JP2018103265A - Metal bottle - Google Patents

Metal bottle Download PDF

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JP2018103265A
JP2018103265A JP2018023901A JP2018023901A JP2018103265A JP 2018103265 A JP2018103265 A JP 2018103265A JP 2018023901 A JP2018023901 A JP 2018023901A JP 2018023901 A JP2018023901 A JP 2018023901A JP 2018103265 A JP2018103265 A JP 2018103265A
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thread
stage
bottle
cap
screw
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JP6989406B2 (en
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武志 藍原
Takeshi Aihara
武志 藍原
政臣 田村
Masaomi Tamura
政臣 田村
長谷川　俊幸
Toshiyuki Hasegawa
俊幸 長谷川
健 村瀬
Takeshi Murase
健 村瀬
中村　友彦
Tomohiko Nakamura
友彦 中村
尚也 松本
Naoya Matsumoto
尚也 松本
信宏 篠島
Nobuhiro Shinojima
信宏 篠島
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Toyo Seikan Group Holdings Ltd
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Toyo Seikan Kaisha Ltd
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Priority claimed from JP2016249240A external-priority patent/JP6347337B1/en
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Abstract

PROBLEM TO BE SOLVED: To make it possible to smoothly perform opening/closing of a screw type cap and to certainly perform tight sealing of the cap by a thread part in the case that an inner pressure of a bottle is large.SOLUTION: A metal bottle 1 which has a metal cap 2 at an upper part of a bottomed cylindrical bottle body 1A, and in which a thread part 3 is formed on the metal cap 2, and after formation of the thread part 3, a curl part 4 is formed at a tip side of the metal cap 2. When forming the thread part 3, a height of a thread ridge 3A at a first stage from a tip side in a complete thread part and a height of a thread ridge 3B at a second stage from the tip side are substantially equal to each other, and a distance R1 between an apex 30 of the thread ridge 3A at the first stage and a bottle axis O is so formed as to be smaller than a distance R2 between an apex 30 of the thread ridge 3B at the second stage and the bottle axis O. After formation of the curl part 4, a distance R1' between the apex 30 of the thread ridge 3A at the first stage and the bottle axis O and a distance R2' between the apex 30 of the thread ridge 3B at the second stage and the bottle axis O are so formed as to be substantially equal to each other.SELECTED DRAWING: Figure 3

Description

本発明は、ねじ部を有する金属製ボトルに関するものである。   The present invention relates to a metal bottle having a threaded portion.

金属製ボトルは、有底筒状のボトル本体の上部に口金部を有し、その口金部にねじ式の金属製キャップを被着するものが、飲料製品などのキャップ付き容器として普及している。このような金属製ボトルは、ボトル本体を絞り加工、絞り−しごき加工等を施して有底筒状に形成し、上部を一端縮径して口金部を形成し、この口金部にねじ成形装置によってねじ部を形成している。   Metal bottles that have a base at the top of a bottomed cylindrical bottle body and that have a screw-type metal cap attached to the base are widely used as containers with caps for beverage products and the like. . Such a metal bottle is formed into a bottomed cylindrical shape by subjecting the bottle body to drawing, drawing-squeezing, etc., and the upper part is reduced in diameter to form a base part, and a screw forming device is formed on the base part. The thread part is formed by.

この際に用いられるねじ成形装置は、口金部の内周面に当接する中子と、口金部の外周面に当接する外子によって、口金部の外周に山部と谷部を有するねじ部を形成する。また、このような金属製ボトルにおける口金部の先端部には、カール成形装置によって、先端を外側に折り返したカール部が形成されている。   The screw forming apparatus used at this time has a screw portion having a crest and a trough on the outer periphery of the base portion by a core that contacts the inner peripheral surface of the base portion and an outer core that contacts the outer peripheral surface of the base portion. Form. In addition, a curl portion is formed at the tip end portion of the base portion of such a metal bottle with the tip folded back outward by a curl forming device.

