JP7008493B2 - Container lid and container with container lid - Google Patents

Container lid and container with container lid Download PDF

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JP7008493B2
JP7008493B2 JP2017242632A JP2017242632A JP7008493B2 JP 7008493 B2 JP7008493 B2 JP 7008493B2 JP 2017242632 A JP2017242632 A JP 2017242632A JP 2017242632 A JP2017242632 A JP 2017242632A JP 7008493 B2 JP7008493 B2 JP 7008493B2
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container
flexible seal
annular
seal piece
lid
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JP2019108152A (en
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慎二 大森
尚 杉山
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Nippon Closures Co Ltd
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Nippon Closures Co Ltd
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Description

本発明は、それぞれ圧搾自在な外側容器層と内側容器層との積層構造である容器に適用される容器蓋に関すると共に、この容器蓋が口頸部に嵌合された容器蓋付き容器などに関する。 The present invention relates to a container lid applied to a container having a laminated structure of an outer container layer and an inner container layer that can be squeezed, and also relates to a container with a container lid in which the container lid is fitted to the mouth and neck.

近年では、例えば酸化抑制しながら醤油などの調味料を保存する容器として、いわゆる二重容器が用いられるようになってきた(例えば特許文献1参照)。かような二重容器においては、それぞれ圧搾自在な外側容器層と内側容器層との積層構造を有し、そして外側容器層と内側容器層との間に外気を導入するための孔が外側容器層の口頸部に形成されることがある。 In recent years, so-called double containers have come to be used as containers for storing seasonings such as soy sauce while suppressing oxidation (see, for example, Patent Document 1). In such a double container, each has a laminated structure of a squeezable outer container layer and an inner container layer, and a hole for introducing outside air between the outer container layer and the inner container layer is provided in the outer container. It may form in the mouth and neck of the layer.

一方で上記した二重容器の口頸部に嵌合される容器蓋としては、圧搾されて変形する容器の復元を阻害せず容器内の密封性を確保する機能が要求される。かような機能を実現するため、例えば上記した特許文献1においては、容器蓋の周壁24には環状弁板30を含む吸気弁用の弁部材7が装着されている。この吸気弁用の弁部材7は、エラストマー等の柔軟で弾力性に富む材質により形成されてなり、容器体胴部8の圧搾による吸気孔10からの空気の排出を防止するとともに、圧搾後の胴部8の弾性復元により吸気孔10を介して外気を導入する如く構成した吸気弁を形成するために設けられている。 On the other hand, the container lid fitted to the mouth and neck of the above-mentioned double container is required to have a function of ensuring the sealing property inside the container without hindering the restoration of the container that is squeezed and deformed. In order to realize such a function, for example, in the above-mentioned Patent Document 1, a valve member 7 for an intake valve including an annular valve plate 30 is mounted on the peripheral wall 24 of the container lid. The valve member 7 for the intake valve is made of a flexible and elastic material such as an elastomer to prevent air from being discharged from the intake hole 10 due to compression of the container body 8 and after compression. It is provided to form an intake valve configured to introduce outside air through the intake hole 10 by elastic restoration of the body portion 8.

この特許文献1に開示されたキャップによれば、容器体2が弾性復元力により元の状態に戻ろうとするとき、その内部の負圧化によって弁板17が閉じる一方で、さらに弾性復元する容器体内の負圧化により環状弁板30を開いて吸気孔10を介して外側容器層と内側容器層との間に外気を導入することを実現している。 According to the cap disclosed in Patent Document 1, when the container body 2 tries to return to the original state by the elastic restoring force, the valve plate 17 closes due to the negative pressure inside the container body 2, while the container further elastically restores. It is realized that the annular valve plate 30 is opened by the negative pressure in the body and the outside air is introduced between the outer container layer and the inner container layer through the intake hole 10.

特開平10-45180号公報Japanese Unexamined Patent Publication No. 10-45180

上述のとおり利便性に優れた二重容器は今後ますます需要が増してくると想定できるが、上記特許文献を含む既存の技術ではいまだ市場のニーズを満たしているとは言えず、少なくとも以下に述べる課題が未だに存在する。
すなわち二重容器に適用される容器蓋としては、上記したとおりまず容器の復元を阻害せず密封性を確保する機能が要求されるが、さらに利便性を向上させるため連続した内容物の吐出を可能ならしめる程度の早い容器復元性が望まれる。
As mentioned above, it can be assumed that the demand for highly convenient double containers will increase in the future, but it cannot be said that the existing technologies including the above patent documents still meet the needs of the market, and at least the following The challenges to be mentioned still exist.
That is, as described above, the container lid applied to the double container is first required to have a function of ensuring the sealing property without hindering the restoration of the container, but in order to further improve the convenience, continuous discharge of the contents is required. It is desired that the container can be restored as quickly as possible.

この点において、例えば容器の復元を早めるには環状弁板30の剛性を弱めて吸気孔10を介した外気導入を促進することが考えられるが、口頚部9に対する環状弁板30の密接力も弱まるため、容器をスクイズする時に空気が漏れてしまい内容物の吐出が困難となってしまう。
他方で、環状弁板30の剛性を高めた場合には口頚部9に対する環状弁板30の密接力も強まってしまい、内容物を吐出した後における容器の復元(上記した外気の導入)が遅くなるため、上記の連続した内容物の吐出は到底困難となってしまう。
In this respect, for example, in order to accelerate the restoration of the container, it is conceivable to weaken the rigidity of the annular valve plate 30 to promote the introduction of outside air through the intake hole 10, but the close force of the annular valve plate 30 to the mouth neck 9 is also weakened. Therefore, when squeezing the container, air leaks and it becomes difficult to discharge the contents.
On the other hand, when the rigidity of the annular valve plate 30 is increased, the close force of the annular valve plate 30 with respect to the mouth neck 9 is also increased, and the restoration of the container (introduction of the outside air described above) after discharging the contents is delayed. Therefore, it becomes extremely difficult to discharge the above-mentioned continuous contents.

従って、本発明の目的の1つは、内容物の吐出や容器の復元を阻害せず密封性を確保しつつ、さらには連続吐出が可能な程度に容器を早く復元することが可能な容器蓋と、この容器蓋が装着された容器蓋付き容器を提供することにある。 Therefore, one of the objects of the present invention is a container lid capable of quickly restoring the container to the extent that continuous discharge is possible while ensuring the sealing property without hindering the discharge of the contents and the restoration of the container. The present invention is to provide a container with a container lid to which the container lid is attached.

上記課題を解決するため、本発明の一形態における容器蓋は、(1)外側容器層と内側容器層との間に外気を導入するための導入手段と容器蓋嵌合部と環状突出部とが口頸部に形成された、スクイズにより内容物を排出可能な容器に対し、該容器の口頸部に嵌合される容器蓋であって、前記容器蓋は、前記容器の内容物が通過する排出開口が形成されると共に、該排出開口を閉じる弁体が配設される閉塞壁と、前記閉塞壁の外周縁部から垂下し、内面に容器嵌合部を有する装着壁と、前記装着壁に形成されて当該装着壁の内周面から半径方向内方に延出するとともに、周方向において相対的に厚みが増大した厚肉部を有する環状可撓性シール片と、を具備し、前記口頸部に前記容器蓋が嵌合され、前記外側容器層のうち前記導入手段よりも下方に形成された前記環状突出部の上面と前記環状可撓性シール片の下面とが密接するとき、前記厚肉部の終端付近において前記環状突出部と前記環状可撓性シール片との間に外気導通隙間が形成され、前記装着壁の内周面には、前記環状可撓性シール片が一体に形成されていると共に前記環状可撓性シール片の上方に位置する捨てアンダーカットが形成されていることを特徴とする。
また、上記課題を解決するため、本発明の他の一形態における容器蓋は、(2)外側容器層と内側容器層との間に外気を導入するための導入手段と容器蓋嵌合部と環状突出部とが口頸部に形成された、スクイズにより内容物を排出可能な容器に対し、該容器の口頸部に嵌合される容器蓋であって、前記容器蓋は、前記容器の内容物が通過する排出開口が形成されると共に、該排出開口を閉じる弁体が配設される閉塞壁と、前記閉塞壁の外周縁部から垂下し、内面に容器嵌合部を有する装着壁と、前記装着壁に形成されて当該装着壁の内周面から半径方向内方に延出するとともに、周方向において相対的に厚みが増大した厚肉部を有する環状可撓性シール片と、を具備し、前記口頸部に前記容器蓋が嵌合され、前記外側容器層のうち前記導入手段よりも下方に形成された前記環状突出部の上面と前記環状可撓性シール片の下面とが密接するとき、前記厚肉部の終端付近において前記環状突出部と前記環状可撓性シール片との間に外気導通隙間が形成され、前記環状可撓性シール片は、前記装着壁の内周面に一体に形成されていると共に前記半径方向内方に向かって且つ下方に傾斜して延出することを特徴とする。
なお、上記した(1)又は(2)に記載の容器蓋においては、()前記外気導通隙間は、前記容器をスクイズする際において、該外側容器層と該内側容器層との間の内気の流出を許容しない隙間であることが好ましい。
また、上記した(1)~(3)のいずれかに記載の容器蓋においては、()前記外気導通隙間は、容器をスクイズ解除後において、該外側容器層と該内側容器層との間の圧力が外気の圧力よりも所定値以上小さくなった場合にのみ外気の流入を許容する隙間であることが好ましい。
In order to solve the above problems, the container lid in one embodiment of the present invention includes (1) an introduction means for introducing outside air between the outer container layer and the inner container layer, a container lid fitting portion, and an annular protrusion. Is a container lid that is fitted to the mouth and neck of the container, and the contents of the container pass through the container lid, which is formed in the mouth and neck and can discharge the contents by squeeze. A closed wall in which a valve body that closes the discharged opening is arranged, a mounting wall that hangs from the outer peripheral edge of the closed wall and has a container fitting portion on the inner surface, and the mounting. An annular flexible seal piece formed on the wall and extending inward in the radial direction from the inner peripheral surface of the mounting wall and having a thick portion having a relatively increased thickness in the circumferential direction is provided. When the container lid is fitted to the mouth and neck, and the upper surface of the annular protrusion formed below the introduction means in the outer container layer and the lower surface of the annular flexible seal piece are in close contact with each other. An outside air conduction gap is formed between the annular protrusion and the annular flexible seal piece near the end of the thick portion, and the annular flexible seal piece is formed on the inner peripheral surface of the mounting wall. It is characterized in that it is integrally formed and a discard undercut located above the annular flexible seal piece is formed .
Further, in order to solve the above problems, the container lid in another embodiment of the present invention includes (2) an introduction means for introducing outside air between the outer container layer and the inner container layer, and a container lid fitting portion. An annular protrusion is a container lid that is fitted to the mouth and neck of the container with respect to a container in which the contents can be discharged by squeezing, and the container lid is the container of the container. A closed wall in which a discharge opening through which the contents pass is formed and a valve body for closing the discharge opening is arranged, and a mounting wall that hangs from the outer peripheral edge of the closed wall and has a container fitting portion on the inner surface. An annular flexible seal piece formed on the mounting wall, extending inward in the radial direction from the inner peripheral surface of the mounting wall, and having a thick portion having a relatively increased thickness in the circumferential direction. The upper surface of the annular protrusion and the lower surface of the annular flexible seal piece formed below the introduction means in the outer container layer in which the container lid is fitted to the mouth and neck. When they are in close contact with each other, an outside air conduction gap is formed between the annular protrusion and the annular flexible seal piece near the end of the thick portion, and the annular flexible seal piece is inside the mounting wall. It is characterized in that it is integrally formed on the peripheral surface and extends inward and downward in the radial direction.
In the container lid according to (1) or (2) described above, ( 3 ) the outside air conduction gap is the inside air between the outer container layer and the inner container layer when the container is squeezed. It is preferable that the gap does not allow the outflow of.
Further, in the container lid according to any one of (1) to (3) described above, ( 4 ) the outside air conduction gap is formed between the outer container layer and the inner container layer after the container is released from squeeze. It is preferable that the gap allows the inflow of the outside air only when the pressure of the outside air becomes smaller than the pressure of the outside air by a predetermined value or more.

