JP2939898B2 - Method for producing cap for carbonated beverage bottle and cap for carbonated beverage bottle - Google Patents
Method for producing cap for carbonated beverage bottle and cap for carbonated beverage bottleInfo
- Publication number
- JP2939898B2 JP2939898B2 JP7137453A JP13745395A JP2939898B2 JP 2939898 B2 JP2939898 B2 JP 2939898B2 JP 7137453 A JP7137453 A JP 7137453A JP 13745395 A JP13745395 A JP 13745395A JP 2939898 B2 JP2939898 B2 JP 2939898B2
- Authority
- JP
- Japan
- Prior art keywords
- plug
- cap
- synthetic resin
- outer plug
- carbonated beverage
- 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.)
- Expired - Lifetime
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Closures For Containers (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明はラムネ瓶用キャップその
他の炭酸飲料瓶用キャップの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing caps for ramune bottles and other caps for carbonated beverage bottles.
【0002】[0002]
【従来の技術】従来、ラムネ瓶を封緘する合成樹脂製キ
ャップは公知である。このキャップは、外栓と中栓とを
一体化した蓋であって、外栓の内面がラムネ瓶口の外面
と係合し、中栓がラムネ瓶口に挿入されて、中栓の内面
に設けた突起部がラムネ玉を支えて、瓶口を密封してい
た。2. Description of the Related Art Conventionally, a synthetic resin cap for sealing a ramune bottle has been known. This cap is a lid in which the outer plug and the inner plug are integrated, the inner surface of the outer plug is engaged with the outer surface of the ramune bottle opening, and the inner plug is inserted into the ramune bottle opening, and the inner surface of the inner plug is The projections provided supported the ramune balls and sealed the bottle mouth.
【0003】[0003]
【発明が解決しようとする課題】上記ラムネ瓶用キャッ
プは、その外栓を瓶口に被せて掛着するが、その際、炭
酸ガスによる内圧に対抗できる強度を有する構成材と、
その成形の際の適切な条件設定とが求められる。そのた
め、外栓は硬質プラスチック材により成形されていた。
中栓は瓶口の中で外栓と共働して、ラムネ玉が飛び出さ
ないようにラムネ玉を支えていた。一方、飲用の際には
このラムネ玉を瓶中に突き落とすから、この二つの作用
を満足させるために、中栓には適切な柔軟性を有する構
成材と、その成形の際の適切な条件設定とが求められ
る。そのため、中栓は柔軟性を有するプラスチック材に
より成形されていた。The above-mentioned cap for a ramune bottle is covered with its outer cap over the bottle mouth. At this time, a component having a strength capable of withstanding the internal pressure of carbon dioxide gas,
Appropriate condition settings for the molding are required. For this reason, the outer plug has been formed of a hard plastic material.
The inner stopper cooperated with the outer stopper in the bottle mouth to support the ramune ball so that it did not pop out. On the other hand, when drinking, this ramune ball is pushed down into the bottle, so in order to satisfy these two functions, the inner plug is made of a component having appropriate flexibility, and the appropriate conditions are set during molding. Is required. Therefore, the inner plug has been formed of a plastic material having flexibility.
【0004】上記の要件を満たすためには構成材の選択
とともに、この一体化したキャップを適切な条件設定に
よって精度よくしかもバラツキなく大量に経済的に成形
する製造方法が重要な課題になる。さらに、このキャッ
プは、成形温度や流動特性の異なる硬質プラスチック材
と柔軟性を有するプラスチック材とを使い分けてそれぞ
れの成形条件に合わせて成形しなければならないという
問題点があった。本発明は、ラムネ飲料等の炭酸飲料の
瓶を封緘するキャップを精度よくバラツキなく大量に経
済的に成形する新規な炭酸飲料瓶用キャップの製造方法
を提供するとともに、この新規な製造方法によって製造
される新しい炭酸飲料瓶用キャップを提供することを目
的とする。In order to satisfy the above requirements, it is important to select a constituent material and to manufacture the integrated cap accurately and economically in large quantities without variation by setting appropriate conditions. Further, this cap has a problem that it is necessary to selectively use a hard plastic material having different molding temperatures and flow characteristics and a plastic material having flexibility in accordance with each molding condition. The present invention provides a novel method for producing a cap for a carbonated beverage bottle, which is capable of accurately and economically molding a cap for sealing a bottle of a carbonated beverage such as a ramune beverage with high precision and without variation, and producing the cap using this novel production method. To provide a new cap for carbonated beverage bottles.
