JP2013193757A - Lid material, and packaging container using the same - Google Patents
Lid material, and packaging container using the same Download PDFInfo
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- JP2013193757A JP2013193757A JP2012061861A JP2012061861A JP2013193757A JP 2013193757 A JP2013193757 A JP 2013193757A JP 2012061861 A JP2012061861 A JP 2012061861A JP 2012061861 A JP2012061861 A JP 2012061861A JP 2013193757 A JP2013193757 A JP 2013193757A
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Images
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- Package Specialized In Special Use (AREA)
- Packages (AREA)
- Closures For Containers (AREA)
- Wrappers (AREA)
Abstract
Description
本発明は、上端に開口部を有し、かつ上端周縁にフランジ部を有する容器本体の、前記フランジ部においてシール密封するのに適した紙を主体とした蓋材に関するものであり、特に即席麺等を収納し、熱湯を注いで食する包装容器の蓋材であってアルミニウム箔を含まない構成の蓋材に関する。 The present invention relates to a paper-based cover material suitable for sealing and sealing at the flange portion of a container body having an opening at the upper end and a flange portion at the upper edge, and particularly instant noodles. It is related with the lid | cover material of the structure which is a lid | cover material of the packaging container which accommodates etc. and pours hot water and does not contain aluminum foil.
従来、例えば即席麺や即席スープ等を収納する包装容器において、上端に開口部を有し、かつ上端周縁にフランジ部を有する容器本体の前記フランジ部を熱シール等により密封する紙を主体とした蓋材として、紙層の下面にアルミニウム箔、シーラント層が積層されたものが知られている。この開封に際し、フランジ部にシールされている蓋材をその周縁のタブを持ち上げながら略中心部まで剥がすと、上記のようなアルミニウム箔を介在させた構成の蓋材は、剥がしたままの状態を維持できる性質（以下デッドホールド性という）を有する。 Conventionally, for example, in a packaging container for storing instant noodles, instant soup, etc., the main part is a paper that seals the flange part of the container body having an opening at the upper end and a flange part at the upper peripheral edge by heat sealing or the like. As a lid material, a laminate in which an aluminum foil and a sealant layer are laminated on the lower surface of a paper layer is known. At the time of opening, if the lid material sealed to the flange portion is peeled off to the substantially central portion while lifting the tabs on the periphery, the lid material having the above-described aluminum foil intervening state remains peeled off. It has a property that can be maintained (hereinafter referred to as dead hold property).
この性質により、例えば即席ラーメンなどでは、剥がして半開きの状態のまま容易に熱湯を注ぐことができ、次いで一旦再封して麺を温めほぐし柔らかくする場合、蓋材を元に戻し、タブを容器本体のフランジ部に巻き付けるようにして止められる性質（以下再封性という）を有するものであった。この再封性としては蓋材を元に戻すとカールなどせずに平坦になる性質であってもよい。 Due to this property, for example, instant ramen can be peeled off and easily poured in half-open state, and then resealed once to warm the noodles and soften them, put the lid back on and put the tabs in the container It had a property (hereinafter referred to as resealability) that can be stopped by being wound around the flange portion of the main body. The resealability may be a property of flattening without curling when the lid is returned to its original state.
しかしながら、上記のようなアルミニウム箔が介在する構成の蓋材においては、使用後の焼却処理において、アルミニウム箔が炉中にインゴットとして絡みついて焼却炉を傷めたり、焼却効率を低下させたりする問題があった。また、その焼却灰の埋立処分において雨水等との反応による有害ガスの発生等の問題があった。
さらにまた、蓋材にアルミニウム箔の介在は、内容物が収容された容器中に異物の混入を検査する金属探知機の使用を不可能にしていて、このような金属探知機使用による検査法を可能とすることが要望されていた。
However, in the lid material having the structure in which the aluminum foil is interposed as described above, in the incineration process after use, there is a problem that the aluminum foil is entangled as an ingot in the furnace and damages the incinerator or reduces the incineration efficiency. there were. In addition, the landfill disposal of the incineration ash has problems such as generation of harmful gases due to reaction with rainwater.
