JP3656408B2 - Paper insulated container - Google Patents

Paper insulated container Download PDF

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Publication number
JP3656408B2
JP3656408B2 JP15809798A JP15809798A JP3656408B2 JP 3656408 B2 JP3656408 B2 JP 3656408B2 JP 15809798 A JP15809798 A JP 15809798A JP 15809798 A JP15809798 A JP 15809798A JP 3656408 B2 JP3656408 B2 JP 3656408B2
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Japan
Prior art keywords
side plate
flange
fold line
container
valley fold
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JP15809798A
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Japanese (ja)
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JPH11348966A (en
Inventor
誠 五十嵐
淳一 本間
成志 田中
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Toppan Inc
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Toppan Inc
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Description

【０００１】
【発明の属する技術分野】
本発明は、紙製断熱容器に関し、特には、１枚のブランクを折り曲げて形成した２つの紙容器を重ねて断熱層を形成した紙製断熱容器に関する。
【０００２】
【従来の技術】
従来、即席麺などの収容物に熱湯を注いで食する紙製の断熱容器としては、例えば、耐水加工した紙カップ本体の周壁の外側に波状紙を貼着し、さらに、波状紙の上から薄紙を貼着して空気断熱層を形成させた容器、紙カップの周壁に発泡インキ等の熱可塑性樹脂の塗布膜を形成させた後、加熱等により塗布膜を発泡させて発泡層を形成させた紙容器などが知られている。
【０００３】
ところが、これらの断熱容器は紙カップを使用しており、紙カップの製造上、定形のものしか製造できず、例えば丼形をした容器などは製造できなかった。
【０００４】
【発明が解決しようとする課題】
本発明は、以上のような問題点に着目してなされたもので、形状の自由度の高い、特に丼状をした紙製断熱容器を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明は、一枚のブランクを折り曲げて形成されるフランジ付きの外容器に、別の一枚のブランクを折り曲げて形成されるフランジ付きの内容器を嵌め入れて、互いのフランジ同士を重ねて接合させて外容器と内容器の間に断熱層を形成させた紙製断熱容器であって、前記外容器は、底面板が六角形以上の偶数多角形をなし、底面板の谷折り線の各辺に、交互に外方が内方より幅広の台形状の第１下部側面板と第２下部側面板が連設され、第１下部側面板の上端には谷折り線を介して外方が内方より幅広の台形状の第１側面板が連設され、第１側面板の上端には山折り線を介して第１フランジが連設され、第２下部側面板の両端には谷折り線を介して二等辺三角形状の舌片が連設され、上端には谷折り線を介して外方が内方より幅広の台形状の第２側面板が連設され、第２側面板の上端には山折り線を介して第２フランジが連設され、第１側面板の両端には谷折り線を介して直角三角形状の第１折り曲げ片が連設され、第２側面板の両端には谷折り線を介して直角三角形状の第２折り曲げ片が連設され、第１側面板と第２側面板とは山折り線を介して連設され、第１フランジの両端は第２フランジと平行に耳片が延設され、第１側面板の内面と第１折り曲げ片の内面とは互いに接合され、舌片は第１下部側面板の内側に折り込まれ、第２フランジの両端に第１フランジの耳片が接合され、前記内容器は、底面板が六角形以上の偶数多角形をなし、底面板の谷折り線の各辺に、交互に外方が内方より幅広の台形状の第１側面板と第２側面板が連設され、第１側面板の両端には谷折り線を介して直角三角形状の第１折り曲げ片が連設され、第２側面板の両端には山折り線を介して直角三角形状の第２折り曲げ片が連設され、第１側面板と第２側面板とは谷折り線を介して連設され、第１側面板の上端には山折り線を介して第１フランジが連設され、第２側面板の上端には山折り線を介して第２フランジが連設され、第１フランジの両端は第２フランジと平行に耳片が延設され、第２側面板の外面と第２折り曲げ片の外面とは互いに接合され、第２フランジの両端に第１フランジの耳片が接合され、
