JP2016011128A - Extraction device for paper container - Google Patents

Extraction device for paper container Download PDF

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JP2016011128A
JP2016011128A JP2014133537A JP2014133537A JP2016011128A JP 2016011128 A JP2016011128 A JP 2016011128A JP 2014133537 A JP2014133537 A JP 2014133537A JP 2014133537 A JP2014133537 A JP 2014133537A JP 2016011128 A JP2016011128 A JP 2016011128A
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screw
spout
male screw
screwing
paper container
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JP6377977B2 (en
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吉田　仁昭
Hitoaki Yoshida
仁昭 吉田
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Tenryu Chemical Industry Co Ltd
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Tenryu Chemical Industry Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a pull-open type extraction device to be used for a square paper container, formed so as to prevent content from leaking when laying a paper container without completely screwing a screw lid.SOLUTION: An extraction device 1 includes a body 4 and a screw lid 5. A male screw 14 is formed in a spout 7, and a female screw 18 and an inner ring 19 are formed in the screw lid 5. The male screw 14 and the female screw 18 are screws with three rows. A rotation angle at which the female screw 18 and the male screw 14 are screwed is about 270 degrees, and when the rotation angle becomes about 100 degrees before ending screwing, the inner ring 19 is engaged with the spout 7. As a result of this, content is prevented from leaking when laying a paper container in a state of not completely screwing the screw lid 5. The male screw 14 and the female screw 18 are screwed at about 270 degrees so as not to cause looseness.

Description

本願発明は、飲料等の液体の包装に多用されている箱状の紙製容器に使用する注出装置に関するものである。   The present invention relates to a pouring device used for a box-shaped paper container often used for packaging liquids such as beverages.

清酒やワイン、焼酎のようなアルコール飲料の包装に箱状の紙製容器が多用されており、この紙製容器には、注出手段として、プルオープン式の注出装置が使用されている。この注出装置は、紙製容器に溶着される本体とこれに着脱自在なねじ蓋とで構成されており、注出口にプルリングを設けて、プルリングを引っ張って、閉止板を注出口から切除することで開封される。   Box-shaped paper containers are frequently used for packaging alcoholic beverages such as sake, wine, and shochu, and a pull-open type pouring device is used as the pouring means for the paper containers. This pouring device is composed of a main body welded to a paper container and a screw lid that is detachable from the main body. A pull ring is provided at the pouring port, and the pulling ring is pulled to cut out the closing plate from the pouring port. It will be opened.

また、ねじ蓋の内部には、開封してからねじ蓋をねじ込んだ状態でのシール性を確保するため、注出口の内部に嵌入するインナーリング（中足、内筒）を設けている。   Moreover, in order to ensure the sealing performance in the state which screwed the screw lid after opening it, the inner ring (middle leg, inner cylinder) fitted in the inside of the spout is provided inside the screw lid.

この種の注出装置の一例として、特許文献１には、注出口の雄ねじとねじ蓋の雌ねじを３条ねじとすることにより、開封・封止に際してのねじ蓋の回転角度を１８０度以下と小さくすることが開示されている。   As an example of this type of pouring device, Patent Document 1 discloses that the male screw of the spout and the female screw of the screw lid are triple-threaded so that the rotation angle of the screw lid during opening and sealing is 180 degrees or less. Making it smaller is disclosed.

特開２０１２−１３６２３８号公報（特に段落００１９）JP 2012-136238 A (particularly paragraph 0019)

引用文献１のように、ねじ蓋の回転角度を１８０度以下に設定すると、開封及び封止の手間を軽減できるが、ねじ蓋の回転角度が小さ過ぎると、雌ねじと雄ねじとの引っ掛かりが弱くなって、ねじ蓋が流通段階で緩みやすくなるといった問題が懸念される。   If the rotation angle of the screw lid is set to 180 degrees or less as in the cited document 1, the trouble of opening and sealing can be reduced, but if the rotation angle of the screw lid is too small, the catch between the female screw and the male screw becomes weak. Therefore, there is a concern that the screw cap is likely to loosen at the distribution stage.