Furthermore, the inclusion of aluminum foil in the lid makes it impossible to use a metal detector that inspects the inclusion of foreign matter in the container in which the contents are stored, and the inspection method using such a metal detector is not possible. It was requested to be possible.
上記問題点を解決するための蓋材として、例えばアルミニウム箔を除いた紙層、シーラント層等で構成された積層材料を用いた場合、デッドホールド性がなく簡単に蓋が閉じてしまい、熱湯を注ぎ難くし、熱湯がこぼれ火傷などの危惧があった。また熱湯を注いだ後の再封に際し、熱等で蓋がカールして閉まらず、再封しにくいという問題点があった。 As a cover material for solving the above problems, for example, when a laminated material composed of a paper layer excluding aluminum foil, a sealant layer, etc. is used, the cover is easily closed without dead hold, and hot water is used. It was difficult to pour, hot water spilled and there were concerns about burns. In addition, when resealing after pouring hot water, there was a problem that the lid was not curled and closed by heat or the like, and it was difficult to reseal.
図３には蓋材のデッドホールド性を模式的に示した。図３（Ａ）には、容器本体（４０）の開口部周縁に形成されたフランジ（４２）の上面にシールされた蓋材（４１）を開封用プルタブ（４３）を引っ張って上方に持ち上げて図の左側の開口部を開けた状態の断面を示している。 FIG. 3 schematically shows the dead hold property of the lid. In FIG. 3 (A), the lid (41) sealed on the upper surface of the flange (42) formed at the periphery of the opening of the container body (40) is lifted upward by pulling the pull pull tab (43). The cross section of the state which opened the opening part of the left side of a figure is shown.
蓋材にデッドホールド性がある場合には開けられた蓋材（４１）は持ち上げる作業を終了した後に力を加えることを止めても元の状態には戻らず、容器本体（４０）の開口部は開口した状態を保ち、内部にお湯を注ぐ作業を安全に行うことが出来る。
図示しないが蓋材（４１）の開封用プルタブ（４３）を容器本体のフランジ（４２）に引っ掛けて元に戻らない状態をより安定させることも可能である。
また、お湯を注いでから再封する動作を行なったときも、蓋材は反発力によって戻ることなく、調理に要する一定時間が経過するまで安心して放置することが出来る。
If the lid material has a dead hold property, the opened lid material (41) does not return to its original state even if the application of force is stopped after the lifting operation is finished, and the opening of the container body (40) Can keep the open state and can safely pour hot water inside.
Although not shown, it is also possible to stabilize the state in which the opening pull tab (43) of the lid member (41) is hooked on the flange (42) of the container main body and does not return.
Also, when the operation of re-sealing after pouring hot water is performed, the lid member does not return due to the repulsive force, and can be left in peace until a certain time required for cooking elapses.
これに対して蓋材にデッドホールド性がない場合には、図３（Ａ）の状態で蓋材（４１）から手を離すと蓋材（４１）は折れ曲がった状態（４１’）から反発力によって元の状態に戻ってしまい、図３（Ｂ）のように容器本体（４０）の開口部を元のように塞いでしまうことになる。熱湯から発生する蒸気の影響を受けてこの戻りはさらに促進される。この場合には容器内部にお湯を注ぐ作業は蓋材を手で押さえた状態で手早く行なわなければならず危険でやりにくい作業となってしまう。 On the other hand, when the lid member does not have dead hold property, when the hand is released from the lid member (41) in the state of FIG. 3A, the lid member (41) is repelled from the bent state (41 ′). Thus, the original state is restored, and the opening of the container body (40) is closed as in the original state as shown in FIG. This return is further accelerated under the influence of steam generated from hot water. In this case, the operation of pouring hot water inside the container must be performed quickly with the lid held down by hand, which is a dangerous and difficult operation.
