JP4259707B2 - Heat insulating container - Google Patents

Heat insulating container Download PDF

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Publication number
JP4259707B2
JP4259707B2 JP36673199A JP36673199A JP4259707B2 JP 4259707 B2 JP4259707 B2 JP 4259707B2 JP 36673199 A JP36673199 A JP 36673199A JP 36673199 A JP36673199 A JP 36673199A JP 4259707 B2 JP4259707 B2 JP 4259707B2
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Japan
Prior art keywords
outer cylinder
paper cup
insulating container
taper
heat insulating
Prior art date
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JP36673199A
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Japanese (ja)
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JP2001180647A (en
Inventor
憲一 遠藤
秀貴 清水
勝弘 山縣
和弘 日高
幸博 鹿谷
恵一 関根
恭博 櫛田
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Priority to JP36673199A priority Critical patent/JP4259707B2/en
Publication of JP2001180647A publication Critical patent/JP2001180647A/en
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Description

【0001】
【発明の属する技術分野】
本発明は、インスタントラーメンなどの即席食品を入れるカップ状の容器に係り、特に熱湯を注いでそのまま食することのできる断熱性に優れた容器に関するものである。
【0002】
【従来の技術】
一般に、この種のカップ状をした断熱性容器としては、発泡ポリスチレンなどのプラスチック製のものが多用されてきたが、これらは廃棄した場合に公害問題になることから、これに代わるものとして、例えば実開平4−45212号公報に見られるように、胴部を二重にして断熱用の空隙を形成した紙製の断熱性容器が提案されている。
【0003】
【発明が解決しようとする課題】
従来の技術で述べた実開平4−45212号公報に記載の断熱性容器は、通常の紙カップに対してテーパーの異なった底なしの外筒を組み合わせるという簡単な構成により断熱効果を有するカップが得られるという利点がある。そして、断熱用の空隙が下方に行くほど大きくなっているので、通常の持ち方では良好な断熱効果を発揮する。しかしながら、上部寄りのところをつかんで持つ状態が長く続くと、断熱効果を発揮する空隙が無いか又は狭いので、段々と熱くなってくるという問題点がある。
【0004】
本発明は、上記のような問題点を解決するためになされたものであり、その目的とするところは、胴部のいずれの場所を手で持っても内容物の熱が伝わり難い優れた断熱性容器を提供することにある。
【0005】
【課題を解決するための手段】
上記目的を達成するために、本発明に係る断熱性容器は、上方開口縁に外向きカール部を有する上拡がりの紙カップ本体と、上方及び下方共に開口しており下方開口縁に内向きカール部を有する上拡がりの紙製の外筒とからなり、紙カップ本体の胴部の途中には該胴部の上拡がりのテーパーより小さな角度の上拡がりのテーパー又は鉛直方向のテーパーを付けて段部を形成することによって外側に突き出た拡大部分が周回方向に設けられており、外筒における内向きカール部にはその内側となるところの一部を除いて表面にOPニスが印刷されており、紙カップ本体に外筒を被せて外筒上端部分を紙カップ本体における外向きカール部の内側に食い込ませた状態とするとともに、外筒における内向きカール部の部分を紙カップ本体の下方の側壁外周面エマルジョン系接着剤で接着して両者を一体とすることにより形成され、紙カップ本体と外筒の間に空隙が形成されていることを特徴とするものである。
【0006】
【発明の実施の形態】
次に、いくつかの例を挙げながら本発明の実施形態について説明する。
【0007】
図1は本発明に係る断熱性容器の一例を示すもので、左半分及び右半分をそれぞれ正面図と断面図で示す概略構成図であり、同図の断熱性容器Cは、紙カップ本体10と上方及び下方共に開口した中空円筒状の外筒20とを組み合わせて構成されている。
【0008】
