JP4169431B2 - Heat insulating container - Google Patents

Heat insulating container Download PDF

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Publication number
JP4169431B2
JP4169431B2 JP10662499A JP10662499A JP4169431B2 JP 4169431 B2 JP4169431 B2 JP 4169431B2 JP 10662499 A JP10662499 A JP 10662499A JP 10662499 A JP10662499 A JP 10662499A JP 4169431 B2 JP4169431 B2 JP 4169431B2
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Japan
Prior art keywords
heat insulating
container
insulating member
side wall
container body
Prior art date
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Expired - Fee Related
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JP10662499A
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Japanese (ja)
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JP2000296832A (en
Inventor
邦夫 山内
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Nissin Food Products Co Ltd
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Nissin Food Products Co Ltd
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Publication of JP2000296832A publication Critical patent/JP2000296832A/en
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Description

【0001】
【発明の属する技術分野】
本発明は、即席麺、即席スープ等のインスタント食品または電子レンジにて解凍調理する冷凍食品等に使用するための断熱性容器に関するものである。
【0002】
【従来の技術】
従来、上記即席麺等の食品を収容する断熱性容器としては紙製のものが多く、カップ状の容器本体の外側面に筒状の断熱部材が装着された二重構造を有するものが多用されている。上記容器本体には、一般的に、上端部を外側にカーリングすることによって、側壁に連続してカール部が形成されている。
【0003】
上述の断熱性容器に関する先行発明としては、例えば特開平4−201840号公報、特開平7−223683号公報があり、断熱部材の上端部を容器本体のカール部近傍に位置させるか又はカール部に接するように位置させた断熱性容器が開示され、実開平6−48474号公報には断熱部材の上端部を容器本体のカール部と側壁との間に挿嵌した断熱性容器が開示されている。
【0004】
【発明が解決しようとする課題】
上記従来の断熱性容器にあっては、断熱部材の容器本体への装着時に容器本体に対し断熱部材を下方から外嵌しようとした場合、断熱部材が紙製のため、断熱部材が容器本体のカール部に添って外側に折れ曲がったり、カール部下面に当接した状態でつぶれたり、あるいはそれによって断熱部材と容器本体との中心軸にズレが生じてしまうという不都合があった。
【0005】
本発明はこれらの不都合に鑑みてなされたものであり、容器本体に対して断熱部材の装着が容易かつ強固になり、その結果、断熱性、強度、製造性に優れた断熱性容器の提供を目的とするものである。
【0006】
【課題を解決するための手段】
上記課題を解決するためになされた発明は、a)カップ状の容器本体と、前記容器本体の側壁外面を被覆するように装着される断熱部材とを装備し、
b)前記容器本体は、側壁に連続して、上端部(開口周縁部)を外側にカーリングしてなるカール部を有し、
c)前記断熱部材は、上端部(上方開口周縁部)が半径方向内側に屈曲されており、
d)前記断熱部材の上端部が容器本体の側壁とカール部との隙間に挿嵌されている断熱性容器である。
【0007】
この発明の断熱性容器によれば、前記断熱部材の上端部が半径方向内側に屈曲していることから、断熱部材を容器本体下方から外嵌するよう装着する場合に、断熱部材の先端部が容器本体の側壁外面に沿い、かつ、カール部の内側に当接して押圧された状態で挿嵌されることとなることから、断熱部材の容器本体に対する挿嵌時のガイド機能と挿嵌後の容器本体に対する断熱部材のセンタリング機能を果たすことができる。また、断熱部材の上端部が半径方向内側に屈曲していることから、断熱部材が容器本体のカール部に添って外側に折れ曲がったり、カール部下面に当接した状態でつぶれたりすることを防止できる。さらに、断熱部材の屈曲した先端部分(以下、屈曲部という)が容器本体の側壁外面およびカール部内面に当接するように挿嵌されているため、前記屈曲部とカール部が相互に押圧する結果となり、挿嵌強度を高めることができる。また、前記屈曲部の弾発力によって容器本体のカール部に対して拡径する方向に力が作用することから、当該断熱性容器の開口部の強度を高めることができる。更に、上記断熱部材の上端の内径(装着前の内径を意味する)を上記側壁の上端の外径より若干小さくすることで、前記屈曲部のカール部内側への挿嵌をよりスムーズに行うことができ、容器本体に対する断熱部材のセンタリングをより確実に行うことができ、かつ、容器の開口部の強度をより高めることができる。
【0008】
上記容器本体を合成樹脂製とし、前記断熱部材を紙製とするとよい。この手段によれば、合成樹脂の弾力と紙の剛性により前記断熱部材の上端部をカール部と側壁との間へ挿嵌することが容易になり、製造性を向上させることができる。また、容器内に収容する食品の保存性は低コストでバリアー性に優れた合成樹脂製の容器本体で維持でき、容器自体の剛性は断熱部材を紙の厚さを調整することで維持できるため、容器全体の軽量化、低コスト化を図ることができる。更に、容器使用後は、容器本体と断熱部材を分離して廃棄処分することがてきるので資源のリサイクル面においても好ましい。
【0009】
上記容器本体の側壁外面と断熱部材の内側面との間に空隙を有するものにするとよい。この手段によれば、前記空隙が断熱層となり、当該断熱性容器の断熱性を向上させることができる。
【0010】
【発明の実施の形態】
以下、適宜図面を参照しつつ本発明の実施の形態を詳説する。図1は本発明の一実施形態に係る断熱性容器を示す部分切欠正面図で、図2(a)及び(b)は図1の断熱性容器の容器本体に対する断熱部材の挿嵌を説明する工程図で、図3は、図1の断熱性容器とは異なる形態に係る断熱性容器を示す部分切欠正面図である。
【0011】
図1の断熱性容器1は、容器本体2と断熱部材3とからなる。この容器本体2は、円筒状の側壁4と底壁5とを有し、上方が開口したカップ状の容器である。この側壁4は、上方ほど拡径するテーパー状に形成されている。さらに、側壁4の上端に連続して、上端部を外側にカーリングしてなるカール部6が設けられている。
【0012】
容器本体1の材質としては、紙、合成樹脂、またはそれらの積層体等が挙げられ、収容する食品の種類によりその調理方法、保存性を考慮して適宜決定されるものであり特に限定されない。ただし、コストを考慮すると食品保存のための最低限のバリアー性を維持できる合成樹脂が好ましい。
【0013】
断熱部材3は、上記容器本体2の側壁4と同様に、上方ほど拡径するテーパー状に形成された筒状体であり、容器本体2の側壁4の外面に沿うように形成されている。かかる断熱部材3の上端部には、半径方向内側に所定の角度屈曲する屈曲部7が形成されている。この屈曲部7先端の径は、側壁4の上端の径よりも若干小さくなるように形成されている。なお、断熱部材3の下端部には内側にカーリングしてなるカール部8が形成され、容器本体2への装着時にこのカール部8が容器本体2の底壁5の下面を支持するように形成されている。
【0014】
断熱部材3の材質としては、紙、合成樹脂、またはそれらの積層体等が使用できるが、断熱性とコストを考慮すると紙を基材としたものが好ましく、通常、紙の片面または両面にポリエチレン、ポリプロピレン等のプラスチックフィルムをラミネートしたものが採用される。
【0015】
次に、容器本体2への断熱部材3の装着について説明する。容器本体2へ断熱部材3の装着は、容器本体2の下方から断熱部材3を外嵌させることによるが、上述のように屈曲部7の先端の径が側壁4の上端の径よりも若干小さいので、屈曲部7の先端は側壁4にそれらの径が同一となる箇所で接した状態となり(図2(a)参照)、さらに屈曲部7の弾力を利用して断熱部材3を押し込むと、屈曲部7がカール部6の内側面に当接し、その後、屈曲部7は容器本体2の側壁4とカール部6の隙間に押圧された状態で確実に挿嵌される(図2(b)参照)。従って、当該断熱性容器1は、側壁4とカール部6との間に挿嵌された屈曲部7の剛性と弾発力によって強度を高めることができる。また、断熱部材3は、その先端部に屈曲部7があることから、カール部6に当接して曲がったり、つぶれたりすることがない。