このような問題に対する解決策として特許文献１には、廃棄物に係わる環境問題の危惧がなく、かつ金属探知機による製品の検査を可能にするために、アルミニウム箔を用いない構成の積層体であっても、十分な開封状態（デッドホールド性）と再封性を有する即席食品用容器の蓋材が提案されている。 As a solution to such a problem, Patent Document 1 describes a laminated body that does not use aluminum foil so that there is no risk of environmental problems related to waste and in order to enable inspection of products by a metal detector. Even so, a lid for an instant food container having a sufficiently opened state (dead hold property) and resealability has been proposed.
この提案では、容器本体の上端開口部をシール密封する、アルミニウム箔を含まない積層体で、かつ外周縁に剥離用タブと開封用タブを有し、該両タブは中心より略９０°の位置に設けられている即席食品用容器の蓋材において、前記積層体は、複合シートと表面シートとが、中央に前記剥離用タブの基部の幅近傍の所定の領域に易剥離剤を塗布することにより形成された易剥離層による易剥離領域と該易剥離領域以外の接着領域とに区画されて互いに積層接着され、前記表面シートの易剥離領域と接着領域の境界線よりやや易剥離領域の両側にハーフカットによるミシン目もしくはそれと類似の切り目を刻設してなる即席食品用容器の蓋材が開示されている。 In this proposal, the upper end opening of the container body is hermetically sealed and does not include an aluminum foil, and has a peeling tab and an opening tab on the outer peripheral edge, and both tabs are positioned approximately 90 ° from the center. In the lid for the instant food container provided in the laminate, the laminate is such that the composite sheet and the surface sheet apply an easy-release agent to a predetermined region near the width of the base of the release tab in the center. The easy-peeling layer formed by the above-mentioned easy-peeling region and an adhesive region other than the easy-peeling region are partitioned and laminated and bonded to each other, and both sides of the easy-peeling region slightly from the boundary line between the easy-peeling region and the adhesive region of the topsheet Discloses a lid for a container for instant food, which has a perforation or a similar cut by half cut.
この蓋材を用いると、蓋の上層の一部を帯状に剥離、除去することが出来、残った蓋の下層部分がヒンジ的に機能して開封時と再封時に元に戻らないという性質によってデッドホールド性を発現できるという効果がある。
図４は上記の蓋材の帯状剥離部分ミシン目加工の説明図である。（Ａ）は上層の一部の剥離前の状態を、（Ｂ）は蓋材の部分開封後の状態を示している。
By using this lid material, a part of the upper layer of the lid can be peeled off and removed, and the lower layer part of the remaining lid functions as a hinge and does not return to its original state when opened and resealed. There is an effect that dead hold property can be expressed.
FIG. 4 is an explanatory diagram of the strip-like peeled portion perforation processing of the lid member. (A) shows the state before peeling of a part of the upper layer, and (B) shows the state after partial opening of the lid.
容器の開封時には、まず、容器のフランジに蓋材（４１）をシールしたところを上面から見た図４（Ａ）に矢印で示したように、剥離用プルタブ（４４）を把持して上方に持ち上げる。これによって剥離開始ハーフカット（４５）から上層部分が切り離されて上層部の剥離部境界のミシン目加工（１１）に沿って境界線で囲まれた内部の領域のみが帯状に除去される。 When opening the container, first, as shown by the arrow in FIG. 4 (A) when the lid (41) is sealed from the flange of the container as viewed from above, the peeling pull tab (44) is gripped upward. lift. As a result, the upper layer portion is separated from the peeling start half cut (45), and only the inner region surrounded by the boundary line along the perforation (11) at the boundary of the peeling portion of the upper layer portion is removed in a strip shape.
