JP4073004B2

JP4073004B2 - Outlet stopper and liquid packaging container

Info

Publication number: JP4073004B2
Application number: JP2002230851A
Authority: JP
Inventors: 正道金子
Original assignee: 日本テトラパック株式会社
Priority date: 2002-08-08
Filing date: 2002-08-08
Publication date: 2008-04-09
Anticipated expiration: 2022-08-08
Also published as: JP2004067195A

Description

【０００１】
【発明の属する技術分野】
本発明は、注出口栓及び液体用包装容器に関する。
【０００２】
【従来の技術】
破断可能な封止フィルムで封止された液体用紙容器の注出孔に設けられるスパウトと、スパウトを覆うキャップと、スパウトに内蔵され、キャップに回転開封運動に連動して逆に注出孔へ下方へ運動する開封刃とからなる注出口栓及びその液体用包装容器は、例えば、実開昭60- 62027、実開昭63- 86021、実開昭63- 86022、実開昭63-169425、実開昭63-169427、実開昭63-169428、実開昭63-190034、実開昭63-194153、実開昭63-1978620、実開昭63-197828、実開昭63-202649、実開昭63-202650、実開平01- 2728、実開平01- 2729、実開平01- 9128、実開平01- 11930、実開平01- 23475、実開平01- 66324、実開平01- 35827、実開平01- 35828、実開平01- 47652、実開平01-122429、実開平01-126925、実開平02- 1627、実開平03- 8130、実開平03-114722、特開平06- 92353、特開平08-183555、特開平09- 12025、特開平10-139057、特開平10-194276、特開平10-245064、特開平10-273167、特開平11-115962、特開平11-130121、特開平11-130122、特開平11-139449、特開平11-227817、特開平11-222231、特開2000-264359公報などに記載されたものが知られている。
【０００３】
【発明が解決しようとする課題】
破断可能な封止フィルムで封止された液体用紙容器の注出孔に設けられるスパウトと、スパウトを覆うキャップと、スパウトに内蔵され、キャップに回転開封運動に連動して逆に注出孔へ下方へ運動する開封刃とからなる注出口栓及びその液体用包装容器は、開封直後に、連動する開封刃から容易に離脱して取り外すことができなくてはならない。
破断可能な封止フィルムで封止された液体用紙容器の注出孔の位置に正確に、注出口栓が配設しなくは、機能に沿った開封ができない。正確な配設には、製造工程における、液体用紙容器の注出孔の正確な位置決めと注出口栓の正確な接合が必要になる。
小児などの非力な消費者であっても、注出口栓を容易に簡単に開封できることが切望されている。
本発明は、上記の必要性、切望に応えるものであり、開封直後に開封刃から容易に取り外すことができ、液体用紙容器の注出孔の位置に正確に注出口栓が配設しなくても機能に沿って開封ができ、包装材料の製造、容器の包装充填、容器への注出口栓の接合工程において、安定した高い稼働率で、実施することができる注出口栓及び液体用包装容器を提供することを目的とする。
【０００４】
【課題を解決するための手段】
この課題を解決する本発明の注出口栓及び液体用包装容器は、キャップに、開封刃に回転力を伝動する第１係合フィンを、キャップの天板下面から垂直に設け、開封刃に、円筒部と円筒部の下方中心に設けらる突起刃とテーパー部とを備え、開封刃の円筒部の内周面に上下垂直に、第２係合フィンを設け、テーパー部は急斜面及び緩斜面を有し、注出孔の直径がスパウト注出筒の内径より小さいように構成したものである。
これにより、開封直後に開封刃から容易に取り外すことができ、液体用紙容器の注出孔の位置に正確に注出口栓が配設しなくても機能に沿って開封ができ、包装材料の製造、容器の包装充填、容器への注出口栓の接合工程において、安定した高い稼働率で、製造することができる注出口栓及び液体用包装容器が得られる。
【０００５】
【発明の実施の形態】
本発明の請求項１に記載の発明は、破断可能な封止フィルムで封止された液体用紙容器の注出孔に設けられ、注出筒と基部とからなるスパウトと、該スパウトを覆うキャップと、該スパウトに内蔵され、該キャップの螺旋状上下運動に連動して螺旋状に下上運動する開封刃と、からなる注出口栓であって、
