JP7474483B2 - Food packaging containers - Google Patents

Food packaging containers Download PDF

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JP7474483B2
JP7474483B2 JP2020097224A JP2020097224A JP7474483B2 JP 7474483 B2 JP7474483 B2 JP 7474483B2 JP 2020097224 A JP2020097224 A JP 2020097224A JP 2020097224 A JP2020097224 A JP 2020097224A JP 7474483 B2 JP7474483 B2 JP 7474483B2
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film
food packaging
upper edge
inner container
frame material
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伊智郎 柴田
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ACTA CO., LTD.
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Description

本発明は、ごはん類、麺類、各種惣菜などの食品を収納し、食品を収納した容器の上面をトップシールして密封することができる食品包装用容器に関する。 The present invention relates to a food packaging container that can store food such as rice, noodles, and various side dishes, and can hermetically seal the top surface of the container that stores the food.

特許文献１（特開２００５－３５５５０号公報）に記載されているように、食品等の包装用容器において、内容物の保存や保護のため、容器本体の上縁部にシート又はフィルム蓋材をシールすることにより密封するとともに、その蓋材を容易に剥離できるようにすることが知られている。
そして、本出願人は、特許文献２（特許第６６３２４８９号公報）に記載されているように、内容器(1)及び縁枠(2)を備え、内容器(1)の隅部の内側に上方へ延びる突起(13) (14)が設けてある食品包装用容器を提案し、特許文献３（実用新案登録第３２００７７６号公報）に記載されているように、内容器(1)、枠材(2)及び蓋(3)を備え、内容器(1)の四隅の内側に上方に突出する突起(16)が設けられ、蓋(3)の四隅に突起(16)をそれぞれ収容可能な凹部(31)が設けてある食品包装用容器を提案している。 As described in Patent Document 1 (JP Patent Publication No. 2005-35550), it is known that in packaging containers for food and the like, in order to preserve and protect the contents, a sheet or film lid is sealed to the upper edge of the container body to seal the container and also to make the lid easily peelable.
The applicant has proposed a food packaging container comprising an inner container (1) and a rim (2), with projections (13) (14) extending upwardly provided on the inside of the corners of the inner container (1), as described in Patent Document 2 (Japanese Patent No. 6632489), and a food packaging container comprising an inner container (1), a frame (2), and a lid (3), with projections (16) protruding upwardly provided on the inside of the four corners of the inner container (1), and with recesses (31) capable of accommodating the projections (16) provided at the four corners of the lid (3) as described in Patent Document 3 (Utility Model Registration No. 3200776).

特許文献２及び３に記載の食品包装用容器は、上記のような構造となっているため、複数の食品包装用容器を上下に積み重ねると、下側の内容器の隅部に設けてある突起が上側にある縁枠（枠材）の下端部内面に接し、上下の食品包装用容器が互いにずれることがないので、積み重ねた状態を保ち易く容易に運搬することができ、また、特許文献３に記載の食品包装用容器は蓋もずれにくく保持できるため使い勝手が良い。
しかし、特許文献２及び３に記載の食品包装用容器は、内容器の隅部又は四隅の内側に突起が設けてあるため、特許文献１に記載されているようなシート又はフィルム蓋材を、容器本体の上縁部にシールして、内容器に収納した食品を密封することができないという問題があった。 The food packaging containers described in Patent Documents 2 and 3 have the structure described above, so that when multiple food packaging containers are stacked one on top of the other, the protrusions provided at the corners of the lower inner container come into contact with the inner surface of the lower end of the upper edge frame (frame material), and the upper and lower food packaging containers do not shift relative to each other, making them easy to maintain in a stacked state and to transport.In addition, the lid of the food packaging container described in Patent Document 3 can be held in place without slipping, making it easy to use.
However, the food packaging containers described in Patent Documents 2 and 3 have protrusions on the inside of the corners or four corners of the inner container, which means that a sheet or film lid material such as that described in Patent Document 1 cannot be sealed to the upper edge of the container body to seal the food stored in the inner container.

