JP7069832B2

JP7069832B2 - Container and container with lid using it

Info

Publication number: JP7069832B2
Application number: JP2018035531A
Authority: JP
Inventors: 広史岸田; 公介渡邊; 卓加戸
Original assignee: Dai Nippon Printing Co Ltd
Current assignee: Dai Nippon Printing Co Ltd
Priority date: 2018-02-28
Filing date: 2018-02-28
Publication date: 2022-05-18
Anticipated expiration: 2038-02-28
Also published as: JP2019151337A

Description

本発明は容器とそれを用いた蓋付容器に関するものであり、例えば、食品等の内容物を出し入れするための開口部が形成された容器と、その容器に開口部を覆うための蓋が設けられた蓋付容器と、に関するものである。 The present invention relates to a container and a container with a lid using the same. For example, a container having an opening for putting in and taking out contents such as food and a lid for covering the opening are provided in the container. It is related to a container with a lid.

いったん開封しても再封（リクローズ）が可能な蓋付容器として、従来より様々なタイプのものが提案されている。例えば、特許文献１に記載の蓋付容器は、樹脂成形体の容器と樹脂フィルムから成る蓋とを備えている。容器は、上面に開口部を有する収納部と、収納部の上縁から外側に突出するフランジ部と、を有しており、フランジ部には、外周端から径方向に突出した突起が設けられている。蓋の下面には環状の枠体が取り付けられており、枠体には蓋の下面に面した上壁から係合爪が設けられている。枠体は容器と一体に射出成形されており、係合爪の下端と突起とがフィルムを介して連結されている。蓋は枠体の上面及びフランジ部の上面に熱接着されており、開封すると蓋がフランジ部から剥がされて枠体と一体に開かれる。また、蓋を閉じると、係合爪が水平方向に弾性変形して容器の突起と上下方向に係合する。これにより、開封後の蓋付容器を再封することができる。 Various types of containers with lids that can be resealed (reclosed) even once opened have been proposed. For example, the container with a lid described in Patent Document 1 includes a container of a resin molded body and a lid made of a resin film. The container has a storage portion having an opening on the upper surface and a flange portion protruding outward from the upper edge of the storage portion, and the flange portion is provided with a protrusion protruding in the radial direction from the outer peripheral end. ing. An annular frame is attached to the lower surface of the lid, and the frame is provided with engaging claws from the upper wall facing the lower surface of the lid. The frame is injection-molded integrally with the container, and the lower end of the engaging claw and the protrusion are connected via a film. The lid is heat-bonded to the upper surface of the frame and the upper surface of the flange, and when opened, the lid is peeled off from the flange and opened integrally with the frame. When the lid is closed, the engaging claws are elastically deformed in the horizontal direction and engage with the protrusions of the container in the vertical direction. This makes it possible to reseal the container with a lid after opening.

特表２０１４－５０２５８４号公報Special Table 2014-502584 Gazette

しかしながら、特許文献１に記載の蓋付容器によると、係合爪が水平方向に弾性変形して突起と上下方向に係合するため、薄肉に形成されていると弾性力が弱すぎて突起に係合しにくくなる。この問題を解決するために係合爪の肉厚を大きくすると、蓋付容器のコストアップを招くことになる。 However, according to the container with a lid described in Patent Document 1, the engaging claw elastically deforms in the horizontal direction and engages with the protrusion in the vertical direction. Therefore, if the engaging claw is formed thin, the elastic force is too weak to form the protrusion. It becomes difficult to engage. Increasing the wall thickness of the engaging claws to solve this problem will lead to an increase in the cost of the container with a lid.

本発明はこのような状況に鑑みてなされたものであって、その目的は、安定した再封が可能で低コストな蓋付容器とそれに用いる容器を提供することにある。 The present invention has been made in view of such circumstances, and an object of the present invention is to provide a container with a lid which can be stably resealed and is low in cost and a container used for the same.

上記目的を達成するために、第１の発明の容器は、開口部が形成された容器であって、
前記開口部の周縁から外側に突出するように形成された環状の内フランジ部と、
前記内フランジ部の周囲から外側に突出するように形成された環状の外フランジ部と、
前記内フランジ部と前記外フランジ部とを、その間の周方向に沿って破断可能に連結するフランジ連結部と、を有し、
前記フランジ連結部での破断により前記外フランジ部が前記内フランジ部から分離されると、前記内フランジ部と前記外フランジ部のうちの少なくとも一方の破断部分に突起が生じて、前記内フランジ部と前記外フランジ部との係合が可能になることを特徴とする。 In order to achieve the above object, the container of the first invention is a container having an opening formed therein.
An annular inner flange portion formed so as to project outward from the peripheral edge of the opening,
An annular outer flange portion formed so as to project outward from the periphery of the inner flange portion,
It has a flange connecting portion that connects the inner flange portion and the outer flange portion so as to be breakable along the circumferential direction between them.
When the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion, a protrusion is generated at at least one of the inner flange portion and the outer flange portion, and the inner flange portion is formed. It is characterized in that it can be engaged with the outer flange portion.

第２の発明の容器は、上記第１の発明において、前記内フランジ部と前記外フランジ部との間に、前記フランジ連結部が複数形成されており、前記フランジ連結部同士の間にはスリットが周方向に沿って形成されていることを特徴とする。 In the container of the second invention, in the first invention, a plurality of the flange connecting portions are formed between the inner flange portion and the outer flange portion, and slits are formed between the flange connecting portions. Is characterized by being formed along the circumferential direction.

第３の発明の容器は、上記第２の発明において、前記外フランジ部の外周部分が、前記内フランジ部よりも上方に位置するとともに、弾性により前記内フランジ部と同じ高さに変位可能であり、
前記フランジ連結部での破断により前記外フランジ部が前記内フランジ部から分離されると、前記内フランジ部と前記外フランジ部が、前記スリットを介して対向する部分で互いに係合可能な一対の係合片を形成することを特徴とする。 In the second invention, the container of the third invention has the outer peripheral portion of the outer flange portion located above the inner flange portion and can be displaced to the same height as the inner flange portion by elasticity. can be,
When the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion, the inner flange portion and the outer flange portion can engage with each other at the portions facing each other via the slit. It is characterized by forming an engaging piece.

第４の発明の容器は、上記第２又は第３の発明において、前記内フランジ部と前記外フランジ部が、曲線形状の角部分とそれに隣接する２つの直線部分とを有する略矩形を成しており、その略矩形の１つの角部分には前記スリットが位置し、前記角部分と前記２つの直線部分との間にそれぞれ前記フランジ連結部が位置することを特徴とする。 In the second or third invention, the container of the fourth invention forms a substantially rectangular shape in which the inner flange portion and the outer flange portion have a curved corner portion and two straight portions adjacent thereto. The slit is located at one corner of the substantially rectangular shape, and the flange connecting portion is located between the corner and the two straight portions.

第５の発明の容器は、上記第４の発明において、少なくとも前記角部分に位置するスリットが、波線形状を有し、かつ、直線又は曲線に沿って位置することを特徴とする。 The container of the fifth aspect of the invention is characterized in that, in the fourth aspect of the invention, the slits located at least at the corners have a wavy line shape and are located along a straight line or a curved line.

第６の発明の容器は、上記第４の発明において、少なくとも前記角部分には直線形状又は曲線形状を有するスリットが複数位置し、前記角部分に位置するスリット同士の間には前記フランジ連結部が位置することを特徴とする。 In the fourth invention, the container of the sixth invention has a plurality of slits having a linear shape or a curved shape located at least in the corner portion, and the flange connecting portion between the slits located in the corner portion. Is characterized by being located.

第７の発明の容器は、上記第４～第６のいずれか１つの発明において、前記フランジ連結部での破断により前記外フランジ部を前記内フランジ部から分離する際のつまみとなる開封タブが、前記スリットの位置する角部分に設けられていることを特徴とする。 The container of the seventh invention has an opening tab that serves as a knob when the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion in any one of the fourth to sixth inventions. , It is characterized in that it is provided at the corner portion where the slit is located.

