JP3899721B2

JP3899721B2 - Paper insulated container

Info

Publication number: JP3899721B2
Application number: JP04629799A
Authority: JP
Inventors: 勝浩大崎; 成志田中
Original assignee: Toppan Inc
Current assignee: Toppan Inc
Priority date: 1999-02-24
Filing date: 1999-02-24
Publication date: 2007-03-28
Anticipated expiration: 2019-02-24
Also published as: JP2000238740A

Description

【０００１】
【発明の属する技術分野】
本発明は、即席麺などを収容し、熱湯を注いでそのまま飲食可能ないわゆるインスタント食品やインスタント飲料用の紙製の断熱容器に関し、特には、紙カップ胴部と紙製断熱シートの間にドット状凸部を設け、胴部と紙製断熱シートの間に断熱空間層を設けた紙製断熱容器に関する。
【０００２】
【従来の技術】
紙カップ胴部と紙製断熱シートの間にドット状凸部を設け、両部材の間に断熱空間層を設けた発明としては、例えば、特公昭５８−３４３３４号公報、特開平８−２７６９２７号公報に開示された発明がある。
但し、これらの発明は、いずれもドット状凸部を発泡インキにより設けている。発泡インキは自体の材料の特性により、発泡時にかなりの臭気が発生するため食品用の容器としては使用することができない。
【０００３】
そこで、臭気の発生しない材料を用いてドット状凸部を形成した食品用に適した発明として、例えば、特開平７−２２３６８３号公報に開示された発明がある。
この発明は、凸部を形成する材料としてホットメルト接着剤を用いた発明であるが、ホットメルト接着剤による凸部を周方向に帯状に設けているため、生産スピードに限界があり、生産能力に劣り、構造的に上下の凸部間の空間は閉じられた空間となり、被収容物である食品の熱がこの空間内でこもってしまい、紙製断熱シート表面も熱くなるため、当初の断熱機能を果たせないという問題があった。
【０００４】
また、上下の帯状凸部間の空間が大きいため、手指をかける場所によっては紙製断熱シートが凹んで十分な断熱空間高さがなくなってしまうという問題もあった。
【０００５】
【発明が解決しようとする課題】
本発明は、紙カップ胴部と紙製断熱シートの間にホットメルト接着剤からなるドット状凸部を設け、両部材の間に断熱空間層を設けた紙製断熱容器に関する以上のような問題点に着目してなされたもので、臭気等の発生がなく、容器に手指等をかけても凹むことなく、十分な断熱効果を有する紙製断熱容器を提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明の第１の発明は、胴部と底部とからなり、開口部周縁が外側にカールした口縁部を有する紙カップ本体と、胴部を覆い、かつ、これに貼着される紙製断熱シートと、から構成される紙製断熱容器であって、紙カップ胴部と紙製断熱シートの間にホットメルト接着剤からなる碁盤目状に配置された多数のドット状凸部を上下で１／２ピッチづつ、ずらして配置させると共に、両部材の間に断熱空間層を設けたことを特徴とする紙製断熱容器である。
【０００７】
また、第２の発明は、第１の発明において、前記多数のドット状凸部が、紙カップ胴部の外面に配置されている紙製断熱容器である。
【０００８】
また、第３の発明は、第１の発明において、前記多数のドット状凸部が、紙製断熱シートの内面に配置されている紙製断熱容器である。
【０００９】
また、第４の発明は、第１の発明において、前記多数のドット状凸部が、紙カップ胴部の外面および紙製断熱シートの内面に配置されている紙製断熱容器である。
【００１１】
また、第５の発明は、第１、第２、第３または第４の発明において、前記ドット状凸部の直径ａを２〜５ｍｍ、頂点間距離ｂを３〜１５ｍｍ、離間距離ｃを１〜５ｍｍに設定した紙製断熱容器である。
【００１２】
【作用】
上記のように本発明によれば、紙カップ胴部と紙製断熱シートの間にホットメルト接着剤からなる多数のドット状凸部を配置させると共に、両部材の間に断熱空間層を設けたので、各凸部間の空間は閉じられておらず、被収容物である食品の熱は断熱空間層にこもることがなく、当初の断熱効果を満足する。
また、碁盤目状に配置された多数のドット状凸部を上下で１／２ピッチづつ、ずらして配置しているので、容器に手指をかけても断熱シートが凹むことがなく、十分な断熱高さを維持し断熱効果が持続する。
【００１３】
【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に示すように、胴部１１と底部１２からなり、開口部周縁が外側にカールした口縁部１３を有する紙カップ本体１０と、胴部を覆い、かつ、これに貼着される紙製断熱シート２０とから構成され、紙カップ胴部と紙製断熱シートの間に多数のドット状凸部３０を配置させると共に、両部材の間に断熱空間層４０を設けた紙製断熱容器１である。
【００１４】
紙カップ本体１０は、胴部を形成する胴部材、底部を形成する底部材ともに、坪量が１７０〜３１０ｇ／ｍ²程度のカップ原紙の両面、または片面に低密度ポリエチレン樹脂（ＬＤＰＥ）を２０〜４０μｍ程度溶融押出し法により塗布したポリエチレン加工紙を用いて、一般的な紙カップ成形機を使用して作製することができる。
【００１５】
紙製断熱シート２０は、坪量が２００〜２７０ｇ／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を素材として、紙カップ本体の胴部を覆う大きさの略扇形の形状を有するものである。
【００１６】
ドット状凸部３０は、紙カップ本体の胴部１１と紙製断熱シート２０の間に配置され、胴部１１と紙製断熱シート２０の間に断熱空間層４０を形成させる役割を担う。
【００１７】
材質自体は特に限定されないが、紙カップ本体の胴部１１や紙製断熱シート２０の表面に容易に塗布できること、また、紙カップ本体内に熱湯等を入れた際、ドット状凸部３０が熱により変形しないこと等を考慮すると、エチレン−酢酸ビニールコポリマー（ＥＶＡ）、ポリエチレン、ポリエステル等の熱可塑性樹脂を主成分とし、必要に応じてパラフィンワックス、マイクロクリスタリンワックス等のワックスやロジン等の粘着付与剤を添加した、比較的高融点のホットメルト接着剤が好ましく使用できる。
【００１８】
また、ドット状凸部３０はスプレーガン、グビビアロール等の公知の塗布機器を用いた塗布方法を用いて、紙製断熱シート２０の内側あるいは紙カップ本体の胴部１１の外側に塗布する。紙製断熱シート２０の内側と紙カップ本体の胴部１１の外側の両方の面に塗布することも可能である。
【００１９】
ドット状凸部３０は図２に示すように碁盤目状に配置したり、図３に示すように上下で１／２ピッチずつ、ずらして配置することが、容器を手に持った時、どの箇所を持っても凸部が均一に分布しているため、紙製断熱シート２０が凹まず、紙カップ本体の胴部１１に接することがなく、安定した断熱効果が得られる等の理由から好ましい。
【００２０】
ドット状凸部個々の形状、配置関係は、直径ａが２〜５ｍｍ、隣り合った凸部の頂点間距離ｂが３〜１５ｍｍ、隣り合った凸部の離間距離ｃが１〜５ｍｍとすることが、生産上好ましい。直径ａが大きすぎる場合、ホットメルトの押し出し時間が長くなり、生産能力が低下する。また、ドット状凸部の直径ａ、頂点間距離ｂ、離間距離ｃは、手で持った時、凹みが生じて紙カップ本体の胴部１１に接することがないように設計することが必要である。
【００２１】
なお、紙カップ本体に紙製断熱シートを貼着させる方法としては、ホットメルト接着剤が固化する前に紙カップ本体に紙製断熱シートを巻き付け、このホットメルト接着剤で紙カップ本体に紙製断熱シートを貼着することも、ホットメルト接着剤を完全に固化させた後、紙製断熱シートを他の接着剤で紙カップ本体と貼着させることもできる。
【００２２】