つぎに開封用プルタブ（４３）を把持して矢印のように上方に持ち上げる。これによって容器外周縁のフランジから蓋材（４１）が剥離して容器開口部が部分的に開口する。このときに、蓋材（４１）のほぼ中心部まで剥離すると上層部の剥離部境界のミシン目加工（１１）に沿って境界線で囲まれた内部の領域のみが帯状に除去された位置に到達する。この位置で剥離を停止して蓋材を剥離進行方向に折り曲げると図４の（Ｂ）に断面を示した状態で停止する。 Next, the pull tab (43) for opening is grasped and lifted upward as indicated by an arrow. As a result, the lid (41) is peeled off from the flange on the outer periphery of the container, and the container opening is partially opened. At this time, when the cover material (41) is peeled to almost the center, only the inner region surrounded by the boundary line along the perforation (11) at the boundary of the peeled portion of the upper layer portion is removed at the position where it is removed in a strip shape. To reach. When peeling is stopped at this position and the lid member is bent in the peeling progress direction, it stops in a state where the cross section is shown in FIG.
このときに、蓋材は上層部が剥離除去された領域（４６）でヒンジ状に折れ曲がり開封状態を保持する。すなわち、上記領域（４６）においては紙を主体とする上層部が剥離除去されることで、厚みも薄くなっている為、折り曲げられた蓋材が元の平坦な状態に戻ろうとする反発力が低減される。上記領域以外では剥離された蓋材の厚みが減っていないので折れ曲がることはない。さらに蓋材（４１）を折り曲げて開封用プルタブ（４３）をフランジに引っ掛けて完全に仮固定することも可能である。
また、この蓋を用いた商品はアルミニウム箔を有しないのでお湯入れ調理とともに電子レンジ調理も可能である。
At this time, the lid member is folded in a hinge shape in the region (46) where the upper layer portion is peeled and removed, and the unsealed state is maintained. That is, in the region (46), since the upper layer portion mainly made of paper is peeled and removed, the thickness is reduced, so that the repulsive force that the folded lid member tries to return to the original flat state is generated. Reduced. Since the thickness of the peeled lid member is not reduced outside the above region, it does not bend. Further, the lid member (41) can be bent and the opening pull tab (43) can be hooked on the flange to be completely temporarily fixed.
Moreover, since the product using this lid does not have an aluminum foil, it can be cooked in a microwave oven together with hot water cooking.
蓋材の上層部分を貫通する直線状のミシン目を設けた上記の蓋材においては、断続的に
入れたハーフカットの間を破りながら切り取るために剥離時の抵抗がやや大きく、剥離する角度によってはうまく剥離できない場合がある。
境界線として上層部分を貫通する直線状のハーフカットを設ける方法もあるが、この方法においては、容器にシールする前のあらかじめ蓋の外形に抜き加工された枚葉状態の蓋のときに製造、充填ライン上でその直線に沿って蓋材が折れ込み不具合が発生する可能性がある。
In the above-mentioned lid material provided with a linear perforation that penetrates the upper layer portion of the lid material, the resistance at the time of peeling is somewhat large in order to cut while breaking between the half cuts that are intermittently put, and depending on the angle at which the lid material peels May not peel well.
There is also a method of providing a linear half cut that penetrates the upper layer portion as a boundary line, but in this method, it is manufactured at the time of a single-sheet state lid that has been punched into the outer shape of the lid before sealing to the container, There is a possibility that the lid material will be folded along the straight line on the filling line to cause a malfunction.
とくに端から端までの直線カットを施すと、蓋材の製造工程や充填時の生産ライン上で蓋が折れ曲がってしまう危険が大きい。図５には蓋材の枚葉状態での折れ曲がりの説明図を示した。左側の図は蓋材（４１）に直線状のハーフカット（１０）を二本刻設した、枚葉に抜き加工した後の折れ曲がり前の状態を、右側の図は直線状のハーフカット（１０）から折れ曲がった後の様子である。 In particular, when a straight cut is performed from end to end, there is a high risk that the lid will be bent on the manufacturing process of the lid material or on the production line at the time of filling. FIG. 5 shows an explanatory diagram of the bending of the lid material in a single wafer state. The figure on the left shows two straight half-cuts (10) on the lid (41), and shows the state before bending after the sheet is punched, and the figure on the right shows the straight half-cut (10 ) After being bent.