紙カップ本体10は、内面若しくは内外両面にポリエチレン等の合成樹脂をコーティングした紙からなるもので、通常の紙カップと同様に、扇形状のブランクを丸めた胴部11の下方に円形状の底板12を巻き締めると共に上方開口縁に外向きカール部13を形成したものであり、さらに胴部11の中央付近には胴部11のテーパーとは異なるテーパーにより外側に突き出た拡大部分14を設けてある。すなわち、胴部11の上拡がりのテーパーより小さな角度の上拡がりのテーパー又は鉛直方向のテーパーを付けることで段部aを形成している。また、紙カップ本体10の胴部11のやや下寄りの位置には、外側に突出する周回方向の凸状部からなる補強リブ15を形成してある。なお、これらの拡大部分14や補強リブ15は、紙カップ本体10と外筒20とを組み合わせる前に、雄型と雌型を用いて紙カップ本体10に形成されるものである。ここで、紙カップ本体10の拡大部分14は、紙カップ本体10の中に拡開式の雄型を挿入し、その雄型を外側の雌型に向けて押し広げることで形成することになるが、この場合に胴部11のテーパーとは異なる上拡がりのテーパー又は鉛直方向のテーパーを付けることにより、引っ掛かることなく簡単に型抜きが行える。
【0009】
一方、中空円筒状の外筒20は、紙単体若しくは片面又は両面にポリエチレン等の合成樹脂をコーティングした扇形状の紙からできており、胴部21の下方開口縁に内向きカール部22が形成されている。ここで、紙カップ本体10も外筒20も共に上拡がりであるが、この外筒20はその胴部21が紙カップ本体10の胴部11より裾が少し拡がったテーパーを有しており、さらに図示の例では外筒20の上端部分23が全周に渡って内側に閉じる方向にテーパー状に曲げられており、その先端が紙カップ本体10の外向きカール部13の内側に当接する大きさになっている。なお、この上端部分23の曲げは、テーパー状に限るものではなく、湾曲状態に曲げられていてもよい。
【0010】
そして、紙カップ本体10に上記構成の外筒20を被せて差し込み、外筒20の上端部分23の先端を紙カップ本体10における外向きカール部13の内側に当接させるか食い込ませた状態にし、予め紙カップ本体10の外向きカール部13の下側付近の胴部外周面に塗布したエマルジョン系接着剤等の手段により、外筒20の上端部分23を紙カップ本体10における外向きカール部13の内側に接着して両者を一体化とすることにより、図1に示す断熱性容器Cが形成されている。使用形態によっては、外筒20の下方開口縁に形成された内向きカール部22の部分も紙カップ本体10の下方の側壁外周面に接着して、紙カップ本体10と外筒20の結合をより確実にしてもよい。また、外筒20の上端部分23の先端を紙カップ本体10における外向きカール部13の内側に十分に食い込ませるような場合は、外筒20における内向きカール部22の部分を紙カップ本体10の下方の側壁外周面に接着するだけでも固定することができる。
【0011】
上記構成の断熱性容器Cにおいては、紙カップ本体10の胴部11と外筒20の胴部21の間に空隙が形成され、この空隙の部分が断熱作用を果たす。しかも、紙カップ本体10の胴部11の中央付近には外側に突き出た拡大部分14を周回方向に設けてあるので、下方からこの拡大部分14のところまで空隙がある程度の間隔で形成され、さらに拡大部分14の上方でも空隙が形成される。したがって、断熱性容器Cに熱湯を入れた場合、内側の胴部11の熱が外側の胴部21に伝わるのが広い範囲に渡って防止され、この種の容器において通常把持されるどの場所をつかんで持っても熱くなることがない。また、上記の例では紙カップ本体10の胴部11には拡大部分14の下方で外面側に突出する周回方向の凸状部からなる補強リブ15を形成してあるので、この補強リブ15により紙カップ本体10の強度が上がると共に、外筒20の胴部21が内側に撓まないように支えの役目を果たすので、手で持って力を入れた場合に紙カップ本体10の胴部11と外筒20の胴部21の間の空隙が狭くなるのが防止される。
【0012】
図2は図1に示した断熱性容器の変形例を示すもので、この図2に示される断熱性容器Cは図1に示したものと略同じ構成をしているが、外筒20の上端部分が全周に渡って内側に閉じる方向にテーパー状に曲げられておらず、真っ直ぐのままになっている。このタイプの断熱性容器Cでは、外筒20の上端を紙カップ本体10における外向きカール部13の内側に当接させるか食い込ませた状態にしやすくするため、外筒20にその上方で狭くなるようなテーパーを付けるとよい。そして、外筒20における上端部分と内向きカール部22の少なくともいずれかで紙カップ本体10に接着して両者を一体とし、紙カップ本体10と外筒20の間に空隙を形成する点は図1に示した断熱性容器Cの場合と同様である。
【0013】
なお、図1及び図2に示した例では、紙カップ本体10における胴部11の拡大部分14は周回方向に連続状態で設けているが、この拡大部分14は周回方向に不連続状態で設けても構わない。
【0014】
外筒20はその表面に商品名や絵柄などが印刷されるが、この印刷は原反に対して行われる。そして、この印刷済みの原反を打ち抜くことで扇形状のブランクが形成され、このブランクを丸めて胴貼りし、下方開口縁に内向きカール部22を形成することで外筒20が形成される。ここで、印刷した絵柄等を保護する意味もあるが、紙をカールをしやすくするため、通常は原反の印刷時に最外層にOPニスを印刷している。しかし、このOPニスはエマルジョン系接着剤をはじくので、外筒20の内向きカール部22を紙カップ本体10の胴部下方に接着することができない。エマルジョン系以外の接着剤を使用することも考えられるが、耐熱性や臭いの問題から、さらには扱いやすさの点から、現状では胴貼りに使用しているのと同じエマルジョン系接着剤を使用するのが望まれる。
【0015】
そこで、外筒20における内向きカール部22の部分を紙カップ本体10の下方の側壁外周面に接着する場合は、カールのしやすさと糊付けを両立させるため、図3に示すようなパターンでOPニス24を印刷したブランクBを使用する。すなわち、外筒20の内向きカール部22の内側となるところの一部を除いたパターンでOPニス24を印刷するのである。図3に例示したパターンは、ブランクBの下端に沿って矩形状の未塗布部分25を規則的に残している。実際には、紙カップ本体10の外周を一周してエマルジョン系接着剤を塗布し、そこに外筒20を被せるので、未塗布部分が少なくとも一部にあれば接着することができる。したがって、未塗布部分のパターンは任意でよく、また図3のように全周に渡って均等に残す必要はなく、要は外筒20における内向きカール部の内側となるところの一部にOPニスの未塗布部分があればよい。なお、図中26は胴貼り部となるところで、ここは当然にOPニスを塗工しない。
