JPH0655382B2 - Method of manufacturing spout - Google Patents
Method of manufacturing spoutInfo
- Publication number
- JPH0655382B2 JPH0655382B2 JP19451089A JP19451089A JPH0655382B2 JP H0655382 B2 JPH0655382 B2 JP H0655382B2 JP 19451089 A JP19451089 A JP 19451089A JP 19451089 A JP19451089 A JP 19451089A JP H0655382 B2 JPH0655382 B2 JP H0655382B2
- Authority
- JP
- Japan
- Prior art keywords
- opening
- wall portion
- thin
- spout
- producing
- 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
- Closures For Containers (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は容器の注出栓の製造方法に関し、特には開口容
易な注出栓の製造方法に関する。TECHNICAL FIELD The present invention relates to a method for manufacturing a pouring stopper of a container, and more particularly to a method for manufacturing a pouring stopper that can be easily opened.
〈従来技術〉 従来より、紙を主体とした積層構成の液体紙容器は、牛
乳、ジュース類、清酒、醤油、食酢、食用油等の食品容
器として広く使われている。比較的長時間保存する清
酒、ジュース等の飲料の容器は完全な密封性が要求され
るため、容器本体にはアルミ箔等のガスバリヤー層を有
する素材から形成される。また、このような容器に易開
封性を備えた内容物注出用の注出栓の取り付けられたも
のも数多く使われている。<Prior Art> Liquid paper containers having a laminated structure mainly composed of paper have been widely used as food containers for milk, juices, sake, soy sauce, vinegar, edible oil and the like. Since containers for beverages such as sake and juice that are stored for a relatively long period of time are required to have perfect hermeticity, the container body is formed of a material having a gas barrier layer such as aluminum foil. In addition, many of such containers, which are provided with a pouring plug for pouring the contents, which is easy to open, are also used.
注出栓付きの紙容器に於いては、前記のように容易本体
自身はガスバリヤー性有するものであっても、注出栓
は、例えばポリエチレン等の合成樹脂のインジェクショ
ン成形品であるため、この注出栓からガス透過し内容物
が酸化されて、品質を低下させてという問題点があっ
た。In a paper container with a spout, even if the main body itself has a gas barrier property as described above, the spout is an injection molded product of a synthetic resin such as polyethylene. There is a problem that the gas permeates from the pouring plug and the contents are oxidized to deteriorate the quality.
そこで、このような問題点を解消するために、例えば、
実開昭５９−１２１３５７号公報に記載されているよう
な開口部の裏面にガスバリヤー性フィルムを貼着した注
出栓が使われている。Therefore, in order to eliminate such problems, for example,
An outlet plug having a gas barrier film adhered to the back surface of the opening as described in Japanese Utility Model Publication No. 59-121357 is used.
しかしながら、上記のような注出栓に於いて、摘み片に
連設されたプルリングを引っ張って、薄肉部を引き裂い
て開口する際、フィルムを貼着したことによりその引き
裂き強度が増し、強く引っ張らないと開口出来なかった
り、また、強く引くことにより摘み片の端部が切断して
注出不能になってしまうことがあった。However, in the above-mentioned pouring plug, when pulling the pull ring connected to the knob to tear and open the thin portion, the tear strength is increased by sticking the film, and it is not pulled strongly. There was a case that the opening could not be opened, or the end of the picking piece was cut by pulling strongly and it became impossible to pour.
そこで、例えば、実開昭６１−１７８３３０号公報に記
載のように、開口用の薄肉部を形成するＶ字状の溝の一
部を貫通孔とすることで開封性を高めようと試みがなさ
れたが、未だ開封しにくいという問題点があった。更
に、Ｖ字状の溝に該当する薄肉部の肉厚を薄くすること
を試みたが、インジェクション成形により形成するた
め、樹脂の回りを考慮するとその肉厚にも限界があっ
た。Therefore, for example, as described in Japanese Utility Model Laid-Open No. 61-178330, an attempt has been made to improve the unsealing property by using a part of a V-shaped groove forming a thin portion for opening as a through hole. However, there was a problem that it was still difficult to open. Furthermore, an attempt was made to reduce the thickness of the thin portion corresponding to the V-shaped groove, but since it was formed by injection molding, there was a limit to the thickness considering the resin surroundings.
〈考案が解決しようとする課題〉 本発明はこのような課題を解決するためになされたもの
であって、摘み片を引っ張って、薄肉部を引き裂いて開
口する際、強い力が引っ張らないくても容易に開口でき
て、摘み片の端部が切断して注出不能になってしまうこ
とがないような注出栓の製造方法を提供するものであ
る。<Problems to be Solved by the Invention> The present invention has been made in order to solve such problems, and when pulling the knob to tear and open the thin portion, a strong force is not pulled. Also, the present invention provides a method for producing a pouring plug that can be easily opened without causing the end portion of the picking piece to be cut and become incapable of pouring.