【0005】[0005]
【課題を解決するための手段】上記の目的を達成するた
めになされた本発明方法は、外栓を成形するためのキャ
ビティを設けた固定側金型に移動側金型を差し入れ、こ
のキャビティ内に合成樹脂を注入して外栓を成形する第
1工程と、キャップを成形するためのキャビティを設け
た別の固定側金型に上記第1工程で成形した外栓を移し
変え嵌め込んで、別の移動側金型を該外栓の中に差し入
れ、合成樹脂を注入して中栓を該外栓の上部内面に融着
させて成形し、外栓と中栓とを一体化させてキャップを
成形することを特徴とする。In order to achieve the above-mentioned object, the method of the present invention comprises inserting a movable mold into a fixed mold provided with a cavity for molding an outer plug. A first step of injecting a synthetic resin into the outer plug to form an outer plug, and transferring the outer plug formed in the first step to another fixed mold having a cavity for forming a cap, and fitting the outer plug therein. Another moving side mold is inserted into the outer plug, a synthetic resin is injected, the inner plug is fused to the upper inner surface of the outer plug, and molded, and the outer plug and the inner plug are integrated into a cap. Is molded.
【0006】外栓は硬質合成樹脂を用いて成形し、中栓
は柔軟性を有する合成樹脂を用いて成形するとともに、
外栓と中栓との間に瓶口の受容部を形成し、中栓にラム
ネ玉を気密に収められるように中栓を成形することを特
徴とする。The outer plug is formed using a hard synthetic resin, and the inner plug is formed using a flexible synthetic resin.
A bottle mouth receiving portion is formed between the outer plug and the inner plug, and the inner plug is molded so that the ramune ball can be hermetically stored in the inner plug.
【0007】[0007]
【作用】外栓を成形するためのキャビティを設けた固定
側金型に移動側金型を差し入れ、このキャビティ内に合
成樹脂を注入して外栓を成形する第1工程と、キャップ
を成形するためのキャビティを設けた別の固定側金型に
上記第1工程で成形した外栓を移し変え嵌め込んで、別
の移動側金型を該外栓の中に差し入れ、合成樹脂を注入
して中栓を該外栓の上部内面に融着させて成形し、外栓
と中栓とを一体化させてキャップを成形するようにして
あるから、第1工程に用いる金型は硬質合成樹脂を成形
するのに適した成形温度と流動条件に設定でき、第2工
程に用いる金型は柔軟性を有する合成樹脂を成形するの
に適した成形温度と流動条件に設定できるので、成形加
工を連携して行うことにより、キャップを成形加工する
ことができる。The moving mold is inserted into a fixed mold provided with a cavity for molding an outer cap, a synthetic resin is injected into the cavity to form an outer cap, and a cap is formed. The outer plug formed in the first step is transferred and fitted into another fixed-side mold having a cavity therefor, another moving-side mold is inserted into the outer plug, and synthetic resin is injected. Since the inner plug is fused to the upper inner surface of the outer plug and molded, and the outer plug and the inner plug are integrated to form a cap, the mold used in the first step is made of a hard synthetic resin. The molding temperature and flow conditions suitable for molding can be set, and the mold used for the second step can be set to the molding temperature and flow conditions suitable for molding a flexible synthetic resin. By doing so, the cap can be molded.
【0008】[0008]
【実施例】本発明炭酸飲料瓶用キャップの製造方法を図
1乃至図5を用いて説明する。先ず図5により、本発明
製造方法によって成形した炭酸飲料瓶用キャップ1を説
明する。このキャップ1は、第1工程において硬質合成
樹脂を用いて成形した外栓2と、第2工程においてこの
外栓2の上部内面5に融着して成形した柔軟性を有する
中栓6とが一体となって成形されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for producing a carbonated beverage bottle cap according to the present invention will be described with reference to FIGS. First, the cap 1 for a carbonated beverage bottle formed by the manufacturing method of the present invention will be described with reference to FIG. The cap 1 comprises an outer plug 2 molded using a hard synthetic resin in a first step, and a flexible inner plug 6 fused and molded to an upper inner surface 5 of the outer plug 2 in a second step. It is molded integrally.
