JP2021185090A

JP2021185090A - Spout plug

Info

Publication number: JP2021185090A
Application number: JP2020090355A
Authority: JP
Inventors: 祐輔仲野; Yusuke Nakano
Original assignee: Toppan Printing Co Ltd
Current assignee: Toppan Inc
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-12-09

Abstract

To provide a spout plug that is easy to open.SOLUTION: A spout plug includes: a spout including a cylindrical tubular portion having an external screw and a partition wall that closes an inside of the tubular portion; and a cap which includes a tubular peripheral wall portion having an internal screw, and a top surface portion that closes one end of the peripheral wall portion, and which cap is attached to the spout in a state where the external screw is screwed with the internal screw. An annular thin wall part along an inner peripheral surface of the tubular portion is provided on the partition wall. The partition wall of the spout and an inner surface of the top surface portion of the cap are connected via two or more columnar ribs.SELECTED DRAWING: Figure 1

Description

本発明は、包装容器に設けられる注出口栓に関する。 The present invention relates to a spout plug provided in a packaging container.

酒類や調味料等の流動性のある内容物の包装容器として、樹脂製の注出口栓を設けたものが広く使用されている。注出口栓は、円筒形の筒部を有するスパウトと、スパウトに着脱自在に取り付けられるキャップとを備える。スパウトには、筒部の内部を閉塞する隔壁が設けられ、未開栓の包装容器の内部を密閉状態に維持することができる。隔壁には環状のハーフカット等からなる薄肉部とプルリングが設けられ、開栓時には、プルリングを引っ張って薄肉部を破断させることにより隔壁を取り除くことができる（例えば、特許文献１参照）。 As a packaging container for fluid contents such as alcoholic beverages and seasonings, a container provided with a resin spout / outlet plug is widely used. The spout plug includes a spout having a cylindrical tubular portion and a cap that can be detachably attached to the spout. The spout is provided with a partition wall that closes the inside of the cylinder portion, and the inside of the unopened packaging container can be maintained in a sealed state. The partition wall is provided with a thin-walled portion and a pull ring made of an annular half-cut or the like, and at the time of opening, the partition wall can be removed by pulling the pull ring to break the thin-walled portion (see, for example, Patent Document 1).

また、特許文献２には、キャップの天面部及びスパウトの隔壁に、中心軸周りの相対回転を規制した状態で互いに係合するキャップ側係合部及び隔壁側係合部をそれぞれ設け、キャップの回転操作に伴って薄肉部を破断させることにより、プルリングなしで開栓可能とした注出口栓が記載されている。 Further, in Patent Document 2, a cap-side engaging portion and a partition-side engaging portion that engage with each other in a state where relative rotation around the central axis is restricted are provided on the top surface portion of the cap and the partition wall of the spout, respectively. A spout plug that can be opened without a pull ring by breaking the thin-walled portion with a rotation operation is described.

特開２０００−２９６８６５号公報Japanese Unexamined Patent Publication No. 2000-296865 特開２０１９−３４７６０号公報Japanese Unexamined Patent Publication No. 2019-34760

特許文献２に記載の注出口栓では、隔壁に設ける薄肉部の形状を工夫することにより、開栓時に必要なトルクの低減が図られている。 In the spout plug described in Patent Document 2, the torque required at the time of opening is reduced by devising the shape of the thin-walled portion provided on the partition wall.

しかしながら、特許文献２に記載のキャップ側係合部及び隔壁側係合部の構造では、達成できるトルクの大きさに限界があり、更なる改善の余地があった。 However, in the structure of the cap side engaging portion and the partition wall side engaging portion described in Patent Document 2, there is a limit to the magnitude of the torque that can be achieved, and there is room for further improvement.

それ故に、本発明は、開栓が容易な注出口栓を提供することを目的とする。 Therefore, it is an object of the present invention to provide a spout plug that is easy to open.

