JP2010173705A - Bung with pull ring - Google Patents

Bung with pull ring Download PDF

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JP2010173705A
JP2010173705A JP2009019418A JP2009019418A JP2010173705A JP 2010173705 A JP2010173705 A JP 2010173705A JP 2009019418 A JP2009019418 A JP 2009019418A JP 2009019418 A JP2009019418 A JP 2009019418A JP 2010173705 A JP2010173705 A JP 2010173705A
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pull ring
annular
cut portion
mold
ring
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JP5375136B2 (en
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Takashi Saito
剛史 齋藤
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Toppan Inc
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Toppan Printing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To make a melting resin difficult to dwell while easy to flow in both the directions of the mold of an upturned supporting post in a pull ring and the mold of horizontal annular incision (half-cut section), the melting resin being poured in from the center-gate section of a mold in the injection molding of a bung with a pull ring to be spread in a concentric fashion from the center of the mold of the bung for packing. <P>SOLUTION: The bung A with a pull ring is equipped with a blocking plate 5 sealing the bung within the interior of the annulus of a plinth section 2, an annular incision section 6 on the blocking plate 5 along the inner circumference of the plinth section, and a pull ring 8, located inside the annulus of the annular incision section, for opening the bung via the supporting post 7 erected on the upper surface of the blocking plate in the vicinity of the incision section. In this bung A, an annular thick-walled part 9 is provided, on the upper surface of the blocking plate 5, along the vicinity of the incision section within the interior of the annulus of the annular incision section. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、液体包装用の軟質包装容器や紙製包装容器などの液体注出用として超音波加熱シールなどにより溶着して使用するための口栓（スパウト）に関し、特にプルリング付き口栓に関する。   The present invention relates to a spout for use in liquid dispensing such as a soft packaging container for liquid packaging and a paper packaging container by welding with an ultrasonic heating seal or the like, and more particularly to a plug with a pull ring.

従来の液体注出用のプルリング付き口栓は、図５（ａ）に示すように、環状台座部２の下端外周に、フランジ１を備え、台座部２の上端に、外周に雄ネジ３ａを螺設した筒体３を立設して、台座部２の環内部４に、環内部４を封鎖した封鎖板５を設けた口栓Ａ’である。   As shown in FIG. 5 (a), a conventional mouthpiece with a pull ring for liquid pouring is provided with a flange 1 on the outer periphery of the lower end of the annular pedestal 2, and a male screw 3a on the outer periphery of the upper end of the pedestal 2. This is a spigot A ′ in which a screwed cylinder 3 is erected and a sealing plate 5 in which the inner ring 4 is sealed is provided in the inner ring 4 of the pedestal portion 2.

封鎖板５には、台座部２の環内周２ａに沿って、封鎖板５を台座部２から切除するための環状切込み部６（ハーフカット部）が設けられ、環状切込み部６の環内方であって、その切込み部６近傍の封鎖板５の上面には、筒体３の高さより低い高さに支柱７が立設され、支柱７を介して水平方向に口栓開封用のプルリング８が設けられている。   The sealing plate 5 is provided with an annular cut portion 6 (half cut portion) for cutting the sealing plate 5 from the pedestal portion 2 along the inner ring circumference 2 a of the pedestal portion 2. On the upper surface of the sealing plate 5 in the vicinity of the notch 6, a support column 7 is erected at a height lower than the height of the cylindrical body 3, and a pull ring for opening the plug in the horizontal direction via the support column 7. 8 is provided.

上記プルリング付き口栓Ａ’は、台座部２及び筒体３を液体包装用容器の容器壁から突出させ、フランジ１の下面若しくは上面を容器壁の外面若しくは内面に重ね合わせて、超音波加熱シールなどにより容器本体に溶着して使用される。図５（ｂ）はその口栓Ａ’の筒体３に蓋体Ｂを螺着した状態を示す。   The plug A ′ with pull ring is formed by projecting the pedestal 2 and the cylindrical body 3 from the container wall of the liquid packaging container, and superposing the lower surface or upper surface of the flange 1 on the outer surface or the inner surface of the container wall, and ultrasonic heating sealing Used by welding to the container body. FIG. 5B shows a state in which the lid B is screwed onto the cylindrical body 3 of the stopper A ′.

