JP2012162267A - Can and method for manufacturing the same - Google Patents

Can and method for manufacturing the same Download PDF

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JP2012162267A
JP2012162267A JP2009107095A JP2009107095A JP2012162267A JP 2012162267 A JP2012162267 A JP 2012162267A JP 2009107095 A JP2009107095 A JP 2009107095A JP 2009107095 A JP2009107095 A JP 2009107095A JP 2012162267 A JP2012162267 A JP 2012162267A
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lid
bending portion
tip
fitted
bending
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Japanese (ja)
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Satoshi Takahashi
聡 高橋
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Priority to JP2009107095A priority Critical patent/JP2012162267A/en
Priority to PCT/JP2009/005465 priority patent/WO2010122615A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/06—Integral, or permanently secured, end or side closures
    • B65D17/12—Closures secured by soldering, welding, or otherwise uniting opposed surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4011—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening completely by means of a tearing tab
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)

Abstract

PROBLEM TO BE SOLVED: To drink up the content without leaving any liquid residue by using a can sealed by covering the circumferential edge of a lid put on the upper circumferential edge of a barrel section, and fitting the lid according to the shapes of both circumferential edges.SOLUTION: In the can obtained by overlapping the lid and the barrel each other, an overlapping part of the lid includes a lid bent portion having a first bending pattern, and the barrel includes a barrel bent portion having a second bending pattern corresponding to the first bending pattern. The first and second bending patterns are fitted to each other, so that the barrel bent portion and the lid bent portion overlap each other.

Description

本発明は、たとえば缶及びその製造方法に係り、特に蓋と胴体とを結合して密閉する２ピース缶や３ピース缶等の缶及びその製造方法に関する。   The present invention relates to a can and a method for manufacturing the can, for example, and more particularly to a can such as a two-piece can or a three-piece can in which a lid and a body are joined and sealed, and a method for manufacturing the can.

従来の２ピース缶（ビール、炭酸飲料等）や３ピース缶（コーヒー、紅茶等）は蓋と胴体をカシメで結合していた。   Conventional 2-piece cans (beer, carbonated beverages, etc.) and 3-piece cans (coffee, tea, etc.) have their lids and trunks joined together by caulking.

たとえば、特許文献１では、缶の胴体に蓋を嵌合し、蓋の周縁部を胴体にかしめて密閉する技術的思想を開示している。   For example, Patent Document 1 discloses a technical idea in which a lid is fitted to the body of a can and the peripheral edge of the lid is caulked to the body to seal it.

また、非特許文献１では、胴体に「スーパーエンド（登録商標）」と称する蓋を被せ、従来の製缶技術同様、重ね合わさった蓋と胴体との双方の端部を二重に巻き締める技術的思想を開示している。   Further, in Non-Patent Document 1, the body is covered with a lid called “Super End (registered trademark)”, and the both ends of the overlapped lid and the body are double-wrapped like the conventional can manufacturing technology. The ideal idea is disclosed.

特開２００８−２５４７９７JP2008-254797

http://techon.nikkeibp.co.jp/article/NEWS/20060412/116028/http://techon.nikkeibp.co.jp/article/NEWS/20060412/116028/

従来の製缶技術では、上記のように、蓋と缶の胴体との周縁部を「二重巻き締め」というかしめ加工で容器を密封していたが、種々の課題や問題点があった。   In the conventional can manufacturing technique, as described above, the peripheral portion of the lid and the body of the can is hermetically sealed by “double winding”, but there are various problems and problems.

図６は、従来の製缶技術に係る「二重巻き締め」によるかしめ加工を示す状態図である。同図に示す（ａ）は缶の蓋を胴体に収めた状態の拡大断面図、（ｂ）は（ａ）の状態から二重巻き締めによるかしめ加工を施した後の状態の拡大断面図である。（ａ）に示すように、当該かしめ加工を施すためには蓋及び胴体の周縁部を湾曲状（以下、この湾曲状の周縁部を「カール部分」ともいう。）にして重なり合わせられるだけの量の材料を使用する必要があった。また、（ｂ）に示す状態にするためには、蓋の周縁部５１０が胴体の周縁部５２０を二重に巻き締めるためのかしめ加工を施す工程が必要であった。したがって、従来の製缶技術により製造された缶は、かしめ加工に伴う空間５３０及び窪み５４０を有する形状にせざるを得なかった。缶を逆さにしたとしても、この空間５３０に内容物（たとえば液体）が入りこんでしまうために、内容物が残留してしまう。また、いったん外に出されても、窪み５４０部分に入り込んだ内容物は残留してしまう。   FIG. 6 is a state diagram showing caulking by “double winding” according to a conventional can manufacturing technique. (A) shown in the figure is an enlarged cross-sectional view of a state in which the lid of the can is housed in the body, and (b) is an enlarged cross-sectional view of the state after the caulking process by double winding from the state of (a). is there. As shown in (a), in order to perform the caulking process, the peripheral portions of the lid and the body are curved (hereinafter, the curved peripheral portions are also referred to as “curl portions”) and are overlapped. The amount of material needed to be used. Further, in order to obtain the state shown in (b), it is necessary to perform a caulking process in which the peripheral edge 510 of the lid is double-wrapped around the peripheral edge 520 of the body. Therefore, the can manufactured by the conventional can manufacturing technology has been forced to have a shape having the space 530 and the depression 540 accompanying the caulking process. Even if the can is turned upside down, the contents (for example, liquid) enter the space 530, and the contents remain. Moreover, even if it goes out once, the content which entered the hollow 540 part will remain.

図７は、かしめ加工で製造された缶の内容物を摂取した後の残留液の残留状態を示す概念図である。同図に示すとおり、缶を傾けることで図示しない開口部（以下、「飲み口」或いは「切り口」ともいう。）から内容物を摂取した後に、空間５３０及び窪み５４０に残留液（図の網掛部分。ただし、液体に限られず、たとえば粉体であってもよい。以下同じ。）が発生してしまう事態を避けることができない。当該残留液は、表面張力の影響により、缶の傾き角を変えても流れず、さらに缶を振動させても完全に除去することはほとんど不可能であった。したがって、缶の内容量を全て摂取することはできなかった。また、残留液の発生により、廃棄時には当該残留液に群がる害虫等の生物を引き寄せる可能性の高い悪臭が漂うこととなり、人体にも悪影響を及ぼす可能性もあった。   FIG. 7 is a conceptual diagram showing a residual state of the residual liquid after ingesting the contents of a can manufactured by caulking. As shown in the figure, after the contents are ingested through an opening (not shown) (hereinafter also referred to as “drink” or “cut”) by tilting the can, residual liquid (shaded in the figure) is left in the space 530 and the recess 540. However, it is not limited to the liquid, but may be, for example, a powder. Due to the influence of surface tension, the residual liquid did not flow even if the inclination angle of the can was changed, and it was almost impossible to remove it completely even if the can was vibrated. Therefore, it was not possible to ingest the entire content of the can. In addition, due to the generation of the residual liquid, a bad odor with a high possibility of attracting organisms such as pests gathering in the residual liquid at the time of disposal drifts, and there is a possibility that the human body may be adversely affected.

図８は、従来の製缶技術に「スーパーエンド（登録商標）」と称する蓋（以下、単に「スーパーエンド」ともいう。）を用いた場合と比較した状態の拡大断面図である。同図に示すとおり、スーパーエンドの周縁部６１０は、従来の上蓋の周縁部５１０よりも傾斜が緩やかであるため、その分のアルミニウム等の材料使用量が削減され、従来の蓋に費やしていたアルミニウム使用量を削減するものとされる。しかしながら、この場合においても上述したかしめ加工を必要とするため、同様に空間５３０及び窪み５４０が生じ、残留液発生等の問題が解消したわけではない。   FIG. 8 is an enlarged cross-sectional view in a state compared with a case where a lid called “Super End (registered trademark)” (hereinafter also simply referred to as “Super End”) is used in the conventional can manufacturing technology. As shown in the figure, since the peripheral edge 610 of the super end has a gentler slope than the peripheral edge 510 of the conventional upper lid, the amount of material used such as aluminum is reduced and the conventional lid is spent on the conventional lid. The amount of aluminum used is supposed to be reduced. However, in this case as well, the above-described caulking process is required, so that the space 530 and the depression 540 are similarly generated, and the problem of the residual liquid generation is not solved.

このように、かしめ加工により製造された缶は、蓋と胴体との周縁部を重ねて二重に巻きつけるため高い密閉性を有するが、内容物の摂取に適した形状、廃棄に伴う環境問題、製造しやすい工程等の観点において多くの課題を有している。また、かしめ加工を適用することで、その分のアルミニウム使用量が無駄となる。   In this way, the can manufactured by caulking has a high hermeticity because the periphery of the lid and body are overlapped and wrapped twice, but the shape suitable for ingesting the contents, environmental problems associated with disposal However, it has many problems in terms of processes that are easy to manufacture. Further, by applying the caulking process, the amount of aluminum used is wasted.

本発明は、上記従来技術の問題点を解決することを企図したものであり、かしめ加工を施さずに缶の蓋と胴体とを結合して密閉性を保持し、残留液を発生させる空間や窪みを形成しないことで、アルミニウム使用量をさらに削減し、内容物の完全な摂取を可能とする缶及びその製造方法を提供することを目的とする。   The present invention is intended to solve the above-mentioned problems of the prior art, and the space between the can lid and the body is connected without holding the caulking process to maintain the sealing property and the residual liquid is generated. An object of the present invention is to provide a can that can further reduce the amount of aluminum used by not forming a dent and can completely ingest the contents, and a method for manufacturing the can.

かかる課題を解決するため、本発明は、周縁部を胴体の上部の周縁部に被せ、双方の周縁部の形状により蓋を嵌め込むことをその主な特徴とするものである。   In order to solve this problem, the main feature of the present invention is that the peripheral edge portion is placed on the peripheral edge portion of the upper portion of the body, and the lid is fitted according to the shape of both peripheral edge portions.