さらに、上記した(1)~()のいずれかに記載の容器蓋においては、()前記厚肉部は、前記環状可撓性シール片のうち前記外側容器層の環状突出部と接触する側に形成されていることが好ましい。
Further, in the container lid according to any one of (1) to ( 4 ) described above, ( 5 ) the thick portion is in contact with the annular protrusion of the outer container layer of the annular flexible seal piece. It is preferable that it is formed on the side of the container.

また、上記した(1)~()のいずれかに記載の容器蓋においては、()前記厚肉部は、前記環状可撓性シール片の周方向に関して複数形成されていることが好ましい。
このとき()に記載の容器蓋においては、()複数の前記厚肉部は、前記周方向に関して互いに近接しないように形成されていることがより好ましい。
Further, in the container lid according to any one of (1) to ( 5 ) described above, it is preferable that ( 6 ) a plurality of the thick portions are formed in the circumferential direction of the annular flexible seal piece. ..
At this time, in the container lid according to ( 6 ), it is more preferable that the plurality of ( 7 ) thick portions are formed so as not to be close to each other in the circumferential direction.

また、上記した()又は()に記載の容器蓋においては、()複数の前記厚肉部は前記周方向に関してそれぞれ実質的に等しい幅を有し、前記環状可撓性シール片の中心を基準として互いに対向するように配置されていることが好ましい。
Further, in the container lid according to ( 6 ) or ( 7 ) described above, ( 8 ) the plurality of the thick portions have substantially the same width in the circumferential direction, and the annular flexible seal piece. It is preferable that they are arranged so as to face each other with respect to the center of the.

さらに上記課題を解決するため、本発明の一形態における容器蓋付き容器は、上記した(1)~()のいずれかに記載の容器蓋と、外側容器層と内側容器層との間に外気を導入するための導入手段が形成されると共に前記容器蓋が嵌合される口頸部、前記口頸部を通過した内容物が充填される内側容器層、及び前記内側容器層の外側に積層されて当該内側容器層との間に外気を導入可能な外側容器層を含む容器と、を有することを特徴とする。
Further, in order to solve the above-mentioned problems, the container with a container lid in one embodiment of the present invention is placed between the container lid according to any one of (1) to ( 8 ) above and between the outer container layer and the inner container layer. On the outside of the mouth and neck to which the container lid is fitted, the inner container layer filled with the contents that have passed through the mouth and neck, and the inner container layer to which the introduction means for introducing the outside air is formed. It is characterized by having a container including an outer container layer which is laminated and can introduce outside air between the inner container layer and the inner container layer.

本発明によれば、環状可撓性シール片又は環状突出部に対して密封性と容器復元性を高次元で両立する機能を持たせることが可能となり、内容物の吐出や容器の復元を阻害せずに密封性を確保しつつ連続的な内容物の吐出が可能な容器を実現できる。 According to the present invention, it is possible to provide the annular flexible seal piece or the annular protrusion with a function of achieving both sealing property and container restoration property at a high level, which hinders the discharge of contents and the restoration of the container. It is possible to realize a container that can continuously discharge the contents while ensuring the sealing property without using.

第1実施形態に係る容器蓋18が容器2と嵌合した状態を示す部分断面図である。It is a partial cross-sectional view which shows the state which the container lid 18 which concerns on 1st Embodiment is fitted with a container 2. 容器蓋18を底面の側から見た底面図である。It is a bottom view which looked at the container lid 18 from the side of the bottom surface. 容器蓋18に配設された弁体70の一例を示す逆止弁の構成を説明する模式図図である。It is a schematic diagram explaining the structure of the check valve which shows an example of the valve body 70 arranged in the container lid 18. 環状可撓性シール片42のうち厚肉部が形成された領域を底面から見た場合の底面図である。It is a bottom view when the region where the thick part was formed in the annular flexible seal piece 42 is seen from the bottom surface. 環状可撓性シール片42の詳細な構造を説明する断面図である。It is sectional drawing explaining the detailed structure of the annular flexible seal piece 42. 本実施形態の環状突出部14の上面と環状可撓性シール片42の下面とが密接して外気導通隙間AHが形成された状態を説明する拡大断面写真である。It is an enlarged cross-sectional photograph explaining a state in which the upper surface of the annular protrusion 14 of this embodiment and the lower surface of the annular flexible seal piece 42 are in close contact with each other to form an outside air conduction gap AH. 外側容器層4と内側容器層6との間の圧力の変化による環状可撓性シール片42の挙動を示す部分断面図である。FIG. 3 is a partial cross-sectional view showing the behavior of the annular flexible seal piece 42 due to a change in pressure between the outer container layer 4 and the inner container layer 6. 第2実施形態に係る容器蓋18を底面の側から見た底面図である。It is a bottom view which looked at the container lid 18 which concerns on 2nd Embodiment from the side of the bottom surface.

以下、本発明を好適に実施するための実施形態について説明する。
なお本実施形態においては、説明の便宜上、容器蓋18が嵌合される容器2は口頸部8を中心にして図示しているが、この容器2のうち不図示の部分における構造は公知の容器における種々の構造を適用してもよい。また、図を用いた説明において、X、Y及びZ方向を適宜設定したが、説明の便宜上であって本発明を何ら過度に限定するものではない。
Hereinafter, embodiments for preferably carrying out the present invention will be described.
In the present embodiment, for convenience of explanation, the container 2 to which the container lid 18 is fitted is shown centering on the mouth and neck portion 8, but the structure of the container 2 not shown is known. Various structures in the container may be applied. Further, in the description using figures, the X, Y and Z directions are appropriately set, but the present invention is not excessively limited for convenience of description.

[第1実施形態]
<容器蓋>
図1は、第1実施形態に係る容器蓋18が容器2と嵌合した状態を示す部分断面図である。
本実施形態における容器蓋18は、外側容器層4と内側容器層6との間に外気を導入するための導入手段10と環状係止突条12(容器蓋嵌合部)と環状突出部14とが口頸部8に形成された、スクイズにより内容物を排出可能な容器2に対し、該容器の口頸部8に嵌合される容器蓋18であって、容器の内容物が通過する排出開口26が形成されると共に、該排出開口26を閉じる弁体70が配設される閉塞壁22と、この閉塞壁22の外周縁部から垂下し、内面に弧状被係止突条40(容器嵌合部)を有する装着壁24と、この装着壁24に形成されて該装着壁24の内周面から半径方向内方に延出するとともに、周方向において相対的に厚みが増大した厚肉部を有する環状可撓性シール片42と、を具備している。
以下、本実施形態に係る容器蓋18及び容器2についてさらに詳述する。
[First Embodiment]
<Container lid>
FIG. 1 is a partial cross-sectional view showing a state in which the container lid 18 according to the first embodiment is fitted with the container 2.
The container lid 18 in the present embodiment includes an introduction means 10 for introducing outside air between the outer container layer 4 and the inner container layer 6, an annular locking ridge 12 (container lid fitting portion), and an annular protrusion 14. Is a container lid 18 that is fitted to the mouth and neck 8 of the container, and the contents of the container pass through, with respect to the container 2 formed in the mouth and neck 8 that can discharge the contents by squeeze. A closed wall 22 in which a discharge opening 26 is formed and a valve body 70 for closing the discharge opening 26 is arranged, and an arc-shaped locked ridge 40 (an arc-shaped locked ridge 40 that hangs down from the outer peripheral edge of the closed wall 22 and forms an inner surface. A mounting wall 24 having a container fitting portion) and a thickness formed on the mounting wall 24 that extends inward in the radial direction from the inner peripheral surface of the mounting wall 24 and has a relatively increased thickness in the circumferential direction. An annular flexible seal piece 42 having a flesh portion is provided.
Hereinafter, the container lid 18 and the container 2 according to the present embodiment will be described in more detail.

先ず、容器2について図1を参照して説明すると、本実施形態の容器2は、いわゆる二重容器であって、圧搾自在な外側容器層4と圧搾自在な内側容器層6との積層構造を有している。この容器2は、外側容器層4を形成するための基材(外側プリフォーム)の内側に内側容器層6を形成するための基材(内側プリフォーム)を予め積層させた状態で、外側プリフォームと内側プリフォームとを一体にブローして共押し出しすることで形成される。かような容器2の成形方法については、例えば特許第2586294号公報など公知の形成手法をさらに参照することができる。 First, the container 2 will be described with reference to FIG. 1. The container 2 of the present embodiment is a so-called double container, and has a laminated structure of a squeezable outer container layer 4 and a squeezable inner container layer 6. Have. In this container 2, the outer container 2 has a base material (inner preform) for forming the inner container layer 6 laminated in advance inside the base material (outer preform) for forming the outer container layer 4. It is formed by blowing the reform and the inner preform together and extruding them together. For the molding method of such a container 2, for example, a known molding method such as Japanese Patent No. 2586294 can be further referred to.

なお、外側容器層4の原料は、例えば高密度ポリエチレンやポリプロピレンの如き適宜の合成樹脂が例示できる。一方で内側容器層6の原料は、外側容器層4に比して軟質の例えばナイロンの如き適宜の合成樹脂が例示できる。このように外側容器層4と内側容器層6は、強固に密着する上端部を除いた箇所においては、外側容器層4と内側容器層6とは剥離容易であるのが好都合である。 As the raw material of the outer container layer 4, an appropriate synthetic resin such as high-density polyethylene or polypropylene can be exemplified. On the other hand, as the raw material of the inner container layer 6, an appropriate synthetic resin such as nylon, which is softer than the outer container layer 4, can be exemplified. As described above, it is convenient that the outer container layer 4 and the inner container layer 6 can be easily separated from each other except for the upper end portion where the outer container layer 4 and the inner container layer 6 are firmly adhered to each other.