【0009】上記外栓2は、ほぼ倒立椀状に成形してあ
り、その僅かに外向きに湾曲した上面4の中心には上部
開口縁3によって小円状の上部開口が形成され、その下
部には下部開口縁3’によって長い口径の下部開口が形
成されている。また、中栓6は筒状に成形してあり、そ
の上下の開口が外栓2の上部開口と下部開口とにそれぞ
れ相対している。外栓2の内面と、中栓6の外面との間
の隙間は瓶口の受容部17である。また、中栓6の内面
には、この内面を周回する角部19と断面V字状の突起
部20とを間隔をおいて形成してある。この角部19と
突起部20とはラムネ玉を気密に挟持して中栓6に収め
るためのものである。外栓2は低圧重合法の高密度ポリ
エチレン樹脂を硬質合成樹脂として用い成形してあり、
中栓6は高圧重合法の低密度ポリエチレン樹脂とポリオ
レフィン系高密度樹脂との等分混合樹脂を柔軟性を有す
る合成樹脂として用い成形してある。なお、外栓と中栓
を構成する合成樹脂は上記例に限らない。例えば、適切
な性質や性能を有するコンパウンドを用いてもよい。The outer plug 2 is formed in a substantially inverted bowl shape. A small circular upper opening is formed at the center of a slightly outwardly curved upper surface 4 by an upper opening edge 3, and a lower portion thereof is formed. Has a long lower opening formed by a lower opening edge 3 '. The inner plug 6 is formed in a cylindrical shape, and upper and lower openings thereof are opposed to an upper opening and a lower opening of the outer plug 2, respectively. The gap between the inner surface of the outer plug 2 and the outer surface of the inner plug 6 is a bottle mouth receiving portion 17. Further, on the inner surface of the inner plug 6, a corner portion 19 orbiting the inner surface and a projection 20 having a V-shaped cross section are formed at an interval. The corners 19 and the projections 20 are for holding the ramune balls in the inner stopper 6 in an airtight manner. The outer plug 2 is molded using a high-density polyethylene resin of a low-pressure polymerization method as a hard synthetic resin,
The inner plug 6 is formed by using an equally mixed resin of a low-density polyethylene resin and a polyolefin-based high-density resin obtained by a high-pressure polymerization method as a flexible synthetic resin. The synthetic resin forming the outer plug and the inner plug is not limited to the above example. For example, a compound having appropriate properties and performance may be used.
【0010】図1は、上記外栓2を成形する第1工程に
用いる固定側金型7と移動側金型9とを示す。固定側金
型7には外栓2を成形するためのキャビティ8をほぼ椀
状に形設してあり、このキャビティ8の中央部に円形の
小突部13を設けてある。この固定側金型7に、円柱状
の移動側金型9が固定側金型7に接した製品突出プレー
ト10を貫通して、その先端部の成形型11をキャビテ
ィ8に差し入れてあり、この成形型11の先端部に設け
た拡径部12から突設した円形の小突部12Cが上記小
突部13の先端面と当接している。FIG. 1 shows a fixed mold 7 and a movable mold 9 used in the first step of molding the outer plug 2. A cavity 8 for molding the outer plug 2 is formed in the fixed mold 7 in a substantially bowl shape, and a small circular projection 13 is provided at the center of the cavity 8. In this fixed mold 7, a cylindrical moving mold 9 penetrates a product protruding plate 10 in contact with the fixed mold 7, and a forming mold 11 at the tip thereof is inserted into the cavity 8. A circular small protrusion 12 </ b> C protruding from the enlarged diameter portion 12 provided at the front end of the molding die 11 is in contact with the front end surface of the small protrusion 13.
【0011】また、上記固定側金型7には、硬質合成樹
脂をキャビティ8に注入するためのスプルー14を、小
突部13を貫通して設けてあり、このスプルー14は移
動側金型9の小突部12Cを貫通し、その先端16が移
動側金型9の拡径部12に進入した細長い孔状をなして
ある。このスプルー14は、その先端部にランナーゲー
ト21、21を連通して相反する向きに形成してあり、
その先端細孔を移動側金型9の小突部12Cの周面上端
に開口させてある。このランナーゲート21、21の先
端細孔間の距離が外栓2の上面4の開口の口径に相当す
る。The fixed mold 7 is provided with a sprue 14 for injecting the hard synthetic resin into the cavity 8 through the small projection 13. The sprue 14 is provided on the movable mold 9 The tip 16 is formed in an elongated hole shape that penetrates into the enlarged diameter portion 12 of the movable side die 9. The sprue 14 is formed in the opposite direction by connecting the runner gates 21 and 21 to the tip thereof.
