来の１ピースボトル缶では、この絞り比を、前記２ピ
ースボトル缶が有する絞り比で形成することが困難であ
った。That is, in the conventional one-piece bottle can, a hard plate of an Al-Mn-Mg-based JIS 3004 alloy is generally used, and a hard plate of such an aluminum alloy (hereinafter simply referred to as "aluminum plate") is used. When the neck portion of a one-piece bottle can is formed as described above using the above-mentioned method, the relatively hard hardness of the aluminum plate increases the draw ratio of the diameter of the mouth portion to the diameter of the body portion. When a bottle can is formed, wrinkles and cracks are easily generated. For this reason, in the conventional one-piece bottle can, it is difficult to form the drawing ratio with the drawing ratio of the two-piece bottle can.
【００１１】[0011]
【発明が解決しようとする課題】前記した問題点に鑑
み、本発明の課題は、１ピース構造からなるボトル缶に
おいて、胴体部の直径に対する口部の直径の絞り比を大
きくしてもしわや割れを発生させないようなアルミニウ
ム板を提供することにある。SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a bottle can having a one-piece structure, even if the drawing ratio of the diameter of the mouth to the diameter of the body is increased. An object of the present invention is to provide an aluminum plate that does not crack.
【００１２】[0012]
【課題を解決するための手段】本発明者等は、前記した
課題を解決するために鋭意検討した結果、Ｆｅ、Ｓｉ、
ＭｎおよびＭｇの含有量とベーキング後の耐力（０．２
％耐力）とを適正な範囲に規制することによって、アル
ミニウム板の成形性、すなわち、ＤＩ成形、ネック加工
等の成形性を向上させることができ、その結果として胴
体部の直径に対する口部の直径の絞り比を大きくして、
従来の２ピースボトル缶が有するネック部と同程度の形
状を備える１ピースボトル缶を形成しても、しわや割れ
を発生させないアルミニウム板を具現化することができ
ることを見いだし、本発明を創作するに至った。The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that Fe, Si,
The content of Mn and Mg and the proof stress after baking (0.2
% Yield strength), the formability of the aluminum plate, that is, the formability of DI forming, neck processing, etc., can be improved, and as a result, the diameter of the mouth portion with respect to the diameter of the body portion can be improved. Increase the aperture ratio of
It has been found that even if a one-piece bottle can having the same shape as the neck part of a conventional two-piece bottle can is formed, an aluminum plate that does not generate wrinkles or cracks can be realized, and the present invention is created. Reached.
【００１３】すなわち、本発明の請求項１に係るボトル
缶用アルミニウム板は、胴体部と、ネック部と、ネジ切
り加工が施されたネジ部を備えた口部とが一体に形成さ
れてなるボトル缶において、このボトル缶の胴体部の直
径をＤ1とし、口部の直径をＤ2として、前記胴体部の直
径に対する口部の直径の絞り比Ｒ1（％）を、Ｒ1＝
｛（Ｄ1−Ｄ2）／Ｄ1｝×１００…（式１）、として表
したとき、このように表される絞り比Ｒ1が３０％以上
であるボトル缶に用いられるＡｌを主成分とするアルミ
ニウム板であって、前記アルミニウム板は、Ｆｅを０．
２〜０．７質量％、Ｓｉを０．１〜０．３質量％、Ｍｎ
を０．５〜１．２質量％、Ｍｇを０．５〜１．２質量％
含有し、残部がＡｌと不可避的不純物からなる組成を有
し、且つベーキング後の耐力（０．２％耐力）が２２０
〜２５０Ｎ／ｍｍ2として構成されることを特徴とす
る。That is, the aluminum plate for a bottle can according to the first aspect of the present invention has a body portion, a neck portion, and a mouth portion having a threaded portion formed integrally with a thread. in a bottle can, the diameter of the body portion of the bottle can as D 1, the diameter of the mouth portion as D 2, aperture ratio of the diameter of the mouth portion to the diameter of the body portion R 1 a (%), R 1 =
When expressed as {(D 1 −D 2 ) / D 1 } × 100 (Equation 1), the main component is Al used for a bottle can having a drawing ratio R 1 of 30% or more. An aluminum plate, wherein the aluminum plate contains Fe in an amount of 0.1.
2 to 0.7% by mass, 0.1 to 0.3% by mass of Si, Mn
0.5 to 1.2% by mass, Mg 0.5 to 1.2% by mass
Contained, the balance being composed of Al and unavoidable impurities, and having a proof stress after baking (0.2% proof stress) of 220.
２５０250 N / mm 2 .
【００１４】ここで、前記「絞り比」とは、ボトル缶の
製造工程で、ネッキングが施される前の直径に対するネ
ッキングが施された後の直径の減少割合を意味するもの
である。したがって、ボトル缶の製造工程で、ネッキン
グが施される前の口部の直径が、ネッキングが施されて
口部が形成された後の胴体部の直径と略同一であれば、
「口部の絞り比」は上記（式１）で表される。一方、例
えば、ネッキングによって口部が形成された後、胴体部
が変形されるなどして、ネッキング前の口部の直径とネ
ッキングにより口部が形成された後の胴体部の直径とが
異なる場合には、前記（式１）に含まれるＤ1は、ネッ
キング前の口部の直径となる。Here, the "drawing ratio" means the ratio of the diameter before necking to the diameter before necking in the process of manufacturing a bottle can. Therefore, in the manufacturing process of the bottle can, if the diameter of the mouth before necking is substantially the same as the diameter of the body after the neck is formed and the mouth is formed,
“The aperture ratio at the mouth” is represented by the above (Equation 1). On the other hand, for example, after the mouth is formed by necking, the body is deformed, and the diameter of the mouth before necking is different from the diameter of the body after the mouth is formed by necking. , said D 1 included in the (formula 1) is a diameter of the mouth portion before necking.
【００１５】このように構成すれば、アルミニウム板の
成形性が高められて、従来の２ピースボトル缶が有する
ネック部と同程度の形状を備える１ピースボトル缶を容
易に製造することが可能なアルミニウム板を具現化する
ことができる。特に、前記胴体部の所定部分にダイネッ
ク加工またはスピンネック加工を施してネック部を形成
する際に、胴体部の径に対する口部の径の絞り比を３０
％以上としても、しわや割れの発生を抑制したアルミニ
ウム板を具現化することができる。According to this structure, the formability of the aluminum plate is enhanced, and it is possible to easily manufacture a one-piece bottle can having the same shape as the neck of a conventional two-piece bottle can. An aluminum plate can be embodied. In particular, when forming a neck portion by subjecting a predetermined portion of the body portion to die necking or spin necking, the drawing ratio of the diameter of the mouth portion to the diameter of the body portion is set to 30.
% Or more, it is possible to realize an aluminum plate in which generation of wrinkles and cracks is suppressed.
【００１６】請求項２に係るボトル缶用アルミニウム板
は、請求項１において、前記アルミニウム板が、さらに
Ｃｕを０．１〜０．３質量％含有してなることを特徴と
する。このように構成すれば、アルミニウム板の強度が
上昇するとともに、製缶時のベーキングによる軟化を防
止したボトル缶用アルミニウム板を具現化することがで
きる。According to a second aspect of the present invention, there is provided an aluminum plate for a bottle can, wherein the aluminum plate further contains 0.1 to 0.3% by mass of Cu. With this configuration, it is possible to realize an aluminum plate for a bottle can in which the strength of the aluminum plate is increased and softening due to baking during can making is prevented.
【００１７】請求項３に係るボトル缶用アルミニウム板
は、請求項１または請求項２において、４５°耳の耳率
が２．５％以下であることを特徴とする。このように構
成すれば、ボトル缶を成形する際に行なわれるトリミン
グしろをより少なくすることが可能なボトル缶用アルミ
ニウム板を具現化することができる。The aluminum plate for a bottle can according to a third aspect is characterized in that, in the first or second aspect, a 45 ° ear ratio is 2.5% or less. According to this structure, an aluminum plate for a bottle can be embodied, which can reduce the margin for trimming performed when the bottle can is formed.