【0016】
上記のように、OPニスの未塗布部分を残す代わりに次のような手段を講じてもよい。すなわち、OPニスは胴貼り部を残して全面に塗工し、内向きカール部の内側となるところにハーフカットや削り加工などによりキズ入れを行うようにする。紙カップ本体10の胴部11の外面と接触する部分の全体に渡って均等にキズを設けてもよいし、一部だけに設けてもよい。このようなキズを形成しておけば、キズを通してエマルジョン系接着剤が外筒20の紙にしみ込むので、外筒20の内向きカール部22を紙カップ本体10の胴部11の外面に接着することができるのである。
【0017】
なお、本発明の断熱性容器は、印刷する文字や模様が外側へ浮きだして凸部分を形成するようにエンボス加工を施してなる板紙にて形成した外筒を用いてもよい。この凸部分は、すべての文字や模様の部分について形成する必要はなく、強調したい文字や模様のみにしてもよい。このような構成の断熱性容器は図1や図2に示した断熱性容器Cと同様な断熱作用を発揮するが、特に凸部分では空隙が広いために断熱作用が大きくなる。
【0018】
また、本発明の断熱性容器は、外側となる面の全体に渡って微細なエンボス加工を施してなる板紙にて形成した外筒を用いてもよい。このような構成の断熱性容器は図1の断熱性容器Cと同様な断熱作用を発揮するが、紙カップ本体と外筒の間の空隙による断熱効果が発揮されるのに加え、外筒の表面の微細凹凸により持ちやすい上に手に熱が伝わりにくく、全体的に断熱効果が一層優れたものとなる。なお、エンボス加工による凹凸模様を外筒における胴部の全面に渡って形成してもよいし、凹凸模様を形成しない部分を一部に残した形態にしてもよい。例えば、手で持つ領域を考慮して胴部の上下に帯状に残してもよいし、またデザインを考慮して名前の部分などを模様状に残してもよい。
【0019】
【発明の効果】
本発明の断熱性容器は、上方開口縁に外向きカール部を有する上拡がりの紙カップ本体と、上方及び下方共に開口しており下方開口縁に内向きカール部を有する上拡がりの紙製の外筒とからなり、紙カップ本体の胴部の途中には該胴部の上拡がりのテーパーより小さな角度の上拡がりのテーパー又は鉛直方向のテーパーを付けて段部を形成することによって外側に突き出た拡大部分が周回方向に設けられており、外筒における内向きカール部にはその内側となるところの一部を除いて表面にOPニスが印刷されており、紙カップ本体に外筒を被せて外筒上端部分を紙カップ本体における外向きカール部の内側に食い込ませた状態とするとともに、外筒における内向きカール部の部分を紙カップ本体の下方の側壁外周面エマルジョン系接着剤で接着して両者を一体とすることにより形成され、紙カップ本体と外筒の間に空隙が形成されている構成としたので、胴部の下部から上部に至る広い範囲に渡って断熱用の空隙がある程度の間隔で形成されることから、胴部のいずれの場所を手で持っても内容物の熱が伝わりにくいという断熱性に優れたものとなる。
【0020】
また、外筒の上端部分を全周に渡って内側に閉じる方向に曲げた構成を採用することにより、空隙が大きくなり、断熱効果が一層優れたものとなる。
【0021】
また、外筒における内向きカール部の内側となるところの一部を除いて表面にOPニスが印刷されているか、或いは、外筒における内向きカール部の内側となるところにキズ入れが施されている構成を採用することにより、外筒における内向きカール部の部分を紙カップ本体の下方の側壁外周面に接着する場合に、エマルジョン系接着剤を使用しても、カールのしやすさと糊付けを両立させることができる。
【図面の簡単な説明】
【図1】本発明に係る断熱性容器の一例を示すもので、左半分及び右半分をそれぞれ正面図と断面図で示す概略構成図である。
【図2】図1に示した断熱性容器の変形例を示すもので、左半分及び右半分をそれぞれ正面図と断面図で示す概略構成図である。
【図3】外筒のブランクでOPニスの塗工部分を示すための説明図である。
【符号の説明】
C 断熱性容器
10 紙カップ本体
11 胴部
12 底板
13 外向きカール部
14 拡大部分
15 補強リブ
20 外筒
21 胴部
22 内向きカール部
23 上端部分
24 OPニス
25 未塗布部分
26 胴貼り部
a 段部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cup-shaped container for storing instant foods such as instant noodles, and more particularly to a container having excellent heat insulation properties that can be poured into hot water and eaten as it is.
[0002]
[Prior art]
Generally, plastic cups such as expanded polystyrene have been frequently used as this type of cup-shaped heat-insulating containers. However, since these become pollution problems when discarded, as an alternative, for example, As seen in Japanese Utility Model Laid-Open No. 4-45212, a paper heat insulating container has been proposed in which a body portion is doubled to form a heat insulating gap.