【0016】
図3の断熱性容器2は、上記図1の断熱性容器1とその形状及び材質がほぼ同様であるので、同一箇所は同一番号を付して説明を省略する。当該断熱性容器2は、側壁4の下方により小径のテーパー状の周階段部9が形成されている点で、断熱性容器1と異なる。従って、当該容器本体2に断熱部材3を装着すると、両者の間に空隙10が形成され、断熱性容器2の断熱性を高めることができる。
【0017】
なお、本発明の断熱性容器は上記実施形態に限定されるものではなく、例えば容器本体2と断熱部材3の固定方法として、少なくとも一方の接触面に接着剤を塗布しておくことも可能である。かかる接着剤としては、例えばエチレン酢酸ビニル共重合体、ポリアミド、ポリエステル、アタックティックポリプロピレンなどを主材に、ロジン系樹脂、石油樹脂等を配合したホットメルト樹脂が採用される。
【0018】
【発明の効果】
以上説明したように、本発明の断熱性容器によれば、断熱性、外観、耐圧強度優れ、かつ、製造を容易にすることができる。
【図面の簡単な説明】
【図1】本発明の一実施形態に係る断熱性容器を示す一部切欠正面図である。
【図2】(a)及び(b)は図1の断熱性容器の容器本体に対する断熱部材の挿嵌を説明する工程図である。
【図3】図1の断熱性容器とは異なる形態に係る断熱性容器を示す部分切欠正面図である。
【符号の説明】
1 断熱性容器
2 容器本体
3 断熱部材
4 側壁
5 底壁
6 カール部
7 屈曲部
8 カール部
9 周階段部
10 空隙
11 断熱性容器
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an insulating container for use in instant foods such as instant noodles and instant soups, or frozen foods that are thawed and cooked in a microwave oven.
[0002]
[Prior art]
Conventionally, many of the heat insulating containers for storing food such as instant noodles are made of paper, and those having a double structure in which a cylindrical heat insulating member is mounted on the outer surface of a cup-shaped container body are often used. ing. The container main body is generally formed with a curled portion continuously on the side wall by curling the upper end portion outward.
[0003]
For example, Japanese Patent Application Laid-Open No. 4-201840 and Japanese Patent Application Laid-Open No. 7-223683 are prior inventions related to the above-described heat insulating container, and the upper end portion of the heat insulating member is positioned in the vicinity of the curled portion of the container main body, or A heat insulating container positioned so as to be in contact is disclosed, and Japanese Utility Model Publication No. 6-48474 discloses a heat insulating container in which an upper end portion of a heat insulating member is inserted between a curled portion and a side wall of a container main body. .
[0004]
[Problems to be solved by the invention]
In the conventional heat insulating container, when the heat insulating member is externally fitted to the container main body from below when the heat insulating member is mounted on the container main body, the heat insulating member is made of paper, so the heat insulating member is made of the container main body. There is a problem in that it bends outward along the curled portion, collapses in contact with the lower surface of the curled portion, or causes a shift in the central axis between the heat insulating member and the container main body.
[0005]
The present invention has been made in view of these disadvantages, and it is easy and strong to attach a heat insulating member to a container body. As a result, it is possible to provide a heat insulating container excellent in heat insulating properties, strength, and manufacturability. It is the purpose.
[0006]
[Means for Solving the Problems]
The invention made to solve the above-mentioned problems is equipped with a) a cup-shaped container body and a heat insulating member mounted so as to cover the outer side wall of the container body,
b) The container body has a curl portion formed by curling an upper end portion (opening peripheral edge portion) outwardly from the side wall,
c) The heat insulating member has an upper end (upper peripheral edge) bent radially inward,
d) A heat insulating container in which an upper end portion of the heat insulating member is inserted into a gap between a side wall of the container main body and a curled portion.
[0007]