このような従来の金属製ボトルは、口金部にねじ部を形成した後にカール部などを形成する後加工を行うため、後加工による軸方向圧縮荷重により、後加工後にカール部に近い一段目のねじ山の頂部が他のねじ山の頂部より外側に突出する変形を起こし、キャップの開閉を円滑に行うことができなくなる問題があり、これに対する回避案が提案されている。例えば、下記特許文献１の従来技術では、ねじ部の一段目のねじ山（カール部に近いねじ山）の高さを、所定の角度範囲で他段目のねじ山の高さより低く形成し、口金部の先端にカール部を形成した後に、ねじ部の一段目のねじ山の高さと他段目のねじ山の高さが略同等になるようにしている。   Since such a conventional metal bottle performs post-processing to form a curled portion after forming a threaded portion in the base portion, the first stage close to the curled portion after post-processing due to axial compression load by post-processing. There is a problem that the top of the screw thread is deformed so as to protrude outward from the top of the other screw thread, and the cap cannot be smoothly opened and closed, and a workaround for this has been proposed. For example, in the prior art of Patent Document 1 below, the height of the first stage thread of the threaded part (the thread near the curled part) is formed lower than the height of the other stage thread within a predetermined angle range, After the curl portion is formed at the tip of the base portion, the height of the first stage thread of the threaded portion is made substantially equal to the height of the other stage thread.

特開２００８−８７０７１号公報JP 2008-87071 A

前述した従来技術によると、金属製ボトルのねじ部の形成時には、一段目のねじ山の高さを低く形成しておき、後加工でカール部を成形する際の変形によって、ねじ部の一段目のねじ山の高さと他段目のねじ山の高さを略同等の高さとしている。
そして、このような金属製ボトルに内容物を充填後、金属製キャップ（ねじ加工前のカップ状キャップ）を金属製ボトルの口金部に被せ、ねじ加工ロールでキャップを口金部のねじ部の形状に応じた形状にキャッピング加工して被着、密封される。 According to the above-described prior art, when the threaded portion of the metal bottle is formed, the height of the first stage thread is made low, and the first stage of the threaded portion is deformed by the deformation when the curled portion is formed by post-processing. The height of the screw thread and the height of the screw thread at the other stage are substantially the same.
And after filling such a metal bottle with the contents, put the metal cap (cup-shaped cap before threading) on the base part of the metal bottle, and shape the shape of the screw part of the base part with the screw processing roll It is applied and sealed by capping the shape according to the condition.

このように、キャップが金属製ボトルの口金部のねじ部の形状に応じた形状に被着されるが、キャップ付き容器として、ねじ式のキャップの円滑な開閉を保ちつつ、内容物のレトルト殺菌時や炭酸飲料充填時などの内圧が高くなる場合のねじ部によるキャップの密封性（保持力）、キャッピング加工のしやすさ、キャップ再栓の操作性の向上、落下衝撃耐性の向上などがより一層望まれている。   In this way, the cap is attached in a shape corresponding to the shape of the screw portion of the cap portion of the metal bottle, but as a container with a cap, the contents of the cap are retort-sterilized while maintaining a smooth opening and closing of the screw-type cap. Cap sealability (holding power) with threaded parts when the internal pressure becomes high, such as when filling with carbonated drinks, ease of capping, improved operability of cap re-plugging, and improved drop impact resistance More desired.

本発明は、このような問題に対処するために提案されたものである。すなわち、口金部にねじ部を有する金属製ボトルにおいて、ねじ式のキャップの円滑な開閉を保ちつつ、ボトルの内圧が高くなる場合にねじ部によるキャップの密封が確実に行われ、キャッピング加工のしやすさ、キャップ再栓の操作性の向上、落下衝撃耐性の向上などが可能な金属製ボトルを得ること、などが本発明の課題である。   The present invention has been proposed to address such problems. In other words, in a metal bottle having a threaded portion in the cap portion, the cap is securely sealed by the threaded portion when the internal pressure of the bottle increases while maintaining the smooth opening and closing of the threaded cap, and the capping process is performed. An object of the present invention is to obtain a metal bottle that can be easily improved in operability of cap re-plugging, and can be improved in drop impact resistance.

このような課題を解決するために、本発明は、以下の構成を具備するものである。   In order to solve such a problem, the present invention has the following configuration.

