JPH0664645A - Metal container for packaging use and method for its production - Google Patents
Metal container for packaging use and method for its productionInfo
- Publication number
- JPH0664645A JPH0664645A JP21306292A JP21306292A JPH0664645A JP H0664645 A JPH0664645 A JP H0664645A JP 21306292 A JP21306292 A JP 21306292A JP 21306292 A JP21306292 A JP 21306292A JP H0664645 A JPH0664645 A JP H0664645A
- Authority
- JP
- Japan
- Prior art keywords
- container
- resin layer
- synthetic resin
- thick
- metal
- 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
- Rigid Containers With Two Or More Constituent Elements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属容器、とくに、内
面に合成樹脂層を被覆させた形式の包装用金属容器及び
その製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal container, and more particularly to a metal container for packaging of which the inner surface is covered with a synthetic resin layer and a method for producing the same.
【０００２】[0002]
【従来技術及び課題】エアーゾル容器等の液体製品又は
粘度の高い製品（内容物）を包装するための包装用金属
容器では、流通段階や在庫中における液体製品等の劣化
や容器内面の汚損又は腐食を防止するため、金属容器内
面に合成樹脂層が被覆されたものが普及している。2. Description of the Related Art Metal containers for packaging liquid products such as aerosol containers or highly viscous products (contents) are subject to deterioration of the liquid products at the distribution stage or in stock, and stains or corrosion on the inner surface of the containers. In order to prevent this, a metal container whose inner surface is covered with a synthetic resin layer is widely used.
【０００３】この種の包装用金属容器は、通常、図１に
示すような、金属層(1) の一面と合成樹脂層(2) が溶着
又はラミネートされた板材(P) から、一旦、図２のよう
な、カップ状容器を製作し、これをアイアニングによっ
て図３に示すような胴長容器とする。通常、前記カップ
状容器の開放端は波状に屈曲するものとなっていること
から、この胴長容器の開放端(12)も波状に屈曲してお
り、この部分をトリミング位置(L) でトリミングして平
滑な整形口部(11)に仕上げる。整形口部(11)に底板(3)
を圧入固定すると、図４のよウな容器主体(10)が形成さ
れる。エアーゾル容器の場合には、容器主体の頂部にバ
ルブ装置(V) が取付けられるが、このバルブ装置の取付
けに先立って、容器主体(10)に内容物を収容し噴射剤を
充填すると、同図のような容器となる。A metal container for packaging of this kind is usually prepared by temporarily removing a sheet from a plate material (P) having one surface of a metal layer (1) and a synthetic resin layer (2) welded or laminated as shown in FIG. A cup-shaped container such as No. 2 is manufactured, and this is made into a body length container as shown in FIG. Normally, the open end of the cup-shaped container is bent in a wavy shape, so the open end (12) of this long-body container is also bent in a wavy shape, and this part is trimmed at the trimming position (L). To form a smooth shaping mouth (11). Bottom plate (3) on the shaping mouth (11)
When is press-fitted and fixed, a container main body (10) as shown in FIG. 4 is formed. In the case of an aerosol container, the valve device (V) is attached to the top of the container main body, but if the container main body (10) contains the contents and is filled with the propellant prior to the installation of this valve device, the same figure is shown. It becomes a container like.
【０００４】以上の工程において、カップ状容器から胴
長容器を製作する工程で、内面の合成樹脂層(2) が剥離
することがある。この現象は、胴長容器の開放端(12)か
ら一定範囲の区域において著しい。これは次の理由によ
る。カップ状容器がアイアニングによって胴長容器とさ
れる工程において、胴部肉厚がその厚さの方向に加圧さ
れて引伸される。このとき、肉厚の圧下率が大きくなる
と金属層(1) と合成樹脂層(2) との境界の溶着強度が極
度に低下する。In the above process, the synthetic resin layer (2) on the inner surface may be peeled off in the process of manufacturing the long container from the cup-shaped container. This phenomenon is remarkable in the area within a certain range from the open end (12) of the long container. This is for the following reason. In the process of making a cup-shaped container into a body-length container by ironing, the body wall thickness is pressed in the thickness direction and stretched. At this time, if the reduction ratio of the wall thickness becomes large, the welding strength at the boundary between the metal layer (1) and the synthetic resin layer (2) will be extremely lowered.
【０００５】この溶着強度の低下度合は、合成樹脂層
(2) が薄い場合では比較的少いものの、合成樹脂層(2)
が厚い（５０ミクロン以上）場合には、とくに著しいも
のとなる。一方、板材(P) を絞り加工によってカップ状
容器としたときその開放端部の肉厚が、これに続く胴部
肉厚に比べて局部的に厚肉になる。従って、アイアニン
グによって成形された胴長容器の開放端(12)以外の胴部
の圧下率が比較的小さい条件に設定されていたとして
も、前記開放端(12)から一定範囲の圧下率が極端に大き
くなる。この結果、図３の破線で示すように、胴長容器
の開放端(12)において合成樹脂層(2) が剥離し易いもの
となるのである。The degree of decrease in the welding strength depends on the synthetic resin layer.
Synthetic resin layer (2)
When the thickness is thick (50 microns or more), it becomes particularly remarkable. On the other hand, when the plate material (P) is formed into a cup-shaped container by drawing, the wall thickness of the open end portion becomes locally thicker than the wall thickness of the body portion that follows. Therefore, even if the rolling ratio of the body portion other than the open end (12) of the body-length container formed by ironing is set to be relatively small, the rolling ratio from the open end (12) to a certain range is extremely low. Grows to. As a result, as shown by the broken line in FIG. 3, the synthetic resin layer (2) is easily peeled off at the open end (12) of the long container.
