JPH0542929A - Container and production thereof - Google Patents
Container and production thereofInfo
- Publication number
- JPH0542929A JPH0542929A JP21918391A JP21918391A JPH0542929A JP H0542929 A JPH0542929 A JP H0542929A JP 21918391 A JP21918391 A JP 21918391A JP 21918391 A JP21918391 A JP 21918391A JP H0542929 A JPH0542929 A JP H0542929A
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- melting point
- container
- layer
- paper
- 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.)
- Granted
Links
Landscapes
- Packages (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は紙製容器に関する。更に
詳細には、本発明は優れた断熱性を有する使い捨て紙製
容器に関する。FIELD OF THE INVENTION The present invention relates to a paper container. More specifically, the present invention relates to disposable paper containers having excellent thermal insulation.
【０００２】[0002]
【従来の技術】ハンバーガーショップなどのファースト
フード店や列車の車内あるいは自動販売機などでコーヒ
ーあるいはスープなどの温飲料が購入者に供される場
合、およびカップ入り即席ラーメンなどでは一般的に断
熱容器が使用されている。2. Description of the Related Art In general, when a hot drink such as coffee or soup is served to a purchaser in a fast food store such as a hamburger shop, in a train or in a vending machine, and in a cup of instant ramen, a heat insulating container is generally used. Is used.
【０００３】従来からこのような用途に使用される容器
の一例を図４に示す。この容器２０は全体が発泡スチロ
ール（ＥＰＳ）から構成されており、底板部２２と胴部
２４とは最初から一体的に形成されている。発泡スチロ
ール胴部の厚さは約１．０〜２mm程度であり、断熱性の
点では非常に優れており、９５℃の珈琲あるいは熱湯が
容器内に充填されても、胴部外壁における温度は６０℃
程度になる。しかし、この容器は全体のプラスチックを
発泡させていることから、嵩があり、ゴミ量が多くな
る。そして、使用後にゴミとして焼却処分する際、高熱
を発して燃焼するため焼却炉を損傷しやすいことが知ら
れている。また、石油資源の節約の観点からも見直しが
求められている。更に、発泡スチロールの外表面は微小
な凹凸が多数存在するので、外表面に模様、文字、記号
などを印刷しても鮮明に表現されないなどの欠点も知ら
れている。また、紙カップに比べ肉厚強度が弱く、即席
麺などの比較的大きな容器の場合、輸送中に割れたりす
ることがある。FIG. 4 shows an example of a container conventionally used for such an application. The container 20 is entirely made of Styrofoam (EPS), and the bottom plate portion 22 and the body portion 24 are integrally formed from the beginning. The thickness of the styrofoam body is about 1.0 to 2 mm, which is extremely excellent in terms of heat insulation. Even if 95 ° C coffee or hot water is filled in the container, the temperature on the outer wall of the body is 60%. ℃
It will be about. However, since this container is made by foaming the entire plastic, it is bulky and has a large amount of dust. It is known that when incinerated as garbage after use, the incinerator is easily damaged because it emits high heat and burns. It is also required to be reviewed from the viewpoint of saving petroleum resources. Furthermore, since the outer surface of styrofoam has many minute irregularities, it is also known that even if a pattern, characters, symbols, etc. are printed on the outer surface, it cannot be clearly expressed. In addition, the wall thickness strength is weaker than that of a paper cup, and in the case of a relatively large container such as instant noodles, it may be broken during transportation.
【０００４】前記の発泡スチロールからなるプラスチッ
ク製容器の他に、スチロールシート（ＰＳＰ）成型カッ
プが使用されている。ＰＳＰカップは既に発泡された均
一なシートより成形されるため、ＥＰＳカップのように
成型時に整形を行う必要はないが、逆に厚みが厚すぎる
と、成型できないばかりでなく、成型時には熱と圧力を
使用するため、当初の厚いシート材料も潰されてしまう
ことになり、ＥＰＳカップのような肉厚を有するカップ
は得られない。このため、ＰＳＰカップではＥＰＳカッ
プのような優れた断熱性が得られない。In addition to the plastic container made of expanded polystyrene, a polystyrene sheet (PSP) molding cup is used. Since the PSP cup is molded from a uniform sheet that has already been foamed, it is not necessary to perform shaping when molding, unlike the EPS cup. On the contrary, if the thickness is too thick, it will not be possible to mold, and heat and pressure will be applied during molding. However, since the initially thick sheet material is also crushed, a cup having a wall thickness like the EPS cup cannot be obtained. For this reason, the PSP cup cannot obtain the excellent heat insulating property unlike the EPS cup.
【０００５】前記のような発泡プラスチック製容器の他
に、図５に示すような、把手２６が紙製胴部２８の適当
な箇所に糊付けされた紙製使い捨て容器３０も使用され
ている。紙製胴部自体には殆ど断熱性はない。このた
め、容器内に高温の珈琲が充填されたら、把手２６を引
き起こし、この把手を掴むことにより熱気を避けること
ができる。しかし、この容器は幾つかの欠点を有する。
第１に、把手部材２６は容器３０の形成後に胴部２８の
外壁に糊付けするが、その位置合わせは決して容易では
ない。このため、製造のためのライン速度を落とす必要
があり、単位時間当たりの製造歩留りも低くなる。ま
た、糊付けのための工程が増える分、コスト高になる。
更に不都合なことに、糊付け不良に起因して、使用中に
把手が容器胴部から脱落することも有り得る。また、把
手自体にもさほど高い機械強度があるわけではないの
で、即席麺などのような大きな容器には使用できない。In addition to the foamed plastic container described above, a disposable paper container 30 in which a handle 26 is glued to an appropriate portion of a paper body 28 as shown in FIG. 5 is also used. The paper barrel itself has little heat insulation. Therefore, when the high temperature coffee is filled in the container, the handle 26 is raised and the handle can be held to avoid hot air. However, this container has several drawbacks.
First, the handle member 26 is glued to the outer wall of the body portion 28 after the container 30 is formed, but its alignment is not easy at all. For this reason, it is necessary to reduce the line speed for manufacturing, and the manufacturing yield per unit time also decreases. In addition, the cost increases due to the increased number of steps for gluing.
Even worse, the handle may fall off the barrel of the container during use due to poor gluing. Moreover, since the handle itself does not have so high mechanical strength, it cannot be used in a large container such as instant noodles.
