JP2016204010A - Cap with check valve and container to which cap is attached - Google Patents

Cap with check valve and container to which cap is attached Download PDF

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JP2016204010A
JP2016204010A JP2015085923A JP2015085923A JP2016204010A JP 2016204010 A JP2016204010 A JP 2016204010A JP 2015085923 A JP2015085923 A JP 2015085923A JP 2015085923 A JP2015085923 A JP 2015085923A JP 2016204010 A JP2016204010 A JP 2016204010A
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cap
backflow prevention
prevention valve
container
inner cap
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JP6575122B2 (en
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齋藤 剛史
Takashi Saito
剛史 齋藤
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Toppan Inc
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Toppan Printing Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a pouring cap comprising a check valve function which has a function for preventing opening for dishonest purposes, which is produced inexpensively, has high durability, and can be easily used.SOLUTION: A cap with a check valve comprises: a check valve (1); an inner cap (4); and an outer cap (5) for covering the inner cap. The inner cap can be screwed to a screw part formed on an outer periphery of a mouth part of a container body. An outer periphery of the inner cap and an inner periphery of the outer cap comprise, respectively, a screw part (321) where the inner cap and the outer cap are screwed. The check valve is configured so that a notch is formed on a sheet-state member.SELECTED DRAWING: Figure 1

Description

本発明は、主として、ソース、ケチャップ、マヨネーズ、生クリーム、練り歯磨き粉、シャンプー、リンス、糊、インキ、など、低粘度から高粘度の各種液体からなる内容物を収納する容器に用いられる逆流防止弁付き容器であって、胴部を押圧または胴部を傾けることでで、容易に容器から内容物を注出可能であると共に、胴部の押圧または胴部を傾けることを止めれば、注出口を閉鎖し、容器内部への空気の流入等を止める逆流防止弁体機能を有する注出口、及びその注出口を有する容器に関する。   The present invention mainly relates to a backflow prevention valve used for a container for storing contents composed of various liquids having a low viscosity to a high viscosity such as sauce, ketchup, mayonnaise, fresh cream, toothpaste, shampoo, rinse, glue, ink, etc. The container can be easily discharged from the container by pressing the body part or tilting the body part. The present invention relates to a spout having a backflow prevention valve body function that closes and stops the inflow of air into the container, and a container having the spout.

ソース、ケチャップ、マヨネーズ、生クリームのような食品分野や、練り歯磨き粉、ハンドクリーム、シャンプー、リンス、糊、インキのような非食品分野における比較的粘度の高い内容物は容器を開口して内容物を注出したり、頻繁に注出口を閉める行為は、煩雑であり、面倒な行為である。
特に螺合するキャップなどは、内容物が付着すると、開閉のトルクが異常に高くなるなどの問題が発生しやすい。
そして、開口した状態で容器を放置すると、内容物が酸化劣化し、カビなどが発生して、変質や腐敗、変色などを引き起こしたり、水分が抜けて、粘度が上昇し、内容物が固化するなどの問題も発生する。
For food fields such as sauces, ketchup, mayonnaise, whipped cream and non-food fields such as toothpaste, hand cream, shampoo, rinse, glue, ink, etc. The action of pouring out or frequently closing the spout is a cumbersome and troublesome action.
In particular, when the contents are attached to a screwed cap or the like, problems such as abnormally high opening / closing torque tend to occur.
If the container is left in an open state, the contents are oxidized and deteriorated, causing mold and the like, causing deterioration, decay, discoloration, etc., and moisture is lost, the viscosity increases, and the contents solidify. Such problems also occur.

アルミニウムや鉛などの金属でできていた押出しチューブであれば、内容物を注出後、復元する力がなかったので、空気が逆流して内部に入る問題もなかった。しかし、容器に穴が開きやすいなど、金属製押出しチューブは信頼性や使い勝手が悪い問題があった。その為、使用に際して穴が開いたりせず、使い勝手が良く、生産性も高いプラスチックを主たる材料にした押出し容器が主流になってきている。   In the case of an extruded tube made of a metal such as aluminum or lead, there was no problem of restoring air after pouring out the contents, so there was no problem of air going back into the interior. However, metal extruded tubes have problems such as poor reliability and ease of use, such as easy opening of holes in containers. For this reason, extrusion containers made of plastic as the main material, which do not have holes in use, are easy to use, and have high productivity, are becoming mainstream.