特開２００５－３５５５０号公報JP 2005-35550 A 特許第６６３２４８９号公報Patent No. 6632489 実用新案登録第３２００７７６号公報Utility Model Registration No. 3200776

本発明は、特許文献２及び３に記載の食品包装用容器が有している上記の問題を解決し、内容器の隅部に突起を有するタイプの食品包装用容器において、内容器の上縁部にシート又はフィルム蓋材（以下、単に「フィルム」という。）を固着できるようにして、内容器に収納する食品を密封可能とすることを第１の課題とし、内容器の上縁部に固着されたフィルムを容易に剥離できるようにすることを第２の課題としてなされたものである。 The present invention solves the above problems of the food packaging containers described in Patent Documents 2 and 3, and has as its first objective the ability to seal food stored in a food packaging container of the type having protrusions at the corners of the inner container by allowing a sheet or film lid material (hereinafter simply referred to as "film") to be attached to the upper edge of the inner container, and as its second objective the ability to easily peel off the film attached to the upper edge of the inner container.

請求項１に係る発明の食品包装用容器は、内容器、枠材及びフィルムからなる食品包装用容器であって、
前記枠材は、前記内容器を収容可能であり、
前記内容器の上縁部は、前記内容器を前記枠材に収容した状態で、前記枠材の上端部に固定可能であり、
前記上縁部の複数の隅部には、上方に突出する突起が設けてあり、
前記上縁部は、前記突起を除いて平坦面であり、
前記突起と前記複数の隅部の内側との間には前記上縁部と同じ高さの平坦部があり、
前記突起の外側と前記上縁部の外縁との距離は連続して前記枠材の厚みより大きく、
前記上縁部の一部であって隣接する前記平坦部をつなぐ部分及び全ての前記平坦部によって連続した環状のシール部が構成され、
前記フィルムは、前記環状のシール部に固着可能であることを特徴とする。 The food packaging container according to the invention of claim 1 is a food packaging container comprising an inner container, a frame material, and a film,
The frame material is capable of accommodating the inner container,
an upper edge portion of the inner container can be fixed to an upper end portion of the frame material in a state in which the inner container is accommodated in the frame material;
The upper edge portion has a plurality of corners each having a projection projecting upward therefrom,
the upper edge portion is a flat surface except for the protrusion;
a flat portion flush with the upper edge between the protrusion and the inside of the corners;
the distance between the outer side of the protrusion and the outer edge of the upper edge portion is continuously greater than the thickness of the frame material;
a continuous annular seal portion is formed by a portion of the upper edge portion that connects adjacent flat portions and by all of the flat portions;
The film is characterized in that it is capable of being adhered to the annular seal portion.

請求項２に係る発明の食品包装用容器は、請求項１に記載の食品包装用容器において、
前記フィルムは、前記環状のシール部への固着時において、前記突起との干渉を避ける穴、切欠き又は切れ目を有していることを特徴とする。 The food packaging container of the invention according to claim 2 is the food packaging container according to claim 1,
The film is characterized by having a hole, a notch or a slit for avoiding interference with the protrusion when the film is attached to the annular seal portion.

請求項３に係る発明の食品包装用容器は、請求項１又は２に記載の食品包装用容器において、
前記フィルムは、前記環状のシール部に固着される固着部と、該固着部の外側にある非固着部を有していることを特徴とする。 The food packaging container according to the invention of claim 3 is the food packaging container according to claim 1 or 2,
The film has a fixed portion that is fixed to the annular seal portion, and a non-fixed portion that is located outside the fixed portion.

