JP2019089564A - Synthetic resin container lid - Google Patents
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Abstract
Description
本発明は、容器の口頸部を開封した後においても、特に強制的な操作を加えることがない限り、容器蓋の全体が容器から分離されることがない型のタンパーエビデント特性を備えた合成樹脂製容器蓋、更に詳しくは天面壁及びこの天面壁の周縁から垂下する筒状スカート壁を有する本体と周方向に間隔を置いて配設された複数個の破断可能橋絡部を介して本体に接続されたタンパーエビデント裾部とを含み、橋絡部が破断されて本体が容器の口頸部から離脱されても、容器の口頸部に装着され続けるタンパーエビデント裾部に非破断接続片を介して本体が接続され続ける型の合成樹脂製容器蓋に関する。 The present invention has the property of tamper-evidence of a type in which the entire container lid is not separated from the container even after opening the mouth and neck of the container unless there is a particularly forced operation. A synthetic resin container lid, more specifically, a top wall and a main body having a cylindrical skirt wall depending from the periphery of the top wall, and a plurality of breakable bridge portions circumferentially spaced apart The tamper-evidence skirt continues to be attached to the mouth-neck of the container, even if the bridge is broken and the body is detached from the mouth-neck of the container, including the tamper-evidence skirt connected to the body. The present invention relates to a synthetic resin container lid of a type in which a main body continues to be connected via a broken connection piece.
口頸部の外周面には雄螺条及びこの雄螺条の下方に位置する係止あご部が形成されている容器に適用される、タンパーエビデント特性を備えた合成樹脂製容器蓋として、下記特許文献１及び２には、容器の口頸部を開封した後においても、特に強制的な操作を加えることがない限り、容器蓋の全体が容器から分離されることがない型の容器蓋が開示されている。かかる容器蓋は、天面壁及びこの天面壁の周縁から垂下する筒状スカート壁を有する本体と、周方向に間隔をおいて配設された複数個の破断可能橋絡部を介して本体のスカート壁に接続された筒状タンパーエビデント裾部とを含んでいる。スカート壁の内周面には容器の口頸部の雄螺条に螺合される雌螺条が形成されている。本体のスカート壁には下方に突出する突出片が配設されており、この突出片の周方向両側には、本体のスカート壁とタンパーエビデント裾部とを接続する非破断接続片が配設されている。上方から見て突出片よりも時計方向側に位置する片側非破断接続片は、タンパーエビデント裾部に接続された基端から突出片に向かって延在し且つタンパーエビデント裾部に対して本体が上方に移動されると反時計方向に傾動される反時計方向傾動部を含み、上方から見て突出片よりも反時計方向側に位置する他側非破断接続片は、タンパーエビデント裾部に接続された基端から突出片に向かって延在し且つ該タンパーエビデント裾部に対して本体が上方に移動されると時計方向に傾動される時計方向傾動部を含んでいる。 As a container lid made of synthetic resin having tamper-evident characteristics, which is applied to a container in which an external thread and a locking jaw located below the external thread are formed on the outer peripheral surface of the neck and neck portion, In the following Patent Documents 1 and 2, even after opening the mouth and neck of the container, a container lid of a type in which the entire container lid is not separated from the container unless a forced operation is particularly applied. Is disclosed. Such a container lid has a top wall and a main body having a cylindrical skirt wall depending from the periphery of the top wall, and a skirt of the main body via a plurality of breakable bridge portions disposed at intervals in the circumferential direction. And a tubular tamper evident foot connected to the wall. On the inner circumferential surface of the skirt wall is formed an internal thread to be engaged with the external thread on the neck of the container. Downwardly protruding projecting pieces are disposed on the skirt wall of the main body, and non-breaking connecting pieces connecting the skirt wall of the main body and the tamper-evidence skirt are disposed on both sides in the circumferential direction of the projecting piece It is done. The one-side non-breaking connection piece located clockwise from above the projection piece as viewed from above extends from the proximal end connected to the tamper evident foot towards the projection piece and against the tamper evident foot The other non-breaking connection piece including a counterclockwise tilting part which is tilted counterclockwise when the main body is moved upward, and which is located on the counterclockwise side with respect to the projecting piece when viewed from above has a tamper-evidence hem And a clockwise tilting portion extending from the proximal end connected to the portion toward the projecting piece and being tilted clockwise when the main body is moved upward with respect to the tamper evident foot.
上述した型の容器蓋は、容器の口頸部を開封した後に本体を片手で持つことなく喫飲することを可能にし、そしてまた本体の落下及び紛失を防止するために、容器の口頸部を一旦開封した後においても、本体が非破断接続片を介してタンパーエビデント裾部に接続された状態を維持して、容器内容物の消費或いは本体による口頸部の仮閉鎖及び再開封を遂行することを意図したものである。しかしながら、本発明者等の経験によれば、通常の容器蓋においては口頸部から離脱された本体はタンパーエビデント裾部から完全に分離されることから、上述した型の容器蓋であるにも拘わらず、稀ではあるが消費者が勘違いして或いは意図的に口頸部から離脱された本体に過剰な力を加えて非破断接続片を破断し、タンパーエビデント裾部から本体を完全に分離してしまうことがある。そして、かような事態が発生すると、破断された非破断接続片の一部は本体と共にタンパーエビデント裾部から分離されるが、破断された非破断接続片の残部はタンパーエビデント裾部の上縁から延出した状態でタンパーエビデント裾部に残留する。かような状態で消費者が内容物の消費のために容器の口頸部に唇を当接すると、タンパーエビデント裾部に残留している非破断接続片の残部が消費者の唇に刺さり、消費者が不快感を覚え或いは唇を損傷してしまう虞がる。 The container lid of the type described above makes it possible to drink without holding the body with one hand after opening the mouth and neck of the container, and also to prevent the fall and loss of the body, the mouth and neck of the container Even after opening the container, the main body is kept connected to the tamper evident foot through the non-breaking connection piece to consume the contents of the container or temporarily close and re-open the neck and neck by the main body. It is intended to be carried out. However, according to the experience of the present inventors, in the usual container lid, since the main body detached from the mouth and neck is completely separated from the tamper-evidence skirt, it is the container lid of the type described above. Nevertheless, it is rare, but the consumer misunderstood or intentionally exerts excessive force on the body that has been released from the mouth and neck to break the non-rupturing connection piece, and complete the body completely from the tamper evident foot May be separated. Then, when such a situation occurs, a part of the broken non-ruptured connection piece is separated from the tamper evident foot with the main body, but the remaining part of the broken non-broken connection piece is the tamper evidence foot Remains at the edge of the tamper-edent while extending from the upper edge. When the consumer abuts the lip on the mouth and neck of the container for consumption of the contents in such a state, the remainder of the non-rupturing connection piece remaining at the tail of the tamper edent bites the consumer's lip Consumers may feel uncomfortable or may damage their lips.