【０００６】また、把手の代わりに、図６に示されるよ
うな、波板状の、いわゆるコルゲートバンド３２を紙製
容器胴部外壁に巻き付け、接着させた容器３４も使用さ
れている。このような容器は機械強度の点で優れている
ので、例えば、即席麺用容器などに使用されている。し
かし、この容器では、外周が波状のコルゲートバンドな
ので、外観の審美性に劣るばかりか、デザイン上での割
付が難しい。Instead of the grip, a corrugated band-shaped so-called corrugated band 32, as shown in FIG. 6, is wrapped around the outer wall of the paper container body and adhered thereto. Since such a container is excellent in mechanical strength, it is used, for example, as a container for instant noodles. However, since this container is a corrugated band having a wavy outer periphery, it is not only aesthetically inferior in appearance, but also difficult to allocate in design.
【０００７】特開昭５１−１１５１６７号公報および特
公昭５９−２０５４０号公報には、紙に発泡性樹脂を被
着させた断熱性容器が開示されている。しかし、発泡性
樹脂を使用すると、一般的に発泡層を形成させる工程の
管理が難しい。発泡性樹脂を紙の表面に予め塗布する工
程においては、熱を使用することができないために、樹
脂の均一な塗布が困難であり、その結果、均一な塗布被
膜が形成されない。このため、後の加熱発泡工程におい
ても、平滑な表面を有する均一な厚さの発泡層が形成さ
れにくい。このような平滑でない表面の発泡断熱層を有
する容器内に液体を充填すると、液体が滲んだり、浸み
だしたりするという欠点があった。また、発泡シートと
紙を組み合わせた場合、切断が難しく、切断面もぼそぼ
そになり、屑がでやすいばかりか、切断端の見栄えが悪
くなる。断熱性と発泡シートの厚みは比例関係にある
が、あまり全体厚さが厚くなりすぎると成形加工適性が
不良になり、特に、トップカールなどはできなくなる。
更に、厚みをだすために高い発泡倍率のシートを使用す
ると、サイドシーム接着の際の熱と圧力のため、発泡層
が収縮したり、歪んだりし、均一な接着ができないとい
う欠点があった。発泡シートと紙を組み合わせたものの
致命的欠点は、紙と発泡層との接着性が低く、発泡層が
紙から剥離しやすいことである。Japanese Unexamined Patent Publication No. 51-115167 and Japanese Patent Publication No. 59-20540 disclose a heat insulating container in which a foaming resin is adhered to paper. However, when a foamable resin is used, it is generally difficult to control the step of forming a foam layer. In the step of applying the expandable resin to the surface of the paper in advance, it is difficult to apply heat uniformly because the heat cannot be used, and as a result, a uniform applied film is not formed. Therefore, it is difficult to form a foamed layer having a smooth surface and a uniform thickness even in the subsequent heating and foaming step. When a liquid is filled in a container having such a foamed heat insulating layer having a non-smooth surface, there is a drawback that the liquid bleeds or oozes out. Further, when a foamed sheet and paper are combined, it is difficult to cut, the cut surface becomes uneven, and not only scraps are easily generated, but also the cut end looks bad. The heat insulating property and the thickness of the foamed sheet are in a proportional relationship, but if the overall thickness is too thick, the suitability for molding will be poor, and in particular top curl will not be possible.
Further, when a sheet having a high expansion ratio is used to increase the thickness, there is a drawback that the foam layer shrinks or is distorted due to heat and pressure during side seam adhesion, and uniform adhesion cannot be achieved. A fatal drawback of the combination of the foamed sheet and the paper is that the adhesiveness between the paper and the foamed layer is low and the foamed layer is easily peeled off from the paper.
【０００８】また、特公昭４８−３２２８３号公報に
は、紙にポリエチレンフィルムのような熱可塑性樹脂を
ラミネートし、紙に含有されている水分を利用して、フ
ィルム表面を凹凸状にする技術が開示されている。表面
の凹凸の発現は、紙の水分分布、フィルムと紙との接着
強度、紙表面の平滑性などのファクタにより大きく左右
されるばかりか、発泡剤を使用していないので、発泡効
果としては不十分であり、あくまで凹凸ができる程度で
ある。発泡は熱可塑性樹脂フィルムの融点または軟化点
付近の温度に加熱することにより行われるので、水分の
分布にばらつきがあれば、フィルムにも発泡しきらない
箇所と発泡しすぎてパンクし、ピンホールとなる箇所が
混在してしまう。このため、液体を充填すると滲んだ
り、浸みだしたりするので、飲料用紙カップの内壁面に
は使用できなかった。Further, Japanese Patent Publication No. 48-32283 discloses a technique in which a thermoplastic resin such as a polyethylene film is laminated on paper, and the moisture contained in the paper is used to make the film surface uneven. It is disclosed. The appearance of surface irregularities is greatly influenced by factors such as the water distribution of the paper, the adhesive strength between the film and the paper, the smoothness of the paper surface, etc. It is sufficient, and it is enough to make unevenness. Foaming is performed by heating to a temperature near the melting point or softening point of the thermoplastic resin film, so if there is a variation in the distribution of water, the film will not be fully foamed and the film will be too foamy and punctured, resulting in pinholes. Will be mixed. For this reason, when it is filled with liquid, it bleeds or oozes out, so it cannot be used on the inner wall surface of a beverage paper cup.
【０００９】[0009]
【発明が解決しようとする課題】従って、本発明の目的
は、紙製容器でありながら、従来のような把手部材ある
いはコルゲートバンドを使用することなく、発泡プラス
チック（ＥＰＳ）容器に匹敵する断熱性を有する使い捨
て容器を提供することである。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a heat insulating property comparable to a foamed plastic (EPS) container without using a handle member or a corrugated band as in a conventional case, though it is a paper container. It is to provide a disposable container having.
【００１０】[0010]
【課題を解決するための手段】前記目的を達成するため
に、本発明では、底板部材と胴部材とからなる紙製容器
において、前記胴部材の少なくとも一方の壁面に、紙の
表面側から低融点の熱可塑性樹脂の発泡内層と該熱可塑
性樹脂の融点よりも高い融点を有する熱可塑性樹脂の非
発泡外層とからなる２層構造断熱膜が被着されているこ
とを特徴とする容器を提供する。In order to achieve the above object, in the present invention, in a paper container comprising a bottom plate member and a body member, at least one wall surface of the body member is provided with a lower surface from the front side of the paper. Provided is a container characterized in that a two-layer heat insulating film comprising a foamed inner layer of a thermoplastic resin having a melting point and a non-foamed outer layer of a thermoplastic resin having a melting point higher than the melting point of the thermoplastic resin is attached. To do.
