JP4135391B2 - Paper insulation cup - Google Patents
Paper insulation cup Download PDFInfo
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- JP4135391B2 JP4135391B2 JP2002120272A JP2002120272A JP4135391B2 JP 4135391 B2 JP4135391 B2 JP 4135391B2 JP 2002120272 A JP2002120272 A JP 2002120272A JP 2002120272 A JP2002120272 A JP 2002120272A JP 4135391 B2 JP4135391 B2 JP 4135391B2
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Description
【0001】
【発明の属する技術分野】
本発明は、即席麺などを収容する紙製の断熱カップに関し、特には、熱湯を注いでそのまま飲食することの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カップ本体と紙製筒体とから構成される紙製の断熱カップに関する。
【0002】
【従来の技術】
従来、即席麺などの収容物に熱湯を注いで食する断熱性容器としては、例えば、発泡ポリスチレン樹脂などを成形したプラスチック容器、耐水加工した紙カップ本体の周壁の外側に波状紙を貼着し、さらに、波状紙の上から薄紙を貼着して空気断熱層を形成させた紙容器などが知られている。
【0003】
ところが、材質に発泡プラスチック樹脂を使用する容器は断熱性には優れているものの、燃焼カロリーが高く、焼却、廃棄上の問題があり、さらには消費者の環境意識の高まりに伴う消費行動の変化により発泡樹脂に代わる易廃棄性、易燃焼性の容器が求められている。
【0004】
また、紙カップに波状紙や薄紙を巻き付け貼着して空気断熱層を形成させた紙容器は、断熱性に問題ないものの、接着剤を使用しているために糊付け工程が必要になる。
【0005】
これらの問題を解決した断熱容器として、例えば、特開2000−326951号公報に開示された発明がある。
【0006】
この発明は、図5に示すように、紙製筒体(120)の下部は、内方へ曲がる彎曲部(121)が成形され、筒体を紙カップ本体(110)の胴部(111)に嵌め込み、彎曲部を形成させた筒体(120)の下端は紙カップ本体胴部の下縁の環状脚部(114)の外面に固定され、筒体の上端は胴部の口縁部(113)の下端に接触して固定され、紙カップ本体胴部(111)と紙製筒体(120)の間に断熱空間層(130)を設けたことを特徴とするものである。
【0007】
このように、接着剤を使用せずに断熱空間層を設けたので、断熱効果に問題はないものの、紙製筒体を加圧およびまたは加熱加圧により彎曲部(121)を形成させているため、彎曲部(121)の下端が絞られて放射状にしわが発生し、見栄えが良くないという問題がある。
【0008】
【発明が解決しようとする課題】
本発明は、紙カップ本体と、紙カップ本体の胴部外側に嵌め込まれる紙製筒体とから構成される紙製断熱カップに関する以上のような問題点を解決するためになされたもので、外から見て見栄えの良い紙製断熱カップを提供することを課題とする。
【0009】
【課題を解決するための手段】
本発明の請求項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し、胴部と底部の接合部に環状脚部を形成させた紙カップ本体と、紙カップ本体の胴部外側に嵌め込まれる紙製筒体とから構成される紙製断熱カップであって、紙製筒体の下部は、断面形状が逆N字状に曲げられた折り曲げ部が、紙製筒体を紙カップ本体に嵌め込んだ際環状脚部が隠れるように形成させ、該筒体を紙カップ本体の胴部に嵌め込み、折り曲げ部を形成させた紙製筒体の先端部分は紙カップ本体胴部の下縁の環状脚部の外面に固定され、筒体の上端は胴部の口縁部の下縁に接触して固定され、紙カップ本体胴部と紙製筒体の間に断熱空間層を設けたことを特徴とする紙製断熱カップである。
【0010】