しかし、プラスチックを主たる材料で製造されている押出し容器は、容器の復元性が高いので、胴部を押して内容物を注出した直後に、容器の復元性が利いて、容器内部に外から空気が侵入する問題がある。
容器内部に外から空気が侵入すると、内容物が酸化劣化しやすく、変質する問題があった。
However, the extrudate container made of plastic as the main material has high resilience of the container. There is a problem that intrudes.
When air enters the inside of the container from the outside, there is a problem that the contents are easily oxidized and deteriorated.

このような問題に対し、特許文献1では、圧搾可能な胴部より口頚部を起立させるとともに、口頚部の開口部分に掛け渡した頂板に注出口を穿設してなる合成樹脂製の容器本体と、口頚部外周に嵌合させた周壁上端縁より頂壁を延設するとともに、頂壁を貫通して注出用のノズルを立設してなる合成樹脂製の注出栓とを備え、ノズル内面下端部より突設した弾性屈曲片を介して、注出口周囲の頂板上面に周縁部を圧接した弁板を、一体に延設してなることを特徴とするチューブ容器を提案している。   With respect to such a problem, in Patent Document 1, the mouth and neck portion is raised from the squeezable body portion, and a container body made of a synthetic resin is formed by drilling a spout on a top plate spanning the opening portion of the mouth and neck portion. And a top wall extending from the upper end edge of the peripheral wall fitted to the outer periphery of the neck and neck, and a pouring stopper made of synthetic resin that is provided with a nozzle for pouring through the top wall, A tube container is proposed in which a valve plate having a peripheral edge pressed against the top plate upper surface around the spout is integrally extended through an elastic bent piece protruding from the lower end of the inner surface of the nozzle. .

このような弁板を持つ注出栓は、再開封時の転倒などによって開いてしまった時に、逆流防止弁上に内容物が溜まってしまう事を防止する構造になっているが、このような注出栓は形状が複雑であり、弁体と一体的に射出成形によって成形されるので、製造コストが高く、柔軟性、弾性、耐内容物の環境ストレスクラック強度(ESCR)などを満たす材料を必要とし、難しい問題がある。さらに、不正開封防止機能がないので、店頭で開封されてしまうおそれがある。また、容器が倒れた時に弁体が開いてしまい、内容物がこぼれてしまうという問題があった。   The spout with such a valve plate has a structure that prevents the contents from accumulating on the backflow prevention valve when it is opened due to a fall or the like during resealing. The spout has a complicated shape and is molded by injection molding integrally with the valve body. Therefore, a material with high manufacturing cost, flexibility, elasticity, and environmental stress crack strength (ESCR) of contents is required. Necessary and difficult problems. Furthermore, since there is no unauthorized opening prevention function, there is a possibility that it will be opened at the store. In addition, there is a problem that when the container falls down, the valve body opens and the contents spill out.

特開2001−301779号公報JP 2001-301777 A

そこで上記問題に鑑み、不正開封防止機能付きの安価で耐久性が高く、使い易い逆流防止弁体機能を有する注出用キャップを得ることが、本発明の課題である。   Therefore, in view of the above problem, it is an object of the present invention to obtain a pouring cap having an inexpensive and highly durable backflow prevention valve body function with an unauthorized opening prevention function.

本発明は、逆流防止弁と、内キャップと、内キャップを覆う外キャップとからなる逆流防止弁付きキャップにおいて、前記内キャップは容器本体口部外周に形成されたネジ部に螺合可能であり、内キャップ外周と外キャップ内周に、内キャップと外キャップとが螺合するネジ部を有し、逆流防止弁は、シート状の部材に切込みが入れられていることを特徴とする逆流防止弁付きキャップである。   The present invention is a cap with a backflow prevention valve comprising a backflow prevention valve, an inner cap, and an outer cap that covers the inner cap, wherein the inner cap can be screwed into a screw portion formed on the outer periphery of the container body mouth portion. The backflow prevention valve has a threaded portion in which the inner cap and the outer cap are screwed on the inner cap outer periphery and the outer cap inner periphery, and the backflow prevention valve is cut into a sheet-like member. It is a cap with a valve.

