JP2002315672A - Paper cup for microwave oven - Google Patents
Paper cup for microwave ovenInfo
- Publication number
- JP2002315672A JP2002315672A JP2001125487A JP2001125487A JP2002315672A JP 2002315672 A JP2002315672 A JP 2002315672A JP 2001125487 A JP2001125487 A JP 2001125487A JP 2001125487 A JP2001125487 A JP 2001125487A JP 2002315672 A JP2002315672 A JP 2002315672A
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- JP
- Japan
- Prior art keywords
- paper cup
- annular
- vicinity
- annular curl
- microwave oven
- 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.)
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Links
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- Package Specialized In Special Use (AREA)
- Cookers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子レンジによる
加熱調理が可能な紙カップに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper cup which can be heated and cooked by a microwave oven.
【０００２】[0002]
【従来の技術】紙カップは、一般的には、例えば図４、
図５に示すように、扇形状の胴紙の一方の端縁をもう一
方の端縁に重ね合わせて接合させ、下方に向かって先細
る円筒形状の胴部材とする胴部材形成工程（ａ）、別に
底部材用ロールからほぼ円形状に打ち抜かれた底紙を外
周縁部を下向きに起立させて底部材とする底部材形成工
程（ｂ）、胴部材の下部内面に底部材の外周縁部の内面
を接合させる接合工程（ｃ）、さらに外周縁部を覆うよ
うに前記胴部材の下端縁部を内方に折り曲げ、底部材の
外周縁部の外面に接合させて環状脚部（２４）が形成さ
れる環状脚部形成工程（ｄ）、最後に胴部材の上部周縁
を外方に向けて巻き込み、口縁部（２３）を形成させる
口縁部形成工程（ｅ）の各工程を経て、胴部（２１）と
底部（２２）を有する紙カップ（２０）を作製してい
る。2. Description of the Related Art Paper cups are generally constructed as shown in FIG.
As shown in FIG. 5, a body member forming step (a) in which one edge of the fan-shaped body paper is overlapped and joined to the other edge to form a cylindrical body member that tapers downward. A bottom member forming step in which a bottom paper punched out from a bottom member roll into a substantially circular shape is formed by erecting the outer peripheral edge downward, thereby forming a bottom member; and (b) an outer peripheral edge of the bottom member on the lower inner surface of the body member (C) joining the inner surfaces of the torso, and further bending the lower edge of the body member inward so as to cover the outer peripheral edge, and joining the outer edge of the outer peripheral edge of the bottom member to form an annular leg (24). Is formed, and finally, the upper peripheral edge of the body member is wound outward to form an edge portion (23). A paper cup (20) having a body (21) and a bottom (22).
【０００３】そして、この紙カップに液状の内容物を充
填して電子レンジにかけて加熱調理を行うと電磁誘導に
よるカップの底部周辺の端面の焦げが問題となる。これ
は電磁波の集中による蓄熱に起因すると推定されてい
る。[0003] When the paper cup is filled with a liquid content and cooked in a microwave oven, there is a problem that the end face around the bottom of the cup is scorched by electromagnetic induction. This is presumed to be due to heat storage due to the concentration of electromagnetic waves.
【０００４】また、実験上カップの底部周辺の端面が焦
げないようにするためには、環状脚部の高さを３ｍｍ程
度以下にしなければならないことが分かっている。通常
の紙カップは環状脚部の高さを４〜１０ｍｍ程度にして
いるので、通常の紙カップに内容物を入れて電子レンジ
加熱調理を行うと紙カップの底部周辺の端面は焦げてし
まうことになる。[0004] In experiments, it has been found that the height of the annular leg must be less than about 3 mm in order to prevent the end face around the bottom of the cup from scorching. Since the height of the annular leg of a normal paper cup is about 4 to 10 mm, if the contents are put into the normal paper cup and microwave cooking is performed, the end surface around the bottom of the paper cup will be scorched.
【０００５】従来の紙カップ成形法で環状脚部の高さを
３ｍｍ以下にして成形することも可能である。しかし、
この場合には、環状脚部の有効接着幅は２ｍｍ程度ない
しそれ以下になってしまう。このような接着状態では電
子レンジによる内容物の高温度化、対流、さらには油分
を含む内容物の場合等を考慮すると、この接着幅では電
子レンジ加熱することにより内容物に滲み、漏れ等が発
生し易い。[0005] It is also possible to reduce the height of the annular leg to 3 mm or less by a conventional paper cup molding method. But,
In this case, the effective bonding width of the annular leg is about 2 mm or less. In such an adhesive state, when the temperature of the content is raised by a microwave oven, convection, and the case of the content containing oil, etc. are considered, the microwave is heated in the adhesive width, and the content bleeds into the content, leakage, etc. Easy to occur.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、紙カップ
に、例えば、即席麺に水を加える等して電子レンジで加
熱調理を行う際に生じ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、電子レンジによる加熱調理が可
能な紙カップを提供することを課題とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems which occur when cooking in a microwave oven by, for example, adding water to instant noodles in a paper cup. It is an object of the present invention to provide a paper cup which can be heated and cooked by a microwave oven.