The tip end pore is opened at the upper end of the peripheral surface of the small projection 12C of the movable mold 9. The distance between the tip pores of the runner gates 21 corresponds to the diameter of the opening on the upper surface 4 of the outer plug 2.
【0012】上記スプルー14から硬質合成樹脂をラン
ナーゲート21を経てキャビティ8に注入し、所定の温
度で成形すれば、固定側金型7と移動側金型9との共働
により外栓2を成形できる。図3は、上記により成形し
た外栓2を、常法に従って移動側金型9を成形品ととも
に引き出してから、固定側金型7から取り出したままの
状態を示す。注入口を抜き去って外栓2の成形が終了す
る。When the hard synthetic resin is injected from the sprue 14 into the cavity 8 through the runner gate 21 and molded at a predetermined temperature, the outer plug 2 is cooperated with the fixed mold 7 and the movable mold 9 to cooperate. Can be molded. FIG. 3 shows a state in which the outer plug 2 molded as described above is pulled out of the fixed die 7 together with the movable die 9 together with the molded product according to a conventional method. The injection port is pulled out, and the molding of the outer plug 2 is completed.
【0013】次に、上記外栓2を、別の固定側金型22
に移し変え、別の移動側金型23との共働により、炭酸
飲料瓶用キャップ1を成形する第2工程を図2に沿って
説明する。この固定側金型22のキャビティ8の中央部
に円形の突部13Aを設けてある。一方、移動側金型2
3は、製品突出プレート10を貫通した円筒状のコアス
リーブピン25と、このコアスリーブピン25に挿通し
た円柱状のコアピン26とにより形成してある。図2
中、外栓2はその上面4の開口を、上記突部13Aに嵌
め込んで、外栓2全体を固定側金型22のキャビティ8
に嵌め入れてある。そこで、外栓2の上部内面5が上記
のコアスリーブピン25の先端とコアピン26の先端と
に相対している。外栓2の中に差し入れたコアスリーブ
ピン25のリング状の幅狭の先端面25Aは、上部内面
5の外周縁に当接しており、同じくコアピン26の小円
状の先端面は、上部開口縁3と突部13Aの下面に当接
している。Next, the outer plug 2 is connected to another stationary mold 22.
The second step of molding the carbonated beverage bottle cap 1 in cooperation with another moving side mold 23 will be described with reference to FIG. A circular projection 13A is provided at the center of the cavity 8 of the fixed mold 22. On the other hand, the moving side mold 2
3 is formed by a cylindrical core sleeve pin 25 penetrating the product projecting plate 10 and a cylindrical core pin 26 inserted through the core sleeve pin 25. FIG.
The inside of the outer plug 2 is fitted with the opening of the upper surface 4 into the above-mentioned projection 13A, and the whole of the outer plug 2 is cavity 8 of the fixed mold 22.
It is fitted in. Therefore, the upper inner surface 5 of the outer plug 2 faces the tip of the core sleeve pin 25 and the tip of the core pin 26. The ring-shaped narrow distal end surface 25A of the core sleeve pin 25 inserted into the outer plug 2 is in contact with the outer peripheral edge of the upper inner surface 5, and the small circular distal end surface of the core pin 26 also has an upper opening. The edge 3 is in contact with the lower surface of the protrusion 13A.
【0014】このコアスリーブピン25の内面が中栓6
の外面を形成し、同じくコアピン26の外面が中栓6の
内面を形成する。コアスリーブピン25の内面の上端部
は拡径部になっており、この内面はその上端部に連なっ
た段差27、段差28によって下方に向かって順次縮径
している。コアピン26の上部の外面には、この外面を
周回する内向き角部29と、この角部29と間隔をおい
た下方に同じく外面を周回する断面V字状の溝条30を
形成してある。この内向き角部29は上記内周面の拡径
部の近傍と相対しており、溝条30は段差28より下方
の最縮径部に相対している。上記の構成により、図5図
示の通り、中栓6の外面は、上記の拡径部、段差27、
段差28の順に下方に向かって縮径している。また、内
向き角部29が中栓6の内面の角部19を形成し、溝条
30が同じく断面V字状の突起部20を形成している。The inner surface of the core sleeve pin 25 is
The outer surface of the core pin 26 also forms the inner surface of the inner plug 6. The upper end of the inner surface of the core sleeve pin 25 is an enlarged diameter portion, and the inner surface is gradually reduced in diameter by a step 27 and a step 28 connected to the upper end. On the outer surface of the upper part of the core pin 26, an inward corner portion 29 surrounding the outer surface and a groove 30 having a V-shaped cross section surrounding the outer surface are formed below the corner portion 29 at a distance from the corner portion 29. . The inward corner portion 29 faces the vicinity of the enlarged diameter portion on the inner peripheral surface, and the groove 30 faces the smallest diameter portion below the step 28. With the above configuration, as shown in FIG. 5, the outer surface of the inner plug 6 has the above-described enlarged portion, the step 27,
The diameter decreases in the order of the steps 28. Further, the inward corner portion 29 forms a corner portion 19 on the inner surface of the inner plug 6, and the groove 30 forms a projection portion 20 also having a V-shaped cross section.