前記キャップには、前記開封刃に回転力を伝動する複数の第１係合フィンが、前記キャップの天板下面から実質的に垂直に設けられ、
前記キャップの内周面と前記スパウトの注出筒の外周面とに、該キャップをその開閉時に螺旋状に上下させる螺合部がそれぞれ設けられ、
前記開封刃には、前記スパウトの注出筒の内周面に設けられた螺合部と螺合して、該キャップの螺旋状上下運動に連動して螺旋状に下上運動する螺合部を外周面に有する円筒部と、該円筒部の下方中心に設けらる突起刃と、該円筒部下縁端から該突起刃を支持しかつ液体用貫通孔を有するテーパー部とを備え、
前記開封刃の円筒部の内周面に上下垂直に、前記キャップの係合フィンと、前記キャップの螺旋状上運動時に係合して回転力を該キャップから該開封刃に伝動し、該キャップの螺旋状下運動時に確実に係合しない第２係合フィンが設けられ、
前記テーパー部は、連続的若しくは不連続的に、前記キャップ円筒部下縁端から該突起刃にわたり、急斜面及び緩斜面を有し、
注出孔の直径がスパウト注出筒の内径より小さく、
下方への螺旋状回転運動によって、突起刃が先ず封止フィルムを破断し、テーパー部の緩斜面がフィルムの破断を拡大し、テーパー部の急斜面が注出孔の端部を内側に押し曲げる
ことを特徴とする。
【０００６】
請求項２に記載の発明は、破断可能な封止フィルムで封止された注出孔を頂部に有し、該注出孔に設けられ注出筒と基部とからなるスパウトと該スパウトを覆うキャップと該スパウトに内蔵され該キャップの螺旋状上下運動に連動して螺旋状に下上運動する開封刃とからなる注出口栓を有する液体用包装容器であって、
前記キャップには、前記開封刃に回転力を伝動する複数の第１係合フィンが、前記キャップの天板下面から実質的に垂直に設けられ、
前記キャップの内周面と前記スパウトの注出筒の外周面とに、該キャップをその開閉時に螺旋状に上下させる螺合部がそれぞれ設けられ、
前記開封刃には、前記スパウトの注出筒の内周面に設けられた螺合部と螺合して、該キャップの螺旋状上下運動に連動して螺旋状に下上運動する螺合部を外周面に有する円筒部と、該円筒部の下方中心に設けらる突起刃と、該円筒部下縁端から該突起刃を支持しかつ液体用貫通孔を有するテーパー部とを備え、
前記開封刃の円筒部の内周面に上下垂直に、前記キャップの係合フィンと、前記キャップの螺旋状上運動時に係合して回転力を該キャップから該開封刃に伝動し、該キャップの螺旋状下運動時に確実に係合しない第２係合フィンが設けられ、
前記テーパー部は、連続的若しくは不連続的に、前記キャップ円筒部下縁端から該突起刃にわたり、急斜面及び緩斜面を有し、
前記注出孔の直径が前記スパウト注出筒の内径より小さく
下方への螺旋状回転運動によって、前記突起刃が先ず前記封止フィルムを破断し、前記テーパー部の緩斜面が該フィルムの破断を拡大し、前記テーパー部の急斜面が前記注出孔の端部を内側に押し曲げる
ことを特徴とする。
【０００７】
上記構成を有するこの発明は、以下の様に作用機能する。
この発明における液体用包装容器は、破断可能な封止フィルムで封止された注出孔を頂部に有する。その容器は、紙などの積層包装材料より形成され、その包装材料が容器頂部で穿孔されて注出孔が形成されている。その注出孔がバリア性プラスチックフィルムなどで封止されている。
そのスパウトの基部は、容器頂部であって注出孔の近傍に接合され、注出栓を容器に固着し支持する。スパウトの注出筒は、容器内容物の液体を注ぎ出す通路を形成する。
その開封刃は、スパウトに内蔵され、キャップの開封時の螺旋状上運動に連動して螺旋状に下方運動する。その結果、その開封刃は、注出孔の破断可能な封止フィルムを破断する。
【０００８】
キャップは、スパウトを覆い、注出孔を保護するとともに、開封時にキャップの回転運動が開封刃のフィルム破断力を生む。そのキャップには、複数の第１係合フィンが設けられている。その第１係合フィンがキャップの天板下面から実質的に垂直に設けられ、開封刃に回転力を伝動する。
キャップの内周面と前記スパウトの注出筒の外周面とに、螺旋状に上下させる螺合部、すなわち、ネジ、若しくは、ネジ状突条／溝が、それぞれ設けられている。キャップを回転させることにより、螺合部に沿って螺旋状に上下に滑動する。キャップを開閉することができる。
スパウトには、その注出筒の内周面に設けられた螺合部を有する。開封刃は、その螺合部と、円筒部の外周面の螺合部とで螺合する。その螺合により、キャップの螺旋状上下運動に連動して螺旋状に下上運動する、すなわち、キャップの上昇により、開封刃が下降する。円筒部の下方中心に設けらる突起刃が、先ず、注出孔の封止フィルムの概中央付近の１点を容易に破断する。