このように請求項1記載の発明によれば、紙製筒体の下部には、断面形状が逆N字状に曲げられた折り曲げ部が、紙製筒体を紙カップ本体に嵌め込んだ際環状脚部が隠れるように形成させているので、放射状のシワがなく、外から見て見栄えの良い紙製断熱カップである。
【0013】
また、請求項2の発明は、請求項1の発明において、前記紙製筒体の上部に、内方に折り曲げた折り込み部を形成させたことを特徴とする、紙製断熱カップである。
【0014】
このように請求項2記載の発明によれば、紙製筒体の上部に、内方に折り曲げた折り込み部を形成させることにより、紙カップ本体胴部と紙製筒体の間の断熱空間層を厚くすることができる。
【0015】
【発明の実施の形態】
本発明の紙製断熱カップを一実施形態に基づいて以下に詳細に説明する。
本発明の紙製断熱カップは、例えば、図1に示すように、胴部(11)と底部(12)とからなり、開口部周縁が外側にカールした口縁部(13)を有し、胴部と底部の接合部に環状脚部(14)を形成させた紙カップ本体(10)と、紙カップ本体の胴部外側に嵌め込まれる紙製筒体(20)とから構成される紙製断熱カップ(1)である。
【0016】
そして、紙製筒体(20)の下部には、断面形状が逆N字状に曲げられた折り曲げ部(21)が形成されている。
【0017】
紙カップ本体(10)は、胴部(11)を形成する胴部材、底部(12)を形成する底部材とも、坪量が170〜310g/m2 程度のカップ原紙の両面、又は片面に低密度ポリエチレン樹脂を20〜40μm程度塗布したポリエチレン加工紙を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。
【0018】
紙製筒体(20)は、坪量が250〜380g/m2 程度のコートボール、白ライナー、カップ原紙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所定寸法の略扇形に打ち抜き、紙製筒地ブランクを作製する。
なお、カップ原紙を使用すると、パルプが伸び易く、成形性に富むので後記する折り曲げ部(21)が成形し易い。
【0019】
ついで、紙製筒体ブランクの両端を重ね合わせ、例えば、エチレン・酢酸ビニール樹脂系のエマルジョン型接着剤を介在させて接着させ、筒状に加工する。
【0020】
筒状に加工された筒体を雄雌型を使用して加圧およびまたは加熱加圧成形して筒体の下部に、断面形状が逆N字状に曲げられた折り曲げ部(21)を有する紙製筒体(20)とする。
なお、この折り曲げ部(21)は、紙製筒体を紙カップ本体に嵌め込んだ際環状脚部が隠れるように形成させる必要がある。このことにより、紙カップを外から見た際、外観が綺麗に見える。
【0021】
断面形状が逆N字状の折り曲げ部(21)の詳細な作製方法を述べるならば、例えば、図3に示すように、先ず、底面周縁が逆N字状に加工されたマンドレル(NM)に紙製筒体(20)を嵌め込み、内折り込み型(U)を回転させながらマンドレル(NM)に押しつける。このことにより、紙製筒体(20)の底部周縁を内方にくせおりする(図3(a)参照)。
【0022】
つぎのユニットでは、底成形雌型(S)をマンドレル(NM)の底部に回転させながら押しつけ、紙製筒体の下端周縁を逆N字状に仕上げる(図3(b)参照)。
【0023】
また、つぎのユニットで、下端周縁が逆N字状に形成された紙製筒体(20)をマンドレル(NM)から引き抜き、筒体受け型(TU)に嵌め込み、トップインカール型(TI)を回転させながら紙製筒体の上端周縁に押しつけ、紙製筒体の上端周縁を内側に折り込む(図3(c)、図3(d)参照)。
【0024】
最後のユニットでは、カールかしめ型(K)で紙製筒体の上端縁を押さえて固定し、成形加工を施した紙製筒体とする。(図3(e)参照)。
【0025】
この紙製筒体の上部は、図3(a)〜(e)に示すように、内方に折り曲げた折り込み部(24)を形成させても良い。
このための余白をあらかじめ紙製筒体のブランクに設定しておく必要があることはいうまでもない。
また、各型は必要に応じて加熱してある。
【0026】