【0015】上記の固定側金型22にはスプルー14を
形成してあり、このスプルー14は固定側金型22の突
部13Aを貫通し、移動側金型23のコアピン26の先
端部に進入している。そこで、スプルー14はコアピン
26の先端部にランナーゲート24を連通して設けてあ
り、その先端細孔はコアピン26の上記先端部の周面で
内向き角部29と溝条30とのほぼ中間位置に開口させ
てある。上記スプルー14から柔軟性を有する合成樹脂
をランナーゲート24を経て、コアスリーブピン25と
コアピン26及び外栓2の上部内面5とにより囲まれた
区画に注入し所定の温度で成形すれば、中栓6のフラン
ジ状の上端拡径部の幅広リング状の上面6Aが、外栓2
の上部内面5と融着し、外栓2と中栓6とが一体化した
炭酸飲料瓶用キャップ1を成形できる。図4は、上記に
より成形したキャップを常法に従って固定側金型22か
ら取り出したままの状態を示す。ここから注入口を抜き
去って、炭酸飲料瓶用キャップ1の成形が終了する。The fixed mold 22 has a sprue 14 formed therein. The sprue 14 penetrates the projection 13A of the fixed mold 22 and enters the tip of the core pin 26 of the movable mold 23. doing. Therefore, the sprue 14 is provided so as to communicate with the runner gate 24 at the tip of the core pin 26, and the tip of the sprue 14 is located approximately at the middle of the inward corner 29 and the groove 30 on the peripheral surface of the tip of the core pin 26. It is open at the location. If a synthetic resin having flexibility is injected from the sprue 14 through the runner gate 24 into a section surrounded by the core sleeve pin 25, the core pin 26 and the upper inner surface 5 of the outer plug 2, and molded at a predetermined temperature, The wide ring-shaped upper surface 6A of the flange-shaped upper end enlarged diameter portion of the plug 6 is
The inner cap 5 for the carbonated beverage bottle can be molded by fusing with the upper inner surface 5 of the cap, and the outer plug 2 and the inner plug 6 are integrated. FIG. 4 shows a state in which the cap formed as described above is taken out of the fixed mold 22 according to a conventional method. The injection port is pulled out from here, and the molding of the carbonated beverage bottle cap 1 is completed.
【0016】図6及び図7に本発明炭酸飲料瓶用キャッ
プの製造方法の別の実施例が示してある。この別の実施
例に示す方法は、基本的には図1及び図2に示した方法
と同様であり、従って図1及び図2に示した符号と同一
符号を付した部分は同一部材である。この図6及び図7
に示した実施例の特徴とするところは、第1工程の移動
金型9の上部拡径部の上面周縁に、リング状の凸条30
を設けてあり、これによって外栓2の上部内面5の周縁
にリング状の凹溝31を形成することである。そして図
7に示す第2工程では、外栓2の上記凹溝31中にコア
スリーブピン25の先端25Aを介入させ、これによっ
て、中栓を構成する柔軟性を有する合成樹脂の注入の
際、コアスリーブピン25の先端25A部位からの樹脂
の逃げを防止すると共に、中栓6の上面6Aと外栓2の
上部内面5との圧着度を高め、これらの間の融着を強く
したものである。FIGS. 6 and 7 show another embodiment of the method for manufacturing a cap for a carbonated beverage bottle according to the present invention. The method shown in this alternative embodiment is basically the same as the method shown in FIGS. 1 and 2, and therefore, the portions denoted by the same reference numerals as those shown in FIGS. 1 and 2 are the same members. . 6 and 7
The characteristic feature of the embodiment shown in FIG. 1 is that a ring-shaped ridge 30 is formed on the upper surface periphery of the upper enlarged diameter portion of the movable mold 9 in the first step.