According to the heat insulating container of the present invention, since the upper end portion of the heat insulating member is bent inward in the radial direction, when the heat insulating member is mounted so as to be fitted from below the container main body, the front end portion of the heat insulating member is Since it is inserted along the outer wall of the side wall of the container body and pressed against the inside of the curl portion, the guide function when the heat insulating member is inserted into the container body and after the insertion The centering function of the heat insulating member with respect to the container body can be achieved. In addition, since the upper end of the heat insulating member is bent inward in the radial direction, the heat insulating member is prevented from bending outward along the curl portion of the container body or being crushed while in contact with the lower surface of the curl portion. it can. Further, the bent tip portion (hereinafter referred to as a bent portion) of the heat insulating member is inserted so as to come into contact with the outer surface of the side wall of the container body and the inner surface of the curled portion, so that the bent portion and the curled portion press against each other. Thus, the insertion strength can be increased. In addition, since the force acts in the direction of expanding the diameter of the curled portion of the container body by the elastic force of the bent portion, the strength of the opening of the heat insulating container can be increased. Furthermore, by making the inner diameter of the upper end of the heat insulating member (meaning the inner diameter before mounting) slightly smaller than the outer diameter of the upper end of the side wall, the bent portion can be smoothly inserted into the curled portion. Thus, the centering of the heat insulating member with respect to the container body can be more reliably performed, and the strength of the opening of the container can be further increased.
[0008]
The container body may be made of synthetic resin, and the heat insulating member may be made of paper. According to this means, it becomes easy to insert the upper end portion of the heat insulating member between the curled portion and the side wall by the elasticity of the synthetic resin and the rigidity of the paper, and the productivity can be improved. In addition, the preservability of food contained in the container can be maintained with a low-cost, synthetic resin container body with excellent barrier properties, and the rigidity of the container itself can be maintained by adjusting the thickness of the paper insulation member The weight and cost of the entire container can be reduced. Furthermore, after the container is used, the container body and the heat insulating member can be separated and disposed of, which is preferable in terms of resource recycling.
[0009]
It is good to have a space | gap between the side wall outer surface of the said container main body, and the inner surface of a heat insulation member. According to this means, the said space | gap becomes a heat insulation layer and can improve the heat insulation of the said heat insulation container.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. FIG. 1 is a partially cutaway front view showing a heat insulating container according to an embodiment of the present invention, and FIGS. 2A and 2B illustrate insertion of a heat insulating member into a container main body of the heat insulating container of FIG. FIG. 3 is a partially cutaway front view showing a heat insulating container according to a different form from the heat insulating container of FIG.
[0011]
The heat insulating container 1 in FIG. 1 includes a container main body 2 and a heat insulating member 3. The container body 2 is a cup-shaped container having a cylindrical side wall 4 and a bottom wall 5 and having an upper opening. The side wall 4 is formed in a tapered shape whose diameter increases toward the top. Further, a curled portion 6 is provided continuously to the upper end of the side wall 4 and curled at the upper end portion outward.
[0012]
Examples of the material of the container main body 1 include paper, synthetic resin, or a laminate thereof, and are not particularly limited and are appropriately determined depending on the type of food to be stored in consideration of the cooking method and storage stability. However, in consideration of cost, a synthetic resin that can maintain a minimum barrier property for food preservation is preferable.
[0013]