テーパー部は、円筒部下縁端から突起刃を機械的に支持するとともに、液体用貫通孔を有するので、開封後に注出時に容器内容物の液体が通過させる。そのテーパー部は、連続的若しくは不連続的に、キャップ円筒部下縁端から突起刃にわたり、急斜面及び緩斜面を有する。このテーパー部は、突起刃の最初の破断後に、緩斜面によりフィルムの破断を拡大し、急斜面により注出孔の端部を内側に押し曲げて、更に注出面積を拡大する。しかも、その押し曲げにより、液体の流出を障害する破断フィルム片も押し退けることができる。
【０００９】
開封刃の円筒部の内周面に上下垂直に設けられた第２係合フィンは、キャップの係合フィンとキャップの螺旋状上運動時に係合して回転力をキャップから開封刃に伝動するが、キャップの螺旋状下運動時に確実に係合しない。その結果、キャップが開封時に上昇回転すると同時に、確実に、開封刃が下方に回転し、フィルムを破断する。開封が終了し、キャップがスパウトから離脱すると、第１係合フィンと第２係合フィンとがいずれも上下垂直に設けられているので、万が一にも、開封刃がスパウト若しくは容器に係合していても、双方が、容易に、上下に離脱する。
注出孔の直径がスパウト注出筒の内径より小さい。その為に、開封刃の中央の突起刃が注出孔のフィルムに位置する限り、容易に、開封機能を発揮することができるので、注出栓を正確に位置決めをする必要が無い。
以下、本発明の実施の形態について、図１から図５を用いて説明する。
【００１０】
（実施の形態１）
図１は、この発明の一実施の形態である注出栓を示す分解側面図である。図１において注出栓は、破断可能な封止フィルム２０で封止された液体用紙容器の注出孔２１に設けられ、注出筒１ａと基部１ｂとからなるスパウト１と、スパウト１を覆うキャップ２と、スパウト１に内蔵され、キャップ２の螺旋状上下運動に連動して螺旋状に下上運動する開封刃３と、からなる。
図３は、この実施形態の注出栓の部分省略分解斜視図である。
キャップ２には、開封刃３に回転力を伝動する複数（４本）の第１係合フィン２ａが、キャップ２の天板下面から実質的に垂直に設けられている。
キャップ２の内周面とスパウト１の注出筒１ａの外周面とに、キャップをその開閉時に螺旋状に上下させる螺合部がそれぞれ設けられている。
開封刃３には、スパウト１の注出筒１ａの内周面に設けられた螺合部と螺合して、キャップ２の螺旋状上下運動に連動して螺旋状に下上運動する螺合部を外周面に有する円筒部３ａと、円筒部の下方中心に設けらる突起刃３ｂ（図３に図示せず）と、円筒部３ａ下縁端から突起刃３ｂを支持しかつ液体用貫通孔を有するテーパー部３ｃ（図３に図示せず）とを備える。
【００１１】
開封刃３の円筒部の内周面に上下垂直に、キャップの係合フィン２ａと、キャップ２の螺旋状上運動時に係合して回転力をキャップ２から開封刃３に伝動し、キャップの螺旋状下運動時に確実に係合しない第２係合フィン３dが設けられている。開封刃の概略正面図である図５に示す様に、この形態では、４本のフィン３dが形成されている。
図２は、この実施形態の注出栓の分解断面図である。
そのテーパー部l３cは、この形態ででは不連続的に、キャップ円筒部３ａ下縁端から突起刃３ｂにわたり、急斜面３ｃ１及び緩斜面３ｃ２を有する。
【００１２】
この形態の注出栓の作用機能を説明する。
図４は、注出栓の開封作用を説明する概略断面図である。図５は、開封刃の概略正面図である。
開封刃３は、スパウト１に内蔵され、キャップ２の開封時の螺旋状上方運動に連動して螺旋状に下方運動する。その結果、その開封刃３は、注出孔の封止フィルム２０を破断する。
すなわち、キャップ２の上昇により、開封刃３が下降する。円筒部３ａの下方中心に設けらる突起刃３bが、先ず、注出孔の封止フィルム２０の概中央付近の１点を容易に破断する。
テーパー部３ｃは、突起刃３ｂを機械的に支持するとともに、液体用貫通孔３ｅを有する。液体用貫通孔３ｅから、開封後に注出時に容器内容物の液体が通過する。そのテーパー部３ｃは、不連続的に、急斜面及び緩斜面を有する。このテーパー部３ｃは、突起刃３ｂの最初の破断後に、緩斜面によりフィルムの破断を拡大し、急斜面により注出孔の端部を内側に押し曲げて、更に注出面積を拡大し、その押し曲げにより、液体の流出を障害する破断フィルム片も押し退ける。
【００１３】
開封刃３の円筒部３ａの内周面に上下垂直に設けられた第２係合フィン３ｄは、キャップの係合フィン２ａとキャップの螺旋状上運動時に係合して回転力をキャップから開封刃に伝動する。しかし、キャップの螺旋状下運動時に確実に係合しない。キャップ２が開封時に上昇回転すると同時に、確実に、開封刃３が下方に回転し、フィルムを破断する。開封が終了し、キャップ２がスパウト１から離脱すると、第１係合フィン２ａと第２係合フィン３ｄとがいずれも上下垂直に設けられているので、開封刃３がスパウト１若しくは容器に係合していても、双方が、容易に、上下に離脱する。