This is to form a ring-shaped concave groove 31 on the periphery of the upper inner surface 5 of the outer plug 2. In the second step shown in FIG. 7, the distal end 25A of the core sleeve pin 25 is interposed in the concave groove 31 of the outer plug 2, whereby the flexible synthetic resin constituting the inner plug is injected. This prevents resin from escaping from the tip 25A of the core sleeve pin 25, increases the degree of crimping between the upper surface 6A of the inner plug 6 and the upper inner surface 5 of the outer plug 2, and strengthens the fusion between them. is there.
【0017】図8に上記図6及び図7で示した製造方法
によって製造された本発明炭酸飲料瓶用キャップの断面
が示してある。この図8に示された本発明炭酸飲料瓶用
キャップは、基本的には図5に示されたキャップと同様
なものであるから、図5と同一符号をもって示した部分
は同一部分を示す。そしてこの図8に示される本発明炭
酸飲料瓶用キャップの特徴とするところは、外栓2の内
部上面6Aの周縁であって中栓2の外栓の内部上面に融
着された上縁に接してリング状の凹溝31が形成されて
いる点である。即ち、製造時に外栓の該凹溝31内にコ
アスリーブピンの先端25Aを介入し、中栓樹脂注入時
の樹脂の逃げを防止し、中栓と外栓との圧着強度が高め
られ、これらの一体化が強固になされていることが特徴
である。FIG. 8 shows a cross section of the cap for a carbonated beverage bottle of the present invention manufactured by the manufacturing method shown in FIGS. The cap for a carbonated beverage bottle of the present invention shown in FIG. 8 is basically the same as the cap shown in FIG. 5, and the parts denoted by the same reference numerals as those in FIG. 5 indicate the same parts. The feature of the carbonated beverage bottle cap of the present invention shown in FIG. 8 is that the upper edge fused to the inner upper surface of the outer plug 2 is the peripheral edge of the inner upper surface 6A of the outer plug 2. This is a point that a ring-shaped concave groove 31 is formed in contact therewith. That is, at the time of manufacturing, the tip 25A of the core sleeve pin is interposed in the concave groove 31 of the outer plug to prevent the resin from escaping at the time of injecting the inner plug resin, and the crimp strength between the inner plug and the outer plug is increased. Is characterized by the fact that the integration of
【0018】[0018]
【発明の効果】本発明炭酸飲料瓶用キャップの製造方法
は、外栓を成形するためのキャビティを設けた固定側金
型に移動側金型を差し入れ、このキャビティ内に合成樹
脂を注入して外栓を成形する第1工程と、キャップを成
形するためのキャビティを設けた別の固定側金型に上記
第1工程で成形した外栓を移し変え嵌め込んで、外栓が
セットされたままの状態の固定側金型に別の移動側金型
を該外栓の中に差し入れ、合成樹脂を注入して中栓を該
外栓の上部内面に融着させて成形し、外栓と中栓とを一
体化させてキャップを成形するようにしてあるから、外
栓と中栓とを一体化した炭酸飲料用キャップを容易に製
造できる効果を有する。また、外栓を成形する第1工程
と、中栓を外栓に融着して成形する第2工程との成形条
件を、それぞれ別々に設定し管理して成形装置を運転で
きる効果も有する。According to the method for producing a cap for a carbonated beverage bottle of the present invention, a movable mold is inserted into a fixed mold provided with a cavity for molding an outer plug, and a synthetic resin is injected into the cavity. A first step of forming the outer plug, and the outer plug formed in the first step is transferred to another stationary mold having a cavity for forming a cap, and is fitted. Into the stationary mold in the state described above, insert another moving mold into the outer plug, inject synthetic resin, fuse the inner plug to the upper inner surface of the outer plug, mold the outer plug and the inner plug. Since the cap is formed by integrating the stopper, there is an effect that the cap for carbonated beverages in which the outer stopper and the inner stopper are integrated can be easily manufactured. Further, there is an effect that the molding apparatus can be operated by separately setting and managing the molding conditions of the first step of forming the outer plug and the second step of fusing the inner plug to the outer plug to form.