容器2の円筒形の口頸部8には、外側容器層4と内側容器層6との間に外気を導入するための導入手段10が形成されている。本実施形態においては、口頸部8は、有底筒壁形状である外側容器層4の上端部に設けられ、導入手段10は口頸部8において周方向に間隔を置いて1又は複数個設けられた小孔から構成されている。この導入手段10は、後述するとおりにして容器蓋18を容器2に装着した際に、閉塞壁22に形成されたシールリング34の下端よりも下方に位置する。 The cylindrical mouth neck 8 of the container 2 is formed with an introduction means 10 for introducing outside air between the outer container layer 4 and the inner container layer 6. In the present embodiment, the mouth neck 8 is provided at the upper end of the outer container layer 4 having a bottomed tubular wall shape, and the introduction means 10 is one or more at the mouth neck 8 at intervals in the circumferential direction. It is composed of small holes provided. The introduction means 10 is located below the lower end of the seal ring 34 formed on the closing wall 22 when the container lid 18 is attached to the container 2 as described later.

また、口頸部8の外周面には、上端部に位置する環状係止突条12(容器蓋嵌合部)と、該環状係止突条12よりも下方に位置する導入手段10と、該導入手段10よりも下方に位置する環状突出部14と、が形成されている。環状突出部14の更に下方には、容器2を運搬する際に使用される公知のサポートリング16も形成されている。
内側容器層6は、上端(口頸部8側)が開放された袋状であり、その外周面上端部は外側容器層4の内周面上端部と強固に密着している。必要に応じて、内側容器層6の上端部に半径方向外方に突出する環状突出部を設け、この環状突出部が外側容器層4の上端よりも上方に位置すると共にこれに係合されるようにし、容器2の口頸部8が外側容器層4の上端部と共に内側容器層6の環状突出部から構成されると共に導入手段10が内側容器層6に形成されるようにしてもよい。
Further, on the outer peripheral surface of the mouth neck portion 8, an annular locking ridge 12 (container lid fitting portion) located at the upper end portion, an introduction means 10 located below the annular locking ridge 12, and an introduction means 10 are provided. An annular protrusion 14 located below the introduction means 10 is formed. Further below the annular protrusion 14, a known support ring 16 used for transporting the container 2 is also formed.
The inner container layer 6 has a bag shape with an open upper end (mouth neck 8 side), and the upper end of the outer peripheral surface thereof is firmly in close contact with the upper end of the inner peripheral surface of the outer container layer 4. If necessary, an annular protrusion that protrudes outward in the radial direction is provided at the upper end of the inner container layer 6, and the annular protrusion is located above the upper end of the outer container layer 4 and is engaged with the annular protrusion. In this way, the mouth and neck 8 of the container 2 may be composed of the annular protrusion of the inner container layer 6 together with the upper end of the outer container layer 4, and the introduction means 10 may be formed in the inner container layer 6.

次いで、容器蓋18について図1を参照して説明を続けると、容器蓋18は、例えば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することができる蓋本体20を具備する。
蓋本体20は、閉塞壁22とこの閉塞壁22の外周縁部から垂下する円筒形の装着壁24とを有する。閉塞壁22は、円形中央領域22aと、この中央領域22aよりも下方に位置する円環状外周領域22bと、中央領域22aと外周領域22bとを接続し上面が半径方向外方に向かって下方に傾斜している円環状接続領域22cとを有する。中央領域22aの中央には、円形の排出開口26が形成されている。また、中央領域22aの上面には、排出開口26の外周縁を囲繞して上方に延びる案内壁28が形成されている。
Next, the description of the container lid 18 will be continued with reference to FIG. 1. The container lid 18 includes a lid body 20 that can be injection-molded from an appropriate synthetic resin such as polyethylene or polypropylene.
The lid body 20 has a closing wall 22 and a cylindrical mounting wall 24 hanging from the outer peripheral edge of the closing wall 22. The closed wall 22 connects the circular central region 22a, the annular outer peripheral region 22b located below the central region 22a, the central region 22a and the outer peripheral region 22b, and the upper surface thereof downwards in the radial direction. It has an inclined annular connection region 22c. A circular discharge opening 26 is formed in the center of the central region 22a. Further, on the upper surface of the central region 22a, a guide wall 28 that surrounds the outer peripheral edge of the discharge opening 26 and extends upward is formed.

案内壁28の主部は、例えば略円筒形状である。案内壁28の上端部には、断面が略半円形状で半径方向外方に突出するリップ部が設けられている。中央領域22aの下方には後述する弁体70が配設され、これにより排出開口26が閉じられる。
外周領域22bの上面には、略円筒形状の係止壁30が形成されている。この係止壁30は外周領域22bの半径方向略中間位置において上方に延出せしめられており、その外周面上端には、半径方向外方に突出した環状係止突起32が形成されている。
The main part of the guide wall 28 has a substantially cylindrical shape, for example. At the upper end of the guide wall 28, a lip portion having a substantially semicircular cross section and protruding outward in the radial direction is provided. A valve body 70, which will be described later, is arranged below the central region 22a, whereby the discharge opening 26 is closed.
A substantially cylindrical locking wall 30 is formed on the upper surface of the outer peripheral region 22b. The locking wall 30 extends upward at a position substantially intermediate in the radial direction of the outer peripheral region 22b, and an annular locking projection 32 protruding outward in the radial direction is formed at the upper end of the outer peripheral surface thereof.

外周領域22bの下面には、容器2の口頸部8の内面に密着可能な略円筒形状のシールリング34が形成されている。このシールリング34は、外周領域22bの半径方向略中間位置において下方に垂下している。
接続領域22cの下面には、略円筒形状の環状保持壁36が形成されている。この環状保持壁36の内周面下端には、半径方向内方に突出した環状保持突条38が形成されている。
On the lower surface of the outer peripheral region 22b, a substantially cylindrical seal ring 34 that can be in close contact with the inner surface of the mouth neck 8 of the container 2 is formed. The seal ring 34 hangs downward at a position substantially intermediate in the radial direction of the outer peripheral region 22b.
An annular holding wall 36 having a substantially cylindrical shape is formed on the lower surface of the connection region 22c. An annular holding ridge 38 protruding inward in the radial direction is formed at the lower end of the inner peripheral surface of the annular holding wall 36.

図1と共に図2を参照して説明を続けると、装着壁24の内周面における軸線方向略中間位置には、周方向に間隔を置いて周方向に延びる複数個(図示の場合は2個)の弧状被係止突条40(容器嵌合部)が形成されている。そして、装着壁24の内周面には、半径方向内方かつ下方に向かって延出する環状可撓性シール片42が形成されている。なお、本実施形態では、環状可撓性シール片42は装着壁24の内周面に一体に形成されている。 Continuing the explanation with reference to FIG. 1 and FIG. 2, a plurality of (two in the case of the drawing) extending in the circumferential direction at substantially intermediate positions in the axial direction on the inner peripheral surface of the mounting wall 24 are spaced apart from each other in the circumferential direction. ) Arc-shaped locked ridge 40 (container fitting portion) is formed. An annular flexible seal piece 42 extending inward and downward in the radial direction is formed on the inner peripheral surface of the mounting wall 24. In this embodiment, the annular flexible seal piece 42 is integrally formed on the inner peripheral surface of the mounting wall 24.

そして本実施形態では、この環状可撓性シール片42の上方に位置する捨てアンダーカット44が形成されていることが好ましい。図示の実施例においては、環状可撓性シール片42は装着壁24の内周面下部に一体に形成されており、捨てアンダーカット44は、環状可撓性シール片42の上方において装着壁24の内周面下部に一体に形成された環状突条46によって規定されている。また、環状可撓性シール片42自体によってアンダーカット48が規定されている。 And in this embodiment, it is preferable that the discard undercut 44 located above the annular flexible seal piece 42 is formed. In the illustrated embodiment, the annular flexible seal piece 42 is integrally formed at the lower part of the inner peripheral surface of the mounting wall 24, and the discarded undercut 44 is above the mounting wall 24 above the annular flexible seal piece 42. It is defined by an annular ridge 46 integrally formed at the lower part of the inner peripheral surface of the. Further, the undercut 48 is defined by the annular flexible seal piece 42 itself.

環状突条46の断面は、半径方向内方に突出する略円弧形状である。図1と共に図5を参照して説明すると、環状可撓性シール片42の基端と環状突条46の基端との軸線方向離隔寸法Lは、環状可撓性シール片42の半径方向突出寸法D1、D2よりも小さくなっていることが好ましい。環状可撓性シール片42は、半径方向内方に向かって下方に傾斜して延出しており、横断面図において弧状である。所望ならば、捨てアンダーカット44は、周方向に間隔を置いて周方向に延びる複数個の弧状突条によって規定することもできる。
上記構成とすることによって、容器蓋18の射出成形における所謂金型離型(補足すると、装着壁24の内周面を成形する金型は、装着壁24の上側から下側へ抜かれる。)の際、環状突条46が半径方向外方に強制せしめられ、装着壁24の下部が一時的に拡径される。すなわち、捨てアンダーカット44の存在に起因して蓋本体20の装着壁24における環状可撓性シール片42が存在する部位が半径方向外方に強制され、これによって環状可撓性シール片42の所謂無理抜きが軽減され、環状可撓性シール片42が損傷されることが可及的に回避される。
The cross section of the annular ridge 46 has a substantially arc shape protruding inward in the radial direction. Explaining with reference to FIG. 5, the axial separation dimension L between the base end of the annular flexible seal piece 42 and the base end of the annular ridge 46 is a radial protrusion of the annular flexible seal piece 42. It is preferably smaller than the dimensions D1 and D2. The annular flexible seal piece 42 extends inwardly inclined downward in the radial direction, and is arcuate in the cross-sectional view. If desired, the discard undercut 44 can also be defined by a plurality of arcuate ridges extending circumferentially spaced apart.
With the above configuration, the so-called mold release mold in the injection molding of the container lid 18 (in addition, the mold for molding the inner peripheral surface of the mounting wall 24 is pulled out from the upper side to the lower side of the mounting wall 24). At this time, the annular ridge 46 is forced outward in the radial direction, and the lower portion of the mounting wall 24 is temporarily expanded in diameter. That is, due to the presence of the discarded undercut 44, the portion of the mounting wall 24 of the lid body 20 where the annular flexible seal piece 42 is present is forced outward in the radial direction, whereby the annular flexible seal piece 42 of the annular flexible seal piece 42 is forced to exist. The so-called forcible removal is reduced, and damage to the annular flexible seal piece 42 is avoided as much as possible.