第８の発明の容器は、上記第４～第７のいずれか１つの発明において、前記スリットが位置する角部分の対角部分にも前記スリットが位置し、その対角部分とそれに隣接する２つの直線部分との間に前記フランジ連結部からなるヒンジ部がそれぞれ位置することを特徴とする。 In the container of the eighth invention, in any one of the fourth to seventh inventions, the slit is also located on the diagonal portion of the corner portion where the slit is located, and the diagonal portion and the diagonal portion adjacent thereto 2 It is characterized in that a hinge portion including the flange connecting portion is positioned between the two straight portions.

第９の発明の容器は、上記第１～第８のいずれか１つの発明において、前記内フランジ部と前記外フランジ部と前記フランジ連結部とが一体的に形成された樹脂成形体であることを特徴とする。 The container of the ninth invention is a resin molded body in which the inner flange portion, the outer flange portion, and the flange connecting portion are integrally formed in any one of the first to eighth inventions. It is characterized by.

第１０の発明の容器は、開口部が形成された容器であって、
前記開口部の周縁から外側に突出するように形成された環状の内フランジ部と、
前記内フランジ部の周囲から外側に突出するように形成された環状の外フランジ部と、
前記内フランジ部と前記外フランジ部とを、その間の周方向に沿って形成された複数のスリットで破断可能に連結する複数のフランジ連結部と、
を一体的に形成された樹脂成形体として有し、
前記内フランジ部と前記外フランジ部が、曲線形状の角部分を有する略矩形を成しており、その略矩形の１つの角部分には前記複数のスリットのうちの少なくとも１つが位置し、そのスリットの両端に位置するフランジ連結部が前記略矩形の対角線に関して対称に並び、
前記フランジ連結部での破断により前記外フランジ部を前記内フランジ部から分離する際のつまみとなる開封タブが、前記スリットの位置する角部分に設けられていることを特徴とする。 The container of the tenth invention is a container having an opening formed therein.
An annular inner flange portion formed so as to project outward from the peripheral edge of the opening,
An annular outer flange portion formed so as to project outward from the periphery of the inner flange portion,
A plurality of flange connecting portions that fractureably connect the inner flange portion and the outer flange portion with a plurality of slits formed along the circumferential direction between them.
As a resin molded body integrally formed with
The inner flange portion and the outer flange portion form a substantially rectangular shape having curved corner portions, and at least one of the plurality of slits is located in one corner portion of the substantially rectangular portion. The flange connecting portions located at both ends of the slit are arranged symmetrically with respect to the diagonal line of the substantially rectangular shape.
An opening tab that serves as a knob when the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion is provided at a corner portion where the slit is located.

第１１の発明の蓋付容器は、上記第１～第１０のいずれか１つの発明に係る容器と、前記開口部を覆うように前記内フランジ部及び前記外フランジ部に接着された蓋と、を備え、
前記フランジ連結部での破断により前記外フランジ部が前記内フランジ部から分離されると、前記蓋が前記外フランジ部と共に前記内フランジ部から分離されて、開封状態となることを特徴とする。 The container with a lid of the eleventh invention includes a container according to any one of the first to tenth inventions, a lid adhered to the inner flange portion and the outer flange portion so as to cover the opening. Equipped with
When the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion, the lid is separated from the inner flange portion together with the outer flange portion to be in an opened state.

本発明によれば、フランジ連結部での破断により内フランジ部と外フランジ部との効果的な係合が可能になるため、安定した再封が可能で低コストな蓋付容器とそれに用いる容器を実現することができる。 According to the present invention, since the breakage at the flange connecting portion enables effective engagement between the inner flange portion and the outer flange portion, a stable resealable and low-cost container with a lid and a container used for the container can be stably resealed. Can be realized.

第１～第４の実施の形態の蓋付容器の概略構成を示す組立斜視図。The assembly perspective view which shows the schematic structure of the container with a lid of 1st to 4th Embodiment. 第１～第４の実施の形態の蓋付容器の概略構成を示す分解斜視図。An exploded perspective view showing a schematic configuration of a container with a lid according to the first to fourth embodiments. 第１の実施の形態の容器を示す上面図。The top view which shows the container of 1st Embodiment. 第２の実施の形態の容器を示す上面図。The top view which shows the container of the 2nd Embodiment. 第３の実施の形態の容器を示す上面図。Top view showing the container of the third embodiment. 第４の実施の形態の容器を示す上面図。The top view which shows the container of 4th Embodiment. 図３～図６のＡ－Ａ’線断面図。AA'line cross-sectional view of FIGS. 3 to 6. 図７のＢ部を示す拡大断面図。FIG. 6 is an enlarged cross-sectional view showing a portion B in FIG. 7. 図７のＢ部における蓋接着状態、開封状態及び再封状態を示す拡大断面図。FIG. 6 is an enlarged cross-sectional view showing a lid-bonded state, an opened state, and a resealed state in the portion B of FIG. 7. 第１の実施の形態における開封タブ付近の開封前後状態の具体例を示す拡大平面図。The enlarged plan view which shows the specific example of the state before and after opening near the opening tab in 1st Embodiment. 第２の実施の形態における開封タブ付近の開封前後状態の具体例を示す拡大平面図。The enlarged plan view which shows the specific example of the state before and after opening near the opening tab in 2nd Embodiment. 第３の実施の形態における開封タブ付近の開封前後状態の具体例を示す拡大平面図。The enlarged plan view which shows the specific example of the state before and after opening near the opening tab in 3rd Embodiment. 第４の実施の形態における開封タブ付近の開封前後状態の具体例を示す拡大平面図。The enlarged plan view which shows the specific example of the state before and after opening near the opening tab in 4th Embodiment. 第１～第４の実施の形態における開封タブ付近の蓋接着状態、開封状態及び再封状態の具体例を示す拡大断面図。The enlarged sectional view which shows the specific example of the lid adhesive state, the opened state and the resealed state in the vicinity of the opening tab in 1st to 4th Embodiment.

以下、本発明の実施の形態に係る容器、それを用いた蓋付容器等を、図面を参照しつつ説明する。なお、各実施の形態等の相互で同一の部分や相当する部分には同一の符号を付して重複説明を適宜省略する。 Hereinafter, the container according to the embodiment of the present invention, the container with a lid using the container, and the like will be described with reference to the drawings. It should be noted that the same parts and corresponding parts of each of the embodiments and the like are designated by the same reference numerals, and duplicate description will be omitted as appropriate.

図１の組立斜視図と図２の分解斜視図に、第１～第４の実施の形態に係る蓋付容器１０の概略構成を示す。この蓋付容器１０は、図２に示すように、内容物を出し入れするための開口部１７が形成された容器１５と、その開口部１７を覆うための蓋２０と、を備えている。容器１５は、内容物が収納される収納部１６と、開口部１７の周縁から外側に突出するように形成された環状の内フランジ部３０と、内フランジ部３０の周囲から外側に突出するように形成された環状の外フランジ部４０と、を有している。なお、収納部１６に入れる内容物は特に限定されるものではないが、例えば、惣菜，菓子，ナッツ，ドライフルーツ，味噌等の固形状・半固形状の食品類等が挙げられる。 The assembled perspective view of FIG. 1 and the exploded perspective view of FIG. 2 show a schematic configuration of the container with a lid 10 according to the first to fourth embodiments. As shown in FIG. 2, the container with a lid 10 includes a container 15 in which an opening 17 for taking in and out the contents is formed, and a lid 20 for covering the opening 17. The container 15 has a storage portion 16 in which the contents are stored, an annular inner flange portion 30 formed so as to project outward from the peripheral edge of the opening 17, and an annular inner flange portion 30 so as to project outward from the periphery of the inner flange portion 30. It has an annular outer flange portion 40 formed in the above. The contents to be put in the storage unit 16 are not particularly limited, and examples thereof include solid and semi-solid foods such as prepared foods, confectionery, nuts, dried fruits, and miso.

