JP2010260554A

JP2010260554A - Lid material with hot water draining hole

Info

Publication number: JP2010260554A
Application number: JP2009110519A
Authority: JP
Inventors: Atsuhiko Takeda; 淳彦武田
Original assignee: Dai Nippon Printing Co Ltd
Current assignee: Dai Nippon Printing Co Ltd
Priority date: 2009-04-30
Filing date: 2009-04-30
Publication date: 2010-11-18
Anticipated expiration: 2029-04-30
Also published as: JP5257228B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lid material with a hot water draining hole which is used for a container to drip hot water after the container is kept naturally after pouring hot water over noodle such as instant noodle, in which the hot water draining hole can be formed without cutting off a separated outer lid when forming the hot water draining hole, and a hot-water drip operation can be safely executed. <P>SOLUTION: The lid material is composed of an outer lid and an inner lid having an unsealing knob and a hot water draining hole forming knob, the outer lid and the inner lid are laminated on each other via an adhesive resin layer, and the lid material is heat-bonded to an opening of the container for use. The lid material has an easily-peelable area between the outer lid and the inner lid, and a non-peelable area via a boundary. A plurality of hot-water drip hole cuts are formed in the easily peelable area, and continuous to one another across a boundary, and corrugated cuts penetrating the inner lid are formed therein. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、カップ入り焼きそば、スパゲッティ等の即席食品のように、麺に熱湯を注いで一定時間放置した後、湯切りを行う容器に使用する湯切り孔付き蓋材に関する。 TECHNICAL FIELD The present invention relates to a lid material with a hot water cut hole used for a container for pouring hot water after pouring hot water into noodles and leaving it for a certain period of time like instant foods such as cupped fried noodles and spaghetti.

従来、カップ入り焼きそばは、発泡ポリスチレン等からなる容器に焼きそばを収納し、湯切り孔となる切込が形成されたプラスチック成形蓋が被せられ、全体を収縮フィルムにて収縮包装した包装形態のものや、発泡ポリスチレン等からなる容器に焼きそばを収納し、湯切り孔形成手段を備えた紙とプラスチックフィルムとの積層体ないしは紙とアルミニウム箔の積層体からなる蓋材を容器に熱接着して取り付け、全体を収縮フィルムにて収縮包装した包装形態のもの等が広く知られている。後者の湯切り孔形成手段を備えた積層体からなる蓋材としては、外蓋と内蓋とが剥離手段を介して接着樹脂層により積層された構成からなり、外蓋には外蓋切目線が形成され、この蓋材が容器の開口部に取り付けられた包装体の湯切り孔形成用摘みを掴んで蓋材を剥離することにより、外蓋を部分的に剥離させて外蓋切目線にて切り取ることができ、簡単に内蓋に湯切り孔を形成させて湯切りを行うことができる構成が知られている（例えば、特許文献１参照）。 Traditionally, fried noodles with cups are packaged in such a way that fried noodles are stored in a container made of expanded polystyrene, etc., covered with a plastic molding lid with cuts to form hot water cutting holes, and the whole is shrink-wrapped with a shrink film. Or fried soba noodles in a container made of foamed polystyrene, etc., and a lid with a laminate of paper and plastic film or a laminate of paper and aluminum foil with hot water hole forming means is attached to the container by thermal bonding In addition, a packaging form in which the whole is shrink-wrapped with a shrink film is widely known. The lid member made of a laminate provided with the latter hot water hole forming means has a configuration in which an outer lid and an inner lid are laminated with an adhesive resin layer via a peeling means, and the outer lid has a cut line on the outer lid. The lid is gripped by a handle for forming a hot water cut hole in the package attached to the opening of the container, and the lid is peeled off, so that the outer lid is partially peeled and the outer lid is cut. There is known a configuration in which a hot water cutting hole can be easily formed by forming a hot water hole in the inner lid (see, for example, Patent Document 1).

しかしながら、上記の湯切り孔付き蓋材では、外蓋切目線に沿って部分的に剥離された外蓋を蓋材から切り離すので、切り離された外蓋はゴミになるという問題点があった。また、外蓋には外蓋切目線を形成する工程が必要であり工程の簡略化も望まれていた。これらの課題を改善した技術として、表面シートと複合シートが接着剤層で積層されてなり、該表面シートと複合シートの層間に、剥離剤の塗布による易剥離領域と、該易剥離領域と境界で隣接して配置された接着領域とに区分されている排湯機能を有する蓋材が提案されている（例えば、特許文献２参照）。この技術により、表面シートが、易剥離領域では容易に剥離され、接着領域との境界でこの剥離が止まり易くなり、ここで剥離された表面シートが折り曲げられるために剥離された表面シートが蓋材から切り離されることがなくゴミにならなくなった。しかしながら、剥離されて折り曲げられた表面シートは、表面シートの剛性で折り曲げられた部分が元の折り曲げる前の状態に戻ろうとするために湯切り時に湯切り孔が見え難くなり、安心して湯切り動作ができないことがあるという問題がある。また、著しい場合には火傷をするという危惧もある。 However, the lid member with a hot water cut hole has a problem that the outer lid partially peeled along the outer lid cut line is separated from the lid member, so that the separated outer lid becomes garbage. In addition, a process for forming an outer cover cut line is required for the outer cover, and simplification of the process has been desired. As a technique for solving these problems, a surface sheet and a composite sheet are laminated with an adhesive layer, and an easy peeling region by applying a release agent between the surface sheet and the composite sheet, and a boundary between the easy peeling region and the surface. A lid material having a function of draining hot water that is divided into adhering regions arranged adjacent to each other has been proposed (for example, see Patent Document 2). With this technology, the surface sheet is easily peeled off in the easy peeling region, and this peeling is likely to stop at the boundary with the adhesive region, and the peeled surface sheet is folded so that the peeled surface sheet is the lid material. It is no longer separated from trash. However, the peeled and folded face sheet makes it difficult to see the hot water hole when hot water is cut because the part of the face sheet that has been bent due to the rigidity of the face sheet will return to its original state. There is a problem that sometimes cannot be. There is also the risk of burns if it is significant.

特開２００２−９６８７９号公報JP 2002-96879 A 特開２００５−１０４５１４号公報JP-A-2005-104514

本発明は、上記のような従来の問題点に鑑み、即席麺等のように、麺に熱湯を注いで一定時間放置した後、湯切りを行う容器に使用する湯切り孔付き蓋材において、湯切り口形成に際し、剥離された外蓋を切取ることなく、湯切り口が形成でき、剥離され折り曲げられた外蓋が元に戻ることを防止し安心して湯切り動作ができる湯切り孔付き蓋材を提供するものである。 In view of the conventional problems as described above, the present invention, like instant noodles, etc., after pouring hot water into noodles and leaving them for a certain period of time, in a lid material with a hot water cut hole used for a container for hot water cutting, When forming the hot water cut opening, the hot water cut opening can be formed without cutting off the peeled outer lid, and the peeled and bent outer cover can be prevented from returning to the original, and the lid with a hot water cut hole can be operated safely. Is to provide.