蓋本体20の装着壁24の上端には、ヒンジ手段50を介して外蓋52が接続されている。この外蓋52は蓋本体20と一体に形成され(従って外蓋52も合成樹脂製である)、公知のとおり蓋本体20の閉塞壁22を覆う閉位置と閉塞壁22を露呈せしめる開位置との間で旋回自在となっている。
外蓋52は、天面壁54とこの天面壁54の外周縁部から垂下するスカート壁56とを有する。天面壁54の内面には、その中央において下方に延出する閉塞栓58と、この閉塞栓58の外側において下方に垂下する略円筒形状の外側筒片60が形成されている。本実施形態の閉塞栓58は、図示のとおり中実棒状の形状を有しており、その付け根には案内壁シール部62が形成されている。
An outer lid 52 is connected to the upper end of the mounting wall 24 of the lid body 20 via a hinge means 50. The outer lid 52 is integrally formed with the lid main body 20 (therefore, the outer lid 52 is also made of synthetic resin), and as is known, a closed position for covering the closed wall 22 of the lid main body 20 and an open position for exposing the closed wall 22. It is free to turn between.
The outer lid 52 has a top wall 54 and a skirt wall 56 hanging from the outer peripheral edge of the top wall 54. On the inner surface of the top wall 54, an obstruction plug 58 extending downward at the center thereof and a substantially cylindrical outer cylinder piece 60 hanging downward on the outside of the obstruction plug 58 are formed. As shown in the figure, the obstruction plug 58 of the present embodiment has a solid rod-like shape, and a guide wall sealing portion 62 is formed at the base thereof.

天面壁54の内面における閉塞栓58と外側筒片60との間には、外蓋52を閉位置から開位置に旋回せしめる際に天面壁54の内面に付着した内容液の飛散を防止するための二重円環溝64が形成されている。
スカート壁56の内周面の下端部には、環状被係止突起66が形成されている。ヒンジ手段50と直径方向反対側において、スカート壁56の外周面下端部には、外蓋52を旋回動せしめる際に指を掛けることができる鍔部68が形成されている。
In order to prevent the content liquid adhering to the inner surface of the top wall 54 from scattering when the outer lid 52 is swiveled from the closed position to the open position between the obstruction plug 58 on the inner surface of the top wall 54 and the outer cylinder piece 60. Double annulus groove 64 is formed.
An annular locked projection 66 is formed at the lower end of the inner peripheral surface of the skirt wall 56. On the opposite side of the hinge means 50 in the radial direction, a flange portion 68 on which a finger can be hung when the outer lid 52 is swiveled is formed at the lower end portion of the outer peripheral surface of the skirt wall 56.

次に図2を参照しつつ、本実施形態の容器蓋18に配設される弁体70について説明する。
図示のとおり、本実施形態における弁体70はいわゆる逆止弁が適用されており、以下では弁体70の一例として逆止弁70を例にして説明する。この逆止弁70は、弁部材72と保持部材74とから構成される。
Next, the valve body 70 arranged on the container lid 18 of the present embodiment will be described with reference to FIG. 2.
As shown in the figure, a so-called check valve is applied to the valve body 70 in the present embodiment, and the check valve 70 will be described below as an example of the valve body 70. The check valve 70 is composed of a valve member 72 and a holding member 74.

図1と共に図3を参照して説明すると、ポリエチレン、ゴム、エラストマー、シリコン等の如き比較的軟質である合成樹脂から形成される弁部材72は、略円板形状であって下方に位置する弁部76と、円環形状であって上方に位置する基部78と、弁部76と基部78とを接続する接続部80とを有する。弁部76の上面は、全体として半径方向外方に向かって下方に傾斜する弧状面であり、その上面中央には上方に膨出する膨出部82が形成されている。弁部76の外周面下端部には、半径方向内方に向かって下方に傾斜する逆円錐台形状のシール部84が形成されている。 Explaining with reference to FIG. 3 together with FIG. 1, the valve member 72 formed of a relatively soft synthetic resin such as polyethylene, rubber, elastomer, silicon, etc. has a substantially disk shape and is located below. It has a portion 76, a base portion 78 having an annular shape and located above, and a connecting portion 80 connecting the valve portion 76 and the base portion 78. The upper surface of the valve portion 76 is an arcuate surface that inclines downward in the radial direction as a whole, and a bulging portion 82 that bulges upward is formed in the center of the upper surface thereof. At the lower end of the outer peripheral surface of the valve portion 76, an inverted truncated cone-shaped seal portion 84 that inclines downward in the radial direction is formed.

図1を参照することによって理解されるとおり、弁部76の下面には空間部85が形成されている。空間部85は、断面略半楕円形状の主部85aと、この主部85aの長径方向中央にて上方に突出する凸部85bとから構成されている。接続部80は、周方向に等角度間隔を置いて3個配設されている。夫々の接続部80は、接続基部80aと接続片80bを有する。 As can be understood by referring to FIG. 1, a space portion 85 is formed on the lower surface of the valve portion 76. The space portion 85 is composed of a main portion 85a having a substantially semi-elliptical cross section and a convex portion 85b protruding upward at the center of the main portion 85a in the major axis direction. Three connecting portions 80 are arranged at equal intervals in the circumferential direction. Each connection portion 80 has a connection base portion 80a and a connection piece 80b.

図3(a)を参照することによって理解されるとおり、接続基部80aは、基部78から下方に垂下する円弧状部材である。接続片80bは、接続基部80aの内周面下端部の周方向中央位置から半径方向内方に延出した後に、下方から見て(即ち図3(c)において)時計方向に所定程度円弧状に延出し、次いで再び半径方向内方に延出して弁部76におけるシール部84よりも上方の外周面に接続される帯状部材である。 As understood by referring to FIG. 3A, the connecting base 80a is an arcuate member that hangs downward from the base 78. The connection piece 80b extends inward in the radial direction from the circumferential center position of the lower end of the inner peripheral surface of the connection base 80a, and then has a predetermined arcuate shape in the clockwise direction when viewed from below (that is, in FIG. 3C). It is a strip-shaped member that extends inward again in the radial direction and is connected to the outer peripheral surface of the valve portion 76 above the seal portion 84.

更に、図3(b)を参照することによって明確に理解されるとおり、接続片80bは、全体的に半径方向内方に向かって下方に傾斜している。このことから、弁部76は基部78に対して上下方向に移動可能であり、弁部76が接続基部80aに対して上方に移動した際には、弁部76には接続片80bの弾性力による下向きの復元力が常時作用せしめられる。 Further, as is clearly understood by reference to FIG. 3 (b), the connecting piece 80b is generally inclined downward inward in the radial direction. From this, the valve portion 76 can move in the vertical direction with respect to the base 78, and when the valve portion 76 moves upward with respect to the connection base 80a, the elastic force of the connection piece 80b is applied to the valve portion 76. The downward restoring force is always applied.

図1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より形成される保持部材74は、1又は複数の側壁86と側壁86の下端に接続された略円形底壁88とを有する。側壁86の外周面は、環状保持壁36と接触している。底壁88は、半径方向内方に向かって幾分下方に傾斜せしめられており、底壁88の中央領域には円形連通開口92が規定されている。更に、底壁88には、連通開口92の外周縁においてこれを囲繞して下方に向かって半径方向内方に幾分傾斜して延びる円筒形導入壁94が形成されている。 Explained with reference to FIG. 1, the holding member 74 formed of an appropriate synthetic resin such as polyethylene or polypropylene has one or more side walls 86 and a substantially circular bottom wall 88 connected to the lower end of the side wall 86. .. The outer peripheral surface of the side wall 86 is in contact with the annular holding wall 36. The bottom wall 88 is inclined inward in the radial direction to some extent, and a circular communication opening 92 is defined in the central region of the bottom wall 88. Further, the bottom wall 88 is formed with a cylindrical introduction wall 94 that surrounds the outer peripheral edge of the communication opening 92 and extends downward with a slight radial inward inclination.

上述した逆止弁70は、外蓋52が蓋本体20に対して開位置にある状態で閉塞壁22に装着される。その際には、逆止弁70は、保持部材74の内側に弁部材72を配置して弁部材72が保持部材74によって保持された状態で、閉塞壁22の中央領域22aの下方に位置せしめられ、閉塞壁22に対して上方に強制される。閉塞壁22に対して逆止弁70が上方に強制されると、側壁86の下端と環状保持突条38とが係止することによって弁体70が内包されるように係止して保持される。 The check valve 70 described above is attached to the closing wall 22 with the outer lid 52 in the open position with respect to the lid main body 20. At that time, the check valve 70 is positioned below the central region 22a of the closing wall 22 in a state where the valve member 72 is arranged inside the holding member 74 and the valve member 72 is held by the holding member 74. And forced upward against the obstruction wall 22. When the check valve 70 is forced upward with respect to the closing wall 22, the lower end of the side wall 86 and the annular holding ridge 38 are locked so that the valve body 70 is contained and held. To.

閉塞壁22に逆止弁70が装着された状態にあっては、弁部材72は、基部78の上面が閉塞壁22の下面と密着すると共に接続基部80aの下面が保持部材74の底壁88の上面と密着して上下方向の移動が規制されると共に、基部78の外周面及び接続基部80aの外周面が側壁86の内周面と対向して径方向の移動が規制される。 When the check valve 70 is attached to the closing wall 22, the upper surface of the base 78 of the valve member 72 is in close contact with the lower surface of the closing wall 22, and the lower surface of the connecting base 80a is the bottom wall 88 of the holding member 74. In close contact with the upper surface of the wall, movement in the vertical direction is restricted, and movement in the radial direction is restricted so that the outer peripheral surface of the base 78 and the outer peripheral surface of the connection base 80a face the inner peripheral surface of the side wall 86.

このとき更に、シール部84が底壁88の内周縁部上面から導入壁94までの基端部内周面と当接して、弁部76は接続基部80aに対して幾分上方へ移動させられる。すると、接続部80は上述したとおりの弾性力を有する故に弁部76には下方への復元力が作用し、シール部84は底壁88の内周縁部上面から導入壁94までの基端部内周面と密着し、これにより逆止弁70が閉塞される。
逆止弁70が閉塞壁22に装着された後に、外蓋52が蓋本体20に対して閉位置にせしめられる。
At this time, the seal portion 84 is further brought into contact with the inner peripheral surface of the base end portion from the upper surface of the inner peripheral edge portion of the bottom wall 88 to the introduction wall 94, and the valve portion 76 is moved slightly upward with respect to the connection base portion 80a. Then, since the connecting portion 80 has the elastic force as described above, a downward restoring force acts on the valve portion 76, and the sealing portion 84 is inside the base end portion from the upper surface of the inner peripheral edge portion of the bottom wall 88 to the introduction wall 94. It comes into close contact with the peripheral surface, thereby closing the check valve 70.
After the check valve 70 is attached to the closing wall 22, the outer lid 52 is brought into the closed position with respect to the lid main body 20.

