JPH0516935A - Thin metal container with excellent deformation resistance and decorative effect - Google Patents
Thin metal container with excellent deformation resistance and decorative effectInfo
- Publication number
- JPH0516935A JPH0516935A JP3164676A JP16467691A JPH0516935A JP H0516935 A JPH0516935 A JP H0516935A JP 3164676 A JP3164676 A JP 3164676A JP 16467691 A JP16467691 A JP 16467691A JP H0516935 A JPH0516935 A JP H0516935A
- Authority
- JP
- Japan
- Prior art keywords
- container
- structural unit
- unit surface
- constituent unit
- polyhedron
- 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.)
- Granted
Links
Landscapes
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は耐変形性及び装飾効果に
優れた薄肉金属容器に関するるものであり、より詳細に
は内容物を充填し、加熱殺菌を行ったとき或いは開封を
行ったときの耐変形性や、表面印刷による装飾効果に優
れた薄肉金属容器に関する。本発明は、飲料、とくに加
熱殺菌を用する低酸性飲料を主体とする食料品の充填密
封に有用な薄肉金属容器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin metal container having excellent deformation resistance and decorative effect, and more specifically, when the contents are filled and heat sterilized or opened. The present invention relates to a thin metal container having excellent deformation resistance and a decorative effect by surface printing. TECHNICAL FIELD The present invention relates to a thin-walled metal container useful for filling and sealing beverages, particularly food products mainly composed of low-acidic beverages for heat sterilization.
【０００２】[0002]
【従来の技術】低酸性飲料用金属容器では加熱した内容
物を充填密封し、レトルト殺菌を行っている。レトルト
殺菌を行った容器は減圧状態となることにより減圧レト
ルト法と称されるが、この減圧レトルト法ではレトルト
殺菌時に通常２ｋｇ／ｃｍ2 程度の外圧が作用すること
になり、金属容器はこれに耐えられるものが要求され
る。2. Description of the Related Art In a metal container for low-acid beverages, heated contents are filled and sealed, and retort sterilization is performed. A container that has undergone retort sterilization is called a reduced pressure retort method because it is in a reduced pressure state. In this reduced pressure retort method, an external pressure of about 2 kg / cm 2 is usually applied during retort sterilization, and a metal container is subject to this. What can withstand is required.
【０００３】以上のような減圧レトルト殺菌処理では、
金属容器の薄肉化を図るには限界がある。近年、内容物
の充填時に液体窒素を同時に充填密封し、金属容器内を
常に陽圧状態に保ってレトルト処理する陽圧レトルト
法、またはレトルト時の容器内圧の変動に合わせて外圧
を制御する等差圧レトルト法などの採用により金属容器
の薄肉化が図られている。さらに、内容物と容器とを別
々に殺菌処理を行い、無菌状態にて殺菌された容器に殺
菌された内容物を充填するいわゆる無菌充填法が近年紙
容器を中心に採用されており、その無菌充填法の採用に
より、金属容器の薄肉化を図ることが出来る。この無菌
充填法では、金属容器内圧が−０．６ｋｇ／ｃｍ2 程度
以下の減圧状態から２ｋｇ／ｃｍ2程度以下の陽圧状態
にて使用される。In the above-mentioned vacuum retort sterilization treatment,
There are limits to how thin the metal container can be made. In recent years, a positive pressure retort method that fills and seals liquid nitrogen at the same time when filling the contents and keeps the metal container in a positive pressure state for retort processing, or controls the external pressure according to the fluctuation of the container internal pressure during retort, etc. The metal container has been made thinner by adopting the differential pressure retort method or the like. Furthermore, the so-called aseptic filling method, in which the contents and the container are separately sterilized and the sterilized contents are filled in the sterilized container in an aseptic state, has been adopted mainly in paper containers in recent years. By adopting the filling method, it is possible to reduce the thickness of the metal container. In the aseptic filling process, the metal container internal pressure is used at positive pressure condition of not more than about 2 kg / cm 2 from the reduced pressure of about -0.6kg / cm 2.
【０００４】従来、薄肉金属容器の補強手段として、容
器の側壁に周方向にビードを形成させることが知られて
いる。ビード加工法により耐圧性を向上させることは可
能であるが、そのためには比較的深いビードを多段に入
れる必要がある。しかし、多段のビード加工を施した容
器では、容器側壁の印刷画面がゆがむ、或いは見えにく
い等の問題点が生じ、美的感覚上実際の容器に殆ど採用
されていないのが現状である。Conventionally, as a reinforcing means for a thin metal container, it has been known to form a bead in a circumferential direction on a side wall of the container. Although it is possible to improve the pressure resistance by the bead processing method, it is necessary to insert relatively deep beads in multiple stages for that purpose. However, in the case of a container subjected to multi-stage beading, there are problems that the printed screen on the side wall of the container is distorted or it is difficult to see, and it is the aesthetic sense that it is rarely used in actual containers.
【０００５】また、種々の目的で容器側壁に多面体壁を
形成することが知られている。例えば、特開昭５３−１
４３４８５号公報及び特開昭５４−７１０号公報に見ら
れる提案は、缶体の側壁に刻線や凹凸を設けることによ
り、缶体の手による屈曲や圧潰を容易にするというもの
であり、耐変形性の向上とは全く逆のものである。It is also known to form a polyhedral wall on the side wall of a container for various purposes. For example, JP-A-53-1
The proposals found in Japanese Patent Laid-Open No. 43485 and Japanese Patent Application Laid-Open No. 54-710 are to make the side wall of the can body scribed or uneven to facilitate bending and crushing of the can body by hand. This is the opposite of the improvement in deformability.
【０００６】さらに、特開昭６３−１７８９３３号公報
での提案は、容器側壁に膨出許容部と、これが膨出した
後での減圧変形を防止する強化部を設けたもので、本発
明が改善を意図する耐変形性とは別のものと認められ
る。Further, the proposal in Japanese Patent Laid-Open No. 178933/1988 is to provide a bulge-allowing portion on the side wall of the container and a strengthening portion for preventing a reduced pressure deformation after the bulge. It is recognized as being different from the deformation resistance intended for improvement.
【０００７】[0007]
【発明が解決しようとする問題点】金属容器を薄肉化し
た場合、第１に開缶時および開缶後の保形性に問題が生
ずる。すなわち、容器を把持して蓋の開封を行った時あ
るいは開封後に容器の剛性が不足し、感覚的に不安定さ
を感じ、或いは極端な場合には容器が変形して内容物が
溢れ出す現象が生じる。たとえば容器の素材が表面処理
鋼板の場合、その板厚が０．１２ｍｍ以下になると保形
性の不足が顕著となり、上記の問題が生ずる恐れがあ
る。When the thickness of the metal container is reduced, the first problem is the shape retention during and after opening the can. That is, when the container is grasped and the lid is opened, or after the opening, the rigidity of the container is insufficient, and the sense is unstable, or in extreme cases, the container deforms and the contents overflow. Occurs. For example, in the case where the material of the container is a surface-treated steel plate, when the plate thickness is 0.12 mm or less, insufficient shape retention becomes remarkable, and the above problem may occur.
【０００８】第２に、減圧状態にて無菌充填した薄肉金
属容器においては、減圧による容器の変形が問題とな
る。たとえば容器の素材が表面処理鋼板の場合、その板
厚が０．１２ｍｍ以下になると金属容器内圧が−０．５
ｋｇ／ｃｍ2程度の減圧状態では缶胴が座屈変形を生じ
る。Secondly, in a thin metal container that is aseptically filled in a depressurized state, deformation of the container due to depressurization becomes a problem. For example, when the material of the container is a surface-treated steel plate, when the plate thickness is 0.12 mm or less, the metal container internal pressure is -0.5.
When the pressure is reduced to about kg / cm 2 , the can body undergoes buckling deformation.
【０００９】従来の提案にみられる手段は何れも、上記
問題の解決にほど遠いものであり、更に包装容器の美観
を損なわず、商品価値を向上させるという目的に対して
も未だ満足し得るものではない。[0009] None of the means found in the conventional proposals is far from the solution to the above problems, and further, they are still satisfactory for the purpose of improving the commercial value without impairing the aesthetics of the packaging container. Absent.
【００１０】本発明者らは、薄肉化された金属容器に、
以下に詳細に説明する特定の多面体壁構造を導入する
と、容器の保形性及び耐減圧性が著しく向上し、且つ装
飾効果にも優れることを見いだした。The present inventors have added a thin metal container to
It was found that when a specific polyhedral wall structure, which will be described in detail below, is introduced, the shape retention and pressure resistance of the container are significantly improved and the decorative effect is also excellent.
【００１１】すなわち、本発明の目的は、容器側壁が著
しく薄肉化されていながら、耐変形性に優れており、容
器を把持して蓋の開封を行った時にも内容物の膨出を生
じることがなく、容器の素材コストが低減され、容器自
体が軽量化され且つ容器の廃棄処理も容易な薄肉金属容
器を提供することにある。That is, an object of the present invention is that the side wall of the container is extremely thin, but it is excellent in deformation resistance, and the contents bulge even when the container is gripped and the lid is opened. It is an object of the present invention to provide a thin metal container in which the material cost of the container is reduced, the container itself is lightweight, and the container can be easily disposed of.
【００１２】本発明の他の目的は、缶外面が多面体に基
づく特異な立体感と美観を備え、さらに印刷効果を損な
うことのない薄肉金属容器を提供することにある。Another object of the present invention is to provide a thin-walled metal container whose outer surface has a unique three-dimensional appearance and aesthetics based on a polyhedron and which does not impair the printing effect.
【００１３】[0013]
【問題を解決するための手段】本発明によれば、缶胴の
少なくとも一部に周状多面体壁が形成され、該多面体壁
は構成単位面と、構成単位面同士が接する境界稜線及び
境界稜線同士が交わる交叉部を有し、該境界稜線及び交
叉部は構成単位面に比べて相対的に容器外側に凸となっ
ており、構成単位面は対向する交叉部間で滑らかに窪ん
だ部分を有し、構成単位面の周方向に隣合った容器軸方
向配列が位相差をなしており、且つ構成単位面の窪んだ
部分は式
「数１」５ｔ≦Ｒ≦ｒ
式中、ｔは缶胴の厚み（ｍｍ）、ｒは缶胴の半径（ｍ
ｍ）、Ｒは曲率半径（ｍｍ）である、を満足する曲率半
径を有することを特徴とする耐変形性及び装飾効果に優
れた薄肉金属容器が提供される。According to the present invention, a circumferential polyhedron wall is formed on at least a part of a can body, and the polyhedron wall has structural unit surfaces, and boundary ridge lines and boundary ridge lines at which the structural unit surfaces are in contact with each other. The intersection ridge intersects with each other, and the boundary ridge and the intersection are relatively convex to the outside of the container as compared with the constitutional unit surface, and the constitutional unit surface has a smoothly recessed portion between the opposing intersections. And the container axial direction array adjacent to the circumferential direction of the constitutional unit surface has a phase difference, and the recessed portion of the constitutional unit surface is expressed by the formula “Equation 1” 5t ≦ R ≦ r, where t is a can Body thickness (mm), r is the radius of the can body (m
m) and R are radiuses of curvature (mm), a thin metal container excellent in deformation resistance and decorative effect is provided.