注出孔２１の直径がスパウト１注出筒の内径より小さい。その為に、開封刃の中央の突起刃が注出孔のフィルムに位置する限り、容易に、開封機能を発揮することができる。この形態では、注出栓を正確に位置決めをする必要が無い。
【００１４】
【発明の効果】
以上のように本発明によれば、以下の有利な効果が得られる。
液体用紙容器の注出孔の位置に正確に注出口栓が配設しなくても機能に沿って開封ができる。
包装材料の製造、容器の包装充填工程において、安定した高い稼働率で、製造することができるできる。
容器への注出口栓の接合工程において、安定した高い稼働率で、接合することができる。
開封直後に開封刃から容易に取り外すことができる。
【図面の簡単な説明】
【図１】この発明の一実施の形態である注出栓を示す分解側面図
【図２】この実施形態の注出栓の分解断面図
【図３】この実施形態の注出栓の部分省略分解斜視図
【図４】本発明の一実施の形態である注出栓の開封作用を説明する概略断面図
【図５】この実施形態の注出栓の開封刃の概略正面図
【符号の説明】
１・・・スパウト
２・・・キャップ
３・・・開封刃[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spout stopper and a liquid packaging container.
[0002]
[Prior art]
A spout provided in the spout hole of the liquid paper container sealed with a breakable sealing film, a cap that covers the spout, and a spout that is built into the cap, reversely to the spout hole in conjunction with the rotational opening movement The spout stopper composed of an opening blade that moves downward and its liquid packaging container include, for example, Japanese Utility Model Application Sho 60-62027, Japanese Utility Model Application Sho 63-86021, Japanese Utility Model Application Sho 63-86022, Japanese Utility Model Application Sho 63-169425, Japanese Utility Model 63-169427, Japanese Utility Model 63-169428, Japanese Utility Model 63-190034, Japanese Utility Model 63-194153, Japanese Utility Model 63-1978620, Japanese Utility Model 63-197828, Japanese Utility Model 63-202649, Japanese Kaisho 63-202650, actual open Hei 01-2728, actual open Hei 01-2729, actual open Hei 01-9128, actual open Hei 01-11930, actual open Hei 01-23475, actual open Hei 01-66324, actual open Hei 01-35827, actual open Hei 01-35828, actual open flat 01-47652, actual open flat 01-122429, real open flat 01-126925, real open flat 02-1627, real open flat 03-8130, real open flat 03-114722, JP 06-92353, JP 08-92353 183555, JP 09-12025, JP 10-139057, JP 10-194276, JP 10-245064, JP 10-273167, JP 11-115962, JP 11-130121, JP 11-130122, JP 11-139449, JP 11-227817, JP 11-222231, JP 2000-264359 A, and the like are known.