【００１８】[0018]
【発明の実施の形態】以下、本発明の好ましい実施の形
態について詳細に説明する。なお、本発明はこの実施の
形態のみに限定されるものではなく、本発明の技術的思
想に基づく限りにおいて適宜に変更することが可能であ
る。図１は、本発明に係るボトル缶用アルミニウム板が
適用される一例のボトル缶の構成を模式的に示す斜視図
である。図１に示すように、本発明に係るボトル缶１
は、胴体部２とネック部３と底部６とがＤＩ成形により
一体に成形加工されてなる１ピースボトル缶である。す
なわち、ボトル缶１は、胴体部２とこの胴体部２の所定
部分にネック部３が形成され、このネック部３のエンド
部には口部４が形成されている。そしてこの口部４の近
傍の外周にはキャップ取り付け用のネジ切り加工が施さ
れてネジ部５が設けられている。そして、この口部４と
対向する部分の底部６が胴体部２と連続して構成されて
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail. It should be noted that the present invention is not limited to only this embodiment, and can be appropriately modified as long as it is based on the technical idea of the present invention. FIG. 1 is a perspective view schematically showing the configuration of an example of a bottle can to which the aluminum plate for a bottle can according to the present invention is applied. As shown in FIG. 1, a bottle can 1 according to the present invention
Is a one-piece bottle can in which the body 2, neck 3, and bottom 6 are integrally formed by DI molding. That is, the bottle can 1 has a body portion 2 and a neck portion 3 formed at a predetermined portion of the body portion 2, and a mouth portion 4 is formed at an end portion of the neck portion 3. A screw portion 5 is provided on the outer periphery near the mouth portion 4 by threading for cap attachment. The bottom portion 6 of the portion facing the mouth portion 4 is configured to be continuous with the body portion 2.
【００１９】そして、本発明に係るボトル缶用アルミニ
ウム板が適用されるボトル缶にあっては、図１に示すよ
うに、ボトル缶１の胴体部２の直径Ｄ1に対する口部４
の直径Ｄ2の絞り比Ｒ1（％）が３０％以上として構成さ
れる。すなわち、絞り比Ｒ1（％）を、Ｒ1＝｛（Ｄ1−
Ｄ2）／Ｄ1｝×１００とするとき、Ｒ1≧３０（％）と
なるように構成される。なお、ここでは、ボトル缶１の
製造工程で、ネッキング前の口部の直径がネッキング後
の胴体部の直径と略同一である場合を例に挙げて説明し
ている。[0019] Then, in the bottle can which aluminum sheet for bottle can of the present invention is applied, as shown in FIG. 1, the mouth portion 4 to the diameter D 1 of the body portion 2 of the bottle can 1
And the drawing ratio R 1 (%) of the diameter D 2 is 30% or more. That is, the aperture ratio R 1 (%) is calculated as follows: R 1 = ｛(D 1 −
When D 2 ) / D 1 ｝ × 100, R 1 ≧ 30 (%). Here, in the manufacturing process of the bottle can 1, a case where the diameter of the mouth portion before necking is substantially the same as the diameter of the body portion after necking is described as an example.
【００２０】そして、このように、本発明に係るボトル
缶用アルミニウム板が適用されるボトル缶の胴体部の直
径に対する口部の直径の絞り比を３０％以上としてもし
わや割れが発生しないようにするために、Ｆｅ、Ｓｉ、
Ｍｎ、Ｍｇの各含有量と、ベーキング後の耐力（０．２
％耐力）とを適正な範囲内に規制している。そこで、ま
ずこれらの成分の含有量を数値限定した理由について説
明する。As described above, wrinkles and cracks do not occur even when the drawing ratio of the diameter of the mouth to the diameter of the body of the bottle can to which the aluminum plate for a bottle can according to the present invention is applied is 30% or more. , Fe, Si,
The respective contents of Mn and Mg, and the proof stress after baking (0.2
% Proof stress) within an appropriate range. Therefore, the reason why the contents of these components are numerically limited will be described first.
【００２１】《Ｆｅの含有量：０．２〜０．７質量％》
Ｆｅは、アルミニウム板中の結晶粒を微細化させるとと
もに、金属間化合物（α相）を適正に分散させて、成形
性を向上させるために効果的な成分である。すなわち、
アルミニウム板中のＦｅの含有量が０．２質量％未満で
はそれらの効果が充分に得られず、またＦｅの含有量が
０．７質量％を超えると化合物（α相）の粗大化による
成形性の低下が生じ易くなる。したがって、アルミニウ
ム板中のＦｅの含有量は０．２〜０．７質量％とする。<< Fe content: 0.2-0.7% by mass >>
Fe is an effective component for refining the crystal grains in the aluminum plate and appropriately dispersing the intermetallic compound (α phase) to improve the formability. That is,
If the content of Fe in the aluminum plate is less than 0.2% by mass, these effects cannot be sufficiently obtained, and if the content of Fe exceeds 0.7% by mass, the compound (α phase) is formed by coarsening. The property is likely to decrease. Therefore, the content of Fe in the aluminum plate is set to 0.2 to 0.7% by mass.
【００２２】《Ｓｉの含有量：０．１〜０．３質量％》
Ｓｉは、アルミニウム板中で金属間化合物（α相）を形
成させて成形性を向上させるのに効果的な成分である。
すなわち、アルミニウム板中のＳｉの含有量が０．１質
量％未満ではその効果が小さ過ぎ、またＳｉの含有量が
０．３質量％を超えるとＭｇ2Ｓｉによる強度上昇が過
剰となって成形性が阻害される。したがって、アルミニ
ウム板中のＳｉの含有量は０．１〜０．３質量％とす
る。<< Si content: 0.1-0.3% by mass >>
Si is an effective component for improving the formability by forming an intermetallic compound (α phase) in an aluminum plate.
That is, molding the content of Si of the aluminum plate in less than 0.1 wt%, the effect is too small, also the Si content becomes excessive increase in strength when Mg 2 Si exceeds 0.3 mass% Sex is inhibited. Therefore, the content of Si in the aluminum plate is set to 0.1 to 0.3% by mass.
【００２３】《Ｍｎの含有量：０．５〜１．２質量％》
Ｍｎは、アルミニウム板の強度上昇に寄与するととも
に、金属間化合物であるＡｌ−Ｍｎ−Ｆｅ−Ｓｉ（α
相）を適正に分散させて、しごき加工の成形性（しごき
成形性）を向上させるのに効果的な成分である。すなわ
ち、アルミニウム板中のＭｎの含有量が０．５質量％未
満では、それらの効果が充分に得られず、またＭｎの含
有量が１．２％を超えるとＭｎＡｌ6の巨大な初晶が晶
出し、成形性が低下する。したがって、アルミニウム板
中のＭｎの含有量は、０．５〜１．２質量％とする。<< Mn content: 0.5 to 1.2% by mass >>
Mn contributes to the increase in the strength of the aluminum plate and Al-Mn-Fe-Si (α
Phase) is an effective component for appropriately dispersing and improving the formability of ironing (ironing formability). That is, if the content of Mn in the aluminum plate is less than 0.5% by mass, these effects cannot be sufficiently obtained, and if the content of Mn exceeds 1.2%, a huge primary crystal of MnAl 6 is formed. Crystallization and moldability decrease. Therefore, the content of Mn in the aluminum plate is set to 0.5 to 1.2% by mass.
【００２４】《Ｍｇの含有量：０．５〜１．２質量％》
Ｍｇは、アルミニウム板中に単独で固溶してアルミニウ
ム板の強度上昇に寄与するとともに、Ｓｉと共存するこ
とによってＭｇ2Ｓｉの時効析出よる強度上昇の効果を
発現しうる成分である。また、Ｍｇは、後記するような
任意成分としてのＣｕが存在する場合にアルミニウム板
の連続焼鈍でＡｌ−Ｃｕ−Ｍｇ系の金属間化合物を析出
させて、製缶時のベーキングによるアルミニウム板の軟
化防止に有効な成分である。すなわち、アルミニウム板
中のＭｇの含有量が、０．５％未満では前記したいずれ
の効果も充分に得ることができす、またＭｎの含有量が
１．２質量％を超えると加工硬化が過剰となって成形性
が阻害される。したがって、アルミニウム板中のＭｇの
含有量は、０．５〜１．２質量％とする。<< Mg content: 0.5 to 1.2% by mass >>
Mg is a component that can form a solid solution in an aluminum plate alone to contribute to an increase in the strength of the aluminum plate and, when coexisting with Si, exert an effect of increasing the strength by aging precipitation of Mg 2 Si. In addition, when Cu is present as an optional component as described below, Mg precipitates Al-Cu-Mg intermetallic compounds by continuous annealing of the aluminum plate, and softens the aluminum plate by baking during can making. It is an effective ingredient for prevention. That is, if the content of Mg in the aluminum plate is less than 0.5%, any of the above effects can be sufficiently obtained, and if the content of Mn exceeds 1.2% by mass, work hardening is excessive. As a result, moldability is impaired. Therefore, the content of Mg in the aluminum plate is set to 0.5 to 1.2% by mass.