上記の事情から蓋の表面から上層部分を貫通するハーフカットを入れてそれに沿って上層部分を切り取る蓋材で、開封時に切り取り易く、デッドホールド性を有し、かつ枚葉状態での製造時と充填時に蓋材が折れて不具合が起こることのないアルミニウム箔を含まない蓋材が望まれていた。 From the above circumstances, it is a lid material that cuts the upper layer portion along the half cut that penetrates the upper layer portion from the surface of the lid, and it is easy to cut at the time of opening, has a dead hold property, and at the time of manufacturing in a single wafer state There has been a demand for a lid material that does not include an aluminum foil that does not break when the lid is filled.
本発明は、かかる従来技術の問題点を解決するものであり、その課題とするところは、廃棄物に係わる環境問題の危惧をなくして、金属探知機による製品の検査と電子レンジによる調理を可能にするために、アルミニウム箔を用いない構成の積層体であっても、十分な開封状態（デッドホールド性）と再封性を有し、かつ枚葉状態での製造時と充填時に蓋材が折れて不具合が起こることのない即席食品用容器の蓋材を提供することにある。 The present invention solves the problems of the prior art, and the problem is that the product can be inspected by a metal detector and cooked by a microwave oven without fear of environmental problems related to waste. Therefore, even in a laminate having a structure that does not use an aluminum foil, it has a sufficiently opened state (dead hold property) and resealability, and the lid material is produced at the time of manufacturing and filling in a single wafer state. An object of the present invention is to provide a lid for an instant food container that does not break and does not cause problems.
そこで本発明者は、蓋の表面から上層部分を貫通するハーフカットを入れてそれに沿って上層部分を切り取る蓋材で、容器外面となる蓋材の表面から切離線として入れる上層部を貫通するハーフカットの形状を直線状ではなく波線等の非直線状とすることで開封時に切り取り易く断面が荒れない、かつ充填時等の枚葉状態での取り扱い時に蓋材が折れて不具合が起こることのない蓋材とすることが出来ることを見出し本発明を完成した。
上記のように蓋材の表面からハーフカットの切離線を入れるにあたって、ハーフカットの切離線の形状は非直線状であれば波線状に限らず、他の曲線や折れ曲がりを含む線状でもよい。
Therefore, the inventor puts a half cut penetrating the upper layer portion from the surface of the lid and cuts the upper layer portion along the half cut, and the half portion penetrating the upper layer portion inserted as a separation line from the surface of the lid material serving as the outer surface of the container By making the shape of the cut not a straight line but a non-linear shape such as a wavy line, it is easy to cut when opening, the cross section is not rough, and the lid material does not break when handling in a single wafer state such as filling The present invention was completed by finding that it can be used as a lid.
As described above, when the half-cut separation line is entered from the surface of the lid member, the shape of the half-cut separation line is not limited to the wavy line shape as long as the shape is non-linear, and may be a line shape including other curves or bends.