上記課題を解決するために、請求項１に記載の本発明は、外周縁の対向する位置に外方に突出する開封用摘み部と湯切り孔形成用摘み部を備えた少なくとも紙層を有する外蓋と少なくとも最内層に熱接着性樹脂層を有する内蓋とからなり、前記外蓋と前記内蓋とが接着樹脂層を介して積層された構成からなり、容器の開口部に蓋材熱接着部により熱接着して使用される蓋材であって、前記湯切り孔形成用摘み部より開封用摘み部に向かって、前記外蓋と前記内蓋との間に剥離剤層を備えた易剥離領域と、該易剥離領域に境界線を介して隣接する非剥離領域とを有し、前記易剥離領域内には複数個の湯切り口形状の前記内蓋を貫通する湯切り孔切目が形成され、前記湯切り孔形成用摘み部の内側に前記蓋材熱接着部にかかるように前記内蓋を貫通する剥離開始用切目線が形成されるとともに、前記境界線を跨ぐように連続し前記内蓋を貫通する波形状切目が形成されていることを特徴とする湯切り孔付き蓋材とするものである。 In order to solve the above-mentioned problem, the present invention according to claim 1 has at least a paper layer provided with an opening knob and a hot water hole forming knob protruding outward at positions opposed to the outer peripheral edge. It consists of an outer lid and an inner lid having at least an innermost heat-adhesive resin layer, and the outer lid and the inner lid are laminated via an adhesive resin layer. A lid member that is used by being thermally bonded by an adhesive portion, and includes a release agent layer between the outer lid and the inner lid from the hot water hole forming knob toward the opening knob. There is an easy peeling area and a non-peeling area adjacent to the easy peeling area via a boundary line, and there are a plurality of hot water cut hole cuts penetrating the inner lid in the shape of the hot water cut opening in the easy peeling area. The inner lid penetrates the lid material thermal bonding portion inside the hot water hole forming knob. In this case, a lid material with a hot water cut hole is formed, in which a slit line for peeling start is formed, and a wave-shaped cut is formed so as to pass through the inner lid so as to straddle the boundary line. is there.

また、請求項２に記載の本発明は、請求項１に記載の湯切り孔付き蓋材において、前記波形状切目が、前記境界線と前記蓋材熱接着部の内側縁との交点間であって少なくとも両端部と中央部に形成されていることを特徴とするものであり、請求項３に記載の本発明は、請求項１に記載の湯切り孔付き蓋材において、前記波形状切目が、前記境界線と前記蓋材熱接着部の内側縁との交点間であって全長さに亘って形成されていることを特徴とするものである。 Moreover, the present invention according to claim 2 is the lid member with a hot water cut hole according to claim 1, wherein the corrugated cut is between the intersections of the boundary line and the inner edge of the lid heat bonding portion. In addition, the present invention is characterized in that it is formed at least at both ends and a central portion, and the present invention according to claim 3 is the corrugated cut in the lid member with a hot water cut hole according to claim 1. Is formed between the intersection of the boundary line and the inner edge of the lid heat-bonding portion and over the entire length.

また、請求項４に記載の本発明は、請求項１〜３のいずれかに記載の湯切り孔付き蓋材において、前記外蓋が、外面側から２軸延伸フィルムからなる表面層と前記紙層が順に積層された構成からなることを特徴とするものである。 Moreover, the present invention according to claim 4 is the lid member with a hot water cut hole according to any one of claims 1 to 3, wherein the outer lid is a surface layer made of a biaxially stretched film from the outer surface side and the paper. It has a structure in which layers are sequentially stacked.

また、請求項５に記載の本発明は、請求項１〜４のいずれかに記載の湯切り孔付き蓋材において、前記内蓋が、前記熱接着性樹脂層からなる最内層とアルミニウム箔層が積層された構成からなることを特徴とするものである。 Moreover, this invention of Claim 5 is a lid | cover material with a hot-water hole in any one of Claims 1-4, The innermost layer and aluminum foil layer in which the said inner cover consists of the said thermoadhesive resin layer It is characterized by comprising a laminated structure.

請求項１に記載の発明によれば、外周縁の対向する位置に外方に突出する開封用摘み部と湯切り孔形成用摘み部を備えた少なくとも紙層を有する外蓋と少なくとも最内層に熱接着性樹脂層を有する内蓋とからなり、外蓋と内蓋とが接着樹脂層を介して積層された構成からなり、容器の開口部に蓋材熱接着部により熱接着して使用される蓋材であって、湯切り孔形成用摘み部より開封用摘み部に向かって、外蓋と内蓋との間に剥離剤層を備えた易剥離領域と、該易剥離領域に境界線を介して隣接する非剥離領域とを有し、易剥離領域内には複数個の湯切り口形状の内蓋を貫通する湯切り孔切目が形成され、湯切り孔形成用摘み部の内側に蓋材熱接着部にかかるように内蓋を貫通する剥離開始用切目線が形成されるとともに、前記境界線を跨ぐように連続し前記内蓋を貫通する波形状切目が形成されている構成の湯切り孔付き蓋材とすることにより、該蓋材が容器の開口部に取り付けられた包装体の湯切り孔形成用摘み部を摘んで蓋材を剥離すると、易剥離領域では外蓋が容易に剥離されて、隣接する非剥離領域との境界線で剥離が止まり、部分的に剥離された外蓋は境界線で折り曲げることができ、簡単に湯切り孔を形成させて湯切りを行うことできる。このように、部分的に剥離された外蓋は蓋材から切り離すことがないのでゴミとなることがなく、しかも、波形状切目が境界線を跨ぐように形成されているために剥離された状態において波形状切目と境界線とで囲まれた内側部分が外蓋に接着した状態で折り曲げられることになり折り曲げられた外蓋の形状が元に戻ることなく形状が保持されているので湯切り孔が見え難くならず、且つ湯切り孔が塞がれることがないので安心して湯切り動作ができるという効果がある。また、外蓋には従来のような切目線を形成する必要がなく、工程の簡略化が図れ、また、外蓋表面に傷が入らないので高意匠性を付与するものである。 According to the first aspect of the present invention, an outer lid having at least a paper layer provided with a picking knob for opening outwardly and a knob for forming a hot water hole at a position opposite to the outer peripheral edge, and at least an innermost layer. It consists of an inner lid with a heat-adhesive resin layer, and consists of a structure in which an outer lid and an inner lid are laminated via an adhesive resin layer. An easy-peeling region having a release agent layer between the outer lid and the inner lid, and a boundary line in the easy-peeling region. And a non-peeling region adjacent to each other, and in the easy-peeling region, a plurality of hot water cut-shaped slits penetrating through the inner lid of the hot water cut-off shape are formed, and a lid is formed inside the hot water cut-hole forming knob. A peeling start score line penetrating the inner lid is formed so as to cover the material thermal bonding portion, and the boundary line is straddled. For forming a hot water cut hole in a packaging body in which the cover material is attached to the opening of the container. When the lid is peeled off by picking the knob, the outer lid is easily peeled off in the easy peeling area, and the peeling stops at the boundary line with the adjacent non-peeling area, and the partially peeled outer lid is at the boundary line. It can be bent, and a hot water cutting hole can be easily formed to perform hot water cutting. In this way, the partially peeled outer lid is not separated from the lid material so that it does not become dust, and it is peeled off because the wavy cut is formed so as to straddle the boundary line In this case, the inner part surrounded by the corrugated cut line and the boundary line is folded in a state where it is adhered to the outer lid, and the shape of the folded outer lid is maintained without returning to the original shape, so the hot water cutting hole Is not difficult to see, and the hot water cutting hole is not blocked. Further, it is not necessary to form a cut line as in the conventional case on the outer lid, the process can be simplified, and the outer lid surface is not damaged, so that a high design property is imparted.