【００２５】《Ｃｕの含有量：０．１〜０．３質量％》
Ｃｕは、アルミニウム板の強度上昇に効果的であるとと
もに、アルミニウム板を連続焼鈍したときにＭｇとＡｌ
−Ｃｕ−Ｍｇ系の金属間化合物を析出させて、製缶時の
ベーキングによるアルミニウム板の軟化防止に有効な成
分である。すなわち、アルミニウム板中のＣｕの含有量
が０．１質量％未満ではこれらの効果が小さく、またＣ
ｕの含有量が０．３質量％を超えるとアルミニウム板の
強度上昇の効果が過剰となって好ましくない。したがっ
て、アルミニウム板中のＣｕの含有量は０．１〜０．３
質量％とすることが好ましい。<< Cu content: 0.1 to 0.3% by mass >>
Cu is effective in increasing the strength of the aluminum plate, and when the aluminum plate is continuously annealed, Mg and Al
-A component effective for precipitating a Cu-Mg intermetallic compound and preventing softening of the aluminum plate by baking during can-making. That is, when the content of Cu in the aluminum plate is less than 0.1% by mass, these effects are small, and
If the content of u exceeds 0.3% by mass, the effect of increasing the strength of the aluminum plate becomes excessive, which is not preferable. Therefore, the content of Cu in the aluminum plate is 0.1 to 0.3.
It is preferable to set it as mass%.
【００２６】また、本発明に係るボトル缶用アルミニウ
ム板にあっては、前記した必須成分および任意成分のほ
かに、Ｔｉを１質量％以下、Ｚｎを１質量％以下、およ
びＣｒを１質量％以下含んで構成してもよい。すなわ
ち、Ｔｉを１質量％以下添加すると、アルミニウム板鋳
塊の結晶粒を微細化するのに有効である。また、Ｚｎを
１質量％以下添加すると、晶出物の分散を適正化すると
ともに、絞り加工性、しごき加工の成形性、およびフラ
ンジ加工の成形性の向上に有効である。In the aluminum plate for a bottle can according to the present invention, in addition to the above essential and optional components, 1% by mass or less of Ti, 1% by mass or less of Zn, and 1% by mass of Cr are included. The following may be included. That is, adding 1% by mass or less of Ti is effective in refining the crystal grains of the aluminum plate ingot. Further, when Zn is added in an amount of 1% by mass or less, the dispersion of the crystallized substance is optimized, and it is effective in improving the drawability, the ironing formability, and the flangeability.
【００２７】《ベーキング後の耐力（０．２％耐力）：
２２０〜２５０Ｎ／ｍｍ2》次に、本発明に係るボトル
缶用アルミニウム板のベーキング後の耐力（０．２％耐
力）を２２０〜２５０Ｎ／ｍｍ2に規制した理由につい
て説明する。なお、このベーキング後の耐力（０．２％
耐力）は、アルミニウム板を２１０℃で１０分間保持し
た後、引張試験を行ない得られたものである。本発明に
係るボトル缶用アルミニウム板にＤＩ成形、トリミン
グ、洗浄、ベーキングを行なった後、缶の胴体部の直径
に対する口部の直径の比率である絞り比を３０％以上と
して、絞り比の高いネック加工を施してボトル缶を形成
する際、ベーキング後の耐力（０．２％耐力）が２２０
Ｎ／ｍｍ2未満であると、ボトル缶の缶強度（耐圧強
度、座屈強度）が低下し、飲料缶に要求される強度を充
分に満足させることができないアルミニウム板となる虞
がある。また、前記ベーキング後の耐力（０．２％耐
力）が２５０Ｎ／ｍｍ2を超えると前記ボトル缶のネッ
ク部の口部で、しわや割れが発生し易くなる。したがっ
て、本発明に係るボトル缶用アルミニウム板にあって
は、ベーキング後の耐力（０．２％耐力）を２２０〜２
５０Ｎ／ｍｍ2に規制することが望ましい。<< Proof Strength after Baking (0.2% Proof Strength):
220~250N / mm 2 "will be described why the proof stress after baking of the aluminum plate for bottle cans according to the present invention (0.2% proof stress) was regulated to 220~250N / mm 2. The proof stress after baking (0.2%
The proof stress was obtained by holding the aluminum plate at 210 ° C. for 10 minutes and conducting a tensile test. After DI forming, trimming, washing, and baking are performed on the aluminum plate for a bottle can according to the present invention, the drawing ratio, which is the ratio of the diameter of the mouth to the diameter of the body of the can, is set to 30% or more, and the drawing ratio is high. When forming a bottle can by performing neck processing, the proof stress (0.2% proof stress) after baking is 220.
When it is less than N / mm 2 , the can strength (pressure resistance, buckling strength) of the bottle can is reduced, and there is a possibility that the aluminum plate may not be able to sufficiently satisfy the strength required for the beverage can. If the proof stress after baking (0.2% proof stress) exceeds 250 N / mm 2 , wrinkles and cracks are likely to occur at the mouth of the neck of the bottle can. Therefore, in the aluminum plate for a bottle can according to the present invention, the proof stress (0.2% proof stress) after baking is 220 to 2%.
It is desirable to regulate to 50 N / mm 2 .
【００２８】《４５°耳の耳率：２．５％以下》次に、
本発明に係るボトル缶用アルミニウム板の４５°耳の耳
率を２．５％以下に規制した理由について説明する。な
お、ここでは前記４５°耳の耳率を直径がφ６６ｍｍの
アルミニウム板からなるブランクを直径がφ４０ｍｍの
ポンチで絞り、このようにして形成した絞りカップの耳
高さから算出した。本発明に係るボトル缶用アルミニウ
ム板に、缶の胴体部の直径に対する口部の直径の比率で
ある絞り比を３０％以上として絞り比の高いネック加工
を施した場合、この素材が有する耳率に応じてネック加
工中に上端部の耳が発達する。その際、この耳が過度に
発達するとネック加工の成形性が阻害されないようにネ
ック加工の途中で数回程度のトリミングを行なうことが
必要となる。<< 45% ear ratio: 2.5% or less >>
The reason why the ear ratio of the 45 ° ear of the aluminum plate for a bottle can according to the present invention is limited to 2.5% or less will be described. In this case, the ear ratio of the 45 ° ear was calculated from the ear height of the drawn cup formed by squeezing a blank made of an aluminum plate having a diameter of φ66 mm with a punch having a diameter of φ40 mm. When the aluminum plate for a bottle can according to the present invention is subjected to neck processing with a high drawing ratio by setting the drawing ratio, which is the ratio of the diameter of the mouth portion to the diameter of the body portion of the can, to 30% or more, the ear ratio of this material The ears at the upper end develop during the necking. At this time, if the ears are excessively developed, it is necessary to perform trimming several times during the neck processing so that the formability of the neck processing is not hindered.