上記の課題を解決するための、本発明の請求項１に係る発明は、充填時に枚葉供給されて容器本体の上端開口部にシール密封される、アルミニウム箔を含まない積層体からなり、かつ外周縁に剥離用タブと開封用タブを有し、該両タブは中心より略９０°の位置に設けられている蓋材において、
前記積層体は、下層部と上層部とが、中央に前記剥離用タブの基部の幅近傍の所定の領域に易剥離剤を塗布することにより形成された易剥離層による易剥離領域と該易剥離領域以外の接着領域とに区画されて互いに積層接着され、易剥離領域と接着領域の境界線よりやや易剥離領域に入り込んだ両側の上層部にハーフカットによる非直線状の切り目を刻設してなることを特徴とする蓋材である。
The invention according to claim 1 of the present invention for solving the above-described problem is a laminate that does not include an aluminum foil that is supplied as a single sheet at the time of filling and is hermetically sealed at the upper end opening of the container body, and In the lid member having a peeling tab and an opening tab on the outer peripheral edge, both tabs being provided at a position of approximately 90 ° from the center,
In the laminate, the lower layer portion and the upper layer portion have an easy peel region formed by an easy peel layer formed by applying an easy peel agent to a predetermined region in the vicinity of the width of the base of the peel tab at the center, and the easy peel portion. Cut into non-linear cuts by half-cuts on the upper layer on both sides that are divided and bonded to each other by bonding areas other than the peeling area, and entered the easy peeling area slightly from the boundary between the easy peeling area and the bonding area. It is a lid material characterized by comprising.
本発明の請求項２に係る発明は、前記上層部は少なくとも紙層を含む構成からなり、下層部は内面側から少なくともシーラント層、基材フィルム層、接着熱可塑性樹脂層の順に積層されていることを特徴とする請求項１に記載の蓋材である。 The invention according to claim 2 of the present invention is such that the upper layer portion includes at least a paper layer, and the lower layer portion is laminated in the order of at least a sealant layer, a base film layer, and an adhesive thermoplastic resin layer from the inner surface side. It is a lid | cover material of Claim 1 characterized by the above-mentioned.
本発明の請求項３に係る発明は、前記剥離用タブの基部の下層部にハーフカットによる溝を刻設し、該刻設されたハーフカットによる溝が前記非直線状の切り目と交差していることを特徴とする請求項１または２に記載の蓋材である。 In the invention according to claim 3 of the present invention, a groove by a half cut is formed in a lower layer portion of a base portion of the peeling tab, and the groove formed by the half cut intersects with the non-linear cut. It is a lid | cover material of Claim 1 or 2 characterized by the above-mentioned.
本発明の請求項４に係る発明は、非直線状の一列の切り目における幅が１ｍｍから３ｍｍの範囲であることを特徴とする請求項１から３のいずれか１項に記載の蓋材である。 The invention according to claim 4 of the present invention is the lid according to any one of claims 1 to 3, wherein the width of the cut line in the non-linear shape is in the range of 1 mm to 3 mm. .
本発明の請求項５に係る発明は、非直線状の二列の切り目における最狭部の幅が５ｍｍ以上であることを特徴とする請求項１から４のいずれか１項に記載の蓋材である。 The invention according to claim 5 of the present invention is characterized in that the width of the narrowest portion in the two non-linear cuts is 5 mm or more, and the lid material according to any one of claims 1 to 4 It is.
本発明の請求項６に係る発明は、請求項１から５のいずれか１項に記載の蓋材を用いた包装容器である。 The invention according to claim 6 of the present invention is a packaging container using the lid material according to any one of claims 1 to 5.
本発明の請求項１または２に係る蓋材は、その構成中にアルミニウム箔を含まないので、廃棄物に係わる環境問題の危惧がなく、かつ金属探知機による検査が可能となっている。さらに、開封に際し、まず外周縁の剥離用タブを引っ張り上げると易剥離領域の両側にハーフカットによる切れ目に沿って易剥離領域の上層部が切れて剥離され、次いで他方の開封用タブを引っ張りあげ、上層部が剥離された部分まで蓋材を剥がして折り曲げると、その剥離された部分が、シーラント層、基材フィルム層等でなる下層の薄いフィルムのみとなるので、折り曲げられたままの状態を維持できる性質、即ちデットホールド性を有し、さらに再封に際し、折り曲げられた部分を元に戻すと、この部分に紙層がないのでカールが無くなり平坦な状態に戻り易くなる所謂再封性にも優れる蓋材とすることができる。 Since the lid according to claim 1 or 2 of the present invention does not include an aluminum foil in its configuration, there is no risk of environmental problems related to waste, and inspection by a metal detector is possible. Furthermore, when opening, first pulling up the peeling tab on the outer peripheral edge, the upper layer part of the easy peeling area is cut along the cuts on both sides of the easy peeling area, and then the other opening tab is pulled up. When the cover material is peeled off to the part where the upper layer part is peeled off and folded, the peeled part becomes only a thin film of the lower layer made of a sealant layer, a base film layer, etc. It has a property that can be maintained, that is, a dead hold property, and when resealed, when the folded part is returned to its original state, there is no paper layer in this part, so there is no curl and it is easy to return to a flat state, so-called resealability Can also be an excellent lid.