また、請求項２記載の発明によれば、波形状切目が、境界線と蓋材熱接着部の内側縁との交点間であって少なくとも両端部と中央部に形成されている構成とすることにより部分的に剥離され折り曲げられた外蓋の形状が元に戻ることなく安定して保持されるという効果がある。さらに、請求項３記載の発明によれば、波形状切目が、境界線と蓋材熱接着部の内側縁との交点間の全長さに亘って形成されている構成とすることにより部分的に剥離され折り曲げられた外蓋の形状が元に戻ることなく折り曲げられた状態で保持されより優れた形状保持機能を有する効果がある。 According to the invention described in claim 2, the wave-shaped cuts are formed between the intersections of the boundary line and the inner edge of the lid heat bonding portion, and are formed at least at both ends and the central portion. Thus, there is an effect that the shape of the outer lid partially peeled off and bent is stably held without returning to the original shape. Furthermore, according to the invention described in claim 3, the corrugated cut is partially formed by forming the entire length between the intersection points of the boundary line and the inner edge of the lid heat bonding portion. The peeled and bent outer lid is held in a folded state without returning to its original shape, and has an effect of having a better shape holding function.

また、請求項４記載の発明によれば、外蓋の積層構成を外面側から２軸延伸フィルムからなる表面層と紙層が順に積層された構成とすることにより、外蓋を部分的に剥離し折り曲げることにより波形状切目で囲まれた内蓋に孔が形成され、該孔より立ちのぼる湯気が紙層に触れ、紙層が吸湿することにより外蓋が２軸延伸フィルムからなる表面層側に引張られるようにカールするために外蓋の形状がより元に戻ることがない。 According to the invention of claim 4, the outer lid is partially peeled off by forming the laminated structure of the outer lid from the outer surface side in such a manner that the surface layer made of the biaxially stretched film and the paper layer are sequentially laminated. A hole is formed in the inner lid surrounded by the corrugated cut by bending, and the steam rising from the hole touches the paper layer, and the paper layer absorbs moisture, so that the outer lid is on the surface layer side made of the biaxially stretched film. Since the outer lid is curled so as to be pulled, the shape of the outer lid does not return more.

また、請求項５記載の発明によれば、内蓋の積層構成を外蓋側からアルミニウム箔層と熱接着性樹脂層からなる最内層とが順に積層された構成とすることにより、外蓋を部分的に剥離し折り曲げることにより、波形状切目で囲まれた内側の内蓋部分が外蓋に接着した状態で折り曲げられることになり、アルミニウム箔の塑性変形するという特性により折り曲げられた外蓋の形状保持が優れたものとなる。 According to the invention of claim 5, the inner lid is configured by laminating the aluminum foil layer and the innermost layer made of the heat-adhesive resin layer in this order from the outer lid side. By partially peeling and bending, the inner lid part surrounded by the corrugated cut is folded in a state where it is adhered to the outer lid, and the outer lid folded due to the characteristic of plastic deformation of the aluminum foil. The shape retention is excellent.

本発明にかかる湯切り孔付き蓋材を容器の開口部に接着した状態の一実施形態を示す平面図である。It is a top view which shows one Embodiment of the state which adhere | attached the cover material with a hot-water hole concerning this invention on the opening part of the container. 図１のＸ−Ｘ線断面図である。It is the XX sectional view taken on the line of FIG. 本発明にかかる湯切り孔付き蓋材の一実施形態の湯切り孔を形成した状態を示す断面図である。It is sectional drawing which shows the state which formed the hot water cutting hole of one Embodiment of the cover material with a hot water cutting hole concerning this invention. 本発明にかかる湯切り孔付き蓋材の他の実施形態を示す平面図であって、湯切り孔形成用摘み部から境界線に至る部分を示す部分平面図である。It is a top view which shows other embodiment of the lid | cover material with a hot water cut hole concerning this invention, Comprising: It is a partial top view which shows the part from the knob part for hot water cut hole formation to a boundary line.

以下図面を用いて、本発明の実施形態について説明する。図１は本発明にかかる湯切り孔付き蓋材を容器の開口部に接着した状態の一実施形態を示す平面図、図２は図１におけるＸ−Ｘ線断面図、図３は本発明にかかる湯切り孔付き蓋材の一実施形態の湯切り孔を形成した状態を示す断面図であって図２に対応する断面図、図４は本発明にかかる湯切り孔付き蓋材の他の実施形態を示す図１に対応する平面図であって、湯切り孔形成用摘み部から境界線に至る部分を示す部分平面図である。図中の符号１、１’は湯切り孔付き蓋材、２は容器、２ａはフランジ部、３は開封用摘み部、４は湯切り孔形成用摘み部、５は蓋材熱接着部、６は湯切り孔切目、７は剥離開始用切目線、８、８’は波形状切目、８ａは孔、９は湯切り孔、１１は外蓋、１２は剥離剤層、１３は紙層、２１は内蓋、２２はアルミニウム箔層、２３は熱接着性樹脂層、３１は接着樹脂層、Ｂは境界線、Ｉは境界線と蓋材熱接着部の内側縁との交点、Ｎは非剥離領域、Ｐは易剥離領域、ｃは交点間の中央部、ｅは交点間の端部、αは戻り角度をそれぞれ示す。 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing an embodiment of a state in which a lid member with a scoring hole according to the present invention is bonded to an opening of a container, FIG. 2 is a sectional view taken along line XX in FIG. 1, and FIG. It is sectional drawing which shows the state which formed the hot water cutting hole of one Embodiment of this lid member with a hot water hole, Comprising: FIG. 4 is sectional drawing corresponding to FIG. 2, FIG. It is a top view corresponding to FIG. 1 which shows embodiment, Comprising: It is a fragmentary top view which shows the part from the knob part for hot water cut hole formation to a boundary line. In the figure, reference numerals 1 and 1 ′ are lid materials with hot water cut holes, 2 is a container, 2a is a flange portion, 3 is a picking portion for opening, 4 is a pick portion for forming hot water cut holes, and 5 is a heat bonding portion for lid material. 6 is a cut line for hot water cut, 7 is a cut line for starting peeling, 8 and 8 'are wavy cut lines, 8a is a hole, 9 is a hot water cut hole, 11 is an outer lid, 12 is a release agent layer, 13 is a paper layer, 21 is an inner lid, 22 is an aluminum foil layer, 23 is a heat-adhesive resin layer, 31 is an adhesive resin layer, B is a boundary line, I is an intersection of the boundary line and the inner edge of the lid heat bonding portion, and N is non- Peeling area, P is easy peeling area, c is a central part between intersections, e is an end part between the intersections, and α is a return angle.