[0003]
[Problems to be solved by the invention]
The heat insulating container described in Japanese Utility Model Publication No. 4-45212 described in the prior art can obtain a cup having a heat insulating effect by a simple configuration in which a bottomless outer cylinder having a different taper is combined with a normal paper cup. There is an advantage. And since the space | gap for heat insulation becomes so large that it goes below, it will show a favorable heat insulation effect in the normal way of holding. However, there is a problem that if the state of grasping and holding the portion near the upper part continues for a long time, there is no gap or a narrow gap that exhibits a heat insulation effect, and the temperature gradually increases.
[0004]
The present invention has been made in order to solve the above-described problems, and the object of the present invention is to provide excellent heat insulation in which the heat of the contents is not easily transmitted regardless of where the body portion is held by hand. It is to provide a sex container.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a heat-insulating container according to the present invention includes an upwardly expanding paper cup body having an outwardly curled portion at an upper opening edge, and an inwardly curled portion at the lower opening edge. A paper cup outer tube having an upper expansion tape, and a stepped portion with a taper of an upward expansion angle or a taper in a vertical direction smaller than the taper of the upper expansion portion of the body portion in the middle of the body portion of the paper cup body. An enlarged portion protruding outward is formed in the circumferential direction by forming, and an OP varnish is printed on the surface of the inwardly curled portion of the outer cylinder except for a part inside thereof, and a paper cup with a state that bite into the upper end portion of the outer tube covered with a outer cylinder to the body on the inside of the outward curled portion of the paper cup body, a portion of the inwardly curled portion of the outer cylinder of the lower paper cup body Is formed by an integral, both being bonded by an emulsion-based adhesive Kabegaishu surface, it is characterized in that the gap between the paper cup body and the outer cylinder are formed.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with some examples.
