JPWO2018025593A1 - Synthetic resin cap - Google Patents

Synthetic resin cap Download PDF

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JPWO2018025593A1
JPWO2018025593A1 JP2018531803A JP2018531803A JPWO2018025593A1 JP WO2018025593 A1 JPWO2018025593 A1 JP WO2018025593A1 JP 2018531803 A JP2018531803 A JP 2018531803A JP 2018531803 A JP2018531803 A JP 2018531803A JP WO2018025593 A1 JPWO2018025593 A1 JP WO2018025593A1
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tamper evidence
cap
protrusion
evidence band
hook
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JP6564141B2 (en
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伸生 川村
伸生 川村
淳史 小野
淳史 小野
慎吾 梅木
慎吾 梅木
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Nihon Yamamura Glass Co Ltd
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Nihon Yamamura Glass Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

タンパーエビデンス性を良好としつつ、開栓トルクの増大をも抑えることのできる合成樹脂製キャップを提供する。容器口部の外周に形成された雄ねじに螺合する雌ねじ５が設けられたスカート壁３と、該スカート壁の下部に環状弱化部６を介して連結されたタンパーエビデンスバンド７とを具備したキャップ１であって、前記タンパーエビデンスバンドの内周側に、前記容器口部の外周に設けられた環状突起９に下方から係止可能なフック８が周方向に間隔をおいて複数設けられ、また、前記タンパーエビデンスバンドの内周側において、前記フックの上方には該タンパーエビデンスバンドの内側に突出する突出部１０が連なり、該突出部の下部には当接部１１が設けられ、該当接部は、前記突出部の内周面から前記フックの上面に向かって、２０度以上の勾配θで内径が小さくなるように延びている。Provided is a synthetic resin cap capable of suppressing the increase in opening torque while improving tamper evidence. A cap provided with a skirt wall 3 provided with an internal thread 5 engaged with an external thread formed on the outer periphery of a container opening, and a tamper evidence band 7 connected to the lower portion of the skirt wall via an annular weakening portion 6 1, and a plurality of hooks 8 which can be locked from below on the annular projection 9 provided on the outer periphery of the container opening on the inner peripheral side of the tamper evidence band are provided in plural at circumferential intervals, A protrusion 10 protruding inward of the tamper evidence band is continuous with an upper side of the hook on an inner peripheral side of the tamper evidence band, and a contact portion 11 is provided at a lower portion of the protrusion. Extends from the inner peripheral surface of the projecting portion toward the upper surface of the hook such that the inner diameter decreases with a slope θ of 20 degrees or more.

Description

本発明は、例えば、飲料物等の内容物を収容する容器の口部に装着される合成樹脂製キャップに関する。   The present invention relates to, for example, a synthetic resin cap attached to the mouth of a container for containing contents such as beverages.

飲料物等の内容物を収容する容器の口部に装着されるキャップとして、一目で開封の有無を確認可能に構成されたものが広く用いられている。このようなキャップとして、容器口部の雄ねじに螺合する雌ねじが設けられたスカート壁を有するキャップ本体と、スカート壁の下部に環状弱化部を介して連結されたタンパーエビデンスバンドとを具備するものが知られている。   As a cap attached to the mouth of a container for containing contents such as a beverage, those having a structure capable of confirming the presence or absence of opening at a glance are widely used. As such a cap, a cap body having a skirt wall provided with an internal thread screwed to an external thread of a container mouth, and a tamper evidence band connected to the lower portion of the skirt wall via an annular weakening portion It has been known.