【００２９】すなわち、素材の耳率が２．５％を超える
とネック加工中の耳が過剰に高くなってトリミングしろ
やトリミング回数を増加させなければならず、また、ネ
ック部の板厚が周方向で不均一となるため、ネック加工
の成形性が低下するなどの不具合が生じる。したがっ
て、本発明に係るボトル缶用アルミニウム板にあって
は、４５°耳の耳率を２．５％以下とすることが好まし
い。なお、この４５°耳の耳率は２．５％以下であれば
マイナスの大きさであってもよいが、過度に低くなる
と、例えばネック加工中に、０°または１８０°方向で
発生した耳による耳切れが発生するという問題や、前記
した素材の耳率が２．５％を超える場合と同様にトリミ
ングの必要性が生じるといった問題が起こる場合がある
ため、この４５°耳の耳率は−１．０％以上であること
が望ましい。That is, if the ear ratio of the material exceeds 2.5%, the ears during the neck processing become excessively high, so that the margin for trimming and the number of times of trimming must be increased, and the thickness of the neck portion is reduced. Since the directions are not uniform, problems such as a decrease in formability of neck processing occur. Therefore, in the aluminum plate for a bottle can according to the present invention, the ear ratio of the 45 ° ear is preferably 2.5% or less. Note that the ear ratio of the 45 ° ear may be a negative value as long as it is 2.5% or less. However, if the ear ratio is excessively low, for example, the ear generated in the 0 ° or 180 ° direction during neck processing. In some cases, there is a problem that an ear break occurs due to the above-mentioned material, or a problem arises in that trimming is required as in the case where the ear ratio of the material exceeds 2.5%. It is desirably −1.0% or more.
【００３０】なお、本発明に係るボトル缶用アルミニウ
ム板にあっては、前記したような従来のアルミニウム板
製ボトル缶の製造方法を用いてボトル缶を製造すること
ができる。すなわち、本発明に係るボトル缶用アルミニ
ウム板は、まず、常法に従って本発明に係る組成を有す
るアルミニウム板の鋳塊を作製し、このアルミニウム板
の鋳塊に均質化熱処理を施した後、熱間圧延を施し、続
いて、焼鈍処理を施した後、冷間圧延処理を施して作製
することができる。なお、前記熱間圧延と冷間圧延との
間に行なわれる焼鈍処理は省略することも可能である。In the aluminum plate for a bottle can according to the present invention, the bottle can can be manufactured by using the above-described conventional method for manufacturing a bottle can made of an aluminum plate. That is, the aluminum plate for a bottle can according to the present invention firstly prepares an ingot of an aluminum plate having the composition according to the present invention in accordance with a conventional method, and after subjecting this ingot of the aluminum plate to a homogenizing heat treatment, It can be manufactured by performing cold rolling, followed by cold rolling after performing cold rolling and then annealing. Note that the annealing performed between the hot rolling and the cold rolling can be omitted.
【００３１】その後、図２に示すような従来のアルミニ
ウム板からなる１ピースボトル缶の製造方法である、カ
ッピング、ＤＩ成形、トリミング、洗浄（図示省略）、
印刷（図示方略）、ベーキング（図示省略）、ネッキン
グ等の工程を経て所定の形状に成形加工され、さらに口
部の近傍の外周にスクリューキャップ取り付け用のネジ
切り加工が施されてネジ部が形成され、口部の直径が、
胴体部の直径に対して小さく形成されてなる本発明に係
る１ピースボトル缶本発明が得られる。Thereafter, cupping, DI molding, trimming, washing (not shown), which is a conventional method for manufacturing a one-piece bottle can made of an aluminum plate as shown in FIG.
It is formed into a predetermined shape through processes such as printing (not shown), baking (not shown), necking, etc., and is further subjected to a thread cutting process for attaching a screw cap on the outer periphery near the mouth to form a screw portion. And the diameter of the mouth is
A one-piece bottle can according to the present invention, which is formed smaller than the diameter of the body, can be obtained.
【００３２】なお、本発明に係るボトル缶用アルミニウ
ム板が適用されるボトル缶で、図１に示すようなネック
部３と胴体部２とを結ぶ側面が胴体部２の側面となす角
度は、前記絞り比が本発明で規制する範囲内であれば、
特に限定されるものではない。また、本発明に係るボト
ル缶用アルミニウム板が適用されるボトル缶に用いられ
るスクリューキャップは、特に限定されるものではな
く、従来、通常に使用されているもの準用することがで
きる。In the bottle can to which the aluminum plate for a bottle can according to the present invention is applied, the angle formed by the side surface connecting the neck portion 3 and the body portion 2 with the side surface of the body portion 2 as shown in FIG. If the aperture ratio is within the range regulated by the present invention,
There is no particular limitation. Further, the screw cap used for the bottle can to which the aluminum plate for a bottle can according to the present invention is applied is not particularly limited, and those conventionally used conventionally can be applied mutatis mutandis.
【００３３】以上、本発明に係るボトル缶用アルミニウ
ム板の実施の形態として、本発明にに好適な図１に示す
ような形状を有するボトル缶を用いて説明したが、本発
明はこのような実施の形態のみに限定されるものではな
く、本発明で規制する前記の絞り比が３０％以上である
ようなボトル缶であればよい。例えば、本発明に係るボ
トル缶用アルミニウム板は胴体部の側面が湾曲した形状
にも適用することが可能である。As described above, the embodiment of the aluminum plate for a bottle can according to the present invention has been described using the bottle can having a shape as shown in FIG. 1 which is suitable for the present invention. The present invention is not limited to only the embodiment, and any bottle can be used as long as the above-described drawing ratio regulated by the present invention is 30% or more. For example, the aluminum plate for a bottle can according to the present invention can be applied to a shape in which a side surface of a body portion is curved.
【００３４】[0034]
【実施例】以下、本発明に係るボトル缶用アルミニウム
板の実施例について、詳細に説明する。なお、本発明は
この実施例のみに限定されるものではなく、本発明の技
術的思想に基づく限りにおいて適宜に変更することが可
能である。表１に、本発明に係るボトル缶用アルミニウ
ム板の必要条件を満たす実施例（Ｎｏ．１〜４）と本発
明の必要条件を満たさない比較例（Ｎｏ．５〜１８）の
構成と、各々の供試材について行なった各種の缶の加工
による成形性に関する評価結果を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the aluminum plate for a bottle can according to the present invention will be described in detail. It should be noted that the present invention is not limited to only this embodiment, and can be appropriately modified within the scope of the technical idea of the present invention. Table 1 shows the configurations of Examples (Nos. 1 to 4) satisfying the requirements of the aluminum plate for bottle cans according to the present invention and Comparative Examples (Nos. 5 to 18) not satisfying the requirements of the present invention, respectively. The evaluation results regarding the moldability of various test pieces processed by using the test material of Example 1 are shown.
【００３５】[0035]
【表１】 [Table 1]
【００３６】（供試材の評価）表１に示す成分を有し、
板厚が０．４０ｍｍのアルミニウム板の供試材を、従来
の通常の方法で製造し、このアルミニウム板に対して胴
体部の直径がφ６６ｍｍとなるようにＤＩ成形（絞り加
工、しごき加工）を施した。そして、前記ＤＩ成形工程
で１００００缶を成形した時点で、破断が発生した缶の
数によってこのしごき加工の成形性を評価した。すなわ
ち、破断が発生した缶が１００００缶中、１缶以下であ
ったものを「○（良好）」、２〜４缶であったものを
「△（概ね良好）」、５缶を超えたものを「×（不
良）」とした。(Evaluation of Test Material) Having the components shown in Table 1,
A test material of an aluminum plate having a thickness of 0.40 mm is manufactured by a conventional method, and DI forming (drawing and ironing) is performed on the aluminum plate so that the diameter of the body becomes φ66 mm. gave. Then, at the time when 10,000 cans were formed in the DI forming step, the formability of this ironing process was evaluated by the number of broken cans. That is, if the number of broken cans was 10,000 or less, 1 or less cans were rated “○ (good)”, 2 to 4 cans were rated “△ (generally good)”, and more than 5 cans Was evaluated as “× (bad)”.
【００３７】その後トリミング、洗浄、ベーキング（最
高保持温度：２１０℃）を行ない、続いて口部の直径が
φ４０ｍｍとなる（胴体部の直径に対する口部の直径の
絞り比が３９．４％である状態）までダイネック方式に
よりネック加工を施し、ネック加工の成形性について評
価した。また、ベーキング後の耐力（０．２％耐力）お
よび耳率は前述の手法によって各供試材のＮ数を２とし
て測定し、その平均値から求めた。Thereafter, trimming, washing and baking (maximum holding temperature: 210 ° C.) are performed, and then the diameter of the mouth becomes φ40 mm (the drawing ratio of the diameter of the mouth to the diameter of the body is 39.4%). Neck processing was performed by the die neck method up to the state), and the formability of the neck processing was evaluated. Further, the proof stress (0.2% proof stress) and ear ratio after baking were measured by the above-described method with the N number of each test material being 2, and the average value was obtained.