【００１１】また、本発明では、長尺の原紙の少なくと
も片側に、紙の表面側から低融点の熱可塑性樹脂の内層
と該熱可塑性樹脂の融点よりも高い融点を有する熱可塑
性樹脂の外層とからなる２層構造ラミネート膜を被着
し、前記原紙から胴部材を打ち抜き、この胴部材と前記
原紙または他の原紙から打ち抜かれた底板部材とから容
器を成形し、その後、該成形容器を加熱して前記ラミネ
ート膜のうち前記低融点熱可塑性樹脂内層だけを発泡さ
せ、外表面が平滑な２層構造断熱膜を容器胴部材の少な
くとも一方の壁面上に形成させることを特徴とする容器
の製造方法も提供する。Further, in the present invention, an inner layer of a thermoplastic resin having a low melting point and an outer layer of a thermoplastic resin having a melting point higher than the melting point of the thermoplastic resin are provided on at least one side of the long base paper from the surface side of the paper. A two-layered laminated film consisting of the above, a cylinder member is punched out from the base paper, a container is molded from the cylinder member and a bottom plate member punched from the base paper or another base paper, and then the molded container is heated. Then, only the inner layer of the low melting point thermoplastic resin of the laminate film is foamed, and a two-layer heat insulating film having a smooth outer surface is formed on at least one wall surface of the container body member. It also provides a method.
【００１２】[0012]
【作用】前記のように、本発明の容器では、樹脂層が融
点の異なる２層構造になっているので、内層の発泡によ
り十分な断熱性が得られると共に、外層は発泡せず元の
平滑な表面を維持する。その結果、この２層構造樹脂層
を容器胴部材の内壁面に使用することにより優れた断熱
性紙容器が得られる。このような容器内部に液体を充填
しても、外層フィルムにより液体の浸透あるいは滲出な
どは完全に防止される。また、外層フィルムが平滑で光
沢のある外観を維持するので、容器の美観が損なわれる
ことはない。As described above, in the container of the present invention, since the resin layer has a two-layer structure having different melting points, sufficient heat insulation is obtained by the foaming of the inner layer, and the outer layer does not foam and has the original smoothness. Maintain a smooth surface. As a result, an excellent heat-insulating paper container can be obtained by using this two-layer structure resin layer on the inner wall surface of the container body member. Even if the inside of such a container is filled with the liquid, the permeation or exudation of the liquid is completely prevented by the outer layer film. Moreover, since the outer layer film maintains a smooth and glossy appearance, the aesthetic appearance of the container is not impaired.
【００１３】[0013]
【実施例】以下、図面を参照しながら本発明の容器につ
いて更に詳細に説明する。図１は本発明の容器の一例の
模式的断面図である。図示されているように、本発明の
容器１は本質的に、胴部３と底板部５とからなる。The container of the present invention will be described in more detail below with reference to the drawings. FIG. 1 is a schematic sectional view of an example of the container of the present invention. As shown, the container 1 of the present invention essentially comprises a body 3 and a bottom plate 5.
【００１４】図２は図１においてＡで示された胴部の部
分拡大断面図である。２層構造断熱膜７は容器胴部の内
壁面側に存在する。この２層構造断熱膜７は紙９に接着
されている。２層構造断熱膜７は紙９の表面側から、発
泡した熱可塑性樹脂層１１と非発泡熱可塑性樹脂層１３
とから構成されている。紙９の他方の側、すなわち、胴
部の外壁面側には別の単層熱可塑性樹脂フィルム１５が
被着されている。フィルム１５の存在により、下記で詳
細に説明するように容器製造における加熱処理の際に紙
からの蒸発水分の逃散が防止され、熱可塑性樹脂層１１
の発泡が確実かつ十分に行われる。また、フィルム１５
の存在により、容器の防水性および外観審美性も向上さ
れる。FIG. 2 is a partially enlarged sectional view of the body portion indicated by A in FIG. The two-layer heat insulating film 7 exists on the inner wall surface side of the container body. The two-layer heat insulating film 7 is adhered to the paper 9. The two-layer heat insulating film 7 includes a foamed thermoplastic resin layer 11 and a non-foamed thermoplastic resin layer 13 from the front side of the paper 9.
It consists of and. Another single-layer thermoplastic resin film 15 is attached to the other side of the paper 9, that is, the outer wall surface side of the body. The presence of the film 15 prevents the escape of evaporated water from the paper during the heat treatment in the container manufacturing, as will be described in detail below, and the thermoplastic resin layer 11
The foaming of is performed reliably and sufficiently. Also, film 15
Due to the presence of, the waterproofness and appearance aesthetics of the container are also improved.
【００１５】図３は胴部の別の実施例の部分拡大断面図
である。この実施例では、図２に示された胴部の外壁面
側の熱可塑性樹脂フィルム１５の代わりに、容器胴部の
内壁面側に存在する２層構造断熱膜７と同様な２層構造
断熱膜１５が被着されている。この外側２層構造断熱膜
１５も、紙９の表面側から発泡熱可塑性樹脂層１７と非
発泡熱可塑性樹脂層１９とから構成されている。容器胴
部外壁面上に２層構造断熱膜１５が存在することにより
容器の断熱性が更に大幅に向上される。外側２層構造断
熱膜１５における発泡熱可塑性樹脂層１７と非発泡熱可
塑性樹脂層１９は内側２層構造断熱膜７の発泡熱可塑性
樹脂層１１および非発泡熱可塑性樹脂層１３とそれぞれ
同一であることもできるし、あるいは、異なる素材であ
ることもできる。容器製造上の観点から同一であること
が好ましい。FIG. 3 is a partially enlarged sectional view of another embodiment of the body. In this embodiment, instead of the thermoplastic resin film 15 on the outer wall surface side of the body portion shown in FIG. 2, a two-layer structure heat insulating film similar to the two-layer structure heat insulating film 7 existing on the inner wall surface side of the container body portion is used. Membrane 15 is applied. The outer two-layer heat insulating film 15 is also composed of a foamed thermoplastic resin layer 17 and a non-foamed thermoplastic resin layer 19 from the front side of the paper 9. The presence of the two-layer heat insulating film 15 on the outer wall surface of the container body further significantly improves the heat insulating property of the container. The foamed thermoplastic resin layer 17 and the non-foamed thermoplastic resin layer 19 in the outer two-layer structure heat insulating film 15 are the same as the foamed thermoplastic resin layer 11 and the non-foamed thermoplastic resin layer 13 of the inner two-layer structure heat insulating film 7, respectively. Could be different or could be different materials. The same is preferable from the viewpoint of container production.