本発明の逆流防止弁付き容器は、外キャップを閉じた時に、外側から弁体を押さえるので、容器が倒れた場合にも、弁体が開いて内容物がこぼれてしまうおそれが無い。
また、内キャップが口部に螺合しているので、誤って内キャップを外し、逆流防止弁が取れてしまうおそれも無い。
また、逆流防止弁を内キャップと別体で製造されるので、弁体としての機能を重視した材料選定が可能であり、安価で、生産性が高く、耐久性も高い逆流防止機能のある容器を得ることが出来る。
Since the container with the backflow prevention valve of the present invention holds the valve body from the outside when the outer cap is closed, there is no risk that the valve body will open and the contents will be spilled even when the container falls down.
Moreover, since the inner cap is screwed into the mouth portion, there is no possibility that the inner cap is removed by mistake and the backflow prevention valve is removed.
In addition, since the backflow prevention valve is manufactured separately from the inner cap, it is possible to select a material that emphasizes the function of the valve body, and it is inexpensive, highly productive and highly durable with a backflow prevention function. Can be obtained.

本発明の逆流防止弁付き容器の一例で、外観斜視図と縦断面図である。It is an example of the container with a backflow prevention valve of this invention, and is an external appearance perspective view and a longitudinal cross-sectional view. 本発明の逆流防止弁付き容器の外キャップを開封する工程を表す口部近傍の断面図である。It is sectional drawing of the opening part vicinity showing the process of opening the outer cap of the container with a backflow prevention valve of this invention. 本発明の逆流防止弁付き容器の閉鎖板を開封し、注出可能な状態になった口部近傍の断面図と、その容器の外キャップを閉めて弁体を押さえた状態を示す断面図である。FIG. 5 is a cross-sectional view of the vicinity of the mouth portion where the closing plate of the container with a backflow prevention valve of the present invention is opened and can be poured out, and a cross-sectional view showing a state where the outer cap of the container is closed and the valve body is pressed is there. 本発明の逆流防止弁付き容器における注出状態を示す断面図と、逆流防止弁体の一例を示す斜視図である。It is sectional drawing which shows the extraction state in the container with a backflow prevention valve of this invention, and a perspective view which shows an example of a backflow prevention valve body.

以下、本発明の逆流防止弁付き容器について、図を用いて詳細に説明する。
図1は、本発明の逆流防止弁付き容器の一例で、外観斜視図と縦断面図である。
図1−1に本発明の一例における外観を斜視図で示した。
この容器は、端部に口部3を設け弾性を有する容器本体2と、外気の流入を阻止する逆流防止弁と、逆流防止弁が固定された内キャップ4と、内キャップを覆う外キャップ5とからなる弾性を有する容器として、押出しチューブ容器とした。もちろん、胴部21が可撓性の高い軟質のブロー成形容器であってもかまわないし、ブロー成形チューブ容器やインジェクションブロー成形容器であってもかまわない。
Hereinafter, the container with a backflow prevention valve of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an external perspective view and a longitudinal sectional view showing an example of a container with a check valve according to the present invention.
FIG. 1-1 is a perspective view showing the appearance of an example of the present invention.
This container has a container body 2 having an opening 3 at its end and having elasticity, a backflow prevention valve for blocking the inflow of outside air, an inner cap 4 to which the backflow prevention valve is fixed, and an outer cap 5 for covering the inner cap. An extruded tube container was used as an elastic container composed of Of course, the body portion 21 may be a soft flexible blow molded container, or a blow molded tube container or an injection blow molded container.

図1−2にその断面を示した。
容器本体2の端部に設けた口部3には、可動可能な軟質の弁体を有する逆流防止弁1を取り付け、それを口部3と内キャップ4で押さえて、固定している。
逆流防止弁1は、内側から外側へ内容物を注出することはできるが、閉じて空気等が容器内部に入ることを防止する機能を有している。
この図のように、口部3の注出口に注出天板部31を設け、注出天板部31で内キャップと逆流防止弁1を挟むのが好ましいが、内キャップや口部に逆流防止弁を融着する構造で
も良い。
The cross section is shown in FIG.
A backflow prevention valve 1 having a movable soft valve body is attached to the mouth portion 3 provided at the end of the container body 2, and is fixed by pressing it with the mouth portion 3 and the inner cap 4.
The backflow prevention valve 1 can pour the contents from the inside to the outside, but has a function of closing and preventing air or the like from entering the container.
As shown in this figure, it is preferable that a pouring top plate portion 31 is provided at the spout of the mouth portion 3 and the inner cap and the backflow prevention valve 1 are sandwiched between the pouring top plate portion 31, but the back flow flows into the inner cap and the mouth portion. A structure in which the prevention valve is fused may be used.