このようなプルリング付き口栓は、一般に、射出成形において、プラスチック溶融樹脂Ｒを金型内に射出し充填して成形される。図６（ａ）は、射出成形に使用される金型Ｃの一例であり、図６（ｂ）は、金型Ｃ内に射出した溶融樹脂Ｒの金型内における流れの状態（矢印）を示す概要図である。   Such a plug with a pull ring is generally molded by injecting and filling a plastic molten resin R into a mold in injection molding. 6A is an example of a mold C used for injection molding, and FIG. 6B shows a flow state (arrow) of the molten resin R injected into the mold C in the mold. FIG.

上記のような金型Ｃを用いたプルリング付き口栓の射出成形においては、溶融樹脂Ｒを金型Ｃのセンターゲート部Ｇ（金型上部又は下部のセンターゲート部Ｇ1 、Ｇ2 ）から注入して成形する際に、樹脂Ｒの流れは、金型の口栓Ａ’の中心より同心円状に拡がり充填されるが、プルリング８の支柱７があるため、環状の切込み部６（ハーフカット部）の型の方向には流れず、その途中より上向きに支柱７の型の方向に流動し易い。   In the injection molding of the plug with a pull ring using the mold C as described above, the molten resin R is injected from the center gate portion G (the upper or lower center gate portions G1, G2) of the mold C. At the time of molding, the flow of the resin R spreads concentrically from the center of the mold stopper A ′ and is filled. However, since the column 7 of the pull ring 8 is provided, the annular cut portion 6 (half cut portion) is formed. It does not flow in the direction of the mold, and it tends to flow upward in the middle of the mold in the direction of the mold of the support column 7.

この時に、樹脂Ｒはハーフカット部６の手前にて滞留され易く、樹脂Ｒが環状のハーフカット部６の型を越える時に、その流動タイミングがずれて、また、プルリング８の支柱７の付け根部分では、樹脂Ｒが冷却されて流動し難くなり、環状のハーフカット部６のうち、この部分のみ、他のハーフカット部６とスキン層（そのハーフカット部６の樹脂厚さ）との構成等に変化が生じて、環状のハーフカット部６に環状方向に不均一な厚さのスキン層が生じたり、使用時に支柱７やプルリング８が封鎖板５からちぎれたり、ハーフカット部６が白化したりするという問題がある。   At this time, the resin R tends to stay in front of the half-cut portion 6, and when the resin R exceeds the mold of the annular half-cut portion 6, the flow timing is shifted, and the base portion of the support 7 of the pull ring 8 is shifted. Then, the resin R is cooled and hardly flows, and only the portion of the annular half-cut portion 6 is configured with the other half-cut portion 6 and the skin layer (the resin thickness of the half-cut portion 6). Changes, a skin layer having a non-uniform thickness in the annular direction is formed in the annular half-cut portion 6, the support column 7 and the pull ring 8 are torn off from the sealing plate 5 during use, and the half-cut portion 6 is whitened. There is a problem that.

また、液体包装用の容器口栓に使用されるプルリンク付き口栓Ａ’は、そのプルリング８及び支柱７と封鎖板５とを肉薄の切込み部６（ハーフカット部）を介して切り取り、口栓Ａ’を開封した際には、そのプルリング８、支柱７、封鎖板５は、不要部分となる。そのため、省資源や省エネルギー対策としては、できる限り、プルリング８、支柱７、封鎖板５の成形のための使用樹脂量を減少させ、封鎖板５の肉厚も薄くすることが望まれるものであるが、このような対策を講じるためには、上記のような問題がより顕著になる。   Further, the plug A ′ with a pull link used for a container plug for liquid packaging is formed by cutting the pull ring 8, the support column 7 and the sealing plate 5 through a thin cut portion 6 (half cut portion). When the stopper A ′ is opened, the pull ring 8, the column 7 and the sealing plate 5 become unnecessary portions. Therefore, as a resource saving and energy saving measure, it is desirable to reduce the amount of resin used for forming the pull ring 8, the column 7 and the sealing plate 5 as much as possible and to reduce the thickness of the sealing plate 5 as much as possible. However, in order to take such measures, the above problems become more prominent.