【０００６】尚、この剥離現象を防止するために、特公
昭59-35344号公報に開示されるように、胴長容器成形後
に板材(P) の合成樹脂層(2) の融点近傍の温度に加熱し
た後急冷する熱処理を施して、アイアニング加工後の金
属層(1) と合成樹脂層(2) とを再溶着し、金属層と合成
樹脂層との密着性を回復させる方法を採用することも考
えられるが、合成樹脂層の圧下率または胴部肉厚全体の
圧下率（板材(P) の肉厚からの圧下率）が一定レベルを
越えている場合には、合成樹脂層(2) の残留応力により
この熱処理の段階で剥離してしまうことがあった。In order to prevent this peeling phenomenon, as disclosed in Japanese Examined Patent Publication No. 59-35344, a temperature near the melting point of the synthetic resin layer (2) of the plate material (P) is formed after forming the long container. Use a method of recovering the adhesion between the metal layer and the synthetic resin layer by subjecting the metal layer (1) and the synthetic resin layer (2) after the ironing process to re-welding by performing a heat treatment of heating and then rapidly cooling. However, if the reduction rate of the synthetic resin layer or the reduction rate of the entire thickness of the body (the reduction rate from the thickness of the plate (P)) exceeds a certain level, the synthetic resin layer (2) In some cases, the residual stress of 1) causes peeling at the stage of this heat treatment.
【０００７】そこで、従来は、板材(P) の合成樹脂層
(2) の肉厚を薄くするか、または、この肉厚を厚くした
場合には胴長容器における胴部の圧下率を比較的小さく
して、容器主体(10)に仕上げている。ところが、前者の
ものでは、合成樹脂層(2) の肉厚が薄いことから、容器
主体(10)内に充填される内容物や噴射ガスの種類によっ
て一部の成分が合成樹脂層(2) を通過して金属層(1) と
の境界部に達し合成樹脂層(2) を剥離させることがあ
る。後者の場合には、この問題は生じないが、容器主体
(10)の全体の肉厚が厚くなることから、耐圧強度が必要
以上に設定されることとなって、材料の無駄が大きい。
また、十分には軽量化できない。Therefore, conventionally, the synthetic resin layer of the plate material (P) is used.
The wall thickness of (2) is made thin, or when this wall thickness is made thick, the rolling reduction of the body portion of the body-length container is made relatively small, and the container body (10) is finished. However, in the former one, since the synthetic resin layer (2) has a small thickness, some components may be part of the synthetic resin layer (2) depending on the content filled in the container main body (10) and the type of injected gas. There is a case where the synthetic resin layer (2) is peeled off by reaching the boundary with the metal layer (1) after passing through. In the latter case, this problem does not occur, but the container
Since the entire wall thickness of (10) becomes thicker, the pressure resistance is set more than necessary, and a large amount of material is wasted.
Moreover, the weight cannot be reduced sufficiently.
【０００８】［請求項１の発明］本発明は、『金属層
(1) の内面に合成樹脂層(2) を溶着した板材からなるカ
ップ状容器からアイアニングにより胴長容器に成形され
た容器主体(10)の胴部開放端部に、底板(3) を圧入止着
してなる包装用金属容器』において、容器主体(10)の胴
部肉厚の圧下率が大きい場合であっても、合成樹脂層
(2) が剥離しないようにすることをその課題とする。[Invention of Claim 1] The present invention provides a "metal layer
The bottom plate (3) is press-fitted into the open end of the body of the container main body (10), which is formed by ironing a cup-shaped container made of a plate material with the synthetic resin layer (2) welded to the inner surface of (1). In a metal container for packaging formed by fastening, even if the reduction rate of the body thickness of the container body (10) is large, the synthetic resin layer
The task is to prevent (2) from peeling.
【０００９】[0009]
【技術的手段】上記課題を解決するための本発明の技術
的手段は、『容器主体(10)の胴部開放端から一定範囲の
胴部肉厚を厚肉部(13)とし、この厚肉部(13)の圧下率を
胴部の他の部分の圧下率よりも小さく設定し、この厚肉
部(13)に底板(3) を圧入止着した』ことである。[Technical Means] The technical means of the present invention for solving the above-mentioned problem is that "a thick part (13) is a part of the main body of the container (10) having a predetermined range of the part thickness from the open end of the part. The bottom plate (3) was press-fitted and fastened to this thick part (13) by setting the reduction ratio of the wall part (13) to be smaller than that of the other parts of the body part. '
【００１０】[0010]
【作用】上記技術的手段は次のように作用する。容器主
体(10)において、胴部開放端及びその近傍部分が最も剥
離しやすいが、この部分は胴部の他の部分よりも圧下率
の小さな厚肉部(13)に構成されているから、合成樹脂層
(20)の剥離現象のきっかけが生じにくい。The above technical means operates as follows. In the container main body (10), the open end of the body part and its vicinity are most likely to peel off, but since this part is configured as a thick part (13) having a smaller reduction ratio than the other parts of the body part, Synthetic resin layer
The trigger of the peeling phenomenon of (20) is unlikely to occur.
【００１１】また、胴部開放端の厚肉部(13)に底板(3)
が圧入止着されるから、胴部開放端となっていた部分の
合成樹脂層(2) が底板(3) と容器主体(10)の胴部を構成
する金属層(1) との間に挟圧された状態にある。また、
容器主体(10)の胴部の極一部分が厚肉部(13)となってい
るだけであるから、容器主体(1) の胴部の大部分が十分
な圧下率の薄肉に構成できる。Further, the bottom plate (3) is attached to the thick portion (13) at the open end of the body.
Since it is press-fitted and fastened, the synthetic resin layer (2) at the part that was the open end of the body is between the bottom plate (3) and the metal layer (1) that forms the body of the container body (10). It is in a pinched state. Also,
Since only a part of the body of the container main body (10) is the thick-walled portion (13), most of the body of the container main body (1) can be made thin with a sufficient reduction rate.