また、内キャップ4内側面と口部3外側面とは、互いに螺合するネジ部を有し、かつ、口部外周根元と内キャップ下端近傍とにラチェット構造を設けている。
内キャップ4の注出部にはプルリング421を有する閉鎖板42が設けられていて、未開封時には周囲を薄肉線422で接続している。
Moreover, the inner side surface of the inner cap 4 and the outer side surface of the mouth part 3 have screw parts that are screwed together, and a ratchet structure is provided at the mouth part outer periphery root and in the vicinity of the lower end of the inner cap.
A closing plate 42 having a pull ring 421 is provided at the pouring portion of the inner cap 4, and the periphery is connected by a thin wire 422 when not opened.

内キャップ外周側面と外キャップ内周側面にも、互いに螺合するネジ部を有している。また、外キャップの下端には脆弱部で繋がったタンパーエビデントバンド51を設け、内キャップ外周下端近傍に設けた係合リング43に係合し、開封時にはタンパーエビデントバンドと外キャップとの接続部である脆弱部がちぎれる構造になっている。この構造により、開封状態と未開封状態を判別できるようになっている。さらに、外キャップ天板内面に押し当て突起52が設けられている。この押し当て突起52の先端は未開封の時には閉鎖板42の上側に位置している。しかし、外キャップが開封され、タンパーエビデントバンド51と閉鎖板42が抜き取られた状態で外キャップ5を締めた時には、逆流防止弁1の上面に接触し、逆流防止弁の開口を防止する。   The inner cap outer peripheral side surface and the outer cap inner peripheral side surface also have screw portions that are screwed together. In addition, a tamper evidence band 51 connected by a fragile portion is provided at the lower end of the outer cap, and engages with an engagement ring 43 provided near the lower end of the inner cap outer periphery. The weak part which is the part is torn off. With this structure, the opened state and the unopened state can be discriminated. Further, a pressing projection 52 is provided on the inner surface of the outer cap top plate. The tip of the pressing protrusion 52 is positioned above the closing plate 42 when not opened. However, when the outer cap 5 is tightened in a state where the outer cap is opened and the tamper evidence band 51 and the closing plate 42 are removed, the upper surface of the check valve 1 is contacted to prevent the check valve from being opened.

図2−1は、本発明の逆流防止弁付き容器の外キャップを開封する工程を表す口部近傍の断面図で、外キャップ外周のローレット53を掴んで回転させる、開封における最初の工程である。外キャップ5の下端には、脆弱部により接続されたタンパーエビデントバンド51を設けている。そして、タンパーエビデントバンド51は係合リング43に係合している。外キャップ5を掴んで回転させると、内キャップ4を回転させようとする力と、引き上げようとする力が働く。しかし、内キャップ4の下端内側には、AA断面図で示すように、ラチェット構造を設けてあり、口部3に対し、締める方向には回転可動できるが、開く方向にはラチェットが当たり、回転しない。その為、内キャップ4は回転できない。
この為、外キャップ5のみが外れる方向に回転する。また、タンパーエビデントバンドは内キャップ4の係合リング43に係合しているため上昇できない。
FIG. 2-1 is a cross-sectional view of the vicinity of the mouth showing the step of opening the outer cap of the container with a backflow prevention valve of the present invention, and is the first step in opening that grasps and rotates the knurled 53 on the outer periphery of the outer cap. . At the lower end of the outer cap 5, a tamper evident band 51 connected by a fragile portion is provided. The tamper evident band 51 is engaged with the engagement ring 43. When the outer cap 5 is grasped and rotated, a force for rotating the inner cap 4 and a force for lifting the inner cap 4 work. However, a ratchet structure is provided on the inner side of the lower end of the inner cap 4 as shown in the AA sectional view. The ratchet structure can be rotated in the tightening direction with respect to the mouth 3, but the ratchet hits in the opening direction and rotates. do not do. Therefore, the inner cap 4 cannot rotate.
For this reason, it rotates in the direction in which only the outer cap 5 is removed. Further, since the tamper evident band is engaged with the engagement ring 43 of the inner cap 4, it cannot be raised.

