JPH0699999A - Resin cap having pilfer-proof property - Google Patents

Resin cap having pilfer-proof property

Info

Publication number
JPH0699999A
JPH0699999A JP4243302A JP24330292A JPH0699999A JP H0699999 A JPH0699999 A JP H0699999A JP 4243302 A JP4243302 A JP 4243302A JP 24330292 A JP24330292 A JP 24330292A JP H0699999 A JPH0699999 A JP H0699999A
Authority
JP
Japan
Prior art keywords
band
cap
peripheral
circumferential
piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4243302A
Other languages
Japanese (ja)
Other versions
JP3046153B2 (en
Inventor
Kashiwa Murayama
柏 村山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Closures Co Ltd
Original Assignee
Japan Crown Cork Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Crown Cork Co Ltd filed Critical Japan Crown Cork Co Ltd
Priority to JP4243302A priority Critical patent/JP3046153B2/en
Publication of JPH0699999A publication Critical patent/JPH0699999A/en
Application granted granted Critical
Publication of JP3046153B2 publication Critical patent/JP3046153B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges

Landscapes

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

Abstract

PURPOSE:To prevent a cap from slipping off together with a peripheral band in opening by providing the peripheral band on the lower end of a cylindrical skirt portion through a weakened portion, providing a upturned peripheral flap on the inner wall of the band, and providing a peripheral curl portion formed by being folded so that its tip end may be overlapped on a root portion of the peripheral flap on the lower end of the band. CONSTITUTION:In a resin cap, a top panel 2 and a cylindrical skirt portion 3 hanging from the periphery of the top panel 2 are provided, and a peripheral band 5 is provided on the lower end of the skirt portion 3 through a weakened line 4, moreover an upturned peripheral flap 6 to be locked on a jaw portion 10 formed on a container opening portion is provided on the inner surface of the band 5. Moreover a peripheral curl portion 7 formed by folding the lower end of the band 5 inwardly, whose tip end is overlapped on the root portion of a peripheral flap 6, is provided on the lower side of the peripheral flap 6. Therefore, the locking of the peripheral band on the container opening portion can be reinforced in opening of the cap, thereby slipping-off of the cap together with the peripheral band can be effectively prevented, so that pilfer-proof property is sufficiently achieved.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、ピルファープルーフ特
性を有する樹脂製キャップに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin cap having pill fur proof characteristics.

【０００２】[0002]

【従来の技術】ピルファープルーフ特性を有する樹脂製
キャップとして、天面と天面周縁部から垂下した筒状ス
カート部とを有し、該筒状スカート部下端に弱化線を介
して周状バンドが設けられ、該周状バンド部の内面に
は、容器口部に形成されているあご部と係合する上向き
の周状片が設けられている樹脂製キャップが従来から実
用に供されている。このキャップにおいては、周状バン
ド部が前記周状片によって容器口部に固定されており、
開栓に際して前記弱化線での破断を生じ、周状バンド部
のみが容器口部に残存することによりピルファープルー
フ機能を発揮するものである。2. Description of the Related Art As a resin cap having a pill fur proof characteristic, it has a top surface and a cylindrical skirt portion hanging down from a peripheral portion of the top surface, and a circumferential band is formed at the lower end of the cylindrical skirt portion through a weakening line. Conventionally, a resin cap in which an upwardly facing circumferential piece that engages with a jaw formed at the container mouth is provided on the inner surface of the circumferential band portion is provided for practical use. . In this cap, the circumferential band portion is fixed to the container mouth portion by the circumferential piece,
When the stopper is opened, breakage occurs along the weakening line, and only the circumferential band portion remains at the container mouth portion, thereby exhibiting a pill fur proof function.

【０００３】[0003]