本発明にかかる湯切り孔付き蓋材の一実施形態は図１〜図３に示すとおりである。本発明にかかる湯切り孔付き蓋材１の一実施形態は、図１、図２に示すように湯切り孔付き蓋材１を四角形状の開口部を有する容器２のフランジ部２ａに蓋材熱接着部５により熱接着して取り付けられている。四角形状の湯切り孔付き蓋材１は、外周縁の一対の対向する角部に外方に突出する開封用摘み部３と湯切り孔形成用摘み部４を備えた外蓋１１と内蓋２１とが接着樹脂層３１を介して積層された構成からなり、湯切り孔形成用摘み部４より開封用摘み部３に向かって、外蓋１１の内蓋２１に対向する面には剥離剤層１２を備えた易剥離領域Ｐと、該易剥離領域Ｐに境界線Ｂを介して隣接する非剥離領域Ｎとを有し、易剥離領域Ｐ内には複数個の湯切り口形状の内蓋２１と接着樹脂層３１を貫通する湯切り孔切目６が形成され、湯切り孔形成用摘み部４の内側に蓋材熱接着部５にかかるように内蓋２１と接着樹脂層３１を貫通する剥離開始用切目線７が形成され、境界線Ｂを跨ぐように連続し内蓋２１と接着樹脂層３１を貫通する波形状切目８が形成された構成である。波形状切目８は、山部と谷部が交互に連続した波形状であり、境界線Ｂを跨ぐように配置されている。なお、波形状切目８は、山部の先端が湯切り孔形成用摘み部４側を向き谷部の先端が開封用摘み部３側を向くように境界線Ｂを跨ぐように境界線Ｂの全長さに亘って形成されている。波形状切目８の山部及び谷部の形状は、略Ｕ字状に限定されるものではなく、略Ｖ字状、コの字状、円弧状等の一端が閉じられた形状であればよく、湯切り孔形成用摘み部４を指で摘んで蓋材を剥離する際に抵抗なく剥離するためには先端部に平坦部のない略Ｕ字状や略Ｖ字状であることがより好ましい。また、形成する山部及び谷部の個数も境界線Ｂの長さにより適宜設定することができる。ただし、一箇所に集中して設けるのではなく、波形状切目８が、境界線Ｂと蓋材熱接着部５の内側縁との交点Ｉ、Ｉ間であって少なくとも両端部と中央部に形成されているのがよく、または境界線Ｂと蓋材熱接着部５の内側縁との交点Ｉ、Ｉ間であって全長さに亘って設けることが好ましい。そうすることにより、部分的に剥離され折り曲げられた外蓋の優れた形状保持機能が得られるものである。なお、本願では、剥離剤層１２を備えた領域を易剥離領域Ｐ、剥離剤層１２がない領域を非剥離領域Ｎとし、易剥離領域Ｐと非剥離領域Ｎを区画する境界を境界線Ｂという。 One embodiment of the lid member with a hot water hole according to the present invention is as shown in FIGS. As shown in FIGS. 1 and 2, one embodiment of a lid material 1 with a hot water hole according to the present invention is a lid material on a flange portion 2 a of a container 2 having a rectangular opening as shown in FIGS. 1 and 2. The heat bonding part 5 is attached by heat bonding. The lid member 1 having a rectangular hot water cut hole includes an outer lid 11 and an inner lid each having an opening knob 3 projecting outward and a hot water hole forming knob 4 projecting outwardly at a pair of opposite corners of the outer peripheral edge. 21 on the surface of the outer lid 11 facing the inner lid 21 from the hot water cut hole forming knob 4 toward the opening knob 3. The easy-peeling region P provided with the layer 12 and a non-peeling region N adjacent to the easy-peeling region P via a boundary line B. 21 and the adhesive resin layer 31 are formed, and the inner lid 21 and the adhesive resin layer 31 are penetrated so as to cover the lid heat bonding portion 5 inside the hot water hole forming knob 4. A wave-shaped cut 8 that is formed so as to cross the boundary line B and is formed through the inner lid 21 and the adhesive resin layer 31. A formed configuration. The corrugated cut 8 is a corrugated shape in which peaks and troughs are alternately continued, and is arranged so as to straddle the boundary line B. The corrugated cut 8 is formed on the boundary line B so that the tip of the peak portion faces the hot water cut hole forming knob 4 side and the tip of the valley portion faces the opening knob 3 side. It is formed over the entire length. The shape of the crests and valleys of the corrugated cut 8 is not limited to a substantially U shape, but may be any shape as long as one end is closed, such as a substantially V shape, a U shape, or an arc shape. In order to peel off the lid material without resistance when picking the hot water cut hole forming knob 4 with a finger, it is more preferable that the tip part has a substantially U-shape or a substantially V-shape without a flat portion. . In addition, the number of peaks and valleys to be formed can be appropriately set according to the length of the boundary line B. However, the corrugated cuts 8 are not formed in one place, but are formed at the intersections I and I between the boundary line B and the inner edge of the lid heat bonding portion 5 at least at both ends and the central portion. It is preferable that it is provided between the intersections I and I between the boundary line B and the inner edge of the lid heat bonding portion 5 and over the entire length. By doing so, the outstanding shape maintenance function of the outer cover partially peeled off and bent is obtained. In the present application, the region having the release agent layer 12 is defined as the easy release region P, the region without the release agent layer 12 is defined as the non-release region N, and the boundary between the easy release region P and the non-release region N is defined as the boundary line B. That's it.

一実施形態の湯切り孔付き蓋材１を開口部を有する容器２のフランジ部２ａに蓋材熱接着部５により熱接着して取り付けた状態の断面構成は図２に示すとおりである。紙層１３の内面の易剥離領域Ｐに剥離剤層１２が形成され、該易剥離領域Ｐに境界線Ｂを介して隣接する剥離剤層１２が非形成とされた非剥離領域Ｎとを有する外蓋１１と、アルミニウム箔層２２と熱接着性樹脂層２３が積層された内蓋２１が接着樹脂層３１により外蓋１１の剥離剤層１２面と内蓋２１のアルミニウム箔層２２面が接着された積層構成からなり、外蓋１１の剥離剤層１２と接着樹脂層３１間で剥離可能とされている。内蓋２１には湯切り孔形成用摘み部４の内側に蓋材熱接着部５の外縁にかかるように剥離開始用切目線７が形成され、易剥離領域Ｐにおいて境界線Ｂと蓋材熱接着部５で囲まれた領域内には複数の湯切り孔切目６が形成されており、剥離開始用切目線７及び湯切り孔切目６は内蓋２１と接着樹脂層３１を貫通する状態で形成されている。さらに、境界線Ｂ上には境界線Ｂを跨ぐように波形状切目８が、内蓋２１と接着樹脂層３１を貫通する状態で形成されている。なお、内蓋２１に使用されるアルミニウム箔を遮光印刷を施した二軸延伸ポリエチレンテレフタレート（ＰＥＴ）若しくはアルミニウム等の金属や酸化珪素、酸化アルミニウム等の無機物を蒸着した蒸着ＰＥＴとすることもでき、この場合には金属検知器を使用することができる。また、遮光印刷としては、酸化チタン等を主成分とするホワイトインキやカーボンブラック等を主成分とするブラックインキ、アルミペーストを主成分とするグレーインキまたはこれらの混合したインキ等が用いられる。 The cross-sectional structure of the state in which the lid member 1 with a hot water cut hole of one embodiment is attached by being thermally bonded to the flange portion 2a of the container 2 having the opening by the lid material thermal bonding portion 5 is as shown in FIG. A release agent layer 12 is formed in the easy release region P on the inner surface of the paper layer 13, and the release agent layer 12 adjacent to the easy release region P via a boundary line B is not formed. The outer lid 11, the inner lid 21 in which the aluminum foil layer 22 and the heat-adhesive resin layer 23 are laminated are bonded to the surface of the release agent layer 12 of the outer lid 11 and the surface of the aluminum foil layer 22 of the inner lid 21 by the adhesive resin layer 31. It consists of the laminated structure made and can be peeled between the release agent layer 12 of the outer lid 11 and the adhesive resin layer 31. The inner lid 21 is formed with a peeling start score line 7 on the inner side of the hot water cut hole forming knob 4 so as to cover the outer edge of the lid heat bonding portion 5, and the boundary line B and the lid material heat in the easy peeling region P. A plurality of hot water cut holes 6 are formed in an area surrounded by the bonding portion 5, and the peeling start cut line 7 and the hot water cut holes 6 pass through the inner lid 21 and the adhesive resin layer 31. Is formed. Further, a wavy cut 8 is formed on the boundary line B so as to cross the boundary line B so as to penetrate the inner lid 21 and the adhesive resin layer 31. In addition, the aluminum foil used for the inner lid 21 can be a biaxially stretched polyethylene terephthalate (PET) subjected to light-shielding printing or a vapor deposited PET on which a metal such as aluminum, silicon oxide, or an inorganic substance such as aluminum oxide is deposited, In this case, a metal detector can be used. As the light-shielding printing, white ink mainly containing titanium oxide or the like, black ink mainly containing carbon black or the like, gray ink mainly containing aluminum paste, or a mixed ink thereof is used.