【0019】成形温度や温度流動特性の異なった二種類
の合成樹脂各々に適した成形条件を別々に設定し、この
条件を維持したまま炭酸飲料瓶用キャップを成形できる
から、工程が少なくてすみ、精度よく成形でき外形や寸
法にバラツキのない製品を高い歩留りで連続的に製造で
きる効果を有する。Since the molding conditions suitable for each of the two types of synthetic resins having different molding temperatures and temperature-flow characteristics can be separately set, and the caps for the carbonated beverage bottle can be molded while maintaining these conditions, the number of steps is small. In addition, it has the effect that a product which can be molded with high precision and has no variation in the outer shape and dimensions can be continuously produced at a high yield.
【図1】本発明炭酸飲料瓶用キャップの製造方法の第1
工程を示す断面図FIG. 1 shows a first method for producing a carbonated beverage bottle cap according to the present invention.
Sectional view showing process
【図2】炭酸飲料瓶用キャップの製造方法の第2工程を
示す断面図FIG. 2 is a sectional view showing a second step of the method for producing a carbonated beverage bottle cap.
【図3】図1図示の第1工程で成形されたままの外栓を
示す断面図FIG. 3 is a cross-sectional view showing the outer plug as formed in the first step shown in FIG. 1;
【図4】図2図示の第2工程で成形されたままのキャッ
プを示す断面図FIG. 4 is a cross-sectional view showing the cap as formed in the second step shown in FIG. 2;
【図5】炭酸飲料瓶用キャップを示す断面図FIG. 5 is a sectional view showing a cap for a carbonated beverage bottle.
【図6】本発明炭酸飲料瓶用キャップの製造方法の別の
実施例の第1工程を示す断面図FIG. 6 is a sectional view showing a first step of another embodiment of the method for producing a carbonated beverage bottle cap of the present invention.
【図7】同じく別の実施例の第2工程を示す断面図FIG. 7 is a cross-sectional view showing a second step of another embodiment.
【図8】上記図6,図7の方法によって製造された本発
明炭酸飲料瓶用キャップの断面図FIG. 8 is a cross-sectional view of the cap for a carbonated beverage bottle of the present invention manufactured by the method of FIGS. 6 and 7;
1 炭酸飲料瓶用キャップ 2 外栓 5 上部内面 6 中栓 6A 上面 7 固定側金型 8 キャビティ 9 移動側金型 11 成形部 12 拡径部 13 小突部 14 スプルー 21 ランナーゲート 22 固定側金型 25 コアスリーブピン 25A 先端面 26 コアピン 30 凸条 31 凹溝 DESCRIPTION OF SYMBOLS 1 Cap for carbonated beverage bottles 2 Outer stopper 5 Upper inner surface 6 Inner stopper 6A Upper surface 7 Fixed side mold 8 Cavity 9 Moving side mold 11 Molding section 12 Large diameter section 13 Small protrusion 14 Sprue 21 Runner gate 22 Fixed side mold 25 core sleeve pin 25A distal end surface 26 core pin 30 ridge 31 groove
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI // B65D 41/28 B65D 41/28 C 47/26 47/26 S B29L 31:56 (58)調査した分野(Int.Cl.6,DB名) B29C 45/00 - 45/84 B29C 33/42 B29C 39/10 B29C 39/26 B29D 31/00 B65D 41/28 B65D 47/26 ────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. 6 Identification symbol FI // B65D 41/28 B65D 41/28 C 47/26 47/26 SB29L 31:56 (58) Fields surveyed (Int.Cl. . 6, DB name) B29C 45/00 - 45/84 B29C 33/42 B29C 39/10 B29C 39/26 B29D 31/00 B65D 41/28 B65D 47/26
Claims (5)
た固定側金型に移動側金型を差し入れ、このキャビティ
内に合成樹脂を注入して外栓を成形する第1工程と、キ
ャップを成形するためのキャビティを設けた別の固定側
金型に上記第1工程で成形した外栓を移し変え嵌め込ん
で、別の移動側金型を該外栓の中に差し入れ、合成樹脂
を注入して中栓を該外栓の上部内面に融着させて成形す
る第2工程とからなり、外栓と中栓とを一体化させてキ
ャップを成形することを特徴とする炭酸飲料瓶用キャッ
プの製造方法。1. A first step in which a movable mold is inserted into a fixed mold provided with a cavity for molding an outer plug, and a synthetic resin is injected into the cavity to form an outer plug. Transfer the outer plug formed in the first step into another fixed-side mold provided with a cavity for molding, insert the outer-side mold into the outer plug, and inject the synthetic resin. And fusing the inner plug to the upper inner surface of the outer plug to form the cap. The cap is formed by integrating the outer plug and the inner plug to form a cap. Manufacturing method.