他方、紙製容器は基本的には四角形の箱状であることから、消費者が、内容物を小出しした後に寝かせた姿勢でテーブル等に置くことがあり、この場合、ねじ蓋をしっかりとねじ込んでいる場合は問題はないが、ねじ蓋のねじ込みが不完全であると、内容物が零れ出てしまうことがある。   On the other hand, since the paper container is basically a rectangular box, the consumer may place it on a table or the like in a posture where the contents are dispensed. In this case, the screw lid is screwed firmly. However, if the screw cap is not completely screwed in, the contents may spill out.

本願発明は、このような現状を改善することを主たる目的とし、更に、開封の容易性向上等も目的としている。   The main object of the present invention is to improve such a current situation, and further to improve the ease of opening.

本願発明の注出装置は、箱形の紙製容器に溶着される樹脂製の本体と、前記本体に着脱自在な樹脂製のねじ蓋とを備えており、前記本体は、前記紙製容器の表面に重なるベース板と、前記ベース板に一体に設けた注出口と、ループ状の薄肉部を介して前記注出口の内部に一体に設けた閉止板と、前記閉止板のうち薄肉部に近接した部位に設けたプルタブとを備えており、前記注出口の外周に雄ねじが形成されている。   The pouring device of the present invention comprises a resin main body welded to a box-shaped paper container, and a resin screw lid detachably attached to the main body, the main body of the paper container A base plate that overlaps the surface, a spout provided integrally with the base plate, a closing plate provided integrally inside the spout via a loop-shaped thin portion, and a proximity of the thin portion of the closing plate And a pull tab provided at the site, and a male screw is formed on the outer periphery of the spout.

一方、前記ねじ蓋は、前記注出口に外側から嵌まる筒部と、前記筒部に一体に設けた天板とを備えており、前記筒部の内面には前記雄ねじに螺合する雌ねじが形成されており、前記天板には、前記注出口の内面に嵌合して内容物の漏洩を阻止するシール用のインナーリングを設けている。   On the other hand, the screw lid includes a cylindrical portion that fits into the spout from the outside, and a top plate that is provided integrally with the cylindrical portion, and an internal thread that engages with the male screw is formed on the inner surface of the cylindrical portion. The top plate is provided with an inner ring for sealing that is fitted to the inner surface of the spout and prevents leakage of contents.

そして、請求項１の発明では、前記注出口の雄ねじとねじ蓋の雌ねじとは多条ねじであり、前記ねじ蓋は、前記雌ねじの始端が雄ねじに掛かり初めてから２００〜３００度以内の回転でねじ込み切るように設定されており、かつ、前記螺合回転角度の半分を経過した後でねじ込み終了よりも８０度程度手前の段階において前記インナーリングが注出口に嵌合開始するように設定されている。   In the invention of claim 1, the male screw of the spout and the female screw of the screw lid are multi-threaded screws, and the screw lid is rotated within 200 to 300 degrees from the beginning when the starting end of the female screw is engaged with the male screw. The inner ring is set to be screwed off, and the inner ring is set to start fitting into the spout at a stage about 80 degrees before the end of screwing after half of the screwing rotation angle has elapsed. Yes.

本願発明は請求項２，３の構成も含んでいる。このうち請求項２の発明は、前記雄ねじと雌ねじとは３条ねじに形成されていて、前記螺合回転角度は２７０度程度に設定されており、かつ、ねじ込み終了前の１００程度の段階で前記インナーリングが注出口に嵌合開始するように設定されている。   The present invention also includes the structures of claims 2 and 3. Of these, in the invention of claim 2, the male screw and the female screw are formed in a triple thread, the screwing rotation angle is set to about 270 degrees, and at the stage of about 100 before the screwing is completed. The inner ring is set to start fitting into the spout.