請求項１に係る発明の食品包装用容器は、上縁部の複数の隅部に、上方に突出する突起が設けてあり、かつ、突起の外側と上縁部の外縁との距離は連続して枠材の厚みより大きいので、複数の食品包装用容器を上下に積み重ねると、上側にある枠材の下端の隅部を突起の外側と上縁部の外縁との間に載せることができ、上下の食品包装用容器が互いにずれることなく、積み重ねた状態を保ちながら容易に運搬することができる。
また、上縁部は突起を除いて平坦面であり、突起と複数の隅部の内側との間には上縁部と同じ高さの平坦部があり、上縁部の一部であって隣接する平坦部をつなぐ部分及び全ての平坦部によって連続した環状のシール部が構成され、フィルムは環状のシール部に固着可能であるので、内容器の内部に各種食品を収納した後にフィルムを環状のシール部に固着することにより、内容器に収納した食品を密封することができる。
そのため、食品包装用容器の運搬中における汁漏れを防止でき、また、収納した食品の日持ちを良くすることができる。なお、フィルムをバリアフィルムにしたり、脱酸素剤を併用したりすれば、より高い効果が得られる。 The food packaging container of the invention of claim 1 has upwardly protruding protrusions at multiple corners of the upper edge, and the distance between the outside of the protrusions and the outer edge of the upper edge is continuously greater than the thickness of the frame material.Therefore, when multiple food packaging containers are stacked one on top of the other, the corners of the lower end of the upper frame material can be placed between the outside of the protrusions and the outer edge of the upper edge , and the upper and lower food packaging containers can be easily transported while remaining stacked without shifting relative to each other.
In addition, the upper edge portion is a flat surface except for the protrusion, and there are flat portions of the same height as the upper edge portion between the protrusion and the inside of the multiple corners, and a continuous annular seal portion is formed by part of the upper edge portion connecting adjacent flat portions and all of the flat portions, and the film can be fixed to the annular seal portion, so that the food stored in the inner container can be sealed by storing various foods inside the inner container and then fixing the film to the annular seal portion.
This prevents juice from leaking from the food packaging container during transportation and improves the shelf life of the food stored in it. If the film is a barrier film or an oxygen scavenger is used in combination, even greater effects can be obtained.

請求項２に係る発明によれば、請求項１に係る発明の食品包装用容器による効果に加えて、フィルムは、環状のシール部への固着時において、突起との干渉を避ける穴、切欠き又は切れ目を有しているので、環状のシール部に固着したフィルムが、突起によって跳ね上がってしまうことを防止でき、フィルム固着時における見栄えが良くなるとともに、複数の食品包装用容器を上下に積み重ねたり蓋を被せたりする際に、固着したフィルムが邪魔にならないという利点がある。 According to the invention of claim 2, in addition to the effect of the food packaging container of the invention of claim 1, the film has holes, notches or slits that avoid interference with the protrusions when it is attached to the annular seal, so the film attached to the annular seal can be prevented from jumping up due to the protrusions, improving the appearance when the film is attached, and there is an advantage that the attached film does not get in the way when multiple food packaging containers are stacked one on top of the other or when lids are placed on them.

請求項３に係る発明によれば、請求項１又は２に係る発明の食品包装用容器による効果に加えて、フィルムが環状のシール部に固着される固着部と、該固着部の外側にある非固着部を有しているので、非固着部を手掛かりとすることによって、環状のシール部に固着されているフィルムを容易に剥がすことができる。 According to the invention of claim 3, in addition to the effects of the food packaging container of the invention of claim 1 or 2, the film has a fixed part that is fixed to the annular seal part and a non-fixed part that is located outside the fixed part, so that the film fixed to the annular seal part can be easily peeled off by using the non-fixed part as a clue.

実施例に係る食品包装用容器にフィルムを固着する前の斜視図。FIG. 2 is a perspective view of a food packaging container according to an embodiment before a film is adhered to the container. 実施例に係る食品包装用容器にフィルムを固着した後の斜視図。FIG. 2 is a perspective view of the food packaging container according to the embodiment after a film has been adhered thereto. 食品包装用容器からフィルムを剥がす方法について説明する図。FIG. 1 is a diagram illustrating a method for peeling a film from a food packaging container. フィルムの四隅に設ける切欠きや切れ目の例を示す図。1A to 1C are diagrams showing examples of notches and cuts provided at the four corners of a film.

以下、実施例によって本発明の実施形態を説明する。 The following describes the embodiment of the present invention using examples.