Similarly to the side wall 4 of the container body 2, the heat insulating member 3 is a cylindrical body formed in a tapered shape whose diameter increases toward the upper side, and is formed along the outer surface of the side wall 4 of the container body 2. A bent portion 7 that is bent at a predetermined angle inward in the radial direction is formed at the upper end portion of the heat insulating member 3. The diameter of the tip of the bent portion 7 is formed to be slightly smaller than the diameter of the upper end of the side wall 4. In addition, a curled portion 8 formed by curling inward is formed at the lower end portion of the heat insulating member 3, and this curled portion 8 is formed so as to support the lower surface of the bottom wall 5 of the container main body 2 when mounted on the container main body 2. Has been.
[0014]
As the material of the heat insulating member 3, paper, synthetic resin, or a laminate thereof can be used. However, in consideration of heat insulation and cost, a material using paper as a base material is preferable, and polyethylene is usually used on one or both sides of the paper. A laminate of a plastic film such as polypropylene is used.
[0015]
Next, attachment of the heat insulating member 3 to the container body 2 will be described. The heat insulating member 3 is attached to the container body 2 by fitting the heat insulating member 3 from below the container body 2, but the diameter of the tip of the bent portion 7 is slightly smaller than the diameter of the upper end of the side wall 4 as described above. Therefore, the tip of the bent portion 7 is in contact with the side wall 4 at a location where their diameters are the same (see FIG. 2A), and when the heat insulating member 3 is pushed in using the elasticity of the bent portion 7, The bent portion 7 comes into contact with the inner surface of the curled portion 6, and then the bent portion 7 is securely inserted in a state of being pressed by the gap between the side wall 4 of the container body 2 and the curled portion 6 (FIG. 2B). reference). Therefore, the heat insulating container 1 can be increased in strength by the rigidity and elasticity of the bent portion 7 inserted between the side wall 4 and the curled portion 6. Further, since the heat insulating member 3 has the bent portion 7 at the tip portion thereof, the heat insulating member 3 does not contact the curled portion 6 to be bent or crushed.
[0016]
The heat insulating container 2 in FIG. 3 is substantially the same in shape and material as that of the heat insulating container 1 in FIG. The heat insulating container 2 is different from the heat insulating container 1 in that a small-diameter tapered circumferential step portion 9 is formed below the side wall 4. Therefore, when the heat insulating member 3 is attached to the container main body 2, a gap 10 is formed between the two, and the heat insulating property of the heat insulating container 2 can be improved.
[0017]
The heat insulating container of the present invention is not limited to the above-described embodiment. For example, as a method for fixing the container main body 2 and the heat insulating member 3, an adhesive may be applied to at least one contact surface. is there. As such an adhesive, for example, a hot melt resin in which an ethylene vinyl acetate copolymer, polyamide, polyester, attack polypropylene, or the like is used as a main material and a rosin resin, a petroleum resin, or the like is blended is employed.
[0018]
【The invention's effect】
As described above, according to the heat insulating container of the present invention, the heat insulating property, the appearance, the pressure resistance are excellent, and the manufacturing can be facilitated.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view showing a heat insulating container according to an embodiment of the present invention.
2A and 2B are process diagrams for explaining insertion of a heat insulating member into a container body of the heat insulating container of FIG.
FIG. 3 is a partially cutaway front view showing a heat insulating container according to a different form from the heat insulating container of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Thermal insulation container 2 Container main body 3 Thermal insulation member 4 Side wall 5 Bottom wall 6 Curl part 7 Bending part 8 Curl part 9 Circumferential step part 10 Cavity 11 Thermal insulation container