〈課題を解決するための手段〉 本発明は上記した課題を解決するために、容器の開口部
に取り付けられるフランジ部を有し、該フランジ部に円
筒状の注出部が形成され、この注出部を封鎖するように
天壁部が連設され、この天壁部に開口用薄肉部が形成さ
れ、前記天壁部の上面には摘み片が連設された注出栓本
体の、前記天壁部の裏面にガスバリヤー性フィルムが貼
着されてなる注出栓の製造方法に於いて、前記開口用薄
肉部を、注出栓本体をインジェクション成形により成形
する時、樹脂が回る程度の肉厚に形成し、ガスバリヤー
性フィルムを貼着後、前記開口用薄肉部を先端が鋭利な
金型で押圧して押し潰して肉厚を減少させることを特徴
とするものである。<Means for Solving the Problems> In order to solve the above-mentioned problems, the present invention has a flange portion attached to an opening of a container, and a cylindrical ejection portion is formed in the flange portion. A ceiling wall portion is continuously provided so as to block the outlet portion, a thin wall portion for opening is formed in this ceiling wall portion, and a tapping piece main body in which a knob is continuously provided on the upper surface of the ceiling wall portion, In the method for producing a pouring stopper in which a gas barrier film is adhered to the back surface of the ceiling wall portion, the thin portion for opening is molded by injection molding of the pouring stopper main body so that the resin is rotated. It is characterized in that it is formed to have a large thickness, and after the gas barrier film is attached, the thin portion for opening is pressed and crushed by a die having a sharp tip to reduce the thickness.
更に、前記金型をホットプレス金型としたものであり、
また、前記金型を超音波ホーンヘッドとしたものであ
る。Further, the mold is a hot press mold,
The mold is an ultrasonic horn head.
〈作用〉 本発明によれば、注出栓本体の開口用薄肉部をガスバリ
ヤー性フィルムを貼着後、先端が鋭利な金型で押圧して
押し潰すことにより肉厚を減少させるので、通常のイン
ジェクション成形で行っても樹脂が回らない程度の肉厚
まで薄くすることができる。また、前記金型をホットプ
レス金型や超音波ホーンヘッドとすることにより、金型
による押圧とともに、金型接触部分の樹脂を溶融するの
で、更に容易に肉厚を薄くすることがてきる。また、そ
の肉厚を０とすることも可能である。<Operation> According to the present invention, after the gas barrier film is attached to the thin portion for opening of the pouring plug body, the wall thickness is reduced by pressing and crushing it with a die having a sharp tip. Even if the injection molding is performed, the resin can be thinned to the extent that the resin does not rotate. Further, by using a hot press mold or an ultrasonic horn head as the mold, the resin in the mold contact portion is melted together with the pressing by the mold, so that the wall thickness can be reduced more easily. It is also possible to make the wall thickness zero.
〈実施例〉 図面に従って本発明を詳細に説明する。先ず、第１図は
ポリエチレン（以下ＰＥという）樹脂を用いてインジェ
クション成形により形成した注出栓本体(1)を示し、容
器の開口部に取り付けられる円形のフランジ部(11)を有
し、該フランジ部(11)に外側にキャップと嵌合するため
に形成された螺状(12a)を備えた円筒状の注出部(12)が
形成され、この注出部(12)を封鎖するように天壁部(13)
が前記フランジ部(11)と下面が同一平面に連設され、こ
の天壁部(13)に上面より円形の断面Ｖ字状の溝により開
口用薄肉部(13a)が形成され、前記天壁部(13)の上面に
は引張りリング(13b′）を上端部に有する摘み片(13b)
が連設されている。<Example> The present invention will be described in detail with reference to the drawings. First, FIG. 1 shows a pouring plug body (1) formed by injection molding using polyethylene (hereinafter referred to as PE) resin, which has a circular flange portion (11) attached to an opening of a container, The flange part (11) is formed with a cylindrical spout (12) having a screw shape (12a) formed to fit the cap on the outside, and the spout (12) is closed. To the wall (13)
The flange portion (11) and the lower surface are continuously provided on the same plane, and the thin wall portion (13a) for opening is formed in the ceiling wall portion (13) from the upper surface by a groove having a circular V-shaped cross section. A knob (13b) having a pulling ring (13b ') on the upper surface of the portion (13)
Are lined up.
次に、第２図のように、前記注出栓本体(1)の天壁部(1
3)の下面に、フランジ部(11)と略同径のＰＥ／アルミ箔
（以下Ａ１という）／ＰＥの積層構成のガスバリヤー性
フィルム(2)がヒートシールにより貼着される。Next, as shown in FIG. 2, the top wall portion (1
A gas barrier film (2) having a laminated structure of PE / aluminum foil (hereinafter referred to as A1) / PE and having substantially the same diameter as the flange portion (11) is attached to the lower surface of 3) by heat sealing.