[0007]
FIG. 1 shows an example of a heat-insulating container according to the present invention, and is a schematic configuration diagram showing a left half and a right half in a front view and a cross-sectional view, respectively. The heat-insulating container C in FIG. It is configured by combining a hollow cylindrical outer cylinder 20 that is open both upward and downward.
[0008]
The paper cup main body 10 is made of paper whose inner surface or both inner and outer surfaces are coated with a synthetic resin such as polyethylene. Like a normal paper cup, a circular bottom plate 12 is provided below a body portion 11 in which a fan-shaped blank is rolled. An outward curled portion 13 is formed at the edge of the upper opening, and an enlarged portion 14 is provided in the vicinity of the center of the body portion 11 so as to protrude outward by a taper different from the taper of the body portion 11. That is, to form a stepped portion a by appending the spread of tapered or vertical taper over on a small angle from the taper of the expansion on the body portion 11. Further, a reinforcing rib 15 is formed at a position slightly below the body portion 11 of the paper cup body 10 and is formed of a convex portion in the circumferential direction protruding outward. These enlarged portions 14 and reinforcing ribs 15 are formed on the paper cup body 10 using a male mold and a female mold before the paper cup body 10 and the outer cylinder 20 are combined. Here, the enlarged portion 14 of the paper cup body 10 is formed by inserting an expandable male mold into the paper cup body 10 and pushing the male mold toward the outer female mold, In this case, the die can be easily removed without being caught by applying an upwardly expanding taper or a vertical taper different from the taper of the body 11.
[0009]
On the other hand, the hollow cylindrical outer cylinder 20 is made of a sheet of paper or fan-shaped paper coated on one or both sides with a synthetic resin such as polyethylene, and an inwardly curled portion 22 is formed at the lower opening edge of the body portion 21. Has been. Here, both the paper cup main body 10 and the outer cylinder 20 are expanded upward, but the outer cylinder 20 has a taper in which the body portion 21 has a hem slightly expanded from the body portion 11 of the paper cup main body 10. In this example, the upper end portion 23 of the outer cylinder 20 is bent in a taper shape so as to be closed inward over the entire circumference, and the tip thereof is sized to contact the inner side of the outward curled portion 13 of the paper cup body 10. ing. The bending of the upper end portion 23 is not limited to the tapered shape, and may be bent in a curved state.
[0010]
Then, the outer cup 20 having the above-described configuration is put on the paper cup main body 10 and inserted, and the tip of the upper end portion 23 of the outer cylinder 20 is brought into contact with or bite into the inside of the outward curled portion 13 in the paper cup main body 10. The upper end portion 23 of the outer cylinder 20 is placed inside the outward curled portion 13 in the paper cup body 10 by means such as an emulsion adhesive applied to the outer peripheral surface of the body portion near the lower side of the outward curled portion 13 of the paper cup main body 10. The heat insulating container C shown in FIG. 1 is formed by bonding and integrating the two. Depending on the mode of use, the portion of the inwardly curled portion 22 formed at the lower opening edge of the outer cylinder 20 is also bonded to the outer peripheral surface of the lower side wall of the paper cup main body 10, so that the coupling between the paper cup main body 10 and the outer cylinder 20 is more reliable. It may be. Further, when the tip of the upper end portion 23 of the outer cylinder 20 is sufficiently cut into the inside of the outward curled portion 13 in the paper cup body 10, the portion of the inward curled portion 22 in the outer cylinder 20 is located below the paper cup main body 10. It can be fixed simply by bonding to the outer peripheral surface of the side wall.