上記従来のキャップでは、容器口部に装着された状態からの開封操作（最初の開栓操作）に伴い、タンパーエビデンスバンドの内周に設けられたフック（係止手段）が容器口部の外周に設けられた環状突起（係止あご部）に係止した後、タンパーエビデンスバンドとスカート壁とを画するミシン目状のスリット間に形成されたブリッジ（橋絡部）が破断され、キャップ本体とタンパーエビデンスバンドとが互いに分離される（特許文献１参照）。従って、環状弱化部を構成するブリッジの破断の有無を視認することにより、開封操作が行われたか否かを容易に確認することができる。   In the conventional cap described above, the hook (locking means) provided on the inner periphery of the tamper evidence band is the outer periphery of the container opening along with the opening operation (first opening operation) from the state of being attached to the container opening. And the bridge (bridge) formed between the perforation-like slits that define the tamper evidence band and the skirt wall is broken, and the cap body And the tamper evidence band are separated from each other (see Patent Document 1). Therefore, whether or not the opening operation has been performed can be easily confirmed by visually recognizing the presence or absence of breakage of the bridge constituting the annular weakening portion.

特許第５５５４５７４号公報Patent No. 5554574 gazette

しかし、特許文献１に記載されたキャップでは、タンパーエビデンスバンドの内周面におけるフックの上方に、環状突起の外径より小さい内径を有し、上下方向に０．３〜０．７ｍｍ延びる嵌合下部を設けてあるため、容器口部に装着された状態のキャップを開封する際に、キャップ本体のがたつきを防止し、ひいてはブリッジが破断せずにキャップ本体が容器口部から外れる所謂すっぽ抜けをも防ぐことができ、タンパーエビデンス性が良好となる反面、開封に必要なトルクが増大し、開封が困難化する恐れがある。   However, in the cap described in Patent Document 1, a fitting having an inner diameter smaller than the outer diameter of the annular protrusion above the hook on the inner circumferential surface of the tamper evidence band and extending 0.3 to 0.7 mm in the vertical direction Since the lower portion is provided, when the cap attached to the container opening is opened, the cap main body is prevented from rattling, and consequently the cap main body is detached from the container opening without breaking the bridge. It is possible to prevent through holes and improve tamper evidence, but at the same time the torque required for opening may increase, which may make opening difficult.

本発明は上述の事柄に留意してなされたもので、その目的は、タンパーエビデンス性を良好としつつ、開栓トルクの増大をも抑えることのできる合成樹脂製キャップを提供することにある。   The present invention has been made in consideration of the above-mentioned matters, and an object thereof is to provide a synthetic resin cap which can suppress the increase in the opening torque while improving the tamper evidence property.

上記目的を達成するために、本発明に係る合成樹脂製キャップは、容器口部の外周に形成された雄ねじに螺合する雌ねじが設けられたスカート壁と、該スカート壁の下部に環状弱化部を介して連結されたタンパーエビデンスバンドとを具備したキャップであって、前記タンパーエビデンスバンドの内周側に、前記容器口部の外周に設けられた環状突起に下方から係止可能なフックが周方向に間隔をおいて複数設けられ、また、前記タンパーエビデンスバンドの内周側において、前記フックの上方には該タンパーエビデンスバンドの内側に突出する突出部が連なり、該突出部の下部には当接部が設けられ、該当接部は、前記突出部の内周面から前記フックの上面に向かって、２０度以上の勾配で内径が小さくなるように延びている（請求項１）。   In order to achieve the above object, the synthetic resin cap according to the present invention has a skirt wall provided with an internal thread screwed on an external thread formed on the outer periphery of a container opening, and an annular weakening portion at the lower part of the skirt wall. A cap provided with a tamper evidence band connected via a hook, and a hook that can be locked from below to an annular protrusion provided on the outer periphery of the container opening on the inner peripheral side of the tamper evidence band A plurality of protrusions are provided at intervals in the direction, and on the inner peripheral side of the tamper evidence band, a protrusion projecting to the inside of the tamper evidence band is continuous above the hook, and a lower portion of the protrusion is A contact portion is provided, and the contact portion extends from the inner circumferential surface of the protrusion toward the upper surface of the hook such that the inner diameter decreases with a gradient of 20 degrees or more (Claim 1)

上記合成樹脂製キャップが、前記タンパーエビデンスバンドの内周側において、前記突出部の上方に、該突出部よりも該タンパーエビデンスバンドの内側に突出し、前記容器口部の外周面に接触する突起を有していてもよい（請求項２）。   The synthetic resin cap protrudes on the inner peripheral side of the tamper evidence band above the protrusion and further inward of the tamper evidence band than the protrusion, and contacts the outer peripheral surface of the container opening. You may have (Claim 2).