【００１２】[0012]
【効果】最も剥離し易い胴部開放端が圧下率の小さい厚
肉部(13)となっているから、合成樹脂層(2) の剥離が生
じにくい。また、この部分の合成樹脂層(2) が底板(3)
と容器主体(10)の胴部を構成する金属層(1) との間に挟
圧された状態にあるから、この点でも一層剥離が生じに
くいものとなる。[Effect] The synthetic resin layer (2) is less likely to be peeled off because the open end of the body portion, which is most easily peeled off, is the thick portion (13) having a small rolling reduction. Also, the synthetic resin layer (2) in this part is the bottom plate (3).
Since it is sandwiched between the metal layer (1) forming the body of the container body (10) and the metal layer (1), peeling is less likely to occur in this respect as well.
【００１３】容器主体(1) の胴部開放端部が厚肉部(13)
となっているだけであるから、容器全体の重量が重くな
らない。容器主体(1) における底板(3) の圧入止着部は
厚肉部(13)となっており、この部分が容器底部となるか
ら最も衝撃を受け易い部分の強度が向上し、容器として
の耐久性も十分なものとなる。The main body of the container (1) has a thick wall portion (13) at the open end.
The weight of the entire container does not become heavy. The press-fitting fastening part of the bottom plate (3) of the container main body (1) is a thick part (13), and since this part becomes the container bottom part, the strength of the part most susceptible to impact is improved, and The durability is also sufficient.
【００１４】［請求項２の発明］本発明は、上記請求項
１の発明の包装用金属容器の製造方法に関するもので、
『金属層(1) の一方の面に合成樹脂層(2) を溶着した板
材からカップ状容器を製作する工程と、このカップ状容
器をアイアニングにより胴長容器に成形する工程と、前
記胴長容器の開放端(12)をトリミングして整形口部(11)
を形成し、この整形口部(11)を底板(3) によって閉塞し
て容器主体(10)を形成する工程とからなる包装用金属容
器の製造方法』において、胴部肉厚の圧下率が大きい場
合であっても、胴長容器成形工程又はその後において合
成樹脂層(2) が剥離しないようにすることをその課題と
する。[Invention of Claim 2] The present invention relates to a method of manufacturing a metal container for packaging according to the invention of Claim 1 above.
`` The process of making a cup-shaped container from a plate material in which the synthetic resin layer (2) is welded to one surface of the metal layer (1), the process of forming this cup-shaped container into a long-length container by ironing, Trim the open end of the container (12) to shape the mouth (11)
And forming the container main body (10) by closing the shaping opening (11) with the bottom plate (3) '', the reduction ratio of the body wall thickness is Even if it is large, it is an object to prevent the synthetic resin layer (2) from peeling off in the body-length container forming step or thereafter.
【００１５】[0015]
【技術的手段】上記課題を解決するための本発明の技術
的手段は、『カップ状容器を胴長容器に加工する際、胴
長容器の開放端(12)から一定範囲の胴部肉厚を厚肉部(1
3)とし、胴長容器成形後この厚肉部(13)の一部を残すよ
うにトリミングして整形口部(11)を形成し、この整形口
部(11)に底板(3) を圧入止着した』ことである。[Technical Means] The technical means of the present invention for solving the above-mentioned problem is that "when processing a cup-shaped container into a body-long container, the body wall thickness within a certain range from the open end (12) of the body-long container. The thick part (1
3), and after shaping the long container, trim to leave a part of this thick part (13) to form the shaping mouth (11), and press the bottom plate (3) into this shaping mouth (11). It's fixed ”.
【００１６】[0016]
【作用】上記技術的手段は次のように作用する。一般的
には、胴長容器を加工したとき、この開放端(12)におい
て金属層(1) と合成樹脂層(2) が部分的に剥離し易い。
そして、この開放端(12)における剥離現象はアイアンン
グによる被加工部の圧下率が一定レベルよりも大きい条
件で生じ易い。The above technical means operates as follows. In general, when the shell-length container is processed, the metal layer (1) and the synthetic resin layer (2) are likely to be partially separated at the open end (12).
The peeling phenomenon at the open end (12) is likely to occur under the condition that the reduction rate of the processed portion due to ironing is larger than a certain level.
【００１７】上記本発明方法を採用するものでは、最も
剥離の生じ易い開放端(12)から一定の範囲の部分が厚肉
部(13)となっているからこの部分での圧下率は小さく設
定されることとなり、合成樹脂層(2) が剥離しない。こ
のように成形された胴長容器の上記厚肉部(13)の一部を
残すようにトリミングすると、胴長容器の整形口部(11)
から一定範囲が厚肉部(13)となると共に、これに続く胴
部が十分な圧下率の所定の肉厚となる。従って、最も剥
離の生じ易い部分の圧下率が低く押さえられている。In the case of employing the above-mentioned method of the present invention, a portion within a certain range from the open end (12) where peeling is most likely to occur is a thick portion (13), so the rolling reduction at this portion is set small. As a result, the synthetic resin layer (2) does not peel off. When trimming is performed so as to leave a part of the thick portion (13) of the long container formed in this manner, the shaping mouth portion (11) of the long container (11)
From the above, a certain range becomes a thick wall portion (13), and the body portion following this has a predetermined wall thickness with a sufficient reduction rate. Therefore, the reduction rate of the portion where peeling is most likely to occur is kept low.
【００１８】この整形口部(11)に蓋体が圧入止着される
から、胴長容器の開放端となっていた部分の合成樹脂層
(2) が蓋体と容器主体(10)の胴部を構成する金属層(1)
との間に挟圧されることとなる。従って、容器完成状態
で合成樹脂層(2) が剥離することもない。Since the lid body is press-fitted and fixed to the shaping mouth portion (11), the synthetic resin layer of the portion which was the open end of the body-long container
(2) is a metal layer (1) that forms the body of the lid and the container body (10)
It will be pinched between and. Therefore, the synthetic resin layer (2) does not peel off in the completed container.