外容器の第１側面板と内容器の第１側面板と、外容器の第２側面板と内容器の第２側面板とを、互いに重ねるようにして、外容器に内容器を嵌め入れ、外容器の第１フランジの内面と内容器の第１フランジの外面とを、外容器の第２フランジの内面と内容器の第２フランジの外面とをそれぞれ接合させ、外容器と内容器の間に断熱層を形成させたことを特徴とする紙製断熱容器である。
【０００６】
【作用】
上記のように本発明によれば、容器の側面は、外容器の第１、第２折り曲げ片の重なり合った部分と、内容器の第１、第２折り曲げ片の重なり合った部分とを互いにずらして内容器と外容器を重ねているので、これらの折り曲げ片が断熱層を形成して断熱効果を高めている。
また、容器の底面は、外容器の第１、第２フランジの内面と、内容器の第１、第２フランジの外面とを接合して内外容器を固定しているので、内容器底面の外側と、外容器底面の内側との間に断熱層が形成され断熱効果を高める。
【０００７】
外容器の第１、第２下部側面板の上端に谷折り線を介して第１、第２側面板が連設されているので、容器は丼状を形成する。
なお、ここで谷折り線および山折り線は、ブランクを加工する際は、単に折り曲げ線、すなわち罫線として加工され、折り曲げて容器にする際、それぞれ谷折りおよび山折りとされることを意味するものとする。
【０００８】
【発明の実施の形態】
以下実施例により本発明を詳細に説明する。
本発明の紙製断熱容器は、例えば図１（ａ）、（ｂ）に示すように、１枚のブランクを折り曲げて形成させたフランジ１５、１７付きの外容器１０に、もう１枚のブランクを折り曲げて形成させたフランジ２５、２７付きの内容器２０を嵌め入れて外容器のフランジと、内容器のフランジとを互いに接合させて外容器と内容器の間に断熱層３０を形成させたものである。
【０００９】
外容器１０は、図２に示すように底面板１１が六角形以上の偶数多角形（実施例では八角形）をしており、底面板１１の谷折り線ａの各辺に、交互に外方が内方より幅広の台形状の第１下部側面板１２と第２下部側面板１３が連設されている。
【００１０】
第１下部側面板の上端には谷折り線ａを介して外方が内方より幅広の台形状の第１側面板１４が連設され、第１側面板の上端には山折り線ｂを介して第１フランジ１５が連設されている。
【００１１】
第２下部側面板１３の両端には谷折り線ａを介して二等辺三角形状の舌片１３１が連設され、上端には谷折り線ａを介して外方が内方より幅広の台形状の第２側面板１６が連設され、第２側面板の上端には山折り線ｂを介して第２フランジ１７連設されている。
【００１２】
第１側面板１４の両端には、谷折り線ａを介して直角三角形状の第１折り曲げ片１４１が連設され、第２側面板１６の両端には、谷折り線ａを介して直角三角形状の第２折り曲げ片１６１が連設され、第１側面板と第２側面板とは山折り線ｂを介して連設されている。
【００１３】
第１フランジ１５の両端は、第２フランジ１６と平行に耳片１５１が延設されている。
【００１４】
第１側面板１４の内面と第１折り曲げ片１４１の内面とは互いに接着剤等を介して接合され、舌片１３１は第１下部側面板１２の内側に折り込まれ、第２フランジ１７の両端に第１フランジ１５の耳片１５１が接着剤等を介して接合され、外容器１０が形成されている。
【００１５】
外容器１０を形成するブランクには坪量が１８０〜５００ｇ／ｍ2 程度の白ライナー、コートボール、晒クラフト、アイボリー等の板紙が使用でき、必要に応じて表面に印刷表示層を設けても良いし、ポリエチレン樹脂等で薄膜状に耐水加工を施しても良い。
【００１６】
内容器２０は、図３に示すように底面板２１が六角形以上の偶数多角形（実施例では八角形）をしており、底面板２１の谷折り線ａの各辺に、交互に外方が内方より幅広の台形状の第１側面板２４と第２側面板２６が連設されている。
【００１７】
第１側面板２４の両端には、谷折り線ａを介して直角三角形状の第１折り曲げ片２４１が連設され、第２側面板２６の両端には、山折り線ｂを介して直角三角形状の第２折り曲げ片２６１が連設され、第１側面板と第２側面板とは谷折り線ａを介して連設されている。
【００１８】