【００１６】紙９としては１５０ｇ／ｍ2 〜３００ｇ／
ｍ2 の範囲内の坪量を有する原紙を使用することが好ま
しい。発泡熱可塑性樹脂層１１および１７の膜厚は１０
０〜４００μｍの範囲内であり、非発泡熱可塑性樹脂層
１３および１９の膜厚は１５〜３０μｍの範囲内である
ことが好ましい。As the paper 9, 150 g / m 2 to 300 g /
Preference is given to using base papers having a basis weight in the range m 2 . The film thickness of the foamed thermoplastic resin layers 11 and 17 is 10
The thickness is preferably in the range of 0 to 400 μm, and the film thickness of the non-foamed thermoplastic resin layers 13 and 19 is preferably in the range of 15 to 30 μm.
【００１７】次に本発明の容器の製造方法について説明
する。長尺の原紙をロールから巻出しながら、原紙の片
面に２層構造ラミネート膜を接着する。まず原紙表面側
に発泡熱可塑性樹脂層を形成する内層フィルムをラミネ
ートし、この内層フィルムの上から非発泡熱可塑性樹脂
層を形成する外層フィルムをラミネートする。ラミネー
トは一般的なＴダイによる押出ラミネートで十分であ
り、Ｔダイから共押出ラミネートをすることにより２層
構造ラミネート膜を一度に形成することができる。原紙
の反対側の面には、その後、またはラミネート前あるい
は同時に別の高融点熱可塑性樹脂の単層フィルムを被着
するか、前記２層構造ラミネート膜と同一の、または異
なる２層構造ラミネート膜を接着することができる。原
紙の片面がフィルムによりコートされず地のままだと、
加熱処理の際にこの未被覆面から紙の水分が逃散してし
まい内層フィルムを発泡させることができなくなる。Next, a method of manufacturing the container of the present invention will be described. While unwinding the long base paper from the roll, the two-layer structure laminated film is adhered to one side of the base paper. First, an inner layer film forming a foamed thermoplastic resin layer is laminated on the surface side of the base paper, and an outer layer film forming a non-foamed thermoplastic resin layer is laminated on the inner layer film. A general T-die extrusion lamination is sufficient for the lamination, and a two-layer structure laminated film can be formed at once by performing co-extrusion lamination from the T-die. On the opposite side of the base paper, a single layer film of another high melting point thermoplastic resin is applied thereafter, or before or at the same time as laminating, or a two layer structure laminated film which is the same as or different from the above two layer structure laminated film. Can be glued. If one side of the base paper is not coated with a film and is left as it is,
During the heat treatment, the water content of the paper escapes from the uncoated surface and the inner layer film cannot be foamed.
【００１８】発泡熱可塑性樹脂層を形成する内層フィル
ムの積層時の膜厚、すなわち、発泡前の膜厚は２５〜６
０μｍの範囲内であることが好ましい。非発泡熱可塑性
樹脂層を形成する外層フィルムの膜厚は容器製造の前後
を通じて一般的に変化しないので１５〜３０μｍの範囲
内である。一般的に、内層フィルムの膜厚が外層フィル
ムの膜厚よりも大きいことが好ましい。The film thickness of the inner layer film forming the foamed thermoplastic resin layer when laminated, that is, the film thickness before foaming is 25 to 6
It is preferably within the range of 0 μm. The thickness of the outer layer film forming the non-foamed thermoplastic resin layer is generally within the range of 15 to 30 μm because it generally does not change before and after the container is manufactured. Generally, it is preferable that the film thickness of the inner layer film is larger than the film thickness of the outer layer film.
【００１９】本発明で重要なことは、発泡熱可塑性樹脂
層を形成する内層フィルムの融点または軟化点の方が、
非発泡熱可塑性樹脂層を形成する外層フィルムの融点ま
たは軟化点よりも低いことである。内層フィルムの融点
または軟化点が、外層フィルムの融点または軟化点と同
一または高い場合、発泡熱可塑性樹脂層を形成すること
ができないか、出来たとしても、外層にピンホールやふ
くれなどの欠陥不良部分を多数有する断熱膜になってし
まう。融点または軟化点の差は一般的に、５℃以上ある
ことが好ましい。図２に示すように容器胴部の別の壁面
に単層フィルム１５が接着されている場合には、この単
層フィルム１５と前記内層フィルムとの融点または軟化
点の差も一般的に、５℃以上あることが好ましい。What is important in the present invention is that the melting point or softening point of the inner layer film forming the foamed thermoplastic resin layer is
It is lower than the melting point or softening point of the outer layer film forming the non-foamed thermoplastic resin layer. When the melting point or softening point of the inner layer film is the same as or higher than the melting point or softening point of the outer layer film, the foamed thermoplastic resin layer cannot be formed, or even if it is possible, defect defects such as pinholes and blisters in the outer layer. It becomes a heat insulating film having many parts. Generally, the difference in melting point or softening point is preferably 5 ° C. or higher. When the single layer film 15 is adhered to another wall surface of the container body as shown in FIG. 2, the difference in melting point or softening point between the single layer film 15 and the inner layer film is generally 5 It is preferably at least ° C.
【００２０】２層構造ラミネート膜形成用の熱可塑性樹
脂フィルムおよび図２における単層フィルム１５として
は、例えば、ポリエチレン、ポリプロピレン、ナイロ
ン、塩化ビニリデン、塩化ビニルなどが使用できる。前
記のように、発泡熱可塑性樹脂層を形成する内層フィル
ムと非発泡熱可塑性樹脂層を形成する外層フィルムとは
同一であっても、異なっていてもよい。同一である場
合、密度に差を持たせることにより融点または軟化点に
差を生じさせることができる。このような技術は当業者
に周知である。フィルムとしてはポリエチレンが好まし
い。異なる種類のフィルムを積層させて使用する場合、
フィルム間の接着強度が弱くなることもあるので必要に
応じて接着剤を使用することもできる。As the thermoplastic resin film for forming the two-layer structure laminated film and the single layer film 15 in FIG. 2, polyethylene, polypropylene, nylon, vinylidene chloride, vinyl chloride, etc. can be used, for example. As described above, the inner layer film forming the foamed thermoplastic resin layer and the outer layer film forming the non-foamed thermoplastic resin layer may be the same or different. When they are the same, the melting points or softening points can be made different by making the densities different. Such techniques are well known to those of ordinary skill in the art. Polyethylene is preferred as the film. When laminating different types of films,
Since the adhesive strength between the films may be weakened, an adhesive may be used if necessary.