請求項３の発明は、請求項１又は２において、前記プルタブは、人が指を挿入するプルリングを備えており、前記プルリングは、その全周にわたって前記注出口の外側にはみ出ている。この請求項３において、「はみ出ている」は、注出口の軸心と直交した方向から見てプルリングの全体が注出口の外側にはみ出ている状態と、一部は注出口の内部に隠れて一部は露出している状態との両方を含んでいる。   According to a third aspect of the present invention, in the first or second aspect, the pull tab includes a pull ring into which a person inserts a finger, and the pull ring protrudes outside the spout over the entire circumference. In this claim 3, “extruding” means that the whole pull ring protrudes outside the spout when viewed from the direction orthogonal to the axial center of the spout, and part of the pull ring is hidden inside the spout. Some include both the exposed state.

本願発明では、ねじ蓋の雌ねじと注出口の雄ねじとは２００〜３００度の引っ掛かり代を持っているため、ねじ蓋をねじ込み切った状態で十分な締結力を確保できる。このため、流通段階でねじ蓋が緩むような事態を防止できる。   In the present invention, since the female screw of the screw lid and the male screw of the spout have a catching margin of 200 to 300 degrees, a sufficient fastening force can be ensured with the screw lid screwed off. For this reason, it is possible to prevent a situation in which the screw cap is loosened at the distribution stage.

また、ねじ蓋を注出口に十分にねじ込んでいない状態であっても、ねじ蓋のインナーリングが注出口に嵌合するため、内容物を小出ししてから紙製容器を寝かせた状態でテーブル等に置いても、内容物が零れ出ることを防止できる。従って、開封後における内容物の漏出を抑制できる。更に、雌ねじと雄ねじとが螺合してすぐにインナーリングが注出口に嵌合するものではなく、ねじ込み全ストロークの半分よりも後ろの領域でインナーリングが注出口に嵌合するため、ねじ込み抵抗が過大になることも防止できる。   Even if the screw lid is not fully screwed into the spout, the inner ring of the screw cap fits into the spout, so that the contents can be dispensed and then the paper container is laid down on a table, etc. Even if it is placed, the contents can be prevented from spilling out. Therefore, leakage of the contents after opening can be suppressed. In addition, the inner ring does not fit into the spout immediately after the female screw and male thread are screwed together, but the inner ring fits into the spout in the area after half of the full screwing stroke. Can be prevented from becoming excessive.

さて、消費者が内容物を小出ししてから紙製容器を再封止する場合、ねじ蓋を注出口に嵌め込んで回転するが、少なくとも半回転程度は、ねじ蓋を持ち変えることなく一連に回転させることができる（ねじ蓋のみでなく、紙製容器も回転させることが殆どであるため、ねじ蓋を紙製容器に対して一連に回転させる相対角度はかなり大きい。）。   Now, when a consumer dispenses the contents and then reseals the paper container, the screw cap is inserted into the spout and rotated, but at least half a turn without changing the screw cap. (It is possible to rotate not only the screw lid but also the paper container, so the relative angle of rotating the screw lid in series with respect to the paper container is quite large.)

そして、ねじ蓋をどの程度回転させてから雌ねじと雄ねじとが螺合し始めるかはまちまちであるが、本願発明では雌ねじ及び雄ねじが多条ねじであるため、ねじ蓋を回転し初めてから雌ねじと雄ねじとが螺合し始めるまでの角度は多くとも数十度であることが殆どであり、しかも、螺合し始めてからインナーリングが注出口にきっちり当接するのは、螺合が開始してから１２０〜２２０度程度であるので、殆どは、ねじ蓋を持ち変えることなく一連に回転させることで、インナーリングを注出口にきっちり嵌合させてシールすることができる。これにより、ねじ蓋を最後までねじ込み切らない状態で紙製容器を横に寝かせても、内容物の漏洩を防止することができる。   Then, how much the screw lid is rotated and how the female screw and the male screw start to be screwed together varies, but since the female screw and the male screw are multi-threaded screws in the present invention, In most cases, the angle until the male screw starts to be screwed is at most several tens of degrees, and the inner ring comes into tight contact with the spout after the screwing starts. Since it is about 120 to 220 degrees, most of the inner ring can be tightly fitted to the spout and sealed by rotating in series without changing the screw lid. Thereby, even if the paper container is laid sideways without screwing the screw lid to the end, leakage of the contents can be prevented.