また、紙カップ本体の胴部に紙製断熱シートを巻き付けるように貼着させ、断熱シートの端縁同士が向かい合う突き合わせ法でも、断熱シートの端縁同士を重ね合わせて接着させ、すなわち、予め扇形の断熱シートを筒状に成形しておき、ついで、紙カップ本体に嵌め込み接着させる方法でも、いずれの方法を用いても構わない。
【００２３】
【実施例】
以下に本発明の実施例をさらに具体的に説明する。
〈実施例１〉
先ず、坪量２６０ｇ／ｃｍ²のカップ原紙の両面に厚さ２０μｍのＬＤＰＥを塗布した加工紙を用い、一般的な紙カップ成形機を使用して、開口部周縁が外側にカールした口縁部１３を有する、開口径；９５ｍｍ、底径；６５ｍｍ、高さ；１１０ｍｍの紙カップ本体１０を作製した。
【００２４】
別に、坪量２３０ｇ／ｃｍ²のコートボールを用いて、所定寸法の略扇形の紙製断熱シート２０を打ち抜き作製した。
【００２５】
この紙製断熱シート２０の紙カップ本体の胴部と接する方の面の表面に、ＥＶＡ樹脂を主成分とするホットメルト接着剤をホットメルトガンを用いて直径ａが３ｍｍのドット状凸部３０を、隣り合う凸部と凸部の頂点間距離ｂが略９ｍｍ、隣り合う凸部と凸部の離間距離ｃが略３ｍｍとなるようにして略碁盤目状の扇形に、断熱シートの端縁部を除いて多数形成させる（図２参照）、と同時に多数のドット状凸部３０を形成させた紙製断熱シート２０を紙カップ本体の胴部１１に、口縁部１３の下から巻き付けるようにして覆って、紙製断熱シート２０を紙カップ本体の胴部１１に貼着させ、胴部１１と紙製断熱シート２０の間の、凸部３０を除いた部分に断熱空間層４０を形成させた実施例１の紙製断熱容器１を作製した。
【００２６】
〈実施例２〉
紙製断熱シート２０のドット状凸部３０を形成させる模様を実施例１とは１／２ピッチずつ、ずらして図３に示すような模様に形成させた以外は、実施例１と同様の材料、方法を用いて実施例２の紙製断熱容器を作製した。
【００２７】
〈実施例３〉
実施例１と同じ紙カップ本体１０の胴部１１に、実施例１で紙製断熱シート２０に形成させたと同じドット状凸部３０を実施例１と同じ模様に形成させると同時に、実施例１で使用したと同じ紙製断熱シート２０を紙カップ本体の胴部１１に、口縁部１３の下から巻き付けるようにして覆って、紙製断熱シート２０を紙カップ本体の胴部１１に貼着させ、胴部１１と紙製断熱シート２０の間の、凸部３０を除いた部分に断熱空間層４０を形成させた実施例３の紙製断熱容器を作製した。
【００２８】
このようにして作製した３種類の紙製断熱容器の断熱効果を評価するため、各容器に即席麺を入れ、熱湯を注いで３分間放置後、容器の胴部を手指等で握持したが、いずれの容器も容易に手で持つことができ、紙製断熱シートが凹むこともなかった。
【００２９】
【発明の効果】
上記のように本発明の紙製断熱容器は、ホットメルト接着剤により凸部をドット状に設けたため、臭気等の発生もなく、食品用容器として十分使用し得る。
凸部をドット状としたことで、容器の胴部のどの位置に指をかけても指と凸部相当部分は点接触となるため体感的にも十分な断熱効果を得ることができる。
さらに凸部をドット状としたことで、指を容器のどの部分にかけても紙製断熱シートの凹みはほとんどなく、十分な断熱効果が持続できる。
【図面の簡単な説明】
【図１】本発明の紙製断熱容器の一例を示す部分断面説明図である。
【図２】本発明に用いるドット状凸部を紙製断熱シートの表面に配置した形状の一例を示す説明図である。
【図３】本発明に用いるドット状凸部を紙製断熱シートの表面に配置した形状の別の一例を示す説明図である。
【符号の説明】
１‥‥紙製断熱容器
１０‥‥紙カップ本体
１１‥‥胴部
１２‥‥底部
１３‥‥口縁部
２０‥‥紙製断熱シート
３０‥‥ドット状凸部
４０‥‥断熱空間層
ａ‥‥ドット状凸部の直径
ｂ‥‥隣り合うドット状凸部とドット状凸部の頂点間距離
ｃ‥‥隣り合うドット状凸部とドット状凸部の離間距離[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper insulated container for so-called instant foods and instant beverages that contain instant noodles, etc., and can be eaten as it is by pouring hot water, in particular, a dot shape between a paper cup barrel and a paper thermal insulation sheet. The present invention relates to a paper heat insulating container in which a convex portion is provided and a heat insulating space layer is provided between the body portion and the paper heat insulating sheet.
[0002]
[Prior art]
For example, Japanese Patent Publication No. 58-34334 and Japanese Patent Application Laid-Open No. 8-276927 are disclosed in which a dot-like convex portion is provided between the paper cup body and the paper heat insulating sheet, and a heat insulating space layer is provided between the two members. There is an invention disclosed in.
However, all of these inventions are provided with dot-like convex portions by foamed ink. Foamed inks cannot be used as food containers because they generate a considerable odor during foaming due to the properties of their materials.
[0003]
Then, as an invention suitable for foods in which dot-like convex portions are formed using a material that does not generate odor, there is an invention disclosed in Japanese Patent Laid-Open No. 7-223683, for example.
This invention is an invention using a hot melt adhesive as a material for forming a convex part, but the convex part by the hot melt adhesive is provided in a band shape in the circumferential direction, so there is a limit to the production speed and the production capacity Inferior to this, the space between the upper and lower convex parts is structurally closed, and the heat of the food that is to be contained is confined in this space, and the surface of the heat insulating sheet made of paper also becomes hot. There was a problem that it could not function.
[0004]