【００２１】本発明で重要な別の点は、原紙と内層フィ
ルムとの層間強度である。本発明では、この層間強度が
５０〜２００ｇ／１５mm巾の範囲内にあることが好まし
い。層間強度がこの範囲内にある場合、内層フィルムを
十分に発泡させることができるばかりか、容器に成形す
る際の外周と内周の差を吸収することができる。層間強
度が５０ｇ／１５mm巾未満では容器製造中に断熱膜が紙
から剥離してしまうことがある。一方、層間強度が２０
０ｇ／１５mm巾よりも高いと内層フィルムを十分に発泡
させることができず、ピンホールが多数発生する。層間
強度は例えば、Ｔダイからの押出温度および／またはコ
ロナ処理などの手段により容易にコントロールすること
ができる。Another important point in the present invention is the interlayer strength between the base paper and the inner layer film. In the present invention, the interlayer strength is preferably within the range of 50 to 200 g / 15 mm width. When the interlayer strength is within this range, not only the inner layer film can be sufficiently foamed, but also the difference between the outer circumference and the inner circumference at the time of molding into a container can be absorbed. If the interlayer strength is less than 50 g / 15 mm width, the heat insulating film may peel off from the paper during the manufacture of the container. On the other hand, the interlayer strength is 20
If the width is more than 0 g / 15 mm width, the inner layer film cannot be sufficiently foamed and many pinholes are generated. The interlaminar strength can be easily controlled by, for example, the extrusion temperature from the T-die and / or means such as corona treatment.
【００２２】前記のような少なくとも一方の面に２層構
造ラミネート膜が接着された長尺な原紙から容器胴部材
を打ち抜き、同一または別の原紙から底板部材を打ち抜
き、この両部材を常用のカップ製造機にかけてカップに
成形する。別の原紙から底板部材を打ち抜く場合、この
原紙の少なくとも片面には内層フィルムよりも高融点の
フィルムが接着されていることが好ましい。このフィル
ムの存在により容器の防水性が向上される。このような
カップ成形法自体は当業者に周知である。A container body member is punched from a long base paper having a two-layer structure laminated film adhered on at least one surface as described above, and a bottom plate member is punched from the same or another base paper. It is made into a cup by using a manufacturing machine. When the bottom plate member is punched out from another base paper, it is preferable that a film having a melting point higher than that of the inner layer film is bonded to at least one surface of the base paper. The presence of this film improves the waterproofness of the container. Such cup forming method itself is well known to those skilled in the art.
【００２３】次に、この成形カップを加熱する。加熱方
法自体は特に限定されない。例えば、電熱、熱風、スチ
ーム等を用いた加熱トンネルを通過させることにより加
熱処理を行うことができる。加熱源として遠赤外線ヒー
タなどを使用すると、内面へ熱が通りやすいので加熱処
理時間を短縮することができる。加熱温度は発泡熱可塑
性樹脂層を形成するフィルムの融点または軟化点付近の
温度である。従って、この加熱温度は使用する発泡熱可
塑性樹脂層形成フィルムにより変化する。このような温
度は当業者が容易に決定することができる。加熱時間は
加熱温度により左右されるが、一般的には数分間以内で
ある。加熱温度が決まれば最適な加熱時間は実験により
容易に決定することができる。Next, the molding cup is heated. The heating method itself is not particularly limited. For example, the heat treatment can be performed by passing through a heating tunnel using electric heat, hot air, steam or the like. When a far-infrared heater or the like is used as a heating source, heat easily passes to the inner surface, so that the heat treatment time can be shortened. The heating temperature is a temperature near the melting point or softening point of the film forming the foamed thermoplastic resin layer. Therefore, this heating temperature changes depending on the foamed thermoplastic resin layer forming film used. Those skilled in the art can easily determine such temperatures. The heating time depends on the heating temperature, but is generally within a few minutes. If the heating temperature is determined, the optimum heating time can be easily determined by experiment.
【００２４】前記の加熱処理により、紙中に含まれてい
た水分が蒸発し、この蒸発水分により低融点内層フィル
ムが発泡され膜厚が増大した断熱性の発泡熱可塑性樹脂
層が形成される。２層構造ラミネート膜の最表面の外層
フィルムおよび容器胴部の別の壁面に接着されている単
層熱可塑性樹脂フィルムは加熱処理温度よりも高い融点
を有するので殆ど影響を受けない。このため、紙からの
蒸発水分は外層フィルムおよび単層熱可塑性樹脂フィル
ムにより遮断されて内層フィルム内に閉じ込められ、こ
の内層フィルムを完全に均一に発泡させる。容器胴部の
両方の壁面に２層構造ラミネート膜が接着されている場
合には、両方の外層フィルムにより紙からの蒸発水分が
閉じ込められ、両方の内層フィルムが完全に均一に発泡
される。その結果、内層フィルムは優れた断熱性を発揮
すると共に、平滑で光沢のある外観が維持されるばかり
か、全くピンホールのない最外層が得られる。容器胴部
の内壁面および外壁面の両方に前記のような２層構造発
泡断熱膜を有する本発明の容器は従来のＥＰＳカップに
匹敵する断熱性を有することが確認された。By the above-mentioned heat treatment, the water contained in the paper is evaporated, and this evaporated water foams the low melting point inner layer film to form a heat-insulating foamed thermoplastic resin layer. The outermost film of the two-layer structure laminate film and the single-layer thermoplastic resin film adhered to another wall surface of the container body have a melting point higher than the heat treatment temperature and are therefore hardly affected. Therefore, the evaporated water from the paper is blocked by the outer layer film and the single-layer thermoplastic resin film and is confined in the inner layer film, and the inner layer film is completely and uniformly foamed. When the two-layer structure laminated film is adhered to both wall surfaces of the container body, both outer layer films trap the water vapor evaporated from the paper, and both inner layer films are completely and uniformly foamed. As a result, the inner layer film not only exhibits excellent heat insulating properties, but also maintains a smooth and glossy appearance, and at the same time, an outermost layer having no pinhole is obtained. It was confirmed that the container of the present invention having the above-described two-layer foam insulating film on both the inner wall surface and the outer wall surface of the container body has a heat insulating property comparable to that of the conventional EPS cup.
