JP3309590B2 - Spout for liquid container - Google Patents
Spout for liquid containerInfo
- Publication number
- JP3309590B2 JP3309590B2 JP24714394A JP24714394A JP3309590B2 JP 3309590 B2 JP3309590 B2 JP 3309590B2 JP 24714394 A JP24714394 A JP 24714394A JP 24714394 A JP24714394 A JP 24714394A JP 3309590 B2 JP3309590 B2 JP 3309590B2
- Authority
- JP
- Japan
- Prior art keywords
- base
- opening
- spout
- liquid container
- plug
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/42—Details of containers or of foldable or erectable container blanks
- B65D5/72—Contents-dispensing means
- B65D5/74—Spouts
- B65D5/746—Spouts formed separately from the container
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は液体容器の口栓に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug for a liquid container.
【０００２】[0002]
【従来の技術】従来、液体容器用口栓においては合成樹
脂により成形し、筒状とした注出筒の底部開口が、薄肉
部で囲まれて取り外し可能とされた開口予定部により閉
鎖される構造のものがあり、その開口予定部に対してプ
ルリングなどの摘み手段が一体に設けられている。そし
て、開封に際しては摘み手段を持って引き上げることに
より薄肉部の一部が切断され、その切断が薄肉部全周に
亘ることにより前記開口予定部が口栓から外され、開封
される構成となっていた。2. Description of the Related Art Conventionally, in a spout for a liquid container, a bottom opening of a cylindrical spouting cylinder formed of a synthetic resin and closed by a removable opening portion which is surrounded by a thin wall portion and can be removed. There is a structure, and a picking means such as a pull ring is provided integrally with the opening portion. At the time of opening, a part of the thin portion is cut by pulling up with the gripping means, and the cut is removed over the entire circumference of the thin portion, whereby the scheduled opening portion is detached from the plug and opened. I was
【０００３】そして、紙製液体容器の注出孔に取り付け
られる口栓においては、注出筒の基部周りにフランジを
一体に備え付けたものとし、これを注出孔に装着して前
記フランジを注出孔周りに超音波溶着して口栓を液体容
器に固定している。なお、このように口栓のフランジを
注出孔周りに超音波溶着するものでは、溶着する際の振
動がフランジから上記薄肉部に伝わり易く、溶着時に前
記薄肉部にピンホールを生じさせるという不都合がある
ため、例えば実開昭６３−１６９４２９号公報、実開平
３−１７０２８号公報に示されているように、薄肉部の
外側に沿って振動吸収のための凹溝を設けたり、薄肉部
の外側に振動吸収部材を立設する工夫が提案されてい
る。[0003] In a spout attached to a spout hole of a paper liquid container, a flange is integrally provided around a base of the spout cylinder, and the flange is attached to the spout hole to attach the flange. The mouth plug is fixed to the liquid container by ultrasonic welding around the outlet. In the case where the flange of the plug is ultrasonically welded around the spouting hole, the vibration at the time of welding is easily transmitted from the flange to the thin portion, and a pinhole is generated in the thin portion at the time of welding. Therefore, as shown in, for example, Japanese Utility Model Laid-Open No. 63-169429 and Japanese Utility Model Laid-Open No. 3-17028, a concave groove for absorbing vibration is provided along the outside of the thin portion, A device for erecting a vibration absorbing member on the outside has been proposed.