In addition, since the space between the upper and lower belt-shaped convex portions is large, there is a problem that depending on the place where fingers are placed, the heat insulating sheet made of paper is recessed and the sufficient heat insulating space height is lost.
[0005]
[Problems to be solved by the invention]
The present invention has the above-described problems relating to a paper heat insulating container in which a dot-shaped convex portion made of a hot melt adhesive is provided between a paper cup body and a paper heat insulating sheet, and a heat insulating space layer is provided between both members. The purpose of the present invention is to provide a paper heat insulating container which has a sufficient heat insulating effect without causing odors and the like to be depressed even if a finger is put on the container.
[0006]
[Means for Solving the Problems]
A first invention of the present invention comprises a paper cup body having a lip portion having a body portion and a bottom portion, and the periphery of the opening portion being curled outward, and a paper heat insulation covering and sticking to the body portion. A plurality of dot-shaped convex portions arranged in a grid pattern made of a hot melt adhesive between the paper cup body and the paper heat insulating sheet. 2 pitch increments, dissipate placed staggered, a paper insulated container, characterized in that a heat-insulating space layer between the two members.
[0007]
Moreover, 2nd invention is a paper heat insulation container in which the said many dot-shaped convex part is arrange | positioned on the outer surface of the paper cup trunk | drum in 1st invention.
[0008]
Moreover, 3rd invention is a paper heat insulation container in which the said many dot-shaped convex part is arrange | positioned in the 1st invention on the inner surface of a paper heat insulation sheet.
[0009]
Moreover, 4th invention is a paper heat insulation container in which the said many dot-shaped convex part is arrange | positioned in 1st invention on the outer surface of a paper cup trunk | drum, and the inner surface of a paper heat insulation sheet.
[0011]
Further, the fifth invention, the first, second, was the third or the fourth aspect, 2 to 5 mm diameter a of the dot-shaped convex portion, the vertex distance b 3 to 15 mm, the distance c Is a paper insulated container set to 1-5 mm.
[0012]
[Action]
As described above, according to the present invention, a large number of dot-shaped convex portions made of a hot melt adhesive are disposed between the paper cup body and the paper heat insulating sheet, and the heat insulating space layer is provided between the two members. The space between the convex portions is not closed, and the heat of the food, which is an object to be contained, does not stay in the heat insulating space layer, satisfying the initial heat insulating effect.
Also, a number of dot-shaped convex portions of the 1/2 pitch increments above and below that are arranged in a grid pattern, so staggered are arranged, without thermal insulation sheets dented even over fingers to the container, sufficient heat insulation Maintains the height and maintains the thermal insulation effect.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail by way of examples.
As shown in FIG. 1, for example, the paper heat insulating container of the present invention includes a paper cup body 10 having a body portion 11 and a bottom portion 12 and having a lip portion 13 whose outer periphery is curled outward, and covers the body portion. And it is comprised from the paper heat insulation sheet 20 stuck on this, and while arranging many dot-shaped convex parts 30 between a paper cup trunk | drum and paper heat insulation sheets, the heat insulation space layer 40 between both members is provided. It is the paper heat insulation container 1 which provided.
[0014]
The paper cup body 10 has a body member that forms the body part and a bottom member that forms the bottom part, and a low-density polyethylene resin (LDPE) 20 to 20% on one or both sides of a cup base paper having a basis weight of about 170 to 310 g / m ^2. It can be produced using a general paper cup molding machine using polyethylene processed paper coated by a melt extrusion method of about 40 μm.
[0015]
The heat insulating sheet 20 made of paper has a substantially fan-shaped shape that covers the trunk of the paper cup body using a paperboard such as a white liner having a basis weight of about 200 to 270 g / m ² , a coated ball, a bleached craft, and an ivory. It is what you have.
[0016]
The dot-shaped convex part 30 is disposed between the body part 11 of the paper cup body and the paper heat insulating sheet 20, and plays a role of forming a heat insulating space layer 40 between the body part 11 and the paper heat insulating sheet 20.
[0017]
Although the material itself is not particularly limited, it can be easily applied to the surface of the body 11 of the paper cup body and the paper heat insulating sheet 20, and when hot water or the like is put into the paper cup body, the dot-shaped convex portions 30 are deformed by heat. In consideration of not doing so, the main component is a thermoplastic resin such as ethylene-vinyl acetate copolymer (EVA), polyethylene, or polyester, and if necessary, a wax such as paraffin wax or microcrystalline wax or a tackifier such as rosin. The added hot melt adhesive having a relatively high melting point can be preferably used.
[0018]
Moreover, the dot-shaped convex part 30 is apply | coated to the inner side of the paper heat insulation sheet 20 or the outer side of the trunk | drum 11 of a paper cup main body using the apply | coating method using well-known application apparatuses, such as a spray gun and a gubibia roll. It is also possible to apply to both the inner surface of the paper heat insulating sheet 20 and the outer surface of the body portion 11 of the paper cup body.
[0019]
The dot-shaped protrusions 30 can be arranged in a grid pattern as shown in FIG. 2 or can be shifted by 1/2 pitch at the top and bottom as shown in FIG. Even if it has a part, since the convex part is uniformly distributed, the paper heat insulating sheet 20 is not concave and is not in contact with the body part 11 of the paper cup body, which is preferable because a stable heat insulating effect can be obtained.
[0020]
The shape and arrangement of the individual dot-shaped protrusions are such that the diameter a is 2 to 5 mm, the inter-vertex distance b between adjacent protrusions is 3 to 15 mm, and the separation distance c between adjacent protrusions is 1 to 5 mm. Is preferable for production. When the diameter a is too large, the hot melt extrusion time becomes long, and the production capacity decreases. Further, the diameter a, the apex distance b, and the separation distance c of the dot-shaped convex portions need to be designed so as not to be in contact with the body portion 11 of the paper cup body when held by hand. .
[0021]
In addition, as a method of sticking the paper insulation sheet to the paper cup body, the paper insulation sheet is wrapped around the paper cup body before the hot melt adhesive is solidified, and the paper insulation sheet is attached to the paper cup body with the hot melt adhesive. Alternatively, the paper heat insulating sheet can be adhered to the paper cup body with another adhesive after the hot melt adhesive is completely solidified.
[0022]
In addition, the paper heat insulating sheet is wrapped around the body of the paper cup body, and even with the butting method in which the edges of the heat insulating sheets face each other, the edges of the heat insulating sheets are overlapped and bonded together, that is, a fan-shaped in advance. Either a method of forming a heat insulating sheet into a cylindrical shape and then fitting it into a paper cup body and bonding it may be used.
[0023]
【Example】
Examples of the present invention will be described more specifically below.
<Example 1>
First, a processed paper obtained by applying LDPE having a thickness of 20 μm on both sides of a cup base paper having a basis weight of 260 g / cm ² , and using a general paper cup molding machine, the rim part 13 whose peripheral edge of the opening is curled outwardly. A paper cup body 10 having an opening diameter of 95 mm, a bottom diameter of 65 mm, and a height of 110 mm was prepared.
[0024]
Separately, using a coated ball having a basis weight of 230 g / cm ² , a substantially fan-shaped paper heat insulating sheet 20 having a predetermined size was punched out.
[0025]
On the surface of the paper heat insulating sheet 20 on the surface in contact with the body portion of the paper cup body, a hot melt adhesive mainly composed of EVA resin is used to form dot-shaped convex portions 30 having a diameter a of 3 mm using a hot melt gun. The edge portion of the heat insulating sheet is formed into a substantially grid-like fan shape so that the distance b between the adjacent convex portions and the convex portion is approximately 9 mm, and the separation distance c between the adjacent convex portions and the convex portion is approximately 3 mm. (See FIG. 2). At the same time, a paper heat insulating sheet 20 on which a large number of dot-shaped convex portions 30 are formed is wound around the trunk portion 11 of the paper cup body from below the lip portion 13. Covering, the paper heat insulation sheet 20 was stuck to the trunk | drum 11 of a paper cup main body, and the heat insulation space layer 40 was formed in the part except the convex part 30 between the trunk | drum 11 and paper heat insulation sheet 20. The paper insulated container 1 of Example 1 was produced.
[0026]
<Example 2>
The same material as in Example 1 except that the pattern for forming the dot-shaped convex portions 30 of the paper heat insulating sheet 20 is shifted by 1/2 pitch from that in Example 1 to form the pattern as shown in FIG. The paper heat insulation container of Example 2 was produced using the method.
[0027]
<Example 3>
The same dot-shaped convex part 30 as that formed in the paper heat insulating sheet 20 in Example 1 is formed in the same pattern as in Example 1 on the body part 11 of the same paper cup body 10 as in Example 1, and at the same time in Example 1. The same paper heat insulation sheet 20 as used is wrapped around the trunk portion 11 of the paper cup main body so as to be wound from below the lip 13, and the paper heat insulation sheet 20 is adhered to the trunk portion 11 of the paper cup main body. A paper heat insulating container of Example 3 in which the heat insulating space layer 40 was formed between the portion 11 and the paper heat insulating sheet 20 except the convex portion 30 was produced.
[0028]
In order to evaluate the heat insulation effect of the three types of paper heat insulation containers produced in this way, instant noodles were put into each container, hot water was poured and left for 3 minutes, and then the body of the container was held with fingers. Any container could be easily held by hand, and the paper insulation sheet was not recessed.
[0029]
【The invention's effect】
As described above, since the paper heat insulating container of the present invention is provided with the convex portions in a dot shape by the hot melt adhesive, it does not generate odor and can be sufficiently used as a food container.
Since the convex portions are formed in a dot shape, the finger and the portion corresponding to the convex portions are in point contact regardless of the position on the body portion of the container, so that a sufficient thermal insulation effect can be obtained.
Furthermore, since the convex portions are in the form of dots, there is almost no dent in the paper heat insulating sheet regardless of which part of the container the finger is placed on, and a sufficient heat insulating effect can be maintained.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional explanatory view showing an example of a paper heat insulating container of the present invention.
FIG. 2 is an explanatory diagram showing an example of a shape in which dot-shaped convex portions used in the present invention are arranged on the surface of a paper heat insulating sheet.
FIG. 3 is an explanatory diagram showing another example of the shape in which the dot-shaped convex portions used in the present invention are arranged on the surface of the paper heat insulating sheet.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Paper insulation container 10 ... Paper cup main body 11 ... Body part 12 ... Bottom part 13 ... Mouth edge part 20 ... Paper insulation sheet 30 ... Dot-shaped convex part 40 ... Thermal insulation space layer a ... The diameter b of the dot-shaped protrusions ... Distance between the vertexes of the adjacent dot-shaped protrusions and the dot-shaped protrusions c ... The separation distance between the adjacent dot-shaped protrusions and the dot-shaped protrusions

Claims

A paper made of a paper cup body having a body part and a bottom part, and having a mouth part with an opening edge curled outward, and a paper heat insulating sheet that covers the body part and is adhered to the body. a heat-insulating container, a half pitch increments the number of dot-shaped convex portions arranged in a grid pattern consisting of hot melt adhesive between the paper cup body portion and the paper insulation sheets in the vertical, is placed shifted In addition, a paper heat insulating container characterized in that a heat insulating space layer is provided between both members.

2. The paper heat insulating container according to claim 1, wherein the plurality of dot-shaped convex portions are arranged on an outer surface of the paper cup body portion.

2. The paper heat insulating container according to claim 1, wherein the plurality of dot-shaped convex portions are disposed on an inner surface of the paper heat insulating sheet.

2. The paper heat insulating container according to claim 1, wherein the plurality of dot-shaped convex portions are disposed on an outer surface of the paper cup body portion and an inner surface of the paper heat insulating sheet.

The diameter of the said dot-shaped convex part was 2-5 mm, the distance b between vertices was set to 3-15 mm, and the separation distance c was set to 1-5 mm, The product made from paper of Claim 1, 2, 3 or 4 characterized by the above-mentioned. Insulated container.