【００１９】[0019]
【効果】胴長容器に加工する際に、厚肉部(13)を残して
胴部断面の圧下率を適正化するものであるから、胴長容
器成形工程での合成樹脂層(2) の剥離が防止できると共
に、完成した包装容器では、前記厚肉部(13)となった整
形口部(11)に底板(3) が圧入されて最も剥離しやすい部
分の合成樹脂層(2) が前記底板と金属層(1) との間に挟
圧されたものとなるから、包装用容器完成後に合成樹脂
層(2) が剥離することもない。[Effect] When processing into a long container, the thick part (13) is left to optimize the reduction ratio of the cross section of the body, so that the synthetic resin layer (2) in the process of forming the long container In addition to being able to prevent peeling, in the finished packaging container, the bottom plate (3) is press-fitted into the shaping opening (11) which has become the thick portion (13), and the synthetic resin layer (2) at the portion most easily peeled is formed. Since it is sandwiched between the bottom plate and the metal layer (1), the synthetic resin layer (2) does not peel off after the packaging container is completed.
【００２０】全体を均一で且比較的厚肉に設定する場合
には、本発明の上記厚肉部(13)を設ける必要がないが、
この場合に比べて、本発明のものでは、厚肉部に続く胴
部肉厚が大幅に薄肉に設定できるから、軽量化できると
共に、材料の使用量が削減できる。When the whole is set to be uniform and relatively thick, it is not necessary to provide the thick portion (13) of the present invention,
Compared to this case, in the case of the present invention, since the thickness of the body portion following the thick portion can be set to be significantly thin, the weight can be reduced and the amount of material used can be reduced.
【００２１】[0021]
【実施例】次に、上記した本発明の実施例を図面に従っ
て詳述する。この実施例では、カップ状容器を製作する
板材(P) を、金属層(1) としてのアルミニューム層(1a)
（厚さ０．５ｍｍ）の一方の面に合成樹脂層(2) として
のポリエチレンテレフタレート樹脂層（以下，ＰＥＴ樹
脂層(2a)という）を溶着によって結合した断面構造とす
る。尚、このＰＥＴ樹脂層(2a)の厚さは、０．１ｍｍに
設定されている。Embodiments of the present invention described above will now be described in detail with reference to the drawings. In this embodiment, the plate material (P) for producing the cup-shaped container is used as the aluminum layer (1a) as the metal layer (1).
A polyethylene terephthalate resin layer (hereinafter referred to as PET resin layer (2a)) as a synthetic resin layer (2) is bonded to one surface (thickness 0.5 mm) by welding to form a sectional structure. The thickness of this PET resin layer (2a) is set to 0.1 mm.
【００２２】この板材(P) を用いて直径５３ｍｍ、高さ
１６０ｍｍの胴長の容器主体(10)であって、底部が底板
(3) によって閉塞された容器主体(10)を製作する場合に
ついて説明する。カップ状容器は、所定形状及び板厚の
ブランクから絞り加工によって製作される。このとき、
このカップ状容器の直径は８７ｍｍ、高さは８０ｍｍに
設定される。また、この加工では、胴部肉厚は上記板材
(P) の肉厚に略一致している。この形状は、従来の図２
のカップ状容器のそれと同様である。This plate material (P) is a container main body (10) having a body length of 53 mm in diameter and 160 mm in height, the bottom of which is a bottom plate.
The case where the container main body (10) closed by (3) is manufactured will be described. The cup-shaped container is manufactured from a blank having a predetermined shape and plate thickness by drawing. At this time,
The cup-shaped container has a diameter of 87 mm and a height of 80 mm. Also, in this processing, the body wall thickness is
It is almost the same as the wall thickness of (P). This shape is similar to
It is similar to that of the cup-shaped container.
【００２３】このように形成されたカップ状容器をアイ
アニングによって、一旦、一様な胴部肉厚で最終的な深
さに成形されていない胴長の一次中間容器(14)（図５参
照）に成形される。その後のアイアニングによって開放
端(12)から一定の範囲が厚肉部(13)となった最終深さの
胴長の二次中間容器(15)（図６参照）に加工する。この
とき、複数回のアイアニングを組合せることにより、最
終深さに仕上げる。通常、一回のアイアニングによる胴
部の肉厚の圧下率は、２５％程度以下に設定されること
から、この実施例では、初回のアイアニングによって一
次中間容器(14)に仕上げ、二回目のアイアニングによっ
て二次中間容器(15)を製作する。初回のアイアニングで
は、図７のように、一様な直径の成形孔(41)を設けたダ
イス(4) とこれに適合するポンチ(5) との組合せからな
る金型を使用する。その後の加工では、図８のように、
ダイス(4) の成形孔(41)の内周壁上端部（材料の入口
側）に拡大径部(42)を設けた金型を使用する。The cup-shaped container thus formed is subjected to ironing to temporarily form a primary intermediate container (14) having a uniform body wall thickness and not yet formed to a final depth (see FIG. 5). Is molded into. Subsequent ironing processes into a secondary intermediate container (15) (see FIG. 6) having a body length of a final depth in which a certain range from the open end (12) becomes a thick portion (13). At this time, a final depth is obtained by combining a plurality of innings. Normally, the reduction ratio of the wall thickness of the body portion by one time of ironing is set to about 25% or less, so in this example, the first intermediate container (14) is finished by the first ironing, and the second ironing is performed. A secondary intermediate container (15) is manufactured by. In the first inning, as shown in FIG. 7, a die comprising a die (4) provided with a forming hole (41) having a uniform diameter and a punch (5) adapted to the die is used. In the subsequent processing, as shown in FIG.