【０００４】[0004]
【発明が解決しようとする課題】ところで、図５に示す
ように凹溝から形成される薄肉部ａで開口予定部ｂを囲
み、その開口予定部ｂの上に摘み手段ｃを一体に設けて
いる口栓においては、開封に際して、摘み手段ｃに対す
る初期の引っ張り力が薄肉部ａの一部に集中し易くする
ために、その摘み手段ｃの基部ｄは薄肉部ａに近接した
位置に設定されている。そして、この口栓を成形する際
には、開口予定部ｂの中央ｅが金型（図示せず）のゲー
トに対応する部分となるようにし、そこから合成樹脂を
押し込むインジェクション成形を行っている場合が多
い。しかしながら、上記開口予定部中央をゲート対応部
としてインジェクション成形する場合、キャビティの開
口予定部成形個所から摘み手段の基部成形個所にかかる
部分で空間が急に拡大するため、この部分での圧力（押
し出されてキャビティ内を流れる樹脂の圧力）が低下す
るという現象があり、図６に示すように、その影響で気
泡ｆが樹脂内に発生してその気泡が薄肉部に溜った状態
で口栓が成形されるという問題があり、薄肉部にピンホ
ールを有した口栓が成形される可能性もある。そして、
気泡が溜った薄肉部では設定樹脂肉厚より小さくなって
いることから、その口栓を容器に対して超音波溶着する
とその振動によって、肉厚の小さくなった部分の薄肉部
が破れてピンホールを生じさせてしまうという不都合が
ある。By the way, as shown in FIG. 5, a thin opening a formed by a concave groove surrounds an expected opening b, and a picking means c is integrally provided on the expected opening b. In such a plug, at the time of opening, the base d of the gripping means c is set at a position close to the thin-walled part a so that the initial pulling force on the gripping means c is easily concentrated on a part of the thin-walled part a. ing. When the plug is formed, injection molding is performed such that the center e of the portion b to be opened corresponds to a gate of a mold (not shown), and synthetic resin is pushed from there. Often. However, when injection molding is performed at the center of the opening scheduled portion as a gate-corresponding portion, the space suddenly expands from a portion where the cavity opening is formed to the base forming portion of the picking means. As a result, as shown in FIG. 6, bubbles f are generated in the resin due to the effect, and the plug is closed in a state where the bubbles accumulate in the thin portion. There is a problem that the plug is formed, and there is a possibility that a plug having a pinhole in a thin portion is formed. And
Since the thickness of the thin portion where the air bubbles are stored is smaller than the set resin thickness, when the plug is ultrasonically welded to the container, the vibration causes the thin portion of the thinned portion to be broken and the pinhole to be broken. Is disadvantageous.
【０００５】そこで本発明は上記事情に鑑み、口栓成形
に際して、開口予定部と摘み手段の基部とが連続してい
る部分での樹脂圧力が低下しないようにすることを課題
とし、薄肉部において上記気泡が溜らないようにして、
超音波溶着時における薄肉部でのピンホールの発生を防
止することを目的とする。In view of the above circumstances, it is an object of the present invention to prevent a resin pressure from decreasing at a portion where a scheduled opening portion and a base of a picking means are continuous at the time of plug formation. So that the air bubbles do not accumulate,
It is an object of the present invention to prevent the occurrence of pinholes in a thin portion during ultrasonic welding.
【０００６】[0006]
【課題を解決するための手段】本発明は上記課題を考慮
してなされたもので、薄肉部により開口予定部が取り外
し可能に区画され、前記開口予定部の薄肉部を形成する
凹溝の上方位置に重ならない近接した位置に摘み手段の
基部が設けられている液体容器用口栓において、前記摘
み手段の基部に対応して前記開口予定部の裏面における
基部対応領域内に、前記摘み手段の基部に向けて凹んだ
凹部を設けたことを特徴とする液体容器用口栓を提供し
て、上記課題を解消するものである。また、本発明は、
前記口栓が有する注出筒の底部開口が前記開口予定部に
より閉鎖され、かつ前記注出筒の底部外周にフランジが
設けられ、このフランジを超音波溶着することにより液
体容器に取り付けられるものとすることが可能である。 SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a thin opening portion is detachably defined by a thin portion to form a thin portion of the opening portion.
At the close position that does not overlap the position above the concave groove ,
In a liquid container spout provided with a base, the back surface of the scheduled opening portion corresponds to the base of the picking means .
The object of the present invention is to solve the above-mentioned problem by providing a stopper for a liquid container, characterized in that a recess recessed toward the base of the picking means is provided in the base corresponding region . Also, the present invention
The bottom opening of the spout cylinder of the spout is located at the opening scheduled portion.
More closed, and a flange is provided on the outer periphery of the bottom of the dispensing cylinder.
The flange is ultrasonically welded to
It can be attached to a body container.