図2−2は、外キャップ5のみが回転するが、内キャップ4の係合リング43に係合しているタンパーエビデントバンド51は、上昇できず、タンパーエビデントバンド51と繋がっている脆弱部510が破断し、タンパーエビデントバンド51と外キャップ本体とが分離した状態になる。タンパーエビデントバンド51には、切れ目511が設けられている。その為、タンパーエビデントバンド51が破断した外キャップ5は、内キャップ4から、外すことができる。   In FIG. 2B, only the outer cap 5 rotates, but the tamper evident band 51 engaged with the engagement ring 43 of the inner cap 4 cannot be raised, and is vulnerable to the tamper evidence band 51. The portion 510 is broken, and the tamper evident band 51 and the outer cap main body are separated. The tamper evident band 51 is provided with a cut 511. Therefore, the outer cap 5 in which the tamper evident band 51 is broken can be removed from the inner cap 4.

図3−1は、外キャップ5が外れた容器において、内キャップ4の注出口に設けられた閉鎖板42のプルリング421を引っ張り、開封する工程を示す断面図である。
閉鎖板42は内キャップ4とは薄肉線422で繋がっていて、これを引きちぎって開封する。閉鎖板42が取り外されると、逆流防止弁1の弁体11が開放され、中身が取り出せる状態になる。
FIG. 3A is a cross-sectional view illustrating a process of pulling and opening the pull ring 421 of the closing plate 42 provided at the spout of the inner cap 4 in the container from which the outer cap 5 has been removed.
The closing plate 42 is connected to the inner cap 4 by a thin wire 422 and is torn and opened. When the closing plate 42 is removed, the valve element 11 of the check valve 1 is opened, and the contents can be taken out.

図4−1は閉鎖板が外れ、注出する状態を示した。外圧に対し容器本体の内圧が低くなると、逆流防止弁1の弁体11が容器内部に引き寄せられ、内側に動いて注出口33は閉じて、内部に外気などの侵入を抑えることができる。   FIG. 4A shows a state in which the closing plate is detached and poured out. When the internal pressure of the container main body becomes lower than the external pressure, the valve body 11 of the backflow prevention valve 1 is attracted to the inside of the container, moves inward, and the spout 33 is closed, so that intrusion of outside air or the like can be suppressed.

図4−2は逆流防止弁1の一例である。円形の一部が欠けた形状の切込みがある弾性体でできていて、弁体11が開口した状態を示した。弁体を開口できる構造であればかまわないため、切込みの形状はどのような形状でも構わない。   FIG. 4B is an example of the check valve 1. It is made of an elastic body having a cut in a shape in which a part of the circle is missing, and shows a state in which the valve body 11 is opened. Any structure may be used as long as the valve body can be opened, and the shape of the cut may be any shape.

図3−2は、閉鎖板の開封後、タンパーエビデントバンドを取り外した後に外キャップ5を締めた状態を示す。タンパーエビデントバンドがない分、内キャップ4に対して外キャップ5を奥まで締めることが出来る。タンパーエビデントバンドがあった場合には、押し当て突起52の先端は、逆流防止弁1から離れた位置にあったが、タンパーエビデントバンドが外されると、押し当て突起52の先端は、逆流防止弁1の弁体11の外面に当接する。押し当て突起52が弁体11に当接すると、容器が転倒したり、間違って容器外部を押してしまい、一時的に内圧が急激に高くなった場合でも、弁体11は外側に動けないので、内容物は容器内部に留まり、内キャップ4の注出部近傍が汚れることはない。   FIG. 3-2 shows a state in which the outer cap 5 is tightened after the tamper evidence band is removed after the closing plate is opened. Since there is no tamper evident band, the outer cap 5 can be tightened to the inner cap 4 as far as it will go. When the tamper evidence band was present, the tip of the pressing projection 52 was at a position away from the backflow prevention valve 1, but when the tamper evidence band was removed, the tip of the pressing projection 52 was It contacts the outer surface of the valve body 11 of the backflow prevention valve 1. When the pressing protrusion 52 comes into contact with the valve body 11, even if the container falls or accidentally pushes the outside of the container and the internal pressure temporarily increases rapidly, the valve body 11 cannot move outward. The contents remain inside the container, and the vicinity of the extraction portion of the inner cap 4 is not soiled.