A die having an enlarged diameter portion (42) at the upper end portion (on the material inlet side) of the inner peripheral wall of the forming hole (41) of the die (4) is used.
【００２４】カップ状容器を上記金型を用いて図５に示
す一次中間容器(14)に仕上げるためのアイアニングでは
アルミニューム層(1a)及びＰＥＴ樹脂層(2a)が共に軸線
方向に伸ばされて薄肉化される。しかしながら、この段
階までの加工では、アルミニューム層(1a)とＰＥＴ樹脂
層(2a)との間には剥離が生じない。この段階での容器の
胴部の圧下率は、カップ状容器のそれの４０％程度に設
定されているからである。In the inning for finishing the cup-shaped container into the primary intermediate container (14) shown in FIG. 5 by using the above mold, both the aluminum layer (1a) and the PET resin layer (2a) are stretched in the axial direction. Thinned. However, in the processing up to this stage, peeling does not occur between the aluminum layer (1a) and the PET resin layer (2a). This is because the rolling reduction of the body of the container at this stage is set to about 40% of that of the cup-shaped container.
【００２５】次に、二次中間容器(15)に仕上げるため
に、図８に示す金型を用いて一次中間容器(14)にアイア
ニングを施す。このとき、成形孔(41)の内周面上端に拡
大径部(42)を設けていることから、一次中間容器(14)の
開放端部から一定範囲は肉厚方向に加圧されず、それよ
りも下方の肉厚が薄肉化されて容器の深さが深くなり、
図６のように、開放端(12)から一定範囲が厚肉部(13)と
なった二次中間容器(15)となる。この実施例の場合、前
記厚肉部(13)の肉厚は一次中間容器(14)における胴部肉
厚のままに維持され、これに続く胴部の圧下率は６０％
程度となっている。Next, in order to finish the secondary intermediate container (15), the primary intermediate container (14) is subjected to ironing using the mold shown in FIG. At this time, since the enlarged diameter portion (42) is provided at the upper end of the inner peripheral surface of the molding hole (41), a certain range from the open end of the primary intermediate container (14) is not pressed in the thickness direction, The lower wall thickness is thinned and the depth of the container is deeper,
As shown in FIG. 6, the secondary intermediate container (15) has a thick portion (13) in a certain range from the open end (12). In the case of this embodiment, the wall thickness of the thick wall portion (13) is maintained at the wall thickness of the primary intermediate container (14), and the rolling reduction of the body portion subsequent thereto is 60%.
It has become a degree.
【００２６】この後、少なくとも、二次中間容器(15)の
厚肉部(13)とこれに続く胴部の一定範囲（胴部全体の約
半分）、又は、二次中間容器(15)の全体を３２０℃の温
度に加熱し、この状態を５秒間維持する。これによっ
て、ＰＥＴ樹脂層(2a)が溶融してアルミニューム層(1a)
と再溶着し、アルミニューム層(1a)と前記ＰＥＴ樹脂層
(2a)との密着性が回復される。After this, at least a certain range of the thick portion (13) of the secondary intermediate container (15) and the body portion following it (about half of the entire body portion) or the secondary intermediate container (15) The whole is heated to a temperature of 320 ° C., and this state is maintained for 5 seconds. As a result, the PET resin layer (2a) melts and the aluminum layer (1a)
Re-welded with the aluminum layer (1a) and the PET resin layer
The adhesion with (2a) is restored.
【００２７】このように熱処理された二次中間容器(15)
の開放端(12)を、トリミング位置(L) でトリミングして
厚肉部(13)の大部分が残るようにすると、最終中間容器
が完成する。この最終中間容器を用いて図１０又は図１
１に示すようなバルブ装置(V) を具備する包装用金属容
器とする。図１０に示す包装用金属容器では、最終中間
容器の厚肉部(13)に仕上げられた整形口部(11)内に周縁
にスカート部(33)を具備する底板(3) を圧入して前記ス
カート部(33)と整形口部(11)の端部を巻き締める。これ
により、ＰＥＴ樹脂層(2a)が底板(3) との巻き締め部に
よって加圧された状態に装着される。The secondary intermediate container (15) thus heat-treated
The final intermediate container is completed by trimming the open end (12) at the trimming position (L) so that most of the thick portion (13) remains. Using this final intermediate container,
The metal container for packaging is equipped with the valve device (V) as shown in 1. In the packaging metal container shown in FIG. 10, a bottom plate (3) having a skirt portion (33) at the periphery is press-fitted into the shaping mouth portion (11) finished in the thick portion (13) of the final intermediate container. Tighten the ends of the skirt portion (33) and the shaping mouth portion (11). As a result, the PET resin layer (2a) is mounted in a state in which it is pressed by the winding and fastening portion with the bottom plate (3).
【００２８】一方、バルブ装着部となる頂壁部(16)に
は、同図に示すような、カール部(C)を具備する開口部
が形成されて、これに従来の場合と同様にバルブ装置
(V) を具備する蓋板(30)を圧入してカシメ止めすると、
前記カール部(C) の断面外周に位置するＰＥＴ樹脂層(2
a)が蓋板(30)の外周部によって加圧された状態に装着さ
れて、この部分のＰＥＴ樹脂層(2a)がアルミニューム層
(1a)と蓋板(30)の周縁部によっ挟圧された容器となる。On the other hand, an opening having a curl portion (C) is formed in the top wall portion (16), which is a valve mounting portion, as shown in FIG. apparatus
When the cover plate (30) equipped with (V) is press-fitted and caulked,
PET resin layer (2) located on the outer circumference of the curl section (C)
a) is mounted in a state of being pressed by the outer peripheral portion of the lid plate (30), and the PET resin layer (2a) in this portion is an aluminum layer.