図１は実施例に係る食品包装用容器にフィルム１を固着する前の斜視図、図２は実施例に係る食品包装用容器にフィルム１を固着した後の斜視図である。
図１に示すとおり、実施例に係る食品包装用容器は、薄いプラスチック製で一体成形により作製された内容器２と、折り畳み可能で開いた時に直方体状となる枠材３と、透明なプラスチックシートにより作製されたフィルム１からなっている。 FIG. 1 is a perspective view of a food packaging container according to the embodiment before a film 1 is adhered thereto, and FIG. 2 is a perspective view of a food packaging container according to the embodiment after a film 1 is adhered thereto.
As shown in FIG. 1, the food packaging container of the embodiment comprises an inner container 2 made of a thin plastic and produced by integral molding, a frame material 3 that is foldable and forms a rectangular parallelepiped shape when opened, and a film 1 made of a transparent plastic sheet.

内容器２は、大小合わせて６つの食品収納用凹部を有しており、上縁部４の外縁には下方に延びる垂下部５が設けてあり、側壁６の外側には上縁部４に沿って平行に突条７が設けてある。
そして、上縁部４の四隅は略三角形状の平坦面となっており、その中央付近に上方に突出するＬ字状の突起８が設けてあり、突起８と上縁部４の外縁との距離は枠材３の厚みより大きい。
また、突起８と略三角形状の平坦面となっている隅部の内側との間には平坦部９があり、上縁部４の４つの直線部及び４つの平坦部９によって連続した環状のシール部１０（図１及び２において模様を付してある部分）が構成される。 The inner container 2 has six food storage recesses of various sizes, a downwardly extending hanging portion 5 is provided on the outer edge of the upper edge 4, and a protrusion 7 is provided on the outside of the side wall 6 parallel to the upper edge 4.
The four corners of the upper edge 4 are flat surfaces of an approximately triangular shape, and an L-shaped protrusion 8 protruding upward is provided near the center. The distance between the protrusion 8 and the outer edge of the upper edge 4 is greater than the thickness of the frame material 3.
In addition, there is a flat portion 9 between the protrusion 8 and the inside of the corner portion which is a substantially triangular flat surface, and the four straight portions and four flat portions 9 of the upper edge portion 4 form a continuous annular seal portion 10 (the portion with a pattern in Figures 1 and 2).

枠材３は、発泡プラスチックの板を環状に接続したものであり、４箇所において折り曲げ可能で、発泡プラスチックの板を２枚重ねた状態に折り畳めるようになっている。
また、図示はしないが、枠材３の内面には上端部に沿って平行に溝条が設けてある。
そして、枠材３を折り畳まれた状態から開いて直方体状とした後に、上方から内容器２を落とし込み、枠材３の上端部を内容器２の上縁部４、垂下部５及び側壁６との間に挿入するとともに、内容器２の突条７を枠材３の溝条に嵌合させることにより、容器部分を組み立てることができ、組み立て後は内容器２が枠材３の上端部に固定され、内容器２と枠材３が分離しにくい状態となる。 The frame material 3 is made by connecting foamed plastic plates in a ring shape, and can be bent at four points so that the foamed plastic plates can be folded into two layers.
Although not shown, the inner surface of the frame material 3 is provided with parallel grooves along the upper end portion.
Then, after the frame material 3 is opened from its folded state to form a rectangular parallelepiped, the inner container 2 is dropped in from above and the upper end of the frame material 3 is inserted between the upper edge 4, hanging portion 5 and side wall 6 of the inner container 2, while the protrusions 7 of the inner container 2 are fitted into the grooves of the frame material 3, thereby assembling the container portion. After assembly, the inner container 2 is fixed to the upper end of the frame material 3, making it difficult for the inner container 2 and frame material 3 to separate.