の上面周縁にリング状の凸条を設けて外栓の上部内面の
周縁にリング状の凹溝を形成し、このリング状の凹溝内
に上記第2工程の別の移動側金型を構成するコアースリ
ーブピンの先端を介入するようにしてあることを特徴と
する上記請求項1記載の炭酸飲料瓶用キャップの製造方
法。2. A ring-shaped convex groove is formed on the upper peripheral edge of the upper enlarged-diameter portion of the moving-side mold in the first step to form a ring-shaped concave groove on the upper inner peripheral edge of the outer plug. 2. The cap for a carbonated beverage bottle according to claim 1, wherein the tip of a core sleeve pin constituting another moving side mold in the second step is interposed in the concave groove. Method.
栓は柔軟性を有する合成樹脂を用いて成形するととも
に、外栓と中栓との間に瓶口の受容部を形成し、中栓に
ラムネ玉を気密に収められるように中栓を成形すること
を特徴とする請求項1又は2記載の炭酸飲料瓶用キャッ
プの製造方法。3. The outer plug is formed using a hard synthetic resin, the inner plug is formed using a flexible synthetic resin, and a receiving portion of a bottle mouth is formed between the outer plug and the inner plug. The method for producing a cap for a carbonated beverage bottle according to claim 1 or 2, wherein the inner plug is formed so that the ramune balls can be hermetically stored in the inner plug.
を有し、倒立椀状に形成された外栓と、該外栓より柔軟
な合成樹脂からなり、該外栓の上部内面に一体的に融着
した略筒状の中栓とからなり、該外栓の上部内面の周縁
に該中栓の上部と接する凹溝が形成されていることを特
徴とする炭酸飲料瓶用キャップ。4. An outer cap formed of a hard synthetic resin, having an upper opening at the center and formed in an inverted bowl shape, and a synthetic resin softer than the outer cap, and integrally formed on an upper inner surface of the outer cap. A cap for a carbonated beverage bottle, comprising: a substantially cylindrical inner plug fused to an inner plug, wherein a concave groove in contact with an upper portion of the inner plug is formed on a peripheral edge of an upper inner surface of the outer plug.
入された中栓用合成樹脂の逃げが阻止され、中栓の外栓
への圧着が強力になされた上記請求項4記載の炭酸飲料
瓶用キャップ。5. The inner mold according to claim 4, wherein a movable mold is interposed in the groove to prevent the injected synthetic resin for the inner plug from escaping, and the inner plug is strongly pressed to the outer plug. Cap for soda drink bottle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7137453A JP2939898B2 (en) | 1995-05-12 | 1995-05-12 | Method for producing cap for carbonated beverage bottle and cap for carbonated beverage bottle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7137453A JP2939898B2 (en) | 1995-05-12 | 1995-05-12 | Method for producing cap for carbonated beverage bottle and cap for carbonated beverage bottle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08300515A JPH08300515A (en) | 1996-11-19 |
JP2939898B2 true JP2939898B2 (en) | 1999-08-25 |
Family
ID=15198967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7137453A Expired - Lifetime JP2939898B2 (en) | 1995-05-12 | 1995-05-12 | Method for producing cap for carbonated beverage bottle and cap for carbonated beverage bottle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2939898B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200468459Y1 (en) | 2011-11-03 | 2013-08-13 | 소다스파클 인터내셔널 리미티드 | A carbonated water manufacturing device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002179116A (en) * | 2000-12-11 | 2002-06-26 | Mikasa Sangyo Kk | Cap for lemonade bottle |
JP4937839B2 (en) * | 2007-05-31 | 2012-05-23 | 株式会社吉野工業所 | Hinge cap |
-
1995
- 1995-05-12 JP JP7137453A patent/JP2939898B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200468459Y1 (en) | 2011-11-03 | 2013-08-13 | 소다스파클 인터내셔널 리미티드 | A carbonated water manufacturing device |
Also Published As
Publication number | Publication date |
---|---|
JPH08300515A (en) | 1996-11-19 |
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