本願発明では、タンパーエビデンス性を良好としつつ、開栓トルクの増大をも抑えることのできる合成樹脂製キャップが得られる。   In the present invention, it is possible to obtain a synthetic resin cap which can suppress the increase in the opening torque while making the tamper evidence property favorable.

すなわち、本願の各請求項に係る発明の合成樹脂製キャップでは、容器口部に装着されたキャップを開封する際、容器口部の環状突起の外周面に対して当接部が当接するようにしておくことにより、キャップが斜めに持ち上がることが防止され、環状弱化部が偏らずに略均一に破断するので、タンパーエビデンス性は良好となる。   That is, in the synthetic resin cap of the invention according to each claim of the present application, when the cap attached to the container opening is unsealed, the contact portion is in contact with the outer peripheral surface of the annular projection of the container opening. By setting it in this way, the cap is prevented from being lifted obliquely, and the annular weakened portion breaks almost uniformly without deviation, so that the tamper evidence property becomes good.

また、当接部の内周面には２０度以上の勾配を設けてあり、この勾配が環状突起に対する当接部の当接度合いの調整機能を発揮し、閉栓状態における突出部と環状突起との隙間が比較的大きかったり小さかったりしても、開封時に当接部が環状突起に良好に当接するように構成するのが容易となり、すっぽ抜けや開栓トルクの増大を防止することができる。   In addition, a slope of 20 degrees or more is provided on the inner peripheral surface of the contact portion, and this gradient exerts an adjusting function of the degree of contact of the contact portion with the annular projection, and the projection and the annular projection in the closed state Even if the gap between the two is relatively large or small, it is easy to configure the contact portion to be in good contact with the annular projection at the time of unsealing, and it is possible to prevent an increase in free end and opening torque. .

請求項２に係る発明の合成樹脂製キャップでは、開封の際に突起が環状突起に当接してキャップのがたつきや傾きが防止され、キャップのすっぽ抜けが防止されるという効果がより高まることになる。   In the synthetic resin cap of the invention according to the second aspect, the protrusion abuts against the annular projection at the time of unsealing, thereby preventing rattling and tilting of the cap, thereby further enhancing the effect that the end of the cap is prevented. It will be.

本発明の一実施の形態に係る合成樹脂製キャップの構成を概略的に示す縦断面図である。It is a longitudinal cross-sectional view which shows roughly the structure of the synthetic resin caps which concern on one embodiment of this invention. （Ａ）及び（Ｂ）は、開封過程の前記合成樹脂製キャップの要部の構成を概略的に示す説明図である。(A) And (B) is explanatory drawing which shows roughly the structure of the principal part of the said synthetic resin cap of an opening process. 前記合成樹脂製キャップの変形例の要部の構成を概略的に示す説明図である。It is explanatory drawing which shows roughly the structure of the principal part of the modification of the said synthetic resin cap.

本発明の実施の形態について図面を参照しながら以下に説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１に示す合成樹脂製キャップ（以下、キャップという）１は、例えばペットボトル等の図示しない容器の口部に装着されて使用されるものであり、コンプレッション成形又はインジェクション成形によって、ポリエチレンで一体的に成形されている。なお、キャップ１を形成する素材は、特に限定されるものではなく、本実施形態で用いたポリエチレンの他、ポリプロピレン等が好適に用いられる。   A synthetic resin cap (hereinafter referred to as a cap) 1 shown in FIG. 1 is used by being attached to the mouth of a container (not shown) such as a plastic bottle, for example, and integrally made of polyethylene by compression molding or injection molding. It has been molded. In addition, the raw material which forms the cap 1 is not specifically limited, In addition to the polyethylene used by this embodiment, a polypropylene etc. are used suitably.