【００１４】本発明では、前記構成単位面の容器軸方向
の最大長さをＬとし、構成単位面の缶周方向の最大巾を
ｗとしたとき、Ｌ及びｗが式
「数２」０．２≦Ｌ／ｗ≦４
の関係を満たすことが好ましく、また構成単位面の周方
向最大巾を与える交叉点間対角線と構成単位面の軸方向
最大長さを与える交叉点間対角線との距離（両対角線を
それぞれ直角に結ぶ線の長さ）をｄ0 及びこの線が構成
単位面と交わる位置と構成単位面の軸方向最大長さを与
える交叉点間対角線との距離をｄ1 としたとき、ｄ1 は
ｄ0 の関係で次式
「数３」０．５≦ｄ1 ／ｄ0 ≦２
を満足する範囲内にあることが望ましい。In the present invention, when the maximum length of the structural unit surface in the container axial direction is L and the maximum width of the structural unit surface in the can circumferential direction is w, L and w are expressed by the formula "Equation 2" 0. It is preferable to satisfy the relationship of 2 ≦ L / w ≦ 4, and the distance between the diagonal line between crossing points that gives the maximum circumferential width of the constituent unit surface and the diagonal line between crossing points that gives the maximum axial length of the constituent unit surface ( When the length of the line that connects both diagonal lines at right angles) is d 0 and the distance between the position where this line intersects the structural unit surface and the diagonal line between crossing points that gives the maximum axial length of the structural unit surface is d 1. , d 1 is preferably within a range satisfying the following equation "number 3" 0.5 ≦ d 1 / d 0 ≦ 2 in relation to d 0.
【００１５】[0015]
【作用】容器を構成する金属素材を薄肉化することは、
素材コストを低減させ、容器自体を軽量化し且つ容器の
廃棄処理も容易にするために重要な課題であるが、本発
明では、器壁金属素材をこの様に著しく薄肉化しながら
優れた保形性、耐圧変形性、装飾効果を達成するため
に、容器胴部の少なくとも一部に以下に述べる特定の周
状多面体壁を形成する。[Function] To reduce the thickness of the metal material forming the container,
Although it is an important issue to reduce the material cost, reduce the weight of the container itself, and facilitate the disposal of the container, in the present invention, the shape-retaining property of the container wall metal is excellent while being extremely thin as described above. In order to achieve the pressure-resistant deformation property and the decorative effect, a specific circumferential polyhedron wall described below is formed on at least a part of the container body.
【００１６】この周状多面体壁は、構成単位面と、構成
単位面同士が接する境界稜線及び境界稜線同士が交わる
交叉部からなる。構成単位面とは、周状多面体壁の軸方
向（容器高さ方向）及び周方向に反復して現れる単位面
であり、この面は以下に詳細に説明する屈曲面からな
る。構成単位面相互は、軸方向及び周方向に境界稜線を
介して接しており、この境界線同士が交わる位置に交叉
部、即ち頂点が存在する。The circumferential polyhedron wall is composed of constituent unit surfaces, boundary ridge lines where the constituent unit surfaces are in contact with each other, and intersecting portions where the boundary ridge lines intersect each other. The constituent unit surface is a unit surface repeatedly appearing in the axial direction (container height direction) and the circumferential direction of the circumferential polyhedron wall, and this surface is a curved surface described in detail below. The constituent unit surfaces are in contact with each other in the axial direction and the circumferential direction via a boundary ridge line, and an intersecting portion, that is, an apex exists at a position where the boundary lines intersect.
【００１７】本発明では、境界稜線及び交叉部を構成単
位面に比べて相対的に容器外側に突出させ且つこれと合
い補うように構成単位面を対向する交叉部間で滑らかに
容器内側に窪ましたこと及び構成単位面の周方向に隣合
った容器軸方向配列を位相差をなした配列としたことが
重要な特徴である。In the present invention, the boundary ridges and the intersections are projected toward the outside of the container relative to the constitutional unit surfaces, and the constitutional unit surfaces are smoothly recessed toward the inside of the container so as to complement the protrusions. It is an important feature that the arrangement in the container axial direction adjacent to each other in the circumferential direction of the structural unit surface is an arrangement having a phase difference.
【００１８】周状多面体壁の上記配置では、周方向及び
軸方向の任意の方向に、境界稜線及び交叉部から成る凸
部と、構成単位面の滑らかな凹部とが必ず交互になるよ
うな配置、即ち凸部−凹部−凸部−凹部といった繰り返
し配置となる。しかも、これらの凸部及び凹部は、構成
単位面がガッチリしかも隙間無しに噛み合って形成され
ているため、金属素材が薄肉であるにもかかわらず、器
壁の変形に対する抵抗が著しく大きいものとなってい
る。薄肉金属容器の場合、ビードのような屈曲部が小さ
く、しかも方向性のあるものでは、補強効果は殆ど認め
られないが、本発明の配置では、屈曲部（凹部及び凸
部）が構成単位面間に形成されているため大きな構造と
なっており、しかもどの方向にも繰り返しが現れ、方向
性がないため、優れた保形性、耐減圧変形性及び装飾効
果が得られるものである。In the above arrangement of the circumferential polyhedron walls, the convex portions composed of the boundary ridge lines and the intersecting portions and the smooth concave portions of the constituent unit surfaces are always alternated in any direction in the circumferential direction and the axial direction. That is, the arrangement is repeated such that the convex portion-the concave portion-the convex portion-the concave portion. Moreover, these convex portions and concave portions are formed such that the structural unit surfaces are firmly meshed with each other with no gaps, so that the resistance against the deformation of the vessel wall is extremely large even though the metal material is thin. ing. In the case of a thin metal container, if the bent portion such as a bead is small and has directionality, the reinforcing effect is hardly recognized, but in the arrangement of the present invention, the bent portion (concave portion and convex portion) has a structural unit surface. Since it is formed between them, it has a large structure, and since it appears repeatedly in any direction and there is no directionality, it is possible to obtain excellent shape retention, resistance to reduced pressure deformation and decorative effect.
【００１９】缶胴側壁へ上記多面体パターンを加工した
本発明の金属容器は特異な立体感と美観とを備えてお
り、装飾効果に優れているという特徴を有する。容器に
多面体パターンを設ける場合、突出した部分よりもむし
ろ窪んだ部分が装飾効果に重大な影響をもたらすことが
わかった。即ち窪みが深く屈折した部分があると、この
部分が陰影となり易く、表面の印刷画像等を見ずらく
し、装飾効果を低下させ、美観を損なうものとなるが、
本発明の多面体パターンにおいては、構成単位面が対向
する交叉部間で容器内側に滑らかに窪んでいるため、構
成単位面はごく平面に近い滑らかな形状となり、しかも
構成単位面の規則正しい組合せが装飾効果を高めるもの
である。The metal container of the present invention in which the above-mentioned polyhedron pattern is processed on the side wall of the can body has a unique three-dimensional effect and aesthetic appearance, and is characterized by an excellent decorative effect. It has been found that when a container is provided with a polyhedral pattern, the recesses rather than the protrusions have a significant effect on the decorative effect. That is, if the dent has a deeply refracted portion, this portion is likely to become a shadow, which makes it difficult to see the printed image on the surface, reduces the decorative effect, and impairs the aesthetic appearance.
In the polyhedron pattern of the present invention, since the constituent unit surfaces are smoothly recessed inside the container between the intersecting portions facing each other, the constituent unit surfaces have a smooth shape close to a very flat surface, and a regular combination of constituent unit surfaces is decorated. It enhances the effect.
【００２０】本発明者らは、局部圧縮強度測定法により
金属容器の保形性を評価すると共に、耐減圧変形性を測
定した。その結果、缶胴側壁へ上記多面体パターンを加
工した本発明の金属容器は優れた保形性及び耐減圧変形
性を有することが判明した。The present inventors evaluated the shape retention of the metal container by the local compressive strength measuring method and also measured the reduced pressure deformation resistance. As a result, it was found that the metal container of the present invention in which the above-mentioned polyhedron pattern was processed on the side wall of the can body had excellent shape retention and reduced pressure deformation resistance.
【００２１】本発明では、構成単位面の窪んだ部分は
「数１」を満足する曲率半径を有することが、装飾効
果、保形性及び耐減圧変形性の点で重要である。即ち、
上記構成単位面の窪みの曲率半径Ｒは５ｔ（ｔは缶壁の
板厚）以上であり、缶胴の半径ｒ以下であることが装飾
効果、保形性、耐減圧変形性上重要である。窪みの曲率
半径Ｒが缶壁の板厚ｔの５倍を下回る場合、その窪みに
加工時の折れ目が形成され、装飾効果上好ましくない。
窪みの曲率半径Ｒが缶胴の半径ｒを上回る場合、一つの
構成単位面におけるごく平面に近い部分の面積が小さく
なり、装飾性の好ましい効果が薄れることになる。In the present invention, it is important that the recessed portion of the structural unit surface has a radius of curvature that satisfies "Equation 1" from the viewpoint of decorative effect, shape retention and resistance to reduced pressure deformation. That is,
The radius of curvature R of the depression of the above-mentioned structural unit surface is 5t or more (t is the plate thickness of the can wall), and it is important for the decorative effect, shape retention, and resistance to reduced pressure deformation that the radius r of the can body is less than or equal to r. . When the radius of curvature R of the depression is less than 5 times the plate thickness t of the can wall, a fold during processing is formed in the depression, which is not preferable for the decorative effect.
When the radius of curvature R of the depression exceeds the radius r of the can body, the area of a portion of one structural unit surface that is close to a very flat surface becomes small, and the favorable effect of decorativeness is diminished.