容器１５は、ポリプロピレン（ＰＰ）等の熱可塑性樹脂からなる樹脂成形体であり、射出成形，真空成形等の成形方法によって薄肉に形成されている。蓋２０は樹脂フィルムからなっており、片面に熱接着層を有している。その熱接着層によって、内フランジ部３０と外フランジ部４０の各上面全体にわたって蓋２０が熱接着される。したがって、内フランジ部３０及び外フランジ部４０に蓋２０を熱接着することにより、内容物の入った収納部１６を密封することができる。なお、蓋２０は樹脂フィルムに限らず、紙，金属箔等から成る各層を組み合せた多層基材でもよく、熱接着層の代わりに接着剤を用いてもよい。また、ガスバリア性を必要とする場合には、アルミニウム箔層や蒸着フィルム層を蓋２０の中間層として備えてもよい。 The container 15 is a resin molded body made of a thermoplastic resin such as polypropylene (PP), and is formed thin by a molding method such as injection molding or vacuum forming. The lid 20 is made of a resin film and has a heat-bonding layer on one side. The heat-bonding layer heat-bonds the lid 20 over the entire upper surfaces of the inner flange portion 30 and the outer flange portion 40. Therefore, by thermally adhering the lid 20 to the inner flange portion 30 and the outer flange portion 40, the storage portion 16 containing the contents can be sealed. The lid 20 is not limited to the resin film, but may be a multilayer base material in which each layer made of paper, metal foil, or the like is combined, and an adhesive may be used instead of the heat adhesive layer. Further, when gas barrier properties are required, an aluminum foil layer or a vapor-deposited film layer may be provided as an intermediate layer of the lid 20.

開口部１７，内フランジ部３０及び外フランジ部４０は、曲線形状の角部分とそれに隣接する２つの直線部分とを有する略矩形を成しており（ここでは略正方形を想定している。）、それらは互いに略相似の関係になっている。その１つの角部分には、開封の際のつまみとなる開封タブ４１が外フランジ部４０の縁から外側に突出するように形成されている。開封タブ４１にも蓋２０が熱接着されるので、蓋２０と共に開封タブ４１を持って外フランジ部４０を内フランジ部３０から分離すると、蓋付容器１０は後述する開封状態となる。 The opening 17, the inner flange 30, and the outer flange 40 form a substantially rectangular shape having a curved corner portion and two straight portions adjacent thereto (here, a substantially square is assumed). , They are in a similar relationship to each other. An opening tab 41, which is a knob for opening, is formed at one corner portion so as to project outward from the edge of the outer flange portion 40. Since the lid 20 is also heat-bonded to the opening tab 41, when the outer flange portion 40 is separated from the inner flange portion 30 by holding the opening tab 41 together with the lid 20, the container with lid 10 is in the opened state described later.

図３～図６の上面図に、第１～第４の実施の形態に係る容器１５Ａ～１５Ｄを示す。また、図３～図６のＡ－Ａ’線断面図を図７に示し、図７のＢ部を拡大して図８に示す。図３～図８に示す容器１５Ａ～１５Ｄは、図１及び図２に示す容器１５を詳細に示したものである。つまり、前述した容器１５は、容器１５Ａ～１５Ｄに共通する構成の概略を示したものである。 Top views of FIGS. 3 to 6 show containers 15A to 15D according to the first to fourth embodiments. Further, the cross-sectional views taken along the line AA'of FIGS. 3 to 6 are shown in FIG. 7, and the portion B in FIG. 7 is enlarged and shown in FIG. The containers 15A to 15D shown in FIGS. 3 to 8 are detailed representations of the containers 15 shown in FIGS. 1 and 2. That is, the above-mentioned container 15 shows an outline of the configuration common to the containers 15A to 15D.

容器１５Ａ～１５Ｄの収納部１６は、図３～図６に示すように、開口部１７と略相似の略矩形に形成された底壁１８を有している。その底壁１８の中央には、図７に示すように上方（開口部１７側）に突出する略矩形の突出部１９が、収納部１６の強度を向上させるために形成されている。 As shown in FIGS. 3 to 6, the storage portions 16 of the containers 15A to 15D have a bottom wall 18 formed in a substantially rectangular shape similar to the opening portion 17. As shown in FIG. 7, a substantially rectangular protrusion 19 projecting upward (on the opening 17 side) is formed in the center of the bottom wall 18 in order to improve the strength of the storage portion 16.

容器１５Ａ～１５Ｄには、図３～図６に示すように、内フランジ部３０と外フランジ部４０との間に、複数のスリット６０Ａ～６０Ｄ，６１～６３と、複数のフランジ連結部５０～５２と、が形成されている。つまり、容器１５Ａ～１５Ｄは、内フランジ部３０と外フランジ部４０とフランジ連結部５０～５２と、を一体的に形成された樹脂成形体として有している。 As shown in FIGS. 3 to 6, the containers 15A to 15D have a plurality of slits 60A to 60D, 61 to 63 and a plurality of flange connecting portions 50 to 50 between the inner flange portion 30 and the outer flange portion 40. 52 and are formed. That is, the containers 15A to 15D have the inner flange portion 30, the outer flange portion 40, and the flange connecting portions 50 to 52 as a resin molded body integrally formed.

フランジ連結部５０，５１同士の間には、複数のスリット６０Ａ～６０Ｄ，６１が周方向に沿って形成されている。これにより、フランジ連結部５０，５１は、内フランジ部３０と外フランジ部４０とを、その間の周方向に沿って破断可能に連結する状態となっている。また、フランジ連結部５２は、スリット６２とスリット６３での切り込みとにより、後述するヒンジ部を構成している。 A plurality of slits 60A to 60D, 61 are formed along the circumferential direction between the flange connecting portions 50 and 51. As a result, the flange connecting portions 50 and 51 are in a state of connecting the inner flange portion 30 and the outer flange portion 40 so as to be breakable along the circumferential direction between them. Further, the flange connecting portion 52 constitutes a hinge portion described later by the slit 62 and the notch in the slit 63.

容器１５Ａ，１５Ｂではフランジ連結部５０がそれぞれ２つ設けられており、容器１５Ｃ，１５Ｄではフランジ連結部５０がそれぞれ４つ設けられている。容器１５Ａ～１５Ｄでは、フランジ連結部５１が４つ設けられている。容器１５Ａにはスリット６０Ａが１つ設けられており、容器１５Ｂにはスリット６０Ｂが１つ設けられている。容器１５Ｃにはスリット６０Ｃが３つ設けられており、容器１５Ｄにはスリット６０Ｄが３つ設けられている。容器１５Ａ～１５Ｄでは、スリット６１がそれぞれ６つ設けられており、スリット６２はそれぞれ１つ設けられている。また、容器１５Ａ～１５Ｄでは、ヒンジ部を構成するフランジ連結部５２がそれぞれ２つ設けられており、それを構成するスリット６３がそれぞれ４つ設けられている。容器１５Ａ～１５Ｄのいずれにおいても、スリット６０Ａ～６０Ｄ，６１～６３及びフランジ連結部５０～５２は、略矩形の内フランジ部３０及び外フランジ部４０において、開封タブ４１を通る対角線ＤＬに関して対称に配置されている。 The containers 15A and 15B are provided with two flange connecting portions 50, respectively, and the containers 15C and 15D are provided with four flange connecting portions 50, respectively. The containers 15A to 15D are provided with four flange connecting portions 51. The container 15A is provided with one slit 60A, and the container 15B is provided with one slit 60B. The container 15C is provided with three slits 60C, and the container 15D is provided with three slits 60D. In the containers 15A to 15D, six slits 61 are provided, and one slit 62 is provided. Further, in the containers 15A to 15D, two flange connecting portions 52 constituting the hinge portions are provided, and four slits 63 constituting the flange connecting portions 52 are provided. In any of the containers 15A to 15D, the slits 60A to 60D, 61 to 63 and the flange connecting portions 50 to 52 are symmetrical with respect to the diagonal DL passing through the opening tab 41 in the substantially rectangular inner flange portion 30 and the outer flange portion 40. Have been placed.