本発明に係る注出口栓は、外ネジを有する円筒形の筒部と、筒部の内部を閉鎖する隔壁とを有するスパウトと、内ネジを有する円筒形の周壁部と、周壁部の一端を閉鎖する天面部とを有し、外ネジ及び内ネジが螺合した状態でスパウトに取り付けられたキャップとを備え、隔壁には、筒部の内周面に沿う環状薄肉部が設けられており、スパウトの隔壁と、キャップの天面部の内面とが、２以上の柱状のリブにより接続されているものである。 The spout plug according to the present invention has a cylindrical tubular portion having an external screw, a spout having a partition wall that closes the inside of the tubular portion, a cylindrical peripheral wall portion having an internal screw, and one end of the peripheral wall portion. It has a top surface that closes, a cap that is attached to the spout with the external and internal screws screwed in, and the partition wall is provided with an annular thin wall along the inner peripheral surface of the cylinder. , The partition wall of the spout and the inner surface of the top surface portion of the cap are connected by two or more columnar ribs.

本発明によれば、開栓が容易な注出口栓を提供できる。 According to the present invention, it is possible to provide a spout plug that can be easily opened.

実施形態に係る注出口栓の概略構成を示す断面図Sectional drawing which shows the schematic structure of the spout plug according to embodiment 図１に示した注出口栓を構成するスパウトの上面図Top view of the spout constituting the spout plug shown in FIG. 図１に示した注出口栓を構成するキャップの底面図Bottom view of the cap constituting the spout plug shown in FIG.

図１は、実施形態に係る注出口栓の概略構成を示す断面図であり、図２は、図１に示した注出口栓を構成するスパウトの上面図であり、図３は、図１に示した注出口栓を構成するキャップの底面図である。 FIG. 1 is a cross-sectional view showing a schematic configuration of a spout plug according to an embodiment, FIG. 2 is a top view of a spout constituting the spout plug shown in FIG. 1, and FIG. 3 is shown in FIG. It is a bottom view of the cap constituting the spout plug shown.

注出口栓１は、スパウト２とスパウト２に取り付けられたキャップ３とを備える。 The spout plug 1 includes a spout 2 and a cap 3 attached to the spout 2.

スパウト２は、筒部４、隔壁５及びフランジ部６を備える。筒部４は、スパウト２が取り付けられた包装容器から内容物を注出するための円筒形状の部材である。筒部４の外周面には、キャップ３を螺合させるための外ネジ１５が設けられる。隔壁５は、筒部４の内部を閉鎖し、未開栓時における包装容器の内部を密閉状態に維持する。隔壁５には、筒部４の内周面に沿って、円環状のハーフカット等からなる薄肉部７が設けられている。薄肉部７は、開栓時における隔壁５の除去の際に、破断のきっかけとなる部分である。フランジ部６は、筒部４の一方の端部（図１における下端部）に連設され、筒部４の外方側に延びる部材であり、紙パックやパウチ等の容器本体にシールするために用いられる。 The spout 2 includes a tubular portion 4, a partition wall 5, and a flange portion 6. The tubular portion 4 is a cylindrical member for pouring the contents from the packaging container to which the spout 2 is attached. An external screw 15 for screwing the cap 3 is provided on the outer peripheral surface of the tubular portion 4. The partition wall 5 closes the inside of the tubular portion 4 and keeps the inside of the packaging container in a closed state when the container is not opened. The partition wall 5 is provided with a thin-walled portion 7 made of an annular half-cut or the like along the inner peripheral surface of the tubular portion 4. The thin-walled portion 7 is a portion that triggers breakage when the partition wall 5 is removed at the time of opening. The flange portion 6 is a member that is connected to one end of the cylinder portion 4 (the lower end portion in FIG. 1) and extends outward of the cylinder portion 4, and is used to seal the container body such as a paper pack or a pouch. Used for.

キャップ３は、円筒形状の周壁部８及び円形状の天面部９を備える。周壁部８の内周面には、スパウト２の外ネジ１５と螺合する内ネジ１６が設けられる。また、天面部９の内面には、環状のインナーリング１７が設けられている。インナーリング１７は、キャップ３をスパウト２に螺合させた状態において、スパウト２の筒部４の内部に嵌合すると共に、筒部４の内周面に当接することによって、開栓後の包装容器を密閉する機能を有する。 The cap 3 includes a cylindrical peripheral wall portion 8 and a circular top surface portion 9. An internal screw 16 to be screwed with the external screw 15 of the spout 2 is provided on the inner peripheral surface of the peripheral wall portion 8. Further, an annular inner ring 17 is provided on the inner surface of the top surface portion 9. In a state where the cap 3 is screwed into the spout 2, the inner ring 17 fits inside the tubular portion 4 of the spout 2 and abuts on the inner peripheral surface of the tubular portion 4, so that the inner ring 17 is packaged after opening. It has the function of sealing the container.