有底筒状のボトル本体の上部に口金部を有し、該口金部にねじ部を有すると共に、前記口金部の先端にカール部を有する金属製ボトルであって、完全ねじ部における先端側から一段目のねじ山の高さが、先端側から二段目のねじ山の高さより高く、前記一段目のねじ山の頂部とボトル軸との距離と、前記二段目のねじ山の頂部と前記ボトル軸との距離が略等しいことを特徴とする金属製ボトル。   A metal bottle having a base part at the top of a bottomed cylindrical bottle body, a screw part at the base part, and a curled part at the tip of the base part, from the front end side in the complete screw part The height of the first stage thread is higher than the height of the second stage thread from the tip side, the distance between the top of the first stage thread and the bottle shaft, and the top of the second stage thread A metal bottle characterized in that the distance from the bottle shaft is substantially equal.

本発明の金属製ボトルによれば、ねじ式のキャップの円滑な開閉を保ちつつ、ボトルの内圧が高くなる場合にねじ部によるキャップの密封が確実に行われ、キャッピング加工のしやすさ、キャップ再栓の操作性の向上、落下衝撃耐性の向上などが可能な金属製ボトルを容易に得ることができる。   According to the metal bottle of the present invention, the cap is reliably sealed by the threaded portion when the internal pressure of the bottle becomes high while maintaining the smooth opening and closing of the screw-type cap. It is possible to easily obtain a metal bottle capable of improving the operability of re-plugging and improving the drop impact resistance.

本発明の実施形態に係る金属製ボトルの全体構成を示した説明図である。It is explanatory drawing which showed the whole structure of the metal bottle which concerns on embodiment of this invention. 本発明の実施形態に係る金属製ボトルの口金部にねじ部を形成した状態を示した説明図（部分断面図）である。It is explanatory drawing (partial sectional drawing) which showed the state which formed the thread part in the nozzle | cap | die part of the metal bottle which concerns on embodiment of this invention. 本発明の実施形態に係る金属製ボトルの口金部にねじ部を形成した後にカール部を形成した状態を示した説明図（部分断面図）である。It is explanatory drawing (partial sectional drawing) which showed the state which formed the curl part after forming the thread part in the nozzle | cap | die part of the metal bottle which concerns on embodiment of this invention. 本発明の他の実施形態を示した説明図である（（ａ）が口金部にねじ部を形成してカール部を形成する前の状態、（ｂ）が口金部にねじ部を形成した後にカール部を形成した状態を示している。）。It is explanatory drawing which showed other embodiment of this invention ((a) is the state before forming a screw part in a nozzle | cap | die part, and forming a curl part, (b) after forming a screw part in a nozzle | cap | die part. The state where the curled portion is formed is shown.)

以下、図面を参照して本発明の実施形態を説明する。以下の説明で異なる図における同一符号は同一機能の部位を示しており、各図における重複説明は適宜省略する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same reference numerals in different drawings indicate parts having the same function, and repeated description in each drawing will be omitted as appropriate.

図１に示すように、金属製ボトル１は、ボトル本体１Ａの上部にボトル軸Ｏと同軸の口金部２を有している。そして、口金部２には、ねじ部３が形成され、また、口金部２の先端にはカール部４が形成されている。口金部２におけるねじ部３とカール部４の形成は、前述したように、ねじ成形装置とカール成形装置が用いられる。   As shown in FIG. 1, the metal bottle 1 has a base part 2 coaxial with the bottle axis O at the upper part of the bottle body 1A. A screw part 3 is formed in the base part 2, and a curled part 4 is formed at the tip of the base part 2. As described above, the screw forming device and the curl forming device are used to form the screw portion 3 and the curled portion 4 in the base portion 2.

ねじ成形装置は、口金部２の内周面に中子を当接し、口金部２の外周面に外子を当接することで、口金部２の外周にねじ部３を形成する。カール成形装置は、口金部２にねじ部３を形成した後に、口金部２の先端にカール形状の型を押し当てて、口金部２の先端を外側に折り返してカール部４を形成する。   The screw forming device forms the screw portion 3 on the outer periphery of the base portion 2 by contacting the core with the inner peripheral surface of the base portion 2 and contacting the outer core with the outer peripheral surface of the base portion 2. The curl forming apparatus forms the curled part 4 by forming the screw part 3 in the base part 2 and then pressing a curl-shaped mold against the tip of the base part 2 and folding the tip of the base part 2 outward.