また、湯切り孔付き蓋材１は、外蓋１１の紙層１３の上に二軸延伸されたフィルムを表面層として積層することもできる。表面層に用いる二軸延伸されたフィルムとしては、ＰＥＴ、ポリプロピレン（ＯＰＰ）、ナイロン（ＯＮ）等があり、その厚みは、通常６μｍ〜６０μｍである。紙層１３の表面には切目や切目線等が施されていないために美麗であるうえに、さらに表面層を積層することにより光沢感やマット感を付与することができ湯切り孔付き蓋材１の意匠性を高めることができる。さらに、後述するように湯切り孔形成用摘み部４より蓋材を剥離すると外蓋１１のみが部分的に剥離し境界線Ｂで折り曲げることにより波形状切目８で囲まれた内蓋２１に孔８ａ（図３参照）が形成され、該孔８ａより立ちのぼる湯気が紙層１３に触れ、紙層１３が吸湿することにより外蓋１１が二軸延伸フィルムからなる表面層側に引張られるようにカールするために外蓋１１の形状がより元に戻ることがない。なお、上記の紙層１３に形成した剥離剤層１２において、湯切り孔切目６が形成され囲まれた領域内は、剥離剤層の厚みを薄くしたり、若しくは半調模様等で剥離剤の塗布量を少なくする等して、剥離剤層１２と接着樹脂層３１との接着強度をそれ以外の易剥離領域Ｐより強くすることもできる。さらには、湯切り孔切目６が形成され囲まれた領域内には剥離剤層１２を設けずに非剥離領域とすることもできる。 Moreover, the lid material 1 with a hot water cut-out hole can be laminated as a surface layer with a biaxially stretched film on the paper layer 13 of the outer lid 11. Examples of the biaxially stretched film used for the surface layer include PET, polypropylene (OPP), nylon (ON) and the like, and the thickness is usually 6 μm to 60 μm. The surface of the paper layer 13 is beautiful because no cuts or score lines are given to the surface of the paper layer 13, and further, a glossy or matte feeling can be imparted by laminating the surface layer. The design property of 1 can be improved. Further, as will be described later, when the lid material is peeled from the hot water cut hole forming knob 4, only the outer lid 11 is partially peeled and bent at the boundary line B, so that a hole is formed in the inner lid 21 surrounded by the wavy cut line 8. 8a (see FIG. 3) is formed, and the steam rising from the hole 8a touches the paper layer 13, and the paper layer 13 absorbs moisture, so that the outer lid 11 is curled so as to be pulled to the surface layer side made of the biaxially stretched film. Therefore, the shape of the outer lid 11 does not return more. In the release agent layer 12 formed on the paper layer 13 described above, in the region surrounded by the hot water cut hole 6, the thickness of the release agent layer is reduced or the release agent layer is formed in a semi-tone pattern or the like. The adhesive strength between the release agent layer 12 and the adhesive resin layer 31 can be made stronger than the other easily peelable regions P by reducing the coating amount. Furthermore, it is also possible to provide a non-peeling region without providing the release agent layer 12 in the region surrounded by the hot water cut hole cut 6.

次に、一実施形態の湯切り孔付き蓋材１が容器２の開口部に接着された包装体に湯切り孔を形成する方法について図２、図３を参照しながら説明する。まず、図２に示す状態から、湯切り孔形成用摘み部４を指で摘んで蓋材を剥離すると、剥離開始用切目線７の部分にて外蓋１１の紙層１３の内面に形成された剥離剤層１２と接着樹脂層３１との間で剥離して外蓋１１のみが剥離する。さらに剥離が進み、内蓋２１と接着樹脂層３１を貫通する湯切り孔切目６に達すると、湯切り孔切目６に囲まれた内側の部分が外蓋１１に接着した状態で抜き取られて湯切り孔９が形成され、波形状切目８のＵ字状の山部及び境界線Ｂに達すると剥離は停止し、波形状切目８のＵ字状の山部で囲まれた内側部分は外蓋１１に接着した状態で境界線Ｂで折り曲げられ図３に示すように、容器２の開口部に蓋材熱接着部５にて接着された内蓋２１に湯切り孔９が形成される。さらに外蓋１１を開封用摘み部３側（図３の矢印方向）に折り曲げて部分的に剥離された外蓋１１は元に戻ることなく折り曲げられた状態で形状が保持される。波形状切目８を境界線Ｂ上に境界線Ｂを跨ぐように形成することにより外蓋１１のデッドホールド性（形状保持性）が向上し、特にアルミニウム箔層２２を積層した構成の内蓋２１の場合、折り曲げられる外蓋１１側に波形状切目８のＵ字状の山部で囲まれた部分のアルミニウム箔層２２が接着された状態となっているのでアルミニウム箔の塑性変形するという特性を活用でき、一層、外蓋１１の折り曲げられた状態の形状保持が優れたものとなる。なお、図３において８ａは、折り曲げられる外蓋１１側に波形状切目８のＵ字状の山部で囲まれた部分の内蓋２１を構成するアルミニウム箔層２２及び熱接着性樹脂層２３が接着された状態となっているために内蓋２１に形成された孔を示す。 Next, a method for forming a hot water hole in a package in which the lid member 1 with a hot water hole of one embodiment is bonded to the opening of the container 2 will be described with reference to FIGS. First, from the state shown in FIG. 2, when the lid material is peeled by picking the hot water cut hole forming knob 4 with a finger, it is formed on the inner surface of the paper layer 13 of the outer lid 11 at the part of the peeling start score line 7. Only the outer lid 11 is peeled by peeling between the release agent layer 12 and the adhesive resin layer 31. When the peeling further proceeds and reaches the hot water cut hole 6 passing through the inner lid 21 and the adhesive resin layer 31, the inner part surrounded by the hot water cut hole 6 is pulled out in a state of being bonded to the outer lid 11. When the cut hole 9 is formed and reaches the U-shaped peak of the wavy cut 8 and the boundary line B, the peeling stops, and the inner part surrounded by the U-shaped peak of the wavy cut 8 is the outer lid. As shown in FIG. 3, a hot water cutting hole 9 is formed in the inner lid 21 which is bent at the boundary line B in a state of being bonded to the adhesive 11 and bonded to the opening of the container 2 by the lid heat bonding portion 5. Further, the shape of the outer lid 11 which is partially peeled off by folding the outer lid 11 toward the opening knob 3 (in the direction of the arrow in FIG. 3) is maintained in a folded state without returning to its original state. By forming the corrugated cut 8 on the boundary line B so as to straddle the boundary line B, the dead hold property (shape retention property) of the outer lid 11 is improved. In particular, the inner lid 21 having a configuration in which the aluminum foil layer 22 is laminated. In this case, since the aluminum foil layer 22 of the portion surrounded by the U-shaped peak portion of the corrugated cut 8 is bonded to the side of the outer lid 11 to be bent, the aluminum foil layer 22 is plastically deformed. It can be utilized, and the shape retention of the outer lid 11 in a folded state is further improved. In FIG. 3, reference numeral 8a denotes that the aluminum foil layer 22 and the thermoadhesive resin layer 23 constituting the inner lid 21 of the portion surrounded by the U-shaped peak portion of the wave-shaped cut 8 are formed on the side of the outer lid 11 to be bent. A hole formed in the inner lid 21 because it is in a bonded state is shown.