本発明は、上記事実に鑑みてなされたものであり、その主たる技術的課題は、口頸部から離脱された本体に過剰な力が加えられ非破断接続片が破断されてしまっても、タンパーエビデント裾部に残留している非破断接続片の残部に起因して消費者が不快感を覚え或いは唇を損傷してしまうことが可及的に回避される、新規且つ改良された合成樹脂容器蓋を提供することである。 The present invention has been made in view of the above-mentioned facts, and the main technical problem is that even if an excessive force is applied to the body released from the mouth and neck and the non-breaking connection piece is broken, A new and improved synthetic resin which avoids as much as possible for the consumer to feel uncomfortable or to damage the lips due to the remainder of the non-ruptured connection piece remaining in the evident foot It is providing a container lid.
本発明者等は、鋭意検討及び実験の結果、非破断接続片におけるタンパーエビデント裾部に接続されている基端近傍に誘導強制破断領域を配設することによって、上記主たる技術的課題を解決することができることを見出した。 The present inventors solved the above-mentioned main technical problems by arranging the induction forcible fracture region in the vicinity of the base end connected to the tamper evident foot of the non-ruptured connection piece as a result of earnest studies and experiments. I found that I could do it.
即ち、本発明によれば、上記主たる技術的課題を解決する合成樹脂製容器蓋として、
口頸部の外周面には雄螺条及び該雄螺条の下方に位置する係止あご部が形成されている容器に適用される合成樹脂製容器蓋であって、
天面壁及び該天面壁の周縁から垂下する筒状スカート壁を有し、該スカート壁の内周面には該雄螺条に螺合される雌螺条が形成されている本体と、周方向に間隔をおいて配設された複数個の破断可能橋絡部を介して該本体の該スカート壁に接続され、内周面には該係止あご部に係止される係止手段が配設されている筒状タンパーエビデント裾部とを含み、
該本体の該スカート壁には下方に突出する突出片が配設されており、該突出片の周方向両側には、該本体の該スカート壁と該タンパーエビデント裾部とを接続する非破断接続片が配設されており、
上方から見て該突出片よりも時計方向側に位置する片側非破断接続片は、該タンパーエビデント裾部に接続された基端から該突出片に向かって延在し且つ該タンパーエビデント裾部に対して該本体が上方に移動されると正面から見て反時計方向に傾動される反時計方向傾動部を含み、
上方から見て該突出片よりも反時計方向側に位置する他側非破断接続片は、該タンパーエビデント裾部に接続された基端から該突出片に向かって延在し且つ該タンパーエビデント裾部に対して該本体が上方に移動されると正面から見て時計方向に傾動される時計方向傾動部を含む、
合成樹脂製容器蓋において、
該片側非破断接続片の該反時計方向傾動部の該基端近傍及び該他側非破断接続片の該時計方向傾動部の該基端近傍には誘導強制破断領域が配設されている、
ことを特徴とする合成樹脂製容器蓋が提供される。
That is, according to the present invention, as a container lid made of synthetic resin which solves the above-mentioned main technical problems,
It is a synthetic resin container lid applied to a container in which a male screw thread and a locking jaw portion located below the male screw thread are formed on the outer peripheral surface of the mouth and neck portion,
A top surface wall and a cylindrical skirt wall depending from the peripheral edge of the top surface wall, the inner circumferential surface of the skirt wall is formed with a main body on which an internal thread to be screwed with the external thread is formed; A plurality of breakable bridges disposed at intervals to connect to the skirt wall of the main body, and an inner peripheral surface is provided with a locking means to be locked to the locking jaws Including a cylindrical tamper-evidence skirt portion provided,
Downwardly projecting protrusions are disposed on the skirt wall of the main body, and non-breakage connecting the skirt wall of the main body and the tamper-evidence skirt is provided on both sides in the circumferential direction of the projecting pieces. Connection pieces are provided,
The one-side non-breaking connection piece positioned clockwise from above the projecting piece as viewed from above extends from the proximal end connected to the tamper-evident foot toward the projecting piece and the tamper-evidence hem Includes a counterclockwise tilting portion which is tilted counterclockwise as viewed from the front as the body is moved upward with respect to the portion;
The other non-breaking connection piece positioned counterclockwise as viewed from above the projection piece extends from the proximal end connected to the tamper evident foot toward the projection piece and the tamper shrimp Including a clockwise tilting portion which is tilted clockwise as viewed from the front when the main body is moved upward with respect to the dent skirt
In the plastic container lid,
An induced forcible fracture region is disposed in the vicinity of the proximal end of the counterclockwise tilting portion of the one-side non-breaking connection piece and in the vicinity of the proximal end of the clockwise tilting portion of the other non-breaking connection piece.
A container lid made of synthetic resin is provided.
好ましくは、該誘導強制破断領域は該基端近傍において該反時計方向傾動部及び該時計方向傾動部に切欠を形成することによって配設されている。該切欠は該反時計方向傾動部の上縁及び該時計方向傾動部の上縁から下方に延びるのが好適である。該反時計方向傾動部における該切欠の、上方から見て時計方向側の上端縁部は円滑に延びる凸弧状であり、該時計方向傾動部における該切欠の、上方から見て反時計方向側の上端縁部は円滑に延びる凸弧状であるのが望ましい。該片側非破断接続片の該誘導強制破断領域の断面積及び該他側非破断接続片の該誘導強制破断領域の断面積は０．５乃至０．６ｍｍ２であるのが好ましい。該片側非破断接続片は、該スカート壁に接続された基端から該突出片に向かって該反時計方向傾動部の上方を延在し且つ該タンパーエビデント裾部に対して該本体が上方に移動されると時計方向に傾動される時計方向傾動部を含み、該他側非破断接続片は、該スカート壁に接続された基端から該突出片に向かって該時計方向傾動部の上方を延在し且つ該タンパーエビデント裾部に対して該本体が上方に移動されると反時計方向に傾動される反時計方向傾動部を含むのが好都合である。 Preferably, the induced forcible fracture region is disposed by forming a notch in the counterclockwise tilt portion and the clockwise tilt portion near the proximal end. Preferably the notch extends downwardly from the upper edge of the counterclockwise tilt and the upper edge of the clockwise tilt. The upper end edge of the notch in the counterclockwise tilt part, viewed from above, in the clockwise direction is a convex arc extending smoothly, and the notch in the clockwise tilt part is counterclockwise as viewed from above The upper edge is preferably in the form of a smoothly extending convex arc. The cross-sectional area of the inductive forcible fracture region of the one-sided non-fractured connection piece and the cross-sectional area of the inductive forcible fracture region of the other non-fractured connection piece are preferably 0.5 to 0.6 mm 2 . The one-sided non-rupturing connection piece extends above the counterclockwise tilting portion from the proximal end connected to the skirt wall toward the projecting piece and the main body is upward with respect to the tamper-evident skirt And the other side non-breaking connecting piece is directed from the proximal end connected to the skirt wall toward the projecting piece above the clockwise tilting part. It is advantageous to include a counterclockwise tilting portion which extends in the counterclockwise direction when the main body is moved upward with respect to the tamper evident foot.