金属製ボトル１の口金部２には、キャップ５が被着される。キャップ５は、例えば、キャップ本体５Ａの下部に、スコア部５Ｂとブリッジ部５Ｃとリング部５Ｄを有している。キャップ５は、金属製ボトル１内に内容物を充填した後に被着され、図示省略のキャッピング装置によって、口金部２に設けたねじ部３に沿ってキャップ本体５Ａにねじ加工が施され、リング部５Ｄがねじ部３の下側にかしめ加工されるアルミニウム等の金属板から成る金属製キャップである。   A cap 5 is attached to the cap portion 2 of the metal bottle 1. The cap 5 includes, for example, a score portion 5B, a bridge portion 5C, and a ring portion 5D at the lower portion of the cap body 5A. The cap 5 is attached after the metal bottle 1 is filled with the contents, and the cap body 5A is threaded along the screw portion 3 provided on the base portion 2 by a capping device (not shown), The portion 5D is a metal cap made of a metal plate such as aluminum that is caulked on the lower side of the screw portion 3.

図２は、金属製ボトル１の口金部２におけるねじ部３の形成状態を示している。ねじ部３は、図示の断面において、先端側から一段目のねじ山３Ａと二段目のねじ山３Ｂが少なくとも形成されている。一段目のねじ山３Ａと二段目のねじ山３Ｂは、それぞれ、外側に突出した頂部３０と内側に突出した底部３１を備えている。   FIG. 2 shows a formation state of the screw part 3 in the base part 2 of the metal bottle 1. In the cross section shown in the figure, the threaded portion 3 is formed with at least a first-stage thread 3A and a second-stage thread 3B from the tip side. Each of the first-stage screw thread 3A and the second-stage screw thread 3B includes a top portion 30 protruding outward and a bottom portion 31 protruding inward.

そして、金属製ボトル１の口金部２においては、後述するねじ部３の完全ねじ部における一段目のねじ山３Ａの高さＴ１と、二段目のねじ山３Ｂの高さＴ２が略等しく、一段目のねじ山３Ａの頂部３０とボトル軸Ｏとの距離Ｒ１が、二段目のねじ山３Ｂの頂部３０とボトル軸Ｏとの距離Ｒ２より小さく（Ｒ１＜Ｒ２）形成されている。   And in the cap part 2 of the metal bottle 1, the height T1 of the first stage thread 3A and the height T2 of the second stage thread 3B in the complete thread part of the thread part 3 to be described later are substantially equal. A distance R1 between the top 30 of the first-stage screw thread 3A and the bottle axis O is smaller than a distance R2 between the top 30 of the second-stage thread 3B and the bottle axis O (R1 <R2).

ここで、「ねじ山の高さ」を、ねじ部３（ねじ山３Ａ，３Ｂ）において、底部３１を連ねた線Ｌと頂部３０との距離の最大値と定義する。また、ねじ部３は、ねじ始点から徐々にねじ山が高くなって略一定のねじ山の高さになるが、ねじ始点から徐々にねじ山が高くなっている範囲を不完全ねじ部、略一定のねじ山の高さの範囲を完全ねじ部と定義する。図２においては、ねじ部３の一段目のねじ山３Ａの高さが、頂部３０と直線Ｌとの距離Ｔ１であり、二段目のねじ山３Ｂの高さが、頂部３０と直線Ｌとの距離Ｔ２になる。本発明の実施形態においては、略等しく（等しくも含む）、（Ｔ１≒Ｔ２、Ｔ１＝Ｔ２）なるように形成されている。   Here, “the height of the thread” is defined as the maximum value of the distance between the line L connecting the bottom 31 and the top 30 in the thread 3 (threads 3A and 3B). Further, the thread portion 3 gradually increases in height from the screw start point to a substantially constant thread height, but the range in which the screw thread gradually increases from the screw start point is an incomplete thread portion, A certain thread height range is defined as a complete thread. In FIG. 2, the height of the first stage thread 3 </ b> A of the screw part 3 is the distance T <b> 1 between the top part 30 and the straight line L, and the height of the second stage thread 3 </ b> B is the top part 30 and the straight line L. Distance T2. In the embodiment of the present invention, they are formed so as to be substantially equal (including equally) (T1≈T2, T1 = T2).