【０００７】[0007]
【作用】本発明では、開口予定部の裏面に、基部に向け
て凹んだ凹部が設けられている。すなわち、キャビティ
における開口予定部成形個所から摘み手段の基部成形個
所にかかる部分において開口予定部成形個所側に凸部が
存在し、前記開口予定部成形個所から前記基部成形個所
にかけてキャビティ内空間が急激に拡大しないようにな
り、この部分で口栓成形時の樹脂の圧力が大きく低下せ
ず、これによって気泡が生じないようになり、超音波溶
着時における振動が伝わってもピンホールが発生しない
ようになる。According to the present invention, a concave portion which is recessed toward the base is provided on the back surface of the portion to be opened. In other words, in the portion of the cavity from the expected opening forming part to the base forming part of the picking means, there is a projection on the expected opening part forming part side, and the space in the cavity suddenly increases from the expected opening forming part to the base forming part. In this part, the pressure of the resin during plug molding does not drop significantly, so that bubbles do not occur and pinholes do not occur even if vibration during ultrasonic welding is transmitted. become.
【０００８】[0008]
【実施例】つぎに本発明を図１から図４に示す実施例に
基づいて詳細に説明する。図中１は合成樹脂により成形
された口栓で、該口栓１は紙製液体容器の注出孔に取り
付けられるように注出筒２の底部外周周りにフランジ３
を備え、そして、注出筒２の底部開口は、略環状の凹溝
から形成された薄肉部４により開口予定部５が取り外し
可能に区画された状態で閉鎖され、その開口予定部５を
取り除くことにより開封できる構成となっており、さら
に図１、図２に示されているように前記開口予定部５の
上に摘み手段６が配置されてその摘み手段６の基部７が
前記薄肉部４を形成する凹溝の上方位置に重ならない近
接した位置に設定されている。以上の点は従来の口栓と
同様である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the embodiments shown in FIGS. In the drawing, reference numeral 1 denotes a plug formed of a synthetic resin, and the plug 1 is provided with a flange 3 around the outer periphery of the bottom of the pouring cylinder 2 so as to be attached to a pouring hole of a paper liquid container.
And the bottom opening of the dispensing cylinder 2 has a substantially annular concave groove.
Opening scheduled portion 5 is closed in a state of being partitioned removably by thin portion 4 formed from, it has a configuration that can open by removing the opening portion to be 5, further
As shown in FIGS. 1 and 2, a picking means 6 is disposed on the opening portion 5 , and a base 7 of the picking means 6 is positioned above the concave groove forming the thin portion 4. become not set to the near <br/> contact position. The above points are the same as those of the conventional plug.
【０００９】そして、本発明は、図１と図２に示すよう
に、摘み手段６の基部７の真下でかつ前記開口予定部５
の裏面の基部対応領域内に、前記基部７に向けて凹んだ
凹部８が設けられている（図３参照）。このように基部
７の下方において凹部８が設けられているため、開口予
定部５における前記基部７が位置している部分の肉厚が
開口予定部５の一般部分の肉厚に比べて急に大きくなら
ないようになっている。即ち、口栓１を成形するキャビ
ティにおいて、開口予定部成形個所から摘み手段の基部
成形個所にかかる部分に凹部成形用の凸部が存在してい
るものである。これにより、口栓成形時に、前記凹部成
形用凸部が在る部分では樹脂の圧力が急激に低下するこ
とがなくなり、気泡が発生しないようになる。前記凹部
８の形状に関して、図３に示すように開口予定部５の径
方向における開放幅寸法Ａを基部７の太さ寸法Ｂの約半
分とし、開口予定部中央側の内側面９を傾斜させること
が良好である。このように凹部８の前記内側面９を傾斜
させれば、口栓成形時において凹部８（即ち、金型の凹
部成形用凸部）を乗り越える樹脂の流れＥがスムーズに
なり、これによってさらに気泡を生じさせないようにす
ることができる。薄肉部４に沿う方向の開放幅寸法Ｃは
基部７の幅寸法Ｄより小さくするのが良好である。な
お、凹部８の形状は任意に設定できるものであり、摘み
手段６から薄肉部４に引っ張り力を伝えることに支障が
生じないものであればその凹部の深さ（高さ）や形状は
限定されない。また、凹部８は図示の例のように基部７
の真下である必要はなく、基部７の真下から開口予定部
５側にズレた位置であってもよい。As shown in FIGS. 1 and 2, the present invention is applicable to a case where the opening 5 is located just below the base 7 of the picking means 6.