本発明の合成樹脂容器蓋においては、口頸部から離脱された本体に過剰な力が加えられた場合、片側非破断接続片及び他側非破断接続片は、夫々、基端近傍に配設された誘導強制破断領域において強制的に破断される。従って、タンパーエビデント裾部に残留する片側非破断接続片及び他側非破断接続片の残部は充分に小さく、タンパーエビデント裾部に残留した片側非破断接続片及び他側非破断接続片の残部によって消費者が不快感を覚え或いは唇を損傷してしまうことが可及的に回避される。 In the synthetic resin container lid of the present invention, when an excessive force is applied to the main body detached from the mouth and neck, the one side non-break connection piece and the other side non-break connection piece are respectively disposed near the proximal end It is forcibly fractured in the induced induced fracture region. Therefore, the remaining portions of the one-sided non-breaking connection piece and the other-side non-breaking connection piece remaining at the tamper-evident foot are sufficiently small, and the one-sided non-breaking connection piece and the other-side non-breaking connection piece remaining at the tamper-evident foot The remainder avoids as much as possible for the consumer to feel uncomfortable or to damage the lips.
以下、本発明に従って構成された合成樹脂製容器蓋の好適実施形態を図示している添付図面を参照して、更に詳細に説明する。 A preferred embodiment of a synthetic resin container lid constructed in accordance with the present invention will now be described in more detail with reference to the accompanying drawings which illustrate it.
本発明に従って構成された合成樹脂製容器蓋の好適実施形態を図示している図１及び図２を参照して説明すると、ポリエチレン又はポリプロピレンの如き適宜の合成樹脂から射出成形等によって好都合に一体成形することができる、全体を番号２で示す容器蓋は、本体４とタンパーエビデント裾部６とを含んでいる。本体４は円形天面壁８とこの天面壁８の周縁から垂下する円筒形状のスカート壁１０とを有する。天面壁８の内面には２条のシール突条、即ち内側環状突条１２及び外側環状突条１４が形成されている。 A preferred embodiment of a synthetic resin container lid constructed in accordance with the present invention will be described with reference to FIGS. 1 and 2 illustrating the preferred embodiment, and is integrally molded by injection molding or the like from an appropriate synthetic resin such as polyethylene or polypropylene. The container lid, which can be seen generally at 2, includes a body 4 and a tamper-evidence skirt 6. The main body 4 has a circular top wall 8 and a cylindrical skirt wall 10 depending from the periphery of the top wall 8. On the inner surface of the top wall 8, two sealing ridges, ie, an inner annular ridge 12 and an outer annular ridge 14 are formed.
図１及び図２を参照して説明を続けると、図示の容器蓋２においては、本体４の天面壁８の上面とスカート壁１０の外周面は断面図において円弧状の境界面を介して接続されている。そして、スカート壁１０の外周面の主部１６は略鉛直に垂下せしめられており、スカート壁１０の下端部１８は半径方向下方に向かって半径方向外方に傾斜して延び、次いで半径方向内方に向かって弧状に延びている。スカート壁１０の外周面における上記主部１８には、周方向に間隔をおいて軸線方向に延びる突条部とかかる突条部間に位置する非突条部とから構成されたナール２０が形成されている。スカート壁１０の内周面には雌螺条２２が形成されている。かかる雌螺条２２の螺合開始先端は、上方から見て後述する突出片の中心から４５度乃至１３５度の範囲に位置付けられているのが好都合である。 1 and 2, in the illustrated container lid 2, the upper surface of the top wall 8 of the main body 4 and the outer peripheral surface of the skirt wall 10 are connected via an arc-shaped interface in the sectional view. It is done. The main portion 16 of the outer peripheral surface of the skirt wall 10 is suspended substantially vertically, and the lower end portion 18 of the skirt wall 10 extends radially outwardly and obliquely downward, and then radially inward. It extends in an arc towards the The main portion 18 on the outer peripheral surface of the skirt wall 10 is formed with a knurl 20 composed of axially extending ridges spaced at intervals in the circumferential direction and non-protrusions positioned between the ridges. It is done. A female thread 22 is formed on the inner peripheral surface of the skirt wall 10. The screwing start point of the female screw 22 is conveniently located in the range of 45 degrees to 135 degrees from the center of the projecting piece described later when viewed from above.
タンパーエビデント裾部６は全体として円筒形状であり、周方向に間隔をおいて配設された複数個の破断可能橋絡部２４を介して本体４のスカート壁１０に接続させている。タンパーエビデント裾部６の内周面には係止手段２６が配設されている。図示の実施形態における係止手段２６は、周方向に間隔をおいて配設された複数個の係止片（そのうちの１個を図２に図示ししている）から構成されており、係止片の各々はタンパーエビデント裾部６の内周面から半径方向内方に傾斜して上方に延出せしめられている。係止手段２６は、係止片に代えてタンパーエビデント裾部６の内周面から半径方向内方に突出する係止突条から構成することもできる。 The tamper evident foot 6 is generally cylindrical in shape and is connected to the skirt wall 10 of the main body 4 via a plurality of breakable bridges 24 spaced in the circumferential direction. A locking means 26 is disposed on the inner peripheral surface of the tamper-evident foot portion 6. The locking means 26 in the illustrated embodiment is constituted by a plurality of locking pieces (one of which is shown in FIG. 2) disposed at intervals in the circumferential direction. Each of the stoppers extends upward from the inner circumferential surface of the tamper-evident skirt 6 radially inward. The locking means 26 can also be composed of locking ridges projecting radially inward from the inner peripheral surface of the tamper-evident foot 6 instead of the locking pieces.
図１において番号２８で示す領域において、本体４のスカート壁１０の下端縁は他の領域の下端縁よりも上方に変位せしめられており、また番号３０で示す領域においてタンパーエビデント裾部６の上端縁は他の領域の上端縁よりも下方に変位せしめられ、そして更に領域２８及び３０の中央部においてはタンパーエビデント裾部６の上端縁は更に下方に変位せしめられており、スカート壁１０とタンパーエビデント裾部６との間には開口３２が生成されている。開口３２の周方向中央部において、スカート壁１０には下方に突出する略矩形状の突出片３４が形成されている。 The lower edge of the skirt wall 10 of the main body 4 is displaced above the lower edge of the other regions in the area indicated by the numeral 28 in FIG. 1 and in the area indicated by the numeral 30 the tamper-evident skirt 6 The upper edge is displaced below the upper edges of the other regions, and further in the middle of the regions 28 and 30, the upper edge of the tamper evident skirt 6 is displaced further downward, the skirt wall 10 An opening 32 is created between the and the tamper-evident foot 6. At the circumferential center of the opening 32, the skirt wall 10 is formed with a substantially rectangular projecting piece 34 projecting downward.