第１側面板の上端には山折り線ｂを介して第１フランジ２５が連設され、第２側面板の上端には山折り線ｂを介して第２フランジ２７が連設され、第１フランジの両端は第２フランジと平行に耳片２５１が延設されている。
【００１９】
第２側面板２６の外面と第２折り曲げ片２６１の外面とは互いに熱接着等の手段により接合され、第２フランジ２７の両端に第１フランジ２５の耳片２５１が熱接着等の手段により接合され、内容器２０が形成されている。
【００２０】
内容器２０を形成するブランクには坪量が１９０〜３５０ｇ／ｍ2 程度のカップ原紙が好ましく使用でき、カップ原紙の内面または両面にポリエチレン樹脂等で薄膜状に耐水加工を施しておく。
【００２１】
最後に、外容器１０の第１側面板１４と内容器２０の第１側面板２４、外容器１０の第２側面板１６と内容器２０の第２側面板２６、とを互いに重ねるようにして、外容器に内容器を嵌め入れ、外容器の第１、第２の各フランジの内面と、内容器の第１、第２の各フランジの外面とをそれぞれ接着剤等を介するなどして接合させると、外容器と内容器の間に断熱層３０を形成させた本発明の紙製断熱容器１が作製できる。
【００２２】
このようにして作製した紙製断熱容器の断熱効果を評価するため、この容器に即席うどんを入れ熱湯を注いで３分間放置後、容器の側面と底面を指や掌等で握持したが、熱くて持てないということはなかった。
【００２３】
【発明の効果】
上記のように本発明の紙製断熱容器は、内容器、外容器とも１枚のブランクを組み立てて作製するため、形状の自由度が高く、例えば側面が段階的に傾斜する丼状をした容器も容易に作製できる。
外容器の折り曲げ片は容器の内側にあり、内容器の折り曲げ片は容器の外側にあるため、内外容器を組み合わせることによって折り曲げ片は一切表出しないので、外観上美しく仕上げることができる。
さらに、内外容器を組み合わせる際に折り曲げ片のある位置をずらして設けるため、組み立て後の外容器の各２重の折り曲げ片と内容器の側面板との組み合わせで４層に重なり高い断熱効果を備える。
【図面の簡単な説明】
【図１】本発明の紙製断熱容器の構造の一実施例を示す（ａ）は、縦断面説明図であり、（ｂ）は、Ａ−Ａ’線横断面部分説明図である。
【図２】本発明の紙製断熱容器を構成する外容器のブランクの一実施例を示す展開説明図である。
【図３】本発明の紙製断熱容器を構成する内容器のブランクの一実施例を示す展開説明図である。
【符号の説明】
１‥‥紙製断熱容器
１０‥‥外容器
１１、２１‥‥底面板
１２‥‥第１下部側面板
１３‥‥第２下部側面板
１４、２４‥‥第１側面板
１５、２５‥‥第１フランジ
１６、２６‥‥第２側面板
１７、２７‥‥第２フランジ
２０‥‥内容器
３０‥‥断熱層
１３１‥‥舌片
１４１、２４１‥‥第１折り曲げ片
１５１、２５１‥‥耳片
１６１、２６１‥‥第２折り曲げ片
ａ‥‥谷折り線
ｂ‥‥山折り線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper heat insulating container, and more particularly to a paper heat insulating container in which two paper containers formed by folding a single blank are stacked to form a heat insulating layer.
[0002]
[Prior art]
Conventionally, as a paper insulated container that pours hot water into a container such as instant noodles, for example, corrugated paper is attached to the outside of the peripheral wall of a water-resistant processed paper cup body, and furthermore, thin paper is applied from above the corrugated paper A paper in which an air insulation layer is formed by sticking a paper, and after forming a coating film of a thermoplastic resin such as foaming ink on the peripheral wall of a paper cup, the coating film is foamed by heating or the like to form a foam layer Containers are known.