Claims (4)

側壁がテーパー状に形成されたカップ状の容器本体と、
前記容器本体の側壁外面を被膜するように装着される、少なくとも前記容器本体上部と略同形状に側壁上部がテーパー状に形成された断熱部材とを装備し、
前記容器本体は側壁に連続して上端部をカーリングしてなるカール部を有し、
前記断熱部材の上端部は半径方向内側に屈曲されており、前記容器本体の下方から前記断熱部材を外嵌させる際に、前記容器本体の側壁と前記カール部との隙間に挿嵌されることにより、その半径方向外周面が前記カール部の半径方向内周面に当接して押圧されている断熱性容器。
A cup-shaped container body having a tapered side wall ;
Equipped with a heat insulating member, which is mounted so as to coat the outer surface of the side wall of the container body, at least in the same shape as the upper part of the container body, and the upper side wall of the container body is tapered .
The container body has a curled part formed by curling the upper end part continuously to the side wall,
The upper end of the heat insulating member is bent radially inwardly, when externally fitted to said insulating member from below of the container body, Ru is inserted into the gap between the side wall and the curl portion of the container body Thus, the heat insulating container whose outer circumferential surface in the radial direction is in contact with and pressed against the inner circumferential surface in the radial direction of the curled portion .
前記断熱部材の上端の内径が、前記容器本体の側壁の上端の外形よりも若干小さくされている請求項1に記載の断熱性容器。 The heat insulating container according to claim 1 , wherein an inner diameter of an upper end portion of the heat insulating member is slightly smaller than an outer shape of an upper end portion of the side wall of the container main body . 前記容器本体が合成樹脂製であり、前記断熱部材が紙製である請求項1又は2に記載の断熱性容器。The heat insulating container according to claim 1 or 2, wherein the container main body is made of synthetic resin, and the heat insulating member is made of paper. 前記カール部近傍以外の部分において、前記容器本体の側壁外面と前記断熱部材の内側面の間に空隙を有する請求項1乃至のいずれか1項に記載の断熱性容器。 In portions other than the curled portion near heat insulation container according to any one of claims 1 to 3 having an air gap between the inner surface of the heat insulating member and the side wall outer surface of the container body.
JP10662499A 1999-04-14 1999-04-14 Heat insulating container Expired - Fee Related JP4169431B2 (en)

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JP10662499A JP4169431B2 (en) 1999-04-14 1999-04-14 Heat insulating container

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JP4169431B2 true JP4169431B2 (en) 2008-10-22

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Publication number Priority date Publication date Assignee Title
JP4957262B2 (en) * 2007-01-17 2012-06-20 大日本印刷株式会社 Insulated container
JP6927871B2 (en) * 2017-12-20 2021-09-01 日清食品ホールディングス株式会社 Double container

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