【０００７】[0007]
【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
した口縁部を有する紙カップであって、胴部と底部の接
合部分の周縁は内側にカールした環状カール部が形成さ
れると共に、環状カール部の近傍を除いた底部は平坦
で、底部の環状カール部近傍は盆縁状に盛り上がり、環
状カール部近傍を除いた底部より高く形成され、環状カ
ール部の下縁と環状カール部近傍を除いた底部との段差
を３ｍｍ以下にしたことを特徴とする電子レンジ用紙カ
ップである。According to a first aspect of the present invention, there is provided a paper cup comprising a body and a bottom, the periphery of which is curled outward. An annular curl part curled inside is formed on the periphery of the joining part, and the bottom part except for the vicinity of the circular curl part is flat, the part near the circular curl part at the bottom rises like a tray edge, except for the part near the circular curl part And a step formed between the lower edge of the annular curled portion and the bottom excluding the vicinity of the annular curled portion to have a height of 3 mm or less.
【０００８】このように、胴部と底部の接合部分の周縁
は内側にカールした環状カール部が形成されると共に、
環状カール部の近傍を除いた底部は平坦で、底部の環状
カール部近傍は盆縁状に盛り上がり、環状カール部近傍
を除いた底部より高く形成され、環状カール部の下縁と
環状カール部近傍を除いた底部との段差を以下にしてい
るので、電子レンジによる加熱調理を行っても、紙カッ
プの底部の周縁の端面が焦げたりすることがない。[0008] As described above, the periphery of the joining portion between the body and the bottom is formed with an annular curl portion curled inward.
The bottom except for the vicinity of the annular curl is flat, the vicinity of the annular curl at the bottom rises like a tray edge, and is formed higher than the bottom except for the vicinity of the annular curl, and the lower edge of the annular curl and the vicinity of the annular curl The height difference between the bottom and the bottom of the paper cup is set as follows, so that even if heating and cooking is performed by a microwave oven, the peripheral edge of the bottom of the paper cup does not burn.
【０００９】また、胴部と底部の接合部分の周縁は胴部
材と底部材を完全に接着した後に内側にカールした環状
カール部を形成させているので、胴部と底部は完全に接
着され、内容物が漏れたり染みだしたりすることがな
い。[0009] Further, since the peripheral edge of the joint portion between the body and the bottom is formed into an annular curled portion curled inward after the body and the bottom are completely bonded, the body and the bottom are completely bonded. The contents do not leak or seep out.
【００１０】請求項２の発明は、請求項１の発明におい
て、前記胴部と底部は、カップ原紙の少なくとも内面
に、耐熱性ポリオレフィン系樹脂を塗布したポリオレフ
ィン系樹脂加工紙からなることを特徴とする電子レンジ
用紙カップである。A second aspect of the present invention is characterized in that, in the first aspect of the present invention, the body and the bottom are made of a polyolefin resin processed paper obtained by applying a heat resistant polyolefin resin to at least the inner surface of a cup base paper. Microwave paper cup.
【００１１】このように、紙カップの胴部と底部は、カ
ップ原紙の少なくとも内面に耐熱性ポリオレフィン系樹
脂を塗布したポリオレフィン系樹脂加工紙からなるの
で、好適な成形性を有すると共に、電子レンジ耐性を有
する紙カップが成形できる。As described above, since the body and bottom of the paper cup are made of a polyolefin-based resin-coated paper obtained by applying a heat-resistant polyolefin-based resin to at least the inner surface of the cup base paper, the paper cup has suitable moldability and has a microwave oven resistance. Can be formed into a paper cup.
【００１２】[0012]
【発明の実施の形態】本発明の電子レンジ用紙カップを
一実施形態に基づいて以下に詳細に説明する。図１は、
本発明の電子レンジ用紙カップの一実施例を示す断面図
であり、図２は、図１のＡ部の拡大説明図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A microwave oven paper cup according to the present invention will be described below in detail based on one embodiment. FIG.