特開２００４−９９１４１号公報JP 2004-99141 A

本発明の課題は、プルリング付き口栓の射出成形において、金型のセンターゲート部から注入され金型の口栓の中心より同心円状に拡がり充填される溶融樹脂を、滞留し難くするとともに、プルリングにおける上向きの支柱の型の方向と、水平方向の環状の切込み部（ハーフカット部）の型の両方向に、流動し易くすることにより、環状切込み部に環状方向に均一な厚さのスキン層が得られるようにし、また、口栓の開封使用時に支柱やプルリングが封鎖板からちぎれたり、切込み部が白化したりする現象を解消することにある。   An object of the present invention is to make it difficult to retain a molten resin that is injected from a center gate portion of a mold and spreads concentrically from the center of the mold stopper in injection molding of a stopper with a pull ring. The skin layer with a uniform thickness in the annular direction is formed in the annular cut portion by facilitating the flow in both the direction of the mold of the upward support column and the horizontal annular cut portion (half cut portion) of the die. Further, it is intended to eliminate the phenomenon that the support column and the pull ring are torn off from the sealing plate and the cut portion is whitened when the plug is opened.

本発明の請求項１に係る発明は、下端外周にフランジ１を設けた環状台座部２の上端に外周に雄ネジ２ａを螺設した筒体を立設した口栓であって、台座部２の環内部４に口栓Ａを封鎖した封鎖板５を設け、封鎖板５に台座部２の環内周２ａに沿って環状切込み部６を設け、環状切込み部６の環内方であってその切込み部６近傍の封鎖板５の上面に立設した支柱７を介して口栓開封用のプルリング８を設けたプルリング付き口栓Ａにおいて、封鎖板５の上面に、環状切込み部６の環内方の切込み部６近傍に沿って環状に肉厚部９を設けたことを特徴とするプルリング付き口栓である。   The invention according to claim 1 of the present invention is a spigot in which a cylindrical body in which a male screw 2a is screwed on the outer periphery is provided on the upper end of an annular pedestal portion 2 having a flange 1 on the outer periphery of the lower end. A sealing plate 5 in which the stopper A is sealed is provided in the inner ring 4, and an annular notch 6 is provided on the sealing plate 5 along the inner circumference 2 a of the base portion 2. In the plug A with a pull ring in which a pull ring 8 for opening the plug is provided via a support column 7 erected on the upper surface of the sealing plate 5 near the cut portion 6, the ring of the annular cut portion 6 is formed on the upper surface of the sealing plate 5. A plug with a pull ring, characterized in that a thick portion 9 is provided in an annular shape along the vicinity of the inner cut portion 6.

本発明の請求項２に係る発明は、上記請求項１に係るプルリング付き口栓Ａにおいて、肉厚部９が、環状切込み部６の環内方の切込み部６近傍に沿って、連続環状又は断続環状に設けられていることを特徴とするプルリング付き口栓である。   In the invention according to claim 2 of the present invention, in the plug A with a pull ring according to claim 1, the thick portion 9 is formed in a continuous annular shape along the vicinity of the incision portion 6 inside the ring incision portion 6. It is a plug with a pull ring characterized by being provided in an intermittent ring.

本発明の請求項３に係る発明は、上記請求項１又は２に係るプルリング付き口栓Ａにおいて、封鎖板５の上面に、肉厚部９と繋がる肉厚部１０を放射状に設けたことを特徴とするプルリング付き口栓である。   The invention according to claim 3 of the present invention is that, in the plug A with pull ring according to claim 1 or 2, the thick portion 10 connected to the thick portion 9 is radially provided on the upper surface of the blocking plate 5. This is a plug with a pull ring.