つぎに、本発明の湯切り孔付き蓋材１を構成する各層に使用される材料や形成方法について説明する。 Below, the material used for each layer which comprises the lid | cover material 1 with a hot water hole of this invention, and a formation method are demonstrated.

まず、本発明の湯切り孔付き蓋材１の紙層１３としては、印刷適性の優れた坪量５０〜１３０ｇ／ｍ²の片面コート紙、両面コート紙が好ましい。 First, as the paper layer 13 of the lid member 1 with a hot water cut hole of the present invention, single-sided coated paper and double-sided coated paper having a basis weight of 50 to 130 g / m ² excellent in printability are preferable.

剥離剤層１２を形成する剥離剤としては、例えば、硝化綿系、ポリアミド系、ポリエステル系、アクリル系、ウレタン系、アルキッド系の樹脂が挙げられ、これらを単独若しくは組合わせて混合して溶液としてグラビア印刷、フレキソ印刷等の加工法でパートコートして剥離剤層１２とすることができる。剥離剤にはワックスやシリコンなどを添加剤として混合して易剥離性を調整することもできる。また、剥離剤層１２と紙層１３との間には例えば硝化綿系、ポリエステル系、アクリル系、ウレタン系、アルキッド系等の樹脂を単独若しくは混合した目止め剤を用いてアンダーコート層を設けてもよい。特に、片面コート紙の非コート面に剥離剤層１２を設ける場合には好ましい。また、紙層１３の接着樹脂層３１と積層される面にはイソシアネート系、ポリエチレンイミン系、有機チタネート系、ブタジエン系等のアンカーコート剤をコートすることもでき、非剥離領域Ｎの紙層１３と接着樹脂層３１との接着強度を高めることができる。 Examples of the release agent for forming the release agent layer 12 include nitrified cotton-based, polyamide-based, polyester-based, acrylic-based, urethane-based, and alkyd-based resins, and these can be used alone or in combination to form a solution. The release agent layer 12 can be formed by part coating by a processing method such as gravure printing or flexographic printing. Easy release properties can be adjusted by mixing the release agent with wax or silicon as an additive. In addition, an undercoat layer is provided between the release agent layer 12 and the paper layer 13 by using, for example, a sealing agent that is a single or mixed resin of nitrified cotton, polyester, acrylic, urethane, alkyd, or the like. May be. In particular, it is preferable when the release agent layer 12 is provided on the non-coated surface of single-side coated paper. The surface of the paper layer 13 to be laminated with the adhesive resin layer 31 can be coated with an anchor coating agent such as isocyanate, polyethyleneimine, organic titanate, or butadiene, and the paper layer 13 in the non-peeling region N. And the adhesive strength between the adhesive resin layer 31 can be increased.

外蓋１１と内蓋２１を接着させる接着樹脂層３１としては、ポリエチレン、エチレン／酢酸ビニル共重合体、エチレン／アクリル酸共重合体、エチレン／メタアクリル酸共重合体、アイオノマー、ポリプロピレン等の熱可塑性樹脂を用いることができ、これらを熱溶融押し出しして外蓋１１と内蓋２１とをエクストルージョン法により積層される。これ以外にエマルジョン接着剤やドライラミ接着剤を用いてロールコート、グラビアコート、キスコート等により接着樹脂層３１としウエットラミネーション、ドライラミネーション法により積層することもできるが生産性の高いエクストルージョン法が好ましい。 Examples of the adhesive resin layer 31 for bonding the outer lid 11 and the inner lid 21 include heat such as polyethylene, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / methacrylic acid copolymer, ionomer, and polypropylene. A plastic resin can be used, and these are heat-melted and extruded to laminate the outer lid 11 and the inner lid 21 by the extrusion method. In addition, the adhesive resin layer 31 can be formed by roll coating, gravure coating, kiss coating, or the like using an emulsion adhesive or dry laminating adhesive, and lamination can be performed by wet lamination or dry lamination, but an extrusion method with high productivity is preferable.

内蓋２１の最内層を積層される熱接着性樹脂層２３としては、熱溶融して押出しラミネーションすることのできるエチレン／アクリル酸共重合体やエチレン−メタアクリル酸共重合体を主成分とする樹脂が好ましく使用できる。熱接着性樹脂層２３はアルミニウム箔面に直接押出ラミネーションにより積層してもよいし、押出ポリエチレン層を介して積層してもよい。また、熱接着性樹脂層２３には、ポリエチレン、エチレン／酢酸ビニル共重合体、あるいは上記の樹脂にポリスチレンやポリブデン等を混合した樹脂も使用できる。 The heat-adhesive resin layer 23 on which the innermost layer of the inner lid 21 is laminated is mainly composed of an ethylene / acrylic acid copolymer or an ethylene-methacrylic acid copolymer that can be melted and extruded and laminated. Resins can be preferably used. The heat-adhesive resin layer 23 may be laminated directly on the aluminum foil surface by extrusion lamination, or may be laminated via an extruded polyethylene layer. The heat-adhesive resin layer 23 may be made of polyethylene, an ethylene / vinyl acetate copolymer, or a resin obtained by mixing polystyrene, polybutene, or the like with the above resin.

一実施形態においては、湯切り孔付き蓋材１の形状を４角形状として説明したが、形状は任意であり円形状、楕円形状等としてもかまわない。また、湯切り孔９を形成するための湯切り孔切目６の個数、大きさ、形状、位置は任意であり、湯切りに適したものであればよい。剥離開始用切目線７、湯切り孔切目６及び波形状切目８は、紙層１３に剥離剤層１２が形成された外蓋１１と、アルミニウム箔層２２と熱接着性樹脂層２３とが積層された内蓋２１を、接着樹脂層３１を介して積層して蓋材用の積層体を作製した後に、内蓋２１の熱接着性樹脂層２３の面からハーフカットを行うことにより形成されるものである。 In one embodiment, the shape of the lid member 1 with a hot water hole has been described as a quadrangular shape, but the shape is arbitrary and may be a circular shape, an elliptical shape, or the like. The number, size, shape, and position of the hot water cut hole 6 for forming the hot water cut hole 9 are arbitrary and may be any one suitable for hot water cutting. The peeling start cut line 7, the hot water cut hole 6 and the corrugated cut 8 are formed by laminating an outer lid 11 having a release agent layer 12 formed on a paper layer 13, an aluminum foil layer 22 and a thermal adhesive resin layer 23. The inner lid 21 is laminated via an adhesive resin layer 31 to produce a lid-use laminate, and then half-cut from the surface of the thermal adhesive resin layer 23 of the inner lid 21. Is.