[0003]
However, these heat-insulating containers use paper cups, and only a regular shape can be produced in the production of paper cups. For example, a bowl-shaped container cannot be produced.
[0004]
[Problems to be solved by the invention]
The present invention has been made paying attention to the above-described problems, and an object thereof is to provide a paper heat insulating container having a high degree of freedom in shape, in particular, a bowl shape.
[0005]
[Means for Solving the Problems]
In the present invention, a flanged inner container formed by folding another blank is inserted into a flanged outer container formed by folding one blank, and the flanges are overlapped with each other. A heat insulating container made of paper, in which a heat insulating layer is formed between the outer container and the inner container, wherein the outer container is an even polygon of a hexagonal shape or more on the bottom plate, A trapezoidal first lower side plate and a second lower side plate are alternately connected to each side, and the outer side is wider than the inner side, and the upper end of the first lower side plate is outwardly connected via a valley fold line. A trapezoidal first side plate having a width wider than the inside is continuously provided, a first flange is provided at the upper end of the first side plate via a mountain fold line, and valleys are provided at both ends of the second lower side plate. An isosceles triangle-shaped tongue piece is continuously connected via a fold line, and a trapezoidal shape whose outside is wider than the inside via a valley fold line A second side plate is continuously provided, a second flange is continuously provided at the upper end of the second side plate via a mountain fold line, and a right triangle-shaped second shape is provided at both ends of the first side plate via a valley fold line. One bent piece is continuously provided, and a second right-angled triangular bent piece is connected to both ends of the second side plate via a valley fold line, and the first side plate and the second side plate have a mountain fold line. And an end piece extending in parallel with the second flange at both ends of the first flange, the inner surface of the first side plate and the inner surface of the first bent piece are joined together, and the tongue piece is the first lower portion Folded inside the side plate, the ear pieces of the first flange are joined to both ends of the second flange, the inner container has an even polygon of a hexagonal shape or more on the bottom plate, and each of the valley fold lines of the bottom plate A trapezoidal first side plate and a second side plate, which are alternately wider on the outside than the inside, are connected to the sides alternately, and valley fold lines are formed at both ends of the first side plate. A right-angled triangle-shaped first bent piece is connected to the both ends of the second side plate, and a right-angled triangle-shaped second bent piece is connected to both ends of the second side plate via a mountain fold line. The face plate is connected via a valley fold line, the first flange is connected to the upper end of the first side plate via a mountain fold line, and the first side plate is connected to the upper end of the second side plate via a mountain fold line. Two flanges are provided in series, ear pieces extend in parallel to the second flange at both ends of the first flange, the outer surface of the second side plate and the outer surface of the second bent piece are joined together, and both ends of the second flange The ear piece of the first flange is joined to
The outer container first side plate, the inner container first side plate, the outer container second side plate and the inner container second side plate are overlapped with each other, and the inner container is fitted into the outer container, The inner surface of the first flange of the outer container and the outer surface of the first flange of the inner container are joined to the inner surface of the second flange of the outer container and the outer surface of the second flange of the inner container, respectively. A heat insulating container formed by forming a heat insulating layer.
[0006]
[Action]
As described above, according to the present invention, the side surface of the container shifts the overlapping portion of the first and second bent pieces of the outer container from the overlapping portion of the first and second bent pieces of the inner container. Since the inner container and the outer container are stacked, these bent pieces form a heat insulating layer to enhance the heat insulating effect.
In addition, since the bottom surface of the container joins the inner surfaces of the first and second flanges of the outer container and the outer surfaces of the first and second flanges of the inner container, the inner and outer containers are fixed. And a heat insulation layer is formed between the inner side of the bottom face of the outer container, and the heat insulation effect is enhanced.
[0007]
Since the first and second side plates are connected to the upper ends of the first and second lower side plates of the outer container via the valley fold line, the container forms a bowl shape.
Here, the valley fold line and the mountain fold line mean that when a blank is processed, it is simply processed as a fold line, that is, a ruled line, and when folded into a container, it is a valley fold and a mountain fold, respectively. Shall.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail by way of examples.
As shown in FIGS. 1A and 1B, for example, the paper heat insulating container of the present invention is provided with another blank 10 in an outer container 10 with flanges 15 and 17 formed by folding one blank. The inner container 20 with the flanges 25 and 27 formed by bending is inserted and the flange of the outer container and the flange of the inner container are joined together to form the heat insulating layer 30 between the outer container and the inner container. Is.
[0009]
As shown in FIG. 2, the outer container 10 has an even polygon (an octagon in the embodiment) whose bottom plate 11 is a hexagon or more, and is alternately placed on each side of the valley fold line a of the bottom plate 11. A trapezoidal first lower side plate 12 and second lower side plate 13 which are wider than the inner side are connected.
[0010]
A trapezoidal first side plate 14 having a wider outer side than the inner side is connected to the upper end of the first lower side plate via a valley fold line a, and a mountain fold line b is provided on the upper end of the first side plate. The 1st flange 15 is provided in series.
[0011]
An isosceles triangular tongue 131 is connected to both ends of the second lower side plate 13 via a valley fold line a, and a trapezoidal shape whose outer side is wider than the inside via a valley fold line a. The second side plate 16 is continuously provided, and the second flange 17 is continuously provided at the upper end of the second side plate via a mountain fold line b.
[0012]
Right-sided triangular first bent pieces 141 are connected to both ends of the first side plate 14 via a valley fold line a, and right-sided triangles are connected to both ends of the second side plate 16 via a valley fold line a. A second bent piece 161 having a shape is continuously provided, and the first side face plate and the second side face plate are continuously provided via a mountain fold line b.
[0013]
Ear pieces 151 are extended at both ends of the first flange 15 in parallel with the second flange 16.
[0014]
The inner surface of the first side plate 14 and the inner surface of the first bent piece 141 are joined to each other via an adhesive or the like, and the tongue piece 131 is folded inside the first lower side plate 12 and is attached to both ends of the second flange 17. The outer flange 10 is formed by joining the ear pieces 151 of the first flange 15 via an adhesive or the like.
[0015]
The blank forming the outer container 10 can use a white liner having a basis weight of about 180 to 500 g / m 2 , a paperboard such as a coated ball, bleached craft, or ivory, and a printed display layer can be provided on the surface as necessary. It may be good, or water-resistant processing may be applied in a thin film shape with polyethylene resin or the like.
[0016]
As shown in FIG. 3, the inner container 20 has an even polygonal shape (an octagon in the embodiment) in which the bottom plate 21 is a hexagon or more. A trapezoidal first side plate 24 and a second side plate 26 which are wider than the inner side are continuously provided.
[0017]
Right-sided triangular first bent pieces 241 are connected to both ends of the first side plate 24 via a valley fold line a, and right-sided triangles are connected to both ends of the second side plate 26 via a mountain fold line b. A second bent piece 261 having a shape is continuously provided, and the first side face plate and the second side face plate are continuously provided via a valley fold line a.
[0018]
A first flange 25 is connected to the upper end of the first side plate via a mountain fold line b, and a second flange 27 is connected to the upper end of the second side plate via a mountain fold line b. Ear pieces 251 extend from both ends of the flange in parallel with the second flange.
[0019]
The outer surface of the second side plate 26 and the outer surface of the second bent piece 261 are joined to each other by means such as thermal bonding, and the ear pieces 251 of the first flange 25 are joined to both ends of the second flange 27 by means such as thermal bonding. The inner container 20 is formed.
[0020]
A cup base paper having a basis weight of about 190 to 350 g / m 2 can be preferably used for the blank forming the inner container 20, and the inner surface or both sides of the cup base paper are subjected to water-resistant processing in a thin film shape with polyethylene resin or the like.