このようにして形成した注出栓(a)を、第３図のよう
に、受け台(3)の上に載置して、上下動可能に形成され
た前記開口用薄肉部(13a)と同径の円筒状の先端が鋭利
なプレス金型(3)で押圧すると、第５図のように、開口
用薄肉部(13a)の肉圧をインジェクション成形時より更
に薄くすることができる。The pouring plug (a) thus formed is placed on the pedestal (3) as shown in FIG. 3, and the thin portion for opening (13a) formed so as to be movable up and down. When the cylindrical tip having the same diameter is pressed by the press die (3) having a sharp tip, as shown in FIG. 5, the wall thickness of the thin portion for opening (13a) can be made thinner than that during injection molding.
次に、開口時の引き裂き強度を比較した結果を下記（表
−１）に示す。Next, the results of comparing the tear strengths at the time of opening are shown in (Table 1) below.
尚、このテストで使った成形品の開口用薄肉部(13a)の
肉厚は.03mmであり、ガスバリヤー性フィルム(2)はＰＥ
40μ／Ａ120μ／ＰＥ40μの積層構成である。The thin part (13a) for opening of the molded product used in this test had a thickness of 0.03 mm, and the gas barrier film (2) was PE.
It has a laminated structure of 40 μ / A 120 μ / PE 40 μ.
試料数；それぞれＮ＝１０ 成形品（第１図参照） 成形品にガスバリヤー性フィルムを貼着したもの（第
２図参照） 本発明の方法により開口用薄肉部を押圧したもの（第
３図、第４図参照） この表からも本発明による注出栓が開口作業が容易にで
きることが理解できよう。Number of samples: N = 10 each (see FIG. 1) Molded product with gas barrier film attached (see FIG. 2) Pressed thin portion for opening by the method of the present invention (FIG. 3) , See FIG. 4) From this table, it can be understood that the spout according to the present invention can be easily opened.
ここで前記実施例に於いて、プレス金型(3)を用いた
が、ホットプレス金型、超音波ホーンヘッドを先端部に
設けた金型を用いてもよい。このような金型を用いるこ
とにより、金型による押圧とともに、金型接触部分の樹
脂を溶融するので、更に容易に肉厚を薄くすることがて
きる。Although the press die (3) is used in the above embodiment, a hot press die or a die having an ultrasonic horn head at the tip may be used. By using such a die, the resin in the die contact portion is melted together with the pressing by the die, so that the wall thickness can be further easily reduced.
また、開口用薄肉部(13a)を天壁部(13)に下面より円形
の断面Ｖ字状の溝よりなる開口用薄肉部(13a)を形成し
てもよく、（第６図(a)参照）このようにすると金型プ
レスする時、第６図(b)のように開口用薄肉部(13a)を完
全に打ち抜くこともできて、その肉厚を０とすることが
できる。Further, the thin wall portion (13a) for opening may be formed on the ceiling wall portion (13) from the lower surface by forming a thin wall portion (13a) for opening formed by a groove having a circular V-shaped cross section (see FIG. 6 (a)). By doing so, when the die is pressed, the thin portion for opening (13a) can be completely punched out as shown in FIG. 6 (b), and the thickness can be made zero.
更に、開口用薄肉部(13a)を同じ肉厚に連続的に形成し
てもよいが、第４図のように部分的に貫通孔(13a′）を
設けた構成としてもよい。Further, the thin portion for opening (13a) may be continuously formed to have the same thickness, but it may be configured such that the through hole (13a ') is partially provided as shown in FIG.
また金型の先端部の形状としては第７図(a)のように先
端が同一平面上くるように形成してもよいが、例えば、
第７図(b)のような鋸刃状、第７図(c)のような断続的に
鋸刃状の部分を形成した形状とすることもできる、開口
用薄肉部(13a)全体を薄くすることも、部分的に、例え
ば断続的に薄くする、摘み片基端部の近傍部分を薄くす
る、等のことも可能である。The shape of the tip of the mold may be formed so that the tip is on the same plane as shown in FIG. 7 (a).
The whole thin portion for opening (13a) can be thinned to have a saw-tooth shape as shown in FIG. 7 (b) or an intermittent saw-tooth shape as shown in FIG. 7 (c). Alternatively, it is also possible to partially thin, for example, intermittently, thin the portion near the proximal end of the knob.
〈発明の効果〉 本発明は以上のような構成よりなるので、摘み片を引っ
張って、開口用薄肉部を引き裂いて開口する際に、強い
力で引っ張らないくても容易に開口できるとともに、そ
の端部が切断して注出不能になってしまうこともない注
出栓の製造することができる。<Effects of the Invention> Since the present invention has the above-described structure, when the knob is pulled to tear and open the thin portion for opening, the opening can be easily performed without pulling with a strong force. It is possible to manufacture a spout stopper that does not become impossible to spout by cutting the end portion.