そして、キャップ１は、平面視において略円形状の天壁２と、この天壁２の外周部から下向きに延びる略円筒状のスカート壁３を有している。ここで、スカート壁３の外周面にはローレット溝４を、内周面には雌ねじ５を設けてあり、この雌ねじ５は容器口部の外周に形成された雄ねじ（図示していない）に結合可能である。   The cap 1 has a ceiling wall 2 having a substantially circular shape in a plan view, and a skirt wall 3 having a substantially cylindrical shape extending downward from the outer peripheral portion of the ceiling wall 2. Here, a knurled groove 4 is provided on the outer peripheral surface of the skirt wall 3 and a female screw 5 is provided on the inner peripheral surface, and this female screw 5 is coupled to a male screw (not shown) formed on the outer periphery of the container opening. It is possible.

また、キャップ１は、未開封（開栓が一度もされていないこと）を証明する機能を有するピルファープルーフキャップであり、スカート壁３の下部には、スカート壁３の全周にわたって延びる環状弱化部６を介してタンパーエビデンスバンド（以下、単に「バンド」という）７を連結してある。   Also, the cap 1 is a pilfer-proof cap having a function of proving unopened (unclogging is never done), and in the lower part of the skirt wall 3, an annular weakening extending around the entire circumference of the skirt wall 3 A tamper evidence band (hereinafter simply referred to as "band") 7 is connected via part 6.

すなわち、環状弱化部６は、スカート壁３とバンド７とを上下に画するものであり、スカート壁３及びバンド７の周方向に断続して延びる（ミシン目状の）スリットと、隣り合うスリットの間に存在するブリッジとで構成され、ブリッジは所定の力で引っ張られると破断する。   That is, the annular weakening portion 6 divides the skirt wall 3 and the band 7 up and down, and (perforated) slits which extend intermittently in the circumferential direction of the skirt wall 3 and the band 7 and adjacent slits The bridge is broken when it is pulled by a predetermined force.

そして、このバンド７の内周側には、内向きに突出し、内側への突出量が上側ほど増大するように構成されたフック８を、周方向に間隔をおいて複数（例えば５個）設けてある。各フック８は、キャップ１が容器口部に装着された状態で、容器口部の外周において雄ねじよりも下方に形成された環状突起（ビード部）９（図２（Ａ）及び（Ｂ）参照）の略下側へ位置し、開封操作によって当該環状突起９に係止する。すなわち、フック８は、環状突起９に下方から係止可能に構成されている。   Then, on the inner peripheral side of the band 7, a plurality of (for example, five) hooks 8 protruding inward and configured such that the amount of inward protrusion increases toward the upper side are provided at intervals in the circumferential direction. It is Each hook 8 has an annular protrusion (bead portion) 9 (see FIGS. 2A and 2B) formed below the male screw on the outer periphery of the container opening with the cap 1 attached to the container opening. ) And is locked to the annular projection 9 by an opening operation. That is, the hook 8 is configured to be able to be locked to the annular projection 9 from below.

図２（Ａ）に示すように、バンド７の内周側において、フック８の上方には、バンド７の内側に突出する突出部１０が連なり、突出部１０の下部には環状突起９の外周面に当接する当接部１１が設けられている。なお、当接部１１の上下幅Ｌ１１は、この当接部１１を含む突出部１０全体の上下幅Ｌ１０の３分の１〜３分の２とするのが好ましく、本例では約半分（Ｌ１０を１．１７ｍｍ、Ｌ１１を０．５８ｍｍ）としてある。   As shown in FIG. 2A, on the inner peripheral side of the band 7, the projecting portion 10 projecting inward of the band 7 is continuous above the hook 8 and the outer periphery of the annular projection 9 is in the lower portion of the projecting portion 10. An abutment 11 is provided which abuts the surface. The upper and lower width L11 of the contact portion 11 is preferably one third to two thirds of the upper and lower width L10 of the entire projection 10 including the contact portion 11. In this example, about half (L10) And L11 is 0.58 mm).