The container is pressed by the peripheral portion of (1a) and the cover plate (30).
【００２９】尚、この蓋板(30)の取付けに先立って、容
器内に内容物を充填し噴射剤を充填することは言うまで
もない。上記実施例では、直径８７ｍｍ、深さ８０ｍｍ
のカップ状容器から、直径５３ｍｍ、深さ１６０ｍｍの
二次中間容器(15)を製作するに際し、一次中間容器(14)
を製作するためのアイアニング工程、及び、その後一次
中間容器(14)から二次中間容器(15)に仕上げるためのア
イアニング工程を１工程としたが、前者の工程を複数工
程に分けてもよい。Needless to say, the container is filled with the contents and the propellant prior to the attachment of the cover plate (30). In the above embodiment, the diameter is 87 mm and the depth is 80 mm.
When manufacturing a secondary intermediate container (15) having a diameter of 53 mm and a depth of 160 mm from the cup-shaped container of, the primary intermediate container (14)
Although the ironing process for manufacturing and the ironing process for finishing the primary intermediate container (14) to the secondary intermediate container (15) are defined as one process, the former process may be divided into a plurality of processes.
【００３０】また、アイアニングの全ての工程におい
て、図８に示すような成形孔(41)に拡大径部(42)を具備
させたダイス(4) とポンチ(5) との組合せからなる金型
を使用するようにしてもよい。この場合には、厚肉部(1
3)に相当する胴部上端の最終の圧下率を好ましくは、４
０％以下に設定しておく。さらに好ましくは、前記圧下
率３５％程度に設定しておく。Further, in all of the ironing steps, a mold comprising a combination of a die (4) having a molding hole (41) having an enlarged diameter portion (42) as shown in FIG. 8 and a punch (5). May be used. In this case, the thick part (1
The final rolling reduction at the upper end of the body corresponding to 3) is preferably 4
Set it to 0% or less. More preferably, the reduction rate is set to about 35%.
【００３１】尚、上記実施例のものでは、アイアニング
工程において、各工程に適合した複数の金型を用いるこ
ととしたが、図９のように、一つのポンチ(5) と、軸線
方向に連続する複数の成形孔(41)(41)を具備するダイス
とを組合せる形式の金型によりアイアニング工程を一つ
の工程とすることもできる。又、図１０に示す実施例の
容器では、整形口部(11)と底板(3) を巻き締めによって
結合固定する構成としたが、図１１に示すように厚肉部
(13)となった整形口部(11)を底板(3) によって閉塞する
と共に、接着とカーリングによって固着し、容器主体(1
0)の頂壁部(16)にバルブ装置(V) を装着するような構成
の容器とすることもできる。In the above-mentioned embodiment, a plurality of molds suitable for each process are used in the ironing process. However, as shown in FIG. 9, one punch (5) and an axial direction are used continuously. It is also possible to make the ironing process one process by using a die of a type in which a die having a plurality of molding holes (41) (41) is combined. Further, in the container of the embodiment shown in FIG. 10, the shaping mouth portion (11) and the bottom plate (3) are coupled and fixed by winding, but as shown in FIG.
The shaping mouth (11) that became (13) is closed by the bottom plate (3) and fixed by adhesion and curling, and the container main body (1
It is also possible to provide a container having a structure in which the valve device (V) is mounted on the top wall portion (16) of 0).
【００３２】このものでは、前記底板(3) は、周縁にス
カート部(33)を具備する構成とすると共に、上面及び周
側表面を合成樹脂層によって被覆した断面構造としてあ
り、前記(33)を容器主体(10)の口部(11)に圧入して接着
し、容器主体(10)の開放端部の一定範囲を内側にカール
させて底板(3) を口部(11)に固定する。一方、バルブ装
置(V) は、入口部(35)及び出口部(37)を具備するユニッ
トとしてあり、この入口部(35)を頂壁部(16)に形成した
ポート(17)に一致させるように、前記ユニットの下面を
接着固定する。これにより、容器主体(10)内と前記入口
部(35)とが連通した状態バルブ装置(V) が取付けられる
こととなる。In this structure, the bottom plate (3) has a skirt portion (33) at the periphery and has a cross-sectional structure in which the upper surface and the peripheral surface are covered with a synthetic resin layer. Is pressed into the mouth (11) of the container body (10) and adhered, and a certain area of the open end of the container body (10) is curled inward to fix the bottom plate (3) to the mouth (11). . On the other hand, the valve device (V) is a unit having an inlet part (35) and an outlet part (37), and the inlet part (35) is made to coincide with the port (17) formed in the top wall part (16). Thus, the lower surface of the unit is adhesively fixed. As a result, the state valve device (V) in which the inside of the container body (10) and the inlet portion (35) communicate with each other is attached.
【００３３】尚、上記実施例では、金属層(1) をアルミ
ニューム層(1a)としたが、金属層(1) を鋼板としてもよ
く、また、合成樹脂層(2) をＰＥＴ樹脂以外の合成樹脂
から構成されるものとしてもよい。例えば、この合成樹
脂層(2) としては、ナイロン樹脂、ポリプロピレン樹脂
等が採用できる。又、金属層(1) と合成樹脂層(2) との
肉厚比率、及び、容器構成素材としての板材(P) と、二
次中間容器(15)とした場合の厚肉部(13)の圧下率と、剥
離強度との関係については次のような結果が得られた。In the above embodiment, the metal layer (1) is the aluminum layer (1a), but the metal layer (1) may be a steel plate, and the synthetic resin layer (2) is not made of PET resin. It may be made of synthetic resin. For example, as the synthetic resin layer (2), nylon resin, polypropylene resin or the like can be adopted. In addition, the thickness ratio between the metal layer (1) and the synthetic resin layer (2), and the plate material (P) as a container constituent material, and the thick part (13) when the secondary intermediate container (15) is used. The following results were obtained regarding the relationship between the rolling reduction and the peel strength.