さらに、請求項１または２に係る本発明の蓋材は、易剥離領域と接着領域の境界領域に形成された、非直線形状のハーフカットによる切離部が上層部に形成されていることによって、ハーフカットによる切離部を直線状に形成した場合に比べて充填時に蓋材が折れて不具合が起こることのない蓋材とすることが出来る。 Furthermore, the lid material of the present invention according to claim 1 or 2 is formed in a boundary region between the easily peelable region and the adhesive region, and a separation portion by a non-linear half cut is formed in the upper layer portion. Compared with the case where the cut-off part by the half cut is formed in a straight line shape, the lid material can be made to be free from problems due to the lid material being broken at the time of filling.
加えて、請求項１または２に係る本発明の蓋材は、易剥離領域と接着領域の境界領域に形成された、非直線形状のハーフカットによる切離部が上層部に形成されていることによって、ミシン目状のカットによる切離部を直線状に形成した場合に比べて、開封時に切り取り易く断面が荒れない蓋材とすることが出来る。 In addition, the lid material of the present invention according to claim 1 or 2 has a non-linear half-cut separation portion formed in the upper layer portion formed in the boundary region between the easy peeling region and the adhesion region. Therefore, it is possible to make the lid member easy to cut at the time of opening and not having a rough cross-section as compared with the case where the separation portion by the perforated cut is formed in a straight line.
また、請求項３に係る本発明の蓋材は、開封前の易剥離領域の剥離に際し、その剥離用タブを一旦手前側に折り曲げてから引っ張りあげると、下層部に刻設されたハーフカット溝がきっかけとなり、この溝と交差している上層部のハーフカットから切断し易くなるので、易剥離領域における上層部の剥離を容易にかつ確実にすることができる。 Further, the lid material of the present invention according to claim 3 is a half-cut groove formed in the lower layer portion when the easy-release region before opening is peeled off, when the peeling tab is once bent and then pulled up. Since it becomes easy to cut | disconnect from the half cut of the upper layer part which cross | intersects this groove | channel, peeling of the upper layer part in an easy peeling area | region can be made easy and reliable.
請求項４に係る本発明の蓋材によれば、非直線状の一列の切り目における幅が１ｍｍから３ｍｍの範囲であることによって開封時に切断し易くかつ切り目からそれて破断することのない蓋材とすることが出来る。前記一列の切り目における幅とは、曲線や折れ線状などの非直線状の切り目における振幅の幅（Ｐ）を表す。 According to the lid material of the present invention according to claim 4, the width of the non-linear cuts in the row is in the range of 1 mm to 3 mm, so that the lid material is easy to cut at the time of opening and does not break from the cut. It can be. The width in the line of cuts represents the width (P) of the amplitude in a non-linear cut such as a curved line or a polygonal line.
本発明の請求項５に係る蓋材は、非直線状の二列の切り目における最狭部の幅が５ｍｍ以上であることによって開封時に切断位置が隣接する切り目に移行することなく安定して
切断できる蓋材とすることが出来る。
The lid material according to claim 5 of the present invention is stably cut without shifting the cut position to the adjacent cut at the time of opening because the width of the narrowest part in the non-linear two rows of cuts is 5 mm or more. It can be used as a cover material.