【発明が解決しようとする課題】然しながら、上記のキ
ャップにおいては、容器口部のあご部と周状バンドとの
係合は周状片のみによって行われているため、その係合
力が十分でない。例えば周状バンドを巻いて固定し、弱
化線が破断しないようにキャップを周状バンドごと容器
口部からすっぽ抜いてしまうことができ、また温度条件
やボトル精度等の条件によっても、キャップが周状バン
ドごと容器口部からすっぽ抜けてしまうという問題があ
る。さらには、周状バンド下端と容器口部との間に若干
の間隙が形成されているために、この隙間に適当な工具
を差し込んでキャップを周状バンドごと容器口部から取
り外すことも可能であり、ピルファープルーフ機能にお
いて十分に満足し得るものではなかった。However, in the above cap, the engagement between the jaw of the container opening and the circumferential band is performed only by the circumferential piece, and therefore the engaging force is not sufficient. For example, by winding and fixing the circumferential band, the cap can be pulled out from the container mouth together with the circumferential band so that the weakening line does not break, and the cap may also be removed depending on conditions such as temperature conditions and bottle accuracy. There is a problem in that the entire circumferential band comes out of the mouth of the container. Furthermore, since a slight gap is formed between the lower end of the circumferential band and the container mouth, it is possible to insert an appropriate tool into this gap and remove the cap together with the circumferential band from the container mouth. However, it was not fully satisfactory in the pill fur proof function.

【０００４】また特開平２−２９６６６６号公報には、
周状バンド部に上向きの可撓タブを設け、周状バンド部
下端に内方に突出した干渉ビードを設けたキャップが開
示されている。この先行技術のキャップは、従来のもの
と比較して、可撓タブと干渉ビードとの共働作用によ
り、容器口部に形成されたあご部と周状バンドとの係合
力を高めるものであり、上述した開栓に際してのすっぽ
抜けが有効に防止され、また干渉ビードにより周状バン
ド部下端と容器口部との間の空間が埋められるという点
で意義深いものである。Further, Japanese Patent Laid-Open No. 2-296666 discloses that
Disclosed is a cap in which an upward flexible tab is provided on the circumferential band portion and an interference bead protruding inward is provided on a lower end of the circumferential band portion. This prior art cap enhances the engaging force between the jaw and the circumferential band formed on the container mouth by the synergistic action of the flexible tab and the interference bead as compared with the conventional cap. It is significant in that the above-mentioned opening of the cap at the time of opening is effectively prevented, and the space between the lower end of the circumferential band portion and the container mouth is filled with the interference bead.

【０００５】しかし、このキャップでは、周状バンドの
内側に可撓タブと干渉ビードとの２つの突起物が形成さ
れているため、その成形が非常に困難であるとともに、
寸法上の制約を受けるという問題がある。即ち、この種
のキャップは、通常金型を用いての射出成形等の一体成
形により製造されるものであるが、このキャップの場合
では、その周状バンドの形状からいって、成形終了後に
金型から成形物を離脱させることが極めて難しいのであ
る。事実、この先行技術には、キャップの成形手段につ
いては何らの開示も認められない。また成形性の面から
寸法上の制約を受けるために突起物を大きくすることが
できず、上記問題点を十分に解決するまでに至っていな
いのである。However, in this cap, since the two protrusions of the flexible tab and the interference bead are formed inside the circumferential band, the molding thereof is very difficult and
There is a problem of being restricted in size. That is, this type of cap is usually manufactured by integral molding such as injection molding using a mold, but in the case of this cap, the shape of the circumferential band indicates that the cap is not It is extremely difficult to separate the molded product from the mold. In fact, this prior art does not allow any disclosure of means for forming the cap. Further, the projections cannot be made large due to dimensional restrictions from the aspect of formability, and the above problems have not been sufficiently solved.

【０００６】従って本発明の目的は、周状バンドと容器
口部との係合力が極めて高く、開封に際しての周状バン
ドごとのすっぽ抜けが有効に防止され、しかも周状バン
ド部下端と容器口部との間に形成される空間を利用して
のイタズラを有効に防止し得るピルファープルーフ機能
を有する樹脂製キャップを提供することにある。本発明
の他の目的は、極めて簡単な成形手段によって成形する
ことが可能な前記樹脂キャップを提供することにある。Therefore, an object of the present invention is that the engaging force between the circumferential band and the mouth portion of the container is extremely high, the slip-out of each circumferential band when opening is effectively prevented, and the lower end of the circumferential band part and the container are effectively prevented. (EN) It is intended to provide a resin cap having a pill fur proof function capable of effectively preventing a mischief utilizing a space formed between the mouth portion and the mouth. Another object of the present invention is to provide the resin cap that can be molded by an extremely simple molding means.