フィルム１は、内容器２の上面全体を覆うことができる長方形状であり、環状のシール部１０への固着時において、突起８との干渉を避けるため、四隅の近傍に三角形状の穴１１が設けてある。
そのため、フィルム１を環状のシール部１０に固着した時に、フィルム１が突起８によって跳ね上がらず、図２に示すように、フィルム１全体が平らな状態となる。
内容器２、枠材３及びフィルム１からなる食品包装用容器を利用するに際しては、まず、直方体状とした枠材３の上方から内容器２を落とし込んで容器部分を組み立てる。
そして、内容器２の食品収納用凹部に食品を収納した後、フィルム１を環状のシール部１０に固着して内容器２の内部を密閉し、必要ならば蓋（図示せず）を被せて出荷する。
また、複数の食品包装用容器を積み重ねて出荷する場合には、下側になる食品包装用容器の内容器２の上縁部４に、上側になる食品包装用容器の枠材３の下端部を載置する。
そうすると、Ｌ字状の突起８と上縁部４の外縁との距離は、枠材３の厚みより大きく設定されているので、上側になる食品包装用容器の枠材３の下端部は、下側になる食品包装用容器の突起８に乗り上げることなく、内容器２の上縁部４に積み重なる。
さらに、上側になる食品包装用容器の枠材３の四隅の内側には、下側になる食品包装用容器の突起８が位置するので、上下の食品包装用容器は互いにずれることなく積み重ねた状態が保たれ、積み重ねた複数の食品包装用容器を容易に運搬することができる。 The film 1 is rectangular in shape so as to cover the entire top surface of the inner container 2, and has triangular holes 11 near the four corners to avoid interference with the protrusions 8 when the film 1 is attached to the annular seal portion 10.
Therefore, when the film 1 is fixed to the annular seal portion 10, the film 1 does not bounce up due to the protrusions 8, and the entire film 1 remains flat as shown in FIG.
When using a food packaging container consisting of the inner container 2, frame material 3 and film 1, first, the inner container 2 is dropped from above the rectangular parallelepiped frame material 3 to assemble the container portion.
After food has been stored in the food storage recess of the inner container 2, the film 1 is attached to the annular seal portion 10 to seal the inside of the inner container 2, and if necessary, a lid (not shown) is placed on the container prior to shipment.
In addition, when multiple food packaging containers are stacked for shipment, the lower end portion of the frame material 3 of the upper food packaging container is placed on the upper edge portion 4 of the inner container 2 of the lower food packaging container.
In this way, the distance between the L-shaped protrusion 8 and the outer edge of the upper edge 4 is set to be greater than the thickness of the frame material 3, so that the lower end of the frame material 3 of the upper food packaging container is stacked on the upper edge 4 of the inner container 2 without riding on the protrusion 8 of the lower food packaging container.
Furthermore, since the protrusions 8 of the lower food packaging container are positioned inside the four corners of the frame material 3 of the upper food packaging container, the upper and lower food packaging containers are kept stacked without shifting relative to each other, and the stacked multiple food packaging containers can be easily transported.

図３は食品包装用容器からフィルム１を剥がす方法について説明する図である。
内容器２の食品収納用凹部に食品が収納され、フィルム１によって内容器２の内部が密閉された食品包装用容器を入手した利用者が、内容器２に収納された食品を食べる時には、まずフィルム１を環状のシール部１０から剥がす必要がある。
そこで、実施例の食品包装用容器においては、フィルム１を環状のシール部１０に固着するとともに、穴１１の外側（突起８の外側）に位置するフィルム１は上縁部４に固着しないようにしている。すなわち、フィルム１は、環状のシール部１０に固着される固着部と、穴１１の外側に位置する非固着部を有していることになる。
そのため、利用者は図３に示すように、穴１１の外側部分（フィルム１の四隅部分）のいずれかを、指でつまんで持ち上げることができる。
そして、つまんだフィルム１を対角線上にある内容器２の隅部に向けて引っ張ることにより、環状のシール部１０に固着されているフィルム１を容易に剥がすことができる。 FIG. 3 is a diagram illustrating a method for peeling the film 1 from the food packaging container.
When a user who has obtained a food packaging container in which food is stored in a food storage recess of an inner container 2 and the inside of the inner container 2 is sealed with a film 1 eats the food stored in the inner container 2, he or she must first peel off the film 1 from the annular seal part 10.
Therefore, in the food packaging container of the embodiment, the film 1 is fixed to the annular seal portion 10, and the film 1 located outside the hole 11 (outside the protrusion 8) is not fixed to the upper edge portion 4. In other words, the film 1 has a fixed portion that is fixed to the annular seal portion 10 and a non-fixed portion that is located outside the hole 11.
Therefore, as shown in FIG. 3, a user can pinch any of the outer portions of the hole 11 (the four corners of the film 1) with his/her fingers and lift it up.
Then, by pulling the pinched film 1 toward the diagonally opposite corner of the inner container 2, the film 1 fixed to the annular seal portion 10 can be easily peeled off.