【００２２】窪みの曲率半径Ｒが缶壁の板厚ｔの５倍を
下回る場合、その窪みに加工時の折れ目が形成される
が、保形性の評価の際の局部圧縮時にその折れ目にて折
れ込む様に比較的容易に変形を生じるため、保形性上好
ましくない。一方、窪みの曲率半径Ｒが缶胴の半径ｒを
上回る場合、窪みの深さが浅くなり局部的な変形抵抗力
が小さくなるため好ましくない。When the radius of curvature R of the depression is less than 5 times the plate thickness t of the can wall, a fold during processing is formed in the depression, but the fold is generated during local compression during shape retention evaluation. Since it is relatively easily deformed like being folded at, it is not preferable in terms of shape retention. On the other hand, when the radius of curvature R of the depression exceeds the radius r of the can body, the depth of the depression becomes shallow and the local deformation resistance becomes small, which is not preferable.
【００２３】耐減圧変形性の点で、本発明の多面体パタ
ーンを構成する構成単位面の窪みの曲率半径Ｒは缶胴の
半径ｒ以下で有ることが好ましく、特に好ましくは０．
６ｒ以下である。窪みの曲率半径Ｒが缶胴の半径ｒを上
回る場合、窪みの深さが浅くなり、有効な耐減圧変形性
を保持することが難しくなる。From the viewpoint of resistance to reduced pressure deformation, it is preferable that the radius of curvature R of the depression of the constituent unit surface constituting the polyhedron pattern of the present invention be equal to or less than the radius r of the can body, particularly preferably 0.
It is 6r or less. When the radius of curvature R of the depression exceeds the radius r of the can body, the depth of the depression becomes shallow, and it becomes difficult to maintain effective vacuum deformation resistance.
【００２４】本発明の缶胴における凹部、凸部の繰り返
し構造では、多面体壁形成前の容器胴表面積と多面体壁
形成後の容器胴表面積とを実質的にほぼ等しく保ちなが
ら成形が可能なため、塗膜の損傷が発生することなく、
優れた耐腐食性が維持され、加工後に残留する応力も少
なく、レトルト殺菌やその後の経時に於ける被膜密着性
の経時的低下も有効に解消される。With the repeating structure of the concave portion and the convex portion in the can body of the present invention, molding can be performed while keeping the surface area of the container body before forming the polyhedral wall and the surface area of the container body after forming the polyhedral wall substantially equal. Without the damage of the coating film,
The excellent corrosion resistance is maintained, the residual stress after processing is small, and the retort sterilization and the deterioration of coating adhesion with the passage of time thereafter are effectively eliminated.
【００２５】本発明において、前記構成単位面の容器軸
方向の最大長さＬと、構成単位面の缶周方向の最大巾を
ｗとは、「数２」の関係を満たすことが、本発明の目的
に望ましく、特にIn the present invention, the maximum length L of the structural unit surface in the axial direction of the container and the maximum width w of the structural unit surface in the circumferential direction of the can satisfy the relation of "Equation 2". Desirable for the purpose of
【数４】０．５≦Ｌ／ｗ≦２
の範囲にあるのがよい。Ｌ／Ｗが上記範囲をはずれる
と、保形性、耐減圧変形性が劣ってくる。Ｌ／ｗの値は
缶径と缶高との比率を考慮したデザイン上の観点から上
記範囲内にて適時決めることが出来る。## EQU00004 ## It is preferable that 0.5.ltoreq.L / w.ltoreq.2. When L / W deviates from the above range, the shape retention and the resistance to vacuum deformation deteriorate. The value of L / w can be appropriately determined within the above range from the viewpoint of design considering the ratio between the can diameter and the can height.
【００２６】また、構成単位面の周方向最大巾を与える
交叉点間対角線と構成単位面の軸方向最大長さを与える
交叉点間対角線との距離（両対角線をそれぞれ直角に結
ぶ線の長さ）をｄ0 及びこの線が構成単位面と交わる位
置と構成単位面の軸方向最大長さを与える交叉点間対角
線との距離をｄ1 としたとき、ｄ1 はｄ0 の関係で「数
３」を満足する範囲内にあることが望ましい。ｄ1 ／ｄ
0 が上記範囲を下回ると保形性及び耐減圧変形性の点で
劣るようになる。ｄ1 ／ｄ0 が上記範囲を上回ると、多
面体パターンの成形が難しくなり、また装飾効果の点で
劣ってくる。Further, the distance between the diagonal line between the crossing points which gives the maximum width in the circumferential direction of the structural unit surface and the diagonal line between the crossing points which gives the maximum axial length of the structural unit surface (the length of the line connecting the two diagonal lines at right angles to each other). ) when was the d 0 and the distance between the diagonal between crossover points this line giving the maximum axial length of the position and the structural unit face intersecting the structural unit face and d 1, "the number of relationships d 1 is d 0 It is desirable to be within the range that satisfies “3”. d 1 / d
When 0 is less than the above range, the shape retention and the reduced pressure deformation resistance are poor. When d 1 / d 0 exceeds the above range, it becomes difficult to form a polyhedral pattern, and the decorative effect is deteriorated.
【００２７】（基本構造及び形状）本発明の薄肉金属容
器の一例を示す図１において、（Ａ）はこの容器の側面
図、（Ｂ）は部分側面断面図及び（Ｃ）は水平断面図で
ある。この容器１０は、金属素材の絞り加工或いは絞り
しごき加工で形成された上部開口の側壁部６及び閉塞底
部７と上端に巻締めにより設けられた蓋体８とから成っ
ている。この胴部１０には、周状に多面体壁が形成され
ており、この多面体壁は、構成単位面１と、構成単位面
同士が接する境界稜線２及び境界稜線同士が交わる交叉
部３を有し、該境界稜線２及び交叉部３は構成単位面に
比べて相対的に容器外側に凸、構成単位面１の対向する
交叉部間の部分５は相対的に容器内側に凹となってい
る。またこの多面体壁では、構成単位面１の隣合った容
器軸方向配列が位相差をなした配列とされている。(Basic Structure and Shape) In FIG. 1 showing an example of the thin metal container of the present invention, (A) is a side view of the container, (B) is a partial side sectional view, and (C) is a horizontal sectional view. is there. This container 10 is composed of a side wall portion 6 of an upper opening formed by drawing or drawing and ironing a metal material, a closed bottom portion 7 and a lid body 8 which is provided at the upper end by winding. A polyhedral wall is formed in a circumferential shape on the body portion 10. The polyhedral wall has a structural unit surface 1, a boundary ridge line 2 where the structural unit surfaces contact each other, and a crossing portion 3 where the boundary ridge lines intersect with each other. The boundary ridge line 2 and the crossing portion 3 are relatively convex to the outside of the container as compared with the structural unit surface, and the portions 5 between the facing crossing portions of the structural unit surface 1 are relatively concave to the inside of the container. Further, in this polyhedron wall, the adjacent arrangements of the constituent unit surfaces 1 in the axial direction of the container are arranged with a phase difference.
【００２８】この具体例において、構成単位面１は、四
辺形（菱形）ａｂｃｄ（図２参照）から成っており、構
成単位面１の周方向に隣合った容器軸方向配列が丁度１
／２の位相差をなして配列されている。In this embodiment, the constitutional unit surface 1 is composed of a quadrilateral (diamond) abcd (see FIG. 2), and the container axial direction array adjacent to the constitutional unit surface 1 in the circumferential direction is just 1.
They are arranged with a phase difference of / 2.
【００２９】図２は構成単位面の説明図であって、
（Ａ）は構成単位面の平面図であり、（Ｂ）、（Ｃ）及
び（Ｄ）、窪みの曲率半径Ｒとの関係で構成単位面の中
央部の垂直断面を示す図である。図２（Ａ）は図１の容
器胴部に使用される多面体壁面の四辺形単位面１の一例
を取り出して示したものであり、菱形ａｂｃｄが構成単
位面１となっている。菱形における各辺ａｂ、ｂｃ、ｃ
ｄ、ｄａは容器側面に形成される境界稜線２に相当する
辺であり、外向きに凸となる頂点ａ、ｂ、ｃ、ｄが交叉
部３に該当する。FIG. 2 is an explanatory view of the structural unit surface,
(A) is a plan view of a structural unit surface, and (B), (C) and (D), and is a view showing a vertical cross section of the central portion of the structural unit surface in relation to the curvature radius R of the depression. FIG. 2A shows an example of the quadrilateral unit surface 1 of the polyhedral wall used in the container body of FIG. 1, and the rhombus abcd is the constituent unit surface 1. Each side ab, bc, c in the diamond
d and da are sides corresponding to the boundary ridgeline 2 formed on the side surface of the container, and the vertices a, b, c, and d that are convex outward correspond to the intersection 3.
【００３０】側壁が円筒の場合、上方頂点ａと下方頂点
ｃとは同一径の円周面上に位置しており、左方頂点ｂと
右方頂点ｄとは同一径の円周面上に位置している。配列
が１／２の位相差をなしている場合、全ての頂点は同一
径の円周面上に位置しており、図１（Ｃ）に示す通り、
これら頂点に対応する容器胴部内半径は、最大半径ｒで
ある。一方、各稜線ａｂ、ｂｃ、ｃｄ、ｄａは端で径外
方に最も突出しているが、中間に行くに従って容器中心
軸からの距離、即ち径が減少するようになっている。周
方向の対角線ｂｄの中点の径ｓをとると、この径ｓはｒ
よりも小さく、図１（Ｃ）の場合、最小内半径を与え
る。容器胴上の単位面を軸方向に投影したとき、頂点ａ
ｃは重なるが、軸方向の対角線ａｃは、周方向の対角線
ｂｄとは重ならずに対角線ｂｄよりも径外方向に位置し
ており、四辺形ａｂｃｄは滑らかに湾曲した面となって
いる。When the side wall is a cylinder, the upper apex a and the lower apex c are located on the circumferential surface having the same diameter, and the left apex b and the right apex d are on the circumferential surface having the same diameter. positioned. When the array has a phase difference of 1/2, all the vertices are located on the circumferential surface of the same diameter, and as shown in FIG.
The inner radius of the container body corresponding to these vertices is the maximum radius r. On the other hand, each of the ridge lines ab, bc, cd, and da projects most radially outward at the end, but the distance from the center axis of the container, that is, the diameter, decreases as it goes to the middle. If the diameter s of the midpoint of the diagonal line bd in the circumferential direction is taken, this diameter s is r
And the minimum inner radius is given in the case of FIG. 1 (C). When the unit surface on the container body is projected in the axial direction, the vertex a
Although c overlaps, the diagonal line ac in the axial direction does not overlap the diagonal line bd in the circumferential direction and is located radially outward of the diagonal line bd, and the quadrangle abcd has a smoothly curved surface.