醤油の如き内容物が内側容器層6内に充填された容器2に容器蓋18を装着する際には、容器2の口頸部8に容器蓋18の装着壁24を被嵌し(このとき、シールリング34の先端部外周面は内側容器層6の内周面上端部よりも半径方向内側に位置している)、容器蓋18を容器2に対して下方に強制せしめる。容器蓋18が容器2に対して下方に強制されると、装着壁24に形成された環状可撓性シール片42、環状突条46、及び弧状被係止突条40が順次口頸部8に形成された環状係止突条12を弾性的に乗り越え、環状可撓性シール片42の先端部の下面が環状突出部14の上面に密接されると共に、弧状被係止突条40が環状係止突条12に係止される。 When the container lid 18 is attached to the container 2 in which the contents such as soy sauce are filled in the inner container layer 6, the attachment wall 24 of the container lid 18 is fitted to the mouth neck 8 of the container 2 (at this time). , The outer peripheral surface of the tip of the seal ring 34 is located radially inside the upper end of the inner peripheral surface of the inner container layer 6), and the container lid 18 is forced downward with respect to the container 2. When the container lid 18 is forced downward with respect to the container 2, the annular flexible seal piece 42, the annular ridge 46, and the arc-shaped locked ridge 40 formed on the mounting wall 24 sequentially form the mouth neck 8. The annular locking ridge 12 formed in the ring is elastically overcome, the lower surface of the tip of the annular flexible seal piece 42 is brought into close contact with the upper surface of the annular protrusion 14, and the arc-shaped locked ridge 40 is annular. It is locked to the locking ridge 12.

環状可撓性シール片42が環状係止突条12を弾性的に乗り越える際には、環状可撓性シール片42の基端と環状突条46の基端との軸線方向離隔寸法Lが環状可撓性シール片42の半径方向突出寸法D1、D2よりも小さいことに起因して、環状可撓性シール片42の上面が環状突条46と当接しこれによって環状可撓性シール片42が過剰に撓むことが回避され、環状可撓性シール片42が反転することが防止される。このとき更に、閉塞壁22に形成されたシールリング34は容器2の内部、更に詳しくは内側容器層6の内部、に進入すると共にこれを半径方向外方に弾性的に押圧する。
これにより、シールリング34の外周面が内側容器層6の上端部内周面と密着し、内容物がシールリング34の外側を通過して内側容器層6(即ち容器2)の外部に流出することが阻止される。かくして、容器蓋18は容器2の口頸部8に装着される。
When the annular flexible seal piece 42 elastically overcomes the annular locking ridge 12, the axial separation dimension L between the base end of the annular flexible seal piece 42 and the base end of the annular ridge 46 is annular. Due to being smaller than the radial protrusions D1 and D2 of the flexible seal piece 42, the upper surface of the annular flexible seal piece 42 abuts on the annular ridge 46, thereby causing the annular flexible seal piece 42 to abut. Excessive bending is avoided and the annular flexible seal piece 42 is prevented from flipping. At this time, the seal ring 34 formed on the closed wall 22 enters the inside of the container 2, more specifically, the inside of the inner container layer 6, and elastically presses the inner container layer 6 outward in the radial direction.
As a result, the outer peripheral surface of the seal ring 34 is in close contact with the inner peripheral surface of the upper end portion of the inner container layer 6, and the contents pass through the outside of the seal ring 34 and flow out to the outside of the inner container layer 6 (that is, the container 2). Is blocked. Thus, the container lid 18 is attached to the mouth and neck 8 of the container 2.

以上に加え、上述したとおり本実施形態における環状可撓性シール片42は、周方向において相対的に厚みが増大した厚肉部を有している。そして容器2の口頸部8に容器蓋18が嵌合され、外側容器層4のうち導入手段10よりも下方に形成された環状突出部14の上面と環状可撓性シール片42の下面とが密接するとき、上記した厚肉部の終端付近において環状突出部14と環状可撓性シール片42との間に外気導通隙間AHが形成される。
なお本実施形態における「厚肉部の終端付近」とは、厚肉部の周方向端部と隣接する通常肉厚厚部との厚み差から生じる空間に近接する境界領域を言う。
In addition to the above, as described above, the annular flexible seal piece 42 in the present embodiment has a thick portion having a relatively increased thickness in the circumferential direction. Then, the container lid 18 is fitted to the mouth neck 8 of the container 2, and the upper surface of the annular protrusion 14 formed below the introduction means 10 in the outer container layer 4 and the lower surface of the annular flexible seal piece 42. When they are in close contact with each other, an outside air conduction gap AH is formed between the annular protrusion 14 and the annular flexible seal piece 42 near the end of the thick portion.
The term "near the end of the thick portion" in the present embodiment means a boundary region close to the space generated by the thickness difference between the circumferential end portion of the thick portion and the adjacent normal thick portion.

環状可撓性シール片42の周方向における厚肉部の位置・大きさや個数については特に制限はないが、例えば図2に示すとおり、環状可撓性シール片42の周方向において複数の肉厚部42a及び42bを配置してもよい。なお図2に示す例では、2つの厚肉部が周方向に沿って形成されているが、かような厚肉部は2つに限らず3つ以上の複数個であってもよい。
このとき図2に示す例では、複数の厚肉部42a及び42bは、環状可撓性シール片42の中心を基準として互いに対向するように配置されていることが好ましい。また、複数の厚肉部42a及び42bは、周方向に関して互いに近接しないように形成されていることが好ましい。
さらに複数の厚肉部は実質的に同じ幅を有していてもよく、図4に示すように、厚肉部42aの幅W1と厚肉部42bの幅W2は、周方向に関して互いに等しくなるように形成されている。なお厚肉部42aの幅W1と厚肉部42bの幅W2は、互いに異なる値としてもよい。
The position, size, and number of thick portions in the circumferential direction of the annular flexible seal piece 42 are not particularly limited, but as shown in FIG. 2, for example, a plurality of wall thicknesses in the circumferential direction of the annular flexible seal piece 42. The portions 42a and 42b may be arranged. In the example shown in FIG. 2, two thick portions are formed along the circumferential direction, but the number of such thick portions is not limited to two and may be three or more.
At this time, in the example shown in FIG. 2, it is preferable that the plurality of thick portions 42a and 42b are arranged so as to face each other with respect to the center of the annular flexible seal piece 42. Further, it is preferable that the plurality of thick portions 42a and 42b are formed so as not to be close to each other in the circumferential direction.
Further, the plurality of thick portions may have substantially the same width, and as shown in FIG. 4, the width W1 of the thick portion 42a and the width W2 of the thick portion 42b are equal to each other in the circumferential direction. It is formed like this. The width W1 of the thick portion 42a and the width W2 of the thick portion 42b may have different values.

また、環状可撓性シール片42における厚肉部とその他の部位(以下、その他の部位を「非厚肉部」とも称する)の厚み差について特に制限はなく、厚肉部の終端付近において環状突出部14と環状可撓性シール片42との間に外気導通隙間AHが形成される範囲において種々の値を設定してもよい。
ここで、図5(a)は環状可撓性シール片42における厚肉部以外の部位を示し、図5(b)は環状可撓性シール片42における厚肉部を示している。
このとき、厚肉部以外の部位における厚みE1は、厚肉部における厚みE2よりも小さくなるように設計されている。一例として、本実施形態では、例えば厚みE1は0.3mmであり、厚みE2は0.35mmとなっている。したがって、装着壁24の底面から環状可撓性シール片42(非厚肉部)までの高さH1は、装着壁24の底面から環状可撓性シール片42(厚肉部)までの高さH2よりも若干高くなっている。
一方で装着壁24の内面から径方向内側に突出する環状可撓性シール片42(非厚肉部)の突出量D1と、装着壁24の内面から径方向内側に突出する環状可撓性シール片42(厚肉部)の突出量D2は、ほぼ等しくなるように設定されている。
Further, there is no particular limitation on the thickness difference between the thick portion and the other portion (hereinafter, the other portion is also referred to as “non-thick portion”) in the annular flexible seal piece 42, and the annular portion is formed near the end of the thick portion. Various values may be set within a range in which an outside air conduction gap AH is formed between the protrusion 14 and the annular flexible seal piece 42.
Here, FIG. 5A shows a portion other than the thick portion in the annular flexible seal piece 42, and FIG. 5B shows the thick portion in the annular flexible seal piece 42.
At this time, the thickness E1 in the portion other than the thick portion is designed to be smaller than the thickness E2 in the thick portion. As an example, in the present embodiment, for example, the thickness E1 is 0.3 mm and the thickness E2 is 0.35 mm. Therefore, the height H1 from the bottom surface of the mounting wall 24 to the annular flexible seal piece 42 (non-thick wall portion) is the height from the bottom surface of the mounting wall 24 to the annular flexible seal piece 42 (thick wall portion). It is slightly higher than H2.
On the other hand, the amount of protrusion D1 of the annular flexible seal piece 42 (non-thick wall portion) protruding radially inward from the inner surface of the mounting wall 24 and the annular flexible seal protruding radially inward from the inner surface of the mounting wall 24. The protrusion amount D2 of the piece 42 (thick wall portion) is set to be substantially equal.

このように本実施形態では、環状可撓性シール片42のうち外側容器層4の環状突出部14と接触する側に厚肉部42a、42bが形成されているため、その終端付近では厚み差に起因する段差が形成される。そして環状突出部14も樹脂材料で形成されていることからある程度の剛性があるため、この段差があることに起因して環状可撓性シール片42が環状突出部14と接触した際には厚肉部の終端付近に外気導通隙間AHが形成されることになる。 As described above, in the present embodiment, since the thick portions 42a and 42b are formed on the side of the annular flexible seal piece 42 that comes into contact with the annular protrusion 14 of the outer container layer 4, the thickness difference is formed near the end thereof. A step is formed due to the above. Since the annular protrusion 14 is also made of a resin material, it has a certain degree of rigidity. Therefore, when the annular flexible seal piece 42 comes into contact with the annular protrusion 14 due to this step, the thickness is increased. An outside air conduction gap AH is formed near the end of the meat portion.