図３は、金属製ボトル１の口金部２におけるカール部４の形成状態を示している。前述したように、カール部４はねじ部３の形成後に形成される。このため、カール部４のカール加工後は、ねじ部３、特に一段目のねじ山３Ａは外側に突出するように変形することになる。そして、カール部４の形成後には、ねじ部３の一段目のねじ山３Ａの頂部３０とボトル軸Ｏとの距離Ｒ１’と、二段目のねじ山３Ｂの頂部３０とボトル軸Ｏとの距離Ｒ２’ が略等しく（等しくも含む）、（Ｒ１’≒Ｒ２’、Ｒ１’＝Ｒ２’）形成される。   FIG. 3 shows the formation state of the curled part 4 in the base part 2 of the metal bottle 1. As described above, the curled portion 4 is formed after the screw portion 3 is formed. For this reason, after the curl processing of the curled portion 4, the threaded portion 3, particularly the first stage thread 3A, is deformed so as to protrude outward. After the curl portion 4 is formed, the distance R1 ′ between the top portion 30 of the first stage thread 3A of the thread portion 3 and the bottle shaft O, and the top portion 30 of the second stage thread 3B and the bottle shaft O The distances R2 ′ are substantially equal (including equal), and (R1′≈R2 ′, R1 ′ = R2 ′) are formed.

このような構成を有する本発明の実施形態によると、ねじ部３の形成後でカール部４の形成前の状態では、ねじ部３の一段目のねじ山３Ａの頂部３０とボトル軸Ｏとの距離Ｒ１が、二段目のねじ山３Ｂの頂部３０とボトル軸Ｏとの距離Ｒ２より小さく（Ｒ１＜Ｒ２）形成されている。このため、カール部４の形成時にねじ部３の一段目のねじ山３Ａが拡径変形した場合にも、ねじ山３Ａの頂部３０がねじ山３Ｂの頂部３０より外側に突出するのを防ぐことができる。これによって、キャップ５の開閉操作を円滑に行うことが可能になる。   According to the embodiment of the present invention having such a configuration, in the state after the formation of the screw portion 3 and before the formation of the curled portion 4, the top portion 30 of the first stage thread 3 </ b> A of the screw portion 3 and the bottle shaft O are formed. The distance R1 is smaller than the distance R2 between the top 30 of the second stage thread 3B and the bottle axis O (R1 <R2). For this reason, even when the first stage thread 3A of the thread part 3 is deformed in diameter expansion when the curled part 4 is formed, the top part 30 of the thread 3A is prevented from projecting outside the top part 30 of the thread 3B. Can do. As a result, the cap 5 can be opened and closed smoothly.

そして、ねじ部３の形成後でカール部４の形成前の状態で、ねじ部３の一段目のねじ山３Ａの高さ（距離Ｔ１）と、二段目のねじ山３Ｂの高さ（距離Ｔ２）が略等しく（等しくも含む）（Ｔ１≒Ｔ２、Ｔ１＝Ｔ２）形成されているので、カール部４の形成後には、一段目のねじ山３Ａが拡径変形することで、一段目のねじ山３Ａの高さ（距離Ｔ１’）が、二段目のねじ山３Ｂの高さ（距離Ｔ２’）より高く形成されることになる（Ｔ１’＞Ｔ２’）。これによって、キャップ５を被着した状態で、一段目のねじ山３Ａの高さ（距離Ｔ１’）を十分に高く設定でき、ボトル内圧が高い場合にも、ねじ部３によるキャップ５の密封性を十分に確保することができる。   The height (distance T1) of the first stage thread 3A and the height (distance) of the second stage thread 3B after the formation of the screw part 3 and before the formation of the curled part 4 T2) is substantially equal (including evenly) (T1≈T2, T1 = T2). After the curled portion 4 is formed, the first-step thread 3A is expanded and deformed, so that The height of the screw thread 3A (distance T1 ′) is formed to be higher than the height of the second screw thread 3B (distance T2 ′) (T1 ′> T2 ′). Thus, with the cap 5 attached, the height (distance T1 ′) of the first stage thread 3A can be set sufficiently high, and the sealing performance of the cap 5 by the screw portion 3 even when the bottle internal pressure is high. Can be secured sufficiently.