具体的に、本願に係る缶は、蓋と胴体とが重合されてなる缶において、前記蓋に係る重合部は第１の屈折パターンが形成される蓋屈曲部を具備し、前記胴体は前記第１の屈折パターンに対応する第２の屈折パターンが形成される胴体屈曲部を具備し、前記第１及び第２の屈折パターンが嵌合することで前記胴体屈曲部と前記蓋屈曲部とが重合される。或いは、蓋を胴体に外嵌するもので、蓋周縁部に係る蓋先端部が胴体周縁部に係る胴体屈曲部に嵌合し、当該胴体周縁部に係る胴体先端部が当該蓋周縁部に係る蓋屈曲部に嵌合し、それに伴い当該蓋周縁部と当該胴体周縁部とが密着し、さらに反作用力により蓋を抑止するものである。 Specifically, the can according to the present application is a can in which a lid and a body are polymerized, and the overlapped portion according to the lid includes a lid bending portion in which a first refraction pattern is formed, and the body includes the first body. A body bending portion in which a second refraction pattern corresponding to one refraction pattern is formed, and the body bending portion and the lid bending portion are superposed by fitting the first and second refraction patterns. Is done. Alternatively, the lid is externally fitted to the fuselage, the lid tip portion related to the lid peripheral portion is fitted to the body bent portion related to the fuselage peripheral portion, and the fuselage tip portion related to the fuselage peripheral portion is related to the lid peripheral portion. The lid is fitted to the bent portion of the lid, and accordingly, the lid peripheral edge and the body peripheral edge are in close contact with each other, and the lid is suppressed by the reaction force.

ここで、本願に係る缶は、たとえば、缶の胴体と底部が一体となった２ピース缶及び胴体、上蓋及び底蓋の３つの部分からなる３ピース缶のいずれでもよく、限定はない。また、缶の材質としては、たとえばアルミニウムやスチールを含むが、その他の材質であってもよい。さらに、缶の形状については、円柱状や直方体状でもよく、限定はない。また、缶の蓋に開口部を有する場合、たとえば缶切り等を用いて開口するもの及び缶切り等を用いずに蓋の上面に付けられたタブを引っ張るプルトップを含むが、これらに限定されるわけではない。   Here, the can according to the present application may be, for example, any of a three-piece can including a two-piece can and a trunk in which the body and bottom of the can are integrated, and an upper lid and a bottom lid. The material of the can includes, for example, aluminum and steel, but other materials may be used. Furthermore, the shape of the can may be cylindrical or rectangular parallelepiped, and is not limited. In addition, in the case where the can lid has an opening, for example, including an opening using a can opener and a pull top that pulls a tab attached to the upper surface of the lid without using a can opener, etc. Absent.

缶の蓋は、３ピース缶の場合には上蓋及び／または底蓋を示す。当該蓋は、タブ、リベット、スコア等を有する面状の部分（以下、「蓋面状部」ともいう。）及び胴体の外周部分を外嵌できる部分（以下、「蓋周縁部」ともいう。）を有する。蓋周縁部は、所定の傾斜を有し、その先端部（以下、「蓋先端部」ともいう。）は、先端に行くほど厚みが薄くなるもので、胴体屈曲部と密着したときに段差を生じない程の薄さが好ましい。また、蓋周縁部は、蓋面状部と繋がる直前で屈曲する部分（以下、「蓋屈曲部」ともいう。）を有し、たとえば、湾曲した形状、角ばった形状その他の形状を含み、角度や寸法に限定はない。   The can lid indicates a top lid and / or a bottom lid in the case of a three-piece can. The lid is also referred to as a planar portion (hereinafter also referred to as “lid surface portion”) having tabs, rivets, scores, and the like and a portion (hereinafter referred to as “lid peripheral portion”) that can be fitted around the outer peripheral portion of the body. ). The peripheral edge of the lid has a predetermined inclination, and the tip end portion (hereinafter also referred to as “lid tip end portion”) decreases in thickness as it goes to the tip end. Thinness that does not occur is preferable. The lid peripheral portion has a portion that is bent immediately before being connected to the lid surface portion (hereinafter also referred to as “lid bending portion”), and includes, for example, a curved shape, an angular shape, and other shapes. There are no limitations on dimensions.

第１の屈折パターン、第２の屈折パターンは、折曲面の断面が一定のパターンを形成し、これら第１の屈折パターン及び第２の屈折パターンが嵌め合うことができるものをいい、たとえば、波面、ギザギザ面、凹凸面等であってもよい。   The first refracting pattern and the second refracting pattern are patterns in which the cross section of the folding surface forms a constant pattern, and the first refracting pattern and the second refracting pattern can be fitted to each other. It may be a jagged surface, an uneven surface, or the like.

缶の胴体は、２ピース缶及び３ピース缶のいずれにおいても、少なくとも缶の胴体全体を形成する部分（以下、「胴体側面部」ともいう。）及び外周部分で蓋周縁部が嵌合される部分（以下、「胴体周縁部」ともいう。）を有する。胴体周縁部は、所定の傾斜を有し、その先端部（以下、「胴体先端部」ともいう。）は、先端に行くほど厚みが薄くなるもので、蓋屈曲部と密着したときに段差を生じない程の薄さが好ましい。また、胴体周縁部は、胴体側面部と繋がる直前で屈曲する部分（以下、「胴体屈曲部」ともいう。）を有し、たとえば、湾曲した形状、角ばった形状その他の形状を含み、角度や寸法に限定はない。   The body of the can is a peripheral part of the lid that fits at least a part (hereinafter also referred to as a “body side part”) that forms the entire body of the can in both the two-piece can and the three-piece can. Part (hereinafter also referred to as “body body peripheral part”). The fuselage peripheral edge has a predetermined inclination, and the tip part (hereinafter also referred to as “fuselage tip part”) decreases in thickness as it goes to the tip. Thinness that does not occur is preferable. In addition, the body peripheral portion has a portion that is bent immediately before being connected to the body side surface portion (hereinafter, also referred to as a “body bent portion”), and includes, for example, a curved shape, an angular shape, and other shapes. There is no limitation on the dimensions.

蓋先端部は胴体屈曲部に嵌合する形状を有し、胴体先端部は蓋屈曲部に嵌合する形状を有する。蓋先端部が胴体屈曲部に嵌合後は、容易に取り外しができない程度に嵌合し、密着することが好ましい。また、それにより胴体先端部が蓋屈曲部に嵌合し、その後は容易に取り外しができない程度に嵌合し、密着することが好ましい。   The lid tip has a shape that fits into the body bending portion, and the body tip has a shape that fits into the lid bending portion. After the lid tip is fitted to the body bend, it is preferable that the lid is fitted and adhered so that it cannot be easily removed. Further, it is preferable that the front end portion of the body is fitted to the lid bent portion, and then fitted to the extent that it cannot be easily removed and closely attached.

このように構成することで、蓋周縁部が胴体周縁部を覆うように外嵌・嵌合することで、蓋先端部が胴体屈曲部に嵌合して密着し、同時に胴体先端部が蓋屈曲部に嵌合して密着し、それに伴い蓋周縁部と胴体周縁部との間に隙間が生じない程度に密着する。したがって、缶の内圧が増加したときは、蓋面状部の内側に圧力が加わるため、蓋先端部と胴体屈曲部とが嵌合する部分及び胴体先端部と蓋屈曲部とが嵌合する部分とで結合力を生み、さらに反作用力が生じるため、蓋を封止することができる。   With this configuration, the lid tip is fitted and fitted so that the lid periphery covers the fuselage periphery, so that the lid tip fits into the fuselage bend, and at the same time the fuselage tip is bent. It fits into a part and adheres, and it adheres so that a clearance gap may not arise between a cover peripheral part and a body peripheral part. Therefore, when the internal pressure of the can increases, the pressure is applied to the inside of the lid surface portion, so the portion where the lid tip and the body bending portion are fitted and the portion where the body tip and the lid bending portion are fitted Since a coupling force is generated and a reaction force is generated, the lid can be sealed.

上記の構成においては、前記胴体屈曲部に延設される突端である胴体先端部は前記蓋屈曲部に内接して嵌合されるようにしてもよい。この場合さらに、前記蓋屈曲部に延設される突端である蓋先端部は前記胴体屈曲部に外接して嵌合されるようにしてもよい。   In the above-described configuration, a trunk front end portion that is a projecting end extending to the trunk bending portion may be inscribed and fitted to the lid bending portion. In this case, a lid front end portion that is a protruding end extending to the lid bending portion may be fitted to the body bending portion.

この構成によれば、蓋周縁部と胴体周縁部との間の密着度がさらに高まるため、缶の内圧が増加した際に蓋面状部の内側に圧力が加わることで、蓋先端部と胴体屈曲部とが嵌合する部分及び胴体先端部と蓋屈曲部とが嵌合する部分とで結合力を生み、さらに反作用力により蓋を封止することができるという効果をさらに増大させることができる。 According to this configuration, since the degree of adhesion between the lid peripheral portion and the trunk peripheral portion is further increased, when the internal pressure of the can is increased, pressure is applied to the inside of the lid surface portion, so that the lid tip portion and the trunk It is possible to further increase the effect of generating a coupling force between the portion where the bent portion is fitted and the portion where the body tip portion and the lid bent portion are fitted, and further, the lid can be sealed by the reaction force. .

また、上記のいずれかの構成において、前記第１の屈折パターン及び／もしくは前記第２の屈折パターンは略階段状である構成としてもよい。 In any of the above configurations, the first refraction pattern and / or the second refraction pattern may be substantially stepped.

蓋周縁側部は、蓋周縁部であって蓋先端部及び蓋屈曲部の間に存在する部分である。また、胴体周縁側部は、胴体周縁部であって胴体先端部及び胴体屈曲部の間に存在する部分である。蓋周縁側部及び胴体周縁側部は、所定の段差を有する略階段状であり、階段の数や個々の階段の角度及び寸法に限定はない。また、階段の段部は厳密に角である必要はなく、むしろ微視的には段の折曲が形成される箇所が緩やかな曲面で形成されていてよい。   The lid peripheral side portion is a peripheral portion of the lid, and is a portion existing between the lid tip portion and the lid bent portion. The body peripheral side portion is a body peripheral portion and is a portion that exists between the body front end portion and the body bent portion. The lid peripheral side and the body peripheral side are substantially stepped with a predetermined step, and there is no limitation on the number of steps and the angles and dimensions of the individual steps. Further, the step portion of the staircase does not have to be strictly an angle, but rather, a portion where the step bend is formed may be formed with a gently curved surface microscopically.