特に、請求項２の構成を採用すると、雌ねじと雄ねじとが３条ねじであることにより、ねじ蓋の回転開始から雌ねじと雄ねじとの螺合開始が迅速に行われ、しかも、ねじ込み切る前の１００度程度の段階で既にインナーリングが注出口に嵌合することにより、最初の一連の回転によってシールすることが確実化されため、横に寝かせた状態での漏洩をより確実に防止できる。   In particular, when the configuration of claim 2 is adopted, since the female screw and the male screw are three-threaded screws, the screwing of the female screw and the male screw is quickly started from the start of rotation of the screw lid, and before the screwing is completed. Since the inner ring is already fitted into the spout at about 100 degrees, it is ensured that the inner ring is sealed by the first series of rotations, so that leakage in the state of lying down can be prevented more reliably.

請求項３の構成を採用すると、開封に際してプルリングに指を差し込みやすいため、開封の容易性を向上できる利点がある。   If the structure of Claim 3 is employ | adopted, since it is easy to insert a finger in a pull ring at the time of opening, there exists an advantage which can improve the ease of opening.

（Ａ）は実施形態の注出装置を紙製容器に装着した状態の側面図、（Ｂ）は本体の平面図で図２（Ａ）のIA-IA 視図である。(A) is a side view of the state in which the dispensing device of the embodiment is mounted on a paper container, (B) is a plan view of the main body, and is a view taken along the line IA-IA in FIG. （Ａ）は注出装置の分離断面図、（Ｂ）は（Ａ）のＢ−Ｂ視断面図である。(A) is the isolation | separation sectional drawing of a pouring device, (B) is a BB view sectional view of (A). （Ａ）はねじ込み切った状態での縦断面図、（Ｂ）はねじ蓋をわずかにねじ込んだ状態での縦断面図である。(A) is a longitudinal cross-sectional view in a state where the screw is cut off, and (B) is a vertical cross-sectional view in a state where the screw lid is slightly screwed. （Ａ）は本体の側面図、（Ｂ）は本体の正面図、（Ｃ）は図２（Ａ）の IVC-IVC視断面図である。(A) is a side view of the main body, (B) is a front view of the main body, and (C) is a sectional view taken along the line IVC-IVC in FIG. 図２（Ａ）の V-V視断面図である。FIG. 5 is a VV sectional view of FIG.

次に、本願発明の実施形態を図面に基づいて説明する。実施形態の注出装置１は、図１（Ａ）に示すように、上端部を屋根形の傾斜部２に形成した紙製容器３の上傾斜部２に取付けられる。なお、注出装置１は、傾斜部２を備えていない直方体状の紙製容器にも使用可能である。   Next, an embodiment of the present invention will be described with reference to the drawings. The pouring device 1 of the embodiment is attached to an upper inclined portion 2 of a paper container 3 having an upper end portion formed on a roof-shaped inclined portion 2 as shown in FIG. The pouring device 1 can also be used for a rectangular parallelepiped paper container that does not include the inclined portion 2.

図２に示すように、注出装置１は本体４とねじ蓋５とから成っている。いずれも、ポリエチレンのような比較的軟質の合成樹脂を素材として、射出成形法によって製造されている。   As shown in FIG. 2, the dispensing device 1 includes a main body 4 and a screw lid 5. Both are manufactured by injection molding using a relatively soft synthetic resin such as polyethylene as a raw material.