【０００７】[0007]

【課題を解決するための手段】本発明によれば、天面と
天面周縁部から垂下した筒状スカート部とを有し、該筒
状スカート部下端に弱化線を介して周状バンドが設けら
れ、該周状バンド部の内面には、容器口部に形成されて
いるあご部と係合する上向きの周状片が設けられている
樹脂製キャップにおいて、前記周状片の下側には、周状
バンド下端部の内側への折り返しにより形成され且つそ
の先端部が前記周状片の根本部と重なりあうような周状
カール部が設けられていることを特徴とするピルファー
プルーフ特性を有する樹脂製キャップが提供される。According to the present invention, a circumferential band having a top surface and a cylindrical skirt portion hanging down from a peripheral portion of the top surface is formed, and a circumferential band is formed at a lower end of the cylindrical skirt portion through a weakening line. In the resin cap, provided on the inner surface of the circumferential band portion, the upward circumferential piece that engages with the jaw portion formed in the container mouth is provided. The pill fur proof characteristic is characterized in that a circumferential curl portion is formed by folding back the lower end portion of the circumferential band inward, and the tip end portion thereof overlaps the root portion of the circumferential strip. There is provided a resin cap having:

【０００８】[0008]

【作用】本発明の樹脂製キャップは、周状バンドの下端
部に、折り返しにより形成された周状カール部を設ける
ことが顕著な特徴である。即ち、この周状カール部が、
周状バンド下端と容器口部との間の空間を埋めるため、
該空間を利用してのイタズラが有効に防止される。さら
に上記の周状カール部は、その先端部分が周状片の根本
部と重なりあうように設けられているため、これが周状
片と容器あご部との係合を補強し、開栓に際しての周状
バンドのすっぽ抜けを有効に回避することが可能とな
る。The resin cap of the present invention is characterized in that a circumferential curl portion formed by folding back is provided at the lower end portion of the circumferential band. That is, this circumferential curl portion
To fill the space between the lower end of the circumferential band and the container mouth,
Mischief using the space is effectively prevented. Further, since the above-mentioned circumferential curl portion is provided so that the tip end portion thereof overlaps with the root portion of the circumferential piece, this reinforces the engagement between the circumferential piece and the container jaw portion, and at the time of opening the cap. It is possible to effectively avoid the slip-out of the circumferential band.

【０００９】しかもこの周状カール部は、例えば射出成
形により周状片に対応する片が一体的に形成された周状
バンドを有するキャップを成形した後、該片及び周状バ
ンド下端を２次加工により折り返すことによって、極め
て容易に成形することができる。In addition, the circumferential curl portion is formed by molding a cap having a circumferential band integrally formed with a piece corresponding to the circumferential piece by, for example, injection molding, and then the piece and the lower end of the circumferential band are secondary. By folding back by processing, it can be molded extremely easily.

【００１０】[0010]

【実施例】本発明を以下添付図面に示す具体例に基づい
て詳細に説明する。図１は、本発明のキャップの一部断
面側面図を示し、図２は、このキャップが容器口部に嵌
合している状態を示す。この図において、キャップ（全
体として１で示す）は、天面２と、天面２の周縁部から
垂下した筒状スカート部３とを有している。また該スカ
ート部３の下端には、弱化線４を介して周状バンド５が
設けられている。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on specific examples shown in the accompanying drawings. FIG. 1 shows a partial cross-sectional side view of the cap of the present invention, and FIG. 2 shows a state in which the cap is fitted in the container mouth. In this figure, a cap (generally designated by 1) has a top surface 2 and a cylindrical skirt portion 3 depending from the peripheral portion of the top surface 2. A circumferential band 5 is provided at the lower end of the skirt portion 3 via a weakening line 4.

【００１１】周状バンド５の内面には、周状片６が設け
られている。この周状片６は上向きであり、容器のあご
部１０の下側に位置している。本発明においては、周状
バンド５の下端に、該下端部の折り返しにより形成され
た周状カール部７が設けられており、この周状カール部
７の先端部は、上記周状片６の根本部と重なり合うよう
に位置している。A circumferential piece 6 is provided on the inner surface of the circumferential band 5. This circumferential piece 6 is facing upwards and is located below the jaw 10 of the container. In the present invention, a circumferential curl portion 7 formed by folding back the lower end portion is provided at the lower end of the circumferential band 5, and the tip end portion of the circumferential curl portion 7 corresponds to that of the circumferential piece 6. It is located so that it overlaps with the root.