FIG. 2 is a cross-sectional view showing an embodiment of the microwave oven paper cup of the present invention, and FIG. 2 is an enlarged explanatory view of a portion A in FIG.
【００１３】本発明の電子レンジ用紙カップは、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）を有する紙カップである。
そして、胴部（１１）と底部（１２）の接合部分の周縁
は内側にカールした環状カール部（１４）が形成されて
いる。The microwave paper cup of the present invention is a paper cup comprising a body (11) and a bottom (12), and having an edge (13) whose outer periphery is curled outward.
An annular curl (14) curled inward is formed at the periphery of the joint between the body (11) and the bottom (12).
【００１４】また、環状カール部の近傍を除いた底部
（１２）は平坦で、底部の環状カール部近傍は盆縁状に
盛り上がり、環状カール部近傍を除いた底部より高く形
成され、環状カール部の下縁と環状カール部近傍を除い
た底部との段差（ｄ）を３ｍｍ以下にした電子レンジ用
紙カップ（１０）である。The bottom (12) except for the vicinity of the annular curl portion is flat, the vicinity of the annular curl portion at the bottom rises like a tray edge, and is formed higher than the bottom except for the vicinity of the annular curl portion. A microwave paper cup (10) in which the step (d) between the lower edge of the bottom and the bottom excluding the vicinity of the annular curl portion is 3 mm or less.
【００１５】紙カップに使用する材料は、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１５０〜３００ｇ／ｍ2 程度のカップ原紙の両
面または片面に、ポリエチレン樹脂、ポリプロピレン樹
脂などのポリオレフィン系樹脂を１０〜５０μｍ程度塗
布したポリオレフィン系樹脂加工紙を用いることが一般
的である。また、底部材の総厚と胴部材の総厚とを同じ
にしても良いが、底部材の総厚を胴部材の総厚より３割
程度減らすことにより、胴部材と底部材との接合部分の
成形性が向上する。The material used for the paper cup is the body (11)
And the bottom member forming the bottom portion (12), a polyolefin-based resin such as a polyethylene resin or a polypropylene resin is coated on both sides or one side of a cup base paper having a basis weight of about 150 to 300 g / m 2 for about 10 to 50 μm. It is common to use a coated polyolefin resin processed paper. Further, the total thickness of the bottom member and the total thickness of the body member may be the same. However, by reducing the total thickness of the bottom member by about 30% from the total thickness of the body member, the joint portion between the body member and the bottom member is reduced. The moldability of the is improved.
【００１６】口縁部（１３）は、図示はしていないが、
上下方向に押しつぶした偏平な口縁部としても良い。The rim (13) is not shown, but
It may be a flat edge crushed in the vertical direction.
【００１７】この紙カップの成形は、前述の一般的な紙
カップ成形工程において、円筒形状の胴部材の下部内面
に、底部材の外周縁部の内面を接合させた接合工程の後
に、環状脚部形成工程の代わりに、接合部分を内方に向
けて巻き込み環状カール部を作製する脚部巻き込み工程
（ｆ）と、環状カール部の近傍を除いた底部を平面状に
加工する底部加圧工程（ｇ）を設けることにより成形で
きる（図３参照）。This paper cup is formed by forming the annular leg portion after the joining process in which the inner surface of the outer peripheral edge of the bottom member is joined to the inner surface of the lower portion of the cylindrical body member in the above-described general paper cup forming process. Instead of the step, a leg winding step (f) in which the joining portion is turned inward to form an annular curl part, and a bottom pressing step (g) in which the bottom excluding the vicinity of the annular curl part is processed into a planar shape ) Can be formed (see FIG. 3).
【００１８】このようにして作製した紙カップに内容物
を入れて電子レンジで加熱調理しても、環状カール部の
下縁と環状カール部近傍を除いた底部との段差（ｄ）が
３ｍｍ以下にしてあるので、底部周辺の端面には焦げが
生ぜず、内容物のもれや滲みのない紙カップとなる。Even if the contents are put into the paper cup thus prepared and cooked in a microwave oven, the step (d) between the lower edge of the circular curl portion and the bottom excluding the vicinity of the circular curl portion is reduced to 3 mm or less. As a result, the end face around the bottom is not scorched and the paper cup has no leakage or bleeding of the contents.