一例として、実際に外気導通隙間AHが形成される厚肉部の例を図6に示す。
図6(a)は環状可撓性シール片42のうち厚肉部42aが環状突出部14の上面と接触した状態を示し、図6(b)は環状可撓性シール片42のうち厚肉部42aの終端付近で外気導通隙間AHが形成されている状態を示し、図6(c)では環状可撓性シール片42のうち非厚肉部が環状突出部14の上面と接触した状態を示している。なお図6(b)においては、説明の便宜上、実線をさらに付加して外気導通隙間AHを誇張して明瞭化することとした。
上記から明らかなとおり、本実施形態では、容器蓋18が容器2の口頸部8に嵌合された際、換言すれば環状突出部14の上面と環状可撓性シール片42の下面とが密接するとき、厚肉部の終端付近で外気導通隙間AHが常時形成された状態となる。
As an example, FIG. 6 shows an example of a thick portion in which an outside air conduction gap AH is actually formed.
FIG. 6 (a) shows a state in which the thick portion 42a of the annular flexible seal piece 42 is in contact with the upper surface of the annular protrusion 14, and FIG. 6 (b) shows the thick wall portion of the annular flexible seal piece 42. A state in which an outside air conduction gap AH is formed near the end of the portion 42a is shown, and in FIG. 6C, a state in which the non-thick portion of the annular flexible seal piece 42 is in contact with the upper surface of the annular protrusion 14 is shown. Shows. In FIG. 6B, for convenience of explanation, a solid line is further added to exaggerate and clarify the outside air conduction gap AH.
As is clear from the above, in the present embodiment, when the container lid 18 is fitted to the mouth neck 8 of the container 2, in other words, the upper surface of the annular protrusion 14 and the lower surface of the annular flexible seal piece 42 are formed. When they are in close contact with each other, an outside air conduction gap AH is always formed near the end of the thick portion.

そして本実施形態によれば、外気導通隙間AHが常時形成された状態であるので、この外気導通隙間AHを介して容器の復元時によりスムーズに外気を取り込むことが可能となり、容器の復元性が格段に向上して連続した内容物の吐出を可能ならしめることになる。
また、外気導通隙間AHは厚肉部の終端付近においてだけ形成されるため、内容物を吐出する際に当該外気導通隙間AHから過剰に空気が漏れることなく安定した量の内容物を吐出することが可能となっている。
According to the present embodiment, since the outside air conduction gap AH is always formed, it is possible to take in the outside air more smoothly when the container is restored through the outside air conduction gap AH, and the stability of the container is improved. It will be significantly improved and will enable continuous discharge of contents.
Further, since the outside air conduction gap AH is formed only near the end of the thick portion, when the contents are discharged, a stable amount of the contents should be discharged without excessive air leakage from the outside air conduction gap AH. Is possible.

なお容器の内容物を吐出する際には、先ず、外蓋52の鍔部68に指を掛けて外蓋52を上方に強制せしめ、外蓋52の環状被係止突起66を、蓋本体20の環状係止突起32から弾性的に離脱させて、外蓋52を開位置に向けて旋回動せしめ、かくして閉塞壁22を露呈せしめる。そして、容器2の側面を把持して適宜に傾斜せしめ、容器2を圧搾する。容器2が圧搾されることで、外側容器層4と共に内側容器層6も圧搾され、内側容器層6内の圧力が容器2外の圧力よりも大きくなる。 When discharging the contents of the container, first, a finger is put on the flange portion 68 of the outer lid 52 to force the outer lid 52 upward, and the annular locked projection 66 of the outer lid 52 is attached to the lid main body 20. The outer lid 52 is swiveled toward the open position by being elastically disengaged from the annular locking projection 32 of the above, thus exposing the closed wall 22. Then, the side surface of the container 2 is grasped and tilted appropriately to squeeze the container 2. When the container 2 is squeezed, the inner container layer 6 is squeezed together with the outer container layer 4, and the pressure inside the inner container layer 6 becomes larger than the pressure outside the container 2.

そして、内側容器層6内の圧力が容器2外の圧力(即ち、閉塞壁22の内側の圧力が外側の圧力)よりも所定値以上大きくなると、逆止弁70の弁部76が上述した接続部80の弾性力に抗して上方に移動せしめられ、シール部84が底壁88の内周縁部上面乃至導入壁94の基端部内周面から離隔し、逆止弁70が開放される。
この際には、弁部76の下面に主部85aと凸部85bとから構成される空間部85が形成されていることに起因して、内側容器層6内の圧力によって弁部76を上方へ移動させようとする応力が弁部76の下面に効率的に作用し、弁部76は円滑に上方へ移動せしめられる。逆止弁70が開放されると、内側容器層6内に充填された内容物が連通開口92、逆止弁70(更に詳しくは弁部材72と保持部材74との間)、そして排出開口26を順次通過した後に案内壁28から排出される。
Then, when the pressure inside the inner container layer 6 becomes larger than the pressure outside the container 2 (that is, the pressure inside the closing wall 22 is the outside pressure) by a predetermined value or more, the valve portion 76 of the check valve 70 is connected as described above. It is moved upward against the elastic force of the portion 80, the seal portion 84 is separated from the upper surface of the inner peripheral edge portion of the bottom wall 88 and the inner peripheral surface of the base end portion of the introduction wall 94, and the check valve 70 is opened.
At this time, due to the formation of the space portion 85 composed of the main portion 85a and the convex portion 85b on the lower surface of the valve portion 76, the pressure in the inner container layer 6 causes the valve portion 76 to move upward. The stress to move to the valve portion 76 efficiently acts on the lower surface of the valve portion 76, and the valve portion 76 is smoothly moved upward. When the check valve 70 is opened, the contents filled in the inner container layer 6 are the communication opening 92, the check valve 70 (more specifically, between the valve member 72 and the holding member 74), and the discharge opening 26. Is sequentially passed through the guide wall 28 and then discharged from the guide wall 28.

内容物の排出を停止する際には、容器2の側面の圧搾を解除する。容器2の側面の圧搾が解除されると、内側容器層6内の圧力は容器2外の圧力と等しくなるため、逆止弁70の弁部76が接続部80の上述した復元力によって下方に移動せしめられ、シール部84が底壁88の内周縁部上面から導入壁94までの基端部内周面と密着し、逆止弁70が封止される。これにより内容物の排出が停止すると共に内側容器層6は密閉される。 When stopping the discharge of the contents, the pressing of the side surface of the container 2 is released. When the squeezing of the side surface of the container 2 is released, the pressure inside the inner container layer 6 becomes equal to the pressure outside the container 2, so that the valve portion 76 of the check valve 70 is lowered by the above-mentioned restoring force of the connection portion 80. After being moved, the seal portion 84 is brought into close contact with the inner peripheral surface of the base end portion from the upper surface of the inner peripheral edge portion of the bottom wall 88 to the introduction wall 94, and the check valve 70 is sealed. As a result, the discharge of the contents is stopped and the inner container layer 6 is sealed.

この際には、弁部76の上面が全体として半径方向外方に向かって下方に傾斜する弧状面であることに起因して、弁部76の上面に残留した内容物は半径方向外方に向かって案内される。内容物の排出が停止すると共に内側容器層6が密閉された際には更に、外側容器層4は自身の有する弾性力により復元、即ち圧搾された状態から元の有底筒壁形状に膨張し、これによって外側容器層4と内側容器層6との間が負圧となる。そして、外側容器層4と内側容器層6との間の圧力が外気の圧力よりも所定値以上小さくなると、図7に二点鎖線で示すように、負圧によって蓋本体20の環状可撓性シール片42の先端部が外側容器層4の口頸部8の外周面に形成された環状突出部14の上面から離隔されて隙間ができ、この隙間を通って外気が導入手段10から外側容器層4と内側容器層6との間に導入される。 At this time, the contents remaining on the upper surface of the valve portion 76 are radially outward due to the fact that the upper surface of the valve portion 76 is an arcuate surface that inclines downward in the radial direction as a whole. You will be guided towards. When the discharge of the contents is stopped and the inner container layer 6 is sealed, the outer container layer 4 is further restored by its own elastic force, that is, it expands from the squeezed state to the original bottomed tubular wall shape. As a result, a negative pressure is created between the outer container layer 4 and the inner container layer 6. Then, when the pressure between the outer container layer 4 and the inner container layer 6 becomes smaller than the pressure of the outside air by a predetermined value or more, as shown by the two-point chain line in FIG. 7, the annular flexibility of the lid body 20 is caused by the negative pressure. The tip of the seal piece 42 is separated from the upper surface of the annular protrusion 14 formed on the outer peripheral surface of the mouth neck 8 of the outer container layer 4 to form a gap, and the outside air is introduced from the introduction means 10 to the outer container through this gap. It is introduced between the layer 4 and the inner container layer 6.

外側容器層4と内側容器層6との間の圧力が外気の圧力と等しくなると、図7に実線で示すように、環状可撓性シール片42は元の状態に復元し、環状可撓性シール片42の先端部の下面は環状突出部14の上面に再度密接される。しかる後に、外蓋52を開位置から閉位置に向かって旋回動せしめて、外蓋52の環状被係止突起66を蓋本体20の環状係止突起32に弾性的に係止する。かくして外蓋52が閉位置にせしめられる。 When the pressure between the outer container layer 4 and the inner container layer 6 becomes equal to the pressure of the outside air, the annular flexible seal piece 42 is restored to its original state and is annular flexible, as shown by the solid line in FIG. The lower surface of the tip of the seal piece 42 is brought into close contact with the upper surface of the annular protrusion 14 again. After that, the outer lid 52 is swiveled from the open position to the closed position, and the annular locked projection 66 of the outer lid 52 is elastically locked to the annular locking projection 32 of the lid main body 20. Thus, the outer lid 52 is closed.

外蓋52が閉位置に位置せしめられると、外蓋52の閉塞栓58の先端は閉塞壁22の排出開口26を通って逆止弁70の膨出部82と当接しこれを下方に押圧せしめる。これにより、弁部材72のシール部84と保持部材74における底壁88の内周縁部上面乃至導入壁94の基端部内周面との密着がより強固になり、逆止弁70(更に詳しくは弁部材72と保持部材74との間)から内容物が漏れ出てくることがより一層確実に防止される。 When the outer lid 52 is positioned in the closed position, the tip of the closing plug 58 of the outer lid 52 passes through the discharge opening 26 of the closing wall 22 and comes into contact with the bulging portion 82 of the check valve 70 to press it downward. .. As a result, the close contact between the seal portion 84 of the valve member 72 and the upper surface of the inner peripheral edge portion of the bottom wall 88 of the holding member 74 or the inner peripheral surface of the base end portion of the introduction wall 94 becomes stronger, and the check valve 70 (more specifically, more specifically. It is more reliably prevented that the contents leak out from (between the valve member 72 and the holding member 74).