本体４は、紙製容器３に溶着されるリング状のベース板６と、ベース板６に一体に設けた円筒状の注出口７とを備えており、注出口７の内面のうちベース板６に近い下部には、円環状の薄肉部８を介して円形の閉止板９を一体に設け、閉止板９のうち薄肉部８の内周に近接した部位にタブ支柱１０を一体に設け、プル支柱１０の上端（先端）にプルタブの一例としてのプルリング１１を一体に設けている。薄肉部８は、閉止板９に下向きのＶ溝（スコアー）形成することによって設けている。   The main body 4 includes a ring-shaped base plate 6 welded to the paper container 3 and a cylindrical spout 7 provided integrally with the base plate 6. In the lower part, a circular closing plate 9 is integrally provided via an annular thin portion 8, and a tab support 10 is integrally provided in a portion of the closing plate 9 that is close to the inner periphery of the thin portion 8. A pull ring 11 as an example of a pull tab is integrally provided at the upper end (tip) of the column 10. The thin portion 8 is provided by forming a downward V groove (score) in the closing plate 9.

タブ支柱１０は、図２（Ｂ）に示すように、周方向に長い断面形状で内向きのリブ１０ａを有しており、図２（Ａ）等に示すように、半径方向の厚さは基端から上端に向けて小さくなっており、タブ支柱１０の上端部は尖ったような断面形状になっている。このため、プルリング１１に指先を掛けて引き起こすにおいて、タブ支柱１０の上端部が変形し易くて、プルリング１１の引き起こしを容易に行える利点がある。   As shown in FIG. 2B, the tab support 10 has an inward rib 10a with a long cross-sectional shape in the circumferential direction, and the thickness in the radial direction is as shown in FIG. It is smaller from the base end toward the upper end, and the upper end portion of the tab post 10 has a sharp cross-sectional shape. For this reason, there is an advantage that the pull ring 11 can be easily raised because the upper end portion of the tab support column 10 is easily deformed when the pull ring 11 is hooked and caused.

プルリング１１は、タブ支柱１０から遠ざかるに従って閉止板９からの高さが高くなるように緩く傾斜しており、かつ、その全週が、略半分程度の高さにおいて注出口７の外側にはみ出ている。このため、プルリング１１に指を掛けやすくなっている。また、プルリング１１の内周面のうちタブ支柱１０と反対側の部分には、指の引っ掛かりを良くため、周方向に延びるリブ１２が複数段（３段）形成されている。   The pull ring 11 is gently inclined so that the height from the closing plate 9 increases as the distance from the tab column 10 increases, and the whole week protrudes outside the spout 7 at about half the height. Yes. For this reason, it is easy to put a finger on the pull ring 11. Further, a plurality of ribs 12 (three steps) extending in the circumferential direction are formed on the inner peripheral surface of the pull ring 11 on the opposite side of the tab support 10 to improve finger catching.

さて、本体４の成形に際しては、樹脂の注入口（ゲート）は、金型のうち閉止板９の中心部に対応した箇所に設けており、このため、樹脂は、タブ支柱１０に対応した部分から二手に分かれて、冷えながらプルリング１１の成形用空所に流入し、二手に分かれた流れが合流してプルリング１１の先端部が形成される。このため、プルリング１１の先端部の強度が低くなるおそれがある。   Now, when molding the main body 4, a resin injection port (gate) is provided at a location corresponding to the central portion of the closing plate 9 in the mold, so that the resin is a portion corresponding to the tab support 10. , And then flows into the forming space of the pull ring 11 while cooling, and the flow divided into two hands joins to form the tip of the pull ring 11. For this reason, there exists a possibility that the intensity | strength of the front-end | tip part of the pull ring 11 may become low.