紙製筒体(20)の紙カップ本体(10)への嵌め込みは、例えば、つぎのようにして行う。すなわち、紙カップ本体を底の方から紙製筒体の中に嵌め込み、紙製筒体(20)の上端は紙カップ本体口縁部の下に接触させて固定し、あるいは、口縁部(13)の下端の胴部外面に固定させ、紙製筒体の先端部分(22)は、紙カップ本体胴部の下縁の環状脚部(14)の外面に固定され、紙製筒体の上端(23)は胴部の口縁部(13)の下縁に接触して固定させ、本発明の紙製断熱カップとする。なお、紙カップ本体胴部と紙製筒体の間には断熱空間層(30)が設けられる。
【0027】
紙製筒体と紙カップ本体の固定方法は、紙製筒体の上端と先端部分のどちらか一方または両方を紙カップ本体と、例えば、エチレン・酢酸ビニール共重合樹脂系のエマルジョン型接着剤で接着させる方法が確実である。
【0028】
図2は、参考例の紙製断熱カップを示す部分断面説明図である。図2は、図1の紙製断熱カップのうち紙製筒体の折り曲げ部の形態を変えたものである。簡単に説明する。
【0029】
すなわち、紙製筒体(40)の下部に形成される環状脚部(14)を隠す折り曲げ部(41)が、逆P字状に形成されており、紙製筒体を紙カップ本体の胴部に嵌め込んだとき、逆P字状の折り曲げ部の中間部分(43)が紙カップ本体の胴部外面に固定されると共に、逆P字状の折り曲げ部の先端部分(42)は、紙製筒体の内面に接着されている紙製断熱カップ(2)である。
【0030】
逆P字状の折り曲げ部(41)の形成方法はつぎの通りである。
断面形状が逆P字状の折り曲げ部(41)の詳細な作製方法を述べるならば、例えば、図4に示すように、先ず、マンドレル(M)に紙製筒体(20)を嵌め込み、紙製筒体(20)の下端(図4では上端)の内側周縁に接着剤(45)をスプレー等で塗布する(図4(a)参照)。
【0031】
つぎのユニットでは、トップインカール型(TI)を回転させながらマンドレル(M)の底部に押しつけ、紙製筒体(20)の下周縁を内側に折り曲げる(図4(b)参照)。
【0032】
またつぎのユニットでは、外側ホルダ(SH)で紙製筒体(20)の下側周縁を固定しながらシールジョー(SJ)を紙製筒体(20)の折り曲げた下部周縁の内側にあてがい、紙製筒体の下端を内方に押しつけ、加熱加圧して逆P字状の折り曲げ部(41)を形成させる(図4(c)参照)。
【0033】
【発明の効果】
上記のように、本発明の紙製断熱カップは、紙製筒体の絞られてシワが発生してしまう部分を紙カップ本体と紙製筒体の間に折り込み露出しないように形成してあるので、印刷効果が上がり、美しくなる。
【図面の簡単な説明】
【図1】 本発明の紙製断熱カップの一実施例を示す、部分断面説明図である。
【図2】 参考例の紙製断熱カップを示す、部分断面説明図である。
【図3】 (a)〜(e)は逆N字状の折り曲げ部の作製工程を模式的に示す、説明図である。
【図4】 (a)〜(c)は逆P字状の折り曲げ部の作製工程を模式的に示す、説明図である。
【図5】 従来の紙製断熱カップの一例を示す、部分断面説明図である。
1、2‥‥紙製断熱カップ
10‥‥紙カップ本体
11‥‥胴部
12‥‥底部
13‥‥口縁部
14‥‥環状脚部
20‥‥紙製筒体
21‥‥折り曲げ部
22‥‥紙製筒体の先端部分
23‥‥紙製筒体の上端
24‥‥折り込み部
30‥‥断熱空間層
40‥‥紙製筒体
41‥‥折り曲げ部
42‥‥紙製筒体の先端部分
43‥‥紙製筒体の中間部分
45‥‥接着剤
110‥‥紙カップ本体
111‥‥胴部
113‥‥口縁部
114‥‥環状脚部
120‥‥紙製筒体
121‥‥彎曲部
130‥‥断熱空間層
NM‥‥逆N字状マンドレル
U‥‥内折り込み型
S‥‥底成形雌型
TU‥‥筒体受け型
TI‥‥トップインカール型
K‥‥かしめ型
M‥‥マンドレル
SH‥‥外側ホルダ
SJ‥‥シールジョー[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper heat-insulating cup for storing instant noodles and the like, and in particular, comprises a so-called instant food or instant beverage paper cup body and a paper tube body that can be poured into hot water and eaten as it is. This relates to a heat insulating cup made of paper.