フランジ連結部５０～５２は、スリット６０Ａ～６０Ｄ，６１，６２の両端に設けられている。例えば、スリット６０Ａ～６０Ｄは内フランジ部３０と外フランジ部４０が成す略矩形の角部分の１つに位置しており、その角部分とそれに隣接する２つの直線部分との間にそれぞれフランジ連結部５０が位置している。容器１５Ｃ，１５Ｄにおいて、略矩形の角部分の１つに位置するスリット６０Ｃ，６０Ｄでは、スリット６０Ｃ，６０Ｄ同士の間にもフランジ連結部５０が位置している。つまり、スリット６０Ａ～６０Ｄの両端にはフランジ連結部５０が位置している。一方、スリット６２はスリット６０Ａ～６０Ｄの対角部分に位置しており、その対角部分とそれに隣接する２つの直線部分との間に、それぞれヒンジ部を構成するフランジ連結部５２が位置している。 The flange connecting portions 50 to 52 are provided at both ends of the slits 60A to 60D, 61 and 62. For example, the slits 60A to 60D are located at one of the corners of a substantially rectangular shape formed by the inner flange portion 30 and the outer flange portion 40, and the flanges are connected between the corner portion and the two straight portions adjacent thereto. The part 50 is located. In the slits 60C and 60D located at one of the corner portions of the substantially rectangular shape in the containers 15C and 15D, the flange connecting portion 50 is also located between the slits 60C and 60D. That is, the flange connecting portions 50 are located at both ends of the slits 60A to 60D. On the other hand, the slit 62 is located in the diagonal portion of the slits 60A to 60D, and the flange connecting portion 52 constituting the hinge portion is located between the diagonal portion and the two linear portions adjacent thereto. There is.

図８に示すように、内フランジ部３０の外周部分と外フランジ部４０の内周部分とで、凹部３５が形成されている。その凹部３５内には、図３～図６に示すように、スリット６０Ａ～６０Ｄ，６１～６３とフランジ連結部５０～５２が配置されている。内フランジ部３０には、蓋２０の熱接着や内フランジ部３０の補強のために、凹部３５の内周に沿って突出部３１が形成されている。突出部３１は上方に凸の形状を有しており（図８）、開口部１７と相似の矩形を成している（図３～図６）。突出部３１の外周には連続して凹部３５が形成されており、凹部３５の外周には連続して外フランジ部４０の外周部分が形成されている。 As shown in FIG. 8, a recess 35 is formed between the outer peripheral portion of the inner flange portion 30 and the inner peripheral portion of the outer flange portion 40. As shown in FIGS. 3 to 6, slits 60A to 60D, 61 to 63 and flange connecting portions 50 to 52 are arranged in the recess 35. The inner flange portion 30 is formed with a protruding portion 31 along the inner circumference of the recess 35 for thermal adhesion of the lid 20 and reinforcement of the inner flange portion 30. The protrusion 31 has an upwardly convex shape (FIG. 8) and forms a rectangle similar to the opening 17 (FIGS. 3 to 6). A recess 35 is continuously formed on the outer periphery of the protrusion 31, and an outer peripheral portion of the outer flange portion 40 is continuously formed on the outer periphery of the recess 35.

外フランジ部４０は、図８に示すように、外周部分が上方に位置するように傾斜しており、凹部３５の幅Ｗが深さＤよりも大きくなっている（Ｗ＞Ｄ）。深さＤが小さいため、容器１５の成形加工時に凹部３５を容易に形成することができる。また、凹部３５の外周側の側壁４２の傾斜角度βは、外フランジ部４０の外周部分の傾斜角度γよりも大きくなっている。これにより、外フランジ部４０は適度の弾性で内フランジ部３０と同じ高さに変位可能となる。 As shown in FIG. 8, the outer flange portion 40 is inclined so that the outer peripheral portion is located upward, and the width W of the recess 35 is larger than the depth D (W> D). Since the depth D is small, the recess 35 can be easily formed during the molding process of the container 15. Further, the inclination angle β of the side wall 42 on the outer peripheral side of the concave portion 35 is larger than the inclination angle γ of the outer peripheral portion of the outer flange portion 40. As a result, the outer flange portion 40 can be displaced to the same height as the inner flange portion 30 with appropriate elasticity.

ここで、各容器１５Ａ～１５Ｄに特徴的なフランジ連結部５０及びスリット６０Ａ～６０Ｄを説明する。前述したように、内フランジ部３０と外フランジ部４０は、曲線形状の角部分とそれに隣接する２つの直線部分とを有する略矩形を成している。その略矩形において、曲線形状の角部分の１つには開封タブ４１が配置されており、その角部分にスリット６０Ａ～６０Ｄが位置している。そして、少なくともその角部分と上記２つの直線部分との間には、それぞれフランジ連結部５０が位置している。 Here, the flange connecting portion 50 and the slits 60A to 60D, which are characteristic of each of the containers 15A to 15D, will be described. As described above, the inner flange portion 30 and the outer flange portion 40 form a substantially rectangular shape having a curved corner portion and two straight portions adjacent thereto. In the substantially rectangular shape, the opening tab 41 is arranged at one of the corner portions of the curved shape, and the slits 60A to 60D are located at the corner portions. A flange connecting portion 50 is located at least between the corner portion and the two straight portions.

容器１５Ａでは（図３）、開封タブ４１が配置されている角部分に位置するスリット６０Ａが、波線形状を有し、かつ、直線（開封タブ４１を通る対角線ＤＬに対して垂直な直線）に沿って位置している。そのスリット６０Ａの両側（つまり、スリット６１との間）には、フランジ連結部５０が位置している。容器１５Ｂでは（図４）、開封タブ４１が配置されている角部分に位置するスリット６０Ｂが、波線形状を有し、かつ、曲線に沿って位置している。そのスリット６０Ｂの両側（つまり、スリット６１との間）には、フランジ連結部５０が位置している。 In the container 15A (FIG. 3), the slit 60A located at the corner where the opening tab 41 is arranged has a wavy line shape and is straight (a straight line perpendicular to the diagonal line DL passing through the opening tab 41). It is located along. Flange connecting portions 50 are located on both sides of the slit 60A (that is, between the slit 60A and the slit 61). In the container 15B (FIG. 4), the slit 60B located at the corner where the opening tab 41 is arranged has a wavy line shape and is located along a curved line. Flange connecting portions 50 are located on both sides of the slit 60B (that is, between the slit 60B).

容器１５Ｃでは（図５）、開封タブ４１が配置されている角部分に、直線形状（開封タブ４１を通る対角線ＤＬに対して垂直な直線形状）を有するスリット６０Ｃが３つ位置しており、その３つのスリット６０Ａの両側（つまり、スリット６１との間）と、スリット６０Ｃ同士の間とに、フランジ連結部５０が位置している。容器１５Ｄでは（図６）、開封タブ４１が配置されている角部分に、曲線形状を有するスリット６０Ｄが３つ位置しており、その３つのスリット６０Ｄの両側（つまり、スリット６１との間）と、スリット６０Ｄ同士の間とに、フランジ連結部５０が位置している。 In the container 15C (FIG. 5), three slits 60C having a linear shape (a linear shape perpendicular to the diagonal line DL passing through the opening tab 41) are located at the corners where the opening tab 41 is arranged. The flange connecting portion 50 is located on both sides of the three slits 60A (that is, between the slits 61) and between the slits 60C. In the container 15D (FIG. 6), three slits 60D having a curved shape are located at the corners where the opening tabs 41 are arranged, and both sides (that is, between the slits 61) of the three slits 60D are located. The flange connecting portion 50 is located between the slits 60D and the slits 60D.

スリット６０Ａ～６０Ｄは、容器１５Ａ～１５Ｄを構成する樹脂シートに対し、単数又は複数のウェーブ刃又はストレート刃で切り込みを入れることにより、波線形状又は直線形状に形成される。そして、スリット６０Ａ～６０Ｄの両側に位置するフランジ連結部５０は、樹脂シートに切り込みを入れる際の刃止めにより形成される。なお、スリット６１～６３についても各形状に応じた刃で切り込みを入れることにより形成され、その際の刃止めによりフランジ連結部５１，５２が形成される。 The slits 60A to 60D are formed into a wavy line shape or a straight line shape by making cuts in the resin sheets constituting the containers 15A to 15D with a single or a plurality of wave blades or straight blades. The flange connecting portions 50 located on both sides of the slits 60A to 60D are formed by a blade stopper when making a cut in the resin sheet. The slits 61 to 63 are also formed by making a notch with a blade corresponding to each shape, and the flange connecting portions 51 and 52 are formed by the blade stopper at that time.