A concave portion 8 recessed toward the base 7 is provided in a base corresponding region on the back surface of the substrate (see FIG. 3) . Since the recess 8 is provided below the base 7 in this manner, the thickness of the portion of the planned opening 5 where the base 7 is located is steeper than the thickness of the general portion of the planned opening 5. It does not grow. That is, in the cavity for molding the plug 1, there is a convex portion for forming a concave portion at a portion from a portion where the opening is to be formed to a portion where the base is formed by the picking means. Thereby, at the time of plug formation, the pressure of the resin does not suddenly decrease in the portion where the concave portion forming convex portion is present, so that no bubbles are generated. Regarding the shape of the recess 8, as shown in FIG. 3, the opening width A in the radial direction of the planned opening 5 is set to about half of the thickness B of the base 7, and the inner side surface 9 at the center of the planned opening is inclined. That is good. When the inner side surface 9 of the concave portion 8 is inclined in this manner, the flow E of the resin over the concave portion 8 (that is, the convex portion for forming the concave portion of the mold) becomes smooth when the plug is formed. Is not caused. It is preferable that the opening width C in the direction along the thin portion 4 is smaller than the width D of the base 7. The shape of the recess 8 can be set arbitrarily, and the depth (height) and shape of the recess are limited as long as it does not hinder the transmission of the pulling force from the knob 6 to the thin portion 4. Not done. Further, the concave portion 8 is provided on the base 7 as in the illustrated example.
It is not necessary to be directly below the base 7, and it may be a position shifted from directly below the base 7 toward the opening scheduled portion 5 side.
【００１０】上記口栓１は紙製液体容器の注出孔に取り
付けることができるようにフランジを有したタイプのも
のであるが、本発明はフランジを有する口栓に限定され
るものではなく、例えば図４に示すように、瓶型容器の
口部に取り付けられるように王冠形状として天面に薄肉
部４により分離可能に区画された開口予定部５を形成
し、その開口予定部５に摘み手段６を設けた構成を有す
る口栓１に対しても実施できるものであり、摘み手段６
の基部７に対応して開口予定部５の裏面に、基部７に向
けて凹んだ凹部８を設けるようにしてもよい。The plug 1 is of a type having a flange so that it can be attached to an outlet of a paper liquid container. However, the present invention is not limited to a plug having a flange. For example, as shown in FIG. 4, a scheduled opening 5 is formed on the top surface of the crown so as to be attached to the mouth of the bottle-shaped container and is separated from the top surface by a thin portion 4 so as to be separable. The present invention can also be applied to the plug 1 having the structure provided with the means 6.
A concave portion 8 that is recessed toward the base 7 may be provided on the back surface of the opening 5 corresponding to the base 7.
【００１１】[0011]
【発明の効果】以上説明したように、本発明の液体容器
用口栓は、薄肉部により開口予定部が取り外し可能に区
画され、前記開口予定部の薄肉部を形成する凹溝の上方
位置に重ならない近接した位置に摘み手段の基部が設け
られているものであって、前記摘み手段の基部に対応し
て前記開口予定部の裏面における基部対応領域内に、前
記摘み手段の基部に向けて凹んだ凹部を設けたことを特
徴とするものである。このように、基部に対応した開口
予定部の裏面に凹部を設けるようにしたので、口栓成形
時において、キャビティの開口予定部成形個所から基部
成形個所にかかる部分で樹脂の圧力が大きく低下すると
いうことがなくなり、気泡の発生を防止でき、よってそ
の凹部より外側に位置する薄肉部に気泡が存在しない口
栓となり、超音波溶着による振動によって口栓取付を行
ってもピンホールが発生しないなど、実用性に優れた効
果を奏するものである。As described above, in the plug for a liquid container according to the present invention, the portion to be opened is detachably defined by the thin portion, and the portion above the concave groove forming the thin portion of the portion to be opened.
A base of the picking means is provided at a position close to the position which does not overlap with the position, and a base corresponding region on the back surface of the scheduled opening portion corresponding to the base of the picking means, at the base of the picking means. It is characterized in that a concave portion which is depressed is provided. As described above, since the concave portion is provided on the back surface of the opening portion corresponding to the base portion, the pressure of the resin is greatly reduced at the portion applied from the opening portion forming portion of the cavity to the base portion at the time of plug molding. That is to say, it is possible to prevent the generation of air bubbles, so that there is no air bubble in the thin portion located outside the concave portion, and no pinholes are generated even if the plug is installed by vibration due to ultrasonic welding It has an effect excellent in practicality.