このように構成することで、蓋周縁部と胴体周縁部とが密着する際に、蓋周縁側部及び胴体周縁側部の個々の略階段部分が突合して密着する。したがって、缶の内圧が増加したときは、蓋面状部の内側に圧力が加わるため、蓋先端部と胴体屈曲部とが嵌合する部分及び胴体先端部と蓋屈曲部とが嵌合する部分とで反作用力が生じるだけでなく、さらに各階段部分で反作用力が生じるため、より蓋の抑止強度が増す構造とすることができる。   By comprising in this way, when a lid | cover peripheral part and a trunk | drum peripheral part closely_contact | adhere, each substantially step part of a lid | cover peripheral part and a trunk | drum peripheral part abuts and contacts. Therefore, when the internal pressure of the can increases, the pressure is applied to the inside of the lid surface portion, so the portion where the lid tip and the body bending portion are fitted and the portion where the body tip and the lid bending portion are fitted In addition to generating a reaction force, the reaction force is also generated at each step portion, so that the structure can further increase the deterrent strength of the lid.

また、この構成において、本願に係る缶は、前記胴体先端部を前記蓋屈曲部に嵌合させ、前記蓋先端部を前記胴体屈曲部に嵌合させる際に、シーリングコンパウンドにて封止する構成としてもよい。   Further, in this configuration, the can according to the present application is configured to be sealed with a sealing compound when the front end of the body is fitted to the bent portion of the lid and the front end of the lid is fitted to the bent portion of the body. It is good.

シーリングコンパウンドとは、蓋先端部と胴体屈曲部との嵌合部分と、胴体先端部と蓋屈曲部との嵌合部分にそれぞれ接着素材を塗布し、密封をより完全なものとする際に用いる材料である。シーリングコンパウンドは、ゴム成分、粘着付与剤、充填剤、有機過酸化物等のいずれか一つまたは複数の成分を配合した組成物からなるものでもよい。具体的には、ゴム成分としては、スチレン・ブタジエンゴム、ブタジエンゴム、天然ゴム、ニトリルゴム等を用いることが可能である。また、粘着付与剤（樹脂成分）としては、ロジン、水素添加ロジン、ロジンエステル、水素添加ロジンエステル及び硬化ロジンの様なロジン系樹脂、α−ピネン、β−ピネン、ジペンテンのようなテルペン系樹脂、フェノールホルムアルデヒド樹脂、ロジンやテルペンの様な天然樹脂で変性したフェノール樹脂、キシレンホルムア ルデヒド樹脂及びその変性樹脂、石油炭化水素系樹脂等が用いられる。充填剤としては、コロイダルシリカ、含水ケイ酸、合成ケイ酸塩、無水ケイ酸の様なシリカ系充填剤、軽質及び重質炭酸カルシウム、活性化炭酸カルシウム、カオリン、焼成クレー、タルク、アルミナホワイト、硫酸カルシウム、水酸化アルミニウム、軽石粉、ガラス粉、酸化亜鉛、二酸化チタン、カーボンブラック等が用いられる。有機過酸化物としては、１，１−ビス（ｔ−ブチルパーオキシ）２−メチルシクロヘキサン、１，１−ビス（ｔ−ヘキシルパーオキシ）−３，３，５−トリメチルシクロヘキサン、１，１−ビス（ｔ−ヘキシルパーオキシ）シクロへキサン、１，１−ビス（ｔ−ブチルパーオキシ）−３，３，５−トリメチルシクロヘキサン、１，１−ビス（ｔ−ブチルパーオキシ）シクロヘキサン、１，１−ビス（ｔ−ブチルパーオキシ）シクロドデカン、ｎ−ブチル−４，４−ビス（ｔ−ブチルパーオキシ）バレレート等のパーオキシケタール類、ｔ−ヘキシルパーオキシベンゾエート、２，５−ジメチル−２，５−ジ（ベンゾイルパーオキシ）ヘキサン、ｔ−ブチルパーオキシベンゾエート、ジ−ｔ−ブチルパーオキシイソフタレート等のパーオキシエステル類、ジクミルパーオキサイド、２，５−ジメチル−２，５−ジ（ｔ−ブチルパーオキシ）ヘキサン、ｔ−ブチルクミルパーオキサイド、ジ−ｔ−ブチルパーオキサイド、ジ（２−ｔ−ブチルパーオキシイソプロピル）ベンゼン等のアルキルパーオキサイド類等が用いられる。   The sealing compound is used to apply a sealing material to the fitting portion between the lid tip and the body bending portion and the fitting portion between the body tip and the lid bending portion, thereby making the sealing more complete. Material. The sealing compound may be composed of a composition in which any one or a plurality of components such as a rubber component, a tackifier, a filler, and an organic peroxide are blended. Specifically, styrene / butadiene rubber, butadiene rubber, natural rubber, nitrile rubber, or the like can be used as the rubber component. The tackifier (resin component) includes rosin resins such as rosin, hydrogenated rosin, rosin ester, hydrogenated rosin ester and cured rosin, and terpene resins such as α-pinene, β-pinene and dipentene. Phenol formaldehyde resins, phenol resins modified with natural resins such as rosin and terpene, xylene formaldehyde resins and modified resins thereof, petroleum hydrocarbon resins and the like are used. As fillers, colloidal silica, hydrous silicic acid, synthetic silicate, silica-based fillers such as silicic anhydride, light and heavy calcium carbonate, activated calcium carbonate, kaolin, calcined clay, talc, alumina white, Calcium sulfate, aluminum hydroxide, pumice powder, glass powder, zinc oxide, titanium dioxide, carbon black and the like are used. Examples of the organic peroxide include 1,1-bis (t-butylperoxy) 2-methylcyclohexane, 1,1-bis (t-hexylperoxy) -3,3,5-trimethylcyclohexane, 1,1- Bis (t-hexylperoxy) cyclohexane, 1,1-bis (t-butylperoxy) -3,3,5-trimethylcyclohexane, 1,1-bis (t-butylperoxy) cyclohexane, 1, Peroxyketals such as 1-bis (t-butylperoxy) cyclododecane, n-butyl-4,4-bis (t-butylperoxy) valerate, t-hexylperoxybenzoate, 2,5-dimethyl- Peroxygens such as 2,5-di (benzoylperoxy) hexane, t-butylperoxybenzoate, di-t-butylperoxyisophthalate Tellurium, dicumyl peroxide, 2,5-dimethyl-2,5-di (t-butylperoxy) hexane, t-butylcumyl peroxide, di-t-butyl peroxide, di (2-t-butyl) Alkyl peroxides such as peroxyisopropyl) benzene are used.

このように構成することで、蓋先端部と胴体屈曲部との接する面及び胴体先端部と蓋屈曲部との接する面にそれぞれシーリングコンパウンドを塗布するため、皮膜強度の向上により外的応力からの耐性が向上し、高温殺菌の際、缶の内圧が外圧より高くなり耐性が向上し、またさらに缶の内外の圧力差が平衡になろうとする際の空気や内容物による応力への耐性が向上し、密封性能も併せて向上するという顕著な効果が得られる。   By configuring in this way, the sealing compound is applied to the surface where the lid tip and the body bending part are in contact and the surface where the body tip and the lid bending part are in contact with each other. Improves resistance, improves internal resistance of cans higher than external pressure during high-temperature sterilization, and further improves resistance to stress caused by air and contents when the pressure difference between the internal and external cans is about to balance In addition, a remarkable effect that the sealing performance is also improved can be obtained.

また、上記のいずれかの構成において、前記缶は２ピース缶とし、底部を凹みドーム型にする構成とすることもできる。   In any of the above-described configurations, the can may be a two-piece can, and the bottom may be a dome shape.

底部を凹みドーム型にする構成とは、底部を外側から見ると中央部分がドーム状に突出する形状であることを示す。当該ドーム状の内径や高さ等の寸法に限定はないが、缶を直立させるために、外周部分よりも突出しないことが好ましい。   The configuration in which the bottom is recessed and formed into a dome shape indicates that the central portion has a shape protruding in a dome shape when the bottom is viewed from the outside. Although there are no limitations on dimensions such as the inner diameter and height of the dome, it is preferable that the dome does not protrude from the outer peripheral portion in order to erect the can.

このように構成することで、底部が凹みドーム型となるので、内圧増加時にドーム部分で柔軟に吸収するため、急激な缶の内圧変化にも対応することができる。また、これにより缶の容積を更に増加させることができる。   With this configuration, since the bottom portion is a concave dome shape, the dome portion absorbs flexibly when the internal pressure increases, so that it is possible to cope with a sudden change in the internal pressure of the can. This can further increase the volume of the can.

また、上記のいずれかの構成において、本願に係る缶は、前記蓋面状部に係る開口部において、当該蓋面状部の中心から最も離れたところを頂点として傾斜を持たせた構成としてもよい。   Further, in any one of the above configurations, the can according to the present application may be configured such that the opening of the lid surface-shaped portion has an inclination with the vertex farthest from the center of the lid surface-shaped portion as an apex. Good.

すなわち、蓋を水平にした場合、開口部のうち缶を傾けて内容物を摂取する部分が蓋面状部の中心から最も離れたところであり、当該部分を最も高い位置になるようにし、全体として当該開口部が傾斜になるように構成する。当該開口部の傾斜角に限定はないが、容易に内容物を摂取する角度が好ましい。   That is, when the lid is leveled, the part of the opening that inclines the can and ingests the contents is farthest from the center of the lid surface-like part, and that part is at the highest position, and as a whole The opening is configured to be inclined. Although there is no limitation on the inclination angle of the opening, an angle at which the contents are easily taken is preferable.

このように構成することで、開口部において、蓋面状部の中心から最も離れたところを頂点として傾斜が形成されるので、飲み口に人が口をつけて内容物を摂取する際は、この傾斜を伴う形状が口の形状と一致して、内容物をより摂取しやすく、残留物をこれまでよりも画期的に減少させることが可能となる。さらに、タブの取付スペースを確保すると共に、耐久性の向上を図ることができる。   By configuring in this way, in the opening, since an inclination is formed with the vertex farthest from the center of the lid surface portion, when a person puts his mouth in the drinking mouth and ingests the contents, The shape with the inclination coincides with the shape of the mouth, so that the contents can be more easily taken, and the residue can be reduced epoch-making than before. Furthermore, it is possible to secure a space for attaching the tab and improve durability.