スリット６０Ａ～６０Ｄが位置する角部分の外フランジ部４０には、前述したように開封の際のつまみとなる開封タブ４１が形成されている。フランジ連結部５０，５１は、手での切り離しによる破断が可能な周方向長さに形成されている。一方、開封タブ４１の対角付近に位置するフランジ連結部５２は、フランジ連結部５０，５１よりも周方向長さ（スリット６３同士の間隔）が大きいため、手での切り離しによる破断は困難になっている。したがって、開封タブ４１を持ってフランジ連結部５０，５１を破断した際に、内フランジ部３０からの外フランジ部４０の分離をフランジ連結部５２で容易に止めることができる。 As described above, an opening tab 41 that serves as a knob for opening is formed on the outer flange portion 40 at the corner portion where the slits 60A to 60D are located. The flange connecting portions 50 and 51 are formed to have a circumferential length that can be broken by manual separation. On the other hand, the flange connecting portion 52 located near the diagonal of the opening tab 41 has a larger circumferential length (distance between the slits 63) than the flange connecting portions 50 and 51, so that it is difficult to break the flange by hand. It has become. Therefore, when the flange connecting portions 50 and 51 are broken by holding the opening tab 41, the separation of the outer flange portion 40 from the inner flange portion 30 can be easily stopped by the flange connecting portion 52.

そして、蓋２０及び外フランジ部４０は、フランジ連結部５２をヒンジ部とする回動により開閉可能となり、内フランジ部３０がスリット６２の部分で外フランジ部４０を係止することにより開封状態の保持が可能となる。このとき、フランジ連結部５２は捻られても容易に塑性変形するため、開封状態は安定的に保持される。これにより、高い利便性を得ることができる。 The lid 20 and the outer flange portion 40 can be opened and closed by rotating the flange connecting portion 52 as a hinge portion, and the inner flange portion 30 locks the outer flange portion 40 at the slit 62 to open the lid 20 and the outer flange portion 40. It can be held. At this time, since the flange connecting portion 52 is easily plastically deformed even if it is twisted, the opened state is stably maintained. This makes it possible to obtain high convenience.

フランジ連結部５２を形成するスリット６３は、スリット６１，６２の一端から内側に屈曲して、開封タブ４１を通る対角線ＤＬに対して略垂直に延びている。つまり、対向する２つのスリット６３は互いに略平行に配され、スリット６３がスリット６２に交差する角度αが鋭角に形成されている。４つのスリット６３が互いに平行に近づくように角度αを鋭角に形成することにより、フランジ連結部５２をより容易に捻ることが可能となる。 The slit 63 forming the flange connecting portion 52 bends inward from one end of the slits 61 and 62 and extends substantially perpendicular to the diagonal DL passing through the opening tab 41. That is, the two slits 63 facing each other are arranged substantially parallel to each other, and the angle α at which the slit 63 intersects the slit 62 is formed at an acute angle. By forming the angle α at an acute angle so that the four slits 63 approach each other in parallel, the flange connecting portion 52 can be twisted more easily.

２つのフランジ連結部５２の間には、４つのリブ３２が設けられている。リブ３２は、内フランジ部３０の上面側（蓋２０側）に開口するとともに、その裏面側に突出している。また、リブ３２の平面形状は、長手方向を容器１５の略中心に向かう方向（対角線ＤＬに対して平行方向）に配した長円に形成されている。このような形状のリブ３２を設けることにより、外フランジ部４０及び凹部３５が上下方向に弾性変形し難くなる。このため、開封時に凹部３５の弾性によるフランジ連結部５２の降下を防止して、フランジ連結部５２をヒンジ部として確実に捻ることができる。 Four ribs 32 are provided between the two flange connecting portions 52. The rib 32 opens on the upper surface side (cover 20 side) of the inner flange portion 30 and protrudes on the back surface side thereof. Further, the planar shape of the rib 32 is formed as an ellipse having the longitudinal direction arranged in the direction toward the substantially center of the container 15 (parallel to the diagonal DL). By providing the rib 32 having such a shape, the outer flange portion 40 and the recess 35 are less likely to be elastically deformed in the vertical direction. Therefore, it is possible to prevent the flange connecting portion 52 from descending due to the elasticity of the recess 35 at the time of opening, and to reliably twist the flange connecting portion 52 as the hinge portion.

図９に、図７のＢ部における蓋接着状態（密封状態）、開封状態及び再封状態を拡大して示す。図９において、（Ａ）は容器１５Ａ～１５Ｄに蓋２０が熱接着された状態の蓋付容器１０を示しており、（Ｂ）は開封状態の蓋付容器１０を示しており、（Ｃ）は再封状態の蓋付容器１０を示している。 FIG. 9 shows an enlarged view of the lid adhesive state (sealed state), opened state, and resealed state in the portion B of FIG. 7. In FIG. 9, (A) shows a container with a lid 20 in a state where the lid 20 is heat-bonded to the containers 15A to 15D, and (B) shows a container 10 with a lid in an opened state, (C). Indicates a container with a lid 10 in a resealed state.

容器１５Ａ～１５Ｄは薄肉に形成されているため、外フランジ部４０の外周部分は、内フランジ部３０よりも上方に位置するとともに（図８）、弾性により内フランジ部３０と同じ高さに変位可能である（図９（Ａ））。開口部１７を覆うように蓋２０を容器１５上に配し、外フランジ部４０と内フランジ部３０とが同じ高さになるように蓋２０を押圧しながら加熱すると、蓋２０の熱接着層が溶融し、図９（Ａ）に示すように、接着部３４，４４で蓋２０が内フランジ部３０の突出部３１及び外フランジ部４０の外周部分に熱接着される。これにより、内容物の入った収納部１６は密封状態となり、また、蓋２０は外フランジ部４０で上方に付勢された状態に保持される。なお、熱接着層は蓋２０の下面全面に設けられているが、図９では熱接着部分である接着部３４，４４のみを示している。 Since the containers 15A to 15D are formed to be thin, the outer peripheral portion of the outer flange portion 40 is located above the inner flange portion 30 (FIG. 8) and is displaced to the same height as the inner flange portion 30 due to elasticity. It is possible (Fig. 9 (A)). When the lid 20 is arranged on the container 15 so as to cover the opening 17 and the lid 20 is pressed and heated so that the outer flange portion 40 and the inner flange portion 30 are at the same height, the heat adhesive layer of the lid 20 is heated. Is melted, and as shown in FIG. 9A, the lid 20 is heat-bonded to the protruding portion 31 of the inner flange portion 30 and the outer peripheral portion of the outer flange portion 40 at the bonding portions 34 and 44. As a result, the storage portion 16 containing the contents is sealed, and the lid 20 is held in a state of being urged upward by the outer flange portion 40. Although the heat-adhesive layer is provided on the entire lower surface of the lid 20, only the adhesive portions 34 and 44, which are the heat-adhesive portions, are shown in FIG.

蓋付容器１０（図１，図９（Ａ））の開封タブ４１（図１～図６）をつまんで引っ張ると、スリット６０Ａ～６０Ｄ，６１（図３～図６）間のフランジ連結部５０，５１が破断されるとともに、接着部３４（図９（Ａ））が剥離されて、蓋付容器１０は開封状態となる（図９（Ｂ））。つまり、外フランジ部４０が蓋２０と一体に開かれて、フランジ連結部５２をヒンジ部とする回動の可能な開封状態が保持される。これにより、収納部１６内の内容物の取り出しが可能となる。なお、開封タブ４１を通る対角線ＤＬ方向を開封方向とするのが好ましく、開封タブ４１を通る対角線ＤＬに沿って開封タブ４１を引っ張るようにすれば、安定した開封を行うことが可能である。 When the opening tab 41 (FIGS. 1 to 6) of the container with a lid 10 (FIGS. 1 and 9 (A)) is pinched and pulled, the flange connecting portion 50 between the slits 60A to 60D and 61 (FIGS. 3 to 6) is connected. , 51 is broken, and the adhesive portion 34 (FIG. 9 (A)) is peeled off, so that the container with lid 10 is in an opened state (FIG. 9 (B)). That is, the outer flange portion 40 is opened integrally with the lid 20, and the rotatable opened state with the flange connecting portion 52 as the hinge portion is maintained. This makes it possible to take out the contents in the storage unit 16. It is preferable that the diagonal DL direction passing through the opening tab 41 is the opening direction, and stable opening can be performed by pulling the opening tab 41 along the diagonal DL passing through the opening tab 41.