【００３８】このネック加工の成形性の評価としては、
前記ネック加工後のしわ発生具合を評価し、しわの発生
が全く見られなかったものを「○（良好）」、しわの発
生が若干見られたものを「△（概ね良好）」、顕著なし
わの発生が見られたものを「×（不良）」とした。ま
た、前記トリミング性の評価としては、ネック加工後に
おいて、耳の山と谷との差が０．７ｍｍ以下であったも
のを「○（良好）」とし、０．７ｍｍを超えたものを
「×（不良）」とした。さらに、缶強度の評価として
は、耐圧強度が６９０ｋＰａ以上かつ座屈強度が１４０
０Ｎ以上であったものを「○（良好）」とし、前記両者
のうち少なくとも一方が下回ったものを「×（不良）」
とした。As an evaluation of the formability of the neck processing,
The degree of occurrence of wrinkles after the neck processing was evaluated. A case where no wrinkles were observed was evaluated as “「 (good) ”, and a case where wrinkles were slightly observed was evaluated as“ △ (generally good) ”. The case where wrinkles were observed was evaluated as “× (defective)”. In addition, the evaluation of the trimming property is such that after the neck processing, the difference between the peak and the valley of the ear was 0.7 mm or less, “O (good)”, and the one exceeding 0.7 mm was “ × (bad) ”. Furthermore, as for evaluation of can strength, pressure strength was 690 kPa or more and buckling strength was 140
A sample having a value of 0N or more was marked as “○ (good)”, and a sample with at least one of the two values below “x (bad)”
And
【００３９】表１に示すように、本発明に係るボトル缶
用アルミニウム板の必要条件を満たす実施例（Ｎｏ．１
〜４）にあっては、いずれもボトル缶の成形時に要求さ
れるしごき加工の成形性およびネック加工の成形性が
「○（良好）」であり、またトリミング性も「○（良
好）〜△（概ね良好）」であり、さらに缶強度も「○
（良好）」となっていることがわかる。As shown in Table 1, an embodiment satisfying the necessary conditions of the aluminum plate for a bottle can according to the present invention (No. 1)
In each of (4) to (4), the formability of the ironing process and the formability of the neck process required at the time of forming the bottle can are “○ (good)”, and the trimming properties are also “「 (good) to △ ”. (Generally good) "and the can strength was" ○
(Good) ".
【００４０】それに対して、本発明の必要条件を満たさ
ない比較例（Ｎｏ．５〜１８）においては、Ｓｉ、Ｆ
ｅ、Ｍｎ、Ｍｇ、Ｃｕのうちのいずれか一つの含有量が
本発明で規制する範囲の下限値未満または上限値超であ
るため、本発明に係るボトル缶の成形時に要求される特
性が充分に満たされていないという結果が得られた。On the other hand, in Comparative Examples (Nos. 5 to 18) which do not satisfy the requirements of the present invention, Si, F
e, Mn, Mg, because the content of any one of Cu is less than the lower limit or more than the upper limit of the range regulated by the present invention, the properties required at the time of molding the bottle can according to the present invention is sufficient Was not satisfied.
【００４１】すなわち、表１に示すように、比較例Ｎ
ｏ．５、６はＳｉの含有量が本発明で規制する範囲から
外れており、Ｎｏ．６の４５°耳の耳率が本発明で規制
する上限値を超え、その結果Ｎｏ．６のトリミング性の
評価が「×（不良）」となっていることがわかる。ま
た、比較例Ｎｏ．７、８はＦｅの含有量が本発明で規制
する範囲から外れており、Ｎｏ．８の４５°耳の耳率が
本発明で規制する上限値を超え、その結果Ｎｏ．８のト
リミング性が「×（不良）」となっていることがわか
る。That is, as shown in Table 1, Comparative Example N
o. In Nos. 5 and 6, the Si content was out of the range regulated by the present invention. The ear ratio of the 45 ° ear of No. 6 exceeds the upper limit value regulated by the present invention. It can be seen that the evaluation of the trimming property of No. 6 was “× (bad)”. Also, in Comparative Example No. In Nos. 7 and 8, the Fe content was out of the range regulated by the present invention. The ear ratio of the 45 ° ear of No. 8 exceeds the upper limit value regulated by the present invention. It can be seen that the trimming property of No. 8 is “× (defective)”.
【００４２】また、比較例Ｎｏ．９、１０はＭｎの含有
量が本発明で規制する範囲から外れており、Ｎｏ．９の
ベーキング後の耐力（０．２％耐力）が２０５Ｎ／ｍｍ
2と小さくなり、しごき加工の成形性および缶強度の評
価が「×（不良）」となっている。さらに、比較例Ｎ
ｏ．１１、１２はＭｇの含有量が本発明で規制する範囲
から外れており、Ｎｏ．１２の４５°耳の耳率が本発明
で規制する上限値を超え、ネック加工後に耳が形成され
てネック加工の成形性の評価が「×（不良）」となり、
トリミングしろが大きくなってトリミング性の評価が
「×（不良）」となっている。また、Ｎｏ．１１ではベ
ーキング後の耐力（０．２％耐力）が２１１Ｎ／ｍｍ2
と小さく、そのため缶強度の評価が「×（不良）」とな
っている。Further, in Comparative Example No. In Nos. 9 and 10, the Mn content was out of the range regulated by the present invention. 9 has a proof stress after baking (0.2% proof stress) of 205 N / mm.
2 and the evaluation of the formability of ironing and the strength of the can were evaluated as “× (poor)”. Further, Comparative Example N
o. In Nos. 11 and 12, the Mg content was out of the range regulated by the present invention. 12, the ear ratio of the 45 ° ear exceeds the upper limit value regulated by the present invention, the ear is formed after the neck processing, and the evaluation of the formability of the neck processing is “× (poor)”,
The margin for trimming is large, and the evaluation of the trimming property is “× (bad)”. In addition, No. In No. 11, the yield strength after baking (0.2% yield strength) was 211 N / mm 2.
Therefore, the evaluation of the can strength was “× (defective)”.
【００４３】さらにまた、比較例Ｎｏ．１３、１４はＣ
ｕの含有量が本発明に係る範囲から外れており、Ｎｏ．
１４のネック加工の成形性とトリミング性の評価が「×
（不良）」となり、またＮｏ．１５のベーキング後の耐
力（０．２％耐力）が本発明で規制する範囲の下限より
小さくなっており、その結果缶強度の評価が「×（不
良）」となっていることがわかる。そして、比較例１
５、１６はＳｉ、Ｆｅ、Ｍｎ、ＭｇおよびＣｕの各含有
量が本発明に含まれる範囲内にあるものの、４５°耳の
耳率が本発明で規制する範囲から外れており、その結果
として前記両者のトリミング性の評価が「×（不良）」
となっていることがわかる。Further, Comparative Example No. 13 and 14 are C
No. u is out of the range according to the present invention.
The evaluation of the formability and trimming property of the neck processing of No. 14 was “×
(Poor) ”and No. It can be seen that the proof stress after baking (0.2% proof stress) of No. 15 was smaller than the lower limit of the range regulated by the present invention, and as a result, the evaluation of the can strength was “× (defective)”. And Comparative Example 1
5, 16 have the respective contents of Si, Fe, Mn, Mg and Cu within the range included in the present invention, but the ear ratio of the 45 ° ear is out of the range regulated by the present invention, and as a result, The evaluation of the trimming properties of the two was “× (bad)”
It turns out that it becomes.