図１に明確に図示するとおり、上記開口３２内には、更に、突出片３４の両側に位置する非破断接続片３６ａ及び３６ｂが配設されている。図示の実施形態においては、図１において突出片３４の左側（上方から見て時計方向側）に位置する片側非破断接続片３６ａは、タンパーエビデント裾部６に接続された片端から図１において右方に向かって（従って、上方から見て反時計方向に上記突出片３４に向かって）実質上水平に延出する反時計方向傾動部３８ａ、この反時計方向傾動部３８ａの他端に接続された介在部４０ａ、及び介在部４０ａに接続された片端から図１において左方に向かって（上方から見て時計方向）に実質上水平に延びて他端はスカート壁１０に接続されている時計方向傾動部４２ａから構成されている。時計方向傾動部４２ａの延在長さは反時計方向傾動部３８ａの延在長さよりも大きい。図１において突出片３４の右側（上方から見て反時計方向側）に位置する他側非破断接続片３６ｂは、タンパーエビデント裾部６に接続された片端から図１において左方に（従って、上方から見て時計方向に上記突出片３４に向かって）実質上水平に延出する時計方向傾動部３８ｂ、この時計方向傾動部３８ｂの他端に接続された介在部４０ｂ、及び介在部４０ｂに接続された片端から図１において右方（上方から見て反時計方向）に実質上水平に延びて他端はスカート壁１０に接続されている反時計方向傾動部４２ｂから構成されている。反時計方向傾動部４２ｂの延在長さは時計方向傾動部３８ｂの延在長さよりも小さい。 As clearly shown in FIG. 1, non-rupturing connection pieces 36 a and 36 b located on both sides of the projecting piece 34 are further disposed in the opening 32. In the illustrated embodiment, the non-ruptured connection piece 36a located on the left side (clockwise as viewed from above) of the projecting piece 34 in FIG. 1 is one end connected to the tamper evidence foot 6 in FIG. A counterclockwise inclining portion 38a extending substantially horizontally toward the right side (thus, as viewed from above and toward the projecting piece 34 in the counterclockwise direction), connected to the other end of the counterclockwise inclining portion 38a The interposed portion 40a and one end connected to the interposed portion 40a extend substantially horizontally in the left direction (clockwise as viewed from above) in FIG. 1 and the other end is connected to the skirt wall 10 It is comprised from the clockwise direction tilting part 42a. The extension length of the clockwise tilt portion 42a is larger than the extension length of the counterclockwise tilt portion 38a. The other side non-breaking connection piece 36b located on the right side (counterclockwise as viewed from above) of the projecting piece 34 in FIG. 1 is from the end connected to the tamper evident foot 6 to the left in FIG. A clockwise inclining portion 38b extending substantially horizontally in a clockwise direction as viewed from above, the intervening portion 40b connected to the other end of the clockwise inclining portion 38b, and an intervening portion 40b 1 is substantially horizontally extending in the right direction (counterclockwise as viewed from above) in FIG. 1 and the other end is constituted by a counterclockwise tilting portion 42 b connected to the skirt wall 10. The extension length of the counterclockwise inclining portion 42b is smaller than the extension length of the clockwise inclining portion 38b.
本発明に従って構成された容器蓋２においては、上記片側非破断接続片３６ａの反時計方向傾動部３８ａの基端近傍（即ちタンパーエビデント裾部６に接続された片端近傍）と上記他側非破断接続片３６ｂの時計方向傾動部３８ｂの基端近傍（即ちタンパーエビデント裾部６に接続された片端近傍）に、誘導強制破断領域４４ａ及び４４ｂが配設されていることが重要である。図示の実施形態においては、誘導強制破断領域４４ａ及び４４ｂの各々は、反時計方向傾動部３８ａの基端近傍及び時計方向傾動部３８ｂの基端近傍に切欠４６ａ及び４６ｂを形成することによって配設されている。切欠４６ａは、反時計方向傾動部３８ａの上縁から下方に延びる形態であるのが好ましく、そしてまた図１において左側（上方から見て時計方向側）の上端縁部は上方に向かって左方（上方から見て時計方向）に円滑に延びる凸弧状であるのが好適である。同様に、切欠４６ｂは、時計方向傾動部３８ｂの上縁から下方に延びる形態であるのが好ましく、そしてまた図１において右側（上方から見て反時計方向側）の上端縁部は上方に向かって右方（上方から見て反時計方向）に円滑に延びる凸弧状であるのが好適である。図示の実施形態においては、切欠４６ａ及び４６ｂの各々は略半円形状であり、各々の両側上端縁部は共に上方及び外方に向かって円滑に延びる凸弧状である。所望ならば、切欠４６ａ及び４６ｂを形成することに代えて、反時計方向傾動部３８ａの基端近傍及び時計方向傾動部３８ｂの基端近傍の各々に局部的薄肉部を形成することによって、誘導強制破断領域４４ａ及び４４ｂを配設することもできる。誘導強制破断領域４４ａ及び４４ｂは、容器の口頸部に対する本体４の開閉（これについては後に詳述する）が５０回繰り返し行われても破断することがなく、しかしながら本体４に５０Ｎ程度の過剰な力が加えられた際には強制的に破断されることが望ましい。かような点から、誘導強制破断領域４４ａ及び４４ｂの断面積はそれらに隣接する領域の断面積の４０乃至６０％程度であるのが好適であり、特に呼び径２８ｍｍの容器蓋においては、誘導強制破断領域４４ａ及び４４ｂの断面積は０．５乃至０．６ｍｍ２程度の断面積を有するのが好適である。 In the container lid 2 constructed in accordance with the present invention, the vicinity of the base end of the counterclockwise inclined portion 38a of the one-side non-break connection piece 36a (that is, the one end vicinity connected to the tamper evident foot 6) and the other side non-break It is important that the induced forcible fracture regions 44a and 44b are disposed in the vicinity of the base end of the clockwise inclined portion 38b of the fracture connection piece 36b (that is, in the vicinity of one end connected to the tamper evident foot 6). In the illustrated embodiment, each of the induced forcible fracture regions 44a and 44b is disposed by forming the notches 46a and 46b near the proximal end of the counterclockwise tilting portion 38a and near the proximal end of the clockwise tilting portion 38b. It is done. The notch 46a preferably extends downward from the upper edge of the counterclockwise inclining portion 38a, and also in FIG. 1, the upper end edge of the left side (clockwise side as viewed from above) is directed upward toward the left. Preferably, it has a convex arc shape that smoothly extends (clockwise as viewed from above). Similarly, the notch 46b preferably extends downward from the upper edge of the clockwise tilting portion 38b, and also in FIG. 1 the upper end edge of the right side (counterclockwise as viewed from above) is directed upward. Preferably, it has a convex arc shape extending smoothly to the right (counterclockwise as viewed from above). In the illustrated embodiment, each of the notches 46a and 46b is generally semi-circular in shape, and both upper end edges thereof are both convex arcs extending smoothly upward and outward. If desired, instead of forming the notches 46a and 46b, induction may be carried out by forming locally thinned portions near the proximal end of the counterclockwise tilting portion 38a and near the proximal end of the clockwise tilting portion 38b, respectively. Forced fracture regions 44a and 44b can also be provided. The induced forcible fracture regions 44a and 44b are not broken even if the opening and closing of the main body 4 with respect to the mouth and neck of the container (this will be described in detail later) is repeated 50 times. Forced breaking is desirable when a force is applied. From such a point of view, it is preferable that the cross-sectional area of the induced forcible fracture areas 44a and 44b is about 40 to 60% of the cross-sectional area of the area adjacent to them, particularly for container lids having a nominal diameter of 28 mm. The cross sectional area of the forced fracture regions 44a and 44b preferably has a cross sectional area of about 0.5 to 0.6 mm 2 .