また、当接部１１は、突出部１０の内周面からフック８の上面に向かって、２０度以上（好ましくは２０度〜３０度）の勾配θで内径が小さくなるように延びている。勾配θを２０度未満とすると、当接部１１が持つ環状突起９に対する当接部１１の当接度合いの調整機能が低下し、閉栓状態における突出部１０と環状突起９との隙間が比較的大きい場合には、開封時に当接部１１が環状突起９に良好に当接せずにがたつき、キャップ１が傾いてすっぽ抜けが生じる恐れがあり、逆に閉栓状態における突出部１０と環状突起９との隙間が比較的小さい場合には、当接部１１が環状突起９に強く当接してキャップ１の開封に必要なトルクが過大となる恐れがある。   Further, the contact portion 11 extends from the inner peripheral surface of the protrusion 10 toward the upper surface of the hook 8 such that the inner diameter decreases with a gradient θ of 20 degrees or more (preferably 20 degrees to 30 degrees). If the gradient θ is less than 20 degrees, the function of adjusting the degree of contact of the contact portion 11 with the annular projection 9 of the contact portion 11 is reduced, and the gap between the projection 10 and the annular projection 9 in the closed state is relatively small. If the size is large, there is a risk that the contact portion 11 does not contact the annular projection 9 well at the time of unsealing, and the cap 1 is inclined to cause tailing off. When the gap with the annular projection 9 is relatively small, the contact portion 11 strongly abuts on the annular projection 9 and the torque required for opening the cap 1 may be excessive.

上記構成からなるキャップ１は、容器口部に装着され未開封の状態では、環状突起９が突出部１０の内側またはそれより上方に位置し（図２（Ａ）に示す位置かそれよりも上方の位置）、この状態からキャップ１を開封方向に回転させると、容器口部に対してキャップ１が相対的に上昇し、図２（Ｂ）に示すように、やがて当接部１１が環状突起９に当接し、フック８が環状突起９に下方から係止する状態となる。そして、さらにキャップ１を開封方向に回転させることにより容器口部に装着されたキャップ１を開封する際、容器口部の環状突起９の外周面に対して各フック８に設けられた当接部１０が当接し、これにより、キャップ１が斜めに持ち上がることが防止され、環状弱化部６が偏らずに略均一に破断するので、タンパーエビデンス性は良好となる。なお、図２（Ｂ）には、環状突起９に係止したフック８を環状突起９に重ねて描いてあるが、実際には実体を持つ両者がこのように重なることはなく、主としてキャップ１側が容器口部に付勢されて外側に弾性変形するが、その弾性変形後の図示は省略している。   In the unopened state of the cap 1 having the above configuration attached to the container opening, the annular projection 9 is positioned inside or above the projecting portion 10 (the position shown in FIG. 2A or above) Position), when the cap 1 is rotated in the unsealing direction from this state, the cap 1 ascends relatively to the container opening, and as shown in FIG. The hook 8 is in contact with the annular projection 9 from below. Then, when the cap 1 attached to the container opening is unsealed by further rotating the cap 1 in the unsealing direction, the contact portion provided on each hook 8 with respect to the outer peripheral surface of the annular projection 9 of the container opening 10 prevents the cap 1 from being lifted obliquely, and the annular weakened portion 6 breaks almost uniformly without deviation, so that the tamper evidence is improved. In FIG. 2B, the hook 8 locked to the annular projection 9 is drawn overlapping the annular projection 9, but in actuality, both of the actual entities do not overlap in this way. The side is biased by the container opening and elastically deformed outward, but the illustration after the elastic deformation is omitted.