[0003]
[Problems to be solved by the invention]
A spout provided in the spout hole of the liquid paper container sealed with a breakable sealing film, a cap that covers the spout, and a spout that is built into the cap, reversely to the spout hole in conjunction with the rotational opening movement The spout stopper and its liquid packaging container consisting of an opening blade that moves downward must be easily detached from the interlocking opening blade and removed immediately after opening.
If the spout stopper is not disposed accurately at the position of the spout hole of the liquid paper container sealed with the breakable sealing film, it cannot be opened according to the function. Accurate placement requires precise positioning of the dispensing holes in the liquid paper container and precise joining of the spout caps during the manufacturing process.
It is eagerly desired that even a powerless consumer such as a child can open the spout tap easily and easily.
The present invention responds to the above-mentioned need and longing, and can be easily removed from the opening blade immediately after opening, and the spout stopper is not disposed accurately at the position of the discharge hole of the liquid paper container. Can be opened according to the function, and can be implemented at a stable and high operating rate in the manufacturing process of packaging materials, packaging and filling of containers, and the process of joining outlets to containers. The purpose is to provide.
[0004]
[Means for Solving the Problems]
The spout stopper and the liquid packaging container of the present invention that solves this problem are provided with a first engagement fin that transmits a rotational force to the opening blade perpendicularly from the bottom surface of the top plate of the cap. A cylindrical portion and a projecting blade provided at the lower center of the cylindrical portion and a tapered portion are provided. A second engaging fin is provided vertically on the inner peripheral surface of the cylindrical portion of the opening blade, and the tapered portion has a steep slope and a gentle slope. The diameter of the pouring hole is smaller than the inner diameter of the spout pouring cylinder.
As a result, it can be easily removed from the opening blade immediately after opening, and it can be opened according to the function even if the outlet plug is not arranged accurately at the position of the outlet hole of the liquid paper container. In the packaging process of the container and the splicing process of the spout stopper to the container, a spout stopper and a liquid packaging container that can be manufactured at a stable and high operating rate are obtained.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention is a spout provided in a pouring hole of a liquid paper container sealed with a breakable sealing film, and comprising a spout cylinder and a base, and a cap covering the spout And a spout that is built into the spout and that opens in a spiral manner in conjunction with the spiral up-and-down movement of the cap.
The cap is provided with a plurality of first engaging fins that transmit a rotational force to the opening blade substantially vertically from the bottom surface of the top plate of the cap,
The inner peripheral surface of the cap and the outer peripheral surface of the spout pipe are provided with screwing portions for moving the cap up and down spirally when opening and closing the cap,
The unsealing blade is screwed with a screwing portion provided on the inner peripheral surface of the spout pipe of the spout, and is a screwing portion that moves up and down spirally in conjunction with the spiral vertical movement of the cap. A cylindrical portion having an outer peripheral surface, a projecting blade provided at the lower center of the cylindrical portion, and a tapered portion that supports the projecting blade from the lower edge of the cylindrical portion and has a liquid through hole,
The cap is engaged vertically with the inner peripheral surface of the cylindrical portion of the opening blade, and the cap is engaged with the cap when the cap moves upward in a spiral shape, and rotational force is transmitted from the cap to the opening blade. A second engagement fin that is not reliably engaged during the spiral movement of
The tapered portion is continuously or discontinuously, over protruding Okoshiha from the cap cylinder lower edge end, have a steep and gentle slope,
The diameter of the dispensing hole is smaller than the inner diameter of the spout dispensing cylinder,
Due to the downward spiral rotating motion, the projecting blade first breaks the sealing film, the gentle slope of the taper part expands the breakage of the film, and the steep slope of the taper part pushes and bends the end of the pouring hole inward. It is characterized by.