本発明に使用される弾性を有する容器本体2は、容器本体が可撓性のある材質からなる胴部21を有する容器である。すなわち、可撓性のある胴部21を容器外部から押すことで、容器内部に圧力が発生し、その高くなった圧力で、注出口310近傍の内容物が外に押し出される仕組みを持った容器であるが、可撓性のある容器であれば、ブロー成形容器、射出成形容器でも構わない。逆流防止弁の厚みを調整すれば、容器を押圧しなくても、傾けたときの内容物の圧力のみで注出できるような構造とすることもできる。
胴部21は可撓性のある材料として、低密度ポリエチレンや、紙や金属箔とのラミネーションフィルムの他、中密度ポリエチレン、
ポリアミド樹脂/無水マレイン酸変性ポリエチレン/低密度ポリエチレン、
低密度ポリエチレン/無水マレイン酸変性ポリエチレン/エチレン・酢酸ビニル共重合体鹸化物/無水マレイン酸変性ポリエチレン/低密度ポリエチレン、
低密度ポリエチレン/無水マレイン酸変性ポリエチレン/ポリアミド樹脂/無水マレイン酸変性ポリエチレン/低密度ポリエチレン、
などのいずれかの構成からなる胴部を有する押出しチューブ容器が考えられる。
本発明に使用される弾性を有する容器は、この他、マヨネーズ容器のように、全体が薄肉で軟質のプラスチックで出来たブロー成形容器であってもかまわない。また、肩部と胴部が一体で作られ、内容物充填後、底シールするブロー成形チューブ容器であってもかまわない。
The elastic container body 2 used in the present invention is a container having a body portion 21 made of a flexible material. That is, by pressing the flexible body portion 21 from the outside of the container, pressure is generated inside the container, and with the increased pressure, the container in which the contents near the spout 310 are pushed out. However, as long as the container is flexible, it may be a blow molded container or an injection molded container. If the thickness of the backflow prevention valve is adjusted, it is possible to make a structure that can be poured only by the pressure of the contents when tilted without pressing the container.
The body 21 is a flexible material such as low density polyethylene, lamination film with paper or metal foil, medium density polyethylene,
Polyamide resin / maleic anhydride modified polyethylene / low density polyethylene,
Low density polyethylene / maleic anhydride modified polyethylene / ethylene vinyl acetate copolymer saponified product / maleic anhydride modified polyethylene / low density polyethylene,
Low density polyethylene / maleic anhydride modified polyethylene / polyamide resin / maleic anhydride modified polyethylene / low density polyethylene,
An extruded tube container having a body portion having any structure such as the above is conceivable.
In addition, the elastic container used in the present invention may be a blow-molded container made entirely of a thin and soft plastic such as a mayonnaise container. Further, it may be a blow molded tube container in which the shoulder portion and the trunk portion are integrally formed and the bottom is sealed after the contents are filled.

このような弾性を有する容器本体2は、プラスチックを主たる素材として作られているので、可撓性が高い反面、復元力、すなわち、当初の形状を維持し、変形させても当初の形状に戻ろうとする形状記憶性が高い。その為、内容物を排出し、容器を押すことをやめると、容器は元に戻ろうとし、押し出した内容量分の容量を戻そうとして、外部から空気を吸い込む力が働く。外部から空気を吸い込むと、次に押し出す時には、口部21近傍に入ってしまった空気が内容物と一緒に排出されるので、内容物5が飛び散って容器周囲を汚す問題が発生しやすかった。しかし、本発明の逆流防止弁付き容器にすると、内容物5を排出後、内部の圧力が低下した時点で、弁体がすぐに封止面に当接して、注出口310を塞ぐ逆流防止機能が働き、空気が入り込むことはない。   Since the container body 2 having such elasticity is made of plastic as a main material, it is highly flexible, but it retains its restoring force, that is, its original shape, and returns to its original shape even when deformed. High shape memory. For this reason, when the contents are discharged and the container is stopped from being pushed, the container tries to return to its original state, and the force of sucking air from the outside works to return the capacity of the pushed out internal volume. When air is sucked in from the outside, the air that has entered the vicinity of the mouth portion 21 is discharged together with the contents when it is pushed out next, so that the problem that the contents 5 are scattered and the surroundings of the container are easily contaminated. However, when the container with the backflow prevention valve of the present invention is used, the backflow prevention function of closing the spout 310 by the valve body immediately coming into contact with the sealing surface when the internal pressure drops after the contents 5 are discharged. Works and air does not enter.