[0021]
Finally, the first side plate 14 of the outer container 10 and the first side plate 24 of the inner container 20, and the second side plate 16 of the outer container 10 and the second side plate 26 of the inner container 20 are overlapped with each other. The inner container is fitted into the outer container, and the inner surface of each of the first and second flanges of the outer container and the outer surface of each of the first and second flanges of the inner container are joined via an adhesive or the like, respectively. Then, the paper heat insulating container 1 of the present invention in which the heat insulating layer 30 is formed between the outer container and the inner container can be produced.
[0022]
In order to evaluate the heat insulation effect of the paper insulation container thus prepared, instant udon was poured into this container, poured with hot water and left for 3 minutes. There was no such thing as being too hot to hold.
[0023]
【The invention's effect】
As described above, the paper heat insulating container of the present invention is produced by assembling a single blank for both the inner container and the outer container, so that the degree of freedom of the shape is high, for example, a bowl-shaped container whose side surface is inclined stepwise Can also be easily manufactured.
Since the folded piece of the outer container is inside the container and the folded piece of the inner container is outside the container, the folded piece is not exposed at all by combining the inner and outer containers, so that the appearance can be beautifully finished.
Furthermore, when the inner and outer containers are combined, the position where the bent pieces are located is shifted, so that the combination of the double bent pieces of the outer container after assembly and the side plate of the inner container overlaps four layers and has a high heat insulating effect. .
[Brief description of the drawings]
FIG. 1A is a longitudinal cross-sectional explanatory view showing an embodiment of the structure of a paper heat insulating container of the present invention, and FIG. 1B is a cross-sectional partial explanatory view taken along line AA ′.
FIG. 2 is a development explanatory view showing one embodiment of a blank of the outer container constituting the paper heat insulating container of the present invention.
FIG. 3 is a development explanatory view showing one embodiment of a blank of the inner container constituting the paper heat insulating container of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Paper insulation container 10 ... Outer container 11, 21 ... Bottom plate 12 ... 1st lower side plate 13 ... 2nd lower side plate 14, 24 ... 1st side plate 15, 25 ... 1st 1 flange 16, 26 ... second side plate 17, 27 ... second flange 20 ... inner container 30 ... heat insulating layer 131 ... tongue pieces 141, 241 ... first bent pieces 151, 251 ... ear pieces 161, 261 ... 2nd bent piece a ... Valley fold line b ... Mountain fold line

Claims (1)

一枚のブランクを折り曲げて形成されるフランジ付きの外容器に、別の一枚のブランクを折り曲げて形成されるフランジ付きの内容器を嵌め入れて、互いのフランジ同士を重ねて接合させて外容器と内容器の間に断熱層を形成させた紙製断熱容器であって、
前記外容器は、底面板が六角形以上の偶数多角形をなし、底面板の谷折り線の各辺に、交互に外方が内方より幅広の台形状の第１下部側面板と第２下部側面板が連設され、第１下部側面板の上端には谷折り線を介して外方が内方より幅広の台形状の第１側面板が連設され、第１側面板の上端には山折り線を介して第１フランジが連設され、第２下部側面板の両端には谷折り線を介して二等辺三角形状の舌片が連設され、上端には谷折り線を介して外方が内方より幅広の台形状の第２側面板が連設され、第２側面板の上端には山折り線を介して第２フランジが連設され、第１側面板の両端には谷折り線を介して直角三角形状の第１折り曲げ片が連設され、第２側面板の両端には谷折り線を介して直角三角形状の第２折り曲げ片が連設され、第１側面板と第２側面板とは山折り線を介して連設され、第１フランジの両端は第２フランジと平行に耳片が延設され、第１側面板の内面と第１折り曲げ片の内面とは互いに接合され、舌片は第１下部側面板の内側に折り込まれ、第２フランジの両端に第１フランジの耳片が接合され、
前記内容器は、底面板が六角形以上の偶数多角形をなし、底面板の谷折り線の各辺に、交互に外方が内方より幅広の台形状の第１側面板と第２側面板が連設され、第１側面板の両端には谷折り線を介して直角三角形状の第１折り曲げ片が連設され、第２側面板の両端には山折り線を介して直角三角形状の第２折り曲げ片が連設され、第１側面板と第２側面板とは谷折り線を介して連設され、第１側面板の上端には山折り線を介して第１フランジが連設され、第２側面板の上端には山折り線を介して第２フランジが連設され、第１フランジの両端は第２フランジと平行に耳片が延設され、第２側面板の外面と第２折り曲げ片の外面とは互いに接合され、第２フランジの両端に第１フランジの耳片が接合され、