また、上記課題を解決するために、本願に係る缶の製造方法は、天蓋の面状部に蓋先端部及び蓋屈曲部を有する蓋周縁部を連続形成させ、該蓋屈曲部に第１の屈折パターンを形成するステップと、底蓋に胴体周縁側部を立ち上げ形成し、該胴体周縁側部の遊端に胴体屈曲部及び胴体先端部を有する胴体周縁部を連続形成させ、該胴体屈曲部に第２の屈折パターンを形成するステップと、前記第１及び第２の屈折パターンが嵌合するように前記胴体屈曲部を前記蓋屈曲部に外嵌させるステップと、前記蓋先端部を前記胴体屈曲部に嵌合させ、前記胴体先端部を前記蓋屈曲部に嵌合させるステップとを具備する。或いは、蓋先端部、蓋屈曲部及び蓋周縁側部からなる蓋周縁部を有する蓋を製造するステップと、胴体先端部、胴体屈曲部及び胴体周縁側部からなる胴体周縁部を有する胴体を製造するステップと、当該蓋と当該胴体とを外嵌し、蓋先端部を胴体屈曲部に嵌合し、胴体先端部を蓋屈曲部に嵌合するステップとを有する。 In addition, in order to solve the above-described problem, a method for manufacturing a can according to the present application includes a lid peripheral portion having a lid tip portion and a lid bending portion continuously formed on a surface portion of a canopy, and the lid bending portion has a first A step of forming a refraction pattern, a body peripheral side is raised and formed on the bottom lid, and a body peripheral part having a body bent part and a body tip is continuously formed at the free end of the body peripheral side part, and the body is bent Forming a second refraction pattern on a portion, fitting the body bending portion to the lid bending portion so that the first and second refraction patterns fit, and attaching the lid tip portion to the lid bending portion. Fitting the body bending portion and fitting the body distal end portion to the lid bending portion. Alternatively, a step of manufacturing a lid having a lid peripheral portion composed of a lid tip portion, a lid bent portion, and a lid peripheral side portion, and a fuselage including a fuselage peripheral portion including a fuselage front end portion, a body bent portion, and a fuselage peripheral side portion are manufactured. And a step of externally fitting the lid and the body, fitting the lid tip portion to the body bending portion, and fitting the body tip portion to the lid bending portion.

このように構成することで、カール部分がない蓋及び胴体を製造することができ、当該蓋の蓋先端部と当該胴体の胴体屈曲部とを嵌合し、当該胴体の胴体先端部と当該蓋の蓋屈曲部とを嵌合することで、嵌合による結合力及び当該嵌合に伴う反作用力により密封性を有する缶を製造することができる。   With this configuration, it is possible to manufacture a lid and a fuselage having no curled portion. The lid tip of the lid and the fuselage bending portion of the fuselage are fitted, and the fuselage tip and the lid of the fuselage are fitted. By fitting the lid bending portion, a can having a sealing property can be manufactured by a coupling force due to the fitting and a reaction force accompanying the fitting.

本願によれば、蓋を胴体に外嵌もしくは嵌合し、蓋先端部が胴体屈曲部に嵌合し、胴体先端部が蓋屈曲部に嵌合する、いわゆる「嵌め殺し」加工により、二重巻き締めを行うかしめ加工を施す蓋及び胴体に係るカール部分は不要であるため、従来の二重巻き締めのものよりも製缶に必要な材料使用量をより削減することができる。したがって、単位数あたりの製造コストを低減することができ、環境対策にも有益となる。すなわち、ライフサイクルアセスメント（Ｌｉｆe Ｃｙｃｌｅ Ａｓｓｅｓｓｍｅｎｔ、以下、「ＬＣＡ」ともいう。）の一環として、缶のライフサイクル（原料の選定から廃棄物の処理まで）における環境への影響についての評価も向上するものとなる。缶やその製造方法等が環境に与える影響を、原料採取から設計、生産、流通、消費、廃棄に至るまでの各段階における資源・エネルギーの消費と環境負荷を定量的に分析し、総合評価することにより、環境負荷の低減及び環境改善を図る手法となり得る。したがって、本願の技術思想に係る缶やその製造方法によって、世界規模の問題であるエネルギー消費量、材料使用量、二酸化炭素の排出量、廃棄物の量等を著しく改善することは明確である。 According to the present application, the lid is externally fitted or fitted to the fuselage, the lid tip is fitted to the fuselage bending portion, and the fuselage tip is fitted to the lid bending portion, so-called “fitting killing” processing is performed. Since the curl portion for the lid and body for performing caulking is not required, it is possible to further reduce the amount of material used for making the can than the conventional double winding. Therefore, the manufacturing cost per unit number can be reduced, which is also beneficial for environmental measures. In other words, as part of Life Cycle Assessment (hereinafter also referred to as “LCA”), evaluation of environmental impacts in can life cycle (from selection of raw materials to disposal of waste) is also improved. It becomes. Quantitatively analyze and comprehensively evaluate the environmental impact of cans and their manufacturing methods by analyzing the consumption and environmental impact of resources and energy at each stage from raw material collection to design, production, distribution, consumption, and disposal. Therefore, it can be a technique for reducing environmental load and improving the environment. Therefore, it is clear that the cans according to the technical idea of the present application and the manufacturing method thereof remarkably improve the world-wide problems such as energy consumption, material usage, carbon dioxide emission, waste amount and the like.

また、ライフサイクルコスト（Ｌｉｆe Ｃｙｃｌｅ Ｃｏｓｔ、以下、「ＬＣＣ」ともいう。）の観点からすれば、結果として、購入者において缶は生産財であって商品を購入してから廃棄するまでの費用を軽減し、製造者においては企画・研究開発から材料残余分の廃棄に至るまでの経費（研究開発費、流通費、生産費、運用費、廃棄費等）を削減することができるため、本技術分野に係るＬＣＣの最適化を図ることができる。 Further, from the viewpoint of life cycle cost (hereinafter also referred to as “LCC”), as a result, the purchaser can reduce the cost from purchasing the product to discarding it. This technology enables manufacturers to reduce expenses from research / development to disposal of surplus materials (research and development costs, distribution costs, production costs, operation costs, disposal costs, etc.). It is possible to optimize LCC related to the field.

また、かしめ加工に伴う空間や窪みもなく、底部がドーム形状のため、缶全体として容積が増加することになる。すなわち、蓋の面がより高くなり、凹みドーム型の底面がより低くなるため、容量が増える。逆にいえば、同じ容積を収容するのに、胴体の全長を縮小させることができる。したがって、缶製造に要する材料を大きく削減することができる。 Moreover, since there is no space and a hollow accompanying a caulking process, and a bottom part is a dome shape, the volume as a whole can increases. That is, the surface of the lid becomes higher and the bottom surface of the recessed dome shape becomes lower, so that the capacity increases. Conversely, the overall length of the fuselage can be reduced to accommodate the same volume. Therefore, the material required for can production can be greatly reduced.

さらに、空間や窪みに残留液が滞留することなく略全ての内容物を摂取することができる。またさらに、缶のスコアを人が飲み口とする場合においても、このような形状により拭きやすくなり清潔性を保つことができるため、エチケット面においても有益である。 Furthermore, substantially all the contents can be ingested without the residual liquid remaining in the space or the depression. Furthermore, even when the score of the can is used by a person as a drinking mouth, such a shape is easy to wipe and can maintain cleanliness, which is also advantageous in terms of etiquette.

なお、蓋において蓋面状部に係る開口部において、蓋面状部の中心から最も離れたところを頂点として傾斜を持たせることで、内容物を摂取しやくすなり、残留液をより滞留させることがなくなる。したがって、従来の缶において内容量の表示値よりも多めに注入するような配慮も不要となる。また、２ピース缶において、底部を凹みドーム型にすることで、内圧変化に伴う膨張にも圧力を吸収して柔軟に対応することができ、破裂等を防止することができる。 In addition, in the opening of the lid surface portion in the lid, it is easier to ingest the contents and retain the residual liquid more by providing an inclination with the vertex farthest from the center of the lid surface portion. Nothing will happen. Therefore, it is not necessary to consider that the conventional can can be injected more than the display value of the content. Further, in the two-piece can, by making the bottom part a concave dome shape, it is possible to flexibly cope with expansion associated with a change in internal pressure, and to prevent rupture and the like.

本発明の一実施形態に係る飲料用の２ピース缶の上面の外観図である。It is an external view of the upper surface of the 2 piece can for drinks concerning one Embodiment of this invention. 本発明の一実施形態に係る飲料用の２ピース缶の全体像の断面図である。It is sectional drawing of the whole image of the two-piece can for drinks concerning one Embodiment of this invention. 本発明の一実施形態に係る飲料用の２ピース缶の底面の外観図である。It is an external view of the bottom face of a two-piece can for beverages according to an embodiment of the present invention. 本発明の一実施形態に係る蓋と胴体との結合状態を拡大した図（図１（ｂ）のＸ部分）である。It is the figure (X section of Drawing 1 (b)) which expanded the combined state of the lid and the body concerning one embodiment of the present invention. 本発明の一実施形態に係る２ピース缶の内圧変化に伴う蓋と底部とで行われる圧力調整及び蓋と胴体との結合状況を示す状態図である。It is a state figure which shows the pressure adjustment performed by the lid | cover and bottom part accompanying the internal pressure change of 2 piece can which concerns on one Embodiment of this invention, and the coupling | bonding condition of a lid | cover and a fuselage. 本発明の一実施形態に係る２ピース缶の内容物を摂取する際の内容物の流動状態を示す図である。It is a figure which shows the flow state of the content at the time of ingesting the content of the 2 piece can which concerns on one Embodiment of this invention. 本発明の一実施形態に係る２ピース缶の内容物のうち微量に残り得る残留液を摂取する際の流路を示す図である。It is a figure which shows the flow path at the time of ingesting the residual liquid which may remain in trace amount among the contents of the 2 piece can which concerns on one Embodiment of this invention. 本発明の一実施形態に係る２ピース缶の製造工程を示すフローチャートである。It is a flowchart which shows the manufacturing process of the 2 piece can which concerns on one Embodiment of this invention. 従来の製缶技術に係る「二重巻き締め」によるかしめ加工を示す状態図である。It is a state figure which shows the caulking process by the "double winding" which concerns on the conventional can manufacturing technique. かしめ加工で製造された缶の内容物を摂取した後の残留液の残留状態を示す概念図である。It is a conceptual diagram which shows the residual state of the residual liquid after ingesting the contents of the can manufactured by the caulking process. 従来の製缶技術に「スーパーエンド」と称する上蓋を用いた場合と比較した状態を断面視した拡大図である。It is the enlarged view which looked at the state compared with the case where the upper cover called "super end" was used for the conventional can manufacturing technique.