また、フランジ連結部５０，５１（図３～図６）での破断により外フランジ部４０が内フランジ部３０から分離されると、図９（Ｂ）に示すように係合片３３，４３が形成される。図９（Ｂ）ではスリット６１でのＡ－Ａ’線断面（図３～図６）を示しているが、後述するようにスリット６０Ａ～６０Ｄでも同様の断面を有する係合片３３，４３が形成される（図１０～図１３）。つまり、内フランジ部３０と外フランジ部４０は、スリット６０Ａ～６０Ｄ，６１を介して対向する部分で互いに係合可能な一対の係合片３３，４３を形成する（図９（Ｂ））。このとき、外フランジ部４０の付勢力が解かれて、係合片４３の先端が内周側に変位する。係合片４３は外フランジ部４０の内周端を中心に回動するが、凹部３５の深さＤ（図８）が小さいため、係合片４３の水平方向の変位量も小さなものとなる。 Further, when the outer flange portion 40 is separated from the inner flange portion 30 due to the breakage at the flange connecting portions 50 and 51 (FIGS. 3 to 6), the engaging pieces 33 and 43 are separated as shown in FIG. 9 (B). It is formed. 9 (B) shows the AA'line cross section (FIGS. 3 to 6) in the slit 61, but as will be described later, the engaging pieces 33 and 43 having the same cross section also in the slits 60A to 60D. It is formed (FIGS. 10 to 13). That is, the inner flange portion 30 and the outer flange portion 40 form a pair of engaging pieces 33, 43 that can be engaged with each other at the portions facing each other via the slits 60A to 60D, 61 (FIG. 9B). At this time, the urging force of the outer flange portion 40 is released, and the tip of the engaging piece 43 is displaced toward the inner peripheral side. The engaging piece 43 rotates about the inner peripheral end of the outer flange portion 40, but since the depth D (FIG. 8) of the recess 35 is small, the amount of displacement of the engaging piece 43 in the horizontal direction is also small. ..

開封タブ４１をつまんで外フランジ部４０及び蓋２０を再度閉じると、図９（Ｃ）に示すように、係合片４３が上下方向に弾性変形して係合片３３を乗り越え、係合片３３に対して上下方向に係合する。これにより、蓋２０及び外フランジ部４０が内フランジ部３０に保持されるため、蓋付容器１０の再封が達成される。容器１５Ａ～１５Ｄが薄肉に形成されていても、再封時に内フランジ部３０と外フランジ部４０とを係合させることができるため、低コストでの再封を実現することができる。また、係合片４３は係合片３３に緩く係止されているが、密封する必要のない内容物（軽量物，固形物，半固形物等）であればこのような緩い係止でも問題のない再封が可能である。 When the opening tab 41 is pinched and the outer flange portion 40 and the lid 20 are closed again, as shown in FIG. 9C, the engaging piece 43 elastically deforms in the vertical direction to get over the engaging piece 33 and get over the engaging piece 33. It engages with 33 in the vertical direction. As a result, the lid 20 and the outer flange portion 40 are held by the inner flange portion 30, so that the resealing of the container with the lid 10 is achieved. Even if the containers 15A to 15D are formed to be thin, the inner flange portion 30 and the outer flange portion 40 can be engaged with each other at the time of resealing, so that resealing can be realized at low cost. Further, although the engaging piece 43 is loosely locked to the engaging piece 33, such loose locking is problematic if the contents do not need to be sealed (lightweight, solid, semi-solid, etc.). Can be resealed without.

容器１５Ａ，１５Ｂ（図３，図４）では、スリット６０Ａ，６０Ｂが波線形状を有しているため、フランジ連結部５０での破断により形成される係合片３３，４３も波線形状を有することになる。再封時には、内フランジ部３０と外フランジ部４０との横方向の相対位置に微少なズレが生じるため、係合片３３，４３の波形の山部が上下方向に重なって係合することになる。したがって、係合片３３，４３のより確実で安定した再封が可能となる。 In the containers 15A and 15B (FIGS. 3 and 4), since the slits 60A and 60B have a wavy line shape, the engaging pieces 33 and 43 formed by the break at the flange connecting portion 50 also have a wavy line shape. become. At the time of resealing, a slight deviation occurs in the lateral relative position between the inner flange portion 30 and the outer flange portion 40, so that the corrugated peaks of the engaging pieces 33 and 43 overlap in the vertical direction and engage with each other. Become. Therefore, more reliable and stable resealing of the engaging pieces 33 and 43 is possible.

再封後の開封を行う際には、開封時と同様、開封タブ４１をつまんで引っ張ればよい。開封タブ４１を通る対角線ＤＬに関して係合片３３，４３は対称に位置することになるため、対角線ＤＬに沿って開封タブ４１を引っ張るようにすれば、再封後の開封をより安定的に行うことが可能である。前述したように係合片４３の水平方向の変位量が小さいため、係合片４３と係合片３３との係合幅は小さくなる。したがって、再封後の開封を容易に行うことが可能となる。また、凹部３５が浅いため（Ｗ＞Ｄ）、再封時に係合片４３と係合片３３との係合幅を小さくすることができる。したがって、上記と同様、再封後の開封を容易に行うことが可能となる。 When opening after resealing, the opening tab 41 may be pinched and pulled as in the case of opening. Since the engaging pieces 33 and 43 are positioned symmetrically with respect to the diagonal line DL passing through the opening tab 41, if the opening tab 41 is pulled along the diagonal line DL, the opening after resealing can be performed more stably. It is possible. As described above, since the amount of displacement of the engaging piece 43 in the horizontal direction is small, the engaging width between the engaging piece 43 and the engaging piece 33 is small. Therefore, it is possible to easily open the package after resealing. Further, since the recess 35 is shallow (W> D), the engagement width between the engagement piece 43 and the engagement piece 33 can be reduced at the time of resealing. Therefore, as described above, it is possible to easily open the package after resealing.

図１０～図１３に、第１～第４の実施の形態における開封タブ４１付近の開封前後状態の具体例を拡大して示す。図１０～図１３において、（Ａ）は容器１５Ａ～１５Ｄに蓋２０が熱接着された状態（密封状態）の内フランジ部３０と外フランジ部４０を示しており、（Ｂ）～（Ｄ）は開封状態の内フランジ部３０と外フランジ部４０を示している。（Ａ）に示す開封タブ４１を引っ張ってフランジ連結部５０を破断すると、（Ｂ）～（Ｄ）に示すように、内フランジ部３０と外フランジ部４０のうちの少なくとも一方の破断部分に突起５３，５４が生じる。このとき、前述したように、スリット６０Ａ～６０Ｄを介して対向する部分で、互いに係合可能な一対の係合片３３，４３も形成される。 10 to 13 show an enlarged specific example of the state before and after opening the vicinity of the opening tab 41 in the first to fourth embodiments. 10 to 13, (A) shows the inner flange portion 30 and the outer flange portion 40 in a state where the lid 20 is heat-bonded (sealed state) to the containers 15A to 15D, and (B) to (D). Shows the inner flange portion 30 and the outer flange portion 40 in the opened state. When the opening tab 41 shown in (A) is pulled to break the flange connecting portion 50, protrusions are formed on at least one of the inner flange portion 30 and the outer flange portion 40 as shown in (B) to (D). 53, 54 occur. At this time, as described above, a pair of engaging pieces 33 and 43 that can be engaged with each other are also formed at the portions facing each other via the slits 60A to 60D.

フランジ連結部５０を破断した場合、その破断部分の状態は（Ｂ）～（Ｄ）に示す３つのタイプに分けられる。図１０～図１３において、（Ｂ）の場合、内フランジ部３０の破断部分には突起５３、外フランジ部４０の破断部分には突起５４がそれぞれ発生し、（Ｃ）の場合、内フランジ部３０の破断部分には突起５３、外フランジ部４０の破断部分には切り欠き５６がそれぞれ発生し、（Ｄ）の場合、内フランジ部３０の破断部分には切り欠き５５、外フランジ部４０の破断部分には突起５４がそれぞれ発生する。 When the flange connecting portion 50 is broken, the state of the broken portion can be classified into the three types shown in (B) to (D). In FIGS. 10 to 13, in the case of (B), a protrusion 53 is generated in the broken portion of the inner flange portion 30, a protrusion 54 is generated in the broken portion of the outer flange portion 40, and in the case of (C), the inner flange portion is formed. A protrusion 53 is generated at the broken portion of 30 and a notch 56 is generated at the broken portion of the outer flange portion 40. In the case of (D), the notch 55 and the outer flange portion 40 are formed at the broken portion of the inner flange portion 30. Protrusions 54 are generated at the broken portions.