図４は、本発明にかかる湯切り孔付き蓋材の他の実施形態を示し、湯切り孔付き蓋材１’を容器の開口部に接着した状態を示す平面図であって、湯切り孔形成用摘み部４から境界線Ｂに至る部分を示す部分平面図である。湯切り孔付き蓋材１’は一実施形態の湯切り孔付き蓋材１とは波形状切目８’の形成される位置と配置が異なり、それ以外は一実施形態と同じであり、同符号を付すことにより説明を省略する。湯切り孔付き蓋材１’の波形状切目８’は、山部と谷部が交互に連続した波形状であり境界線Ｂを跨ぐように配置されている。なお、山部及び谷部を形成する切目が略Ｕ字状切目からなり、山部の先端が湯切り孔形成用摘み部４側を向き谷部の先端が開封用摘み部側を向くように境界線Ｂを跨ぐように配置されている。波形状切目８’は、境界線Ｂと蓋材熱接着部５の内側縁との交点Ｉ、Ｉ間であって、交点Ｉ、Ｉ間の端部ｅ、ｅと中央部ｃに形成されている。なお、波形状切目８’の波長数は、適宜設定すればよく、また、数の異なる組の組合せであってもよい。 FIG. 4 is a plan view showing another embodiment of a lid member with a hot water hole according to the present invention, in which the lid material 1 ′ with a hot water hole is bonded to the opening of the container. FIG. 6 is a partial plan view showing a portion from a forming knob 4 to a boundary line B. The lid material 1 ′ with a hot water hole is different from the lid material 1 with a hot water hole in one embodiment in the position and arrangement of the corrugated cut 8 ′, and the other points are the same as those in the embodiment. The description is omitted by attaching. The corrugated cut 8 ′ of the lid member 1 ′ with a hot water cut hole has a corrugated shape in which peaks and troughs are alternately arranged, and is arranged so as to straddle the boundary line B. The cuts forming the peaks and valleys are substantially U-shaped cuts, with the tips of the peaks facing the hot water hole forming knob 4 side and the tips of the valleys facing the opening knob. It arrange | positions so that the boundary line B may be straddled. The corrugated cut 8 ′ is formed between the intersections I and I between the boundary line B and the inner edge of the lid heat bonding portion 5, and is formed at the ends e and e between the intersections I and I and the central portion c. Yes. Note that the number of wavelengths of the corrugated cut 8 'may be set as appropriate, or may be a combination of sets having different numbers.

次に、本発明について以下に実施例を挙げてさらに詳しく説明する。 Next, the present invention will be described in more detail with reference to examples.

片面コート紙７９．１ｇ／ｍ²のコート面にウレタン系のグラビアインキを用いて所定の絵柄を、非コート面に絵柄に見当を合せて硝化綿・ポリアミド系のグラビアインキを用いて部分的に剥離層を、グラビア印刷機により両面印刷して形成した。次に厚さ１２μｍの片面コロナ処理を施した二軸延伸ポリエチレンテレフタレートフィルム（ＰＥＴ）を表面層として用いて該コロナ処理面にポリエステル−イソシアネート系接着剤を塗布し、両面コート紙の絵柄面とをドライラミネーション法（ＤＬ）により貼合して＜ＰＥＴ／ＤＬ／絵柄印刷／紙／剥離層＞なる構成の剥離層を有する外蓋シートを作製した。次に接着樹脂層に低密度ポリエチレン（ＰＥ）、熱接着性樹脂層にエチレン−メタクリル酸共重合体（ＥＭＡＡ）を用いて、エクストルージョン法により、外蓋シートの剥離層面とアルミニウム箔（Ａｌ）１５μｍとをＰＥを熱溶融させながら厚さ１５μｍとしてサンドイッチラミネーションし、Ａｌの反対面にイソシアネート系アンカー剤（ＡＣ）を介してＥＭＡＡを熱溶融させながら厚さ２０μｍとしてラミネーションし、＜Ａｌ／ＥＭＡＡ＞なる構成の内蓋シートを作製すると同時に＜ＰＥＴ１２μｍ／ＤＬ／絵柄印刷／紙７９．１ｇ／ｍ²／剥離層／ＰＥ１５μｍ／Ａｌ１５μｍ／ＡＣ／ＥＭＡＡ２０μｍ＞なる構成の湯切り孔付き蓋材用シートを作製した。 Using a urethane gravure ink on a coated surface of 79.1 g / m ^{2 on} one side and a pattern on a non-coated surface using a nitrile cotton / polyamide gravure ink in register The release layer was formed by double-sided printing with a gravure printer. Next, using a biaxially stretched polyethylene terephthalate film (PET) with a single-sided corona treatment having a thickness of 12 μm as a surface layer, a polyester-isocyanate-based adhesive is applied to the corona-treated surface, and the image side of the double-side coated paper is An outer lid sheet having a release layer having a configuration of <PET / DL / pattern printing / paper / release layer> was prepared by bonding by a dry lamination method (DL). Next, using the low density polyethylene (PE) for the adhesive resin layer and ethylene-methacrylic acid copolymer (EMAA) for the thermal adhesive resin layer, the exfoliation layer surface of the outer lid sheet and the aluminum foil (Al) by the extrusion method. 15 μm is laminated with 15 μm thickness while heat-melting PE, and is laminated with 20 μm thickness while thermally melting EMAA via isocyanate anchor agent (AC) on the opposite side of Al. <Al / EMAA> An inner lid sheet having the following structure is prepared, and at the same time, a lid material sheet with hot water cut holes having a structure of <PET 12 μm / DL / pattern printing / paper 79.1 g / m ² / peeling layer / PE 15 μm / Al 15 μm / AC / EMAA 20 μm> is prepared. did.

その後、湯切り孔付き蓋材用シートの巻取に所定の湯切り孔切目、剥離開始用切目線及び波形状の切目からなる波形状切目を有する抜き型を備えたロータリーダイカッターでＥＭＡＡ面から内蓋と接着樹脂層を貫通するハーフカットを施し所定の湯切り孔切目、剥離開始用切目線、波形状切目を形成した。その後、断裁、抜き加工をして図１に示す湯切り孔付き蓋材１を作製した。 Then, from the EMAA surface with a rotary die cutter equipped with a punching die having a corrugated cut consisting of a predetermined hot cut hole cut, a peeling start cut line, and a corrugated cut for winding a lid material sheet with a hot cut hole A half cut penetrating the inner lid and the adhesive resin layer was performed to form predetermined hot water cut holes, peeling start cut lines, and corrugated cuts. Thereafter, cutting and punching were performed to produce a lid material 1 with a hot water cut hole shown in FIG.

湯切り孔付き蓋材に形成した波形状切目を山部及び谷部がＵ字状切目からなる波形状とし、山部の先端が湯切り孔形成用摘み部４側を向き谷部の先端が開封用摘み部３側を向くとともに境界線上を跨ぐように配置して形成した。波形状切目８’は、２波長を一組として、交点Ｉ、Ｉ間の端部ｅ、ｅと中央部ｃに形成し図４に示す湯切り孔付き蓋材１を作製した。波形状切目以外は実施例１と同じとした。 The wave-shaped cut formed in the lid member with a hot water cut hole is made into a wave shape with a crest and a valley made of U-shaped cuts, and the tip of the crest is directed toward the hot water cut hole forming knob 4 side, and the tip of the valley is It was formed by being arranged so as to face the opening knob 3 and to straddle the boundary line. The corrugated cut 8 ′ is formed at the ends e and e between the intersections I and I and the center c as a pair of two wavelengths, and the lid member 1 with a hot water cut hole shown in FIG. 4 is produced. Except for the corrugated cut, it was the same as Example 1.

実施例２の波形状切目を交点Ｉ、Ｉ間の中央部ｃのみとした。その他は、実施例１と同じとした。 Only the central portion c between the intersections I and I was defined as the corrugated cut in Example 2. Others were the same as in Example 1.