また、ねじ部３の一段目のねじ山３Ａの高さを比較的高くすることで、ねじ谷を深くすることができるので、キャッピング加工時に、キャッピング装置の加工ローラがねじ谷に入り易くなり、キャッピング加工がし易くなる。   In addition, since the thread valley can be deepened by relatively increasing the height of the first thread 3A of the thread portion 3, the capping device processing roller easily enters the thread valley during capping. Easy capping.

更には、ねじ部３の一段目のねじ山３Ａの高さを比較的高くすることで、キャップ５を再栓する際に、キャップ５がねじ山を探しやすくなるので、再栓の操作を円滑に行うことが可能になる。   Further, by making the height of the first thread 3A of the first stage of the screw part 3 relatively high, when the cap 5 is re-plugged, the cap 5 can easily find the screw thread, so that the re-plugging operation is smooth. It becomes possible to do.

また、図３に示すように、本発明の実施形態に係る金属製ボトル１は、ボトル軸Ｏに対してねじ部３の底部３１を連ねた線Ｌが上に行く程中心寄りに傾斜している。これによって、金属製ボトル１全体の軸荷重強度が増すことになり、変形し難く、口金部２に形成されたねじ部３の落下時の衝撃耐性を高めることができる。   As shown in FIG. 3, the metal bottle 1 according to the embodiment of the present invention is inclined toward the center as the line L connecting the bottom portion 31 of the screw portion 3 goes upward with respect to the bottle axis O. Yes. As a result, the axial load strength of the entire metal bottle 1 is increased, it is difficult to be deformed, and the impact resistance when the screw part 3 formed on the base part 2 is dropped can be increased.

なお、前述した実施形態では、ねじ部３は一段目のねじ山３Ａと二段目のねじ山３Ｂを有する例を示しているが、本発明におけるねじ部３は、図４に示すように、三段目以上にねじ部（ねじ山）を備えるものであってもよい。   In the above-described embodiment, the screw part 3 shows an example having the first-stage screw thread 3A and the second-stage screw thread 3B. However, as shown in FIG. You may provide a thread part (thread) in the 3rd stage or more.

図４は、ねじ部３が一段目のねじ山３Ｘと二段目のねじ山３Ｙと三段目のねじ山３Ｚを備える例を示してる。この例では、図４（ａ）に示すカール加工前は、三段のねじ山３Ｘ，３Ｙ，３Ｚのねじ山の高さＴ０１，Ｔ０２，Ｔ０３の関係は、（Ｔ０１≒Ｔ０２≒Ｔ０３、Ｔ０１＝Ｔ０２＝Ｔ０３）になっている。また、ねじ山３Ｘ，３Ｙ，３Ｚの頂部３０とボトル軸Ｏとの距離Ｒ０１，Ｒ０２，Ｒ０３の関係は、（Ｒ０１＜Ｒ０２≒Ｒ０３、Ｒ０１＜Ｒ０２＝Ｒ０３）になっている。   FIG. 4 shows an example in which the screw portion 3 includes a first stage thread 3X, a second stage thread 3Y, and a third stage thread 3Z. In this example, before the curl processing shown in FIG. 4A, the relationship between the thread heights T01, T02, T03 of the three-stage threads 3X, 3Y, 3Z is (T01≈T02≈T03, T01 = T02 = T03). Further, the relationship of the distances R01, R02, R03 between the top 30 of the threads 3X, 3Y, 3Z and the bottle axis O is (R01 <R02≈R03, R01 <R02 = R03).