【００１９】[0019]
【実施例】以下実施例により本発明をさらに詳細に説明
する。 〈実施例１〉先ず、胴部を形成する胴部材として坪量２
７０ｇ／ｍ2 のカップ原紙の内面側に厚さ３０μｍの低
密度ポリエチレン樹脂を塗布した総厚みが０．３２ｍｍ
のポリエチレン加工紙を、また、底部を形成する底部材
として坪量２１０ｇ／ｍ2 のカップ原紙の内面側に厚さ
２０μｍの低密度ポリエチレン樹脂を塗布した総厚みが
０．２３ｍｍのポリエチレン加工紙を、それぞれ準備し
た。The present invention will be described in more detail with reference to the following examples. <Example 1> First, a basis weight of 2 was used as a body member forming a body part.
70 g / m 2 cup base paper coated with low-density polyethylene resin of 30 μm thickness on the inner surface side has a total thickness of 0.32 mm
And a low-density polyethylene resin having a total thickness of 0.23 mm obtained by applying a low-density polyethylene resin having a thickness of 20 μm to the inner surface side of a cup base paper having a basis weight of 210 g / m 2 as a bottom member forming the bottom. , Each prepared.
【００２０】ついで、一般的な紙カップ成形機を一部改
造した紙カップ成形機を用いて、上述の胴部材形成工
程、底部材形成工程、接合工程、脚部巻き込み工程、底
部加圧工程、口縁部形成工程を経て、ポリエチレンを内
側にした、高さ；１０６．９ｍｍ、口径；９４．４ｍ
ｍ、底径；６４．３ｍｍ、環状カール部口径；３．８ｍ
ｍ、環状カール部下縁と環状カール部近傍を除いた底部
との段差；２．３ｍｍ、テーパー角度；６．５°の、実
施例１の電子レンジ用紙カップを作製した。Then, using a paper cup molding machine which is a partially modified general paper cup molding machine, the above-described body member forming step, bottom member forming step, joining step, leg winding step, bottom pressing step, edge Through a part forming step, polyethylene was placed inside, height: 106.9 mm, diameter: 94.4 m
m, bottom diameter: 64.3 mm, annular curl diameter: 3.8 m
m, a step between the lower edge of the annular curl portion and the bottom excluding the vicinity of the annular curl portion; 2.3 mm; a taper angle: 6.5 °;
【００２１】〈比較例１〉実施例１と同じ胴部材、底部
材を用いて、従来通りの環状脚部を有する実施例１と同
じ寸法の紙カップを一般的な紙カップ成形機を用いて作
製し、比較例１の紙カップとした。なお、環状脚部の高
さは１０ｍｍである。<Comparative Example 1> Using the same body member and bottom member as in Example 1, a paper cup having the same size as that of Example 1 having a conventional annular leg was produced using a general paper cup molding machine. And the paper cup of Comparative Example 1. The height of the annular leg is 10 mm.
【００２２】こうして作製した実施例１種類、比較例１
種類、合計２類の紙カップの電子レンジ適性を下記する
方法により評価した。その結果を表１い示す。 電子レンジ適性‥ 試料の紙カップに内容物（水）を充
填し、出力１５００ワットの家庭用電子レンジにて４分
間（過剰条件）加熱し、脚部のコゲの状態を目視観察
し、コゲの発生したものを電子レンジ適性なしとした ○ ‥ 電子レンジ適性あり × ‥ 電子レンジ適性なしExample 1 thus produced, Comparative Example 1
The suitability of the two types of paper cups for the microwave oven was evaluated by the following method. The results are shown in Table 1. Microwave oven suitability Fill the contents (water) into a paper cup of the sample and heat it for 4 minutes (excess condition) in a household microwave oven with 1500 watts output, visually observe the state of the kogation on the legs, and generate kogation. Not suitable for microwave oven ○ あ り Suitable for microwave oven × ‥ Not suitable for microwave oven
【００２３】[0023]
【表１】 [Table 1]
【００２４】この結果から、環状カール部下縁と環状カ
ール部近傍を除いた底部との段差を３ｍｍ以下にした実
施例１の紙カップは、電子レンジで加熱しても底部周辺
の端面は焦げることがなく、内容物のもれや滲みもない
ことが分かった。From the above results, it can be seen that the paper cup of Example 1 in which the step between the lower edge of the annular curl portion and the bottom excluding the vicinity of the annular curl portion was 3 mm or less, even when heated in a microwave oven, the end surface around the bottom was scorched. It was found that there was no leakage or bleeding of the contents.
【００２５】[0025]
【発明の効果】上記のように、カップ胴部の下縁と底面
との段差を３ｍｍ以下にすることにより、電子レンジで
加熱しても底部周辺の端面は焦げることがなく、内容物
のもれや滲みもない電子レンジ適性を有する紙カップが
作製できた。As described above, by setting the step between the lower edge and the bottom surface of the cup body to 3 mm or less, the end surface around the bottom portion is not scorched even when heated in a microwave oven, and the content of the contents can be reduced. A paper cup having microwave oven suitability without bleeding or bleeding was produced.