[0011]
In the heat insulating container C having the above configuration, a gap is formed between the body portion 11 of the paper cup body 10 and the body portion 21 of the outer cylinder 20, and this space portion performs a heat insulating function. In addition, since an enlarged portion 14 protruding outward is provided in the circumferential direction near the center of the body portion 11 of the paper cup body 10, a gap is formed at a certain interval from below to the enlarged portion 14, and further enlarged. A gap is also formed above the portion 14. Therefore, when hot water is put into the heat insulating container C, the heat of the inner body part 11 is prevented from being transmitted to the outer body part 21 over a wide range, and any place that is normally gripped by this type of container can be prevented. Even if you hold it, it won't get hot. In the above example, the body 11 of the paper cup body 10 is formed with the reinforcing rib 15 formed of a convex portion in the circumferential direction that protrudes to the outer surface under the enlarged portion 14. As the strength of the main body 10 increases, the trunk portion 21 of the outer cylinder 20 plays a role of supporting the inner cylinder 21 so that it does not bend inward. It is possible to prevent the gap between the 20 body portions 21 from becoming narrow.
[0012]
2 shows a modification of the heat insulating container shown in FIG. 1, and the heat insulating container C shown in FIG. 2 has substantially the same configuration as that shown in FIG. The upper end portion is not bent in a taper shape so as to be closed inward over the entire circumference, and remains straight. In this type of heat insulating container C, the outer cylinder 20 is narrowed above the outer cylinder 20 in order to make the upper end of the outer cylinder 20 abut or bite into the inside of the outward curled portion 13 of the paper cup body 10. A good taper is recommended. Then, FIG. 1 shows that at least one of the upper end portion of the outer cylinder 20 and the inwardly curled portion 22 is bonded to the paper cup main body 10 so that both are integrated, and a gap is formed between the paper cup main body 10 and the outer cylinder 20. It is the same as that of the case of the shown heat insulating container C.
[0013]
In the example shown in FIGS. 1 and 2, the enlarged portion 14 of the body 11 of the paper cup body 10 is provided in a continuous state in the circumferential direction, but the enlarged portion 14 is provided in a discontinuous state in the circumferential direction. It doesn't matter.
[0014]
The outer cylinder 20 has a product name, a pattern, and the like printed on its surface, and this printing is performed on the original fabric. A fan-shaped blank is formed by punching out the printed original fabric, and the blank is rolled and pasted on a cylinder, and the inwardly curled portion 22 is formed at the lower opening edge to form the outer cylinder 20. . Here, there is a meaning to protect the printed pattern and the like, but in order to easily curl the paper, OP varnish is usually printed on the outermost layer when printing the original fabric. However, since this OP varnish repels an emulsion adhesive, the inwardly curled portion 22 of the outer cylinder 20 cannot be adhered to the lower portion of the body portion of the paper cup body 10. It is conceivable to use an adhesive other than the emulsion type, but from the viewpoint of heat resistance and odor, and from the viewpoint of ease of handling, the same emulsion type adhesive that is currently used for body bonding is used. It is desirable to do.
[0015]
Therefore, when the portion of the inwardly curled portion 22 in the outer cylinder 20 is bonded to the outer peripheral surface of the lower side wall of the paper cup main body 10, the OP varnish is formed in a pattern as shown in FIG. A blank B printed with 24 is used. That is, the OP varnish 24 is printed in a pattern excluding a part of the outer cylinder 20 that is inside the inwardly curled portion 22. The pattern illustrated in FIG. 3 regularly leaves rectangular uncoated portions 25 along the lower end of the blank B. Actually, the emulsion-type adhesive is applied around the outer periphery of the paper cup body 10 and the outer cylinder 20 is covered therewith, so that it can be bonded if there is at least part of the uncoated part. Therefore, the pattern of the uncoated portion may be arbitrary, and it is not necessary to leave it uniformly over the entire circumference as shown in FIG. 3. In short, OP is formed on a part of the outer cylinder 20 that is inside the inwardly curled portion. It is sufficient if there is an uncoated part of the varnish. In the figure, reference numeral 26 denotes a cylinder pasting portion. Naturally, no OP varnish is applied here.