そして、図４（ｂ）に示すカール部４を形成するカール加工後には、三段のねじ山３Ｘ，３Ｙ，３Ｚのねじ山の高さＴ０１’，Ｔ０２’，Ｔ０３’の関係は、（Ｔ０１’＞Ｔ０２’≒Ｔ０３’、Ｔ０１’＞Ｔ０２’ ＝Ｔ０３’）になり、ねじ山３Ｘ，３Ｙ，３Ｚの頂部３０とボトル軸Ｏとの距離Ｒ０１’，Ｒ０２’，Ｒ０３’の関係は、（Ｒ０１’≒Ｒ０２’≒Ｒ０３’、Ｒ０１’＝Ｒ０２’ ＝Ｒ０３’）になっている。   Then, after curling to form the curled portion 4 shown in FIG. 4B, the relationship between the thread heights T01 ′, T02 ′, T03 ′ of the three-stage threads 3X, 3Y, 3Z is (T01 '> T02'≈T03', T01 '> T02' = T03 '), and the relationship between the distances R01', R02 ', R03' between the top 30 of the threads 3X, 3Y, 3Z and the bottle axis O is ( R01′≈R02′≈R03 ′, R01 ′ = R02 ′ = R03 ′).

以上説明したように、本発明の実施形態に係る金属製ボトルの製造方法は、ねじ式のキャップの円滑な開閉を保ちつつ、ボトルの内圧が高くなる場合にねじ部によるキャップの密封が確実に行われ、キャッピング加工のしやすさ、キャップ再栓の操作性の向上、落下衝撃耐性の向上などが可能な金属製ボトルを容易に製造することができる。また、前述した実用的に有利な効果を呈する金属製ボトルとすることができる。   As described above, the method for manufacturing a metal bottle according to the embodiment of the present invention ensures that the cap is sealed by the threaded portion when the internal pressure of the bottle increases while maintaining the smooth opening and closing of the screw-type cap. It is possible to easily manufacture a metal bottle that is easy to capping, improves the operability of cap re-plugging, and improves the drop impact resistance. Moreover, it can be set as the metal bottle which exhibits the practically advantageous effect mentioned above.

１：金属製ボトル，１Ａ：ボトル本体，２：口金部，
３：ねじ部，４：カール部，５：キャップ，５Ａ：キャップ本体，
５Ｂ：スコア部，５Ｃ：ブリッジ部，５Ｄ：リング部，
３０：頂部，３１：底部 1: Metal bottle, 1A: Bottle body, 2: Base part,
3: Screw part, 4: Curl part, 5: Cap, 5A: Cap body,
5B: Score part, 5C: Bridge part, 5D: Ring part,
30: Top, 31: Bottom

Claims (1)

有底筒状のボトル本体の上部に口金部を有し、該口金部にねじ部を有すると共に、前記口金部の先端にカール部を有する金属製ボトルであって、
完全ねじ部における先端側から一段目のねじ山の高さが、先端側から二段目のねじ山の高さより高く、前記一段目のねじ山の頂部とボトル軸との距離と、前記二段目のねじ山の頂部と前記ボトル軸との距離が略等しいことを特徴とする金属製ボトル。 A metal bottle having a base part at the top of a bottomed cylindrical bottle body, having a screw part in the base part, and having a curled part at the tip of the base part,
The height of the first stage thread from the tip side in the complete thread part is higher than the height of the second stage thread from the tip side, the distance between the top of the first stage thread and the bottle shaft, and the second stage A metal bottle characterized in that the distance between the top of the thread of the eye and the bottle shaft is substantially equal.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004035036A (en) * 2002-07-02 2004-02-05 Mitsubishi Materials Corp Metallic bottle can
JP2004148403A (en) * 2002-09-02 2004-05-27 Takeuchi Press Ind Co Ltd Method for manufacturing metallic container and metallic container
WO2015145074A1 (en) * 2014-03-26 2015-10-01 Ardagh Mp West France Metal container comprising a neck capable of receiving a screw cap-type sealing element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004035036A (en) * 2002-07-02 2004-02-05 Mitsubishi Materials Corp Metallic bottle can
JP2004148403A (en) * 2002-09-02 2004-05-27 Takeuchi Press Ind Co Ltd Method for manufacturing metallic container and metallic container
WO2015145074A1 (en) * 2014-03-26 2015-10-01 Ardagh Mp West France Metal container comprising a neck capable of receiving a screw cap-type sealing element

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