【図１】本発明に係る液体容器用口栓の一実施例を断面
で示す説明図である。FIG. 1 is an explanatory view showing a cross section of an embodiment of a liquid container spout according to the present invention.
【図２】一実施例の要部断面を拡大して示す説明図であ
る。FIG. 2 is an explanatory diagram showing an enlarged cross section of a main part of one embodiment.
【図３】一実施例における要部を口栓裏面側から見た状
態で示す説明図である。FIG. 3 is an explanatory diagram showing a main part in one embodiment when viewed from the back side of the plug.
【図４】他の実施例を示す説明図である。FIG. 4 is an explanatory diagram showing another embodiment.
【図５】従来例を断面で示す説明図である。FIG. 5 is an explanatory view showing a conventional example in cross section.
【図６】従来例における摘み手段の基部周りを断面で示
す説明図である。FIG. 6 is an explanatory diagram showing a cross section around a base of a knob in a conventional example.
１…口栓 ４…薄肉部 ５…開口予定部 ６…摘み手段 ７…基部 ８…凹部 ９…内側面 DESCRIPTION OF SYMBOLS 1 ... Mouth plug 4 ... Thin part 5 ... Scheduled opening part 6 ... Pinch means 7 ... Base part 8 ... Recess part 9 ... Inner side surface
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B65D 47/36 B65D 5/74 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) B65D 47/36 B65D 5/74
Claims (2)
区画され、前記開口予定部の薄肉部を形成する凹溝の上
方位置に重ならない近接した位置に摘み手段の基部が設
けられている液体容器用口栓において、 前記摘み手段の基部に対応して前記開口予定部の裏面に
おける基部対応領域内に、前記摘み手段の基部に向けて
凹んだ凹部を設けたことを特徴とする液体容器用口栓。1. An opening portion is detachably defined by a thin portion, and a groove is formed on the groove forming the thin portion of the opening portion.
A stopper for a liquid container in which the base of the picking means is provided at a position not adjacent to the one side position , wherein the base of the picking means corresponds to the base of the picking means ,
A mouthpiece for a liquid container, wherein a recessed portion is provided in the base corresponding region toward the base of the knob means.
開口予定部により閉鎖され、かつ前記注出筒の底部外周
にフランジが設けられ、このフランジを超音波溶着する
ことにより液体容器に取り付けられることを特徴とす
る、請求項１に記載の液体容器用口栓。2. A bottom opening of the spout cylinder of the spout is closed by the scheduled opening part, and a flange is provided on an outer periphery of a bottom of the spout cylinder, and the flange is ultrasonically welded to the liquid container. The spout for a liquid container according to claim 1, wherein the spout is attached to the spout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24714394A JP3309590B2 (en) | 1994-09-14 | 1994-09-14 | Spout for liquid container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24714394A JP3309590B2 (en) | 1994-09-14 | 1994-09-14 | Spout for liquid container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0885563A JPH0885563A (en) | 1996-04-02 |
| JP3309590B2 true JP3309590B2 (en) | 2002-07-29 |
Family
ID=17159077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24714394A Expired - Fee Related JP3309590B2 (en) | 1994-09-14 | 1994-09-14 | Spout for liquid container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3309590B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5069426B2 (en) * | 2006-06-12 | 2012-11-07 | 日本クラウンコルク株式会社 | Pouring tool |
| WO2015068298A1 (en) * | 2013-11-11 | 2015-05-14 | 三笠産業株式会社 | Synthetic resin cap and mold and production method therefor |
| PL2955122T3 (en) | 2014-06-10 | 2018-07-31 | Tetra Laval Holdings & Finance | Opening device and apparatus for moulding an opening device on a sheet packaging material |
| JP7360957B2 (en) * | 2019-01-18 | 2023-10-13 | ロート製薬株式会社 | Sample extraction container and sample testing kit |
| MX2024003710A (en) * | 2021-09-30 | 2024-04-10 | Tetra Laval Holdings & Finance | Opening device for a package, mold for molding an opening device for a package and package having an opening device. |
-
1994
- 1994-09-14 JP JP24714394A patent/JP3309590B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0885563A (en) | 1996-04-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |