JP3513644B2 - Food containers - Google Patents
Food containersInfo
- Publication number
- JP3513644B2 JP3513644B2 JP21824598A JP21824598A JP3513644B2 JP 3513644 B2 JP3513644 B2 JP 3513644B2 JP 21824598 A JP21824598 A JP 21824598A JP 21824598 A JP21824598 A JP 21824598A JP 3513644 B2 JP3513644 B2 JP 3513644B2
- Authority
- JP
- Japan
- Prior art keywords
- flange
- edge
- corner
- container
- lid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Containers Having Bodies Formed In One Piece (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、合成樹脂発泡シー
トから一体に成形された食品用容器、主に蓋体と組合せ
て使用される食品用容器に関するものである。
【０００２】
【従来の技術と発明が解決しようとする課題】従来よ
り、肉、魚、野菜等の生鮮食品、弁当、寿司、そば、煮
物その他の惣菜等の各種食品の容器として、合成樹脂製
の容器、中でも合成樹脂発泡シートから成形された容器
が多用されている。この容器の使用形態としては、食品
を収納した状態でラップフィルムにより被覆して包装す
るほか、特に弁当や寿司あるいは惣菜等の食品の種類等
によっては、透明な合成樹脂製の成形蓋を被せて包装す
ることも多くなっている。
【０００３】蓋付きの容器の場合、蓋の被嵌構造とし
て、図８に示すように、合成樹脂発泡シートから成形さ
れた容器（５１）の側壁部（５３）の上端に外方へ張り
出した断面伏凹状のフランジ状縁部（５４）を設け、一
方、透明な合成樹脂シートよりなる蓋（６０）には、前
記フランジ状縁部（５４）の上に載接する周縁部（６
１）の外周縁に、前記フランジ状縁部（５４）の外側に
嵌合する垂下縁（６２）を設けている。そして蓋（６
０）を被着状態に保持する手段として、例えば各角部に
おける垂下縁（６２）の内周に前記のフランジ状縁部
（５４）の下に係合する凸部（６３）を設けている。
【０００４】前記容器（５１）は、その使用上、フラン
ジ状縁部（５４）の角部が損傷し易く、特に前記蓋（６
０）を被せる際や取外しの際に容器（５１）のフランジ
状縁部（５４）の角部に前記凸部（６３）の係脱による
外力がかかり、角部が折れ曲ったりして剛性が低下し、
その結果、被着された蓋（６０）の前記凸部（６３）の
係合があまくなって、蓋（６０）が外れ易くなる。
【０００５】そのため、容器の開口端部の補強構造とし
て、前記フランジ状縁部の肉厚を部分的に大きくしたり
（例えば、実公昭５８−４８０７号公報）、該縁部の密
度を部分的に高くする等の方法が考えられるが、これら
いずれの場合も、合成樹脂発泡シートからの成形が容易
でなく、特にフランジ状縁部の角部付近を補強する手段
としては適さない。
【０００６】本発明は、上記に鑑みてなしたものであ
り、特に厚みや密度を変化させずに合成樹脂発泡シート
からそのまま成形できて、しかも容器の角部の耐圧強度
や保形性に優れ、特にフランジ状縁部の角部の補強を良
好になし、蓋の被着操作を繰返しても容易に角部が弱く
なることのない食品用容器を提供するものである。
【０００７】
【発明が解決しようとする課題】上記の課題を解決する
本発明の食品用容器は、合成樹脂発泡シートから一体成
形されてなり、底部に連続する側壁部の上端に外方へ張
り出した断面略伏凹状をなすフランジ状縁部を有してな
る平面略多角形の容器であって、前記側壁部が外方へ傾
斜するとともに容器の各角部において隣接する両側壁部
がアール曲面で屈曲して連続しており、該屈曲連続部分
が上端側ほど漸次大きく外方へリブ状に膨出するととも
に、その上端部において下部より傾斜度が大きくされて
該上端が前記フランジ状縁部に連続せしめられ、各角部
におけるフランジ状縁部の内縁が角部外縁に向って凹設
せしめられて、該凹設部分が角部外縁に向って略先細状
をなしていることを特徴とする。
【０００８】この食品用容器によれば、各角部における
前記リブ状膨出部の補強作用によって、両側壁部間の屈
曲連続部分の耐圧強度や保形性が高められる上、断面略
伏凹状のフランジ状縁部の内縁が角部外縁に向って凹設
されていることにより、前記フランジ状縁部の幅が狭く
なって、前記リブ状膨出部のリブ作用が該フランジ状縁
部の角部外縁近くまで及び、そのためフランジ状縁部の
角部の剛性が高められて折れ曲がりや変形が生じ難くな
り、充分な保形強度を発揮する。
【０００９】特に、本発明の場合、側壁部が外方へ傾斜
するとともに各角部において隣接する両側壁部がアール
曲面で屈曲して連続しており、該屈曲連続部分のリブ状
膨出部が上端側ほど大きく外方へ膨出せしめられている
ため、各角部における耐圧強度およびフランジ状縁部の
保形強度がさらに高められる。
【００１０】その上、前記屈曲連続部分のリブ状膨出部
が、上端部において下部よりも傾斜度を大きくして外方
へ膨出せしめられるとともに、前記角部におけるフラン
ジ状縁部の内縁の凹設部分が角部外縁に向って略先細状
になっている。このため、フランジ状縁部の角部の補強
が効果的になされてこの部分の剛性がさらに高くなり、
曲げ等に対する強度が強くなる。
【００１１】
【発明の実施の形態】次に本発明の実施形態を図面に示
す実施例に基いて説明する。
【００１２】図１は本発明にかかる容器の斜視図、図２
は同容器の平面図、図３は同容器の半部を断面した正面
図、図４は一部の拡大斜視図、図５は前図Ｘ−Ｘ線の断
面図である。
【００１３】実施例の容器（１）は、例えばポリスチレ
ン系樹脂等の合成樹脂を押出し発泡成形した発泡シート
から、プレス成形や真空成形等の成形手段により平面略
四角形に一体成形されてなる。この容器（１）は、底部
（２）の四周に連続して上方に向ってやや外方へ傾斜し
て延びる側壁部（３）を有するとともに、開口部となる
側壁部（３）の上端に外方へ張り出したフランジ状縁部
（４）を有し、全体として比較的浅底のトレー形状をな
しており、後述のように透明な合成樹脂製の蓋（１０）
が被着されるようになっている。
【００１４】また、この容器（１）は、図のように四隅
の各角部において隣接する両側壁部（３）（３）がアー
ル曲面で屈曲して連続しており、これに対応してフラン
シ状縁部（４）の角部外縁もアール形状をなしている。
また、前記フランシ状縁部（４）は、容器開口部の保形
性をよくするために、図のように断面略伏凹状に形成さ
れている。
【００１５】そして、各角部において隣接する前記両側
壁部（３）（３）間の屈曲連続部分（５）が図のように
外方へ上下方向のリブ状に膨出して、該リブ状膨出部
（５ａ）の上端が前記フランジ状縁部（４）の内縁に連
続せしめられており、これにより、各角部におけるフラ
ンジ状縁部（４）の内縁が角部外縁に向って開口部を拡
げるように凹設されて、前記フランジ状縁部（４）の角
部付近の幅が他の部分より狭くなっている。（６）は前
記内縁の凹設部分を示し、（４ａ）はフランジ状縁部
（４）の角部を示す。
【００１６】前記リブ状膨出部（５ａ）は、底部（２）
付近から上端までほぼ同じ膨出度合とすることもできる
が、図のように上端側ほど漸次大きく外方へ膨出させて
おくのが、フランジ状縁部（４）の補強効果の点から好
ましい。
【００１７】さらに、図示する実施例のように、前記リ
ブ状膨出部（５ａ）の上端部（５ｂ）を、下部よりも傾
斜度を大きくして外方へ膨出せしめるとともに、フラン
ジ状縁部（４）の内縁の凹設部分（６）を、角部外縁に
向って略先細状をなし、その先端が比較的アールの小さ
い屈曲形状をなすように形成しておくのが好ましい。す
なわち、このように形成されていると、前記凹設部分
（６）によるフランジ状縁部（４）の角部（４ａ）の剛
性補強が効果的になされ、曲げ等に対する強度がさらに
強くなる。
【００１８】特に、前記フランジ状縁部（４）が断面略
伏凹状をなしていると、この伏凹状と前記凹設部分
（６）の先細形状との相乗効果で、この部分の剛性や強
度がさらに高くなる。
【００１９】なお、図示する実施例の場合、前記容器
（１）の底部（２）の四隅部が下面側への凸状をなすよ
うに凹設されている。（７）はその凹設による下面側の
凸部を示す。
【００２０】前記容器（１）の構成素材としては、ポリ
スチレンおよびスチレンを主体とする共重合体等のポリ
スチレン系樹脂の発泡シートのほか、ポリプロピレン等
のポリオレフィン系樹脂、ポリエステル樹脂その他の比
較的硬質の合成樹脂で発泡シートとして適度に腰のある
合成樹脂発泡シートが好適に用いられる。この発泡シー
トに非発泡もしくは高密度の樹脂表皮層を設けた発泡シ
ートを用いることもできる。この発泡シートの厚みは１
〜５ｍｍのものが特に好適に用いられる。
【００２１】また、前記の容器（１）に被着される蓋
（１０）は、ポリプロピレン樹脂やポリエステル樹脂等
の透明な非発泡の合成樹脂シートから、プレス成形や真
空成形等の成形手段により形成されている。この蓋（１
０）には、前記フランジ状縁部（４）の上に載接する周
縁部（１１）の外周縁に、前記フランジ状縁部（４）の
外側に嵌合する垂下縁（１２）が設けられるとともに、
四隅部における前記垂下縁（１２）の内周に凸部（１
３）が設けられており、該凸部（１３）が前記のフラン
ジ状縁部（４）の下に係合することにより、図６および
図７のように被着状態に保持されるようになっている。
【００２２】なお、図示する実施例の蓋（１０）は、前
記周縁部（１１）の内方部（１４）が上方への膨出形状
をなすとともに、その上面部（１４ａ）の四隅部に、前
記容器（１）の底部（２）における下面側への凸部
（７）が嵌合する凹欠段部（１５）が形成されており、
蓋着状態で安定性よく積み重ねることができるようにな
っている。（１６）は前記内方部（１４）の四隅部に凹
入形成した縦リブであり、前記の積み重ね時の耐圧性を
よくしている。前記の蓋（１０）の形状は、図示する実
施例のものに限定されるものではない。
【００２３】上記した実施例の容器（１）は、内部に各
種の食品を収納した状態で主に前記のように蓋（１０）
を被着して使用する（図６および図７）。この際、容器
（１）の各角部において、隣接する両側壁部（３）
（３）間の屈曲連続部分（５）に設けられたリブ状膨出
部（５ａ）の補強作用で該屈曲連続部分（５）の耐圧強
度や保形性が高められる。
【００２４】その上、各角部におけるフランジ状縁部
（４）の内縁がその角部外縁に向って凹設されて、前記
フランジ状縁部（４）の幅が狭くなっており、前記リブ
状膨出部（５ａ）のリブ作用が該フランジ状縁部（４）
の角部外縁近くまで及ぶため、厚みや密度を高くしなく
ても、フランシ状縁部（４）の角部（４ａ）の剛性や強
度が高められることになり、蓋（１０）を被着する際あ
るいは取り外す際に、容器（１）の各角部におけるフラ
ンジ状縁部（４）に前記凸部（１３）の係脱による外力
がかかっても、フランシ状縁部（４）の角部（４ａ）が
容易に折れ曲がったり変形することがない。それゆえ、
蓋（１０）の被着操作を繰返しても、フランジ状縁部
（４）の角部（４ａ）が弱くならず、蓋（１０）がはず
れ易くなるという問題が生じない。また前記の四隅部の
補強効果により、容器をラップフィルムで被覆して包装
した場合の保形性も良好なものになる。
【００２５】なお図示する実施例の場合、平面四角形の
トレー形状の容器の場合を示しているが、他の多角形
（例えば六角形等）の容器においても、各角部におい
て、隣接する側壁部間の屈曲連続部分およびフランジ状
縁部を上記同様に形成して実施することができる。
【００２６】
【発明の効果】上記したように本発明によれば、合成樹
脂発泡シートから成形された食品用容器で、主に蓋を被
せて使用するタイプのものにおいて、厚みや密度を変化
させずに、容器角部の耐圧強度や保形性を高め、特に蓋
が係合するフランジ状縁部の角部の強度を高めことがで
きる。そのため、蓋の被着操作を繰返したりしても、容
器角部が容易に折れ曲ったり変形して弱くなることがな
く、蓋の被着状態を良好に保持できる。
【００２７】しかも、厚みや密度を変化させずに合成樹
脂発泡シートからそのまま成形できるので、容易に製作
できる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food container integrally molded from a synthetic resin foam sheet, and mainly to a food container used in combination with a lid. It is. 2. Description of the Related Art Conventionally, containers made of synthetic resin have been used as containers for various foods such as fresh foods such as meat, fish and vegetables, bento, sushi, buckwheat, boiled dishes and other prepared foods. Containers, especially containers molded from synthetic resin foam sheets, are frequently used. As a use form of this container, in addition to covering and packaging with a wrap film in a state in which food is stored, in particular, depending on the type of food such as a lunch box or sushi or prepared food, a transparent synthetic resin molded lid is covered. Packaging is increasing. [0003] In the case of a container with a lid, as shown in FIG. 8, as a structure to be fitted to the lid, the container protrudes outward from the upper end of a side wall (53) of a container (51) molded from a synthetic resin foam sheet. A flange-shaped edge (54) having a concave cross section is provided, while a lid (60) made of a transparent synthetic resin sheet has a peripheral edge (6) placed on the flange-shaped edge (54).
A hanging edge (62) fitted outside the flange-shaped edge (54) is provided on the outer peripheral edge of 1). And the lid (6
As means for holding 0) in an attached state, for example, a convex portion (63) engaging below the flange-shaped edge (54) is provided on the inner periphery of the hanging edge (62) at each corner. . The container (51) is liable to be damaged at the corner of the flange-shaped edge (54) due to its use.
0) At the time of putting or removing the container, an external force is applied to the corner of the flange-shaped edge (54) of the container (51) due to the engagement and disengagement of the projection (63), and the corner is bent and rigidity is reduced. Drop,
As a result, the engagement of the convex portion (63) of the attached lid (60) is increased, and the lid (60) is easily detached. [0005] Therefore, as a reinforcing structure at the open end of the container, the thickness of the flange-like edge is partially increased (for example, Japanese Utility Model Publication No. 58-4807) or the density of the edge is partially reduced. In any of these cases, molding from a synthetic resin foam sheet is not easy, and is not particularly suitable as a means for reinforcing the vicinity of the corners of the flange-shaped edge. The present invention has been made in view of the above, and can be formed from a synthetic resin foam sheet without any change in thickness and density, and has excellent pressure-resistant strength and shape retention at the corners of the container. In particular, it is an object of the present invention to provide a food container in which corner portions of a flange-like edge portion are satisfactorily reinforced, and the corner portions are not easily weakened even if a cover attaching operation is repeated. [0007] The food container of the present invention which solves the above-mentioned problems is formed integrally from a synthetic resin foam sheet, and projects outward at the upper end of the side wall portion continuous with the bottom portion. A substantially polygonal container having a flange-shaped edge portion having a substantially concave- convex cross section , wherein the side wall portion is inclined outward.
Beveled and adjacent side walls at each corner of the container
There is continuous and bent to an ares curved, the bent continuous portion
Gradually bulges outward in a rib-like manner toward the upper end.
In addition, the slope is made larger at the upper end than at the bottom
The upper end is continuous with the flange-shaped edge, and the inner edge of the flange-shaped edge at each corner is recessed toward the outer edge of the corner.
And the recessed portion is substantially tapered toward the outer edge of the corner.
Characterized in that it forms a. [0008] According to this food container, the reinforcing action of the rib-shaped bulging portion at each corner increases the pressure resistance and shape retention of the continuous bending portion between both side walls, and has a substantially cross-sectional shape.
Since the inner edge of the recessed flange-shaped edge is recessed toward the outer edge of the corner, the width of the flange-shaped edge is reduced, and the rib action of the rib-shaped bulging portion is reduced by the flange-shaped edge. As a result, the rigidity of the corners of the flange-like edge is increased, so that bending and deformation are less likely to occur, and sufficient shape-retaining strength is exhibited. In particular, in the case of the present invention, the side wall portion is inclined outward and the adjacent side wall portions at each corner are bent and continuous with a curved surface, and the rib-like bulging portion of the bent continuous portion is provided. It is but are allowed to bulge to about the upper end side large outward
Therefore, the pressure resistance strength at each corner and the shape retention strength of the flange-shaped edge are further enhanced. [0010] In addition, the rib-like bulging portion of the bent continuous portion is bulged outward at an upper end with a larger inclination than that of the lower portion, and the inner edge of the flange-like rim at the corner is formed. that has become tapering substantially recessed portion toward the corner edge. For this reason, the corners of the flange-shaped edge are effectively reinforced, and the rigidity of this portion is further increased,
Strength against bending and the like increases. Next, an embodiment of the present invention will be described with reference to an embodiment shown in the drawings. FIG. 1 is a perspective view of a container according to the present invention, and FIG.
Is a plan view of the container, FIG. 3 is a front view of a half section of the container, FIG. 4 is an enlarged perspective view of a part thereof, and FIG. 5 is a sectional view taken along line XX of the previous figure. The container (1) of the embodiment is formed by extruding a synthetic resin such as a polystyrene resin or the like into a foamed sheet, and integrally molding the foamed sheet into a substantially square planar shape by molding means such as press molding or vacuum molding. This container (1) has a side wall (3) extending upward and inclined slightly outward continuously on four rounds of the bottom (2), and at the upper end of the side wall (3) serving as an opening. A lid (10) made of a transparent synthetic resin having a flange-like edge (4) projecting outward and having a relatively shallow tray shape as a whole, as will be described later.
Is to be adhered. In this container (1), the side walls (3) and (3) adjacent to each other at the four corners are bent at an R-shaped curved surface as shown in FIG. The outer edges of the corners of the french edge (4) are also rounded.
Further, the french-shaped edge (4) is formed in a substantially concave shape in cross section as shown in the figure in order to improve the shape retention of the container opening. The bent continuous portion (5) between the adjacent side walls (3) (3) at each corner bulges outwardly in a vertical rib shape as shown in FIG. The upper end of the bulging portion (5a) is continuous with the inner edge of the flange-shaped edge (4), whereby the inner edge of the flange-shaped edge (4) at each corner is open toward the outer edge of the corner. The flange-shaped edge portion (4) is narrower in width than the other portions, being recessed so as to expand the portion. (6) shows a concave portion of the inner edge, and (4a) shows a corner of the flange-like edge (4). The rib-shaped bulging portion (5a) has a bottom portion (2).
Although the degree of swelling may be substantially the same from the vicinity to the upper end, it is preferable that the swelling is gradually increased outward toward the upper end as shown in the figure from the viewpoint of the reinforcing effect of the flange-shaped edge (4). . Further, as in the illustrated embodiment, the upper end portion (5b) of the rib-like bulging portion (5a) is bulged outward with a larger inclination than the lower portion, and the flange-like rim is formed. It is preferable that the recessed portion (6) of the inner edge of the portion (4) is formed so as to have a substantially tapered shape toward the outer edge of the corner portion and to have a bent end with a relatively small radius. That is, when formed as described above, the rigidity of the corner portion (4a) of the flange-shaped edge portion (4) is effectively strengthened by the concave portion (6), and the strength against bending or the like is further increased. In particular, when the flange-shaped edge (4) has a substantially concave cross section, the synergistic effect of the concave and the tapered shape of the concave portion (6) causes the rigidity and strength of this portion. Will be even higher. In the case of the illustrated embodiment, the four corners of the bottom (2) of the container (1) are recessed so as to protrude downward. (7) shows a convex portion on the lower surface side due to the recess. The container (1) may be made of a foamed sheet of a polystyrene resin such as a copolymer mainly composed of polystyrene and styrene, a polyolefin resin such as polypropylene, a polyester resin and other relatively hard materials. A moderately stiff synthetic resin foam sheet is preferably used as the synthetic resin foam sheet. A foamed sheet having a non-foamed or high-density resin skin layer provided on the foamed sheet can also be used. The thickness of this foam sheet is 1
の も の 5 mm is particularly preferably used. The lid (10) attached to the container (1) is formed from a transparent non-foamed synthetic resin sheet such as a polypropylene resin or a polyester resin by molding means such as press molding or vacuum molding. Have been. This lid (1
0), a hanging edge (12) fitted outside the flange-shaped edge (4) is provided on the outer periphery of the peripheral edge (11) placed on the flange-shaped edge (4). With
Projections (1) are formed on the inner periphery of the hanging edge (12) at the four corners.
3) is provided, and the projection (13) is engaged under the flange-shaped edge (4) so as to be held in the attached state as shown in FIGS. 6 and 7. Has become. The lid (10) of the illustrated embodiment has an inner portion (14) of the peripheral portion (11) having an upwardly bulging shape and four corners of its upper surface (14a). A recessed step (15) into which a projection (7) on the lower surface side of the bottom (2) of the container (1) is fitted;
It can be stacked with good stability in the state of the lid. (16) are vertical ribs recessed at the four corners of the inner portion (14) to improve the pressure resistance during the stacking. The shape of the lid (10) is not limited to that of the illustrated embodiment. The container (1) according to the above-described embodiment mainly has the lid (10) as described above with various foods stored therein.
(FIGS. 6 and 7). At this time, at each corner of the container (1), adjacent side walls (3)
By the reinforcing action of the rib-shaped bulging portion (5a) provided in the bent continuous portion (5) between (3), the pressure resistance and shape retention of the bent continuous portion (5) are enhanced. In addition, the inner edge of the flange-shaped edge (4) at each corner is recessed toward the outer edge of the corner, and the width of the flange-shaped edge (4) is reduced, and The rib action of the protruding portion (5a) is applied to the flange-shaped edge (4).
The rigidity and strength of the corner (4a) of the french-shaped edge (4) can be increased without increasing the thickness and density, so that the cover (10) can be attached without increasing the thickness or density. When an external force due to the engagement and disengagement of the projection (13) is applied to the flange-shaped edge (4) at each corner of the container (1) during the removal or the removal, the corner of the flange-shaped edge (4) (4a) is not easily bent or deformed. therefore,
Even if the operation of attaching the lid (10) is repeated, the corner (4a) of the flange-shaped edge (4) does not become weak, and the problem that the lid (10) is easily detached does not occur. In addition, due to the reinforcing effect of the four corners, the shape retention when the container is covered with a wrap film and packaged is also good. In the embodiment shown in the drawings, the case of a tray-shaped container having a flat rectangular shape is shown. However, in other polygonal containers (for example, hexagonal shape), adjacent side wall portions are formed at each corner. The bent continuous portion and the flange-like edge portion can be formed and implemented in the same manner as described above. As described above, according to the present invention, the thickness and density of a food container molded from a synthetic resin foam sheet, which is mainly used while being covered with a lid, are changed. Instead, it is possible to increase the pressure resistance and shape retention of the container corners, and in particular, to increase the strength of the corners of the flange-like edge with which the lid engages. Therefore, even if the operation of attaching the lid is repeated, the corner portion of the container is not easily bent or deformed and becomes weak, so that the attached state of the lid can be favorably maintained. In addition, since it can be molded from a synthetic resin foam sheet without changing its thickness or density, it can be easily manufactured.
【図面の簡単な説明】
【図１】本発明にかかる容器の斜視図である。
【図２】同上の容器の平面図である。
【図３】同上容器の半部を断面した正面図である。
【図４】同上の容器の一部の拡大斜視図である。
【図５】前図のＸ−Ｘ線の拡大断面図である。
【図６】蓋を被着した使用状態の斜視図である。
【図７】同上の一部の拡大断面図である。
【図８】従来の容器の容器本体と蓋との係合による被着
状態を示す一部の略示断面図である。
【符号の説明】
（１） 容器
（２） 底部
（３） 側壁部
（４） フランシ状縁部
（４ａ） フランジ縁部の角部
（５） 屈曲連続部分
（５ａ） リブ状膨出部
（６） フランジ状縁部の内縁の凹設部分
（１０） 蓋
（１１） 周縁部
（１２） 垂下部
（１３） 凸部BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a container according to the present invention. FIG. 2 is a plan view of the container. FIG. 3 is a front view showing a cross section of a half of the container. FIG. 4 is an enlarged perspective view of a part of the container. FIG. 5 is an enlarged cross-sectional view taken along line XX of the previous figure. FIG. 6 is a perspective view of a use state with a lid attached. FIG. 7 is an enlarged sectional view of a part of the above. FIG. 8 is a schematic cross-sectional view of a part of a conventional container in an attached state by engagement between a container body and a lid. [Description of Signs] (1) Container (2) Bottom part (3) Side wall part (4) Franch-like edge part (4a) Corner part of flange edge part (5) Bending continuous part (5a) Rib-like bulging part (6) Concave portion of inner edge of flange-shaped edge (10) Lid (11) Peripheral edge (12) Hanging part (13) Convex
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平８−34424（ＪＰ，Ａ) 特開 昭52−35260（ＪＰ，Ａ) 実開 平６−10109（ＪＰ，Ｕ) 実開 平５−77017（ＪＰ，Ｕ) 実開 昭62−78609（ＪＰ，Ｕ) 実開 昭58−159208（ＪＰ，Ｕ) 実開 昭63−105638（ＪＰ，Ｕ) 実公 昭58−4807（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) B65D 1/26 B65D 1/34 B65D 1/46 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-8-34424 (JP, A) JP-A-52-35260 (JP, A) JP-A-6-10109 (JP, U) JP-A-5-35109 77017 (JP, U) Japanese Utility Model Showa 62-78609 (JP, U) Japanese Utility Model Showa 58-159208 (JP, U) Japanese Utility Model Showa 63-105638 (JP, U) Japanese Utility Model Utility Model 58-4807 (JP, Y1) (58) Field surveyed (Int.Cl. 7 , DB name) B65D 1/26 B65D 1/34 B65D 1/46
Claims (1)
り、底部に連続する側壁部の上端に外方へ張り出した断
面略伏凹状をなすフランジ状縁部を有してなる平面略多
角形の容器であって、前記側壁部が外方へ傾斜するとともに 容器の各角部にお
いて隣接する両側壁部がアール曲面で屈曲して連続して
おり、該屈曲連続部分が上端側ほど漸次大きく外方へリ
ブ状に膨出するとともに、その上端部において下部より
傾斜度が大きくされて該上端が前記フランジ状縁部に連
続せしめられ、各角部におけるフランジ状縁部の内縁が
角部外縁に向って凹設せしめられて、該凹設部分が角部
外縁に向って略先細状をなしていることを特徴とする食
品用容器。(57) Patent Claims: 1. A are integrally molded from a synthetic resin foam sheet, projecting outward on the upper end of the side wall portion continuous to the bottom portion sectional
A flat, substantially polygonal container having a flange-like edge portion having a substantially concave-convex surface , wherein said side wall portion is inclined outward and both side walls adjacent at each corner of the container are rounded surfaces. Bend continuously
Cage, Li said bent continuous portion to gradually increase outwardly as the upper end side
And bulges in the shape of
It is larger degree of inclination upper end and is made to continuously to the flange-like rim portion, is allowed recessed inner edge of the flange-like rim portion in each corner portion toward the <br/> corner edge, recess provided portion Is a corner
A food container having a substantially tapered shape toward an outer edge .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21824598A JP3513644B2 (en) | 1998-07-31 | 1998-07-31 | Food containers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21824598A JP3513644B2 (en) | 1998-07-31 | 1998-07-31 | Food containers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000043840A JP2000043840A (en) | 2000-02-15 |
| JP3513644B2 true JP3513644B2 (en) | 2004-03-31 |
Family
ID=16716874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21824598A Expired - Fee Related JP3513644B2 (en) | 1998-07-31 | 1998-07-31 | Food containers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3513644B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005239286A (en) * | 2004-02-24 | 2005-09-08 | ▲寧▼波南洋酒店用品制造有限公司 | Container |
| JP2015083482A (en) * | 2013-10-25 | 2015-04-30 | リスパック株式会社 | Dish-shaped container |
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|---|---|---|---|---|
| CA2682809C (en) | 2002-03-15 | 2013-09-10 | Graphic Packaging International, Inc. | Container having a rim or other feature encapsulated by or formed from injection-molded material |
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| ES2388716T3 (en) | 2002-10-08 | 2012-10-17 | Graphic Packaging International, Inc. | Method and tool for the formation of a container having a flange or other encapsulated conformation, or formed of an injection molded material. |
| CA2501249C (en) | 2002-10-08 | 2011-02-01 | Graphic Packaging International, Inc. | Container having a rim or other feature encapsulated by or formed from injection-molded material |
| JP4995892B2 (en) | 2006-03-10 | 2012-08-08 | グラフィック パッケージング インターナショナル インコーポレイテッド | Injection molding composite composition |
| WO2008049048A2 (en) | 2006-10-18 | 2008-04-24 | Graphic Packaging International, Inc. | Tool for forming a three dimensional article or container |
| EP2231482B1 (en) | 2007-12-28 | 2013-02-20 | Graphic Packaging International, Inc. | Tool and method for forming an injection-molded composite construct |
| US7975871B2 (en) | 2008-04-04 | 2011-07-12 | Graphic Packaging International, Inc. | Container with injection-molded feature and tool for forming container |
| JP5490233B2 (en) | 2009-06-17 | 2014-05-14 | グラフィック パッケージング インターナショナル インコーポレイテッド | Tool to form a three-dimensional container or structure |
| US8777010B2 (en) | 2009-08-26 | 2014-07-15 | Graphic Packaging International, Inc. | Container blank and container with denesting feature |
| EP2477900B1 (en) | 2009-09-14 | 2015-08-12 | Graphic Packaging International, Inc. | Blank and forming tool for forming a container |
| JP5789447B2 (en) * | 2011-08-17 | 2015-10-07 | 株式会社積水技研 | Packaging container lid |
| BR112015007977B1 (en) | 2012-10-17 | 2021-08-03 | Graphic Packaging International, Llc | CONTAINER FOR PACKAGING AN ITEM, BLANKET FOR FORMING A CONTAINER FOR PACKAGING AN ITEM, AND METHOD FOR FORMING A CONTAINER |
| TWM467350U (en) * | 2013-02-06 | 2013-12-11 | Hui-Hu Liang | Waterproof sealed electronic product protection device |
| TW201433016A (en) | 2013-02-06 | 2014-08-16 | Hui-Hu Liang | Waterproof hermetically-sealed electronic product protection device |
| US20160251117A1 (en) | 2015-02-27 | 2016-09-01 | Graphic Packaging International, Inc. | Container with Coating |
| JP6502448B2 (en) * | 2017-09-26 | 2019-04-17 | リスパック株式会社 | Dish container |
-
1998
- 1998-07-31 JP JP21824598A patent/JP3513644B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005239286A (en) * | 2004-02-24 | 2005-09-08 | ▲寧▼波南洋酒店用品制造有限公司 | Container |
| JP2015083482A (en) * | 2013-10-25 | 2015-04-30 | リスパック株式会社 | Dish-shaped container |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000043840A (en) | 2000-02-15 |
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