【００３４】．板材(P) の構成 金属層(1) →アルミニューム層：０．５ｍｍ 合成樹脂層(2) →ナイロン樹脂層 ：０．１ｍｍ ．容器主体(1) の形状及び大きさ 形 状→頂壁を有する下端開放の円筒形状 大きさ→直径：５３ｍｍ，高さ：１００ｍｍ ．剥離強度測定方法 二次中間容器(15)の胴部を所定のサイズに切り取り、こ
れのナイロン樹脂層の部分に５ｍｍ幅で平行に切り込み
を入れた図１２のような試料を製作しこの試料を図１３
に示す方法により引剥し力をプルゲージで測定した。.. Structure of plate material (P) Metal layer (1) → Aluminum layer: 0.5 mm Synthetic resin layer (2) → Nylon resin layer: 0.1 mm. The shape and size of the container main body (1) Shape → Cylindrical shape with open lower end with top wall Size → Diameter: 53 mm, Height: 100 mm. Peel strength measurement method The body of the secondary intermediate container (15) was cut into a predetermined size, and the nylon resin layer was cut in parallel with a width of 5 mm to prepare a sample as shown in FIG. FIG.
The peeling force was measured with a pull gauge by the method shown in.
【００３５】 尚、厚肉部(13)の肉厚が０．５０ｍｍの条件では、アル
ミニューム層とナイロン樹脂層との密着力が強く、試験
中に破断して測定が不能であった。[0035] Under the condition that the thickness of the thick portion (13) was 0.50 mm, the adhesion between the aluminum layer and the nylon resin layer was so strong that it was broken during the test and the measurement was impossible.
【００３６】上記測定結果をグラフに表すと、図１４の
ようになる。同図のグラフによれば、実用上十分な剥離
強度１５０ｇ程度を得るためには、上記板材を使用する
条件では、圧下率を４０％程度以上に設定することが望
ましく、さらに望ましくは、圧下率を３５％程度に設定
するとよく、この場合には、２００ｇ程度の剥離強度が
得られることが明かとなる。FIG. 14 is a graph showing the above measurement results. According to the graph in the figure, in order to obtain a practically sufficient peel strength of about 150 g, it is desirable to set the reduction rate to about 40% or more under the conditions of using the plate material, and more desirably, the reduction rate. Is preferably set to about 35%, and in this case, it is clear that a peel strength of about 200 g can be obtained.
【図１】板材(P) の断面図[Fig.1] Sectional view of plate (P)
【図２】カップ状容器の断面図FIG. 2 is a sectional view of a cup-shaped container.
【図３】従来の最終の胴長容器の断面図FIG. 3 is a sectional view of a conventional final body-length container.
【図４】包装用金属容器の説明図FIG. 4 is an explanatory view of a metal container for packaging.
【図５】本発明の実施例の一次中間容器(14)の断面図FIG. 5 is a sectional view of the primary intermediate container (14) of the embodiment of the present invention.
【図６】二次中間容器(15)の断面図FIG. 6 is a sectional view of the secondary intermediate container (15).
【図７】一次中間容器(14)を成形するアイアニング工程
説明図FIG. 7 is an explanatory diagram of an ironing process for molding the primary intermediate container (14)
【図８】二次中間容器(15)を成形するアイアニング工程
説明図FIG. 8 is an explanatory diagram of an ironing process for molding the secondary intermediate container (15)
【図９】他のアイアニング工程の説明図FIG. 9 is an explanatory view of another ironing process.
【図１０】包装用金属容器の説明図FIG. 10 is an explanatory view of a metal container for packaging.
【図１１】他の形式の包装用金属容器の断面図FIG. 11 is a cross-sectional view of another type of metal packaging container.
【図１２】剥離強度試験に用いる試料の説明図FIG. 12 is an explanatory diagram of a sample used for a peel strength test.
【図１３】引剥し力測定方法の説明図FIG. 13 is an explanatory diagram of a peeling force measuring method.
【図１４】引剥し力測定結果のグラフFIG. 14: Graph of peeling force measurement results
(1) ・・・金属層 (2) ・・・合成樹脂層 (12)・・・開放端 (11)・・・整形口部 (3) ・・・底板 (10)・・・容器主体 (13)・・・厚肉部 (1) ・ ・ ・ Metal layer (2) ・ ・ ・ Synthetic resin layer (12) ・ ・ ・ Open end (11) ・ ・ ・ Shaping mouth part (3) ・ ・ ・ Bottom plate (10) ・ ・ ・ Main container ( 13) ... Thick part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉賀 法夫 滋賀県長浜市三ツ矢町五番八号 三菱樹脂 株式会社長浜研究所内 (72)発明者 柳原 擴 大阪市東成区神路２丁目８番28号 アジア 金属工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Norio Yoshiga 5-8 Mitsuya-cho, Nagahama-shi, Shiga Mitsubishi Plastics Co., Ltd. Nagahama Laboratory (72) Inventor Akira Yanagihara 2-8-28 Shinji, Higashinari-ku, Osaka Within Asia Metal Industry Co., Ltd.
Claims (5)
着した板材からなるカップ状容器からアイアニングによ
り胴長容器に成形された容器主体(10)の胴部開放端部に
底板(3) を圧入止着してなる包装用金属容器において、
容器主体(10)の胴部開放端から一定範囲の胴部肉厚を厚
肉部(13)とし、この厚肉部(13)の圧下率を胴部の他の部
分の圧下率よりも小さく設定し、この厚肉部(13)に底板
(3) を圧入止着した包装用金属容器。1. A cup-shaped container made of a plate material in which a synthetic resin layer (2) is welded to the inner surface of a metal layer (1), and the body end (10) of the container main body (10) formed into a long container by ironing. In a metal container for packaging made by press fitting the bottom plate (3),
The thickness of the body part within a certain range from the open end of the body of the container (10) is the thick part (13), and the rolling reduction of this thick part (13) is smaller than the rolling reduction of other parts of the body. Set the bottom plate on this thick part (13)
A metal container for packaging in which (3) is press fitted.