【００３１】図２の（Ａ）において、構成単位面として
の菱形寸法は、周方向対角線ｂｄの長さをｗとし、軸方
向対角線ａｃの高さをＬとすると、ｗ及びＬはそれぞれ
構成単位面の周方向最大巾及び軸方向の最大長さとな
る。軸方向対角線の長さａｃ（高さＬ）に比して、実際
の構成単位面上のａｃ断面での長さは長く、このａｃ断
面は容器内側に滑らかに窪んだ曲線となっている。構成
単位面のａｃ断面の長さは、窪みの曲率半径Ｒ＝５ｔ
（図２（Ｂ））、Ｒ＝０．３ｒ（図２（Ｃ））、Ｒ＝ｒ
（図２（Ｄ））が大きくなるに従って、短くなる。In FIG. 2A, the rhombic dimensions as the structural unit surface are w and L respectively, where w is the length of the circumferential diagonal line bd and L is the height of the axial diagonal line ac. The maximum width in the circumferential direction and the maximum length in the axial direction of the surface. The length in the ac cross section on the actual constituent unit surface is longer than the length ac (height L) of the diagonal line in the axial direction, and this ac cross section is a curve smoothly recessed inside the container. The length of the ac cross section of the structural unit surface is the curvature radius of the depression R = 5t
(FIG. 2 (B)), R = 0.3r (FIG. 2 (C)), R = r
As (FIG. 2 (D)) becomes larger, it becomes shorter.
【００３２】各構成単位面において、周方向対角線ｂｄ
の長さ（ｗ）と実際の構成単位面上のｂｄ断面での長さ
とが異なる場合がある。例えば、図１の（Ｃ）では、周
方向対角線ｂｄと実際の構成単位面上のｂｄ断面とが一
致していて、それらの長さが等しいが、この断面におけ
る辺の中点は周方向対角線ｂｄの位置よりも径外方向に
位置していたり、径内方向に位置している場合がある。On each of the constituent unit planes, the diagonal line bd in the circumferential direction
(W) may differ from the actual length in the bd cross section on the constituent unit surface. For example, in FIG. 1C, the circumferential diagonal line bd and the bd cross section on the actual constituent unit plane match and their lengths are equal, but the midpoint of the side in this cross section is the circumferential diagonal line. It may be located radially outward or radially inward of the position of bd.
【００３３】図１及び図２に示す例では、ａｃ断面が滑
らかに湾曲しており、ｂｄ断面は実質上ストレートであ
るが、他の具体例を示す図３においては、ａｃ断面もｂ
ｄ断面も共に内方に滑らかに窪むように湾曲している。In the examples shown in FIGS. 1 and 2, the ac cross section is smoothly curved, and the bd cross section is substantially straight, but in FIG. 3 showing another specific example, the ac cross section is also b.
The d cross section is also curved so as to be smoothly depressed inward.
【００３４】また、本発明においては、構成単位面は四
辺形、特に菱形であることが好ましいが、これに限定さ
れず、他の多角形とする事も勿論可能であり、例えば六
角形とすることができる。図４は構成単位面が六角形で
あるである例を示す。この場合も、多面体の基本的構成
は、前述した場合と同様である。Further, in the present invention, the constituent unit surface is preferably a quadrilateral, particularly a rhombus, but it is not limited to this, and can of course be another polygon, for example, a hexagon. be able to. FIG. 4 shows an example in which the structural unit surface is a hexagon. Also in this case, the basic structure of the polyhedron is the same as that described above.
【００３５】多面体パターンは、容器胴部のほぼ全面に
設けることが好ましいが、容器の中央部にのみ設けるよ
うにすることもできる。図５は、多面体壁を容器胴部の
中央部に設けた例を示す。The polyhedron pattern is preferably provided on substantially the entire surface of the container body, but it may be provided only on the central part of the container. FIG. 5 shows an example in which a polyhedron wall is provided at the center of the container body.
【００３６】本発明における多面体壁構造は、円筒形の
容器胴部のみならず、テーパ状の容器胴部にも、広く適
用することができる。図６は、カップ状容器の側面図で
ある。この容器では、多面体壁の内で最も径外方向に突
出している交叉部３が円筒面ではなく、テーパ面上に位
置しており、且つ構成単位面に関して、周方向配列では
同一形状、同一サイズが維持されるが、軸方向配列で
は、サイズが上部から底部に行くに従って、小さくなっ
ているが、相似形の関係は維持されている。その他の形
状及び配列の因子は、円筒形の場合と同様である。テー
パ状容器におけるテーパ角度は、一般に１乃至３０度、
特に５乃至１０度の範囲にあるのが好ましい。The polyhedral wall structure of the present invention can be widely applied not only to a cylindrical container body but also to a tapered container body. FIG. 6 is a side view of the cup-shaped container. In this container, the intersecting portion 3 protruding most radially outward in the polyhedron wall is located not on the cylindrical surface but on the taper surface, and the structural unit surfaces have the same shape and the same size in the circumferential arrangement. However, in the axial arrangement, the size decreases from the top to the bottom, but a similar relationship is maintained. The other shape and arrangement factors are the same as in the case of the cylindrical shape. The taper angle in a tapered container is generally 1 to 30 degrees,
In particular, it is preferably in the range of 5 to 10 degrees.
【００３７】（製造法）本発明は、金属素材（樹脂との
積層体も含む）等を筒状に成形し、対向する端線部を溶
接、接着或いはハンダ付け等の手段で接合して側面継ぎ
目付き容器胴部を成形し、この容器胴部の両端を天地蓋
と巻締し、或いは蓋とヒートシールした所謂スリーピー
ス容器や、金属素材或いはその積層体を有底容器胴部、
即ちカップに絞り成形或いは絞りしごき成形に付し、こ
の有底容器胴部の上端に蓋を巻締して成る所謂ツーピー
ス容器に適用することができる。(Manufacturing method) In the present invention, a metal material (including a laminated body with a resin) or the like is formed into a cylindrical shape, and the end lines facing each other are joined by means such as welding, bonding or soldering to form a side surface. A so-called three-piece container in which a seamed container body is molded, and both ends of this container body are fastened to the top and bottom lids, or heat-sealed with the lid, or a metal material or a laminate thereof is a bottomed container body,
That is, it can be applied to a so-called two-piece container in which a cup is subjected to drawing or drawing and ironing, and a lid is wound around the upper end of the bottomed container body.
【００３８】本発明の容器は、蓋を取り付ける前の容器
胴部を、内型と外型とで型押して前記多面体を形成する
ことにより製造される。使用する内型は、前記多面体の
交叉部及び稜線に対応する突起を表面に有するものであ
り、一方使用する外型は、前記多面体の窪みに対応する
滑らかな突起を表面に有するものであり、これらの内型
及び外型を容器胴部を介して噛み合わせることにより、
多面体の形成が行われる。The container of the present invention is manufactured by forming the polyhedron by pressing the container body before attaching the lid with the inner mold and the outer mold. The inner mold used has a projection corresponding to the intersections and ridges of the polyhedron on the surface, while the outer mold used has a smooth projection corresponding to the depression of the polyhedron on the surface, By engaging these inner mold and outer mold through the container body,
Polyhedron formation is performed.
【００３９】図７は、容器胴部への多面体刻設の方法を
示す説明図であり、理解が容易なように容器胴部の一部
を切り欠いた状態で示してある。この例では構成単位面
が四辺形の場合を示すが、構成単位面が四辺形以外の場
合でも原理的にこれと変わりがない。容器胴部１０は内
型１１及び外型１２に挟まれた状態で回転される。内型
１１の表面には、多面体の交叉部に対応した突起１３及
び境界稜線に対応した突条１４と、構成単位面に対応す
る窪んだ凹面１５とが形成されている。一方、外型１２
の表面には、多面体の交叉部及び境界稜線に対応した溝
１６と、構成単位面に対応する凸面１７とが形成されて
いる。FIG. 7 is an explanatory view showing a method of engraving a polyhedron on the body of the container, with a part of the body of the container cut away for easy understanding. In this example, the case where the constitutional unit surface is a quadrangle is shown, but even if the constitutional unit surface is other than a quadrangle, there is no difference in principle from this. The container body 10 is rotated while being sandwiched between the inner mold 11 and the outer mold 12. On the surface of the inner mold 11, a projection 13 corresponding to the intersection of the polyhedron, a ridge 14 corresponding to the boundary ridge, and a concave concave surface 15 corresponding to the structural unit surface are formed. On the other hand, the outer mold 12
Grooves 16 corresponding to the intersections and boundary ridges of the polyhedron and convex surfaces 17 corresponding to the structural unit surfaces are formed on the surface of the.
【００４０】これらの内型１１と外型１２とを容器胴部
１０を介して噛み合わせ、且つこれらを同期した速度で
回転させることにより、容器胴部への多面体の刻設が行
われる。尚、回転に際して一部に噛み合わせがずれる場
合には内型或いは外型の回転軸が若干上下動するように
してもよい。The inner mold 11 and the outer mold 12 are meshed with each other via the container body 10 and are rotated at a synchronized speed, thereby engraving a polyhedron on the container body. Incidentally, when a part of the meshes is misaligned during the rotation, the inner or outer rotating shaft may be slightly moved up and down.
【００４１】図７に示す具体例において、内型１１及び
外型１２は、容器胴部１０よりも小さい径を有している
が、内型１１と外型１２の表面における基本面構成単位
の周方向への配置数は容器胴部周囲のそれに比べて１個
或いは複数個少ないものとしているが、実用上多面体の
形成には問題はない。内型１１と外型１２とを離すこと
により、多面体刻設容器胴部の取り出しが容易に行われ
る。In the specific example shown in FIG. 7, the inner mold 11 and the outer mold 12 have smaller diameters than the container body 10, but the inner surface of the inner mold 11 and the outer mold 12 are the basic plane constituent units. The number of arrangement in the circumferential direction is one or more smaller than that around the body of the container, but there is no problem in forming a polyhedron in practical use. By separating the inner mold 11 and the outer mold 12, the polyhedron carved container body can be easily taken out.