本発明の口部3に使用する材質は、内容物8に対して変質しなく、かつ、変質させない硬質の素材で、ポリプロピレン樹脂、高密度ポリエチレン樹脂、中密度ポリエチレン樹脂、アクリロニトリル・ブタジエン・スチレン共重合樹脂、ポリオキシメチレン系樹脂、ポリアミド樹脂、ポリエーテルサルフォン樹脂などが考えられ、射出成形や圧縮成形によって製造可能である。   The material used for the mouth part 3 of the present invention is a hard material that does not change and does not change the contents 8, and includes polypropylene resin, high density polyethylene resin, medium density polyethylene resin, acrylonitrile / butadiene / styrene. Polymerized resins, polyoxymethylene resins, polyamide resins, polyether sulfone resins, and the like are conceivable and can be manufactured by injection molding or compression molding.

逆流防止弁体1に使用される材料は、内容物に対して変質しなく、かつ、変質させない素材であれば、どのようなものでも良い。例えば、ポリプロピレン樹脂、ポリオキシメチレン樹脂、ポリアミド樹脂、ポリエーテルサルフォン樹脂、高密度ポリエチレン樹脂、低密度ポリエチレン樹脂、フッ素系樹脂、シリコンゴム、フッ素ゴム、イソプレンゴム、クロロプレンゴム、エチレンプロピレンゴムなどが考えられる。これらの材料からなるフィルムの単層または積層体を抜き加工することで製造する。   The material used for the backflow prevention valve body 1 may be any material as long as the material does not change with respect to the contents and does not change. For example, polypropylene resin, polyoxymethylene resin, polyamide resin, polyether sulfone resin, high density polyethylene resin, low density polyethylene resin, fluorine resin, silicon rubber, fluorine rubber, isoprene rubber, chloroprene rubber, ethylene propylene rubber, etc. Conceivable. Manufactured by punching a single layer or a laminate of films made of these materials.

本発明の逆流防止弁付き容器は、以上の様なもので、逆流防止機能を有しているので、内部に空気が入り込まない。しかも、外キャップを閉めていれば、逆流防止弁も開口しないので、転倒などがあったとしても、漏れが発生して汚れるなどの問題がない。
また、開封するのに、外キャップのタンパーエビデントバンドを切り、閉鎖板を破断して抜き取るなどの行為が必要で、目視で明確に判断でき、バージン性を確認可能である。
しかも、量産性が高いフィルム状の逆流防止弁を使用できる。部材がそれぞれ別体で、最適な素材を使用することができるので、安価で、生産性も高いなど、本発明のメリットは大きい。
The container with a backflow prevention valve of the present invention is as described above and has a backflow prevention function, so that air does not enter inside. In addition, if the outer cap is closed, the backflow prevention valve does not open, so that there is no problem of contamination due to leakage even if it falls.
Moreover, in order to open the container, it is necessary to cut off the tamper-evident band of the outer cap and to break and remove the closing plate, so that it can be clearly judged visually and the virginity can be confirmed.
In addition, a film-like backflow prevention valve having high mass productivity can be used. Since each member is a separate member and an optimum material can be used, the merit of the present invention is great, such as low cost and high productivity.

1・・・・・・・・・逆流防止弁
11・・・・・・・・弁体
2・・・・・・・・・容器本体
21・・・・・・・・胴部
22・・・・・・・・底シール部
23・・・・・・・・ネック融着部(胴部の先端)
3・・・・・・・・・口部
31・・・・・・・・注出天板部
32・・・・・・・・側壁部
321・・・・・・・ネジ部
33・・・・・・・・注出口
4・・・・・・・・・内キャップ
42・・・・・・・・閉鎖板
421・・・・・・・プルリング
422・・・・・・・薄肉線
43・・・・・・・・係合リング
5・・・・・・・・・外キャップ
51・・・・・・・・タンパーエビデントバンド
510・・・・・・・脆弱部
511・・・・・・・切れ目
52・・・・・・・・押し当て突起
53・・・・・・・・ローレット
8・・・・・・・・・内容物
1 ... Backflow prevention valve 11 ... Valve body 2 ... Container body 21 ... Body 22 ...・ ・ ・ ・ ・ ・ Bottom seal part 23 ・ ・ ・ ・ ・ ・ ・ ・ Neck fusion part
3 ··························································································· ······················································································· Closed plate 421 43... Engagement ring 5 ... Outer cap 51 ... Tamper evident band 510 ... Fragile part 511 ... cut 52 ... pressing protrusion 53 ... knurl 8 ... contents

Claims (7)