また、外蓋52の案内壁シール部62が蓋本体20の案内壁28内に進入して案内壁シール部62の外周面下端部が案内壁28の基端部内周面に密着されると共に、外側筒片60の内周面下端部が案内壁28のリップ部の先端部外周面と密着し、逆止弁70と排出開口26との間に残留した内容物が排出開口26を通過して蓋本体20の外部に漏れ出ることも防止される。 Further, the guide wall seal portion 62 of the outer lid 52 enters the guide wall 28 of the lid main body 20, and the lower end of the outer peripheral surface of the guide wall seal portion 62 is brought into close contact with the inner peripheral surface of the base end portion of the guide wall 28. The lower end of the inner peripheral surface of the outer cylinder piece 60 is in close contact with the outer peripheral surface of the tip of the lip portion of the guide wall 28, and the content remaining between the check valve 70 and the discharge opening 26 passes through the discharge opening 26. Leakage to the outside of the lid body 20 is also prevented.

[第2実施形態]
以下、本発明の第2実施形態について説明するが、第1実施形態と機能・作用が共通する構成は同じ参照番号を付してその説明や図示を適宜省略する(後述する変形例においても同様)。
図8は、第2実施形態に係る容器蓋18を底面の側から見た底面図である。
上記した第1実施形態では、環状可撓性シール片42の周方向において複数の厚肉部が形成されていた。これに対して本実施形態では、環状可撓性シール片42の周方向において単一の厚肉部が形成されている点に主とした特徴がある。
[Second Embodiment]
Hereinafter, the second embodiment of the present invention will be described, but the configurations having the same functions and functions as those of the first embodiment are designated by the same reference numbers, and the description and illustration thereof are appropriately omitted (the same applies to the modifications described later). ).
FIG. 8 is a bottom view of the container lid 18 according to the second embodiment as viewed from the bottom surface side.
In the first embodiment described above, a plurality of thick portions are formed in the circumferential direction of the annular flexible seal piece 42. On the other hand, the present embodiment is mainly characterized in that a single thick portion is formed in the circumferential direction of the annular flexible seal piece 42.

すなわち同図に示すとおり、本実施形態の環状可撓性シール片42は、環状可撓性シール片42の中心を基準としてヒンジ手段50と対向するように厚肉部が形成されている。
本実施形態においても、容器蓋18が容器2の口頸部8に嵌合された際、換言すれば環状突出部14の上面と環状可撓性シール片42の下面とが密接するとき、1つの厚肉部における終端付近でそれぞれ外気導通隙間AHが常時形成された状態となる。なお、第1実施形態では2つの厚肉部42a及び42bによって合計4つの外気導通隙間AHが常時形成された状態であったが、本実施形態では1つの厚肉部42cで2つの外気導通隙間AHが常時形成された状態となっている。
That is, as shown in the figure, the annular flexible seal piece 42 of the present embodiment has a thick portion formed so as to face the hinge means 50 with the center of the annular flexible seal piece 42 as a reference.
Also in the present embodiment, when the container lid 18 is fitted to the mouth neck portion 8 of the container 2, in other words, when the upper surface of the annular protrusion 14 and the lower surface of the annular flexible seal piece 42 are in close contact with each other, 1 The outside air conduction gap AH is always formed near the end of each thick portion. In the first embodiment, a total of four outside air conduction gaps AH were always formed by the two thick portions 42a and 42b, but in the present embodiment, one thick portion 42c has two outside air conduction gaps. AH is always formed.

そして本実施形態によっても、複数の外気導通隙間AHが常時形成された状態であるので、これらの外気導通隙間AHを介して容器の復元時によりスムーズに外気を取り込むことが可能となり、連続した内容物の吐出を可能ならしめることになる。 Further, also in this embodiment, since a plurality of outside air conduction gaps AH are always formed, it is possible to take in outside air more smoothly when the container is restored through these outside air conduction gaps AH, and the contents are continuous. It will make it possible to discharge objects.

なお上記した各実施形態は、本発明の趣旨を逸脱しない範囲で種々の変形が可能である。
例えば、厚肉部における終端両側付近で外気導通隙間AHを常時形成する例を説明したが、外気導通隙間AHの大きさを調整する(換言すれば上記した段差の大きさを調整する)ことで厚肉部の終端うち少なくとも一方で外気導通隙間AHが常時形成される形態であってもよい。このとき、厚肉部の終端付近のうち外気導通隙間AHを形成しない側は、厚肉部と非厚肉部との境界で略垂直の段差を形成せずに徐々に厚みが変化するスロープ状としてもよい。
It should be noted that each of the above-described embodiments can be modified in various ways without departing from the spirit of the present invention.
For example, an example of constantly forming an outside air conduction gap AH near both ends of a thick portion has been described, but by adjusting the size of the outside air conduction gap AH (in other words, adjusting the size of the above-mentioned step). At least one of the ends of the thick portion may have a form in which an outside air conduction gap AH is always formed. At this time, the side near the end of the thick portion that does not form the outside air conduction gap AH has a slope shape in which the thickness gradually changes without forming a substantially vertical step at the boundary between the thick portion and the non-thick portion. May be.

また、上記実施形態で説明した厚肉部と非厚肉部の厚みは一例であって、容器蓋18として用いる材料の剛性や容器2として用いる材料の剛性に応じて、適宜調整してもよい。
また、容器2に保存される内容物として醤油を例にして説明したが、これに限られず酸化を嫌う嫌酸化性の他の調味料などの液体であってもよい。
また、第2実施形態では、厚肉部の終端うち外気導通隙間AHを形成しない側はスロープ状でもよいとしたが、容器蓋18として用いる材料として比較的高い剛性のものを用いるなどすれば、厚肉部の終端付近のうち外気導通隙間AHを形成する側をスロープ状としてもよい。
Further, the thickness of the thick portion and the non-thick portion described in the above embodiment is an example, and may be appropriately adjusted according to the rigidity of the material used as the container lid 18 and the rigidity of the material used as the container 2. ..
Further, the content to be stored in the container 2 has been described by taking soy sauce as an example, but the present invention is not limited to this, and a liquid such as another oxidative seasoning that dislikes oxidation may be used.
Further, in the second embodiment, the side of the end of the thick portion that does not form the outside air conduction gap AH may be slope-shaped, but if a material having a relatively high rigidity is used as the material used for the container lid 18, Of the vicinity of the end of the thick portion, the side forming the outside air conduction gap AH may be formed in a slope shape.

また、上記した各実施形態では、容器2の例として二重容器を例にして説明したが、この例に限られず口頸部8が設けられる限りにおいてパウチなど他の公知の形態であってもよい。また、容器蓋18はヒンジ手段50を備えておらずともよく、さらにはスパウトのごとき形態であってもよい。
また、上記した各実施形態では、弁体70の一例として逆止弁を例にして説明したが、密封可能な弁構造であれば他の公知の弁構造を用いてもよい。
Further, in each of the above-described embodiments, a double container has been described as an example of the container 2, but the present invention is not limited to this example, and other known forms such as a pouch may be used as long as the mouth and neck 8 is provided. good. Further, the container lid 18 does not have to be provided with the hinge means 50, and may be in the form of a spout.
Further, in each of the above-described embodiments, the check valve has been described as an example of the valve body 70, but other known valve structures may be used as long as the valve structure can be sealed.

また、上記した各実施形態では、環状可撓性シール片42に形成される厚肉部は根本(装着壁24側)から一様な厚みで形成されていたが、この例に限られず少なくとも外側容器層4の環状突出部14と接触する部位で厚みが増した形態となっていてもよい。
また、上記した各実施形態では、環状可撓性シール片42は装着壁24に一体として形成されていたが、この例に限られず別途形成した環状可撓性シール片42を装着壁24に固着(接着または融着)してもよい。
Further, in each of the above-described embodiments, the thick portion formed on the annular flexible seal piece 42 is formed to have a uniform thickness from the root (mounting wall 24 side), but the present invention is not limited to this example and at least the outside. The thickness may be increased at the portion of the container layer 4 that comes into contact with the annular protrusion 14.
Further, in each of the above-described embodiments, the annular flexible seal piece 42 is integrally formed with the mounting wall 24, but the present invention is not limited to this example, and the separately formed annular flexible seal piece 42 is fixed to the mounting wall 24. (Adhesion or fusion) may be used.

上記した各実施形態では、外気導通隙間AHを形成するための厚肉部を環状可撓性シール片42の側に設けた例を説明したが、この例に限られず容器2側の環状突出部14側に厚肉部を設けてもよい。
この場合における容器2´は、外側容器層4と内側容器層6とを有してスクイズにより内容物を排出可能な容器2´であって、この容器2´の口頸部8には、内容物が通過する排出開口26が形成される閉塞壁22と当該閉塞壁22の外周縁部から垂下する装着壁24と当該装着壁24の内周面から半径方向内方に延出する環状可撓性シール片42とを有する容器蓋18が嵌合可能である。
In each of the above-described embodiments, an example in which a thick portion for forming the outside air conduction gap AH is provided on the side of the annular flexible seal piece 42 has been described, but the present invention is not limited to this example, and the annular protrusion on the container 2 side is described. A thick portion may be provided on the 14 side.
In this case, the container 2'is a container 2'having an outer container layer 4 and an inner container layer 6 and capable of discharging the contents by squeezing, and the mouth neck 8 of the container 2'has contents. The closed wall 22 in which the discharge opening 26 through which an object passes is formed, the mounting wall 24 hanging from the outer peripheral edge of the closed wall 22, and the annular flexibility extending inward in the radial direction from the inner peripheral surface of the mounting wall 24. The container lid 18 having the sex seal piece 42 can be fitted.

さらに容器2´のうち口頸部8の外側面には、容器蓋18と嵌合する環状係止突条12(容器蓋嵌合部)と、この容器蓋嵌合部よりも下方に形成されるとともに外側容器層4と内側容器層6の間に外気を導入する導入手段10と、この導入手段10よりも下方に形成されるとともに口頸部8の周方向において相対的に厚みが導入手段10の側へ増大した厚肉部を有する環状突出部14と、が形成されている。
なお、環状突出部14に形成される厚肉部の大きさや厚み又は数は、上記各実施形態で説明した厚肉部と同様とすることができる。
Further, on the outer surface of the mouth neck 8 of the container 2', an annular locking ridge 12 (container lid fitting portion) that fits with the container lid 18 and a lower portion of the container lid fitting portion are formed. In addition, the introduction means 10 for introducing outside air between the outer container layer 4 and the inner container layer 6, and the introduction means formed below the introduction means 10 and having a relative thickness in the circumferential direction of the mouth and neck portion 8. An annular protrusion 14 having a thickened portion increased to the side of 10 is formed.
The size, thickness, or number of the thick portion formed on the annular protrusion 14 can be the same as that of the thick portion described in each of the above embodiments.