そこで、本実施形態では、図１（Ｂ）や図２（Ａ）、図３（Ａ）（Ｂ）に示すように、プルリング１１の先端部の外面に膨らみ部１３を設けて、先端部の断面積を大きくすることで千切れ防止を図っている。この場合、膨らみ部１３はプルリング１１の先端部の上下全高に亙って設けるのではなく、上部を少し残した状態で形成している。   Therefore, in this embodiment, as shown in FIG. 1B, FIG. 2A, FIG. 3A, and FIG. 3B, a bulging portion 13 is provided on the outer surface of the distal end portion of the pull ring 11, and The cross-sectional area is increased to prevent tearing. In this case, the bulging portion 13 is not provided over the entire vertical height of the front end portion of the pull ring 11, but is formed in a state where the upper portion is left a little.

注出口７の外周には雄ねじ１４を形成しているが、実施形態では、雄ねじ１４は３条ねじになっている。また、各雄ねじ１４は、周方向に沿った３か所において分断しており、分断部を符合１５で示している。分断部１５は、熱水シャワーによって内容物を殺菌した後の水の逃がしの役割と、本体４をいわゆる無理抜きで成形するに際しての型抜きの容易化との役割を持っている。   Although the external thread 14 is formed in the outer periphery of the spout 7, the external thread 14 is a triple thread in embodiment. Each male screw 14 is divided at three locations along the circumferential direction, and the divided portion is indicated by reference numeral 15. The dividing part 15 has a role of escaping water after the contents are sterilized by a hot water shower, and a role of facilitating die-cutting when the main body 4 is molded without so-called unreasonableness.

ねじ蓋５は、注出口７に外側から嵌まる筒部１６と、この筒部１６に一体に設けた天板１７とを備えており、筒部１６の内面には、本体４の雄ねじ１４に螺合する３条の雌ねじ（雌ねじ山）１８が形成されている。従って、内容物を注ぎ出すに際してのねじ蓋５と、再封止のためのねじ込みの回転角度を小さくできる。このため、消費者の手間を軽減できる。雌ねじ１８が雄ねじ１４に掛かり初めてからねじ蓋５がねじ込み切られるまでの度（すなわち、雄ねじ１４と雌ねじ１８との螺合回転角度）は、２７０度程度に設定している。   The screw lid 5 includes a cylindrical portion 16 that fits into the spout 7 from the outside, and a top plate 17 provided integrally with the cylindrical portion 16, and the inner surface of the cylindrical portion 16 is connected to the male screw 14 of the main body 4. Three female threads (female thread threads) 18 to be screwed are formed. Therefore, it is possible to reduce the rotation angle of the screw lid 5 for pouring the contents and the screwing for resealing. For this reason, a labor of a consumer can be reduced. The degree from when the female screw 18 is engaged with the male screw 14 until the screw lid 5 is screwed (that is, the screwing rotation angle between the male screw 14 and the female screw 18) is set to about 270 degrees.

ねじ蓋５の筒部１６のうち天板１７に繋がっている上端部は、上窄まりのテーパ部１６ａになっている。このため、注出装置１を紙製容器３にセットするに際して、紙製容器３に空けた取付け穴への挿入がスムースに行われる。   An upper end portion connected to the top plate 17 of the cylindrical portion 16 of the screw lid 5 is a tapered portion 16a with a narrowed top. For this reason, when the dispensing device 1 is set in the paper container 3, the insertion into the mounting hole formed in the paper container 3 is smoothly performed.

そして、筒部１６の外周面には、ねじ込み・ねじ戻しに際しての指の引っ掛かりを良くするため、多数の縦長凸条の群よりなるローレット部を形成しているが、ローレット部の上端をテーパ部１６ａの中程の高さに位置させている。ねじ蓋５をねじ込んだりねじ戻したりするに際しては、指先がテーパ部１６ａまで当たることが多いが、実施形態のようにローレット部の上端をテーパ部１６ａの中途高さまで位置させることにより、ねじ込み・ねじ戻しに際しての指の引っ掛かり性を良くすることができる。なお、テーパ部１６ａの全体にローレット部を形成してもよい。   The outer peripheral surface of the cylindrical portion 16 is formed with a knurled portion made up of a group of a number of vertically long ridges in order to improve finger catching during screwing and unscrewing. The upper end of the knurled portion is a tapered portion. It is located at the middle height of 16a. When the screw lid 5 is screwed in or unscrewed, the fingertip often hits the tapered portion 16a. However, as in the embodiment, the upper end of the knurled portion is positioned to the midway height of the tapered portion 16a. It is possible to improve the catching property of the finger when returning. In addition, you may form a knurled part in the whole taper part 16a.