【００４２】（金属素材）本発明は、胴部の厚みが０．
１２ｍｍ以下の薄肉化金属容器に適用される。絞りしご
き缶では、最も薄肉化された胴部の厚みが０．１２ｍｍ
以下であればよい。缶胴の薄肉化の要請は、金属素材の
コスト低下、廃棄処理の容易化、省資源化の点で絶えざ
るものであるが、本発明はこれらの要請に答えるもので
ある。(Metallic material) In the present invention, the thickness of the body is 0.
It is applied to thin metal containers of 12 mm or less. In the squeezed and ironed can, the thinnest barrel has a thickness of 0.12 mm.
The following is acceptable. The demand for thinning the can body is inevitable in terms of cost reduction of metal materials, easy disposal, and resource saving, and the present invention meets these demands.
【００４３】金属素材としては各種表面処理鋼やアルミ
ニウム等の軽金属が使用される。表面処理鋼としては、
冷圧延鋼板乃至箔に、亜鉛メッキ、錫メッキ、ニッケル
メッキ、電解クロム酸処理、クロム酸処理等の表面処理
の一種叉は二種以上行なったものや、最終圧延に先立っ
て前記メッキ処理を行い、次いで冷間圧延処理を行って
得られる表面処理板乃至箔を用いることができる。好適
な表面処理鋼の一例は、電解クロム酸処理鋼箔であり、
特に１０乃至２００mg/m 2 の金属クロム層と１乃至５
０mg/m 2 （金属クロム換算）のクロム酸化物層とを備
えたものであり、このものは塗膜密着性と耐腐食性との
組み合わせに優れている。表面処理鋼の他の例は、0.5
乃至11.2g/m 2 の錫メッキ量を有する軟質乃至硬質ブリ
キ板乃至箔である。このブリキは金属クロム換算で0.5
乃至100mg／m 2 のクロム酸叉はクロム酸／リン酸処理
が行われていることが望ましい。As the metal material, various surface-treated steels and light metals such as aluminum are used. As surface treated steel,
Cold-rolled steel sheet or foil that has been subjected to one or more surface treatments such as zinc plating, tin plating, nickel plating, electrolytic chromic acid treatment, chromic acid treatment, or the above-mentioned plating treatment before final rolling. Then, a surface-treated plate or foil obtained by subsequently performing a cold rolling treatment can be used. An example of a suitable surface treated steel is electrolytic chromic acid treated steel foil,
Especially 10 to 200 mg / m 2 of metallic chromium layer and 1 to 5
It is provided with a chromium oxide layer of 0 mg / m 2 (calculated as metallic chromium), which is excellent in the combination of coating film adhesion and corrosion resistance. Another example of surface treated steel is 0.5
It is a soft or hard tin plate or foil having a tin plating amount of 11.2 g / m 2 . This tinplate is 0.5 in terms of metallic chromium
It is desirable that chromic acid or chromic acid / phosphoric acid treatment of 100 to 100 mg / m 2 is performed.
【００４４】軽金属としては、所謂純アルミニウムの他
にアルミニウム合金が使用される。耐腐食性と加工性と
の点で優れたアルミニウム合金は、Mn:0.2乃至1.5重量
％、Mg:0.8乃至5重量％、Zn:0.25乃至0.3重量％、Cu:0.
15乃至0.25重量％、残部がAlの組成を有するものであ
る。これらの軽金属も、金属クロム換算で、クロム量が
３乃至300mg／m 2 となるようなクロム酸処理或いはク
ロム酸／リン酸処理が行われることが望ましい。As the light metal, in addition to so-called pure aluminum, an aluminum alloy is used. Aluminum alloy excellent in terms of corrosion resistance and workability, Mn: 0.2 to 1.5 wt%, Mg: 0.8 to 5 wt%, Zn: 0.25 to 0.3 wt%, Cu: 0.
It has a composition of 15 to 0.25% by weight and the balance being Al. These light metals are also preferably subjected to chromic acid treatment or chromic acid / phosphoric acid treatment so that the amount of chromium becomes 3 to 300 mg / m 2 in terms of metal chromium.
【００４５】本発明では、多面体パターン刻設に先立っ
た何れかの段階或いは多面体パターン刻設後に、金属素
材或いは容器に樹脂の保護被覆を施すことができる。保
護被覆の形成は、保護塗料を設けることにより、或いは
熱可塑性樹脂フィルムをラミネートすることにより行わ
れる。In the present invention, the metal material or the container can be provided with a protective coating of resin at any stage prior to engraving the polyhedron pattern or after engraving the polyhedron pattern. The protective coating is formed by providing a protective coating or laminating a thermoplastic resin film.
【００４６】保護塗料としては、熱硬化性及び熱可塑性
樹脂からなる任意の保護塗料：例えばフェノール−エポ
キシ塗料、アミノ−エポキシ塗料等の変性エポキシ塗
料：例えば塩化ビニル−酢酸ビニル共重合体、塩化ビニ
ル−酢酸ビニル共重合体部分ケン化物、塩化ビニル−酢
酸ビニル−無水マレイン酸共重合体、エポキシ変性−、
エポキシアミノ変性−或はエポキシフェノール変性−ビ
ニル塗料等のビニルまたは変性ビニル塗料：アクリル樹
脂系塗料：スチレン−ブタジエン系共重合体等の合成ゴ
ム系塗料等の単独または２種以上の組合せが使用され
る。As the protective coating, any protective coating composed of thermosetting and thermoplastic resins: modified epoxy coating such as phenol-epoxy coating, amino-epoxy coating and the like: vinyl chloride-vinyl acetate copolymer, vinyl chloride, etc. -Partially saponified vinyl acetate copolymer, vinyl chloride-vinyl acetate-maleic anhydride copolymer, epoxy modified-,
Epoxyamino-modified or epoxyphenol-modified vinyl such as vinyl paint or modified vinyl paint: Acrylic resin-based paint: Styrene-butadiene-based copolymer or other synthetic rubber-based paint, etc., alone or in combination of two or more. It
【００４７】これらの塗料は、エナメル或はラッカー等
の有機溶媒溶液の形で、或は水性分散液または水溶液の
形で、ローラ塗装、スプレー塗装、浸漬塗装、静電塗
装、電気泳動塗装等の形で金属素材に施す。勿論、前記
樹脂塗料が熱硬化性の場合には、必要により塗料を焼付
ける。保護塗膜は、耐腐食性と加工性との見地から、一
般に２乃至３０μｍ、特に３乃至２０μｍの厚み（乾燥
状態）を有することが望ましい。また、加工性を向上さ
せるために、塗膜中に、各種滑剤を含有させておくこと
ができる。These paints are used in the form of an organic solvent solution such as enamel or lacquer, or in the form of an aqueous dispersion or aqueous solution, such as roller coating, spray coating, dip coating, electrostatic coating, electrophoretic coating and the like. Shaped on metal material. Of course, when the resin paint is thermosetting, the paint is baked if necessary. From the viewpoint of corrosion resistance and workability, the protective coating film preferably has a thickness (dry state) of generally 2 to 30 μm, particularly 3 to 20 μm. Further, in order to improve the processability, various lubricants can be contained in the coating film.
【００４８】ラミネートに用いる熱可塑性樹脂フィルム
としては、ポリエチレン、ポリプロピレン、エチレン−
プロピレン共重合体、エチレン−酢酸ビニル共重合体、
エチレン−アクリルエステル共重合体、アイオノマー等
のオレフィン系樹脂フィルム：ポリエチレンテレフタレ
ート、ポリブチレンテレフタレート、エチレンテレフタ
レート／イソフタレート共重合体等のポリエステルフィ
ルム：ナイロン６、ナイロン６，６、ナイロン１１、ナ
イロン１２等のポリアミドフィルム：ポリ塩化ビニルフ
ィルム：ポリ塩化ビニリデンフィルム等を挙げることが
できる。これらのフィルムは未延伸のものでも、二軸延
伸のものでもよい。その厚みは、一般に３乃至５０μ
ｍ、特に５乃至４０μｍの範囲にあることが望ましい。
フィルムの金属素材への積層は、熱融着法、ドライラミ
ネーション、押出コート法等により行われ、フィルムと
金属箔との間に接着性（熱融着性）が乏しい場合には、
例えばウレタン系接着剤、エポキシ系接着剤、酸変性オ
レフィン樹脂系接着剤、コポリアミド系接着剤、コポリ
エステル系接着剤を介在させることができる。The thermoplastic resin film used for lamination includes polyethylene, polypropylene, ethylene-
Propylene copolymer, ethylene-vinyl acetate copolymer,
Olefin-based resin films such as ethylene-acrylic ester copolymers and ionomers: Polyester films such as polyethylene terephthalate, polybutylene terephthalate, ethylene terephthalate / isophthalate copolymers: nylon 6, nylon 6,6, nylon 11, nylon 12, etc. Polyamide film: polyvinyl chloride film: polyvinylidene chloride film. These films may be unstretched or biaxially stretched. Its thickness is generally 3 to 50 μ
m, particularly preferably in the range of 5 to 40 μm.
Lamination of the film on the metal material is performed by a heat fusion method, dry lamination, an extrusion coating method, or the like, and when the adhesiveness (heat fusion property) between the film and the metal foil is poor,
For example, a urethane adhesive, an epoxy adhesive, an acid-modified olefin resin adhesive, a copolyamide adhesive, or a copolyester adhesive can be interposed.
【００４９】[0049]
【実施例】本発明を次の例でより詳細に説明する。なお
実施例中の測定は次の通り行った。The invention is explained in more detail in the following examples. The measurements in the examples were performed as follows.
【００５０】（耐減圧変形性の測定）耐減圧変形性は、
図８に示す装置を用いて、容器内部の減圧により、容器
の永久変形が生じる圧力を測定することにより行う。即
ち、容器１０を配管２０を介して、減圧発生装置２１に
接続すると共に、圧力変換機２２を介して圧力表示装置
２３に接続し、容器１０の減圧の程度を減圧発生装置２
１で調節し、容器の永久変形が生じる圧力を圧力表示装
置２３で読みとる。(Measurement of Decompression Resistance to Decompression) Decomposition resistance to decompression is
The apparatus shown in FIG. 8 is used to measure the pressure at which permanent deformation of the container occurs due to the reduced pressure inside the container. That is, the container 10 is connected to the pressure reducing device 21 via the pipe 20, and is also connected to the pressure display device 23 via the pressure converter 22 to determine the degree of pressure reduction of the container 10 to the pressure reducing device 2.
The pressure which causes permanent deformation of the container is read by the pressure display device 23.