[0002]
[Prior art]
Conventionally, as an insulating container that pours hot water into a container such as instant noodles and eats, for example, a plastic container formed of foamed polystyrene resin or the like, a corrugated paper is attached to the outside of the peripheral wall of a water-resistant processed paper cup body, Furthermore, a paper container or the like in which an air heat insulating layer is formed by sticking thin paper on wavy paper is known.
[0003]
However, although containers made of plastic foam resin are excellent in heat insulation, they have high calorie burns, have problems with incineration and disposal, and changes in consumer behavior due to increased consumer environmental awareness Therefore, there is a demand for easily disposable and easily combustible containers instead of foamed resins.
[0004]
In addition, although a paper container in which a corrugated paper or thin paper is wound and pasted on a paper cup to form an air insulation layer has no problem in heat insulation, an adhesive is used, and therefore a gluing step is required.
[0005]
As an insulated container that solves these problems, for example, there is an invention disclosed in Japanese Unexamined Patent Publication No. 2000-326951.
[0006]
In the present invention, as shown in FIG. 5, a bent portion (121) that bends inward is formed at the lower portion of the paper cylinder (120), and the cylinder is formed on the body portion (111) of the paper cup body (110). The lower end of the cylindrical body (120) that is fitted and bent is fixed to the outer surface of the annular leg (114) at the lower edge of the paper cup body trunk, and the upper end of the cylindrical body is the mouth edge (113) of the trunk. The heat insulating space layer (130) is provided between the paper cup main body (111) and the paper cylinder (120).
[0007]
As described above, since the heat insulating space layer is provided without using an adhesive, there is no problem in the heat insulating effect, but the curved portion (121) is formed by pressurizing and / or heating and pressurizing the paper cylinder. Therefore, there is a problem that the lower end of the bent portion (121) is squeezed and wrinkles are generated radially, which is not good in appearance.
[0008]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-described problems relating to a paper heat insulating cup composed of a paper cup main body and a paper cylinder fitted into the outer side of the body portion of the paper cup main body. It is an object to provide a heat-insulating cup made of paper that looks good.
[0009]
[Means for Solving the Problems]
The invention of
[0010]
As described above, according to the first aspect of the present invention, the bent portion whose cross-sectional shape is bent in an inverted N shape is formed at the lower portion of the paper tube body when the paper tube body is fitted into the paper cup body. Since the legs are formed so as to be hidden, there is no radial wrinkle, and it is a paper heat insulation cup that looks good from the outside.
[0013]
A second aspect of the present invention is the paper heat insulating cup according to the first aspect of the present invention, wherein a folded portion bent inward is formed on an upper portion of the paper cylinder.
[0014]
As described above, according to the invention described in
[0015]
DETAILED DESCRIPTION OF THE INVENTION
The paper heat insulating cup of the present invention will be described in detail below based on one embodiment.