図２を参照して説明を続けると、ポリエチレンテレフタレートの如き適宜の合成樹脂或いはガラスから形成することができる容器の口頸部５０は全体として円筒形状であり、その上面は開口されている。口頸部５０の外周面には、雄螺条５２とこの雄螺条５２の下方に位置する係止あご部５４が形成されている。 Continuing with reference to FIG. 2, the mouth and neck 50 of the container, which may be made of a suitable synthetic resin such as polyethylene terephthalate or glass, is generally cylindrical in shape and its top surface is open. A male screw 52 and a locking jaw 54 positioned below the male screw 52 are formed on the outer peripheral surface of the mouth and neck 50.
口頸部５０に容器蓋２を装着して口頸部５０を密封する際には、口頸部５０に容器蓋２を被嵌して閉方向（図２において上方から見て時計方向）に回転せしめ、口頸部５０の雄螺条５２に容器蓋２の雌螺条２２を螺合せしめる。雄螺条５２に対する雌螺条２２の螺合の進行に応じて容器蓋２は口頸部５０に対して漸次下降する。図２に図示する状態まで口頸部５０に対して容器蓋２が下降せしめられると、容器蓋２の本体４における天面壁８の内面に形成されている内側環状突条１４及び外側環状突条１６が夫々口頸部５０の内周面及び外周面に密接せしめられ、これによって口頸部５０が密封される。容器蓋２のタンパーエビデント裾部６の内周面に配設されている係止手段２６は口頸部５０の係止あご部５４を弾性的に乗り越えて、係止あご部５４の下方に位置する。 When the container lid 2 is attached to the mouth and neck 50 and the mouth and neck 50 is sealed, the container lid 2 is fitted on the mouth and neck 50 and the closing direction (clockwise as viewed from above in FIG. 2) Then, the female screw 22 of the container lid 2 is screwed onto the male screw 52 of the mouth and neck 50. The container lid 2 gradually descends with respect to the neck 50 in accordance with the progress of the screwing of the female screw 22 with the male screw 52. When the container lid 2 is lowered relative to the mouth and neck 50 to the state shown in FIG. 2, the inner annular ridge 14 and the outer annular ridge formed on the inner surface of the top wall 8 of the main body 4 of the container lid 2 16 is brought into intimate contact with the inner and outer peripheral surfaces of the mouth and neck 50, respectively, whereby the mouth and neck 50 is sealed. The locking means 26 disposed on the inner peripheral surface of the tamper-evident foot portion 6 of the container lid 2 resiliently rides over the locking jaw portion 54 of the mouth and neck portion 50 and under the locking jaw portion 54. To position.
口頸部５０を開封する際には、容器蓋２を開方向（図２において上方から見て反時計方向）に回転せしめ、口頸部５０の雄螺条５２に対する容器蓋２の雌螺条２２の螺合を漸次解除する。螺合を漸次解除すると容器蓋２の本体４は開方向に回転せしめられると共に上昇せしめられるが、タンパーエビデント裾部６は係止手段２６が口頸部５０の係止あご部５４に係止して上昇が阻止され、これに起因して破断可能橋絡部２４に相当な応力が生成され、破断可能橋絡部２４が破断される。しかる後においては、容器蓋２の本体４は開方向への回転と共に上昇し、タンパーエビデント裾部６から上方に漸次離間せしめられる。図１及び図２と共に図３を参照することによって明確に理解される如く、タンパーエビデント裾部６から本体４が漸次上方に離間せしめられると、片側非破断接続片３６ａの反時計方向傾動部３８ａ及び他側非破断接続片３６ｂの反時計方向傾動部４２ｂは正面から見て反時計方向に旋回され、片側非破断接続片３６ａの時計方向傾動部４２ａ及び他側非破断接続片３６ｂの時計方向傾動部３８ｂは正面から見て時計方向に旋回され、これに応じて反時計方向傾動部３８ａ、反時計方向傾動部４２ｂ、時計方向傾動部４２ａ及び時計方向傾動部３８ｂの鉛直線に対する傾斜角度が漸次低減せしめられる。他側非破断接続片３６ｂの反時計方向傾動部４２ｂは、延在長さが微小である故に傾動角度も微小である。片側非破断接続片３６ａにおいては反時計方向傾動部３８ａの延在長さよりも時計方向傾動部４２ａの延在長さのほうが大きく、他側非破断接続片３６ｂにおいては時計方向傾動部３８ｂの延在長さが反時計方向傾動部４２ｂの延在長さよりも大きいことに起因して、容器蓋２の本体４には図３において左方（上方から見て時計方向）に変位せんとする力が作用するが、本体４の変位は口頸部５０によって阻止され、それ故に時計方向傾動部４２ａ及び時計方向傾動部３８ｂには引っ張り応力が生成され、時計方向傾動部４２ａ及び時計方向傾動部３８ｂは幾分弾性的に変形されると共に幾分塑性変形される。本体２の開方向への回転が進行し、口頸部５０の雄螺条５２に対する容器蓋２の雌螺条２２の螺合が完全に解除されると、本体４は口頸部５０から離脱される。しかしながら、本体４は片側非破断接続片３６ａ及び他側非破断接続片３６ｂを介して、口頸部５０に装着され続けているタンパーエビデント裾部６に接続され続けている故に、容器の口頸部５０から離間されることはない。本体４が口頸部５０から離脱され、口頸部５０による本体４の拘束が解除されると、時計方向傾動部４２ａ及び時計方向傾動部３８ｂの弾性変形は弾性的に復元されるが塑性変形はそのまま残留することに起因して、本体４は口頸部５０及びタンパーエビデント裾部６に対して図３において左方（上方から見て時計方向）に変位される。 When opening the neck 50, the container lid 2 is rotated in the opening direction (counterclockwise as viewed from above in FIG. 2), and the female screw of the container lid 2 with respect to the male screw 52 of the neck 50 Gradually release 22 screws. As the screwing is gradually released, the main body 4 of the container lid 2 is rotated and raised in the opening direction, but the locking means 26 of the tamper-evidence foot 6 is locked to the locking jaw 54 of the neck 50 As a result, the rise is prevented, which causes considerable stress to be generated in the breakable bridge 24 and the breakable bridge 24 is broken. After that, the main body 4 of the container lid 2 ascends with the rotation in the opening direction, and is gradually separated upward from the tamper evident foot 6. As is clearly understood by referring to FIG. 3 in conjunction with FIGS. 1 and 2, when the main body 4 is gradually spaced upward from the tamper evident foot 6, the counterclockwise tilting portion of the one-side non-breaking connection piece 36a The counterclockwise inclining portion 42b of 38a and the other side non-breaking connection piece 36b is turned counterclockwise as viewed from the front, and the clock of the clockwise direction tilting part 42a of the one side non-breaking connection piece 36a and the other side non-breaking connection piece 36b The direction inclining portion 38b is turned clockwise as viewed from the front, and accordingly, the inclination angles of the counterclockwise inclining portion 38a, the counterclockwise inclining portion 42b, the clockwise inclining portion 42a and the clockwise inclining portion 38b with respect to vertical lines Is gradually reduced. The counterclockwise tilting portion 42b of the other non-breaking connection piece 36b has a minute extension length and therefore has a small tilting angle. In the one-side non-break connection piece 36a, the extension length of the clockwise tilt part 42a is larger than the extension length of the counterclockwise tilt part 38a, and in the other-side non-break