[0016]
As described above, the following means may be taken instead of leaving the uncoated portion of OP varnish. That is, the OP varnish is applied to the entire surface, leaving the body pasting part, and scratching is performed on the inner side of the inward curled part by half-cutting or shaving. Scratches may be provided evenly over the entire portion of the paper cup body 10 that contacts the outer surface of the body portion 11 or may be provided only in part. If such a flaw is formed, the emulsion adhesive penetrates into the paper of the outer cylinder 20 through the flaw, so that the inwardly curled portion 22 of the outer cylinder 20 is adhered to the outer surface of the trunk portion 11 of the paper cup body 10. Can do it.
[0017]
Note that the heat insulating container of the present invention may use an outer cylinder formed of paperboard that is embossed so that characters or patterns to be printed float outward and form convex portions. This convex part does not have to be formed for all the characters and patterns, and may be only the characters and patterns to be emphasized. The heat insulating container having such a configuration exhibits a heat insulating action similar to that of the heat insulating container C shown in FIGS. 1 and 2, but the heat insulating action is increased because the gap is wide particularly in the convex portion.
[0018]
Moreover, you may use the outer cylinder formed with the paperboard which gave the fine embossing over the whole surface used as the heat insulation container of this invention. The heat-insulating container having such a configuration exhibits the same heat-insulating action as the heat-insulating container C in FIG. 1, but in addition to exhibiting the heat-insulating effect due to the gap between the paper cup body and the outer cylinder, the surface of the outer cylinder It is easy to hold due to the fine unevenness and heat is not easily transferred to the hand, so that the overall heat insulation effect is further improved. In addition, the uneven | corrugated pattern by embossing may be formed over the whole surface of the trunk | drum in an outer cylinder, and you may make it the form which left the part which does not form an uneven | corrugated pattern in part. For example, in consideration of the area held by the hand, it may be left in a strip shape above and below the trunk portion, or the name portion may be left in a pattern shape in consideration of the design.
[0019]
【The invention's effect】
The heat-insulating container of the present invention includes an upwardly-spreading paper cup body having an outwardly curled portion at the upper opening edge, and an upwardly-spreading paper-made outer body that is open both upward and downward and has an inwardly curled portion at the downward opening edge. An expansion projecting outwards by forming a step portion with an upwardly expanding taper or a vertical taper in the middle of the body portion of the paper cup body, with a taper of an upward angle smaller than that of the upwardly expanding taper portion or a vertical taper. The part is provided in the circumferential direction, and OP varnish is printed on the surface of the inwardly curled portion of the outer cylinder except for the inner part, and the outer cylinder is put on the paper cup body. the upper end portion with a state in which bite into the inside of the outward curled portion of the paper cup body, emulsion system the portion of the inward curled portion of the outer cylinder on the side wall peripheral surface of the lower paper cup body adhesion In is formed by an integral, both being bonded, since the configuration space between the paper cup body and the outer cylinder is formed, the gap for thermal insulation over a broad range extending from the lower portion of the body portion to the upper Is formed at a certain interval, so that the heat of the contents is not easily transmitted to any part of the body portion by hand, which is excellent in heat insulation.
[0020]
Further, by adopting a configuration in which the upper end portion of the outer cylinder is bent in the direction of closing inward over the entire circumference, the gap becomes larger and the heat insulating effect is further improved.
[0021]
Also, OP varnish is printed on the surface except for a part inside the inwardly curled portion of the outer cylinder, or scratching is applied to the inside of the inwardly curled portion of the outer cylinder. By adopting this configuration, when the inwardly curled portion of the outer cylinder is bonded to the outer peripheral surface of the side wall of the lower side of the paper cup body, it is possible to curl and paste even if an emulsion adhesive is used. Both can be achieved.
[Brief description of the drawings]
FIG. 1 shows an example of a heat insulating container according to the present invention, and is a schematic configuration diagram showing a left half and a right half in a front view and a cross-sectional view, respectively.
2 shows a modification of the heat insulating container shown in FIG. 1, and is a schematic configuration diagram showing a left half and a right half in a front view and a cross-sectional view, respectively.
FIG. 3 is an explanatory view for showing an OP varnish coating portion with a blank of an outer cylinder.