【００１２】図３には、上記のキャップ１を、容器から
開栓する状態の一例を示す。即ち、図２及び図３から明
らかな通り、キャップ１を旋回して開栓していくと、前
記周状片６は容器のあご部１０に当接して通常は弱化線
４が切れるが、切れない場合においてもさらに引き上げ
ると該周状片６は屈曲し、この屈曲した周状片６は、周
状カール部７によってしっかりと固定されており、周状
片６のそれ以上の変形、伸び等が有効に防止されている
ことが理解される（特に図３参照）。従って、周状片６
と容器あご部１０との係合が補強され、開栓に際して周
状バンド５は容器口部にしっかりと固定され、弱化線４
の破断がスムーズに進行する。かくして、開栓に際し
て、キャップ１が周状バンドごとすっぽ抜けるというト
ラブルが有効に回避されるのである。しかも、周状カー
ル部７は、周状バンド５と容器口部との間の空間を閉塞
しているので、この空間への工具等の挿入を防止してい
ることも理解されよう。FIG. 3 shows an example of a state in which the cap 1 is opened from the container. That is, as is apparent from FIGS. 2 and 3, when the cap 1 is swung to open the cap 1, the circumferential piece 6 comes into contact with the jaw portion 10 of the container and the weakening line 4 is normally cut, but Even when the peripheral piece 6 is not pulled up, the peripheral piece 6 bends further, and the bent peripheral piece 6 is firmly fixed by the peripheral curl portion 7, so that the peripheral piece 6 is further deformed and stretched. Is effectively prevented (see especially FIG. 3). Therefore, the circumferential piece 6
And the container jaw portion 10 are reinforced, the circumferential band 5 is firmly fixed to the container mouth portion when opening, and the weakening line 4
Breakage progresses smoothly. Thus, when the cap is opened, the problem that the cap 1 is completely pulled out together with the circumferential band is effectively avoided. Moreover, since the circumferential curl portion 7 closes the space between the circumferential band 5 and the container mouth portion, it can be understood that the tool or the like is prevented from being inserted into this space.

【００１３】また本発明においては、前記周状片６に切
欠を設けることもできる。このような切欠が周状片６に
設けられているキャップ１の底面図を図４に示す。図４
から明らかな通り、この態様のキャップ１では、周状片
６には一定間隔で切欠８が設けられており、この切欠８
は、その先端部分が周状片６の付け根部から若干の間隔
をあけるようにして形成されている。Further, in the present invention, the peripheral piece 6 may be provided with a notch. FIG. 4 shows a bottom view of the cap 1 in which such a notch is provided in the circumferential piece 6. Figure 4
As is clear from the above, in the cap 1 of this aspect, the circumferential piece 6 is provided with the notches 8 at regular intervals.
Is formed such that its tip portion is slightly spaced from the root of the circumferential piece 6.

【００１４】このキャップ１では、上記のような間隙が
形成されているため、容器のあご部１０に当接しての周
状片６の屈曲に際して、該周状片６は横に寝た状態とな
りやすく、したがって容器口部に対する密着性が極めて
良好となり、キャップの開栓に際して密封性の破壊に先
立ち弱化線４の破断を初期の時点で行うことができるよ
うになる。In the cap 1, since the above-mentioned gap is formed, when the circumferential piece 6 is bent by contacting the jaw portion 10 of the container, the circumferential piece 6 is laid sideways. Therefore, the adhesion to the container opening is very good, and the weakening line 4 can be ruptured at the initial stage before the sealing is broken when the cap is opened.

【００１５】上述した本発明のキャップは、ポリエチレ
ン、ポリプロピレン等の各種熱可塑性樹脂を射出成形
し、次いで得られた成形体について２次加工を行うこと
によって容易に製造することができる。即ち、図５に示
す様な形状の成形体を射出成形によって得るが、この成
形体においては、型抜きのために、周状片６に対応する
部分６’は下向きとなっており、また周状カール部は形
成されておらず、周状バンド５の下端部７’は実質上ス
トレートな状態にある。この成形体をダイに固定し、周
状片６に対応する部分６’を折り返し、続いて適当な温
度に加熱されたパンチを用いてのパンチング等の２次加
工を行うことによって、上記周状バンド５の下端部７’
の部分をカール加工することによって本発明のキャップ
を得ることができる。The above-described cap of the present invention can be easily manufactured by injection-molding various thermoplastic resins such as polyethylene and polypropylene, and then subjecting the obtained molded body to secondary processing. That is, a molded body having a shape as shown in FIG. 5 is obtained by injection molding. In this molded body, the portion 6'corresponding to the circumferential piece 6 is directed downward and the peripheral portion is removed due to die cutting. No curled portion is formed, and the lower end portion 7'of the circumferential band 5 is substantially straight. By fixing this molded body to a die, folding back the portion 6'corresponding to the peripheral piece 6, and then performing secondary processing such as punching using a punch heated to an appropriate temperature, the peripheral shape is obtained. Lower end 7'of band 5
The cap of the present invention can be obtained by curling the portion.