connection piece 36b, the extension of the clockwise tilt part 38b A force that causes the main body 4 of the container lid 2 not to displace to the left in FIG. 3 (clockwise as viewed from above) due to the length of stay being greater than the extension length of the counterclockwise inclining portion 42b. Although the movement of the main body 4 is blocked by the neck 50, a tensile stress is generated in the clockwise tilt portion 42a and the clockwise tilt portion 38b, and the clockwise tilt portion 42a and the clockwise tilt portion 38b. Is somewhat elastically deformed and somewhat plastically deformed. When the rotation of the main body 2 in the opening direction proceeds and the screwing of the female screw 22 of the container lid 2 with the male screw 52 of the neck 50 is completely released, the main body 4 is detached from the neck 50 Be done. However, since the main body 4 continues to be connected to the tamper-evidence foot 6 which continues to be attached to the neck 50 via the one-side non-break connection piece 36 a and the other-side non-break connection piece 36 b It is not spaced from the neck 50. When the main body 4 is released from the neck 50 and the restraint of the main body 4 by the neck 50 is released, the elastic deformation of the clockwise tilting portion 42a and the clockwise tilting portion 38b is elastically restored but plastic deformation As a result of remaining as it is, the main body 4 is displaced leftward (clockwise as viewed from above) in FIG. 3 with respect to the mouth neck 50 and the tamper evidence foot 6.
容器蓋２の本体４が口頸部５０から離脱された後においては、片側非破断接続片３６ａ及び他側非破断接続片３６ｂとタンパーエビデント裾部１０との接続領域、従って反時計方向傾動部３８ａの片端及び時計方向傾動部３８ｂの片端を中心として本体４を口頸部５０から遠ざかる方向に、図４に図示する状態まで旋回せしめる。かくすると、本体４に形成されている突出片３４の下端部（先端部）外側面が口頸部の係止あご部５４の上面に当接し、本体４のスカート壁１０の下端がタンパーエビデント裾部６の外周面に当接又は近接し、これによって本体４は図４に図示する位置に解除自在に保持される。従って、消費者は本体４の存在によって阻害されることなく、容器内に存在する清涼飲料の如き内容物を飲食することができる。 After the main body 4 of the container lid 2 is separated from the neck 50, the connection area between the one side non-break connection piece 36a and the other side non-break connection piece 36b and the tamper evidence foot 10, thus counterclockwise tilting The main body 4 is pivoted in the direction away from the neck 50 around the one end of the portion 38a and the one end of the clockwise tilting portion 38b to the state shown in FIG. Thus, the lower end (tip end) outer surface of the projecting piece 34 formed on the main body 4 abuts on the upper surface of the locking jaw 54 of the neck and neck, and the lower end of the skirt wall 10 of the main body 4 is tamper evident It abuts on or is in close proximity to the outer peripheral surface of the skirt 6, whereby the body 4 is releasably held in the position illustrated in FIG. Therefore, the consumer can eat and drink contents such as a soft drink present in the container without being inhibited by the presence of the main body 4.
内容物の飲食を途中で中断した場合には、図４に図示する位置に保持されている本体４を図４において反時計方向に旋回せしめて再び口頸部５０に被嵌し、そして容器蓋２を閉方向に回転せしめて口頸部５０の雄螺条５２に容器蓋２の雌螺条２２を螺合せしめ、かくして容器蓋２を再び図２に図示する状態に位置せしめ、口頸部５０を仮密封することができる。本体４のスカート壁１０の内周面に形成されている雌螺条２２の螺合開始先端が、上方から見て突出片３４の中心から４５度乃至１３５度の範囲の角度領域に位置付けられている場合、口頸部５０から一旦離脱された本体４は図３において左方に変位されている故に、雌螺条２２の螺合開始先端は口頸部５０に対して幾分半径方向外側に変位している。従って、雌螺条２２の螺合開始先端と雄螺条５２の螺合開始先端とが角度的に整合した状態であっても、両者の干渉によって口頸部５０に対する本体４の円滑な被嵌が阻害されることが充分確実に回避される。 When eating and drinking of the contents is interrupted halfway, the main body 4 held in the position shown in FIG. 4 is turned counterclockwise in FIG. 4 and fitted again on the neck 50, and the container lid 2 is rotated in the closing direction and the female screw 22 of the container lid 2 is screwed on the male screw 52 of the mouth and neck 50, thus the container lid 2 is again positioned as illustrated in FIG. 50 can be temporarily sealed. The screwing start point of the female screw 22 formed on the inner peripheral surface of the skirt wall 10 of the main body 4 is positioned in an angular range of 45 degrees to 135 degrees from the center of the projecting piece 34 when viewed from above In this case, since the main body 4 once detached from the mouth and neck 50 is displaced leftward in FIG. 3, the screwing start tip of the female screw 22 is somewhat radially outward with respect to the mouth and neck 50 It is displaced. Therefore, even if the screwing start tip of the female screw 22 and the screwing start tip of the male screw 52 are in angular alignment, the smooth interference of the main body 4 with the mouth and neck 50 due to the interference between the two. It is sufficiently reliably avoided that