実施例２の波形状切目を交点Ｉ、Ｉ間の端部ｅ、ｅのみとした。その他は、実施例１と同じとした。 The corrugated cut of Example 2 was only the ends e and e between the intersections I and I. Others were the same as in Example 1.

〔比較例〕
湯切り孔切目、剥離開始用切目線を形成し、波形状切目を形成しない湯切り孔付き蓋材を作製した。その他は、実施例１と同じとした。 [Comparative Example]
A lid material with a hot water cut hole was formed in which a hot water cut hole cut and a peeling start cut line were formed, and a corrugated cut was not formed. Others were the same as in Example 1.

上記実施例１〜４及び比較例で作製した湯切り孔付き蓋材を即席焼きそばの入った四角形状の発泡スチロール容器の開口部にそれぞれ熱接着して供試サンプルとした。開封用摘み部より湯切り孔付き蓋材を湯切り孔形成用摘み部に向かって容器から一部剥離し、形成された開口から容器内に所定量の熱湯を注湯してから、再び開封用摘み部を元に戻して開口を閉塞し、この状態で所要時間（４分間）湯戻し調理した。その後、湯切り孔形成用摘み部を指で摘んで蓋材を境界線まで引張り外蓋と内蓋に剥離し、外蓋を開封用摘み部側に折り曲げた後、内蓋に形成された湯切り孔部を下方に向けて排湯した。その際に開封用摘み部側に折り曲げた外蓋の形状保持状況を観察し、外蓋の戻り角度αを基準に評価した。戻り角度αは、図３に示すように剥離した外蓋１１の境界線Ｂに至る面と剥離されていない外蓋面とで形成される角度を指す。次に評価基準を示す。 The lid materials with hot water cut holes prepared in Examples 1 to 4 and the comparative example were thermally bonded to the openings of square foamed polystyrene containers containing instant yakisoba, respectively, to obtain test samples. The lid material with a hot water hole is partially peeled from the container toward the hot water hole forming knob from the opening knob, and a predetermined amount of hot water is poured into the container through the formed opening, and then opened again. The picking part was returned to the original position to close the opening, and in this state, hot water cooking was performed for the required time (4 minutes). After that, the hot water cut hole forming knob is picked with a finger, the lid material is pulled to the boundary line, peeled off to the outer lid and the inner lid, the outer lid is bent to the opening knob portion side, and then the hot water formed on the inner lid is formed. The hot water was discharged with the cut hole facing downward. At that time, the state of the shape of the outer lid bent toward the opening knob was observed, and the evaluation was made based on the return angle α of the outer lid. The return angle α indicates an angle formed by a surface reaching the boundary line B of the peeled outer lid 11 and a non-peeled outer lid surface as shown in FIG. Next, evaluation criteria are shown.

〔評価基準〕
◎：外蓋が開封用摘み部側に折り曲げられた状態を保持した。（α≦３０°）
○：外蓋がやや元に戻った。（３０°＜α＜６０°）
△：外蓋に少し戻りが見られた。（６０°≦α＜９０°）
×：外蓋にかなりの戻りが見られた。（α≧９０°）〔Evaluation criteria〕
(Double-circle): The state by which the outer cover was bend | folded by the knob part for opening was hold | maintained. (Α ≦ 30 °)
○: The outer lid was slightly restored. (30 ° <α <60 °)
Δ: A slight return was seen on the outer lid. (60 ° ≦ α <90 °)
X: A considerable return was seen in the outer lid. (Α ≧ 90 °)

結果を表１に示す。表１に示すように実施例１は外蓋が折り曲げられた状態を保持し、スムーズに湯切りができた。実施例２は実施例１よりやや外蓋の戻りが見られたが良好に湯切りができた。実施例３、４は実施例２よりも外蓋の戻りが見られたが湯切りには支障がなく、実用上、全く問題のない程度であった。比較例は外蓋の戻りが著しく戻り角度αが９０°以上であり、湯切りの際、湯切り孔見え難く湯切りに不安があるものであった。 The results are shown in Table 1. As shown in Table 1, Example 1 maintained the state where the outer lid was bent, and was able to smoothly cut hot water. In Example 2, the outer lid was slightly returned from Example 1, but the hot water was cut off satisfactorily. In Examples 3 and 4, the outer lid returned more than in Example 2, but there was no hindrance to hot water cutting, and there was no problem in practical use. In the comparative example, the return of the outer lid was remarkably large, and the return angle α was 90 ° or more.

１、１’ 湯切り孔付き蓋材
２容器
２ａフランジ部
３開封用摘み部
４湯切り孔形成用摘み部
５蓋材熱接着部
６湯切り孔切目
７剥離開始用切目線
８、８’ 波形状切目
８ａ孔
９湯切り孔
１１外蓋
１２剥離剤層
１３紙層
２１内蓋
２２アルミニウム箔層
２３熱接着性樹脂層
３１接着樹脂層
Ｂ境界線
Ｉ境界線と蓋材熱接着部の内側縁との交点
Ｎ非剥離領域
Ｐ易剥離領域
ｃ交点間の中央部
ｅ交点間の端部
α 戻り角度 DESCRIPTION OF SYMBOLS 1, 1 'Cover material with a hot water cut hole 2 Container 2a Flange part 3 Opening knob 4 Hot water hole forming knob 5 Lid heat bonding part 6 Hot water cut hole 7 Peeling start cut line 8, 8' wave Shape cut 8a hole 9 hot water cut hole 11 outer lid 12 release agent layer 13 paper layer 21 inner lid 22 aluminum foil layer 23 thermal adhesive resin layer 31 adhesive resin layer B boundary line I boundary line and inner edge of lid heat bonding part Intersection with N N Non-peeling area P Easy-peeling area c Center part between intersections e End part between intersections α Return angle

Claims

An outer cover having at least a paper layer and an inner cover having at least an innermost layer having a heat-adhesive resin layer provided with an opening knob projecting outward at a position opposite to the outer peripheral edge, and a hot water hole forming knob. A lid member that is used by being thermally bonded to an opening of a container by a lid thermal bonding portion, wherein the outer lid and the inner lid are laminated via an adhesive resin layer. An easy-peeling region provided with a release agent layer between the outer lid and the inner lid from the cut-hole-forming knob to the opening knob, and a non-adjacent region adjacent to the easy-peel region via a boundary line A hot water cut hole that penetrates the inner lid in the shape of a plurality of hot water cut openings is formed in the easy peel area, and the lid material heat is formed inside the hot water cut hole forming knob. A peeling start score line penetrating the inner lid is formed so as to cover the adhesive portion, and the boundary Water cut perforated lid, characterized in that continuous wave-shaped cut penetrating the inner lid is formed so as to straddle the.

2. The hot water slicer according to claim 1, wherein the corrugated cut is formed at an intersection between the boundary line and the inner edge of the lid heat bonding portion and at least at both ends and a central portion. Cover material with holes.

The said corrugated cut | interruption is between the intersections of the said boundary line and the inner edge of the said lid | cover material heat-bonding part, and is formed over the full length. Lid material.

The said outer cover consists of the structure by which the surface layer which consists of a biaxially stretched film from the outer surface side, and the said paper layer were laminated | stacked in order, The lid material with a hot water hole according to any one of Claims 1-3 characterized by the above-mentioned. .

The said inner lid consists of the structure by which the innermost layer which consists of the said thermoadhesive resin layer, and the aluminum foil layer were laminated | stacked, The lid material with a hot water cut-off hole in any one of Claims 1-4 characterized by the above-mentioned.