【００２５】[0025]
【発明の効果】以上説明したように、２層構造とするこ
とで外表面には凹凸やピンホールのない平滑で均一な被
膜が存在し、光沢も維持される。また、内層の発泡によ
り十分な断熱性が得られる。内層フィルムの発泡は紙の
水分により行われ、特別な化合物からなる発泡剤は全く
使用しないので飲料用容器として極めて衛生的かつ安全
である。また、内層フィルムの発泡性（あるいは発泡倍
率）はフィルムの膜厚およびフィルムと紙との層間強度
により容易にコントロールすることができる。本発明の
容器は常法通りにラミネートフィルムを紙面に接着させ
て容器に形成した後、単に加熱処理するだけで得られる
ので、製造工程が簡素化されると共に、製造コストも安
価に抑えることができる。本発明の容器全体におけるプ
ラスチックの使用率は１５〜３５wt％程度である。この
ため、使用後の焼却廃棄においても従来のＥＰＳカップ
のような公害問題を引き起こすことがない。As described above, the two-layer structure allows the outer surface to have a smooth and uniform coating without irregularities and pinholes, and to maintain the gloss. Further, sufficient heat insulation is obtained by foaming the inner layer. The foaming of the inner layer film is performed by the water content of the paper, and the foaming agent made of a special compound is not used at all, which is extremely hygienic and safe as a beverage container. Further, the foamability (or expansion ratio) of the inner layer film can be easily controlled by the film thickness of the film and the interlayer strength between the film and the paper. The container of the present invention can be obtained by simply adhering a laminate film to a paper surface to form a container in a conventional manner and then simply heating it, so that the manufacturing process can be simplified and the manufacturing cost can be kept low. it can. The usage rate of the plastic in the whole container of the present invention is about 15 to 35 wt%. Therefore, even after incineration and disposal after use, there is no problem of pollution as in the conventional EPS cup.
【図１】本発明の容器の模式的断面図である。FIG. 1 is a schematic sectional view of a container of the present invention.
【図２】図１における容器胴部のＡで示された部分の拡
大断面図である。FIG. 2 is an enlarged cross-sectional view of a portion indicated by A of the container body in FIG.
【図３】別の実施例の容器胴部の部分拡大断面図であ
る。FIG. 3 is a partially enlarged cross-sectional view of a container body of another embodiment.
【図４】従来の断熱カップの一例の模式的断面図であ
る。FIG. 4 is a schematic cross-sectional view of an example of a conventional heat insulating cup.
【図５】従来の断熱カップの別の例の斜視図である。FIG. 5 is a perspective view of another example of a conventional heat insulating cup.
【図６】従来の断熱カップの他の例の斜視図である。FIG. 6 is a perspective view of another example of a conventional heat insulating cup.
１ 本発明の容器 ３ 胴部 ５ 底板部 ７ 内側２層構造断熱膜 ９ 紙部材 １１ 発泡熱可塑性樹脂層 １３ 非発泡熱可塑性樹脂層 １５ 高融点熱可塑性樹脂フィルム １６ 外側２層構造断熱膜 １７ 発泡熱可塑性樹脂層 １９ 非発泡熱可塑性樹脂層 ２０ 従来の発泡プラスチック製断熱容器 ２２ 底板部 ２４ 胴部 ２６ 把手 ２８ 紙製胴部 ３０ 従来の把手付断熱容器 ３２ コルゲートバンド ３４ 従来の紙製断熱容器 DESCRIPTION OF SYMBOLS 1 Container of this invention 3 Body part 5 Bottom plate part 7 Inner 2 layer structure heat insulation film 9 Paper member 11 Foaming thermoplastic resin layer 13 Non-foaming thermoplastic resin layer 15 High melting point thermoplastic resin film 16 Outer 2 layer structure heat insulating film 17 Foaming Thermoplastic resin layer 19 Non-foamed thermoplastic resin layer 20 Conventional foamed plastic insulation container 22 Bottom plate part 24 Body part 26 Handle 28 Paper body part 30 Conventional insulation container with handle 32 Corrugated band 34 Conventional paper insulation container
Claims (17)
おいて、前記胴部材の少なくとも一方の壁面に、紙の表
面側から低融点の熱可塑性樹脂の発泡内層と該熱可塑性
樹脂の融点よりも高い融点を有する熱可塑性樹脂の非発
泡外層とからなる２層構造断熱膜が被着されていること
を特徴とする容器。1. A paper container comprising a bottom plate member and a body member, wherein a foamed inner layer of a thermoplastic resin having a low melting point and a melting point of the thermoplastic resin are formed on at least one wall surface of the body member from the surface side of the paper. And a non-foamed outer layer of a thermoplastic resin having a high melting point, which is coated with a two-layer heat insulating film.
器を構成する紙に含有されている水分の加熱蒸発により
発泡されたものである請求項１の容器。2. The container according to claim 1, wherein the foamed inner layer of the low melting point thermoplastic resin is foamed by heating and evaporating the moisture contained in the paper constituting the container.
塑性樹脂の融点よりも高い融点を有する熱可塑性樹脂の
薄膜が被着されている請求項１の容器。3. The container according to claim 1, wherein the outer wall surface of the container body member is coated with a thin film of a thermoplastic resin having a melting point higher than that of the low melting point thermoplastic resin.
れている２層構造断熱膜と同じ２層構造断熱膜が被着さ
れている請求項１の容器。4. The container according to claim 1, wherein the outer wall surface of the container body member is coated with the same two-layer heat insulating film as the two-layer heat insulating film attached to the inner wall surface.
脂は同一種類の樹脂である請求項１の容器。5. The container according to claim 1, wherein the low melting point thermoplastic resin and the high melting point thermoplastic resin are the same type of resin.
脂は異なる種類の樹脂である請求項１の容器。6. The container according to claim 1, wherein the low melting point thermoplastic resin and the high melting point thermoplastic resin are different types of resins.
／ｃｍ2 の範囲内であり、低融点熱可塑性樹脂発泡層の
膜厚は１００〜４００μｍの範囲内であり、高融点熱可
塑性樹脂層の膜厚は１５〜３０μｍの範囲内である請求
項１の容器。7. The basis weight of the paper used is 150 to 300 g.