The paper heat insulating cup of the present invention, for example, as shown in FIG. 1, includes a body (11) and a bottom (12), and has a mouth edge (13) whose opening periphery is curled outwardly, A paper heat insulating cup composed of a paper cup body (10) having an annular leg (14) formed at the joint between the body and the bottom, and a paper cylinder (20) fitted outside the body of the paper cup body. (1).
[0016]
And the bending part (21) by which the cross-sectional shape was bent by the reverse N character shape is formed in the lower part of the paper-made cylinder (20).
[0017]
The paper cup body (10) has a low density on both sides or one side of a cup base paper having a basis weight of about 170 to 310 g / m 2 , both of the trunk member forming the trunk section (11) and the bottom member forming the bottom section (12). Polyethylene processed paper coated with about 20 to 40 μm of polyethylene resin can be produced using a general paper cup molding machine.
[0018]
The paper cylinder (20) is a substantially sector shape having a predetermined size with a size covering the body of the paper cup body using a paperboard such as a coated ball, a white liner, and a cup base paper having a basis weight of about 250 to 380 g / m 2. To make a paper tube blank.
In addition, when a cup base paper is used, since a pulp is easy to extend and it is rich in a moldability, the bending part (21) mentioned later is easy to shape | mold.
[0019]
Next, both ends of the paper cylinder blank are overlapped and bonded with, for example, an ethylene / vinyl acetate resin emulsion adhesive, and processed into a cylinder.
[0020]
A cylinder processed into a cylindrical shape is pressed and / or heat-pressed using a male and female mold, and has a bent portion (21) whose cross-sectional shape is bent into an inverted N shape at the bottom of the cylinder. Let it be a paper cylinder (20).
The bent portion (21) needs to be formed so that the annular leg portion is hidden when the paper tube is fitted into the paper cup body. This makes the appearance look beautiful when the paper cup is viewed from the outside.
[0021]
If the detailed manufacturing method of the bending part (21) whose cross-sectional shape is an inverted N shape is described, for example, as shown in FIG. The paper cylinder (20) is fitted and pressed against the mandrel (NM) while rotating the inner folding mold (U). As a result, the bottom peripheral edge of the paper cylinder (20) is inward (see FIG. 3A).
[0022]
In the next unit, the bottom molding female die (S) is pressed against the bottom of the mandrel (NM) while being rotated, and the bottom edge of the paper cylinder is finished in an inverted N shape (see FIG. 3B).
[0023]
Also, in the next unit, the paper cylinder (20) whose lower end peripheral edge is formed in an inverted N shape is pulled out from the mandrel (NM) and fitted into the cylinder receiving mold (TU), and the top incurled mold (TI) Is pressed against the upper edge of the paper cylinder, and the upper edge of the paper cylinder is folded inward (see FIGS. 3C and 3D).
[0024]
In the last unit, the upper end edge of the paper cylinder is pressed and fixed with a curl caulking die (K) to form a paper cylinder that has been subjected to a molding process. (See FIG. 3 (e)).
[0025]
As shown in FIGS. 3A to 3E, the upper portion of the paper cylinder may be formed with a folded portion (24) bent inward.
Needless to say, it is necessary to set a blank for this purpose in advance in a blank of the paper cylinder.
Each mold is heated as necessary.
[0026]
The paper tube body (20) is fitted into the paper cup body (10), for example, as follows. That is, the paper cup body is fitted into the paper tube body from the bottom, and the upper end of the paper tube body (20) is fixed in contact with the bottom edge of the paper cup body, or the edge portion (13). The front end portion (22) of the paper cylinder is fixed to the outer surface of the annular leg (14) at the lower edge of the paper cup main body, and the upper end (23 ) Is in contact with and fixed to the lower edge of the mouth lip (13) of the body portion to obtain the paper heat insulating cup of the present invention. A heat insulating space layer ( 30 ) is provided between the paper cup body barrel and the paper cylinder.