【００５１】（保形性の測定）図９は、保形性の評価に
使用する局部圧縮強度測定法を説明する側面図である。
容器１０を、平坦なアンビル２４上に、押圧すべき部分
がほぼ水平になるように載せ、先端に、直径５ｍｍ、長
さ２２ｍｍの先部が平坦な硬度約５０のラバー製の圧子
２５を取り付けた荷重計２６で缶或いはカップ１０の中
央部を押圧する。その時の変形量・荷重曲線のピーク荷
重を局部圧縮強度とした。ここで押圧すべき部分が水平
とは、缶の中心軸が水平であり、テーパ状のカップの場
合は、押圧すべきテーパ状側壁の部分が水平となってい
ることを意味している。(Measurement of Shape Retaining Property) FIG. 9 is a side view for explaining a local compressive strength measuring method used for evaluating shape retaining property.
The container 10 is placed on a flat anvil 24 such that the portion to be pressed is substantially horizontal, and a rubber indenter 25 having a diameter of 5 mm and a length of 22 mm and a flat tip of about 50 and having a hardness of about 50 is attached to the tip. The load meter 26 presses the central portion of the can or cup 10. The peak load of the deformation amount / load curve at that time was defined as the local compressive strength. Here, that the portion to be pressed is horizontal means that the central axis of the can is horizontal, and in the case of a tapered cup, the portion of the tapered side wall to be pressed is horizontal.
【００５２】実施例１
板厚０．０８ｍｍの電解クロム酸処理鋼箔の両面に、厚
さ０．０２ｍｍの二軸延伸ポリエステルフィルムを熱融
着法によりラミネートした材料を用いて絞り、再絞り加
工により半径ｒを２２．５ｍｍ、容器高さ８０ｍｍの容
器胴部を成形した。この容器胴部に、図１及び２に示す
最小構成単位面を、容器高の中心を含み、円周方向に９
個連続させ、且つ容器軸方向に１／２位相差で６０ｍｍ
幅で設け、Ｌ／Ｗを０．９６、深さ比ｄ1 ／ｄ0 を０．
９５、構成単位面の窪み曲率Ｒを５ｔとなるように外面
体を図７に示した押し具を用いて形成し、上端に蓋を巻
締めた。この容器胴部の保形性能を調べる目的で、図９
に示した装置を用いて局部圧縮強度を測定したところ
４．８Ｋｇと高い値を示し、官能試験による評価値２．
０Ｋｇを十分満足した。次にこの容器胴部の耐減圧性能
を調べる目的で、図８に示した装置を用いて容器胴部が
永久変形を起こす容器内圧力を測定したところ、−０．
８２Ｋｇ／ｃｍ2 と高い減圧度を示し、耐減圧の基準値
−０．６Ｋｇ／ｃｍ2 を十分満足した。またこの容器胴
部は、表面に施された印刷の細部が、多面体の刻設によ
って読み取り難くなることもなく、特異な立体感のある
美観を有しており、加工の無い円筒状の容器と比べても
装飾効果において全く遜色がなかった。保形性、耐減圧
性、装飾効果を評価した結果を表１に示す。Example 1 A sheet of 0.08 mm-thick electrolytically chromic acid treated steel foil was laminated on both sides with a 0.02 mm-thick biaxially stretched polyester film by a heat fusion method, and drawn and redrawn. By using, a container body having a radius r of 22.5 mm and a container height of 80 mm was formed. In this container body, the minimum constitutional unit surface shown in FIGS. 1 and 2 is included in the circumferential direction, including the center of the container height.
60mm with half phase difference in the axial direction of the container
The width is set to L / W of 0.96 and the depth ratio d 1 / d 0 of 0.
95, the outer surface body was formed using the pressing tool shown in FIG. 7 so that the concave curvature R of the structural unit surface was 5 t, and the lid was wound around the upper end. For the purpose of investigating the shape retention performance of this container body, FIG.
When the local compressive strength was measured using the device shown in FIG. 2, it showed a high value of 4.8 Kg, and the evaluation value by the sensory test was 2.
0 kg was sufficiently satisfied. Next, for the purpose of investigating the decompression resistance performance of this container body, the pressure inside the container which causes permanent deformation of the container body was measured using the apparatus shown in FIG.
82 kg / cm 2 and showed a high degree of reduced pressure was sufficiently meeting the standard -0.6Kg / cm 2 of resistant vacuum. In addition, this container body has a unique three-dimensional aesthetic appearance without the printing details on the surface becoming difficult to read due to the engraving of the polyhedron, and is a cylindrical container without processing. Even in comparison, the decorative effect was not inferior. Table 1 shows the results of evaluation of shape retention, decompression resistance and decorative effect.
【００５３】実施例２
実施例２は、図１及び２に示す構成単位面を、深さ比ｄ
1 ／ｄ0を０．８７、構成単位面の窪み曲率Ｒを０．３
ｒとなるようにした以外は実施例１と同様にして構成単
位面を持つ容器胴部を成形した。この容器を用いて実施
例１と同様に保形性、耐減圧性、装飾効果を評価した。
局部圧縮強度を測定したところ ５．０Ｋｇ以上の値を
示し、保形性の評価値２．０Ｋｇを十分満足した。ま
た、耐減圧性も耐減圧の基準値−０．６Ｋｇ／ｃｍ2 を
十分満足した。さらに、この容器の構成単位面の窪み曲
率Ｒが０．３ｒであることが、特に優れた立体感のある
美観を有しており、加工の無い円筒状の容器と比べて装
飾効果に優れていることが確かめられた。その結果を表
１に示す。Example 2 In Example 2, the structural unit surface shown in FIGS.
1 / d 0 is 0.87, and the concave curvature R of the structural unit surface is 0.3
A container body having a constitutional unit surface was molded in the same manner as in Example 1 except that r was set. Using this container, shape retention, decompression resistance and decorative effect were evaluated in the same manner as in Example 1.
When the local compressive strength was measured, it showed a value of 5.0 kg or more, sufficiently satisfying the shape retention evaluation value of 2.0 kg. Further, the decompression resistance sufficiently satisfied the decompression resistance standard value of −0.6 Kg / cm 2 . Further, the concave curvature R of the constitutional unit surface of this container is 0.3r, which has a particularly excellent aesthetic appearance, and is superior in decorative effect as compared with an unprocessed cylindrical container. It was confirmed that The results are shown in Table 1.
【００５４】実施例３
実施例３は、図１及び２に示す構成単位面を、深さ比ｄ
1 ／ｄ0を０．７８、構成単位面の窪み曲率Ｒを０．６
ｒとなるようにした以外は実施例１と同様にして構成単
位面を持つ容器胴部を成形した。この容器を用いて実施
例１と同様に保形性、耐減圧性、装飾効果を評価した。
保形性、耐減圧性はそれぞれ評価基準を満足し、装飾効
果においても円筒状の容器と比べて遜色はなかった。そ
の結果を表１に示す。Example 3 In Example 3, the structural unit surface shown in FIGS.
1 / d 0 is 0.78 and the concave curvature R of the structural unit surface is 0.6
A container body having a constitutional unit surface was molded in the same manner as in Example 1 except that r was set. Using this container, shape retention, decompression resistance and decorative effect were evaluated in the same manner as in Example 1.
The shape retention property and the decompression resistance satisfied the evaluation criteria, respectively, and the decorative effect was comparable to that of the cylindrical container. The results are shown in Table 1.
【００５５】実施例４
実施例４は、図１及び２に示す構成単位面を、深さ比ｄ
1 ／ｄ0を０．６７、構成単位面の窪み曲率Ｒをｒとな
るようにした以外は実施例１と同様にして構成単位面を
持つ容器胴部を成形した。この容器を用いて実施例１と
同様に保形性、耐減圧性、装飾効果を評価した。保形性
は評価基準を満足したが、耐減圧性は耐減圧強度−０．
５２Ｋｇ／ｃｍ2 を示し、評価基準−０.６Ｋｇ／ｃｍ
2 を満足しなかったものの耐変形性に有効な−０．３Ｋ
ｇ／ｃｍ2 以上の減圧耐性は満足した。装飾効果におい
ては、円筒状の容器と比べて多少劣っていた。その結果
を表１に示す。Example 4 In Example 4, the structural unit surface shown in FIGS.
A container body having a structural unit surface was formed in the same manner as in Example 1 except that 1 / d 0 was 0.67 and the concave curvature R of the structural unit surface was r. Using this container, shape retention, decompression resistance and decorative effect were evaluated in the same manner as in Example 1. The shape-retaining property satisfied the evaluation criteria, but the decompression resistance was the decompression resistance −0.
It shows 52 Kg / cm 2 , and the evaluation standard is -0.6 Kg / cm.
Although not satisfying 2 , it is effective for deformation resistance -0.3K
The vacuum resistance of g / cm 2 or more was satisfied. The decorative effect was somewhat inferior to the cylindrical container. The results are shown in Table 1.
【００５６】実施例５
実施例５は板厚０．０８ｍｍの電解クロム酸処理鋼箔の
両面に、厚さ０．０２ｍｍの二軸延伸ポリエステルフィ
ルムを熱融着法によりラミネートした材料を用いて絞
り、再絞り加工により上端部半径２２．５ｍｍ、中心部
半径ｒを２１．０ｍｍ、容器高さ８０ｍｍとなるテーパ
状容器を成形した。この容器胴部に、図６に示す最小構
成単位面を、容器高の中心を含み、円周方向に１０個連
続させ、且つ容器軸方向に１／２位相差で６０ｍｍ幅で
設け、Ｌ／Ｗを０．８６、深さ比ｄ 1 ／ｄ0 を０．８
５、構成単位面の窪み曲率Ｒを０．３ｒとなるようにし
て実施例１と同様に容器胴部を成形した。この容器を用
いて実施例１と同様に保形性、耐減圧性、装飾効果を評
価した。このテーパ状容器でも、保形性、耐減圧性はそ
れぞれ評価基準を満足した。また、装飾効果においては
円筒状の容器よりも優れていた。その結果を表１に示
す。Example 5
Example 5 is an electrolytic chromic acid treated steel foil having a plate thickness of 0.08 mm.
Biaxially stretched polyester film with a thickness of 0.02 mm on both sides
Squeeze using a material that is laminated by heat fusion
By redrawing, the upper end radius is 22.5 mm, the center part
Taper with radius r of 21.0 mm and container height of 80 mm
The container was molded. This container body has the minimum structure shown in FIG.