3. The low melting point thermoplastic resin foam layer has a thickness of 100 to 400 μm, and the high melting point thermoplastic resin layer has a thickness of 15 to 30 μm. Container.
度は５０〜２００ｇ／１５mm巾の範囲内である請求項１
の容器。8. The interlayer strength between the paper and the low melting point thermoplastic resin inner layer is in the range of 50 to 200 g / 15 mm width.
Container.
面側から低融点の熱可塑性樹脂の内層と該熱可塑性樹脂
の融点よりも高い融点を有する熱可塑性樹脂の外層とか
らなる２層構造ラミネート膜を被着し、前記原紙から胴
部材を打ち抜き、この胴部材と前記原紙または他の原紙
から打ち抜かれた底板部材とから容器を成形し、その
後、該成形容器を加熱して前記ラミネート膜のうち前記
低融点熱可塑性樹脂内層だけを発泡させ、外表面が平滑
な２層構造断熱膜を容器胴部材の少なくとも一方の壁面
上に形成させることを特徴とする容器の製造方法。9. A two-layer structure comprising, on at least one side of a long base paper, an inner layer of a thermoplastic resin having a low melting point and an outer layer of a thermoplastic resin having a melting point higher than that of the thermoplastic resin from the surface side of the paper. A structural laminate film is applied, a body member is punched out from the base paper, a container is formed from the body member and a bottom plate member punched out from the base paper or another base paper, and then the formed container is heated to form the laminate. A method for producing a container, wherein only the low melting point thermoplastic resin inner layer of the film is foamed to form a two-layer heat insulating film having a smooth outer surface on at least one wall surface of the container body member.
する紙に含有されている水分の加熱蒸発により発泡され
る請求項９の容器の製造方法。10. The method for producing a container according to claim 9, wherein the low melting point thermoplastic resin is foamed by heating and evaporating the water contained in the paper constituting the container.
温度で加熱処理が行われる請求項９の容器の製造方法。11. The method of manufacturing a container according to claim 9, wherein the heat treatment is performed at a temperature near the melting point of the low melting point thermoplastic resin.
点熱可塑性樹脂の融点よりも高い融点を有する熱可塑性
樹脂の薄膜が被着されている請求項９の容器の製造方
法。12. The method of manufacturing a container according to claim 9, wherein the other wall surface of the container body member is coated with a thin film of a thermoplastic resin having a melting point higher than that of the low melting point thermoplastic resin.
面に被着されている２層構造ラミネート膜と同じ２層構
造ラミネート膜が被着されている請求項９の容器の製造
方法。13. The method for producing a container according to claim 9, wherein the other wall surface of the container body member is coated with the same two-layer structure laminated film as the two-layer structure laminated film adhered to one wall surface.
樹脂は同一種類の樹脂である請求項９の容器の製造方
法。14. The method for producing a container according to claim 9, wherein the low melting point thermoplastic resin and the high melting point thermoplastic resin are the same type of resin.
樹脂は異なる種類の樹脂である請求項９の容器の製造方
法。15. The method for producing a container according to claim 9, wherein the low melting point thermoplastic resin and the high melting point thermoplastic resin are different types of resins.
ｇ／ｃｍ2 の範囲内であり、低融点熱可塑性樹脂内層の
膜厚は２５〜６０μｍの範囲内であり、高融点熱可塑性
樹脂外層の膜厚は１５〜３０μｍの範囲内である請求項
９の容器の製造方法。16. The basis weight of the paper used is 150 to 300.
in the range of g / cm 2, the low melting thermoplastic resin layer of the film thickness is in the range of 25～60Myuemu, claim 9 the thickness of the high melting thermoplastic resin outer layer is in the range of 15~30μm Manufacturing method of container.
強度は５０〜２００ｇ／１５mm巾の範囲内である請求項
９の容器の製造方法。17. The method for producing a container according to claim 9, wherein the interlayer strength between the paper and the low melting point thermoplastic resin inner layer is in the range of 50 to 200 g / 15 mm width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21918391A JP3596681B2 (en) | 1991-08-05 | 1991-08-05 | Container and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21918391A JP3596681B2 (en) | 1991-08-05 | 1991-08-05 | Container and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0542929A true JPH0542929A (en) | 1993-02-23 |
| JP3596681B2 JP3596681B2 (en) | 2004-12-02 |
Family
ID=16731503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21918391A Expired - Lifetime JP3596681B2 (en) | 1991-08-05 | 1991-08-05 | Container and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3596681B2 (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06220554A (en) * | 1993-01-22 | 1994-08-09 | Tobata Seisakusho:Kk | Production of wear resistant material |
| JPH10226003A (en) * | 1997-02-14 | 1998-08-25 | Dainippon Printing Co Ltd | Foamed processed paper and its production |
| JPH11189279A (en) * | 1997-08-14 | 1999-07-13 | Sanyo Pax Co Ltd | Body member material for heat-insulating paper container, heat-insulating paper container and manufacture thereof |
| JP2001354226A (en) * | 2000-04-11 | 2001-12-25 | Nissin Food Prod Co Ltd | Heat insulation paper-made container and method for manufacturing it |
| EP1291300A3 (en) * | 2001-09-05 | 2003-08-06 | Energy Storage Technologies, Inc. | Multi-layer core for vacuum insulation panel and insulated container including a vacuum insulation panel |
| JP2003237855A (en) * | 2002-02-20 | 2003-08-27 | Dainippon Printing Co Ltd | Heat-insulating paper cup |
| US6749913B2 (en) | 1998-07-17 | 2004-06-15 | Sanyo Pax Kabushiki Kaisha | Stock material for container body of insulating paper container, insulating paper container and process for making them |
| JP2004299717A (en) * | 2003-03-31 | 2004-10-28 | Dainippon Printing Co Ltd | Heat-insulating container for use in microwave oven |
| KR100565700B1 (en) * | 1997-10-20 | 2006-07-25 | 산요 팍스 가부시키가이샤 | Original block of barrel body for an adiabatic paper container, an adiabatic paper container and a method of manufacturing the container |
| JP2008087783A (en) * | 2006-09-29 | 2008-04-17 | Dainippon Printing Co Ltd | Packaging material and its manufacturing method |
| JP2009220863A (en) * | 2008-03-17 | 2009-10-01 | Dainippon Printing Co Ltd | Heat-insulating vessel for microwave oven and method of manufacturing heat-insulating vessel for microwave oven |