図１０～図１３中の（Ｂ）～（Ｄ）のいずれのタイプにおいても、形成された突起５３，５４により、内フランジ部３０と外フランジ部４０とが係合し易くなるため、より安定した再封が可能となる。内フランジ部３０と外フランジ部４０との係合としては、例えば、突起５３と突起５４との係合（Ｂ）、突起５３と係合片４３との係合（Ｂ，Ｃ）、突起５４と係合片３３との係合（Ｂ，Ｄ）が挙げられる。 In any of the types (B) to (D) in FIGS. 10 to 13, the formed protrusions 53 and 54 facilitate the engagement between the inner flange portion 30 and the outer flange portion 40, and thus are more stable. Can be resealed. The engagement between the inner flange portion 30 and the outer flange portion 40 includes, for example, the engagement between the protrusion 53 and the protrusion 54 (B), the engagement between the protrusion 53 and the engagement piece 43 (B, C), and the protrusion 54. And engagement with the engagement piece 33 (B, D).

容器１５Ａ，１５Ｂ（図１０，図１１）では、スリット６０Ａ，６０Ｂが波線形状を有しているため、突起５３，５４が係合片３３，４３に係合し易い。また、容器１５Ｃ，１５Ｄ（図１２，図１３）では、フランジ連結部５０が複数設けられているため、発生した複数の突起５３，５４によって係合片３３，４３との係合が容易になる。したがって、いずれの場合も更に安定した再封が可能となる。 In the containers 15A and 15B (FIGS. 10 and 11), since the slits 60A and 60B have a wavy line shape, the protrusions 53 and 54 are likely to engage with the engaging pieces 33 and 43. Further, in the containers 15C and 15D (FIGS. 12 and 13), since a plurality of flange connecting portions 50 are provided, the plurality of generated protrusions 53 and 54 facilitate engagement with the engaging pieces 33 and 43. .. Therefore, in either case, more stable resealing is possible.

スリット６０Ａ～６０Ｄの両端に位置するフランジ連結部５０は、開封タブ４１を通る対角線ＤＬ（図３～図６）に関して対称に並んでいる。その配置において、開封タブ４１を対角線ＤＬに沿って引っ張るようにすれば、各フランジ連結部５０にかかる力が均等になるため、突起５３，５４が発生し易くなる。その結果、内フランジ部３０と外フランジ部４０との横方向の相対位置の微少なズレにより係合が容易になる。同様の理由で、容器１５Ａ～１５Ｃのように、フランジ連結部５０が対角線ＤＬに対して垂直方向に並ぶことが好ましい。また、開封タブ４１を通る対角線ＤＬに対して垂直方向に延びているスリット６０Ａ，６０Ｃの両端にフランジ連結部５０が位置する場合、突起５３，５４が係合片３３，４３に引っ掛かり易くなって、より安定した再封が可能となる。 The flange connecting portions 50 located at both ends of the slits 60A to 60D are arranged symmetrically with respect to the diagonal DL (FIGS. 3 to 6) passing through the opening tab 41. In that arrangement, if the opening tab 41 is pulled along the diagonal line DL, the force applied to each flange connecting portion 50 becomes equal, so that protrusions 53 and 54 are likely to occur. As a result, engagement becomes easy due to a slight deviation in the lateral relative position between the inner flange portion 30 and the outer flange portion 40. For the same reason, it is preferable that the flange connecting portions 50 are arranged in the direction perpendicular to the diagonal line DL, as in the containers 15A to 15C. Further, when the flange connecting portions 50 are located at both ends of the slits 60A and 60C extending in the direction perpendicular to the diagonal line DL passing through the opening tab 41, the protrusions 53 and 54 are easily caught by the engaging pieces 33 and 43. , More stable resealing is possible.

フランジ連結部５０の幅（言い換えれば、刃止めの距離）は、０．５～０．８ｍｍが好ましい。０．５～０．８ｍｍの幅でフランジ連結部５０を形成することにより、係合のし易さと開封のし易さとのバランスのとれた突起５３，５４が発生し易くなる。 The width of the flange connecting portion 50 (in other words, the distance of the blade stopper) is preferably 0.5 to 0.8 mm. By forming the flange connecting portion 50 with a width of 0.5 to 0.8 mm, protrusions 53 and 54 having a good balance between ease of engagement and ease of opening are likely to occur.

容器１５Ａ～１５Ｄの素材としてはポリプロピレンが好ましい。ポリプロピレンを用いると、破断時に伸びて突起５３，５４が生じ易く、フランジ連結部５２がヒンジ部として機能し易い、というメリットがある。突起５３，５４が生じ易い素材としては、バリア性が必要な場合には多層シート（ＰＰ／ＥＶＯＨ／ＰＰ）が挙げられ、透明性が必要な場合にはＡ－ＰＥＴ（未延伸のアモルファスＰＥＴ）が挙げられる。 Polypropylene is preferable as the material of the containers 15A to 15D. When polypropylene is used, there is an advantage that protrusions 53 and 54 are likely to be formed at the time of breakage, and the flange connecting portion 52 is likely to function as a hinge portion. Examples of the material in which protrusions 53 and 54 are likely to occur include a multilayer sheet (PP / EVOH / PP) when barrier properties are required, and A-PET (unstretched amorphous PET) when transparency is required. Can be mentioned.

図１４に、第１～第４の実施の形態における開封タブ４１付近の蓋接着状態（密封状態）、開封状態及び再封状態の具体例を拡大して図９と同様に示す。図１４において、（Ａ）は容器１５Ａ～１５Ｄに蓋２０が熱接着された状態の蓋付容器１０を示しており、（Ｂ）は開封状態の蓋付容器１０を示しており、（Ｃ）は再封状態の蓋付容器１０を示している。 FIG. 14 shows in the same manner as in FIG. 9 by enlarging specific examples of the lid adhesive state (sealed state), the opened state, and the resealed state in the vicinity of the opening tab 41 in the first to fourth embodiments. In FIG. 14, (A) shows a container with a lid 20 in a state where the lid 20 is heat-bonded to the containers 15A to 15D, and (B) shows a container 10 with a lid in an opened state, (C). Indicates a container with a lid 10 in a resealed state.

開封タブ４１（図１０～図１３）をつまんで引っ張ると、スリット６０Ａ～６０Ｄ（図１４（Ａ））間のフランジ連結部５０が破断されて突起５３，５４が発生するとともに、係合片３３，４３の形成と接着部３４（図１４（Ａ））の剥離とが発生して、蓋付容器１０は開封状態となる（図１４（Ｂ））。フランジ連結部５０の破断部分の状態は、図１０～図１３中の（Ｂ）のタイプであり、内フランジ部３０の破断部分には突起５３が発生し、外フランジ部４０の破断部分には突起５４が発生する。 When the opening tab 41 (FIGS. 10 to 13) is pinched and pulled, the flange connecting portion 50 between the slits 60A to 60D (FIG. 14A) is broken to generate protrusions 53 and 54, and the engaging piece 33 is generated. , 43 is formed and the adhesive portion 34 (FIG. 14 (A)) is peeled off, so that the container 10 with a lid is opened (FIG. 14 (B)). The state of the broken portion of the flange connecting portion 50 is the type (B) in FIGS. 10 to 13, and a protrusion 53 is generated at the broken portion of the inner flange portion 30 and the broken portion of the outer flange portion 40 is formed. The protrusion 54 is generated.