本発明のプルリング付き口栓によれば、封鎖板の上面に、環状切込み部の環内方の切込み部近傍に沿って環状（円周状）に、切込み部の内側に支柱の付け根を含め、肉厚部（リブ）を設けることにより、射出成形時の溶融樹脂は、環状（円周状）の肉厚部（リブ）を設けることにより、射出成形時には、溶融樹脂は、プルリングにおける上向きの支柱の型の方向と、水平方向の環状の切込み部（ハーフカット部）の型の両方向に、流動し易くなる。   According to the plug with a pull ring of the present invention, on the upper surface of the sealing plate, annularly (circumferentially) along the vicinity of the incision portion inside the annular incision portion, including the base of the strut inside the incision portion, By providing the thick part (rib), the molten resin at the time of injection molding is provided with an annular (circumferential) thick part (rib). It becomes easy to flow in both directions of the mold of the mold and the mold of the annular cut portion (half cut section) in the horizontal direction.

さらに、溶融樹脂は、支柱を通り、プルリングまで流動して充填が完了した後に、切込み部を越えて流動するようになり、充填バランスが良好になり、成形されたプルリング付き口栓の環状切込み部に、環状方向に均一な厚さのスキン層が得られるようになり、また口栓の開封使用時に、支柱やプルリングが封鎖板からちぎれたり、切込み部が白化したりする現象を解消することができる。   Furthermore, after the molten resin flows through the column to the pull ring and has been filled, the molten resin begins to flow beyond the cut portion, the filling balance is improved, and the annular cut portion of the molded plug with the pull ring is formed. In addition, a skin layer with a uniform thickness in the annular direction can be obtained, and the phenomenon that the struts and pull rings are torn off from the sealing plate and the cut portion is whitened when the plug is opened is used. it can.

また、本発明のプルリング付き口栓によれば、封鎖板の上面に、環状切込み部の環内方の切込み部近傍に沿って環状（円周状）に、切込み部の内側に支柱の付け根を含め、肉厚部（リブ）を設け、さらに、封鎖板の上面に、肉厚部（リブ）に繋がる肉厚部（リブ）を放射状に設けることにより、射出成形時の溶融樹脂は、射出成形時には、プルリングにおける上向きの支柱の型の方向と、水平方向の環状の切込み部（ハーフカット部）の型の両方向に流動し易くなる。   Further, according to the plug with a pull ring of the present invention, the base of the column is formed on the upper surface of the sealing plate in a ring shape (circumferential shape) along the vicinity of the cut portion inside the ring cut portion, and on the inner side of the cut portion. In addition, by providing thick parts (ribs) and radially providing thick parts (ribs) connected to the thick parts (ribs) on the upper surface of the sealing plate, the molten resin at the time of injection molding is injection molded. Sometimes, it tends to flow in both directions of the mold of the upward support column in the pull ring and the mold of the horizontal annular cut portion (half cut portion).

さらに、溶融樹脂は、支柱を通り、プルリングまで流動して充填が完了した後に、切込み部を越えて流動するようになり、充填バランスが良好になり、成形されたプルリング付き口栓の環状切込み部に環状方向に均一な厚さのスキン層が得られるようになり、また、口栓の開封使用時に、支柱やプルリングが封鎖板からちぎれたり、切込み部が白化したりする現象を解消することができる。   Furthermore, after the molten resin flows through the column to the pull ring and has been filled, the molten resin begins to flow beyond the cut portion, the filling balance is improved, and the annular cut portion of the molded plug with the pull ring is formed. In addition, a skin layer with a uniform thickness in the annular direction can be obtained, and the phenomenon that the struts and pull rings are torn off from the sealing plate and the cut portion is whitened when the plug is opened is used. it can.