外容器の第１側面板と内容器の第１側面板と、外容器の第２側面板と内容器の第２側面板とを、互いに重ねるようにして、外容器に内容器を嵌め入れ、外容器の第１フランジの内面と内容器の第１フランジの外面とを、外容器の第２フランジの内面と内容器の第２フランジの外面とをそれぞれ接合させ、外容器と内容器の間に断熱層を形成させたことを特徴とする紙製断熱容器。A flanged outer container formed by folding another blank is inserted into a flanged outer container formed by bending one blank, and the flanges are overlapped with each other and joined together. A paper heat insulating container in which a heat insulating layer is formed between the container and the inner container,
In the outer container, the bottom plate is an even-numbered polygon having a hexagonal shape or more, and the trapezoidal first lower side plate and the second side plate that are wider outward than the inner side are alternately formed on each side of the valley fold line of the bottom plate. A lower side plate is connected to the upper end of the first lower side plate, and a trapezoidal first side plate whose outer side is wider than the inner side is connected to the upper end of the first lower side plate via a valley fold line. The first flange is continuously provided via a mountain fold line, and isosceles triangular tongues are provided continuously at both ends of the second lower side plate via a valley fold line, and the upper end via a valley fold line. A trapezoidal second side plate having a wider outer side than the inner side is continuously provided, and a second flange is provided at the upper end of the second side plate via a mountain fold line, and at both ends of the first side plate. The first bent piece having a right triangle shape is continuously provided via a valley fold line, and the second bent piece having a right triangle shape is provided continuously at both ends of the second side plate via a valley fold line. The face plate and the second side plate are connected to each other via a mountain fold line, and ear pieces extend from both ends of the first flange in parallel with the second flange, and the inner surface of the first side plate and the inner surface of the first bent piece Are joined to each other, the tongue piece is folded inside the first lower side plate, the ear pieces of the first flange are joined to both ends of the second flange,
In the inner container, the bottom plate is an even polygon having a hexagonal shape or more, and the trapezoidal first side plate and the second side that are wider outward than the inside alternately on each side of the valley fold line of the bottom plate. A face plate is continuously provided, a first bent piece having a right triangle shape is connected to both ends of the first side plate via a valley fold line, and a right triangle shape is provided to both ends of the second side plate via a mountain fold line. The second bent piece is continuously provided, the first side plate and the second side plate are connected via a valley fold line, and the first flange is connected to the upper end of the first side plate via a mountain fold line. A second flange is connected to the upper end of the second side plate via a mountain fold line, and ear pieces extend from both ends of the first flange in parallel with the second flange. And the outer surface of the second bent piece are joined to each other, the ear pieces of the first flange are joined to both ends of the second flange,
The outer container first side plate, the inner container first side plate, the outer container second side plate and the inner container second side plate are overlapped with each other, and the inner container is fitted into the outer container, The inner surface of the first flange of the outer container and the outer surface of the first flange of the inner container are joined to the inner surface of the second flange of the outer container and the outer surface of the second flange of the inner container, respectively. A paper heat insulating container, characterized in that a heat insulating layer is formed on the paper.
JP15809798A 1998-06-05 1998-06-05 Paper insulated container Expired - Fee Related JP3656408B2 (en)

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JP4621799B1 (en) 2009-05-22 2011-01-26 シャープ株式会社 Light reflecting sheet, light source device and display device
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JP4519943B1 (en) * 2009-05-22 2010-08-04 シャープ株式会社 Display device
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