を溶着した板材からカップ状容器を製作する工程と、こ
のカップ状容器をアイアニングにより胴長容器に成形す
る工程と、前記胴長容器の開放端(12)をトリミングして
整形口部(11)に形成し、この整形口部(11)を底板(3) に
よって閉塞して容器主体(10)を構成する工程とからなる
包装用金属容器の製造方法において、カップ状容器を胴
長容器に加工する際、胴長容器の開放端(12)から一定範
囲の胴部肉厚を厚肉部(13)とし、胴長容器成形後この厚
肉部(13)の一部を残すようにトリミングして整形口部(1
1)を形成し、この整形口部(11)に底板(3) を圧入止着し
た包装用金属容器の製造方法。2. A synthetic resin layer (2) on one surface of the metal layer (1)
A step of manufacturing a cup-shaped container from a plate material that is welded, a step of forming this cup-shaped container into a body-long container by ironing, and a shaping mouth portion (11) by trimming the open end (12) of the body-shaped container. In the manufacturing method of the metal container for packaging, which comprises the step of forming the shaping mouth portion (11) with the bottom plate (3) to form the container main body (10), the cup-shaped container is processed into a long-length container. At the time of forming, the thickness of the body part within a certain range from the open end (12) of the body length container is set to the thick part (13), and trimmed so that a part of this thick part (13) is left after forming the body length container. Orthopedic mouth (1
A method for producing a metal container for packaging in which 1) is formed, and the bottom plate (3) is press-fitted and fixed to the shaping opening (11).
０％以下に設定するとともに、その他の胴部の圧下率を
５０％〜７０％に設定した請求項１に記載の包装用金属
容器の製造方法。3. The reduction rate from the material plate thickness of the thick portion (13) is 4
The method for producing a packaging metal container according to claim 1, wherein the rolling reduction is set to 0% or less and the rolling reduction of the other body is set to 50% to 70%.
の合成樹脂層(2) の厚さを５０ミクロン以上に設定した
請求項１または請求項２に記載の包装用金属容器の製造
方法。4. A plate material (P) for manufacturing a cup-shaped container
The method for producing a metal container for packaging according to claim 1 or 2, wherein the thickness of the synthetic resin layer (2) is set to 50 microns or more.
肉部(13)及びこれに続く胴部を合成樹脂層(2) が金属層
(1) に再溶着する温度に一定時間加熱するようにした請
求項１〜請求項３の何れかに記載の包装用金属容器の製
造方法。5. A synthetic resin layer (2) is a metal layer on at least the thick wall portion (13) and the subsequent barrel portion after the final barrel length container is manufactured.
The method for producing a metal container for packaging according to any one of claims 1 to 3, wherein heating is performed for a certain period of time at a temperature at which the (1) is re-welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4213062A JP2926065B2 (en) | 1992-08-10 | 1992-08-10 | Packaging metal container and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4213062A JP2926065B2 (en) | 1992-08-10 | 1992-08-10 | Packaging metal container and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0664645A true JPH0664645A (en) | 1994-03-08 |
| JP2926065B2 JP2926065B2 (en) | 1999-07-28 |
Family
ID=16632904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4213062A Expired - Fee Related JP2926065B2 (en) | 1992-08-10 | 1992-08-10 | Packaging metal container and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2926065B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5662190A (en) * | 1994-05-30 | 1997-09-02 | Kabushiki Kaisha Tec | Self-scanning checkout apparatus having article passage detecting sensor |
| US9173508B2 (en) | 2010-07-08 | 2015-11-03 | Itab Scanflow Ab | Checkout counter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5345182A (en) * | 1976-10-05 | 1978-04-22 | Matsushita Electric Ind Co Ltd | Semiconductor device |
| JPS5393982A (en) * | 1977-01-27 | 1978-08-17 | Toyo Seikan Kaisha Ltd | Can drum formed with extremely thin metal plate and method of producing same |
| JPS5935344A (en) * | 1982-08-21 | 1984-02-27 | ダニ−ル・ジヨセフ・ブラツドリ− | Electro-optical image tube and method of operating same |
| JPH02269647A (en) * | 1989-02-16 | 1990-11-05 | Toyo Seikan Kaisha Ltd | Deep drawing can with thin thickness |
-
1992
- 1992-08-10 JP JP4213062A patent/JP2926065B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5345182A (en) * | 1976-10-05 | 1978-04-22 | Matsushita Electric Ind Co Ltd | Semiconductor device |
| JPS5393982A (en) * | 1977-01-27 | 1978-08-17 | Toyo Seikan Kaisha Ltd | Can drum formed with extremely thin metal plate and method of producing same |
| JPS5935344A (en) * | 1982-08-21 | 1984-02-27 | ダニ−ル・ジヨセフ・ブラツドリ− | Electro-optical image tube and method of operating same |
| JPH02269647A (en) * | 1989-02-16 | 1990-11-05 | Toyo Seikan Kaisha Ltd | Deep drawing can with thin thickness |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5662190A (en) * | 1994-05-30 | 1997-09-02 | Kabushiki Kaisha Tec | Self-scanning checkout apparatus having article passage detecting sensor |
| US9173508B2 (en) | 2010-07-08 | 2015-11-03 | Itab Scanflow Ab | Checkout counter |
| US9301626B2 (en) | 2010-07-08 | 2016-04-05 | Itab Scanflow Ab | Checkout counter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2926065B2 (en) | 1999-07-28 |
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