実施例の変形例を列記する。
（１）実施例においては、フィルム１、内容器２及び枠材３の平面視は、いずれも長方形状であったが、多角形状、円形状、楕円形状等どのような形状であっても良い。
そして、円形状又は楕円形状とした場合には、適宜の位置を隅部とみなして平坦面を設け、その中央付近に突起８を設けるとともに、その内側を平坦部９とすれば良い。
（２）実施例のフィルム１は、透明なプラスチックシートにより作製されていたが、透明でなくても良く、薄い紙製であっても良い。
（３）実施例のフィルム１は、環状のシール部１０への固着時において、突起８との干渉を避ける穴１１を有していたが、穴１１の代わりに図４（Ａ）～（Ｃ）に示すような切欠きや図４（Ｄ）（Ｅ）に示すようなＴ字状又はＹ字状の切れ目としても良く、また、長方形のフィルムの四隅をカットして突起８の内側に収まる大きさとしても良い。
（４）実施例のフィルム１は、突起との干渉を避ける穴１１の外側を内容器２の上縁部４に固着しない非固着部としたが、穴１１の外側に限らず適宜位置の固着部の外側を非固着部としても良い。 Modifications of the embodiment are listed below.
(1) In the embodiment, the film 1, the inner container 2 and the frame material 3 are all rectangular in plan view, but they may be any shape, such as polygonal, circular, or elliptical.
When the shape is circular or elliptical, a suitable position is regarded as a corner, a flat surface is provided, a protrusion 8 is provided near the center, and the inside of this is made into a flat portion 9.
(2) In the embodiment, the film 1 is made of a transparent plastic sheet, but it does not have to be transparent and may be made of thin paper.
(3) The film 1 in the embodiment has holes 11 to avoid interference with the protrusions 8 when it is adhered to the annular seal portion 10. However, instead of holes 11, notches as shown in FIGS. 4(A) to (C) or T- or Y-shaped slits as shown in FIGS. 4(D) and (E) may be used. Also, the four corners of a rectangular film may be cut to a size that fits inside the protrusions 8.
(4) In the embodiment, the film 1 has a non-adhered portion that is not adhered to the upper edge portion 4 of the inner container 2 on the outside of the hole 11 to avoid interference with the protrusion. However, the non-adhered portion may be the outside of the adhered portion at any appropriate position, not limited to the outside of the hole 11.

（５）実施例の内容器２は、一体成形により作製された薄いプラスチック製のものであったが、プラスチック製に限らずコーティングを施した紙製であっても良い。
（６）実施例の内容器２は、６つの食品収納用凹部を有していたが、食品収納用凹部の数、大きさ及び配置は適宜選択可能である。
（７）実施例の枠材３は、発泡プラスチックの板を環状に接続したものであったが、発泡プラスチックの板に限らず、硬質プラスチック製、木製、紙製等適当な厚さと強度を有する板であればどのような材質の板であっても良い。
（８）実施例においては、枠材３を折り畳めるものとしたが、折り畳めないものであっても良い。 (5) In the embodiment, the inner container 2 is made of thin plastic and is produced by one-piece molding. However, it is not limited to plastic and may be made of coated paper.
(6) Although the inner container 2 in the embodiment has six food storage recesses, the number, size and arrangement of the food storage recesses can be selected as appropriate.
(7) In the embodiment, the frame material 3 was made by connecting foamed plastic plates in a ring shape, but it is not limited to foamed plastic plates. Plates of any material, such as hard plastic, wood, paper, etc., may be used as long as they have the appropriate thickness and strength.
(8) In the embodiment, the frame material 3 is foldable, but it may be non-foldable.