第１図(a)はインジェクション成形により形成した注出
栓本体の説明断面図、第１図(b)は第１図(a)の一部分を
拡大して示した説明断面図、第２図はガスバリヤー性フ
ィールムを貼着した状態の説明断面図、第３図はプレス
金型でプレスする状態を示す説明断面図、第４図はプレ
ス後の状態の説明断面図、第５図は開口用薄肉部の他の
形態の底面図、第６図(a)は第５図のような形態の開口
用薄肉部を打ち抜く状態示す説明断面図、第６図(b)は
その打ち抜き後の状態示す説明断面図、第７図(a)(b)及
び(c)はプレス金型の先端部の形状を例示した斜視図で
ある。 (A)……注出栓 (1)……注出栓本体、(11)……フランジ部 (12)……注出部、(12a)……螺状 (13)……天壁部、(13a)……開口用薄肉部 (13b)……摘み片、(13b′）……引張りリング (2)……ガスバリヤー性フィルム (3)……プレス金型 (4)……受け台1 (a) is an explanatory sectional view of a spout body formed by injection molding, FIG. 1 (b) is an enlarged sectional view showing a part of FIG. 1 (a), and FIG. 2 is Explanatory sectional view showing a state in which a gas barrier film is attached, FIG. 3 is an explanatory sectional view showing a state of pressing with a press die, FIG. 4 is an explanatory sectional view of a state after pressing, and FIG. 5 is for opening. A bottom view of another form of the thin portion, FIG. 6 (a) is an explanatory cross-sectional view showing a state of punching out the thin portion for opening of the form as shown in FIG. 5, and FIG. 6 (b) shows a state after the punching. Explanatory sectional views and FIGS. 7 (a), (b) and (c) are perspective views illustrating the shape of the tip of the press die. (A) …… Pour-out plug (1) …… Pour-out plug body, (11) …… Flange part (12) …… Pour-out part, (12a) …… Screw shape (13) …… Top wall part, (13a) …… Thin-walled part for opening (13b) …… Holding piece, (13b ′) …… Tensile ring (2) …… Gas barrier film (3) …… Press die (4) …… Cradle
Claims (3)
を有し、該フランジ部に円筒状の注出部が形成され、こ
の注出部を封鎖するように天壁部が連設され、この天壁
部に開口用薄肉部が形成され、前記天壁部の上面には摘
み片が連設された注出栓本体の、前記天壁部の裏面にガ
スバリヤー性フィルムが貼着されてなる注出栓の製造方
法に於いて、前記開口用薄肉部を、注出栓本体をインジ
ェクション成形により成形する時、樹脂が回る程度の肉
厚に形成し、ガスバリヤー性フィルムを貼着後、前記開
口用薄肉部を先端が鋭利な金型で押圧して押し潰して肉
厚を減少させることを特徴とする注出栓の製造方法。Claims: 1. A container having a flange part attached to an opening of a container, a cylindrical spout part is formed on the flange part, and a ceiling wall part is continuously provided so as to close the spout part. A thin wall portion for opening is formed on the top wall portion, and a gas barrier film is attached to the back surface of the top wall portion of the spout main body in which a knob is continuously provided on the upper surface of the top wall portion. In the method for producing a pouring plug, the thin portion for opening is formed to have a thickness that allows resin to rotate when the pouring plug main body is formed by injection molding, and after attaching a gas barrier film, A method for producing a pouring plug, characterized in that the thin wall portion for opening is pressed and crushed by a die having a sharp tip to reduce the wall thickness.
(1)の記載の注出栓の製造方法。2. The mold is a hot press mold.
The method for producing an outlet plug according to (1).
項(1)記載の注出栓の製造方法。3. The method for producing a pouring plug according to claim 1, wherein the mold is an ultrasonic horn head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19451089A JPH0655382B2 (en) | 1989-07-27 | 1989-07-27 | Method of manufacturing spout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19451089A JPH0655382B2 (en) | 1989-07-27 | 1989-07-27 | Method of manufacturing spout |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0358813A JPH0358813A (en) | 1991-03-14 |
| JPH0655382B2 true JPH0655382B2 (en) | 1994-07-27 |
Family
ID=16325730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19451089A Expired - Lifetime JPH0655382B2 (en) | 1989-07-27 | 1989-07-27 | Method of manufacturing spout |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0655382B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4781805B2 (en) * | 2005-12-16 | 2011-09-28 | 東都成型株式会社 | Inner plug manufacturing method |
-
1989
- 1989-07-27 JP JP19451089A patent/JPH0655382B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0358813A (en) | 1991-03-14 |
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