【００４４】そしてまた、比較例１７、１８はＳｉ、Ｆ
ｅ、Ｍｎ、ＭｇおよびＣｕの各含有量、ならびに４５°
耳の耳率が本発明に含まれる範囲内にあるものの、Ｎ
ｏ．１７のベーキング後の耐力（０．２％耐力）が本発
明で規制する範囲の下限より小さくなっており、その結
果缶強度の評価が「×（不良）」となっている。一方、
Ｎｏ．１８のベーキング後の耐力（０．２％耐力）が本
発明で規制する範囲の上限を超えており、その結果成ネ
ック加工の成形性の評価が「×（不良）」となってい
る。Further, Comparative Examples 17 and 18 were made of Si, F
e, Mn, Mg and Cu contents, and 45 °
Although the ear ratio of the ear is within the range included in the present invention, N
o. The proof stress after baking (0.2% proof stress) of Sample No. 17 was smaller than the lower limit of the range regulated by the present invention, and as a result, the evaluation of the can strength was “× (defective)”. on the other hand,
No. The proof stress after baking (0.2% proof stress) of Sample No. 18 exceeded the upper limit of the range regulated by the present invention, and as a result, the evaluation of the moldability of the neck forming was “× (poor)”.
【００４５】なお、表１には、各種アルミニウム板にネ
ック加工等を施して胴体部の直径に対する口部の直径の
絞り比を３９．４％としたときのしごき成形性、ネック
加工の成形性、トリミング性および缶強度の各評価の結
果について示したが、本発明者等が、本発明の必要条件
を満たす実施例、およびネック加工の成形性とトリミン
グ性で問題があった比較例について、前記絞り比を３０
％未満として前記の各評価を実施したところ特に問題は
見られなかった。Table 1 shows the iron formability and the formability of neck processing when various aluminum plates are subjected to neck processing and the like and the drawing ratio of the diameter of the mouth to the diameter of the body is set to 39.4%. The results of each evaluation of the trimming properties and can strength were shown.However, the present inventors, for the examples satisfying the requirements of the present invention, and for the comparative examples having problems in the moldability and trimming properties of the neck processing, The aperture ratio is 30
%, No particular problem was observed.
【００４６】一方、本発明者等がこれらのアルミニウム
板に前記ネック加工等を施して前記絞り比が３０％以上
となるように胴体部と口部とを形成して前記の各評価を
実施したところ、本発明の必要条件を満たす実施例にあ
っては前記の各評価がいずれも「○（良好）」であった
が、本発明の必要条件を満たさない比較例においては前
記の各評価のうちの少なくとも一つが「×（不良）」と
なることが明らかとなった。On the other hand, the present inventors performed the neck processing and the like on these aluminum plates to form a body portion and a mouth portion so that the drawing ratio became 30% or more, and carried out each of the above evaluations. However, in the examples satisfying the necessary conditions of the present invention, each of the above evaluations was “○ (good)”, but in the comparative examples not satisfying the necessary conditions of the present invention, It became clear that at least one of them was “x (bad)”.
【００４７】[0047]
【発明の効果】以上説明した通り、本発明の請求項１に
係るボトル缶用アルミニウム板によれば、Ｆｅ、Ｓｉ、
Ｍｎ、Ｍｇの含有量、およびベーキング後の耐力（０．
２％耐力）を所定の範囲内に規制したので成形性が高く
なり、従来の２ピースボトル缶が有する胴体部の直径に
対する口部の直径の絞り比と同程度の絞り比を有する１
ピースボトル缶を容易に製造することが可能なボトル缶
用アルミニウム板を提供することができる。As described above, according to the aluminum plate for a bottle can according to claim 1 of the present invention, Fe, Si,
The contents of Mn and Mg, and the proof stress after baking (0.
(2% proof stress) is controlled within a predetermined range, so that the formability is improved, and the conventional two-piece bottle can has a draw ratio similar to the draw ratio of the diameter of the mouth portion to the diameter of the body portion of the can.
An aluminum plate for a bottle can which can easily produce a piece bottle can can be provided.
【００４８】特に、前記胴体部の所定部分にダイネック
加工またはスピンネック加工を施してネック部を形成す
る際に、胴体部の側面方向に対して胴体部とネック部と
を結ぶ側面の方向がなす角度が従来の２ピースボトル缶
と同程度となるように１ピースボトル缶を形成しても、
しわや割れの発生を抑制することが可能なボトル缶用ア
ルミニウム板を提供することができる。In particular, when a neck portion is formed by subjecting a predetermined portion of the body portion to die necking or spin necking, the direction of the side surface connecting the body portion and the neck portion with respect to the side surface direction of the body portion. Even if a one-piece bottle can is formed so that the angle is about the same as a conventional two-piece bottle can,
An aluminum plate for a bottle can that can suppress generation of wrinkles and cracks can be provided.
【００４９】本発明の請求項２に係るボトル缶用アルミ
ニウム板によれば、前記アルミニウム板に設けた含有成
分の規制範囲に加え、Ｃｕの含有量が所定の範囲内とな
るように規制したので、アルミニウム板の強度が上昇す
るとともに、製缶時のベーキングによる軟化を防止した
ボトル缶用アルミニウム板を提供することができる。According to the aluminum plate for a bottle can according to the second aspect of the present invention, the content of Cu is regulated so as to be within a predetermined range in addition to the regulation range of the components provided in the aluminum plate. In addition, it is possible to provide an aluminum plate for a bottle can in which the strength of the aluminum plate is increased and softening due to baking during can making is prevented.
【００５０】本発明の請求項３に係るボトル缶用アルミ
ニウム板によれば、前記アルミニウム板の４５°耳の耳
率を所定の範囲内に規制したので、缶体成形を行なう際
に施されるトリミングのトリミングしろをより少なくす
ることが可能なボトル缶用アルミニウム板を提供するこ
とができる。According to the aluminum plate for a bottle can according to the third aspect of the present invention, since the ear ratio of the 45 ° ear of the aluminum plate is regulated within a predetermined range, the aluminum plate is applied when the can body is formed. It is possible to provide an aluminum plate for a bottle can that can reduce the trimming margin.
【図１】本発明に係るボトル缶用アルミニウム板が適用
される一例のボトル缶を模式的に示す斜視図である。FIG. 1 is a perspective view schematically showing an example of a bottle can to which an aluminum plate for a bottle can according to the present invention is applied.
【図２】本発明に係るボトル缶用アルミニウム板が適用
されるボトル缶の製造工程の一例を概略的に示す図面で
ある。FIG. 2 is a drawing schematically showing an example of a manufacturing process of a bottle can to which the aluminum plate for a bottle can according to the present invention is applied.
【図３】図３（ａ）は従来の２ピースボトル缶の製造工
程の一例を概略的に示す図面である。図３（ｂ）は図３
（ａ）に示す工程によって製造された２ピースボトル缶
を模式的に示す斜視図である。FIG. 3 (a) is a drawing schematically showing an example of a conventional manufacturing process of a two-piece bottle can. FIG. 3B shows FIG.
It is a perspective view which shows typically the two-piece bottle can manufactured by the process shown to (a).