（９）実施例においては、内容器２の側壁６の外側に突条７を設け、枠材３の内面に溝条を設けていたが、これらは設けなくても良い。
（１０）実施例においては、内容器２の上縁部４の外縁に下方に延びる垂下部５を設けたが、垂下部５を設けずに、内容器２の上縁部４の下面を枠材３の上端面に、接着や融着等の手段によって固定しても良い。
（１１）実施例の突起８は、Ｌ字状であったが、上縁部４の隅部に突出するものであれば、どのような形状であっても良い。
そうした場合、フィルム１に設ける穴１１の形状も適宜変更した方が良い。
（１２）実施例の突起８は、上縁部４の四隅に設けてあったが、複数の隅部のみ、好ましくは対角線上の２つの隅部又は３つの隅部に設けても良い。 (9) In the embodiment, the ridges 7 are provided on the outside of the side wall 6 of the inner container 2 and the grooves are provided on the inside of the frame material 3, but these do not have to be provided.
(10) In the embodiment, a hanging portion 5 extending downward is provided on the outer edge of the upper edge 4 of the inner container 2. However, without providing the hanging portion 5, the lower surface of the upper edge 4 of the inner container 2 may be fixed to the upper end surface of the frame material 3 by means of adhesion, fusion or the like.
(11) Although the projection 8 in the embodiment is L-shaped, it may be of any shape as long as it protrudes from the corner of the upper edge portion 4.
In such a case, it is better to change the shape of the hole 11 provided in the film 1 as appropriate.
(12) In the embodiment, the projections 8 are provided at the four corners of the upper edge portion 4. However, they may be provided at only a plurality of corners, preferably at two or three diagonal corners.

１ フィルム ２ 内容器 ３ 枠材
４ 上縁部 ５ 垂下部 ６ 側壁 ７ 突条
８ 突起 ９ 平坦部 １０ シール部 １１ 穴 REFERENCE SIGNS LIST 1 film 2 inner container 3 frame material 4 upper edge 5 hanging portion 6 side wall 7 protrusion 8 projection 9 flat portion 10 seal portion 11 hole

Claims (3)

内容器、枠材及びフィルムからなる食品包装用容器であって、
前記枠材は、前記内容器を収容可能であり、
前記内容器の上縁部は、前記内容器を前記枠材に収容した状態で、前記枠材の上端部に固定可能であり、
前記上縁部の複数の隅部には、上方に突出する突起が設けてあり、
前記上縁部は、前記突起を除いて平坦面であり、
前記突起と前記複数の隅部の内側との間には前記上縁部と同じ高さの平坦部があり、
前記突起の外側と前記上縁部の外縁との距離は連続して前記枠材の厚みより大きく、
前記上縁部の一部であって隣接する前記平坦部をつなぐ部分及び全ての前記平坦部によって連続した環状のシール部が構成され、
前記フィルムは、前記環状のシール部に固着可能である
ことを特徴とする食品包装用容器。 A food packaging container consisting of an inner container, a frame material, and a film,
The frame material is capable of accommodating the inner container,
an upper edge portion of the inner container can be fixed to an upper end portion of the frame material in a state in which the inner container is accommodated in the frame material;
The upper edge portion has a plurality of corners each having a projection projecting upward therefrom,
the upper edge portion is a flat surface except for the protrusion;
a flat portion flush with the upper edge between the protrusion and the inside of the corners;
the distance between the outer side of the protrusion and the outer edge of the upper edge portion is continuously greater than the thickness of the frame material;
a continuous annular seal portion is formed by a portion of the upper edge portion that connects adjacent flat portions and by all of the flat portions;
The food packaging container, characterized in that the film is capable of being adhered to the annular seal portion. 前記フィルムは、前記環状のシール部への固着時において、前記突起との干渉を避ける穴、切欠き又は切れ目を有している
ことを特徴とする請求項１に記載の食品包装用容器。 2. The food packaging container according to claim 1, wherein the film has a hole, a notch or a slit for avoiding interference with the protrusion when the film is attached to the annular seal portion. 前記フィルムは、前記環状のシール部に固着される固着部と、該固着部の外側にある非固着部を有している
ことを特徴とする請求項１又は２に記載の食品包装用容器。 3. The food packaging container according to claim 1, wherein the film has a fixed portion that is fixed to the annular seal portion and a non-fixed portion that is located outside the fixed portion.
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