[Explanation of symbols]
C heat insulating container 10 paper cup main body 11 trunk 12 bottom plate 13 outward curled portion 14 enlarged portion 15 reinforcing rib 20 outer cylinder 21 trunk 22 inward curled portion 23 upper end portion 24 OP varnish 25 unapplied portion 26 trunk pasted portion a step Part

Claims (4)

上方開口縁に外向きカール部を有する上拡がりの紙カップ本体と、上方及び下方共に開口しており下方開口縁に内向きカール部を有する上拡がりの紙製の外筒とからなり、紙カップ本体の胴部の途中には該胴部の上拡がりのテーパーより小さな角度の上拡がりのテーパー又は鉛直方向のテーパーを付けて段部を形成することによって外側に突き出た拡大部分が周回方向に設けられており、外筒における内向きカール部にはその内側となるところの一部を除いて表面にOPニスが印刷されており、紙カップ本体に外筒を被せて外筒上端部分を紙カップ本体における外向きカール部の内側に食い込ませた状態とするとともに、外筒における内向きカール部の部分を紙カップ本体の下方の側壁外周面エマルジョン系接着剤で接着して両者を一体とすることにより形成され、紙カップ本体と外筒の間に空隙が形成されていることを特徴とする断熱性容器。A paper cup main body having an outwardly curled portion at the upper opening edge, and a paper outer tube having an upwardly extending paper opening at both the upper and lower ends and having an inwardly curled portion at the lower opening edge. In the middle of the body portion, an enlarged portion protruding outward is formed in the circumferential direction by forming a step portion with a taper of an upward expansion angle or a vertical taper smaller than the taper of the upward expansion of the body portion. The inwardly curled portion of the outer cylinder is printed with OP varnish on the surface except for a part inside, and the upper end portion of the outer cylinder is placed on the outer side of the paper cup body. with a state that bite into the inside orientation curled portion, integrally both a portion of the inwardly curled portion of the outer tube is adhered to the side wall peripheral surface of the lower paper cup body in emulsion adhesive It is formed by heat insulation container, wherein a gap is formed between the paper cup body and the outer cylinder. 拡大部分が周回方向に連続状態で設けられている請求項1に記載の断熱性容器。  The heat insulating container according to claim 1, wherein the enlarged portion is provided in a continuous state in a circumferential direction. 拡大部分が周回方向に不連続状態で設けられている請求項1に記載の断熱性容器。  The heat insulating container according to claim 1, wherein the enlarged portion is provided in a discontinuous state in the circumferential direction. 外筒の上端部分が全周に渡って内側に閉じる方向に曲げられている請求項1〜3のいずれかに記載の断熱性容器。  The heat-insulating container according to any one of claims 1 to 3, wherein an upper end portion of the outer cylinder is bent in a direction to close inward over the entire circumference.
JP36673199A 1999-12-24 1999-12-24 Heat insulating container Expired - Lifetime JP4259707B2 (en)

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Publication number Priority date Publication date Assignee Title
DE60102661T2 (en) 2001-01-30 2004-08-19 Seda S.P.A. Cardboard containers for beverages and processes therefor
DE102004056932B4 (en) 2004-11-22 2022-07-28 Ptm Packaging Tools Machinery Pte. Ltd. Double wall paper cup and method of making a double wall paper cup
BRPI0601188B1 (en) 2005-04-15 2018-06-26 Seda S.P.A. ISOLATED CONTAINER; METHOD OF MANUFACTURING THE SAME AND APPARATUS FOR MANUFACTURING
DE202005014177U1 (en) 2005-09-08 2005-11-17 Seda S.P.A., Arzano Double-walled beaker comprises an inner wall formed by an inner beaker which is made of a fluid-tight plastic material, and is releasably inserted into an outer beaker forming the outer wall
DE202005014738U1 (en) 2005-09-19 2007-02-08 Seda S.P.A., Arzano Container and cut
EP1785370B2 (en) 2005-11-11 2014-03-12 SEDA S.p.A. Insulated cup
EP1785265A1 (en) 2005-11-14 2007-05-16 SEDA S.p.A. Device for producing a stacking projection on a container wall and container with same
DE202006018406U1 (en) 2006-12-05 2008-04-10 Seda S.P.A. packaging
JP6022403B2 (en) * 2013-05-24 2016-11-09 東罐興業株式会社 Paper container and paper container manufacturing method
CN107613890B (en) * 2015-05-29 2020-07-10 奥林巴斯株式会社 Medical device

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