逆流防止弁と、内キャップと、内キャップを覆う外キャップとからなる逆流防止弁付きキャップにおいて、
前記内キャップは容器本体口部外周に形成されたネジ部に螺合可能であり、
内キャップ外周と外キャップ内周に、内キャップと外キャップとが螺合するネジ部を有し、
逆流防止弁は、シート状の部材に切込みが入れられていることを特徴とする逆流防止弁付きキャップ。
In a cap with a backflow prevention valve consisting of a backflow prevention valve, an inner cap, and an outer cap covering the inner cap,
The inner cap can be screwed into a threaded portion formed on the outer periphery of the container body mouth,
In the outer periphery of the inner cap and the inner periphery of the outer cap, there is a threaded portion in which the inner cap and the outer cap are screwed,
The backflow prevention valve is a cap with a backflow prevention valve, wherein a sheet-like member is cut.
前記外キャップには、開封後逆流防止弁の外面に当接する押し当て突起が設けられていることを特徴とする請求項1に記載の逆流防止弁付きキャップ。 The cap with a backflow prevention valve according to claim 1, wherein the outer cap is provided with a pressing projection that abuts on the outer surface of the backflow prevention valve after opening. 前記内キャップを薄肉線を介して接続された閉鎖板が設けられていることを特徴とする請求項1または請求項2に記載の逆流防止弁付きキャップ。 The cap with a backflow prevention valve according to claim 1 or 2, further comprising a closing plate connected to the inner cap through a thin wire. 外キャップ下端には脆弱部を介して接続されたタンパーエビデンスバンドが設けられており、前記タンパーエビデンスバンドが、前記内キャップの下端近傍に設けられた係合リングと係合していることを特徴とする請求項1〜3のいずれかに記載の逆流防止弁付きキャップ。   A tamper evidence band connected via a fragile portion is provided at the lower end of the outer cap, and the tamper evidence band is engaged with an engagement ring provided near the lower end of the inner cap. The cap with a backflow prevention valve according to any one of claims 1 to 3. 前記内キャップの内面には、容器本体口部の外面との間にラチェット構造が設けられていることを特徴とする請求項1〜4のいずれかに記載の逆流防止弁付きキャップ。   The cap with a backflow prevention valve according to any one of claims 1 to 4, wherein a ratchet structure is provided on an inner surface of the inner cap with an outer surface of the container main body mouth portion. タンパーエビデンスバンドを取り外す前の状態において、前記押し当て突起の先端から逆流防止弁の外面までの距離が、タンパーエビデンスバンドの厚みと一致していることを特徴とする請求項4または5に記載の逆流防止弁付きキャップ。   The distance from the tip of the pressing projection to the outer surface of the backflow prevention valve in a state before removing the tamper evidence band is equal to the thickness of the tamper evidence band. Cap with backflow prevention valve. 請求項1〜請求項6に記載のキャップを容器本体口部に取り付けたことを特徴とする逆流防止弁付き容器。 A container with a backflow prevention valve, wherein the cap according to any one of claims 1 to 6 is attached to a container body opening.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020121732A (en) * 2019-01-29 2020-08-13 凸版印刷株式会社 Tube container
WO2023172015A1 (en) * 2022-03-08 2023-09-14 주식회사 연우 Content container

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Publication number Priority date Publication date Assignee Title
JPH1086961A (en) * 1996-09-17 1998-04-07 Japan Crown Cork Co Ltd Container cover for squeeze bottle
JPH10157751A (en) * 1996-11-29 1998-06-16 Katsutoshi Masuda Backflow preventive tool in tube
JP2005067699A (en) * 2003-08-27 2005-03-17 Toyo Seikan Kaisha Ltd Plastic cap having separating function
JP2008094416A (en) * 2006-10-10 2008-04-24 Fancl Corp Bottle container

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1086961A (en) * 1996-09-17 1998-04-07 Japan Crown Cork Co Ltd Container cover for squeeze bottle
JPH10157751A (en) * 1996-11-29 1998-06-16 Katsutoshi Masuda Backflow preventive tool in tube
JP2005067699A (en) * 2003-08-27 2005-03-17 Toyo Seikan Kaisha Ltd Plastic cap having separating function
JP2008094416A (en) * 2006-10-10 2008-04-24 Fancl Corp Bottle container

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020121732A (en) * 2019-01-29 2020-08-13 凸版印刷株式会社 Tube container
WO2023172015A1 (en) * 2022-03-08 2023-09-14 주식회사 연우 Content container

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