そして容器2´の口頸部8に容器蓋18(この容器蓋18の環状可撓性シール片42には厚肉部が形成されていない)が嵌合されて環状突出部14の上面と環状可撓性シール片42の下面とが密接するとき、環状突出部14の厚肉部の終端付近において環状突出部14と環状可撓性シール片42との間に同様の外気導通隙間AHが形成される。
このように、本発明の厚肉部は、環状可撓性シール片42の側に形成されていてもよく、環状突出部14の側に形成されていてもよく、あるいはその両方に形成されていてもよい。換言すれば、本発明の厚肉部は、環状可撓性シール片42と環状突出部14の少なくとも一方の側に形成されていればよい。
Then, the container lid 18 (the annular flexible seal piece 42 of the container lid 18 does not have a thick wall portion) is fitted to the mouth neck 8 of the container 2', and is annular with the upper surface of the annular protrusion 14. When the lower surface of the flexible seal piece 42 is in close contact, a similar outside air conduction gap AH is formed between the annular protrusion 14 and the annular flexible seal piece 42 near the end of the thick portion of the annular protrusion 14. Will be done.
As described above, the thick portion of the present invention may be formed on the side of the annular flexible seal piece 42, may be formed on the side of the annular protrusion 14, or may be formed on both of them. You may. In other words, the thick portion of the present invention may be formed on at least one side of the annular flexible seal piece 42 and the annular protrusion 14.

本発明の容器蓋などは、液体保存容器の分野において連続吐出が可能な程度に容器を早く復元することが可能な構造を提供するのに適している。 The container lid and the like of the present invention are suitable for providing a structure capable of quickly restoring a container to the extent that continuous discharge is possible in the field of a liquid storage container.

2、2´ 容器
4 外側容器層
6 内側容器層
8 口頸部
10 孔(導入手段)
18 容器蓋
20 蓋本体
22 閉塞壁
24 装着壁
26 排出開口
42 環状可撓性シール片
42a、42b 厚肉部
44 捨てアンダーカット
52 外蓋
70 弁体(逆止弁)
2, 2'Container 4 Outer container layer 6 Inner container layer 8 Mouth neck 10 holes (introduction means)
18 Container lid 20 Lid body 22 Closure wall 24 Mounting wall 26 Discharge opening 42 Circular flexible seal pieces 42a, 42b Thick part 44 Discard undercut 52 Outer lid 70 Valve body (check valve)

Claims (9)

外側容器層と内側容器層との間に外気を導入するための導入手段と容器蓋嵌合部と環状突出部とが口頸部に形成された、スクイズにより内容物を排出可能な容器に対し、該容器の口頸部に嵌合される容器蓋であって、
前記容器蓋は、前記容器の内容物が通過する排出開口が形成されると共に、該排出開口を閉じる弁体が配設される閉塞壁と、
前記閉塞壁の外周縁部から垂下し、内面に容器嵌合部を有する装着壁と、
前記装着壁に形成されて当該装着壁の内周面から半径方向内方に延出するとともに、周方向において相対的に厚みが増大した厚肉部を有する環状可撓性シール片と、を具備し、
前記口頸部に前記容器蓋が嵌合され、前記外側容器層のうち前記導入手段よりも下方に形成された前記環状突出部の上面と前記環状可撓性シール片の下面とが密接するとき、前記厚肉部の終端付近において前記環状突出部と前記環状可撓性シール片との間に外気導通隙間が形成され
前記装着壁の内周面には、前記環状可撓性シール片が一体に形成されていると共に前記環状可撓性シール片の上方に位置する捨てアンダーカットが形成されていることを特徴とする容器蓋。
For a container in which the contents can be discharged by squeeze, in which an introduction means for introducing outside air between the outer container layer and the inner container layer, a container lid fitting portion, and an annular protrusion are formed in the mouth and neck. , A container lid that is fitted to the mouth and neck of the container.
The container lid has a closing wall in which a discharge opening through which the contents of the container pass is formed and a valve body for closing the discharge opening is arranged.
A mounting wall that hangs from the outer peripheral edge of the closed wall and has a container fitting portion on the inner surface.
It is provided with an annular flexible seal piece formed on the mounting wall and extending inward in the radial direction from the inner peripheral surface of the mounting wall and having a thick portion having a relatively increased thickness in the circumferential direction. death,
When the container lid is fitted to the mouth and neck, and the upper surface of the annular protrusion formed below the introduction means in the outer container layer and the lower surface of the annular flexible seal piece are in close contact with each other. An outside air conduction gap is formed between the annular protrusion and the annular flexible seal piece near the end of the thick portion.
The inner peripheral surface of the mounting wall is characterized in that the annular flexible seal piece is integrally formed and a discard undercut located above the annular flexible seal piece is formed . Container lid.
外側容器層と内側容器層との間に外気を導入するための導入手段と容器蓋嵌合部と環状突出部とが口頸部に形成された、スクイズにより内容物を排出可能な容器に対し、該容器の口頸部に嵌合される容器蓋であって、For a container in which the contents can be discharged by squeeze, in which an introduction means for introducing outside air between the outer container layer and the inner container layer, a container lid fitting portion, and an annular protrusion are formed in the mouth and neck. , A container lid that is fitted to the mouth and neck of the container.
前記容器蓋は、前記容器の内容物が通過する排出開口が形成されると共に、該排出開口を閉じる弁体が配設される閉塞壁と、The container lid has a closing wall in which a discharge opening through which the contents of the container pass is formed and a valve body for closing the discharge opening is arranged.
前記閉塞壁の外周縁部から垂下し、内面に容器嵌合部を有する装着壁と、A mounting wall that hangs from the outer peripheral edge of the closed wall and has a container fitting portion on the inner surface.
前記装着壁に形成されて当該装着壁の内周面から半径方向内方に延出するとともに、周方向において相対的に厚みが増大した厚肉部を有する環状可撓性シール片と、を具備し、It is provided with an annular flexible seal piece formed on the mounting wall and extending inward in the radial direction from the inner peripheral surface of the mounting wall and having a thick portion having a relatively increased thickness in the circumferential direction. death,
前記口頸部に前記容器蓋が嵌合され、前記外側容器層のうち前記導入手段よりも下方に形成された前記環状突出部の上面と前記環状可撓性シール片の下面とが密接するとき、前記厚肉部の終端付近において前記環状突出部と前記環状可撓性シール片との間に外気導通隙間が形成され、When the container lid is fitted to the mouth and neck, and the upper surface of the annular protrusion formed below the introduction means in the outer container layer and the lower surface of the annular flexible seal piece are in close contact with each other. An outside air conduction gap is formed between the annular protrusion and the annular flexible seal piece near the end of the thick portion.
前記環状可撓性シール片は、前記装着壁の内周面に一体に形成されていると共に前記半径方向内方に向かって且つ下方に傾斜して延出することを特徴とする容器蓋。The annular flexible seal piece is a container lid that is integrally formed on the inner peripheral surface of the mounting wall and extends inward and downward in the radial direction.
前記外気導通隙間は、前記容器をスクイズする際において、該外側容器層と該内側容器層との間の内気の流出を許容しない隙間である請求項1又は2に記載の容器蓋。 The container lid according to claim 1 or 2 , wherein the outside air conduction gap is a gap that does not allow the outflow of inside air between the outer container layer and the inner container layer when the container is squeezed. 前記外気導通隙間は、容器をスクイズ解除後において、該外側容器層と該内側容器層との間の圧力が外気の圧力よりも所定値以上小さくなった場合にのみ外気の流入を許容する隙間である請求項1~3のいずれか一項に記載の容器蓋。 The outside air conduction gap is a gap that allows the inflow of outside air only when the pressure between the outer container layer and the inner container layer becomes smaller than a predetermined value by a predetermined value or more after the container is released from squeeze. The container lid according to any one of claims 1 to 3 . 前記厚肉部は、前記環状可撓性シール片のうち前記外側容器層の環状突出部と接触する側に形成されている請求項1~のいずれか一項に記載の容器蓋。 The container lid according to any one of claims 1 to 4 , wherein the thick portion is formed on the side of the annular flexible seal piece that comes into contact with the annular protrusion of the outer container layer. 前記厚肉部は、前記環状可撓性シール片の周方向に関して複数形成されている請求項1~のいずれか一項に記載の容器蓋。 The container lid according to any one of claims 1 to 5 , wherein the thick portion is formed in plurality with respect to the circumferential direction of the annular flexible seal piece. 複数の前記厚肉部は、前記周方向に関して互いに近接しないように形成されている請求項に記載の容器蓋。 The container lid according to claim 6 , wherein the plurality of thick portions are formed so as not to be close to each other in the circumferential direction. 複数の前記厚肉部は前記周方向に関してそれぞれ実質的に等しい幅を有し、前記環状可撓性シール片の中心を基準として互いに対向するように配置されている請求項6又は7に記載の容器蓋。 6 . Container lid. 請求項1~のいずれか一項に記載の容器蓋と、
外側容器層と内側容器層との間に外気を導入するための導入手段が形成されると共に前記容器蓋が嵌合される口頸部、前記口頸部を通過した内容物が充填される内側容器層、及び前記内側容器層の外側に積層されて当該内側容器層との間に外気を導入可能な外側容器層を含む容器と、
を有する容器蓋付き容器。
The container lid according to any one of claims 1 to 8 and the container lid.
An introduction means for introducing outside air is formed between the outer container layer and the inner container layer, and the mouth and neck to which the container lid is fitted, and the inside filled with the contents that have passed through the mouth and neck. A container layer and a container including an outer container layer laminated on the outer side of the inner container layer and capable of introducing outside air between the inner container layer and the inner container layer.
Container with lid.
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US20100075001A1 (en) 2007-02-20 2010-03-25 Conagra Foods Rdm, Inc. Food dispensing apparatus
JP2011099487A (en) 2009-11-05 2011-05-19 Nok Corp Bevel valve
JP2014069854A (en) 2012-09-28 2014-04-21 Yoshino Kogyosho Co Ltd Discharge container
JP2016088534A (en) 2014-10-31 2016-05-23 株式会社吉野工業所 Delamination container
JP2016193749A (en) 2015-03-31 2016-11-17 株式会社吉野工業所 Double container

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JP3741323B2 (en) * 1996-07-30 2006-02-01 株式会社吉野工業所 Liquid dispensing container

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Publication number Priority date Publication date Assignee Title
US20100075001A1 (en) 2007-02-20 2010-03-25 Conagra Foods Rdm, Inc. Food dispensing apparatus
JP2011099487A (en) 2009-11-05 2011-05-19 Nok Corp Bevel valve
JP2014069854A (en) 2012-09-28 2014-04-21 Yoshino Kogyosho Co Ltd Discharge container
JP2016088534A (en) 2014-10-31 2016-05-23 株式会社吉野工業所 Delamination container
JP2016193749A (en) 2015-03-31 2016-11-17 株式会社吉野工業所 Double container

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