[0006]
The invention according to claim 2 has a spout hole sealed with a breakable sealing film at the top, a spout provided in the spout hole and made up of a spout cylinder and a base, and covering the spout. A liquid packaging container having a spout stopper comprising a cap and an opening blade built in the spout and moving upward and downward spirally in conjunction with the spiral vertical movement of the cap,
The cap is provided with a plurality of first engaging fins that transmit a rotational force to the opening blade substantially vertically from the bottom surface of the top plate of the cap,
The inner peripheral surface of the cap and the outer peripheral surface of the spout pipe are provided with screwing portions for moving the cap up and down spirally when opening and closing the cap,
The unsealing blade is screwed with a screwing portion provided on the inner peripheral surface of the spout pipe of the spout, and is a screwing portion that moves up and down spirally in conjunction with the spiral vertical movement of the cap. A cylindrical portion having an outer peripheral surface, a projecting blade provided at the lower center of the cylindrical portion, and a tapered portion that supports the projecting blade from the lower edge of the cylindrical portion and has a liquid through hole,
The cap is engaged vertically with the inner peripheral surface of the cylindrical portion of the opening blade, and the cap is engaged with the cap when the cap moves upward in a spiral shape, and rotational force is transmitted from the cap to the opening blade. A second engagement fin that is not reliably engaged during the spiral movement of
The tapered portion has a steep slope and a gentle slope continuously or discontinuously from the lower edge of the cap cylindrical portion to the protruding blade,
The diameter of the Note Deana is rather smaller than the inner diameter of the spout pouring cylinder
Due to the downward helical rotational movement, the protruding blade first breaks the sealing film, the gentle slope of the tapered portion enlarges the break of the film, and the steep slope of the tapered portion is the end of the pouring hole Is characterized by being bent inward .
[0007]
The present invention having the above configuration functions as follows.
The packaging container for liquid in this invention has the pouring hole sealed with the sealing film which can be fractured | ruptured in the top part. The container is formed of a laminated packaging material such as paper, and the packaging material is perforated at the top of the container to form a pouring hole. The pouring hole is sealed with a barrier plastic film or the like.
The base of the spout is joined to the top of the container and in the vicinity of the pouring hole, and the pouring stopper is fixed to and supported by the container. The spout pour tube forms a passage through which the liquid in the container is poured.
The opening blade is built in the spout and moves downward in a spiral manner in conjunction with the upward movement of the spiral when the cap is opened. As a result, the opening blade breaks the sealing film that can break the pouring hole.
[0008]
The cap covers the spout and protects the spout hole, and the rotational movement of the cap generates a film breaking force of the opening blade at the time of opening. The cap is provided with a plurality of first engagement fins. The first engagement fin is provided substantially vertically from the lower surface of the top plate of the cap, and transmits a rotational force to the opening blade.
Screwed portions, that is, screws or screw-like ridges / grooves, which are spirally moved up and down, are respectively provided on the inner peripheral surface of the cap and the outer peripheral surface of the spout pipe. By rotating the cap, it slides up and down spirally along the threaded portion. Cap can be opened and closed.
The spout has a threaded portion provided on the inner peripheral surface of the dispensing cylinder. The unsealing blade is screwed by the screwed portion and the screwed portion of the outer peripheral surface of the cylindrical portion. By the screwing, the opening blade moves downward in a spiral manner in conjunction with the spiral vertical movement of the cap, that is, the opening blade is lowered by the rising of the cap. A protruding blade provided at the lower center of the cylindrical portion first easily breaks one point near the approximate center of the sealing film of the pouring hole.
The taper portion mechanically supports the protruding blade from the lower edge of the cylindrical portion and has a liquid through-hole, so that the liquid of the container contents is allowed to pass at the time of dispensing after opening. The tapered portion has a steep slope and a gentle slope, continuously or discontinuously, extending from the lower edge of the cap cylindrical portion to the protruding blade. After the first breakage of the projecting blade, the taper portion enlarges the breakage of the film by a gentle slope, and pushes and bends the end of the pouring hole inward by the steep slope, thereby further expanding the pouring area. Moreover, the broken film piece that obstructs the outflow of the liquid can be pushed away by the pushing and bending.
[0009]
The second engagement fin provided vertically on the inner peripheral surface of the cylindrical portion of the opening blade engages with the engagement fin of the cap during the spiral upward movement, and transmits rotational force from the cap to the opening blade. However, they do not engage reliably during the helical downward movement of the cap. As a result, at the same time that the cap is rotated upward at the time of opening, the opening blade is surely rotated downward to break the film. When the opening is finished and the cap is detached from the spout, the first engaging fin and the second engaging fin are both vertically provided, so that the opening blade is engaged with the spout or the container. Even if they are both, both easily disengage up and down.
The diameter of the dispensing hole is smaller than the inner diameter of the spout dispensing cylinder. Therefore, as long as the protruding blade at the center of the unsealing blade is positioned on the film of the dispensing hole, the unsealing function can be easily exerted, so that it is not necessary to accurately position the dispensing tap.