10 unitary units in the circumferential direction including the center of container height
And with a phase difference of 1/2 in the axial direction of the container, with a width of 60 mm
Provided, L / W 0.86, depth ratio d 1 / D0 To 0.8
5. Set the concave curvature R of the structural unit surface to 0.3r
The container body was molded in the same manner as in Example 1. Use this container
As in Example 1, shape retention, decompression resistance, and decorative effect were evaluated.
I paid. Even with this tapered container, shape retention and decompression resistance
Each satisfied the evaluation criteria. Also, in terms of decorative effects
It was superior to the cylindrical container. The results are shown in Table 1.
You
【００５７】比較例１
比較例１は、図１及び２に示す構成単位面を、構成単位
面の窪み曲率Ｒをｔとなるようにした以外は実施例１と
同様にして構成単位面を持つ容器胴部を成形した。この
容器を用いて実施例１と同様にして、保形性、耐減圧
性、装飾効果を評価した。局部圧縮強度を測定したとこ
ろ評価基準値２．０Ｋｇ以下だった。これは、構成単位
面のくぼみ曲率Ｒをｔと非常に小さくし過ぎたために、
局部的な変形がし易くなってしまった。耐減圧性につい
ては、耐減圧の基準値−０．６Ｋｇ／ｃｍ2 を十分満足
した。また、装飾効果においては円筒状の容器と比べ多
少劣っていた。その結果を表１に示す。Comparative Example 1 Comparative Example 1 has a structural unit surface in the same manner as in Example 1 except that the concave unit curvature R of the structural unit surface shown in FIGS. 1 and 2 is t. The container body was molded. Using this container, shape retention, decompression resistance and decorative effect were evaluated in the same manner as in Example 1. When the local compressive strength was measured, the evaluation reference value was 2.0 kg or less. This is because the concave curvature R of the structural unit surface is made too small as t,
Local deformation became easy. Regarding the pressure resistance, the standard value of the pressure resistance of −0.6 Kg / cm 2 was sufficiently satisfied. In addition, the decorative effect was somewhat inferior to the cylindrical container. The results are shown in Table 1.
【００５８】比較例２
比較例２は、図１及び２に示す構成単位面を、深さ比ｄ
1 ／ｄ0を０．５３、構成単位面の窪み曲率Ｒを１．５
ｒとなるようにした以外は実施例１と同様にして構成単
位面を持つ容器胴部を成形した。この容器を用いて実施
例１と同様に保形性、耐減圧性、装飾効果を評価した。
保形性、耐減圧性はいずれも評価基準を下回っており、
耐変形性の効果が期待できなかった。また、装飾効果に
おいては円筒状の容器と比べ多少劣っていた。その結果
を表１に示す。Comparative Example 2 In Comparative Example 2, the structural unit surface shown in FIGS.
1 / d 0 is 0.53, and the concave curvature R of the structural unit surface is 1.5
A container body having a constitutional unit surface was molded in the same manner as in Example 1 except that r was set. Using this container, shape retention, decompression resistance and decorative effect were evaluated in the same manner as in Example 1.
Shape retention and decompression resistance are both below the evaluation criteria,
The effect of deformation resistance could not be expected. In addition, the decorative effect was somewhat inferior to the cylindrical container. The results are shown in Table 1.
【００５９】比較例３
比較例３は、図１及び２に示す構成単位面を、円周方向
に１６個連続させ、深さ比ｄ1 ／ｄ0 を０．８７、構成
単位面の窪み曲率Ｒを０．３ｒとなるようにした以外は
実施例１と同様にして構成単位面を持つ容器胴部を成形
した。この容器を用いて実施例１と同様に保形性、耐減
圧性、装飾効果を評価した。保形性、耐減圧性はいずれ
も評価基準を下回っており、耐変形性の効果が期待でき
なかった。装飾効果においては円筒状の容器と比べて遜
色はなかった。その結果を表１に示す。Comparative Example 3 In Comparative Example 3, 16 structural unit surfaces shown in FIGS. 1 and 2 are continuously arranged in the circumferential direction, the depth ratio d 1 / d 0 is 0.87, and the concave curvature of the structural unit surface is A container body having a structural unit surface was molded in the same manner as in Example 1 except that R was set to 0.3r. Using this container, shape retention, decompression resistance and decorative effect were evaluated in the same manner as in Example 1. The shape retention and vacuum resistance were both below the evaluation criteria, and the effect of deformation resistance could not be expected. In terms of decorative effect, it was comparable to the cylindrical container. The results are shown in Table 1.
【００６０】比較例４
比較例４は、図１及び２に示す構成単位面を、深さ比ｄ
1 ／ｄ0を０．５３、構成単位面の窪み曲率Ｒを１．５
ｒとなるようにした以外は実施例１と同様にして、構成
単位面を持つ容器胴部を成形しようとしたが、破胴して
成形ができなかった。Comparative Example 4 In Comparative Example 4, the structural unit surface shown in FIGS.
1 / d 0 is 0.53, and the concave curvature R of the structural unit surface is 1.5
An attempt was made to mold a container body having a structural unit surface in the same manner as in Example 1 except that the ratio was r.
【００６１】比較例５
比較例５は、図１及び２に示す構成単位面を、深さ比ｄ
1 ／ｄ0を０．５３、構成単位面の窪み曲率Ｒを１．５
ｒとなるようにした以外は実施例１と同様にして構成単
位面を持つ容器胴部を成形した。この容器を用いて実施
例１と同様にして、保形性、耐減圧性、装飾効果を評価
した。保形性、耐減圧性はそれぞれ評価基準を満足し
た。装飾効果においては、構成単位面の窪み量が大き
く、円筒状の容器と比べて劣っているという評価を得
た。その結果を表１に示す。Comparative Example 5 In Comparative Example 5, the depth ratio d was obtained by using the structural unit surface shown in FIGS.
1 / d 0 is 0.53, and the concave curvature R of the structural unit surface is 1.5
A container body having a constitutional unit surface was molded in the same manner as in Example 1 except that r was set. Using this container, shape retention, decompression resistance and decorative effect were evaluated in the same manner as in Example 1. The shape retention and the pressure reduction resistance satisfied the evaluation criteria. With respect to the decorative effect, the amount of dents on the structural unit surface was large, and it was evaluated as being inferior to the cylindrical container. The results are shown in Table 1.
【００６２】比較例６
比較例６は、実施例１と同様に板厚０．０８ｍｍを絞り
成形した半径２２．５ｍｍ、容器高さ８０ｍｍの容器に
構成単位面を形成しないもので、この容器を用いて実施
例１と同様にして、保形性、耐減圧性、装飾効果を評価
した。保形性、耐減圧性はいずれも評価基準を下回って
おり、この板厚において構成単位面を形成しない容器の
耐変形性は満足できないものである。装飾効果は、この
円筒状の容器を評価基準の対象としている。その結果を
表１に示す。Comparative Example 6 In Comparative Example 6, as in Example 1, a container having a radius of 22.5 mm and a container height of 80 mm formed by drawing a plate thickness of 0.08 mm was not formed with a structural unit surface. In the same manner as in Example 1, shape retention, decompression resistance and decorative effect were evaluated. Both the shape-retaining property and the decompression resistance are below the evaluation criteria, and the deformation resistance of a container that does not form a structural unit surface is unsatisfactory at this plate thickness. The decorative effect targets this cylindrical container as an evaluation standard. The results are shown in Table 1.
【００６３】比較例７
比較例７は、実施例１と同様に板厚０．１３ｍｍを絞り
成形した半径２２．５ｍｍ、容器高さ８０ｍｍの容器に
構成単位面を形成しないもので、この容器を用いて実施
例１と同様にして、保形性、耐減圧性、装飾効果を評価
した。保形性は評価基準を満足したが、耐減圧性は耐減
圧強度−０．４８Ｋｇ／ｃｍ2を示し、評価基準−０.６
Ｋｇ／ｃｍ2 を満足しなかったものの耐変形性に有効な
−０．３Ｋｇ／ｃｍ2 以上の耐減圧性は満足した。装飾
効果については比較例６と同様に円筒状の容器として評
価している。その結果を表１に示す。Comparative Example 7 In Comparative Example 7, a container having a radius of 22.5 mm and a container height of 80 mm formed by drawing a plate having a thickness of 0.13 mm was not formed with the structural unit surface, as in Example 1. In the same manner as in Example 1, shape retention, decompression resistance and decorative effect were evaluated. The shape-retaining property satisfied the evaluation standard, but the decompression resistance showed a decompression resistance strength of −0.48 Kg / cm 2 , and the evaluation standard of −0.6
Although it did not satisfy Kg / cm 2 , the pressure reduction resistance of −0.3 Kg / cm 2 or more, which is effective for deformation resistance, was satisfied. The decorative effect is evaluated as a cylindrical container as in Comparative Example 6. The results are shown in Table 1.
【００６４】比較例８
比較例８は、実施例１と同様に板厚０．０８ｍｍを絞り
成形した半径２２．５ｍｍ、容器高さ８０ｍｍの容器胴
部に図１０に示すマルチビード９を、容器高さの中心を
含み、容器軸方向に６０ｍｍ幅で設けた。この容器を用
いて実施例１と同様にして、保形性、耐減圧性、装飾効
果を評価した。局部圧縮強度を測定したところ５．０Ｋ
ｇ以上の値を示し、保形性の評価値２．０Ｋｇを十分満
足した。また、耐減圧性も耐減圧の基準値−０．６Ｋｇ
／ｃｍ2 を十分満足した。装飾効果においては、容器側
壁の印刷画面の歪みなどから、円筒状の容器と比べると
劣っている。その結果を表１に示す。Comparative Example 8 In Comparative Example 8, as in Example 1, a multi-bead 9 shown in FIG. 10 was placed on the body of a container having a radius of 22.5 mm and a container height of 80 mm formed by drawing a plate thickness of 0.08 mm. It was provided with a width of 60 mm in the axial direction of the container including the center of height. Using this container, shape retention, decompression resistance and decorative effect were evaluated in the same manner as in Example 1. When the local compressive strength is measured, it is 5.0K
A value of g or more was exhibited, and the shape retention evaluation value of 2.0 kg was sufficiently satisfied. Also, the decompression resistance is the standard value of decompression resistance -0.6 Kg.
/ Cm 2 was sufficiently satisfied. The decorative effect is inferior to the cylindrical container due to the distortion of the printing screen on the container side wall. The results are shown in Table 1.