[0027]
The paper tube body and the paper cup body are fixed by adhering either or both of the upper end and the tip of the paper tube body to the paper cup body with, for example, an ethylene-vinyl acetate copolymer resin emulsion adhesive. The method is certain.
[0028]
Figure 2 is a partial sectional view showing a paper insulation cup of Reference Example. FIG. 2 shows the paper heat insulating cup shown in FIG. 1 with a changed shape of the bent portion of the paper cylinder. Briefly described.
[0029]
That is, the bent portion (41) for concealing the annular leg portion (14) formed at the lower portion of the paper tube body (40) is formed in an inverted P-shape, and the paper tube body is a body portion of the paper cup body. The intermediate portion (43) of the inverted P-shaped bent portion is fixed to the outer surface of the body portion of the paper cup body and the tip portion (42) of the inverted P-shaped bent portion is It is the paper heat insulation cup (2) adhere | attached on the inner surface of the body.
[0030]
The method for forming the inverted P-shaped bent portion (41) is as follows.
If the detailed manufacturing method of the bending part (41) whose cross-sectional shape is an inverted P-shape is described, for example, as shown in FIG. 4, first, the paper cylinder (20) is fitted into the mandrel (M), and the paper An adhesive (45) is applied to the inner periphery of the lower end (upper end in FIG. 4) of the cylindrical body (20) by spraying or the like (see FIG. 4 (a)).
[0031]
In the next unit, the top incurle mold (TI) is pressed against the bottom of the mandrel (M) while rotating, and the lower peripheral edge of the paper cylinder (20) is bent inward (see FIG. 4B).
[0032]
In the next unit, the seal jaw (SJ) is applied to the inside of the lower peripheral edge of the paper cylinder (20) while the lower peripheral edge of the paper cylinder (20) is fixed by the outer holder (SH). The lower end of the paper cylinder is pressed inward and heated and pressed to form an inverted P-shaped bent portion (41) (see FIG. 4C).
[0033]
【The invention's effect】
As described above, paper insulation cup of the present invention is to form a throttled and wrinkles occur Mau portions of paper tube body so as not to fold exposed between the paper cup body and paper cylindrical body As a result, the printing effect is improved and it becomes beautiful.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional explanatory view showing an embodiment of a paper heat insulating cup of the present invention.
FIG. 2 is a partial cross-sectional explanatory view showing a paper heat insulating cup of a reference example .
FIGS. 3A to 3E are explanatory views schematically showing a manufacturing process of an inverted N-shaped bent portion. FIGS.
FIGS. 4A to 4C are explanatory views schematically showing a manufacturing process of an inverted P-shaped bent portion. FIGS.
FIG. 5 is a partial cross-sectional explanatory view showing an example of a conventional paper heat insulating cup.
1, 2, ... Paper heat-insulating
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2002120272A JP4135391B2 (en) | 2002-04-23 | 2002-04-23 | Paper insulation cup |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2002120272A JP4135391B2 (en) | 2002-04-23 | 2002-04-23 | Paper insulation cup |
Publications (2)
Publication Number | Publication Date |
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JP2003312635A JP2003312635A (en) | 2003-11-06 |
JP4135391B2 true JP4135391B2 (en) | 2008-08-20 |
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JP2002120272A Expired - Fee Related JP4135391B2 (en) | 2002-04-23 | 2002-04-23 | Paper insulation cup |
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JP (1) | JP4135391B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008026984A1 (en) * | 2008-05-28 | 2009-12-03 | Ptm Packaging Tools Machinery Pte.Ltd. | Outer jacket for a double-walled cup and method of manufacture |
JP2015081144A (en) * | 2013-10-23 | 2015-04-27 | 株式会社生駒化学工業 | Heat insulation cup |
-
2002
- 2002-04-23 JP JP2002120272A patent/JP4135391B2/en not_active Expired - Fee Related
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