更に、スパウト２及びキャップ３には、第１の柱状体１１及び第２の柱状体１２がそれぞれ２本ずつ設けられている。 Further, the spout 2 and the cap 3 are provided with two first columnar bodies 11 and two second columnar bodies 12.

スパウト２に設けられた第１の柱状体１１は、一端が隔壁５に接続され、筒部４の注出端側（図１における上端側）に向かって筒部４の軸方向に沿って延びるように形成されている。本実施形態では、第１の柱状体１１は、筒形状に形成されており、隔壁５に接続された端部とは反対側の端部が開放された中空部１８を有する。また、２本の第１の柱状体１１は、隔壁５の中心に対して点対称に、かつ、隔壁５の径方向に整列するように配置されている。 One end of the first columnar body 11 provided on the spout 2 is connected to the partition wall 5, and extends along the axial direction of the tubular portion 4 toward the pouring end side (upper end side in FIG. 1) of the tubular portion 4. It is formed like this. In the present embodiment, the first columnar body 11 is formed in a tubular shape and has a hollow portion 18 having an open end on the side opposite to the end connected to the partition wall 5. Further, the two first columnar bodies 11 are arranged so as to be point-symmetrical with respect to the center of the partition wall 5 and aligned in the radial direction of the partition wall 5.

キャップ３に設けられた第２の柱状体１２は、一端が天面部９に接続され、周壁部８の開放端側に向かって周壁部８の軸方向に沿って延びるように形成されている。本実施形態では、２本の第２の柱状体１２は、天面部９の中心に対して点対称に、かつ、天面部９の径方向に第１の柱状体１１における一対の中空部１８と同間隔で整列するように配置されている。また、第２の柱状体１２は、第１の柱状体１１の中空部１８とほぼ同形状に形成されており、第１の柱状体１１の中空部に係合している。 One end of the second columnar body 12 provided on the cap 3 is connected to the top surface portion 9 and is formed so as to extend along the axial direction of the peripheral wall portion 8 toward the open end side of the peripheral wall portion 8. In the present embodiment, the two second columnar bodies 12 are point-symmetrically with respect to the center of the top surface portion 9 and with the pair of hollow portions 18 in the first columnar body 11 in the radial direction of the top surface portion 9. They are arranged so as to be aligned at the same interval. Further, the second columnar body 12 is formed in substantially the same shape as the hollow portion 18 of the first columnar body 11, and is engaged with the hollow portion of the first columnar body 11.

第１の柱状体１１及び第２の柱状体１２は、互いに係合することにより、キャップ３の天面部９及びスパウト２の隔壁５の対向面同士を接続するリブ１０を構成する（図１参照）。本実施形態においては、２本のリブ１０は、スパウト２の中心軸から偏心しており、薄肉部７が形成された箇所の近傍に配置されている。 The first columnar body 11 and the second columnar body 12 are engaged with each other to form a rib 10 that connects the facing surfaces of the top surface portion 9 of the cap 3 and the partition wall 5 of the spout 2 (see FIG. 1). ). In the present embodiment, the two ribs 10 are eccentric from the central axis of the spout 2 and are arranged in the vicinity of the portion where the thin wall portion 7 is formed.

スパウト２及びキャップ３は、それぞれ樹脂の射出成型により一体成型される。スパウト２の成型材料としては、例えば、ポリエチレンを用いることができ、キャップ３の成型材料としては、例えば、ポリエチレンまたはポリプロピレンを用いることができる。別個に成型されたスパウト２及びキャップ３は、打栓により組み合わされる。すなわち、治具で支持したスパウト２に対して、第１の柱状体１１の中空部１８と第２の柱状体１２とが対応するようにキャップ３を位置合わせした後、キャップ３をスパウト２側に打ち込むことにより、外ネジ１６に内ネジ１５を乗り越えさせ、外ネジ１６及び内ネジ１５を螺合させた状態とする。同時に、第２の柱状体１２は、第１の柱状体１１の中空部１８に係合する。 The spout 2 and the cap 3 are integrally molded by injection molding of resin, respectively. As the molding material of the spout 2, for example, polyethylene can be used, and as the molding material of the cap 3, for example, polyethylene or polypropylene can be used. The separately molded spout 2 and cap 3 are combined by tapping. That is, after aligning the cap 3 so that the hollow portion 18 of the first columnar body 11 and the second columnar body 12 correspond to the spout 2 supported by the jig, the cap 3 is placed on the spout 2 side. By driving into, the external screw 16 is made to get over the internal screw 15, and the external screw 16 and the internal screw 15 are screwed together. At the same time, the second columnar body 12 engages with the hollow portion 18 of the first columnar body 11.