１ 本発明に係るボトル缶（１ピース缶）、２ 胴体
部、３ ネック部、４口部、５ ネジ部、６ 底部、１
０ 従来のボトル缶（２ピース缶）、２０従来のボトル
缶の胴体部、３０ 従来のボトル缶のネック部、４０従
来のボトル缶のネック部、５０ 従来のボトル缶のネジ
部、６０ 従来のボトル缶の底部1. Bottle can (1 piece can) according to the present invention, 2 body, 3 neck, 4 ports, 5 screws, 6 bottom, 1
0 conventional bottle cans (2 piece cans), 20 conventional bottle can body, 30 conventional bottle can neck, 40 conventional bottle can neck, 50 conventional bottle can screw, 60 conventional bottle can Bottle can bottom
【手続補正書】[Procedure amendment]
【提出日】平成１３年６月１４日（２００１．６．１
４）[Submission date] June 14, 2001 (2001.6.1)
4)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２４[Correction target item name] 0024
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００２４】《Ｍｇの含有量：０．５〜１．２質量％》
Ｍｇは、アルミニウム板中に単独で固溶してアルミニウ
ム板の強度上昇に寄与するとともに、Ｓｉと共存するこ
とによってＭｇ2Ｓｉの時効析出による強度上昇の効果
を発現しうる成分である。また、Ｍｇは、後記するよう
な任意成分としてのＣｕが存在する場合にアルミニウム
板の連続焼鈍でＡｌ−Ｃｕ−Ｍｇ系の金属間化合物を析
出させて、製缶時のベーキングによるアルミニウム板の
軟化防止に有効な成分である。すなわち、アルミニウム
板中のＭｇの含有量が、０．５％未満では前記したいず
れの効果も充分に得ることができず、またＭｇの含有量
が１．２質量％を超えると加工硬化が過剰となって成形
性が阻害される。したがって、アルミニウム板中のＭｇ
の含有量は、０．５〜１．２質量％とする。<< Mg content: 0.5 to 1.2% by mass >>
Mg serves to contribute to the strength increase of the aluminum plate was dissolved by itself in an aluminum plate in a component capable of expressing the effect of the increase in strength due to aging precipitation of Mg 2 Si by coexisting with Si. In addition, Mg, when Cu as an optional component as described later is present, precipitates an Al-Cu-Mg intermetallic compound by continuous annealing of the aluminum plate, and softens the aluminum plate by baking during can making. It is an effective ingredient for prevention. That is, the content of Mg in the aluminum plate in is not possible to obtain sufficiently none of the effects described above, also has a work hardening Mg content exceeds 1.2 mass% excess is less than 0.5% As a result, moldability is impaired. Therefore, Mg in the aluminum plate
Is 0.5 to 1.2% by mass.
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２５[Correction target item name] 0025
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００２５】《Ｃｕの含有量：０．１〜０．３質量％》
Ｃｕは、アルミニウム板の強度上昇に効果的であるとと
もに、アルミニウム板を連続焼鈍したときにＭｇの存在
によりＡｌ−Ｃｕ−Ｍｇ系の金属間化合物を析出させ
て、製缶時のベーキングによるアルミニウム板の軟化防
止に有効な成分である。すなわち、アルミニウム板中の
Ｃｕの含有量が０．１質量％未満ではこれらの効果が小
さく、またＣｕの含有量が０．３質量％を超えるとアル
ミニウム板の強度上昇の効果が過剰となって好ましくな
い。したがって、アルミニウム板中のＣｕの含有量は
０．１〜０．３質量％とすることが好ましい。<< Cu content: 0.1 to 0.3% by mass >>
Cu is effective in increasing the strength of the aluminum plate, and the presence of Mg when the aluminum plate is continuously annealed.
By to precipitate Al-Cu-Mg system intermetallic compound is an effective ingredient in the softening prevention of the aluminum plate by baking at can manufacturing. That is, when the content of Cu in the aluminum plate is less than 0.1% by mass, these effects are small, and when the content of Cu exceeds 0.3% by mass, the effect of increasing the strength of the aluminum plate becomes excessive. Not preferred. Therefore, the content of Cu in the aluminum plate is preferably set to 0.1 to 0.3% by mass.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２６[Correction target item name] 0026
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００２６】また、本発明に係るボトル缶用アルミニウ
ム板にあっては、前記した必須成分および任意成分のほ
かに、Ｔｉを１質量％以下、Ｚｎを１質量％以下、およ
びＣｒを１質量％以下含んで構成してもよい。すなわ
ち、Ｔｉを１質量％以下添加すると、アルミニウム鋳塊
の結晶粒を微細化するのに有効である。また、Ｚｎを１
質量％以下添加すると、晶出物の分散を適正化するとと
もに、絞り加工性、しごき加工の成形性、およびフラン
ジ加工の成形性の向上に有効である。In the aluminum plate for a bottle can according to the present invention, in addition to the above essential and optional components, 1% by mass or less of Ti, 1% by mass or less of Zn, and 1% by mass of Cr or 1% by mass. The following may be included. That is, the addition of Ti 1 wt% or less, it is effective in refining the crystal grains of the aluminum ingot. In addition, Zn
Addition of not more than% by mass is effective in optimizing the dispersion of the crystallized material and improving the drawability, the formability of ironing, and the formability of flange processing.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２７[Correction target item name] 0027
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００２７】《ベーキング後の耐力（０．２％耐力）：
２２０〜２５０Ｎ／ｍｍ2》次に、本発明に係るボトル
缶用アルミニウム板のベーキング後の耐力（０．２％耐
力）を２２０〜２５０Ｎ／ｍｍ2に規制した理由につい
て説明する。なお、このベーキング後の耐力（０．２％
耐力）は、アルミニウム板を２１０℃で１０分間保持し
た後、引張試験を行ない得られたものである。本発明に
係るボトル缶用アルミニウム板にＤＩ成形、トリミン
グ、洗浄、ベーキングを行なった後、缶の胴体部の直径
に対する口部の直径の比率である絞り比を３０％以上と
して、絞り比の高いネック加工を施してボトル缶を形成
する際、ベーキング後の耐力（０．２％耐力）が２２０
Ｎ／ｍｍ2未満であると、ボトル缶の缶強度（耐圧強
度、座屈強度）が低下し、飲料缶に要求される強度を充
分に満足させることができないアルミニウム板となる虞
がある。また、前記ベーキング後の耐力（０．２％耐
力）が２５０Ｎ／ｍｍ2を超えるとネッキングの際に前
記ボトル缶のネック部の口部で、しわや割れが発生し易
くなる。したがって、本発明に係るボトル缶用アルミニ
ウム板にあっては、ベーキング後の耐力（０．２％耐
力）を２２０〜２５０Ｎ／ｍｍ2に規制することが望ま
しい。<< Proof Strength after Baking (0.2% Proof Strength):
220~250N / mm 2 "will be described why the proof stress after baking of the aluminum plate for bottle cans according to the present invention (0.2% proof stress) was regulated to 220~250N / mm 2. The proof stress after baking (0.2%
The proof stress was obtained by holding the aluminum plate at 210 ° C. for 10 minutes and conducting a tensile test. After DI forming, trimming, washing, and baking are performed on the aluminum plate for a bottle can according to the present invention, the drawing ratio, which is the ratio of the diameter of the mouth to the diameter of the body of the can, is set to 30% or more, and the drawing ratio is high. When forming a bottle can by performing neck processing, the proof stress (0.2% proof stress) after baking is 220.
When it is less than N / mm 2 , the can strength (pressure resistance, buckling strength) of the bottle can is reduced, and there is a possibility that the aluminum plate may not be able to sufficiently satisfy the strength required for the beverage can. If the proof stress after baking (0.2% proof stress) exceeds 250 N / mm 2 , wrinkles and cracks are likely to occur at the neck of the bottle can during necking. . Therefore, in the aluminum plate for a bottle can according to the present invention, it is desirable to regulate the proof stress (0.2% proof stress) after baking to 220 to 250 N / mm 2 .
【手続補正５】[Procedure amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００３０[Correction target item name] 0030
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００３０】なお、本発明に係るボトル缶用アルミニウ
ム板にあっては、前記したような従来のアルミニウム板
製ボトル缶の製造方法を用いてボトル缶を製造すること
ができる。すなわち、本発明に係るボトル缶用アルミニ
ウム板は、まず、常法に従って本発明に係る組成を有す
るアルミニウム合金の鋳塊を作製し、このアルミニウム
合金の鋳塊に均質化熱処理を施した後、熱間圧延を施
し、続いて、焼鈍処理を施した後、冷間圧延処理を施し
て作製することができる。なお、前記熱間圧延と冷間圧
延との間に行なわれる焼鈍処理は省略することも可能で
ある。In the aluminum plate for a bottle can according to the present invention, the bottle can can be manufactured by using the above-described conventional method for manufacturing a bottle can made of an aluminum plate. That is, the aluminum plate for a bottle can according to the present invention firstly prepares an ingot of an aluminum alloy having the composition according to the present invention in accordance with a conventional method.
The ingot can be produced by subjecting an ingot of the alloy to a heat treatment for homogenization, followed by hot rolling, followed by an annealing treatment, and then a cold rolling treatment. Note that the annealing performed between the hot rolling and the cold rolling can be omitted.