【図１】本発明の電子レンジ用紙カップの一例を示す、
断面説明図である。FIG. 1 shows an example of a microwave paper cup of the present invention.
It is sectional explanatory drawing.
【図２】図１のＡ部の拡大説明図である。FIG. 2 is an enlarged explanatory view of a portion A in FIG. 1;
【図３】本発明の紙カップの製造工程の一例を示す、模
式説明図である。FIG. 3 is a schematic explanatory view showing one example of a manufacturing process of the paper cup of the present invention.
【図４】従来の紙カップの一例を示す部分断面説明図で
ある。FIG. 4 is a partial cross-sectional explanatory view showing an example of a conventional paper cup.
【図５】従来の紙カップの一般的な製造工程の一例を示
す、模式説明図である。FIG. 5 is a schematic explanatory view showing an example of a general manufacturing process of a conventional paper cup.
１０、２０‥‥紙カップ １１、２１‥‥胴部 １２、２２‥‥底部 １３、２３‥‥口縁部 １４‥‥環状脚部 ２４‥‥環状カール部 ｄ‥‥段差 10, 20 ‥‥ paper cup 11, 21 ‥‥ trunk 12, 22 ‥‥ bottom 13, 23 ‥‥ lip 14 ‥‥ annular leg 24 ‥‥ annular curl d ‥‥ step
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4B055 AA10 BA01 CA02 CB02 CB03 DB15 ──────────────────────────────────────────────────続 き Continued on front page F-term (reference) 4B055 AA10 BA01 CA02 CB02 CB03 DB15
Claims (2)
にカールした口縁部を有する紙カップであって、胴部と
底部の接合部分の周縁は内側にカールした環状カール部
が形成されると共に、環状カール部の近傍を除いた底部
は平坦で、底部の環状カール部近傍は盆縁状に盛り上が
り、環状カール部近傍を除いた底部より高く形成され、
環状カール部の下縁と環状カール部近傍を除いた底部と
の段差を３ｍｍ以下にしたことを特徴とする電子レンジ
用紙カップ。1. A paper cup comprising a body and a bottom, wherein a peripheral edge of an opening is curled outward, and a peripheral edge of a joining portion between the body and the bottom is formed into an annular curled part curled inward. At the same time, the bottom except for the vicinity of the annular curl portion is flat, the vicinity of the annular curl portion at the bottom rises like a tray edge, and is formed higher than the bottom excluding the vicinity of the annular curl portion,
A microwave paper cup, wherein a step between a lower edge of the annular curl portion and a bottom portion excluding the vicinity of the annular curl portion is 3 mm or less.
も内面に、耐熱性ポリオレフィン系樹脂を塗布したポリ
オレフィン系樹脂加工紙からなることを特徴とする請求
項１記載の電子レンジ用紙カップ。2. The microwave oven paper cup according to claim 1, wherein the body and the bottom are made of a polyolefin resin processed paper obtained by applying a heat-resistant polyolefin resin to at least the inner surface of the cup base paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001125487A JP3945182B2 (en) | 2001-04-24 | 2001-04-24 | Microwave paper cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001125487A JP3945182B2 (en) | 2001-04-24 | 2001-04-24 | Microwave paper cup |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002315672A true JP2002315672A (en) | 2002-10-29 |
| JP3945182B2 JP3945182B2 (en) | 2007-07-18 |
Family
ID=18974701
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001125487A Expired - Fee Related JP3945182B2 (en) | 2001-04-24 | 2001-04-24 | Microwave paper cup |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003095352A (en) * | 2001-09-21 | 2003-04-03 | Tokan Kogyo Co Ltd | Paper container to be heated in microwave oven and manufacturing method thereof |
| JP2014061896A (en) * | 2012-09-20 | 2014-04-10 | Toppan Printing Co Ltd | Cup-shaped paper container |
-
2001
- 2001-04-24 JP JP2001125487A patent/JP3945182B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003095352A (en) * | 2001-09-21 | 2003-04-03 | Tokan Kogyo Co Ltd | Paper container to be heated in microwave oven and manufacturing method thereof |
| JP2014061896A (en) * | 2012-09-20 | 2014-04-10 | Toppan Printing Co Ltd | Cup-shaped paper container |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3945182B2 (en) | 2007-07-18 |
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