以下、図面を参照して本発明を実施するための形態について説明する。なお、以下では、本発明の目的を達成するための説明に必要な範囲を模式的に示し、本発明の該当部分の説明に必要な範囲を主に説明することとし、説明を省略する箇所については公知技術によるものとする。   Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the following, the range necessary for the description for achieving the object of the present invention is schematically shown, and the range necessary for the description of the relevant part of the present invention will be mainly described. Are according to known techniques.

図１Ａ乃至図１Ｃは、本発明の一実施形態に係る飲料用の２ピース缶１の全体像を示す図である。当該２ピース缶１は、蓋１０、胴体２０、底部３０で構成されている。図１Ａは２ピース缶１の蓋１０の上面外観図、図１Ｂは２ピース缶１の断面図、図１Ｃは２ピース缶１の底部３０の底面外観図である。   1A to 1C are views showing an overall image of a two-piece can 1 for beverages according to an embodiment of the present invention. The two-piece can 1 includes a lid 10, a body 20, and a bottom 30. 1A is a top external view of the lid 10 of the two-piece can 1, FIG. 1B is a cross-sectional view of the two-piece can 1, and FIG. 1C is a bottom external view of the bottom 30 of the two-piece can 1.

図１Ａ及び図１Ｂに示すように、蓋１０は、蓋面状部１１０と蓋周縁部１２０とを具備して構成される。   As shown in FIGS. 1A and 1B, the lid 10 includes a lid surface portion 110 and a lid peripheral edge portion 120.

蓋面状部１１０は、飲料水等の内容物を摂取するための開口部分であるスコア１１１０、スコア１１１０を開口するための力点となるタブ１１２０、タブ１１２０の動作の支点となるリベット１１３０を有する。蓋面状部１１０は、スコア１１１０から内容物を摂取する際に２ピース缶１を傾けることで内容物が流れ出る部分を頂点として所定の角度で傾斜を持たせる形状とする。こうすることで、この傾斜を伴う形状が口の形状と一致して、内容物をより摂取しやすくなる。また、タブ１１２０の取付スペースを確保すると共に、耐久性の向上を図ることができる。   The lid surface portion 110 has a score 1110 which is an opening portion for ingesting contents such as drinking water, a tab 1120 which is a power point for opening the score 1110, and a rivet 1130 which is a fulcrum for the operation of the tab 1120. . The lid surface portion 110 has a shape that is inclined at a predetermined angle with the portion where the contents flow out by tilting the two-piece can 1 when the contents are ingested from the score 1110. By doing so, the shape with the inclination coincides with the shape of the mouth, and the contents are more easily taken. In addition, it is possible to secure a mounting space for the tab 1120 and improve durability.

図２は、本発明の一実施形態に係る蓋１０と胴体２０との結合状態を拡大した図（図１ＢのＸ部分）である。蓋周縁部１２０及び後述する胴体周縁部２２０については、同図も参照しながら説明を行う。   FIG. 2 is an enlarged view (X portion in FIG. 1B) of a coupling state between the lid 10 and the body 20 according to the embodiment of the present invention. The lid peripheral edge 120 and the body peripheral edge 220 described later will be described with reference to the same drawing.

蓋周縁部１２０は、所定の傾斜を有し、蓋先端部１２１０、蓋屈曲部１２２０、蓋周縁側部１２３０を具備して構成される。蓋先端部１２１０は、好適には先端に行くほど厚みが薄くなるものであり、後述する胴体屈曲部２２２０と密着したときには段差を生じない程の薄さがさらに好ましい。こうすることで、突出部分がなくなり、あたかも蓋１０と胴体２０とが一体型となっているかのように見える。また、外力が加わることもなく、蓋１０が外れる要因にもならない。さらに、人が２ピース缶１を手に持つ場合には、より安全性が増す。蓋屈曲部１２２０は、蓋面状部１１０と繋がる直前で屈曲する部分で、所定の内径を有する湾曲形状である。蓋周縁側部１２３０は、蓋先端部１２１０と蓋屈曲部１２２０の間の部分で、所定の段差を有する略階段状に形成されるが、階段の数や個々の階段の角度及び寸法に限定はない。なお、この階段状については、微視的には曲面が部分形成され、折り曲げ部が角を形成しないのが好ましい。   The lid peripheral portion 120 has a predetermined inclination and is configured to include a lid tip portion 1210, a lid bent portion 1220, and a lid peripheral side portion 1230. The lid tip portion 1210 preferably has a thickness that decreases toward the tip, and is more preferably thin enough not to cause a step when in close contact with a body bending portion 2220 described later. By doing so, there is no protruding portion, and it looks as if the lid 10 and the body 20 are integrated. Further, no external force is applied, and it does not cause the lid 10 to come off. Further, when a person has the two-piece can 1 in his / her hand, the safety is further increased. The lid bending portion 1220 is a portion that is bent immediately before being connected to the lid surface portion 110 and has a curved shape having a predetermined inner diameter. The lid periphery side portion 1230 is a portion between the lid tip portion 1210 and the lid bent portion 1220 and is formed in a substantially staircase shape having a predetermined step. However, the number of steps and the angle and size of each step are limited. Absent. In addition, about this step shape, it is preferable that a curved surface is partially formed microscopically and a bending part does not form a corner | angular.

また、胴体２０は、胴体側面部２１０及び胴体周縁部２２０とを具備して構成されている。胴体周縁部２２０は、所定の傾斜を有し、胴体先端部２２１０、胴体屈曲部２２２０、胴体周縁側部２２３０を有して構成される。胴体先端部２２１０は、好適には先端に行くほど厚みが薄くなるものとし、蓋屈曲部１２２０と密着したときには段差を生じない程の薄さがさらに好ましい。こうすることで、内容物が滞留することもなくなる。また、人がスコア１１１０に口をつけて内容物を摂取する場合には、より安全性が増す。胴体屈曲部２２２０は、胴体側面部２１０と繋がる（或いは一体形成される）直前で屈曲する部分で、所定の内径を有する湾曲形状である。胴体周縁側部２２３０は、胴体先端部２２１０と胴体屈曲部２２２０の間の部分で、所定の段差を有する階段状であり、階段の数や個々の階段の角度及び寸法に限定はない。   The body 20 includes a body side surface portion 210 and a body periphery portion 220. The body periphery 220 has a predetermined inclination and is configured to include a body tip 2210, a body bend 2220, and a body periphery 2230. The body front end portion 2210 is preferably thinner as it goes to the front end, and it is more preferable that the body front end portion 2210 is thin enough not to cause a step when in close contact with the lid bending portion 1220. By doing so, the contents are not retained. Moreover, when a person puts a mouth on the score 1110 and ingests the contents, safety is further increased. The body bending portion 2220 is a portion that is bent immediately before being connected to (or integrally formed with) the body side surface portion 210 and has a curved shape having a predetermined inner diameter. The body periphery side part 2230 is a part between the body front end part 2210 and the body bending part 2220 and has a step shape having a predetermined step, and there is no limitation on the number of steps and the angles and dimensions of the individual steps.

図１Ｂ及び図１Ｃに示すように、底部３０は、凹みドーム部３１０、脚部３２０、底内凸部３３０を有して構成される。   As shown in FIG. 1B and FIG. 1C, the bottom portion 30 is configured to have a recessed dome portion 310, a leg portion 320, and a bottom inner convex portion 330.

凹みドーム部３１０は、底部３０を外側から見ると中央部分がドーム状に突出している部分である。ドーム部分の内径や高さ等の寸法に限定はないが、２ピース缶１を直立させるために、脚部３２０よりも突出しないことが好ましい。脚部３２０は、２ピース缶１を直立させるための部分であって、その形状は湾曲状でも角ばった形状でもいずれでもよい。底内凸部３３０は、２ピース缶１内部に突出しており、凹みドーム部３１０及び脚部３２０を設けることで形成される部分である。その形状は、湾曲状でも角ばった形状でもいずれでもよいが、２ピース缶１の内圧変化に柔軟に対応するため湾曲状とすることが好ましい。   The recessed dome portion 310 is a portion where the central portion protrudes in a dome shape when the bottom portion 30 is viewed from the outside. Although there are no limitations on the inner diameter and height of the dome portion, it is preferable that the two-piece can 1 does not protrude from the leg 320 in order to make the two-piece can 1 stand upright. The leg part 320 is a part for making the two-piece can 1 stand upright, and the shape thereof may be either curved or angular. The bottom inner convex part 330 protrudes into the two-piece can 1 and is a part formed by providing the concave dome part 310 and the leg part 320. The shape may be either a curved shape or an angular shape, but is preferably a curved shape in order to flexibly cope with a change in internal pressure of the two-piece can 1.

図２を用いて、蓋１０と胴体２０との結合させるための動作状況について、詳細な説明を行う。   With reference to FIG. 2, a detailed description will be given of an operation state for coupling the lid 10 and the body 20 together.

蓋１０は、胴体２０の上方向から被せるように外嵌して、蓋１０と胴体２０とを結合させる。このとき、蓋先端部１２１０は先端に行くほど厚みが薄く、滑らかな湾曲形状であり、かつ胴体周縁側部２２３０は図示する向きに段差を有するため、スムーズに外嵌することができる。そして、蓋先端部１２１０が胴体屈曲部２２２０に達したとき、蓋先端部１２１０は胴体屈曲部２２２０に嵌合する。したがって、蓋先端部１２１０及び胴体屈曲部２２２０の形状は、嵌合後、容易に取り外しができない程度の結合力により突合／合致することがよい。同時に、胴体先端部２２１０は蓋屈曲部１２２０に嵌合し、同様に、胴体先端部２２１０及び蓋屈曲部１２２０の形状は、嵌合後、容易に取り外しができない程度の結合力により突合／合致するのがよい。また、略階段状の蓋周縁側部１２３０と胴体周縁側部２２３０とが密着する。これにより、蓋１０と胴体２０とを結合させることができる。   The lid 10 is externally fitted so as to be covered from above the trunk 20, and the lid 10 and the trunk 20 are coupled. At this time, the lid front end portion 1210 is thinner and smoother as it goes to the front end, and the body periphery side portion 2230 has a step in the direction shown in the figure, so that it can be fitted smoothly. When the lid tip portion 1210 reaches the body bending portion 2220, the lid tip portion 1210 is fitted to the body bending portion 2220. Therefore, it is preferable that the shapes of the lid tip portion 1210 and the body bending portion 2220 collide / match with each other with a binding force that cannot be easily removed after fitting. At the same time, the fuselage tip 2210 fits into the lid bend 1220, and similarly, the shapes of the fuselage tip 2210 and the lid bend 1220 abut / match with a binding force that cannot be easily removed after fitting. It is good. Further, the substantially step-like lid peripheral side portion 1230 and the trunk peripheral side portion 2230 are in close contact with each other. Thereby, the lid | cover 10 and the trunk | drum 20 can be combined.