【００６５】[0065]
【表１】 [Table 1]
【００６６】[0066]
【発明の効果】本発明によれば、缶胴の少なくとも一部
に周状多面体壁を形成し、この多面体壁を構成単位面
と、構成単位面同士が接する境界稜線と、境界稜線同士
が交わる交叉部とから構成し、境界稜線及び交叉部を構
成単位面に比べて相対的に容器外側に凸とし、構成単位
面を対向する交叉部間で滑らかに窪んだ部分を有するよ
うにし、構成単位面の周方向に隣合った容器軸方向配列
を位相差をなしたものとし、更に構成単位面の窪んだ部
分を、一定の曲率半径を有するものとしたことにより、
容器側壁が著しく薄肉化されていながら、耐変形性に優
れており、容器を把持して蓋の開封を行った時にも内容
物の膨出を生じることがなく、容器の素材コストが低減
され、容器自体が軽量化され且つ容器の廃棄処理も容易
な薄肉金属容器を提供することができた。また、缶外面
が多面体に基づく特異な立体感と美観を備え、さらに装
飾効果を損なうことのない薄肉金属容器が提供された。According to the present invention, a circumferential polyhedron wall is formed on at least a part of a can body, and the polyhedron wall intersects with a constituent unit surface, a boundary ridgeline where the constituent unit surfaces contact each other, and boundary ridgelines. It is composed of an intersecting portion, and the boundary ridge and the intersecting portion are convex toward the outside of the container relative to the constituent unit surface, and the constituent unit surface has a smoothly recessed portion between the facing intersecting portions. By making the container axial direction array adjacent to each other in the circumferential direction of the surface with a phase difference, and further by making the depressed portion of the constituent unit surface have a constant radius of curvature,
Even though the container side wall is significantly thinned, it has excellent resistance to deformation, and does not cause the contents to swell even when the container is gripped and the lid is opened, reducing the material cost of the container, It was possible to provide a thin metal container in which the container itself is lightened and the disposal of the container is easy. Further, there is provided a thin metal container in which the outer surface of the can has a peculiar three-dimensional effect and aesthetics based on a polyhedron and does not impair the decorative effect.
【図１】 四辺形を構成単位面とする多面体壁を設けた
容器の一例を示し、（Ａ）は側面図、（Ｂ）は縦断面図
及び（Ｃ）は水平断面図である。1A and 1B show an example of a container provided with a polyhedral wall having a quadrilateral as a unit surface, FIG. 1A is a side view, FIG. 1B is a vertical sectional view, and FIG. 1C is a horizontal sectional view.
【図２】 図１の容器の側面に形成され多面体壁の構成
単位面の一例を示し、（Ａ）は平面図、（Ｂ）、（Ｃ）
及び（Ｄ）は窪んだ部分の曲率半径を変化させて示す構
成単位面の垂直断面図である。2A and 2B show an example of constituent unit surfaces of a polyhedral wall formed on the side surface of the container of FIG. 1, (A) is a plan view, (B), (C).
3D and 3D are vertical cross-sectional views of the constituent unit surface showing the radius of curvature of the depressed portion.
【図３】 多面体壁の他の例を用いた容器の側面図であ
る。FIG. 3 is a side view of a container using another example of the polyhedron wall.
【図４】 六角形を構成単位面とする多面体壁を設けた
容器の側面図である。FIG. 4 is a side view of a container provided with a polyhedral wall having a hexagon as a unit surface.
【図５】 容器の中央部にのみ多面体壁をを形成させた
容器の側面図である。FIG. 5 is a side view of a container in which a polyhedral wall is formed only in the central portion of the container.
【図６】 テーパ状側壁に多面体壁を形成させた容器の
側面図である。FIG. 6 is a side view of a container in which a polyhedral wall is formed on a tapered side wall.
【図７】 容器胴部への多面体刻設の方法を説明する斜
視図である。FIG. 7 is a perspective view illustrating a method for engraving a polyhedron on a container body.
【図８】 耐減圧変形性の測定に使用する装置の配置図
である。FIG. 8 is a layout view of an apparatus used for measuring the reduced pressure deformation resistance.
【図９】 保形性評価のための局部圧縮強度測定法を説
明するための側面図である。FIG. 9 is a side view for explaining a local compressive strength measuring method for shape retention evaluation.
【図１０】比較のためのビード付き容器の側面図であ
る。FIG. 10 is a side view of a beaded container for comparison.
１：構成単位面 ２：境界稜線 ３：交叉部
５：窪んだ凹部 ６：側壁部 ７：底部 ８：蓋
９：ビード １０：容器胴部 １１：内型１
２：外型。1: Structural unit surface 2: Boundary ridge line 3: Crossing part
5: recessed concave portion 6: side wall portion 7: bottom portion 8: lid 9: bead 10: container body portion 11: inner mold 1
2: External type.
Claims (3)
形成され、該多面体壁は構成単位面と、構成単位面同士
が接する境界稜線及び境界稜線同士が交わる交叉部を有
し、該境界稜線及び交叉部は構成単位面に比べて相対的
に容器外側に凸となっており、構成単位面は対向する交
叉部間で滑らかに窪んだ部分を有し、構成単位面の周方
向に隣合った容器軸方向配列が位相差をなしており、且
つ構成単位面の窪んだ部分は式 【数１】５ｔ≦Ｒ≦ｒ 式中、ｔは缶胴の厚み（ｍｍ）、ｒは缶胴の半径（ｍ
ｍ）、Ｒは曲率半径（ｍｍ）である、を満足する曲率半
径を有することを特徴とする耐変形性及び装飾効果に優
れた薄肉金属容器。1. A circumferential polyhedron wall is formed on at least a part of a can body, and the polyhedron wall has structural unit surfaces, a boundary ridge line where the structural unit surfaces are in contact with each other, and an intersection portion where the boundary ridge lines intersect each other. The boundary ridges and intersections are relatively convex to the outside of the container as compared to the structural unit surface, and the structural unit surface has a portion that is smoothly recessed between the opposing intersecting portions, and is located in the circumferential direction of the structural unit surface. Adjacent containers in the axial direction form a phase difference, and the concave portion of the structural unit surface is expressed by the following equation: 5 t ≤ R ≤ r where t is the thickness of the can body (mm) and r is the can. Body radius (m
m) and R are radiuses of curvature (mm), a thin-walled metal container excellent in deformation resistance and decorative effect, which has a radius of curvature satisfying
をＬとし、構成単位面の缶周方向の最大巾をｗとしたと
き、Ｌ及びｗが式 【数２】０．２≦Ｌ／ｗ≦４ の関係を満たすことを特徴とする請求項１記載の薄肉金
属容器。2. When L is the maximum length of the constituent unit surface in the axial direction of the container and w is the maximum width of the constituent unit surface in the circumferential direction of the can, L and w are expressed by the following formula: The thin metal container according to claim 1, wherein the relationship of L / w ≦ 4 is satisfied.
点間対角線と構成単位面の軸方向最大長さを与える交叉
点間対角線との距離（両対角線をそれぞれ直角に結ぶ線
の長さ）をｄ0 及びこの線が構成単位面と交わる位置と
構成単位面の軸方向最大長さを与える交叉点間対角線と
の距離をｄ1 としたとき、ｄ1 はｄ0 の関係で次式 【数３】０．５≦ｄ1 ／ｄ0 ≦２ を満足する範囲内にあることを特徴とする請求項１また
は２記載の薄肉金属容器。3. The distance between the diagonal line between the crossing points that gives the maximum width in the circumferential direction of the structural unit surface and the diagonal line between the crossing points that gives the maximum axial length of the structural unit surface (the length of the line connecting the diagonal lines at right angles to each other). ) when was the d 0 and the distance between the diagonal between crossover points this line giving the maximum axial length of the position and the structural unit face intersecting the structural unit face and d 1, d 1 is expressed by the following equation in relation to d 0 The thin metal container according to claim 1 or 2, characterized in that it is within a range satisfying 0.5 ≦ d 1 / d 0 ≦ 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16467691A JPH075128B2 (en) | 1991-07-04 | 1991-07-04 | Thin metal container with excellent deformation resistance and decorative effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16467691A JPH075128B2 (en) | 1991-07-04 | 1991-07-04 | Thin metal container with excellent deformation resistance and decorative effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0516935A true JPH0516935A (en) | 1993-01-26 |
| JPH075128B2 JPH075128B2 (en) | 1995-01-25 |
Family
ID=15797727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16467691A Expired - Fee Related JPH075128B2 (en) | 1991-07-04 | 1991-07-04 | Thin metal container with excellent deformation resistance and decorative effect |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075128B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002200900A (en) * | 2000-12-28 | 2002-07-16 | Toyo Seikan Kaisha Ltd | Can with three-dimensional hologram |
| JP2006306500A (en) * | 2005-03-31 | 2006-11-09 | Mitsubishi Materials Corp | Can body |
| JP2007216445A (en) * | 2006-02-15 | 2007-08-30 | Dainippon Printing Co Ltd | Blank sheet having continuous polyhedral body embossed part, paper product comprising blank sheet and manufacturing method of blank sheet |
| JP2008246885A (en) * | 2007-03-30 | 2008-10-16 | Pentel Corp | Shaft cylinder |
| CN113023027A (en) * | 2019-12-09 | 2021-06-25 | 内蒙古蒙牛乳业（集团）股份有限公司 | Transparent bottle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019151281A1 (en) * | 2018-01-30 | 2019-08-08 | 東洋製罐株式会社 | Positive-pressure can |
| JP2023046747A (en) * | 2021-09-24 | 2023-04-05 | 東洋製罐株式会社 | Metal cup having stacking property |
-
1991
- 1991-07-04 JP JP16467691A patent/JPH075128B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002200900A (en) * | 2000-12-28 | 2002-07-16 | Toyo Seikan Kaisha Ltd | Can with three-dimensional hologram |
| JP2006306500A (en) * | 2005-03-31 | 2006-11-09 | Mitsubishi Materials Corp | Can body |
| JP2007216445A (en) * | 2006-02-15 | 2007-08-30 | Dainippon Printing Co Ltd | Blank sheet having continuous polyhedral body embossed part, paper product comprising blank sheet and manufacturing method of blank sheet |
| JP2008246885A (en) * | 2007-03-30 | 2008-10-16 | Pentel Corp | Shaft cylinder |
| CN113023027A (en) * | 2019-12-09 | 2021-06-25 | 内蒙古蒙牛乳业（集团）股份有限公司 | Transparent bottle |
| CN113023027B (en) * | 2019-12-09 | 2023-05-23 | 内蒙古蒙牛乳业（集团）股份有限公司 | Transparent bottle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH075128B2 (en) | 1995-01-25 |
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