本発明のプルリング付き口栓の構造を説明する全体側断面図。The whole sectional side view explaining the structure of the stopper with a pull ring of this invention. 本発明のプルリング付き口栓を施蓋した状態を説明する全体側断面図。The whole sectional side view explaining the state which applied the mouthpiece with a pull ring of the present invention. （ａ）は、本発明のプルリング付き口栓の構造の一例を説明する上面図、（ｂ）は、他の例を説明する上面図。(A) is a top view explaining an example of the structure of the plug with a pull ring of this invention, (b) is a top view explaining another example. （ａ）は、本発明のプルリング付き口栓を射出成形するための金型の一例を説明する側断面図、（ｂ）は、その金型内に射出充填された溶融樹脂の流れ状態を説明する概要側断面図。(A) is a sectional side view for explaining an example of a mold for injection-molding the plug with pull ring of the present invention, and (b) explains the flow state of the molten resin injected and filled in the mold. FIG. （ａ）〜（ｂ）は、従来のプルリング付き口栓の構造を説明する全体側断面図。(A)-(b) is a whole sectional side view explaining the structure of the conventional stopper with a pull ring. （ａ）は、従来の構造のプルリング付き口栓を射出成形するための金型の一例を説明する側断面図、（ｂ）は、その金型内に射出充填された溶融樹脂の流れ状態を説明する概要側断面図。(A) is a side sectional view for explaining an example of a mold for injection molding a stopper with a pull ring having a conventional structure, and (b) shows a flow state of molten resin injected and filled in the mold. Outline side sectional view to explain.

本発明のプルリング付き口栓の構造を、図１、図２の側断面図に基づいて以下に詳細に説明すれば、口栓Ａは、環状台座部２を備え、その台座部２下端の外周にフランジ２を備え、台座部の上端には、その外周に雄ネジ３ａを螺設した筒体３を立設したものである。台座部２の環内部には、台座部２内（口栓Ａ）を封鎖した封鎖板５が設けられている。   The structure of the plug with a pull ring according to the present invention will be described below in detail with reference to the side sectional views of FIGS. 1 and 2. The plug A includes an annular pedestal portion 2 and an outer periphery of the lower end of the pedestal portion 2. A cylindrical body 3 having a male screw 3a on the outer periphery thereof is provided upright at the upper end of the pedestal portion. Inside the ring of the pedestal 2, a blocking plate 5 that seals the inside of the pedestal 2 (plug A) is provided.

封鎖板５には、台座部２の環内周に沿って環状の切込み部６が設けられ、環状切込み部６の環内方であって、その切込み部６近傍の封鎖板５の上面に支柱７が立設されていて、支柱７の上端には口栓開封用のプルリング８が設けられている。図１中、Ｌは環状の切込み部６（ハーフカット部）における環状のカッティングラインを示す。   The sealing plate 5 is provided with an annular cut portion 6 along the inner circumference of the pedestal portion 2, inside the ring of the annular cut portion 6 and on the upper surface of the sealing plate 5 in the vicinity of the cut portion 6. 7 is erected, and a pull ring 8 for opening the plug is provided at the upper end of the column 7. In FIG. 1, L indicates an annular cutting line at the annular cut portion 6 (half cut portion).

そして本発明においては、封鎖板５の上面に、環状の切込み部６より環内方であって、切込み部６近傍に沿って環状（円周状）に肉厚部９（リブ）が設けられている。   In the present invention, a thick portion 9 (rib) is provided on the upper surface of the sealing plate 5 in an annular (circumferential) shape in the ring inner side from the annular cut portion 6 and along the vicinity of the cut portion 6. ing.

また、本発明のプルリング付き口栓においては、肉厚部９が、環状の切込み部６の環内方の切込み部６近傍に沿って、図３（ａ）の平面図に示すように連続した環状（円周状）に設けられていてもよいし、あるいは、断続的な（図示せず）環状（円周状）に設けられていてもよい。   Moreover, in the plug with a pull ring of the present invention, the thick portion 9 is continuous along the vicinity of the annular incision 6 of the annular incision 6 as shown in the plan view of FIG. It may be provided in an annular shape (circumferential shape), or may be provided in an intermittent (not shown) annular shape (circumferential shape).