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0010]
(Embodiment 1)
FIG. 1 is an exploded side view showing a spout according to an embodiment of the present invention. In FIG. 1, a spout is provided in a spout hole 21 of a liquid paper container sealed with a breakable sealing film 20, and covers a spout 1 composed of a spout cylinder 1 a and a base 1 b, and the spout 1. It consists of a cap 2 and an opening blade 3 which is built in the spout 1 and moves upward and downward spirally in conjunction with the spiral vertical movement of the cap 2.
FIG. 3 is a partially omitted exploded perspective view of the spout tap of this embodiment.
The cap 2 is provided with a plurality (four) of first engaging fins 2 a that transmit a rotational force to the opening blade 3 substantially vertically from the bottom surface of the top plate of the cap 2.
The inner peripheral surface of the cap 2 and the outer peripheral surface of the spout cylinder 1a of the spout 1 are respectively provided with screwing portions for moving the cap up and down spirally when opening and closing.
The unsealing blade 3 is screwed with a screwed portion provided on the inner peripheral surface of the dispensing cylinder 1a of the spout 1 so as to move up and down spirally in conjunction with the spiral vertical movement of the cap 2. A cylindrical portion 3a having an outer peripheral surface, a protruding blade 3b (not shown in FIG. 3) provided at the lower center of the cylindrical portion, and supporting the protruding blade 3b from the lower edge of the cylindrical portion 3a and penetrating for liquid And a tapered portion 3c (not shown in FIG. 3) having a hole.
[0011]
The cap is engaged with the engaging fin 2a of the cap vertically when the cap 2 is moved in a spiral manner, and the rotational force is transmitted from the cap 2 to the unsealing blade 3 in the vertical direction on the inner peripheral surface of the cylindrical portion of the opening blade 3, A second engagement fin 3d that is not reliably engaged during the downward spiral movement is provided. As shown in FIG. 5, which is a schematic front view of the opening blade, in this embodiment, four fins 3d are formed.
FIG. 2 is an exploded cross-sectional view of the spout according to this embodiment.
In this embodiment, the tapered portion l3c has a steep slope 3c1 and a gentle slope 3c2 extending discontinuously from the lower edge of the cap cylindrical portion 3a to the protruding blade 3b.
[0012]
The function of the pouring tap of this form will be described.
FIG. 4 is a schematic cross-sectional view for explaining the opening operation of the spout. FIG. 5 is a schematic front view of the opening blade.
The unsealing blade 3 is built in the spout 1 and moves downward spirally in conjunction with the upward spiral movement when the cap 2 is opened. As a result, the opening blade 3 breaks the sealing film 20 of the dispensing hole.
That is, the unsealing blade 3 is lowered by the raising of the cap 2. First, the protruding blade 3b provided at the lower center of the cylindrical portion 3a easily breaks one point near the approximate center of the sealing film 20 of the extraction hole.
The tapered portion 3c mechanically supports the protruding blade 3b and has a liquid through hole 3e. From the liquid through-hole 3e, the liquid of the container contents passes at the time of dispensing after opening. The taper part 3c has a steep slope and a gentle slope discontinuously. The taper portion 3c expands the breakage of the film by a gentle slope after the first breakage of the protruding blade 3b, pushes and bends the end of the pouring hole inward by the steep slope, and further expands the pouring area. Bending also pushes away broken film pieces that impede liquid outflow.
[0013]
The second engaging fin 3d provided vertically up and down on the inner peripheral surface of the cylindrical portion 3a of the opening blade 3 engages with the engaging fin 2a of the cap during the spiral upward movement to open the rotational force from the cap. It is transmitted to the blade. However, it does not engage reliably during the downward spiral movement of the cap. At the same time as the cap 2 is rotated upward at the time of opening, the opening blade 3 is reliably rotated downward to break the film. When the opening is completed and the cap 2 is detached from the spout 1, the first engaging fin 2a and the second engaging fin 3d are both provided vertically and vertically, so that the opening blade 3 is engaged with the spout 1 or the container. Even if they are combined, both sides can easily be separated from each other.
The diameter of the dispensing hole 21 is smaller than the inner diameter of the spout 1 dispensing cylinder. Therefore, as long as the protruding blade at the center of the opening blade is positioned on the film of the dispensing hole, the opening function can be easily exhibited. In this form, it is not necessary to position the pouring tap accurately.