ここで、２ピース缶１の材料をアルミニウムにした場合の使用量削減の効果について言及する。   Here, mention is made of the effect of reducing the amount of use when the material of the two-piece can 1 is made of aluminum.

一般的に、３５０ｃｃの２ピース缶の全体重量は略１６ｇ〜１７ｇ、高さは略１２２．２ｍｍ〜１２２．７ｍｍ、蓋の重量は略３ｇ、厚さは略０．２６ｍｍ〜０．２７ｍｍ、胴体の厚さは略０．０８ｍｍ〜０．１ｍｍ、直径は略６６ｍｍ、円周は略２０７ｍｍとなる。アルミニウムの比重は２．７である。したがって、たとえば、２ピース缶の胴体の１ｍｍあたりの重量は、円周（略２０７ｍｍ）、幅（略１ｍｍ）、厚さ（略０．１ｍｍ）、比重（略２．７）を乗算して、略０．０５６ｇと算出することができる。また、胴体の略１ｍｍあたりの容積は、胴体に係る内円の面積（略３４１９ｍｍ２）、高さ（略１ｍｍ）を乗算して、略３．４ｃｃと算出することができる。したがって、容積を略３．４ｃｃ分増加させることにより、胴体を略１ｍｍ短くすることができる。つまり、単位数量当たり略０．０５６ｇの軽量化が実現する。すなわち、本発明に係る２ピース缶１により、たとえば容積を略１５ｃｃ増加することができた場合、増加分の容積（略１５ｃｃ）と１ｍｍあたりの容積（略３．４ｃｃ）を除算して、胴体２０の削減分の高さとして略４．４ｍｍを算出することができる。ここから、胴体２０の削減分の高さ（略４．４ｍｍ）と胴体２０の１ｍｍあたりの重量（略０．０５６ｇ）を乗算して、胴体２０のアルミニウム使用量削減分として略０．２４６ｇを算出することができる。したがって、２ピース缶１の全体重量を略１６ｇとした場合、劇的な削減効果を得ることができる。すなわち、蓋の面がより高くなり、凹みドーム型の底面がより低くなるため、容量が増える。逆にいえば、同じ容積を収容するのに、胴体の全長を縮小させることができる。したがって、缶製造に要する材料を大きく削減することができる。 Generally, the total weight of a 350cc two-piece can is about 16g to 17g, the height is about 122.2mm to 122.7mm, the weight of the lid is about 3g, the thickness is about 0.26mm to 0.27mm, the body The thickness is approximately 0.08 mm to 0.1 mm, the diameter is approximately 66 mm, and the circumference is approximately 207 mm. The specific gravity of aluminum is 2.7. Therefore, for example, the weight per 1 mm of the body of a two-piece can is multiplied by the circumference (approximately 207 mm), width (approximately 1 mm), thickness (approximately 0.1 mm), specific gravity (approximately 2.7), It can be calculated as approximately 0.056 g. The volume per 1 mm of the trunk can be calculated as approximately 3.4 cc by multiplying the area of the inner circle (approximately 3419 mm 2 ) and the height (approximately 1 mm) of the trunk. Therefore, the body can be shortened by about 1 mm by increasing the volume by about 3.4 cc. That is, a weight reduction of approximately 0.056 g per unit quantity is realized. That is, when the volume can be increased by approximately 15 cc, for example, by the two-piece can 1 according to the present invention, the volume of the increase (approximately 15 cc) and the volume per 1 mm (approximately 3.4 cc) are divided to obtain the fuselage. Approximately 4.4 mm can be calculated as the height of 20 reductions. From this, the height (approximately 4.4 mm) of the reduction of the fuselage 20 is multiplied by the weight per millimeter (approximately 0.056 g) of the fuselage 20 to obtain approximately 0.246 g as the aluminum usage reduction of the fuselage 20. Can be calculated. Therefore, when the total weight of the two-piece can 1 is about 16 g, a dramatic reduction effect can be obtained. That is, the surface of the lid becomes higher and the bottom surface of the recessed dome shape becomes lower, so the capacity increases. Conversely, the overall length of the fuselage can be reduced to accommodate the same volume. Therefore, the material required for can production can be greatly reduced.

次に、このような構造により製造した２ピース缶１における内圧変化に対する耐久性及び内容物摂取の状況について説明する。   Next, the durability of the two-piece can 1 manufactured with such a structure against the internal pressure change and the situation of content intake will be described.

図３は、本発明の一実施形態に係る２ピース缶１の内圧変化に伴う蓋１０と底部３０とで行われる圧力調整及び蓋１０と胴体２０との結合状況を示す状態図である。なお、２ピース缶１の縦方向・横方向の図示は省略している。２ピース缶１には所定の内容物を注入し、スコア１１１０が閉じている状態である。２ピース缶１の内容物には、炭酸飲料等の内圧変化を生じさせるものも含み、また２ピース缶１を航空機等に積載させた場合には気圧の変化に伴い内圧変化を生じることもある。したがって、内圧変化による膨張等に耐える構造が必要となる。このようなときに、蓋先端部１２１０は胴体屈曲部２２２０に嵌合し、胴体先端部２２１０は蓋屈曲部１２２０に嵌合し、それらの部分で蓋１０を上方向に動かす力に対する反作用力が生じる。また、蓋周縁側部１２３０と胴体周縁側部２２３０とが密着している各階段状の部分でも、蓋１０を上方向に動かす力に対する反作用力が生じる。すなわち、各嵌合部分及び各階段部分がストッパーの役割を果たし、各嵌合部分のずれ・動きを抑止し、したがって蓋１０を封止することができる。   FIG. 3 is a state diagram showing pressure adjustment performed at the lid 10 and the bottom portion 30 in accordance with a change in internal pressure of the two-piece can 1 according to an embodiment of the present invention and a coupling state between the lid 10 and the body 20. In addition, illustration of the vertical direction and the horizontal direction of the two-piece can 1 is omitted. A predetermined content is injected into the two-piece can 1 and the score 1110 is closed. The contents of the two-piece can 1 include those that cause changes in internal pressure, such as carbonated drinks, and when the two-piece can 1 is loaded on an aircraft or the like, changes in internal pressure may occur with changes in atmospheric pressure. . Therefore, a structure that can withstand expansion due to a change in internal pressure is required. In such a case, the lid tip portion 1210 is fitted to the body bending portion 2220, the body tip portion 2210 is fitted to the lid bending portion 1220, and the reaction force against the force that moves the lid 10 upward at those portions is generated. Arise. Further, even in each stepped portion where the lid peripheral side portion 1230 and the body peripheral side portion 2230 are in close contact with each other, a reaction force against the force that moves the lid 10 upward is generated. That is, each fitting part and each staircase part serve as a stopper, so that displacement and movement of each fitting part can be suppressed, and thus the lid 10 can be sealed.

また、底部３０の凹みドーム部３１０には、圧力が加わるのに十分な面積があり、このドーム部分で圧力を吸収することができる。すなわち、内圧変化に伴う膨張により凹みドーム部３１０が外側に膨らもうとする際、底内凸部３３０が凹みドーム部３１０の膨らみに応じて連動して柔軟に変形するため、急激に加圧されても圧力を吸収することができる。   Further, the recessed dome portion 310 of the bottom portion 30 has a sufficient area for applying pressure, and the dome portion can absorb the pressure. That is, when the concave dome portion 310 is expanded outward due to the expansion due to the change in the internal pressure, the bottom inner convex portion 330 is flexibly deformed in conjunction with the expansion of the concave dome portion 310, so that the pressure is rapidly increased. Can absorb pressure.

図４Ａ及び図４Ｂは、本発明の一実施形態に係る２ピース缶１の内容物を摂取する際の内容物の流動状態を示す図である。なお、スコア１１１０は外した考察としている。図４Ａは内容物を摂取する際の流路を示す図、図４Ｂは内容物のうち微量に残り得る残留液を摂取する際の流路を示す図である。図４Ａに示すとおり、内容物を摂取する際は、２ピース缶１を所定の角度に傾けることで流し出す。このとき、これにより内容物のほぼ全てを取り出すことができる。一方、微量に残り得る残留液を摂取する際は、スコア１１１０がある胴体側面部２１０の方に当該残留液を寄せる等の行為を行った上で、図４Ｂに示すとおり所定の角度に２ピース缶１を傾けると、胴体側面部２１０を経由して胴体周縁部２２０に沿って取り出すことができる。   4A and 4B are diagrams showing a flow state of the contents when the contents of the two-piece can 1 according to the embodiment of the present invention are ingested. Note that the score 1110 is excluded from consideration. FIG. 4A is a diagram showing a flow path when ingesting contents, and FIG. 4B is a diagram showing a flow path when ingesting a residual liquid that can remain in a minute amount in the contents. As shown in FIG. 4A, when the contents are ingested, the two-piece can 1 is poured out by being inclined at a predetermined angle. At this time, almost all of the contents can be taken out. On the other hand, when ingesting a residual liquid that can remain in a minute amount, after performing an action such as bringing the residual liquid toward the fuselage side surface part 210 with the score 1110, two pieces are formed at a predetermined angle as shown in FIG. 4B. When the can 1 is tilted, it can be taken out along the trunk peripheral edge 220 via the trunk side surface 210.

次に、本願に係る２ピース缶１の製造方法について説明する。   Next, a method for manufacturing the two-piece can 1 according to the present application will be described.