【００１６】[0016]

【発明の効果】本発明によれば、キャップの開栓に際し
て、周状バンドのすっぽ抜けが有効に回避され、ピルフ
ァープルーフ機能が十分に発揮され、温水、温風やテー
プを利用しての開栓に対しても抵抗性が極めて強い。ま
た周状バンドの下端と容器口部との間の空間も閉塞され
ているので、工具を使ってのイタズラも有効に防止する
ことができる。EFFECTS OF THE INVENTION According to the present invention, when the cap is opened, the slip-off of the circumferential band is effectively avoided, the pill fur proof function is sufficiently exerted, and hot water, hot air or tape is used. It is also extremely resistant to the opening of. Further, since the space between the lower end of the circumferential band and the container mouth is closed, it is possible to effectively prevent mischief using a tool.

【図面の簡単な説明】[Brief description of drawings]

【図１】 本発明のキャップの一部断面側面図。FIG. 1 is a partial cross-sectional side view of a cap of the present invention.

【図２】 図１のキャップが容器口部に装着されている
状態を示す図。FIG. 2 is a diagram showing a state in which the cap of FIG. 1 is attached to a container mouth.

【図３】 図２のキャップの開栓状態における状態を示
す図。FIG. 3 is a diagram showing a state in which the cap of FIG. 2 is opened.

【図４】 本発明のキャップの他の態様の底面図。FIG. 4 is a bottom view of another aspect of the cap of the present invention.

【図５】 本発明のキャップの２次加工前の状態を示す
図。FIG. 5 is a diagram showing a state before secondary processing of the cap of the present invention.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 天面と天面周縁部から垂下した筒状スカ
ート部とを有し、該筒状スカート部下端に弱化線を介し
て周状バンドが設けられ、該周状バンド部の内面には、
容器口部に形成されているあご部と係合する上向きの周
状片が設けられている樹脂製キャップにおいて、 前記周状片の下側には、周状バンド下端部の内側への折
り返しにより形成され且つその先端部が前記周状片の根
本部と重なりあうような周状カール部が設けられている
ことを特徴とするピルファープルーフ特性を有する樹脂
製キャップ。1. A top surface and a tubular skirt portion hanging from a peripheral portion of the top surface, and a circumferential band is provided at a lower end of the tubular skirt through a weakening line, and an inner surface of the circumferential band portion. Has
In a resin cap provided with an upward circumferential piece that engages with a jaw portion formed in a container mouth, a lower side of the circumferential piece is folded back to the inside of the lower end of the circumferential band. A resin cap having a pill fur proof characteristic, which is provided with a circumferential curl portion which is formed and whose tip portion overlaps the root portion of the circumferential piece.
JP4243302A 1992-09-11 1992-09-11 Resin cap with pill fur proof characteristics Expired - Fee Related JP3046153B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4243302A JP3046153B2 (en) 1992-09-11 1992-09-11 Resin cap with pill fur proof characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4243302A JP3046153B2 (en) 1992-09-11 1992-09-11 Resin cap with pill fur proof characteristics

Publications (2)

Publication Number Publication Date
JPH0699999A true JPH0699999A (en) 1994-04-12
JP3046153B2 JP3046153B2 (en) 2000-05-29

Family

ID=17101816

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4243302A Expired - Fee Related JP3046153B2 (en) 1992-09-11 1992-09-11 Resin cap with pill fur proof characteristics

Country Status (1)

Country Link
JP (1) JP3046153B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006341924A (en) * 2005-05-10 2006-12-21 Nihon Yamamura Glass Co Ltd Pilfer-proof cap and container with pilfer-proof cap
JP2009280236A (en) * 2008-05-22 2009-12-03 Fuji Techno Survey Kk Bottle container

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006341924A (en) * 2005-05-10 2006-12-21 Nihon Yamamura Glass Co Ltd Pilfer-proof cap and container with pilfer-proof cap
JP2009280236A (en) * 2008-05-22 2009-12-03 Fuji Techno Survey Kk Bottle container

Also Published As

Publication number Publication date
JP3046153B2 (en) 2000-05-29

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