天板１７の下面には、注出口７に内側から嵌合する筒状のインナーリング（中足）１９を下向きに突設している。そして、ねじ蓋５を注出口７に対して１７０度程度ねじ込むと、インナーリング１９の先端が注出口７の内部にきっちり嵌合するように設定している。インナーリング１９の先端部（下端部）の外周は、下窄まりのテーパ部１９ａになっている。   On the lower surface of the top plate 17, a cylindrical inner ring (middle leg) 19 that is fitted into the spout 7 from the inside is projected downward. Then, when the screw lid 5 is screwed into the spout 7 by about 170 degrees, the tip of the inner ring 19 is set so as to fit exactly inside the spout 7. The outer periphery of the front end portion (lower end portion) of the inner ring 19 is a tapered portion 19a that is narrowed down.

消費者がねじ蓋５をねじ込む場合、１回の回転操作で２００度程度は回転させ得ることが多いが、本実施形態では雄ねじ１４と雌ねじ１８とが３条ねじであることにより、ねじ蓋５を回転させ初めてからすぐに雌ねじ１８が雄ねじ１４に螺合し、しかも、螺合した状態で１７０度程度（ねじ込み終了前１００度程度）も回転させると、インナーリング１９が注出口７にきっちり嵌合するため、１回のみの回転であっても、シール状態を保持できる。このため、ねじ蓋５を十分にねじ込まない状態で紙製容器３を横向きに寝かせても、内容物が零れ出ることはない。   When the consumer screwes the screw lid 5, it can often be rotated about 200 degrees by one rotation operation. However, in this embodiment, the male screw 14 and the female screw 18 are three-threaded screws, and thus the screw lid 5. The inner ring 19 fits into the spout 7 when the female screw 18 is screwed into the male screw 14 as soon as it is rotated, and is further rotated about 170 degrees (about 100 degrees before screwing is completed) in the screwed state. Therefore, the sealing state can be maintained even with one rotation. For this reason, even if the paper container 3 is laid sideways in a state where the screw lid 5 is not screwed in sufficiently, the content does not spill out.

図３（Ａ）では、ねじ蓋５をねじ込み切った状態で、ねじ蓋５の下端とベース板６との間に若干の隙間を空けているが、ねじ込み切るとねじ蓋５がペース板６に当接する構成であってもよい。また、ねじ蓋５をねじ込み切った状態で、ねじ蓋５によってプルリング１１を押し曲げてもよい。この場合、既述のように、タブ支柱１０の上端部を薄肉にして容易に弾性変形しやすくしておくと、ねじ蓋５がタブ支柱１０の弾性反力によって押し戻される現象が軽減されるため、流通段階でのねじ蓋５の戻り作用を著しく抑制できる。   In FIG. 3 (A), a slight gap is left between the lower end of the screw lid 5 and the base plate 6 in a state in which the screw lid 5 is screwed. The structure which contact | abuts may be sufficient. Further, the pull ring 11 may be pushed and bent by the screw lid 5 in a state where the screw lid 5 is screwed. In this case, as described above, if the upper end portion of the tab support 10 is thin and easily elastically deformed, the phenomenon that the screw lid 5 is pushed back by the elastic reaction force of the tab support 10 is reduced. The return action of the screw cap 5 at the distribution stage can be remarkably suppressed.

本願発明は、実際に紙製容器用の注出装置に具体化できる。従って、産業上利用できる。   The present invention can actually be embodied in a paper container dispensing device. Therefore, it can be used industrially.