図５は、本発明の一実施形態に係る２ピース缶１の製造工程を示すフローチャートである。同図に示すとおり、蓋１０は、たとえば材料を高温化して型に流し込む方法、本願に係る蓋１０の形状を成形することができる金型を用いたプレス加工、その他旋盤やフライス盤を使った加工、精密板金加工、しごき加工、しぼり加工等を含む全ての加工法により製造することでき、限定はない。なお、蓋先端部１２１０や蓋屈曲部１２２０等の微細部分は別工程を設けてＮＣ旋盤等で加工してもよい（ステップＳＰ１０）。また、胴体２０及び底部３０は、２ピース缶１として一連のものであるため、その形状を成形することができる金型を用いたプレス加工、その他旋盤やフライス盤を使った加工、精密板金加工、しごき加工、しぼり加工等を含む全ての加工法により製造することでき、限定はない（ステップＳＰ２０）。なお、蓋１０の製造と胴体２０及び底部３０の製造工程は同時に行ってもよい。   FIG. 5 is a flowchart showing a manufacturing process of the two-piece can 1 according to an embodiment of the present invention. As shown in the figure, the lid 10 is formed by, for example, a method in which a material is heated at a high temperature and poured into a mold, a press process using a mold capable of forming the shape of the lid 10 according to the present application, or other processes using a lathe or a milling machine. It can be manufactured by any processing method including precision sheet metal processing, ironing processing, and squeezing processing, and is not limited. Fine portions such as the lid tip portion 1210 and the lid bent portion 1220 may be processed by an NC lathe or the like by providing another process (step SP10). Moreover, since the body 20 and the bottom part 30 are a series of two-piece cans 1, press processing using a mold capable of forming the shape, other processing using a lathe or milling machine, precision sheet metal processing, It can be manufactured by all processing methods including ironing processing, squeezing processing, etc., and there is no limitation (step SP20). In addition, you may perform the manufacture of the lid | cover 10 and the manufacturing process of the trunk | drum 20 and the bottom part 30 simultaneously.

上記工程を経て製造された蓋１０と、底部３０と一体となる胴体２０とを外嵌するため、たとえば蓋周縁部１２０の蓋先端部１２１０を、胴体周縁部２２０の胴体先端部２２１０の方向から、胴体周縁側部２２３０を滑らすようにして経由し、胴体屈曲部２２２０に嵌合させて、それに伴い胴体先端部２２１０を蓋屈曲部１２２０に嵌合させてもよい。また、蓋周縁部１２０を所定の方法により傾斜を更に緩やかにするように幅を広げ、胴体周縁側部２２３０を滑らすことなく、先に胴体先端部２２１０を蓋屈曲部１２２０に嵌合させておき、その後に蓋先端部１２１０と胴体先端部２２１０を嵌合させてもよい（ステップＳＰ３０）。   In order to externally fit the lid 10 manufactured through the above steps and the body 20 integrated with the bottom portion 30, for example, the lid front end portion 1210 of the lid peripheral edge portion 120 is moved from the direction of the body front end portion 2210 of the body peripheral edge portion 220. Alternatively, the body periphery side portion 2230 may be slid and fitted to the body bending portion 2220, and the body front end portion 2210 may be fitted to the lid bending portion 1220 accordingly. Further, the lid peripheral edge portion 120 is widened so as to make the inclination further gentle by a predetermined method, and the trunk front end portion 2210 is first fitted to the lid bending portion 1220 without sliding the trunk peripheral edge portion 2230. Then, the lid front end portion 1210 and the body front end portion 2210 may be fitted (step SP30).

この際、蓋先端部１２１０と胴体屈曲部２２２０との嵌合部分、胴体先端部２２１０と蓋屈曲部１２２０との嵌合部分、蓋周縁側部１２３０と胴体周縁側部２２３０との接触面に、それぞれシーリングコンパウンド等の接着素材を塗布し、さらに硬化して密封させてもよい。シーリングコンパウンドの際は、ゴム成分、粘着付与剤、充填剤、有機過酸化物等のいずれか一つまたは複数の成分を配合した組成物からなるもので、食品安全性の面においても良好なものがよい。具体的には、ゴム成分としては、スチレン・ブタジエンゴム、ブタジエンゴム、天然ゴム、ニトリルゴム等を用いられる。また、粘着付与剤（樹脂成分）としては、ロジン、水素添加ロジン、ロジンエステル、水素添加ロジンエステル及び硬化ロジンの様なロジン系樹脂、α−ピネン、β−ピネン、ジペンテンの様なテルペン系樹脂、フェノールホルムアルデヒド樹脂、ロジンやテルペンの様な天然樹脂で変性したフェノール樹脂、キシレンホルムア ルデヒド樹脂及びその変性樹脂、石油炭化水素系樹脂等が用いられる。充填剤としては、コロイダルシリカ、含水ケイ酸、合成ケイ酸塩、無水ケイ酸の様なシリカ系充填剤、軽質及び重質炭酸カルシウム、活性化炭酸カルシウム、カオリン、焼成クレー、タルク、アルミナホワイト、硫酸カルシウム、水酸化アルミニウム、軽石粉、ガラス粉、酸化亜鉛、二酸化チタン、カーボンブラック等が用いられる。有機過酸化物としては、１，１−ビス（ｔ−ブチルパーオキシ）２−メチルシクロヘキサン、１，１−ビス（ｔ−ヘキシルパーオキシ）−３，３，５−トリメチルシクロヘキサン、１，１−ビス（ｔ−ヘキシルパーオキシ）シクロへキサン、１，１−ビス（ｔ−ブチルパーオキシ）−３，３，５−トリメチルシクロヘキサン、１，１−ビス（ｔ−ブチルパーオキシ）シクロヘキサン、１，１−ビス（ｔ−ブチルパーオキシ）シクロドデカン、ｎ−ブチル−４，４−ビス（ｔ−ブチルパーオキシ）バレレート等のパーオキシケタール類、ｔ−ヘキシルパーオキシベンゾエート、２，５−ジメチル−２，５−ジ（ベンゾイルパーオキシ）ヘキサン、ｔ−ブチルパーオキシベンゾエート、ジ−ｔ−ブチルパーオキシイソフタレート等のパーオキシエステル類、ジクミルパーオキサイド、２，５−ジメチル−２，５−ジ（ｔ−ブチルパーオキシ）ヘキサン、ｔ−ブチルクミルパーオキサイド、ジ−ｔ−ブチルパーオキサイド、ジ（２−ｔ−ブチルパーオキシイソプロピル）ベンゼン等のアルキルパーオキサイド類等が用いられる。   At this time, the fitting portion between the lid tip portion 1210 and the trunk bending portion 2220, the fitting portion between the trunk tip portion 2210 and the lid bending portion 1220, and the contact surface between the lid peripheral edge portion 1230 and the trunk peripheral edge portion 2230, Each may be coated with an adhesive material such as a sealing compound, and further cured and sealed. The sealing compound is composed of a composition containing one or more components such as rubber components, tackifiers, fillers, organic peroxides, etc., which is also good in terms of food safety Is good. Specifically, styrene / butadiene rubber, butadiene rubber, natural rubber, nitrile rubber, or the like is used as the rubber component. Further, as tackifiers (resin components), rosin, hydrogenated rosin, rosin ester, rosin resin such as hydrogenated rosin ester and cured rosin, and terpene resin such as α-pinene, β-pinene and dipentene Phenol formaldehyde resins, phenol resins modified with natural resins such as rosin and terpene, xylene formaldehyde resins and modified resins thereof, petroleum hydrocarbon resins and the like are used. As fillers, colloidal silica, hydrous silicic acid, synthetic silicate, silica-based fillers such as silicic anhydride, light and heavy calcium carbonate, activated calcium carbonate, kaolin, calcined clay, talc, alumina white, Calcium sulfate, aluminum hydroxide, pumice powder, glass powder, zinc oxide, titanium dioxide, carbon black and the like are used. Examples of the organic peroxide include 1,1-bis (t-butylperoxy) 2-methylcyclohexane, 1,1-bis (t-hexylperoxy) -3,3,5-trimethylcyclohexane, 1,1- Bis (t-hexylperoxy) cyclohexane, 1,1-bis (t-butylperoxy) -3,3,5-trimethylcyclohexane, 1,1-bis (t-butylperoxy) cyclohexane, 1, Peroxyketals such as 1-bis (t-butylperoxy) cyclododecane, n-butyl-4,4-bis (t-butylperoxy) valerate, t-hexylperoxybenzoate, 2,5-dimethyl- Peroxygens such as 2,5-di (benzoylperoxy) hexane, t-butylperoxybenzoate, di-t-butylperoxyisophthalate Tellurium, dicumyl peroxide, 2,5-dimethyl-2,5-di (t-butylperoxy) hexane, t-butylcumyl peroxide, di-t-butyl peroxide, di (2-t-butyl) Alkyl peroxides such as peroxyisopropyl) benzene are used.

以上詳細に説明したように、本実施形態によれば、蓋１０を胴体２０に外嵌し、蓋先端部１２１０が胴体屈曲部２２２０に嵌合し、胴体先端部２２１０が蓋屈曲部１２２０に嵌合する、いわゆる「嵌め殺し」加工により、二重巻き締めを行うかしめ加工を施す蓋及び胴体に係るカール部分は不要であるため、従来の二重巻き締めのものよりも製缶に必要な材料使用量を劇的に削減することができる。したがって、単位数あたりの製造コストを低減することができ、環境対策にも有益なものとすることができる。   As described above in detail, according to the present embodiment, the lid 10 is externally fitted to the trunk 20, the lid tip portion 1210 is fitted to the trunk bending portion 2220, and the trunk tip portion 2210 is fitted to the lid bending portion 1220. The so-called “fitting kill” process does not require a double-clamping lid and the curled part of the body, so it is a material necessary for making cans rather than the conventional double-clamped one Usage can be dramatically reduced. Therefore, the manufacturing cost per unit number can be reduced, and it can be useful for environmental measures.

すなわち、ライフサイクルアセスメント（Ｌｉｆe Ｃｙｃｌｅ Ａｓｓｅｓｓｍｅｎｔ、以下、「ＬＣＡ」ともいう。）の一環として、缶のライフサイクル（原料の選定から廃棄物の処理まで）における環境への影響についての評価も向上するものとなる。缶やその製造方法等が環境に与える影響を、原料採取から設計、生産、流通、消費、廃棄に至るまでの各段階における資源・エネルギーの消費と環境負荷を定量的に分析し、総合評価することにより、環境負荷の低減及び環境改善を図る手法となり得る。したがって、本願の技術思想に係る缶やその製造方法によって、世界規模の問題であるエネルギー消費量、材料使用量、二酸化炭素の排出量、廃棄物の量等を著しく改善することは明確である。 In other words, as part of Life Cycle Assessment (hereinafter also referred to as “LCA”), evaluation of environmental impacts in can life cycle (from selection of raw materials to disposal of waste) is also improved. It becomes. Quantitatively analyze and comprehensively evaluate the environmental impact of cans and their manufacturing methods by analyzing the consumption and environmental impact of resources and energy at each stage from raw material collection to design, production, distribution, consumption, and disposal. Therefore, it can be a technique for reducing environmental load and improving the environment. Therefore, it is clear that the cans according to the technical idea of the present application and the manufacturing method thereof remarkably improve the world-wide problems such as energy consumption, material usage, carbon dioxide emission, waste amount and the like.