上述したとおり、通常の容器蓋においては口頸部から離脱された本体はタンパーエビデント裾部から完全に分離されることから、稀ではあるが消費者が勘違いして或いは意図的に口頸部５０から離脱された本体４に過剰な力を加えて片側非破断接続片３６ａ及び他側非破断接続片３６ｂを破断し、タンパーエビデント裾部６から本体４を完全に分離してしまうことがある。本発明に従って構成された容器蓋２においては、片側非破断接続片３６ａの反時計方向傾動部３８ａの基端近傍に誘導強制破断領域４４ａが配設されていると共に他側非破断接続片３６ｂの基端近傍に誘導強制破断領域４４ｂが配設されている故に、片側非破断接続片３６ａは誘導強制破断領域４４ａで破断され、他側非破断接続片３６ｂも誘導強制破断領域４４ｂで破断される。従って、図５に明確に図示する如く、タンパーエビデント裾部６に残留する片側非破断接続片３６ａの残部及び他側非破断接続片３６ｂの残部は充分に小さい。加えて、図示の実施形態においては、誘導強制破断領域４４ａを構成する切欠４６ａは、反時計方向傾動部３８ａの上縁から下方に延びる形態であり、そしてまた図１において左側（上方から見て時計方向側）の上端縁部は上方に向かって左方（上方から見て時計方向）に円滑に延びる凸弧状である。同様に、誘導強制破断領域４４ｂを構成する切欠４６ｂは、時計方向傾動部３８ｂの上縁から下方に延びる形態であり、そしてまた図１において右側（上方から見て反時計方向側）の上端縁部は上方に向かって右方（上方から見て反時計方向）に円滑に延びる凸弧状である。かような次第であるので、タンパーエビデント裾部６に残留する片側非破断接続片３６ａの残部及び他側非破断接続片３６ｂの残部によって、消費者が不快感を覚え或いは唇を損傷してしまうことが可及的に回避される。更に詳述すると、切欠４６ａ及び４６ｂは上縁から下方に延びる形態である故に、本体４に過剰な力を加えた際には切欠の下端から下方に向かって破断が進行し、従って破断された端部は切欠４６ａ及び４６ｂの下方に位置し、破断された端部に消費者の唇が触れてしまうことが可及的に回避される。また、消費者の唇が触れる可能性がある切欠４６ａ及び４６ｂの上端部は円滑に延びる凸条であるので、消費者の唇が触れたとしても損傷される虞がない。 As described above, in the ordinary container lid, the main body detached from the mouth and neck is completely separated from the tamper evidence tail, so it is rare, but the consumer misunderstood or intentionally the mouth and neck Excessive force is applied to the main body 4 separated from 50 to break the one-sided non-break connection piece 36 a and the other non-break connection piece 36 b and completely separate the main body 4 from the tamper evident foot 6 is there. In the container lid 2 configured in accordance with the present invention, the induction forcible fracture region 44a is disposed in the vicinity of the base end of the counterclockwise tilting portion 38a of the one-side non-break connection piece 36a and the other-side non-break connection piece 36b. Since the inductive forcible fracture region 44b is disposed in the vicinity of the base end, the one-sided non-fractured connection piece 36a is fractured at the inductive forcible fracture region 44a, and the other non-fractured connection piece 36b is also fractured at the inductive forced fracture region 44b . Accordingly, as clearly shown in FIG. 5, the remaining portion of the one-sided non-breaking connection piece 36a remaining in the tamper-evident foot 6 and the remaining portion of the other-side non-breaking connection piece 36b are sufficiently small. In addition, in the illustrated embodiment, the notch 46a that constitutes the induced forcible fracture area 44a is configured to extend downward from the upper edge of the counterclockwise tilting portion 38a, and also in FIG. The upper end edge of the clockwise side has a convex arc shape that smoothly extends leftward (clockwise as viewed from above) upward. Similarly, the notch 46b constituting the induction forced fracture region 44b is configured to extend downward from the upper edge of the clockwise tilting portion 38b, and also in FIG. 1 at the upper edge of the right side (counterclockwise as viewed from above). The portion has a convex arc shape that smoothly extends rightward (counterclockwise as viewed from above) upward. As such, depending on the remainder of the one-sided non-break connection piece 36a remaining in the tamper-evidence foot 6 and the remainder of the other-side non-break connection piece 36b, the consumer may feel discomfort or damage the lips. It is avoided as much as possible. More specifically, since the notches 46a and 46b are configured to extend downward from the upper edge, when excessive force is applied to the main body 4, the fracture progresses from the lower end of the notch downward, and thus is broken The ends are located below the notches 46a and 46b, and it is avoided as much as possible that the lips of the consumer touch the broken ends. In addition, since the upper ends of the notches 46a and 46b to which the lips of the consumer may touch are smoothly extending ridges, there is no risk of damage even if the lips of the consumer touch.
これに対して、片側非破断接続片３６ａ及び他側非破断接続片３６ｂに誘導強制破断領域４４ａ及び４４ｂが形成されていない場合、本発明者等の経験によれば、消費者が勘違いして或いは意図的に口頸部から離脱された本体４に過剰な力を加えて片側非破断接続片３６ａ及び他側非破断接続片３６ｂを破断する場合、片側非破断接続片３６ａは反時計方向傾動部３８ａと介在部４０ａとの境界領域或いは介在部４０ａと時計方向傾動部４２ａとの境界領域において破断される傾向があり、同様に他側非破断接続片３６ｂは時計方向傾動部３８ｂと介在部４０ｂとの境界領域或いは介在部４０ｂと反時計方向傾動部４２ｂとの境界領域において破断される傾向がある。従って、図６に例示するとおり、タンパーエビデント裾部６に残留する片側非破断接続片３６ａの残部及び他側非破断接続片３６ｂの残部は比較的大きく、そしてまた鋭い自由端を有することが少なくない。それ故に、タンパーエビデント裾部６に残留する片側非破断接続片３６ａの残部及び他側非破断接続片３６ｂの残部によって、消費者が不快感を覚え或いは唇を損傷してしまう虞がある。 On the other hand, when the induction forcible fracture regions 44a and 44b are not formed on the one-side non-break connection piece 36a and the other-side non-break connection piece 36b, according to the experience of the present inventors, the consumer misunderstands Alternatively, in the case of intentionally applying excessive force to the main body 4 detached from the mouth and neck to break the one-sided non-break connection piece 36a and the other-side non-break connection piece 36b, the one-side non-break connection piece 36a tilts counterclockwise. There is a tendency to be broken in the boundary area between the part 38a and the intervening part 40a or the boundary area between the intervening part 40a and the clockwise tilting part 42a, and similarly the other non-breaking connection piece 36b is the clockwise tilting part 38b and the intervening part There is a tendency to be broken in the boundary region with 40 b or in the boundary region between the intervening portion 40 b and the counterclockwise tilting portion 42 b. Therefore, as illustrated in FIG. 6, the remainder of the one-sided non-break connection piece 36a remaining on the tamper evident foot 6 and the remainder of the other-side non-break connection piece 36b are relatively large and also have sharp free ends. Not a few. Therefore, there is a risk that the consumer may feel discomfort or damage the lips due to the remaining portion of the one-side non-breaking connection piece 36 a remaining in the tamper-evidence foot portion 6 and the remaining portion of the other-side non-breaking connection piece 36 b.