| EP2126210A1 (en) * | 2007-03-16 | 2009-12-02 | Stora Enso Oyj | Board, a method of manfacturing the same and a container made from it |
| JP2010065162A (en) * | 2008-09-11 | 2010-03-25 | Japan Polyethylene Corp | Polyethylene resin composition for expandable laminate, and laminate, expansion processed paper, and heat insulating container using the same, and method for producing the same |
| KR100966160B1 (en) * | 2008-10-21 | 2010-06-25 | 김창수 | The manufacturing method of Insulated paper vessel |
| JP2010208174A (en) * | 2009-03-11 | 2010-09-24 | Act:Kk | Multi-layer sheet for body member of insulating paper container, method of manufacturing the same and insulating paper container |
| KR101139895B1 (en) * | 2010-02-12 | 2012-04-27 | 주식회사 에스제이피 | A manufacturing method of paper container |
| JP2013184729A (en) * | 2012-03-08 | 2013-09-19 | Toppan Printing Co Ltd | Laminate base paper and insulating container using the same |
| JP2014156108A (en) * | 2013-02-18 | 2014-08-28 | Tokan Kogyo Co Ltd | Foaming thermal insulation sheet and foaming insulation container using the same |
| CN105857817A (en) * | 2015-01-21 | 2016-08-17 | 统奕包装股份有限公司 | Heat-insulated container |
| JP2018020512A (en) * | 2016-08-04 | 2018-02-08 | 東罐興業株式会社 | Foam formation heat insulation sheet, molded article using the same, and manufacturing method therefor |
| JP2018058035A (en) * | 2016-10-05 | 2018-04-12 | 大王製紙株式会社 | Method for producing sheet for heat insulating container |
| CN112739625A (en) * | 2018-09-21 | 2021-04-30 | 张开有 | Paper container package and method for manufacturing the same |
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| JP2018058596A (en) * | 2016-09-30 | 2018-04-12 | 大日本印刷株式会社 | Laminated body for heat insulation container, heat insulation container, manufacturing method of laminated body for heat insulation container, and manufacturing method of heat insulation container |
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1991
- 1991-08-05 JP JP21918391A patent/JP3596681B2/en not_active Expired - Lifetime
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06220554A (en) * | 1993-01-22 | 1994-08-09 | Tobata Seisakusho:Kk | Production of wear resistant material |
| JPH10226003A (en) * | 1997-02-14 | 1998-08-25 | Dainippon Printing Co Ltd | Foamed processed paper and its production |
| JPH11189279A (en) * | 1997-08-14 | 1999-07-13 | Sanyo Pax Co Ltd | Body member material for heat-insulating paper container, heat-insulating paper container and manufacture thereof |
| KR100565700B1 (en) * | 1997-10-20 | 2006-07-25 | 산요 팍스 가부시키가이샤 | Original block of barrel body for an adiabatic paper container, an adiabatic paper container and a method of manufacturing the container |
| US6749913B2 (en) | 1998-07-17 | 2004-06-15 | Sanyo Pax Kabushiki Kaisha | Stock material for container body of insulating paper container, insulating paper container and process for making them |
| US6908651B2 (en) | 1998-07-17 | 2005-06-21 | Sanyo Pax Kabushiki Kaisha | Stock material for container body of insulating paper container, insulating paper container and process for making them |
| JP2001354226A (en) * | 2000-04-11 | 2001-12-25 | Nissin Food Prod Co Ltd | Heat insulation paper-made container and method for manufacturing it |
| JP4528431B2 (en) * | 2000-04-11 | 2010-08-18 | 日清食品ホールディングス株式会社 | Insulating paper container and method for producing the same |
| EP1291300A3 (en) * | 2001-09-05 | 2003-08-06 | Energy Storage Technologies, Inc. | Multi-layer core for vacuum insulation panel and insulated container including a vacuum insulation panel |
| JP2003237855A (en) * | 2002-02-20 | 2003-08-27 | Dainippon Printing Co Ltd | Heat-insulating paper cup |
| JP2004299717A (en) * | 2003-03-31 | 2004-10-28 | Dainippon Printing Co Ltd | Heat-insulating container for use in microwave oven |
| JP2008087783A (en) * | 2006-09-29 | 2008-04-17 | Dainippon Printing Co Ltd | Packaging material and its manufacturing method |
| EP2126210A1 (en) * | 2007-03-16 | 2009-12-02 | Stora Enso Oyj | Board, a method of manfacturing the same and a container made from it |
| EP2126210A4 (en) * | 2007-03-16 | 2012-08-22 | Stora Enso Oyj | Board, a method of manfacturing the same and a container made from it |
| JP2009220863A (en) * | 2008-03-17 | 2009-10-01 | Dainippon Printing Co Ltd | Heat-insulating vessel for microwave oven and method of manufacturing heat-insulating vessel for microwave oven |
| JP2010065162A (en) * | 2008-09-11 | 2010-03-25 | Japan Polyethylene Corp | Polyethylene resin composition for expandable laminate, and laminate, expansion processed paper, and heat insulating container using the same, and method for producing the same |
| KR100966160B1 (en) * | 2008-10-21 | 2010-06-25 | 김창수 | The manufacturing method of Insulated paper vessel |
| JP2010208174A (en) * | 2009-03-11 | 2010-09-24 | Act:Kk | Multi-layer sheet for body member of insulating paper container, method of manufacturing the same and insulating paper container |
| KR101139895B1 (en) * | 2010-02-12 | 2012-04-27 | 주식회사 에스제이피 | A manufacturing method of paper container |
| JP2013184729A (en) * | 2012-03-08 | 2013-09-19 | Toppan Printing Co Ltd | Laminate base paper and insulating container using the same |
| JP2014156108A (en) * | 2013-02-18 | 2014-08-28 | Tokan Kogyo Co Ltd | Foaming thermal insulation sheet and foaming insulation container using the same |
| CN105857817A (en) * | 2015-01-21 | 2016-08-17 | 统奕包装股份有限公司 | Heat-insulated container |
| JP2018020512A (en) * | 2016-08-04 | 2018-02-08 | 東罐興業株式会社 | Foam formation heat insulation sheet, molded article using the same, and manufacturing method therefor |
| JP2018058035A (en) * | 2016-10-05 | 2018-04-12 | 大王製紙株式会社 | Method for producing sheet for heat insulating container |
| CN112739625A (en) * | 2018-09-21 | 2021-04-30 | 张开有 | Paper container package and method for manufacturing the same |
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| JP3596681B2 (en) | 2004-12-02 |
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