また、ライフサイクルコスト（ＬＣＣ）の観点からすれば、結果として、購入者において缶は生産財であって商品を購入してから廃棄するまでの費用を軽減し、製造者においては企画・研究開発から材料残余分の廃棄に至るまでの経費（研究開発費、流通費、生産費、運用費、廃棄費等）を削減することができるため、本技術分野に係るＬＣＣの最適化を図ることができる。 Also, from the viewpoint of life cycle cost (LCC), as a result, cans are production goods for purchasers, and the costs from purchasing products to disposal are reduced, and planning / research and development for manufacturers. Cost from research to disposal of material surplus (R & D expenses, distribution costs, production costs, operation costs, disposal costs, etc.) can be reduced, so the LCC in this technical field can be optimized. it can.

また、かしめ加工に伴う空間５３０や窪み５４０もなく、底部３０がドーム形状のため、缶全体として容積が増加することになる。すなわち、蓋の面がより高くなり、凹みドーム型の底面がより低くなるため、容量が増える。逆にいえば、同じ容積を収容するのに、胴体２０の全長を縮小させることができる。したがって、缶製造に要する材料を大きく削減することができる。 In addition, there is no space 530 or depression 540 associated with the caulking process, and the bottom 30 has a dome shape, so that the volume of the can as a whole increases. That is, the surface of the lid becomes higher and the bottom surface of the recessed dome shape becomes lower, so that the capacity increases. Conversely, the entire length of the body 20 can be reduced to accommodate the same volume. Therefore, the material required for can production can be greatly reduced.

さらに、空間や窪みに残留液が滞留することなく全ての内容物を摂取することができる。またさらに、２ピース缶１のスコア１１１０を人が飲み口とする場合においても、このような形状により拭きやすくなり清潔性を保つことができるため、エチケット面においても有益である。 Furthermore, all the contents can be ingested without a residual liquid staying in a space or a depression. Furthermore, even when a person uses the score 1110 of the two-piece can 1 as a drinking mouth, such a shape is easy to wipe and can maintain cleanliness, which is also beneficial in terms of etiquette.

また、本実施形態によれば、蓋１０において蓋面状部１１０に係るスコア１１１０において、蓋面状部１１０の中心から最も離れたところを頂点として傾斜を持たせることで、内容物を摂取しやくすなり、残留液をより滞留させることがなくなる。したがって、従来の缶において内容量の表示値よりも多めに注入するような配慮も不要となる。また、２ピース缶１において、底部３０に凹みドーム部３１０を設けることで、内圧変化に伴う膨張にも圧力を吸収して柔軟に対応することができ、破裂等を防止することができる。   Further, according to the present embodiment, in the score 1110 related to the lid surface portion 110 in the lid 10, the content is ingested by giving an inclination with the place farthest from the center of the lid surface portion 110 as an apex. It becomes fast and the residual liquid is not retained more. Therefore, it is not necessary to consider that the conventional can can be injected more than the display value of the content. Further, in the two-piece can 1, by providing the recessed dome portion 310 in the bottom portion 30, it is possible to flexibly cope with expansion associated with a change in internal pressure, and to prevent rupture or the like.

したがって、製缶に関する問題点及び課題の解決に繋がり、製造原料の削減により資源の節約を実現し、残留液の消滅により悪臭等の公害を防止することができるため、環境にやさしい缶を市場に流通させることができる。   Therefore, it leads to the solution of problems and issues related to can manufacturing, achieves resource savings by reducing manufacturing raw materials, and prevents pollution such as bad odors by eliminating residual liquid. It can be distributed.

なお、本発明は上述した実施形態に限定されるものではなく、本発明の主旨を逸脱しない範囲内で種々変更して実施することが可能である。たとえば、本願の技術思想は、飲料用の缶に限らず、食品保存用の缶、液体状の玩具を内容物とする缶等においても応用することができる。   Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the technical idea of the present application can be applied not only to beverage cans but also to food storage cans, cans containing liquid toys, and the like.

さらにまた、本発明を用いて生産される装置、方法、システムが、その２次的生産品に搭載されて商品化された場合であっても、本発明の価値は何ら減ずるものではない。 Furthermore, even when the apparatus, method, and system produced using the present invention are mounted on the secondary product and commercialized, the value of the present invention is not reduced at all.

本願に係る技術思想は、製缶業界や食品業界に限らず、巻き締めによるかしめ加工のような方法により製造される製品、たとえばオイル止め等の部品を製造する自動車、船舶、航空機及びそれらの部品を製造する業界、精密機械における端子を用いる精密部品製造業界、溶接せずに水漏れ等を防ぐパイプを製造する製管業界等、省エネルギー化及び環境負荷の低減化において、広く社会全般に対して大きな有益性をもたらすものである。   The technical idea according to the present application is not limited to the can manufacturing industry and the food industry, but is manufactured by a method such as caulking by tightening, for example, automobiles, ships, aircrafts and parts for manufacturing parts such as oil stoppers. Industry, manufacturing precision parts using terminals in precision machinery, pipe manufacturing industry that manufactures pipes that prevent water leakage without welding, etc. It brings great benefits.

１…２ピース缶、１０…蓋、１２０…蓋周縁部、１２１０…蓋先端部、１２２０…蓋屈曲部、１２３０…蓋周縁側部、２０…胴体、２２０…胴体周縁部、２２１０…胴体先端部、２２２０…胴体屈曲部、２２３０…胴体周縁側部、３０…底部、３１０…凹みドーム部 DESCRIPTION OF SYMBOLS 1 ... 2 piece can, 10 ... Lid, 120 ... Lid peripheral part, 1210 ... Lid front end part, 1220 ... Lid bending part, 1230 ... Lid peripheral side part, 20 ... Body, 220 ... Body peripheral part, 2210 ... Body front part 2220: Body bending part, 2230 ... Body periphery side part, 30 ... Bottom part, 310 ... Recessed dome part

Claims (8)

蓋と胴体とが重合されてなる缶において、
前記蓋に係る重合部は第１の屈折パターンが形成される蓋屈曲部を具備し、
前記胴体は前記第１の屈折パターンに対応する第２の屈折パターンが形成される胴体屈曲部を具備し、
前記第１及び第２の屈折パターンが嵌合することで前記胴体屈曲部と前記蓋屈曲部とが重合されることを特徴とする缶。 In a can made by polymerizing a lid and a body,
The overlapping portion related to the lid includes a lid bending portion where a first refraction pattern is formed,
The body includes a body bending portion in which a second refraction pattern corresponding to the first refraction pattern is formed,
The can is characterized in that the body bending portion and the lid bending portion are polymerized by fitting the first and second refraction patterns. 前記胴体屈曲部に延設される突端である胴体先端部は前記蓋屈曲部に内接して嵌合されることを特徴とする請求項１記載の缶。   The can according to claim 1, wherein a front end portion of the body, which is a projecting end extending from the body bending portion, is inscribed and fitted into the lid bending portion. 前記蓋屈曲部に延設される突端である蓋先端部は前記胴体屈曲部に外接して嵌合されることを特徴とする請求項１もしくは２記載の缶。   The can according to claim 1 or 2, wherein a lid front end portion, which is a protruding end extending to the lid bending portion, is fitted to the body bending portion. 前記第１の屈折パターン及び／もしくは前記第２の屈折パターンは略階段状であることを特徴とする請求項１乃至３のうち１項記載の缶。   The can according to claim 1, wherein the first refraction pattern and / or the second refraction pattern is substantially stepped. 前記胴体先端部を前記蓋屈曲部に嵌合させ、前記蓋先端部を前記胴体屈曲部に嵌合させる際に、シーリングコンパウンドにて封止することを特徴とする請求項３記載の缶。   The can according to claim 3, wherein the body tip is fitted with the lid bent portion, and the lid tip is fitted with the body bent portion when sealed with a sealing compound. 前記缶は２ピース缶とし、底部を凹みドーム型にすることを特徴とする請求項１乃至５のうち１項記載の缶。   The can according to one of claims 1 to 5, wherein the can is a two-piece can, and the bottom is a concave dome shape. 前記蓋面状部に係る開口部において、当該蓋面状部の中心から最も離れたところを頂点として傾斜を持たせたことを特徴とする請求項１乃至６のうち１項記載の缶。   The can according to any one of claims 1 to 6, wherein the opening portion of the lid surface portion has an inclination with a vertex farthest from the center of the lid surface portion. 天蓋の面状部に蓋先端部及び蓋屈曲部を有する蓋周縁部を連続形成させ、該蓋屈曲部に第１の屈折パターンを形成するステップと、
底蓋に胴体周縁側部を立ち上げ形成し、該胴体周縁側部の遊端に胴体屈曲部及び胴体先端部を有する胴体周縁部を連続形成させ、該胴体屈曲部に第２の屈折パターンを形成するステップと、
前記第１及び第２の屈折パターンが嵌合するように前記胴体屈曲部を前記蓋屈曲部に外嵌させるステップと、
前記蓋先端部を前記胴体屈曲部に嵌合させ、前記胴体先端部を前記蓋屈曲部に嵌合させるステップと
を具備することを特徴とする缶の製造方法。 Continuously forming a lid peripheral portion having a lid tip and a lid bent portion on the surface portion of the canopy, and forming a first refraction pattern on the lid bent portion;
A body periphery side portion is raised and formed on the bottom lid, a body periphery portion having a body bending portion and a body tip portion is continuously formed at the free end of the body periphery side portion, and a second refraction pattern is formed on the body bending portion. Forming step;
Externally fitting the body bending portion to the lid bending portion so that the first and second refraction patterns fit together;
And a step of fitting the front end of the lid to the bent portion of the trunk and fitting the front end of the trunk to the bent portion of the lid.
JP2009107095A 2009-04-24 2009-04-24 Can and method for manufacturing the same Pending JP2012162267A (en)

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JPS6382944A (en) * 1986-09-11 1988-04-13 麒麟麦酒株式会社 Vessel made of metal
JPH01177127U (en) * 1988-06-03 1989-12-18
DE3925068A1 (en) * 1989-07-28 1991-02-07 Schmalbach Lubeca TWO OR THREE PIECE CONTAINERS, IN PART. MADE OF SHEET METAL
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