また、本発明のプルリング付き口栓においては、図３（ｂ）の平面図に示すように封鎖板５の上面には、肉厚部９と繋がる肉厚部１０を、放射状に設けることができる。   Moreover, in the plug with a pull ring of this invention, as shown in the top view of FIG.3 (b), on the upper surface of the sealing board 5, the thick part 10 connected with the thick part 9 can be provided radially. .

図４（ａ）は、本発明のプルリング付き口栓を備えるプルリング付き口栓を射出成形するための金型Ｃの一例を示す側断面図であり、（ｂ）は、その金型Ｃ内に射出した溶融樹
脂Ｒの金型内における流れの状態（矢印）を示す概要図である。 FIG. 4A is a side sectional view showing an example of a mold C for injection molding a plug with a pull ring provided with the plug with a pull ring of the present invention, and FIG. It is a schematic diagram which shows the state (arrow) of the flow in the metal mold | die of the injected molten resin R. FIG.

本発明のプルリング付き口栓の射出成形について説明すれば、まず、図４（ａ）に示す金型Ｃの上部センターゲートＧ1 （又は下部せんたーゲートＧ2 ）から、溶融樹脂Ｒを射出して、金型Ｃ内に充填する。   The injection molding of the plug with a pull ring according to the present invention will be described. First, the molten resin R is injected from the upper center gate G1 (or the lower center gate G2) of the mold C shown in FIG. Fill in the mold C.

金型Ｃ内に射出充填された溶融樹脂Ｒは、図４（ｂ）に示すように、センターゲートＧ1 （又はＧ2 ）から、封鎖板５の金型内に流動して、同心円状に環状の切込み部６の型の方向に拡がり充填されるとともに封鎖板５上面の肉厚部９の型の方向に流動する。また、封鎖板５上面の肉厚部９と繋がる放射状の肉厚部１０の型の方向に流動する。これにより、溶融樹脂Ｒは、プルリングにおける上向きの支柱７の型の方向と、水平方向の環状の切込み部６（ハーフカット部）の型の両方向に、容易に流動し易くなる。   The molten resin R injected and filled in the mold C flows from the center gate G1 (or G2) into the mold of the sealing plate 5 as shown in FIG. The cut portion 6 is spread and filled in the mold direction and flows in the mold direction of the thick portion 9 on the upper surface of the sealing plate 5. Moreover, it flows in the direction of the mold of the radial thick portion 10 connected to the thick portion 9 on the upper surface of the blocking plate 5. As a result, the molten resin R easily flows in both directions of the mold of the upward support column 7 in the pull ring and the mold of the horizontal annular cut portion 6 (half cut portion).

また、溶融樹脂Ｒは、支柱７を通りプルリング８まで流動して充填が完了した後に、切込み部６を越えて水平方向に流動するようになり、充填バランスが良好になり、成形されたプルリング付き口栓の環状切込み部に、環状方向に均一な厚さのスキン層が得られるようになる。また口栓の開封使用時の支柱やプルリングが封鎖板からちぎれたり、切込み部が白化したりする現象を解消する。   Also, the molten resin R flows through the support column 7 to the pull ring 8 and after filling is completed, the molten resin R flows in the horizontal direction beyond the cut portion 6, and the filling balance is improved and the molded pull ring is attached. A skin layer having a uniform thickness in the annular direction can be obtained at the annular cut portion of the plug. In addition, it eliminates the phenomenon that the struts and pull rings when the plug is opened are torn off from the sealing plate, and the cut portion is whitened.