また、上述したように、当接部１１の内周面には２０度以上の勾配θを設けてあり、この勾配が環状突起９に対する当接部１１の当接度合いの調整機能を発揮し、閉栓状態における突出部１０と環状突起９との隙間が比較的大きかったり小さかったりしても、開封時に当接部１１が環状突起９に良好に当接するように構成するのが容易となり、すっぽ抜けや開栓トルクの増大を防止することができる。   Further, as described above, the inner circumferential surface of the contact portion 11 is provided with a gradient θ of 20 degrees or more, and this gradient exerts an adjusting function of the contact degree of the contact portion 11 with the annular projection 9 Even when the gap between the projection 10 and the annular projection 9 in the closed state is relatively large or small, it is easy to configure so that the contact portion 11 favorably contacts the annular projection 9 at the time of opening, It is possible to prevent the disengagement and the increase in the opening torque.

なお、本発明は、上記の実施の形態に何ら限定されず、本発明の要旨を逸脱しない範囲において種々に変形して実施し得ることは勿論である。例えば、以下のような変形例を挙げることができる。   The present invention is not limited to the above embodiment, and it is needless to say that the present invention can be modified in various ways without departing from the scope of the present invention. For example, the following modifications can be mentioned.

上記実施の形態では、各フック８に対応させて突出部１０及び当接部１１を設けているが、これに限らず、例えば突出部１０、当接部１１の少なくとも一方を、バンド７の周方向に連続して一周設けるようにしてもよい。   In the above embodiment, the projecting portion 10 and the contact portion 11 are provided corresponding to each hook 8, but the present invention is not limited to this. For example, at least one of the projecting portion 10 and the contact portion 11 The circuit may be provided continuously in the direction.

各当接部１１の勾配θは、画一化されていてもよいし、ばらつきをもたせてあってもよく、例えば勾配θが２０度の当接部１１を三つ、勾配θが３０度の当接部１１を二つ設ける、といったようなことも可能である。   The slope θ of each contact portion 11 may be uniform or may have variations. For example, three contact portions 11 having a gradient θ of 20 degrees and a gradient θ of 30 degrees may be provided. It is also possible to provide two abutments 11.

図３に示すように、バンド７の内周側において、突出部１０の上方で環状弱化部６よりも下方に、突出部１０よりもバンド７の内側に突出し、キャップ１を容器口部に装着した状態で容器口部（環状突起９）の外周面に接触する突起１２を設けてあってもよい。この突起１２は、バンド７の周方向に全周にわたって設けてもよいし、バンド７の周方向に間隔をあけて複数設けてもよく、後者の場合、例えばフック８に対応させて各フック８の真上に一つ又は複数ずつ設けることが考えられる。そして、このような突起１２を設けておくことにより、開封の際に突起１２が環状突起９に当接してキャップ１のがたつきや傾きが防止され、キャップ１のすっぽ抜けが防止されるという効果がより高まることになる。   As shown in FIG. 3, on the inner peripheral side of the band 7, the upper part of the projecting part 10 is protruded below the annular weakening part 6, and protrudes inside the band 7 more than the projecting part 10, and the cap 1 is attached to the container opening The projection 12 may be provided to be in contact with the outer peripheral surface of the container opening (annular projection 9) in the state where it is in the closed state. The projections 12 may be provided over the entire circumference in the circumferential direction of the band 7 or may be provided at intervals in the circumferential direction of the band 7. In the latter case, for example, each hook 8 is made to correspond to the hook 8 It is conceivable that one or more of them are provided right above. Further, by providing such a projection 12, the projection 12 abuts on the annular projection 9 at the time of unsealing to prevent the cap 1 from rattling or tilting, and the end of the cap 1 is prevented The effect will be further enhanced.

なお、上記変形例どうしを適宜組み合わせてもよいことはいうまでもない。   Needless to say, the above-described modifications may be combined as appropriate.