【手続補正６】[Procedure amendment 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００３１[Correction target item name] 0031
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００３１】その後、図２に示すような従来のアルミニ
ウム板からなる１ピースボトル缶の製造方法である、カ
ッピング、ＤＩ成形、トリミング、洗浄（図示省略）、
印刷（図示省略）、ベーキング（図示省略）、ネッキン
グ等の工程を経て所定の形状に成形加工され、さらに口
部の近傍の外周にスクリューキャップ取り付け用のネジ
成形加工が施されてネジ部が形成され、口部の直径が、
胴体部の直径に対して小さく形成されてなる本発明に係
る１ピースボトル缶が得られる。Thereafter, cupping, DI molding, trimming, washing (not shown), which is a conventional method for manufacturing a one-piece bottle can made of an aluminum plate as shown in FIG.
Printing (shown Ministry shown), baking (not shown), through the process of necking like is formed into a predetermined shape, further screw for screw cap attached to the outer periphery in the vicinity of the mouth portion
The thread is formed by molding and the diameter of the mouth is
The one-piece bottle can according to the present invention, which is formed smaller than the diameter of the body, is obtained.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ６５Ｄ 1/09 Ｂ６５Ｄ 8/04 Ｚ 8/04 Ｃ２２Ｃ 21/06 Ｃ２２Ｃ 21/06 Ｂ６５Ｄ 1/16 // Ｂ６５Ｄ 1/16 1/00 Ａ Ｆターム(参考） 3E033 AA02 BA09 CA20 DA03 DB01 FA01 GA02 3E061 AA24 AB08 BA01 BB06 BB12 BB18 DB08 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B65D 1/09 B65D 8/04 Z 8/04 C22C 21/06 C22C 21/06 B65D 1/16 // B65D 1/16 1/00 A F term (reference) 3E033 AA02 BA09 CA20 DA03 DB01 FA01 GA02 3E061 AA24 AB08 BA01 BB06 BB12 BB18 DB08
Claims (3)
施されたネジ部を備えた口部とが一体に形成されてなる
ボトル缶において、このボトル缶の胴体部の直径をＤ1
とし、口部の直径をＤ2として、前記胴体部に対する口
部の絞り比Ｒ1（％）を、Ｒ1＝｛（Ｄ1−Ｄ2）／Ｄ1｝
×１００…（式１）、として表したとき、このように表
される絞り比Ｒ1が３０％以上であるボトル缶に用いら
れるＡｌを主成分とするアルミニウム板であって、 前記アルミニウム板は、Ｆｅを０．２〜０．７質量％、
Ｓｉを０．１〜０．３質量％、Ｍｎを０．５〜１．２質
量％、Ｍｇを０．５〜１．２質量％含有し、残部がＡｌ
と不可避的不純物とからなる組成を有し、且つベーキン
グ後の耐力（０．２％耐力）が２２０〜２５０Ｎ／ｍｍ
2として構成されることを特徴とするボトル缶用アルミ
ニウム板。1. In a bottle can having a body, a neck, and a mouth provided with a threaded portion formed integrally, a diameter of the body of the bottle can is D 1.
Where D 2 is the diameter of the mouth, and the drawing ratio R 1 (%) of the mouth relative to the body is R 1 = {(D 1 −D 2 ) / D 1 }.
When expressed as × 100 (Equation 1), this is an aluminum plate containing Al as a main component and used for a bottle can having a drawing ratio R 1 of 30% or more, and the aluminum plate is , Fe is 0.2 to 0.7% by mass,
0.1-0.3% by mass of Si, 0.5-1.2% by mass of Mn, 0.5-1.2% by mass of Mg, with the balance being Al
And a proof strength (0.2% proof strength) of 220 to 250 N / mm after baking.
An aluminum plate for a bottle can, which is configured as 2 .
０．１〜０．３質量％含有して構成されることを特徴と
する請求項１に記載のボトル缶用アルミニウム板。2. The aluminum plate for a bottle can according to claim 1, wherein the aluminum plate further contains 0.1 to 0.3% by mass of Cu.
とを特徴とする請求項１または請求項２に記載のボトル
缶用アルミニウム板。3. The aluminum plate for a bottle can according to claim 1, wherein an ear ratio of the 45 ° ear is 2.5% or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001052234A JP2002256366A (en) | 2001-02-27 | 2001-02-27 | Aluminum sheet for bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001052234A JP2002256366A (en) | 2001-02-27 | 2001-02-27 | Aluminum sheet for bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002256366A true JP2002256366A (en) | 2002-09-11 |
Family
ID=18912896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001052234A Pending JP2002256366A (en) | 2001-02-27 | 2001-02-27 | Aluminum sheet for bottle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002256366A (en) |
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|---|---|---|---|---|
| JP2004183035A (en) * | 2002-12-02 | 2004-07-02 | Sumitomo Light Metal Ind Ltd | Aluminum alloy sheet for aluminum can barrel with screw |
| JP2004250790A (en) * | 2003-01-31 | 2004-09-09 | Kobe Steel Ltd | Aluminum alloy sheet for bottle can |
| JP2006077310A (en) * | 2004-09-13 | 2006-03-23 | Furukawa Sky Kk | Aluminum alloy sheet superior in formability for bottle type can, and manufacturing method therefor |
| JP2006097076A (en) * | 2004-09-29 | 2006-04-13 | Kobe Steel Ltd | Aluminum-alloy sheet for bottle can, and its manufacturing method |
| JP2008057019A (en) * | 2006-09-01 | 2008-03-13 | Universal Seikan Kk | Aluminum alloy sheet for drink can and container using the same |
| EP1944384A1 (en) * | 2005-11-02 | 2008-07-16 | Kabushiki Kaisha Kobe Seiko Sho | Cold-rolled aluminum alloy sheet for bottle can with excellent neck part formability and process for producing the cold-rolled aluminum alloy sheet |
| JP2009242831A (en) * | 2008-03-28 | 2009-10-22 | Kobe Steel Ltd | Aluminum alloy sheet for bottle can and method for producing the same |
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| JP2018061964A (en) * | 2016-10-11 | 2018-04-19 | ユニバーサル製缶株式会社 | Method for producing bottle can |
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| JP2004183035A (en) * | 2002-12-02 | 2004-07-02 | Sumitomo Light Metal Ind Ltd | Aluminum alloy sheet for aluminum can barrel with screw |
| JP2004250790A (en) * | 2003-01-31 | 2004-09-09 | Kobe Steel Ltd | Aluminum alloy sheet for bottle can |
| JP2006077310A (en) * | 2004-09-13 | 2006-03-23 | Furukawa Sky Kk | Aluminum alloy sheet superior in formability for bottle type can, and manufacturing method therefor |
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| EP1944384A1 (en) * | 2005-11-02 | 2008-07-16 | Kabushiki Kaisha Kobe Seiko Sho | Cold-rolled aluminum alloy sheet for bottle can with excellent neck part formability and process for producing the cold-rolled aluminum alloy sheet |
| JP2008057019A (en) * | 2006-09-01 | 2008-03-13 | Universal Seikan Kk | Aluminum alloy sheet for drink can and container using the same |
| JP2009242831A (en) * | 2008-03-28 | 2009-10-22 | Kobe Steel Ltd | Aluminum alloy sheet for bottle can and method for producing the same |
| JP2012110906A (en) * | 2010-11-22 | 2012-06-14 | Daiwa Can Co Ltd | Method for production of can cylindrically thinned in thickness at trunk |
| US10315242B2 (en) | 2014-10-15 | 2019-06-11 | Ball Metalpack, Llc | Apparatus and method for simultaneously forming a contoured shoulder and neck portion in a closed end of a metallic container |
| US10239648B2 (en) | 2014-10-28 | 2019-03-26 | Ball Metalpack, Llc | Apparatus and method for forming a cup with a reformed bottom |
| JP2018061964A (en) * | 2016-10-11 | 2018-04-19 | ユニバーサル製缶株式会社 | Method for producing bottle can |
| WO2019026898A1 (en) * | 2017-07-31 | 2019-02-07 | 東洋製罐株式会社 | Can manufacturing method, can manufacturing device, can, and can manufacturing tool set |
| JP2019025541A (en) * | 2017-07-31 | 2019-02-21 | 東洋製罐株式会社 | Can manufacturing method, can manufacturing apparatus, can, and can manufacturing tool set |
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