Ａ…プルリング付き口栓
Ａ’…従来のプルリング付き口栓
Ｂ…蓋体
Ｃ…金型
１…フランジ
２…環状台座部
３…筒体
４…環状台座部の環内面
５…封鎖板
６…切込み部（ハーフカット部）
７…支柱
８…プルリング
９…環状肉厚部（リブ）
１０…放射状肉厚部（リブ） A ... Mouth plug with a pull ring A '... Conventional plug with a pull ring B ... Lid C ... Mold 1 ... Flange 2 ... Annular base part 3 ... Cylindrical body 4 ... Ring inner surface 5 of the annular base part ... Sealing plate 6 ... Cut Part (half cut part)
7 ... post 8 ... pull ring 9 ... annular thick part (rib)
10 ... Radial thick part (rib)

Claims (3)

下端外周にフランジを設けた環状台座部の上端に、外周に雄ネジを螺設した筒体を立設した口栓であって、前記台座部の環内部に口栓を封鎖した封鎖板を設け、該封鎖板に台座部の環内周に沿って環状切込み部を設け、該環状切込み部の環内方であってその切込み部近傍の前記封鎖板の上面に立設した支柱を介して口栓開封用のプルリングを設けたプルリング付き口栓において、前記封鎖板の上面に、環状切込み部の環内方の該切込み部近傍に沿って環状に肉厚部を設けたことを特徴とするプルリング付き口栓。   A stopper with a cylindrical body with a male screw threaded on the outer periphery is provided at the upper end of the annular pedestal part having a flange on the outer periphery of the lower end, and a sealing plate that seals the stopper is provided inside the ring of the pedestal part. The sealing plate is provided with an annular cut portion along the inner circumference of the pedestal portion, and is inserted into the ring inward of the annular cut portion through a support column erected on the upper surface of the sealing plate in the vicinity of the cut portion. A pull ring having a pull ring provided with a pull ring for opening a plug, wherein a pulling ring is provided on the upper surface of the sealing plate, and a thick wall portion is provided annularly along the vicinity of the cut portion inside the ring cut portion. With a spigot. 前記肉厚部が、環状切込み部の環内方の該切込み部近傍に沿って、連続環状又は断続環状に設けたことを特徴とする請求項１記載のプルリング付き口栓。   2. The plug with a pull ring according to claim 1, wherein the thick portion is provided in a continuous ring shape or an intermittent ring shape along the vicinity of the cut portion inside the ring of the annular cut portion. 前記封鎖板の上面に、前記肉厚部と繋がる肉厚部を放射状に設けたことを特徴とする請求項１又は２記載のプルリング付き口栓。   The plug with a pull ring according to claim 1 or 2, wherein a thick portion connected to the thick portion is provided radially on an upper surface of the sealing plate.
JP2009019418A 2009-01-30 2009-01-30 Molding method of plug with pull ring Expired - Fee Related JP5375136B2 (en)

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EP4159402A1 (en) * 2021-09-30 2023-04-05 Tetra Laval Holdings & Finance S.A. Opening device for a package, mold for molding an opening device for a package and package having an opening device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO2955122T3 (en) * 2014-06-10 2018-08-18

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JPS6337568U (en) * 1986-08-28 1988-03-10
JPH11222253A (en) * 1998-02-05 1999-08-17 Mikasa Sangyo Kk Separately heat-resistant hinge cap recoverable
JP2001240104A (en) * 2000-02-29 2001-09-04 Toppan Printing Co Ltd Mouth plug of paper container for liquid
JP2004067101A (en) * 2002-08-01 2004-03-04 Toppan Printing Co Ltd Cap with pull-ring

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JPS62134842U (en) * 1986-02-19 1987-08-25
JPS6337568U (en) * 1986-08-28 1988-03-10
JPH11222253A (en) * 1998-02-05 1999-08-17 Mikasa Sangyo Kk Separately heat-resistant hinge cap recoverable
JP2001240104A (en) * 2000-02-29 2001-09-04 Toppan Printing Co Ltd Mouth plug of paper container for liquid
JP2004067101A (en) * 2002-08-01 2004-03-04 Toppan Printing Co Ltd Cap with pull-ring

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4159402A1 (en) * 2021-09-30 2023-04-05 Tetra Laval Holdings & Finance S.A. Opening device for a package, mold for molding an opening device for a package and package having an opening device
WO2023052182A1 (en) * 2021-09-30 2023-04-06 Tetra Laval Holdings & Finance S.A. Opening device for a package, mold for molding an opening device for a package and package having an opening device

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