１ キャップ
２ 天壁
３ スカート壁
４ ローレット溝
５ 雌ねじ
６ 環状弱化部
７ バンド
８ フック
９ 環状突起
１０ 突出部
１１ 当接部
１２ 突起
θ 勾配

Reference Signs List 1 cap 2 ceiling wall 3 skirt wall 4 knurled groove 5 female screw 6 annular weakening portion 7 band 8 hook 9 annular projection 10 projection 11 contact portion 12 projection θ gradient

Claims (2)

容器口部の外周に形成された雄ねじに螺合する雌ねじが設けられたスカート壁と、該スカート壁の下部に環状弱化部を介して連結されたタンパーエビデンスバンドとを具備したキャップであって、
前記タンパーエビデンスバンドの内周側に、前記容器口部の外周に設けられた環状突起に下方から係止可能なフックが周方向に間隔をおいて複数設けられ、
また、前記タンパーエビデンスバンドの内周側において、前記フックの上方には該タンパーエビデンスバンドの内側に突出する突出部が連なり、該突出部の下部には当接部が設けられ、該当接部は、前記突出部の内周面から前記フックの上面に向かって、２０度以上の勾配で内径が小さくなるように延びていることを特徴とする合成樹脂製キャップ。A cap comprising: a skirt wall provided with an internal thread to be engaged with an external thread formed on an outer periphery of a container mouth; and a tamper evidence band connected to the lower portion of the skirt wall via an annular weakening portion,
On the inner peripheral side of the tamper evidence band, a plurality of hooks that can be locked from below are provided at intervals in the circumferential direction on the annular protrusion provided on the outer periphery of the container opening,
Further, on the inner peripheral side of the tamper evidence band, a protrusion projecting to the inside of the tamper evidence band is connected above the hook, and a contact part is provided at the lower part of the protrusion, and the contact part is A synthetic resin cap, wherein the inner diameter is reduced from the inner circumferential surface of the projecting portion toward the upper surface of the hook with a gradient of 20 degrees or more. 前記タンパーエビデンスバンドの内周側において、前記突出部の上方に、該突出部よりも該タンパーエビデンスバンドの内側に突出し、前記容器口部の外周面に接触する突起が設けられている請求項１に記載の合成樹脂製キャップ。

At the inner peripheral side of the tamper evidence band, a protrusion is provided above the protrusion and protrudes inward of the tamper evidence band relative to the protrusion and is provided in contact with the outer peripheral surface of the container opening. Synthetic resin cap as described in.

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JP2007501169A (en) * 2003-08-04 2007-01-25 アバカス （シー．アイ．）リミテッド アズ トラスティー フォー ザ ベイビュー トラスト Sealing member with a fragile band with an anti-opening function
JP2016016900A (en) * 2014-07-10 2016-02-01 日本クロージャー株式会社 Synthetic resin container lid and combination of the same and container
JP2017036081A (en) * 2015-08-12 2017-02-16 株式会社Ｃｓｉジャパン Synthetic resin cap, closing device, and closing device containing beverage

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EG21314A (en) * 1992-07-16 2000-10-31 Driutt Rodney Malcolm Tamper evident closure
TR199902714T1 (en) * 1998-03-03 2000-09-21 Schellenbach Frank There's a warranty tape that comes off, and a ring-shaped plastic cover that contains a sealant.
WO2005077777A1 (en) * 2004-02-18 2005-08-25 Abacus (C.I.) Limited As Trustee Of The Bayview Trust Closure with frangible tamper-evident band

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Publication number Priority date Publication date Assignee Title
JP2007501169A (en) * 2003-08-04 2007-01-25 アバカス （シー．アイ．）リミテッド アズ トラスティー フォー ザ ベイビュー トラスト Sealing member with a fragile band with an anti-opening function
JP2016016900A (en) * 2014-07-10 2016-02-01 日本クロージャー株式会社 Synthetic resin container lid and combination of the same and container
JP2017036081A (en) * 2015-08-12 2017-02-16 株式会社Ｃｓｉジャパン Synthetic resin cap, closing device, and closing device containing beverage

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