１ 注出装置
３ 紙製容器
４ 本体
５ ねじ蓋
６ ベース板
７ 注出口
８ 薄肉部
９ 閉止板
１１ プルリング
１４ 本体の雄ねじ
１６ ねじ蓋の筒部
１７ ねじ蓋の天板
１８ ねじ蓋の雌ねじ
１９ インナーリング DESCRIPTION OF SYMBOLS 1 Dispensing device 3 Paper container 4 Main body 5 Screw lid 6 Base plate 7 Outlet 8 Thin portion 9 Closing plate 11 Pull ring 14 Male screw of main body 16 Screw cap cylinder 17 Screw cap top plate 18 Screw cap female screw 19 Inner ring

Claims (3)

箱形の紙製容器に溶着される樹脂製の本体と、前記本体に着脱自在な樹脂製のねじ蓋とを備えており、
前記本体は、前記紙製容器の表面に重なるベース板と、前記ベース板に一体に設けた注出口と、ループ状の薄肉部を介して前記注出口の内部に一体に設けた閉止板と、前記閉止板のうち薄肉部に近接した部位に設けたプルタブとを備えており、前記注出口の外周に雄ねじが形成されている一方、
前記ねじ蓋は、前記注出口に外側から嵌まる筒部と、前記筒部に一体に設けた天板とを備えており、前記筒部の内面には前記雄ねじに螺合する雌ねじが形成されており、前記天板には、前記注出口の内面に嵌合して内容物の漏洩を阻止するシール用のインナーリングを設けている構成であって、
前記注出口の雄ねじとねじ蓋の雌ねじとは多条ねじであり、前記ねじ蓋は、前記雌ねじの始端が雄ねじに掛かり初めてから２００〜３００度程度の螺合回転角度でねじ込み切るように設定されており、かつ、前記螺合回転角度の半分を経過した後でねじ込み終了よりも８０度程度手前の段階において前記インナーリングが注出口に嵌合開始するように設定されている、
紙製容器用の注出装置。 A resin main body welded to a box-shaped paper container, and a resin screw lid detachably attached to the main body,
The main body has a base plate overlapping the surface of the paper container, a spout provided integrally with the base plate, a closing plate provided integrally inside the spout via a loop-shaped thin portion, A pull tab provided in a portion close to the thin portion of the closing plate, and a male screw is formed on the outer periphery of the spout,
The screw lid includes a cylindrical portion that fits into the spout from the outside, and a top plate that is provided integrally with the cylindrical portion, and an internal thread that is screwed to the male screw is formed on the inner surface of the cylindrical portion. The top plate is provided with an inner ring for sealing that fits into the inner surface of the spout and prevents leakage of contents,
The male screw of the spout and the female screw of the screw cap are multi-threaded screws, and the screw cap is set so that the starting end of the female screw is engaged with the male screw and screwed in at a screwing rotation angle of about 200 to 300 degrees from the beginning. And after the half of the screwing rotation angle has passed, the inner ring is set to start fitting into the spout at a stage about 80 degrees before the end of screwing.
A dispensing device for paper containers. 前記雄ねじと雌ねじとは３条ねじに形成されていて、前記螺合回転角度は２７０度程度に設定されており、かつ、ねじ込み終了前の１００程度の段階で前記インナーリングが注出口に嵌合開始するように設定されている、
請求項１に記載した紙製容器用の注出装置。 The male screw and the female screw are formed in a triple thread, the screwing rotation angle is set to about 270 degrees, and the inner ring is fitted to the spout at a stage of about 100 before the screwing is completed. Set to start,
The extraction device for paper containers according to claim 1. 前記プルタブは、人が指を挿入するプルリングを備えており、前記プルリングは、その全周にわたって前記注出口の外側にはみ出ている、
請求項１又は２に記載した紙製容器用の注出装置。 The pull tab includes a pull ring into which a person inserts a finger, and the pull ring protrudes outside the spout over the entire circumference.
The extraction device for paper containers according to claim 1 or 2.
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