[0014]
【The invention's effect】
As described above, according to the present invention, the following advantageous effects can be obtained.
Even if the spout stopper is not disposed accurately at the position of the spout hole of the liquid paper container, it can be opened according to the function.
In the production of packaging materials and the packaging and filling process of containers, it can be produced at a stable high operating rate.
In the joining step of the spout stopper to the container, it can be joined at a stable high operating rate.
It can be easily removed from the opening blade immediately after opening.
[Brief description of the drawings]
FIG. 1 is an exploded side view showing a spout according to an embodiment of the present invention. FIG. 2 is an exploded cross-sectional view of the spout of the embodiment. FIG. FIG. 4 is a schematic cross-sectional view for explaining the opening action of the spout tap according to one embodiment of the present invention. FIG. 5 is a schematic front view of the opening blade of the spout tap according to this embodiment. ]
1 ... Spout 2 ... Cap 3 ... Opening blade

Claims

A spout provided in a pouring hole of a liquid paper container sealed with a breakable sealing film, comprising a spout cylinder and a base, a cap covering the spout, and a spiral of the cap built in the spout An unsealing blade that spirally moves up and down in conjunction with vertical movement,
The cap is provided with a plurality of first engaging fins that transmit a rotational force to the opening blade substantially vertically from the bottom surface of the top plate of the cap,
The inner peripheral surface of the cap and the outer peripheral surface of the spout pipe are provided with screwing portions for moving the cap up and down spirally when opening and closing the cap,
The unsealing blade is screwed with a screwing portion provided on the inner peripheral surface of the spout pipe of the spout, and is a screwing portion that moves up and down spirally in conjunction with the spiral vertical movement of the cap. A cylindrical portion having an outer peripheral surface, a projecting blade provided at the lower center of the cylindrical portion, and a tapered portion that supports the projecting blade from the lower edge of the cylindrical portion and has a liquid through hole,
The cap is engaged vertically with the inner peripheral surface of the cylindrical portion of the opening blade, and the cap is engaged with the cap when the cap moves upward in a spiral shape, and rotational force is transmitted from the cap to the opening blade. A second engagement fin that is not reliably engaged during the spiral movement of
The tapered portion is continuously or discontinuously, over protruding Okoshiha from the cap cylinder lower edge end, have a steep and gentle slope
The diameter of the pouring hole is smaller than the inner diameter of the spout pouring cylinder.
Due to the downward helical rotational movement, the protruding blade first breaks the sealing film, the gentle slope of the tapered portion enlarges the break of the film, and the steep slope of the tapered portion is the end of the pouring hole A spout stopper characterized by pushing and bending inward .

A spout hole sealed with a breakable sealing film at the top, a spout provided in the spout hole, comprising a spout cylinder and a base, a cap covering the spout, and a cap built in the spout A liquid packaging container having a spout stopper composed of an opening blade that spirally moves up and down in conjunction with the spiral vertical movement of
The cap is provided with a plurality of first engaging fins that transmit a rotational force to the opening blade substantially vertically from the bottom surface of the top plate of the cap,
The inner peripheral surface of the cap and the outer peripheral surface of the spout pipe are provided with screwing portions for moving the cap up and down spirally when opening and closing the cap,
The unsealing blade is screwed with a screwing portion provided on the inner peripheral surface of the spout pipe of the spout, and is a screwing portion that moves up and down spirally in conjunction with the spiral vertical movement of the cap. A cylindrical portion having an outer peripheral surface, a projecting blade provided at the lower center of the cylindrical portion, and a tapered portion that supports the projecting blade from the lower edge of the cylindrical portion and has a liquid through hole,
The cap is engaged vertically with the inner peripheral surface of the cylindrical portion of the opening blade, and the cap is engaged with the cap when the cap moves upward in a spiral shape, and rotational force is transmitted from the cap to the opening blade. A second engagement fin that is not reliably engaged during the spiral movement of
The tapered portion has a steep slope and a gentle slope continuously or discontinuously from the lower edge of the cap cylindrical portion to the protruding blade,
The diameter of the Note Deana is rather smaller than the inner diameter of the spout pouring cylinder
Due to the downward helical rotational movement, the protruding blade first breaks the sealing film, the gentle slope of the tapered portion enlarges the break of the film, and the steep slope of the tapered portion is the end of the pouring hole A beverage packaging container characterized by being bent inward .