２：容器蓋
４：本体
６：タンパーエビデント裾部
８：天面壁
１０：スカート壁
２２：雌螺条
２４：破断可能橋絡部
２６：係止手段
３４：突出片
３６ａ：片側非破断接続片
３６ｂ：他側非破断接続片
３８ａ：反時計方向傾動部
４０ａ：介在部
４２ａ：時計方向傾動部
３８ｂ：時計方向傾動部
４０ｂ：介在部
４２ｂ：反時計方向傾動部
４４ａ：誘導強制破断領域
４４ｂ：誘導強制破断領域
４６ａ：切欠
４６ｂ：切欠
５０：容器の口頸部
５２：雄螺条
５４：係止あご部
2: Container lid 4: Main body 6: Tamper evident foot 8: Top wall 10: Skirt wall 22: Female thread 24: Breakable bridge 26: Locking means 34: Projection piece 36a: One side non-break connection piece 36b: other side non-break connection piece 38a: counterclockwise inclining portion 40a: intervening portion 42a: clockwise inclining portion 38b: clockwise inclining portion 40b: intervening portion 42b: counterclockwise inclining portion 44a: induction forced break area 44b: Induction forced fracture area 46a: Notch 46b: Notch 50: Mouth and neck of container 52: Male thread 54: Locking jaw
Claims (6)
天面壁及び該天面壁の周縁から垂下する筒状スカート壁を有し、該スカート壁の内周面には該雄螺条に螺合される雌螺条が形成されている本体と、周方向に間隔をおいて配設された複数個の破断可能橋絡部を介して該本体の該スカート壁に接続され、内周面には該係止あご部に係止される係止手段が配設されている筒状タンパーエビデント裾部とを含み、
該本体の該スカート壁には下方に突出する突出片が配設されており、該突出片の周方向両側には、該本体の該スカート壁と該タンパーエビデント裾部とを接続する非破断接続片が配設されており、
上方から見て該突出片よりも時計方向側に位置する片側非破断接続片は、該タンパーエビデント裾部に接続された基端から該突出片に向かって延在し且つ該タンパーエビデント裾部に対して該本体が上方に移動されると正面から見て反時計方向に傾動される反時計方向傾動部を含み、
上方から見て該突出片よりも反時計方向側に位置する他側非破断接続片は、該タンパーエビデント裾部に接続された基端から該突出片に向かって延在し且つ該タンパーエビデント裾部に対して該本体が上方に移動されると正面から見て時計方向に傾動される時計方向傾動部を含む、
合成樹脂製容器蓋において、
該片側非破断接続片の該反時計方向傾動部の該基端近傍及び該他側非破断接続片の該時計方向傾動部の該基端近傍には誘導強制破断領域が配設されている、
ことを特徴とする合成樹脂製容器蓋。 It is a synthetic resin container lid applied to a container in which a male screw thread and a locking jaw portion located below the male screw thread are formed on the outer peripheral surface of the mouth and neck portion,
A top surface wall and a cylindrical skirt wall depending from the peripheral edge of the top surface wall, the inner circumferential surface of the skirt wall is formed with a main body on which an internal thread to be screwed with the external thread is formed; A plurality of breakable bridges disposed at intervals to connect to the skirt wall of the main body, and an inner peripheral surface is provided with a locking means to be locked to the locking jaws Including a cylindrical tamper-evidence skirt portion provided,
Downwardly projecting protrusions are disposed on the skirt wall of the main body, and non-breakage connecting the skirt wall of the main body and the tamper-evidence skirt is provided on both sides in the circumferential direction of the projecting pieces. Connection pieces are provided,
The one-side non-breaking connection piece positioned clockwise from above the projecting piece as viewed from above extends from the proximal end connected to the tamper-evident foot toward the projecting piece and the tamper-evidence hem Includes a counterclockwise tilting portion which is tilted counterclockwise as viewed from the front as the body is moved upward with respect to the portion;
The other non-breaking connection piece positioned counterclockwise as viewed from above the projection piece extends from the proximal end connected to the tamper evident foot toward the projection piece and the tamper shrimp Including a clockwise tilting portion which is tilted clockwise as viewed from the front when the main body is moved upward with respect to the dent skirt
In the plastic container lid,
An induced forcible fracture region is disposed in the vicinity of the proximal end of the counterclockwise tilting portion of the one-side non-breaking connection piece and in the vicinity of the proximal end of the clockwise tilting portion of the other non-breaking connection piece.
Container lid made of synthetic resin.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2017217980A JP6998737B2 (en) | 2017-11-13 | 2017-11-13 | Synthetic resin container lid |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2017217980A JP6998737B2 (en) | 2017-11-13 | 2017-11-13 | Synthetic resin container lid |
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| JP2019089564A true JP2019089564A (en) | 2019-06-13 |
| JP6998737B2 JP6998737B2 (en) | 2022-01-18 |
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| JP2017217980A Active JP6998737B2 (en) | 2017-11-13 | 2017-11-13 | Synthetic resin container lid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021000607A (en) * | 2019-06-21 | 2021-01-07 | 栗田工業株式会社 | Operational method of biological treatment apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6474491B1 (en) * | 1998-10-29 | 2002-11-05 | Crown Cork & Seal Technologies Corporation | Screw top with tearaway strip |
| JP2005075427A (en) * | 2003-09-02 | 2005-03-24 | Kenji Uenishi | Cap for pet bottle |
| JP2011031912A (en) * | 2009-07-30 | 2011-02-17 | Japan Crown Cork Co Ltd | Synthetic resin container lid |
| JP2011111193A (en) * | 2009-11-26 | 2011-06-09 | Japan Crown Cork Co Ltd | Container cap made of synthetic resin |
| JP5095871B1 (en) * | 2012-04-09 | 2012-12-12 | 株式会社湘南貿易 | PET bottle container and bottle cap |
-
2017
- 2017-11-13 JP JP2017217980A patent/JP6998737B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6474491B1 (en) * | 1998-10-29 | 2002-11-05 | Crown Cork & Seal Technologies Corporation | Screw top with tearaway strip |
| JP2005075427A (en) * | 2003-09-02 | 2005-03-24 | Kenji Uenishi | Cap for pet bottle |
| JP2011031912A (en) * | 2009-07-30 | 2011-02-17 | Japan Crown Cork Co Ltd | Synthetic resin container lid |
| JP2011111193A (en) * | 2009-11-26 | 2011-06-09 | Japan Crown Cork Co Ltd | Container cap made of synthetic resin |
| JP5095871B1 (en) * | 2012-04-09 | 2012-12-12 | 株式会社湘南貿易 | PET bottle container and bottle cap |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021000607A (en) * | 2019-06-21 | 2021-01-07 | 栗田工業株式会社 | Operational method of biological treatment apparatus |
| JP7283253B2 (en) | 2019-06-21 | 2023-05-30 | 栗田工業株式会社 | Operation method of biological treatment equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6998737B2 (en) | 2022-01-18 |
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