上述したとおり、本実施形態に係る注出口栓１には、スパウト２の隔壁５とキャップ３の天面部９とを接続する２本の柱状のリブ１０が設けられている。開栓時に、キャップ３を回転させると、柱状のリブ１０は、よじれて撓むため、隔壁５におけるリブ１０の根元（第１の柱状体１１の接続部）近傍の部分には、撓んだリブ１０から上下方向に力が加わる。この上下方向の力により、隔壁５に設けられた薄肉部７を容易に破断させることができる。キャップ３を更に回転させると、キャップ３の回転に伴うリブ１０の軸中心周りの回転と軸方向への移動（図１における上方向への移動）により、薄肉部７の破断が進行し、最終的に薄肉部７が全周に渡って破断し、隔壁５が筒部４から完全に分離する。本実施形態に係る注出口栓１においては、２本のリブ１０のよじれにより生じた上下方向の力により薄肉部７が破断しやすいため、開栓に要するトルクを小さくすることができる。したがって、本実施形態によれば、従来の注出口栓と比べて小さい力で開栓が可能な注出口栓１を構成することができる。 As described above, the spout plug 1 according to the present embodiment is provided with two columnar ribs 10 for connecting the partition wall 5 of the spout 2 and the top surface portion 9 of the cap 3. When the cap 3 is rotated at the time of opening, the columnar rib 10 is twisted and bent, so that the portion of the partition wall 5 near the root of the rib 10 (the connection portion of the first columnar body 11) is bent. A force is applied vertically from the rib 10. By this vertical force, the thin-walled portion 7 provided on the partition wall 5 can be easily broken. When the cap 3 is further rotated, the thin-walled portion 7 is broken due to the rotation of the rib 10 around the axis center and the axial movement (upward movement in FIG. 1) accompanying the rotation of the cap 3, and finally. The thin-walled portion 7 is broken over the entire circumference, and the partition wall 5 is completely separated from the tubular portion 4. In the spout plug 1 according to the present embodiment, the thin-walled portion 7 is easily broken by the vertical force generated by the twisting of the two ribs 10, so that the torque required for opening the plug can be reduced. Therefore, according to the present embodiment, it is possible to configure the spout plug 1 that can be opened with a smaller force than the conventional spout plug.

尚、上記の実施形態では、スパウト２の隔壁５とキャップ３の天面部９とを２本のリブ１０で接続した例を説明したが、リブ１０の数は、３本以上であっても良い。ただし、スパウト２にキャップ３を打栓する際に、第１の柱状体１１及び第２の柱状体１２の位置合わせが必要であるので、リブ１０の数を２〜４本とすることが注出口栓１の生産効率の面で好ましい。 In the above embodiment, an example in which the partition wall 5 of the spout 2 and the top surface portion 9 of the cap 3 are connected by two ribs 10 has been described, but the number of ribs 10 may be three or more. .. However, since it is necessary to align the first columnar body 11 and the second columnar body 12 when the cap 3 is plugged into the spout 2, it is necessary to set the number of ribs 10 to 2 to 4. It is preferable in terms of the production efficiency of the outlet plug 1.

また、上記の実施形態では、第１の柱状体１１を中空の筒形状とし、第１の柱状体１１１の中空部１８に第２の柱状体１２を係合させた例を説明したが、第２の柱状体１２を中空の筒形状とし、第１の柱状体１２を第２の柱状体１２に設けた中空部に係合させても良い。 Further, in the above embodiment, an example in which the first columnar body 11 has a hollow tubular shape and the second columnar body 12 is engaged with the hollow portion 18 of the first columnar body 111 has been described. The columnar body 12 of 2 may have a hollow tubular shape, and the first columnar body 12 may be engaged with the hollow portion provided in the second columnar body 12.