開封タブ４１をつまんで外フランジ部４０及び蓋２０を再度閉じると、図１４（Ｃ）に示すように、係合片４３が上下方向に弾性変形して係合片３３を乗り越え、係合片３３に対して上下方向に係合する。このとき、係合片３３と係合片４３との係合だけでなく、突起５３と突起５４との係合、突起５３と係合片４３との係合、突起５４と係合片３３との係合等も行うことができる。これにより、更に安定した再封が可能となる。 When the opening tab 41 is pinched and the outer flange portion 40 and the lid 20 are closed again, as shown in FIG. 14C, the engaging piece 43 elastically deforms in the vertical direction to get over the engaging piece 33 and get over the engaging piece 33. It engages with 33 in the vertical direction. At this time, not only the engagement between the engagement piece 33 and the engagement piece 43, but also the engagement between the protrusion 53 and the protrusion 54, the engagement between the protrusion 53 and the engagement piece 43, and the protrusion 54 and the engagement piece 33. It is also possible to engage with each other. This enables more stable resealing.

上述した各実施の形態によれば、フランジ連結部５０での破断により外フランジ部４０が内フランジ部３０から分離されると、内フランジ部３０と外フランジ部４０のうちの少なくとも一方の破断部分に突起５３，５４が生じて、内フランジ部３０と外フランジ部４０との効果的な係合が可能になる。したがって、容器１５Ａ～１５Ｄを用いることにより、安定した再封が可能で低コストな蓋付容器１０を実現することができる。 According to each of the above-described embodiments, when the outer flange portion 40 is separated from the inner flange portion 30 by breaking at the flange connecting portion 50, at least one of the inner flange portion 30 and the outer flange portion 40 is broken. The protrusions 53 and 54 are formed on the inner flange portion 30, and the inner flange portion 30 and the outer flange portion 40 can be effectively engaged with each other. Therefore, by using the containers 15A to 15D, it is possible to realize a container 10 with a lid that can be stably resealed and is low in cost.

１０蓋付容器
１５，１５Ａ～１５Ｄ容器
１６収納部
１７開口部
１８底壁
１９突出部
２０蓋
３０内フランジ部
３１突出部
３２リブ
３３係合片
３４接着部
３５凹部
４０外フランジ部
４１開封タブ
４２側壁
４３係合片
４４接着部
５０～５２フランジ連結部
５３，５４突起
５５，５６切り欠き
６０Ａ～６０Ｄ，６１～６３スリット
ＤＬ対角線 10 Container with lid 15, 15A to 15D Container 16 Storage part 17 Opening part 18 Bottom wall 19 Protruding part 20 Lid 30 Inner flange part 31 Protruding part 32 Rib 33 Engaging piece 34 Adhesive part 35 Recessed part 40 Outer flange part 41 Opening tab 42 Side wall 43 Engagement piece 44 Adhesive part 50-52 Flange connection part 53,54 Protrusion 55,56 Notch 60A-60D, 61-63 Slit DL Diagonal line

Claims

A container with an opening,
An annular inner flange portion formed so as to project outward from the peripheral edge of the opening,
An annular outer flange portion formed so as to project outward from the periphery of the inner flange portion,
It has a flange connecting portion that connects the inner flange portion and the outer flange portion so as to be breakable along the circumferential direction between them.
A plurality of the flange connecting portions are formed between the inner flange portion and the outer flange portion, and slits are formed between the flange connecting portions along the circumferential direction.
The outer peripheral portion of the outer flange portion is located above the inner flange portion and can be displaced to the same height as the inner flange portion by elasticity.
When the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion, a protrusion is generated at at least one of the inner flange portion and the outer flange portion, and the inner flange portion is formed. And the outer flange portion can be engaged with each other .
When the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion, the inner flange portion and the outer flange portion can engage with each other at the portions facing each other via the slit. A container characterized by forming an engaging piece .

A container with an opening,
An annular inner flange portion formed so as to project outward from the peripheral edge of the opening,
An annular outer flange portion formed so as to project outward from the periphery of the inner flange portion,
It has a flange connecting portion that connects the inner flange portion and the outer flange portion so as to be breakable along the circumferential direction between them.
A plurality of the flange connecting portions are formed between the inner flange portion and the outer flange portion, and slits are formed between the flange connecting portions along the circumferential direction .
The inner flange portion and the outer flange portion form a substantially rectangular shape having a curved corner portion and two straight line portions adjacent thereto, and the slit is located at one corner portion of the substantially rectangular shape. , The flange connecting portion is located between the corner portion and the two straight portions, respectively.
The slits located at least at the corners have a wavy shape and are located along a straight line or a curved line.
When the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion, a protrusion is generated at at least one of the inner flange portion and the outer flange portion, and the inner flange portion is formed. A container characterized in that it can be engaged with the outer flange portion .

A container with an opening,
An annular inner flange portion formed so as to project outward from the peripheral edge of the opening,
An annular outer flange portion formed so as to project outward from the periphery of the inner flange portion,
It has a flange connecting portion that connects the inner flange portion and the outer flange portion so as to be breakable along the circumferential direction between them.
A plurality of the flange connecting portions are formed between the inner flange portion and the outer flange portion, and slits are formed between the flange connecting portions along the circumferential direction.
The inner flange portion and the outer flange portion form a substantially rectangular shape having a curved corner portion and two straight line portions adjacent thereto, and the slit is located at one corner portion of the substantially rectangular shape. , The flange connecting portion is located between the corner portion and the two straight portions, respectively.
An opening tab that serves as a knob when the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion is provided at a corner portion where the slit is located.
When the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion, a protrusion is generated at at least one of the inner flange portion and the outer flange portion, and the inner flange portion is formed. A container characterized in that it can be engaged with the outer flange portion.

A container with an opening,
An annular inner flange portion formed so as to project outward from the peripheral edge of the opening,
An annular outer flange portion formed so as to project outward from the periphery of the inner flange portion,
It has a flange connecting portion that connects the inner flange portion and the outer flange portion so as to be breakable along the circumferential direction between them.
A plurality of the flange connecting portions are formed between the inner flange portion and the outer flange portion, and slits are formed between the flange connecting portions along the circumferential direction.
The inner flange portion and the outer flange portion form a substantially rectangular shape having a curved corner portion and two straight line portions adjacent thereto, and the slit is located at one corner portion of the substantially rectangular shape. , The flange connecting portion is located between the corner portion and the two straight portions, respectively.
The slit is also located on the diagonal portion of the corner portion where the slit is located, and the hinge portion composed of the flange connecting portion is located between the diagonal portion and the two linear portions adjacent thereto.
When the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion, a protrusion is generated at at least one of the inner flange portion and the outer flange portion, and the inner flange portion is formed. A container characterized in that it can be engaged with the outer flange portion.

The outer peripheral portion of the outer flange portion is located above the inner flange portion and can be displaced to the same height as the inner flange portion by elasticity.
When the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion, the inner flange portion and the outer flange portion can engage with each other at the portions facing each other via the slit. The container according to any one of claims 2 to 4, wherein an engaging piece is formed.

The third or fourth aspect of the present invention, wherein a plurality of slits having a linear shape or a curved shape are located at least in the corner portion, and the flange connecting portion is located between the slits located in the corner portion. container.

The container according to any one of claims 1 to 6 , wherein the inner flange portion, the outer flange portion, and the flange connecting portion are integrally formed as a resin molded body.

A container with an opening,
An annular inner flange portion formed so as to project outward from the peripheral edge of the opening,
An annular outer flange portion formed so as to project outward from the periphery of the inner flange portion,
A plurality of flange connecting portions that fractureably connect the inner flange portion and the outer flange portion with a plurality of slits formed along the circumferential direction between them.
As a resin molded body integrally formed with
The inner flange portion and the outer flange portion form a substantially rectangular shape having curved corner portions, and at least one of the plurality of slits is located in one corner portion of the substantially rectangular portion. The flange connecting portions located at both ends of the slit are arranged symmetrically with respect to the diagonal line of the substantially rectangular shape.
A container characterized in that an opening tab serving as a knob for separating the outer flange portion from the inner flange portion due to a break at the flange connecting portion is provided at a corner portion where the slit is located.

The container according to any one of claims 1 to 8 is provided with a lid bonded to the inner flange portion and the outer flange portion so as to cover the opening.
When the outer flange portion is separated from the inner flange portion due to a break at the flange connecting portion, the lid is separated from the inner flange portion together with the outer flange portion to be in an opened state. Attached container.