また、第１の柱状体１１及び第２の柱状体１２の断面形状は特に限定されず、任意の形状で良い。 Further, the cross-sectional shapes of the first columnar body 11 and the second columnar body 12 are not particularly limited, and may be any shape.

また、第１の柱状体１１及び第２の柱状体１２は、開栓後のキャップ３からの隔壁５が容易に離脱しない程度に係合していれば良い。例えば、第２の柱状体１２の外径を第１の柱状体１１に設けた中空部１８の内径より僅かに大きく成型し、打栓時に第２の柱状体１２を中空部１８に圧入することにより、第１の柱状体１１及び第２の柱状体１２の軸方向における相対移動を規制することができる。 Further, the first columnar body 11 and the second columnar body 12 may be engaged with each other to the extent that the partition wall 5 from the cap 3 after opening is not easily detached. For example, the outer diameter of the second columnar body 12 is molded to be slightly larger than the inner diameter of the hollow portion 18 provided in the first columnar body 11, and the second columnar body 12 is press-fitted into the hollow portion 18 at the time of plugging. Therefore, the relative movement of the first columnar body 11 and the second columnar body 12 in the axial direction can be regulated.

図２に示したスパウト及び図３に示したキャップを成型し、打栓により両者を係合させて図１に示した注出口栓を作製した。スパウト２は、弾性率が１４０ＭＰａの低密度ポリエチレンで成型し、円環状のハーフカットの半径を８ｍｍ、ハーフカットの厚みを０．１５ｍｍとした。キャップは、ポリプロピレンにて成型した。 The spout shown in FIG. 2 and the cap shown in FIG. 3 were molded and engaged with each other by tapping to prepare the spout plug shown in FIG. The spout 2 was molded from low-density polyethylene having an elastic modulus of 140 MPa, and the radius of the annular half-cut was 8 mm, and the thickness of the half-cut was 0.15 mm. The cap was molded from polypropylene.

作製した注出口栓１の開栓トルクを測定したところ、４５Ｎ・ｃｍであり、小さな力で開栓可能であることが確認された。 When the opening torque of the manufactured spout plug 1 was measured, it was 45 N · cm, and it was confirmed that the cap could be opened with a small force.

本発明は、紙パックやパウチ等の包装容器に利用できる。 The present invention can be used for packaging containers such as paper packs and pouches.

１注出口栓
２スパウト
３キャップ
４筒部
５隔壁
７薄肉部
８周壁部
９天面部
１０リブ
１１第１の柱状体
１２第２の柱状体
１５外ネジ
１６内ネジ
１８中空部 1 Spout plug 2 Spout 3 Cap 4 Cylindrical part 5 Partition wall 7 Thin-walled part 8 Peripheral wall part 9 Top surface part 10 Rib 11 First columnar body 12 Second columnar body 15 External thread 16 Internal thread 18 Hollow part

Claims

A spout having a cylindrical cylinder portion having an external screw and a partition wall that closes the inside of the cylinder portion.
It has a cylindrical peripheral wall portion having an internal screw and a top surface portion that closes one end of the peripheral wall portion, and includes a cap attached to the spout with the external screw and the internal screw screwed together.
The partition wall is provided with an annular thin-walled portion along the inner peripheral surface of the tubular portion.
A spout plug in which the partition wall of the spout and the inner surface of the top surface portion of the cap are connected by two or more columnar ribs.

Each of the ribs
A first columnar body having one end connected to the partition wall of the spout and extending in the axial direction of the cylinder portion,
The note according to claim 1, wherein one end is connected to the inner surface of the top surface portion of the cap and includes a second columnar body extending in the axial direction of the cap and engaging with the first columnar body. Outlet plug.

The first columnar body has a tubular shape having a hollow portion with the other end open.
The spout plug according to claim 2, wherein the second columnar body is engaged with the hollow portion of the first columnar body.

The spout plug according to any one of claims 1 to 3, wherein each of the ribs is provided in the vicinity of the portion where the thin wall portion is formed.