本発明の請求項６に係る包装容器によれば、開封時に切り取り易く断面が荒れない、デッドホールド性を有する、かつ充填時に蓋材が折れて不具合が起こることのない包装容器とすることが出来るようになった。 According to the packaging container of claim 6 of the present invention, it is possible to provide a packaging container that is easy to cut at the time of opening, does not have a rough cross section, has a dead hold property, and does not break when lid is broken. It became so.
以上のように、本発明の即席食品用容器の蓋材によれば、容器外面となる蓋材の表面から切離線として入れる上層部を貫通するハーフカットの形状を直線状のミシン目ではなく非直線状のハーフカットとすることで開封時に切り取り易く断面が荒れない、デッドホールド性を有する、かつ充填時に蓋材が折れて不具合が起こることのない蓋材とそれを用いた包装容器とすることが出来るようになった。 As described above, according to the lid for instant food containers of the present invention, the shape of the half cut that penetrates the upper layer portion that is inserted as a separation line from the surface of the lid that is the outer surface of the container is not a straight perforation. By making a straight half-cut, it is easy to cut at the time of opening, the cross-section is not rough, has a dead hold property, and the lid material does not break when filling, and a packaging container using the same Can be done.
以下本発明の実施の形態を図面を用いて詳細に説明する。本発明の蓋材を用いた容器の例は、図１の概観図（Ａ）に示すように、例えば上端の周縁にフランジ（４２）を設けた開口部を有する容器本体（４０）の前記開口部を密封するための蓋材（４１）に関するものであって、その蓋材（４１）は、アルミニウム箔を含まない積層体で、その外周縁に剥離用プルタブ（４４）と開封用プルタブ（４３）を有し、これら両タブ（４４、４３）は中心（Ｑ）より略９０°の位置に設けられていて、その一方の剥離用プルタブ（４４）は、上層部に刻設されている剥離部境界やや内側のハーフカット加工（１０）を切断し上層部を剥離するためのもので、他方の開封用タブ（４３）は、蓋材（４１）をフランジ（４２）から剥離し開封するためのものであり、容器本体（４０）のフランジ（４２）にヒートシール等でシールされ、密封されているものである。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. An example of a container using the lid material of the present invention is the opening of the container body (40) having an opening provided with a flange (42) at the periphery of the upper end, for example, as shown in FIG. The lid member (41) is a laminated body that does not contain an aluminum foil, and a peeling pull tab (44) and an opening pull tab (43) on the outer periphery thereof. These tabs (44, 43) are provided at a position approximately 90 ° from the center (Q), and one of the peeling pull tabs (44) is a peeling formed on the upper layer portion. This is for cutting the half-cut process (10) at the part boundary and slightly inside to peel off the upper layer part, and the other opening tab (43) is for peeling off the lid (41) from the flange (42) and opening it. The container body (40) has a flange (42) with a heater. Sealed with a seal or the like, in which is sealed.
上記本発明の蓋材（４１）は、まず図１（Ａ）の正面図に示すように、中心より４５°方向に延びる外周縁に剥離用プルタブ（４４）と開封用プルタブ（４３）を有し、中央に前記の剥離用プルタブ（４４）の基部に近い幅の領域に易剥離剤の塗布された易剥離層（３０）の領域からなる易剥離領域（Ｌ１）とこの易剥離領域（Ｌ１）以外の接着領域（Ｌ２）とに区画されて表面の上層部と内面の下層部が互いに積層接着されていて、易剥離領域（Ｌ１）と接着領域（Ｌ２）との２本の境界線よりやや易剥離領域（Ｌ１）内に、容器外面となる蓋材の表面から切離線として入れる、上層部を貫通する非直線状の剥離部境界のハーフカット加工（１０）を刻設してなるものである。 First, as shown in the front view of FIG. 1 (A), the lid member (41) of the present invention has a peeling pull tab (44) and an opening pull tab (43) on the outer peripheral edge extending in the direction of 45 ° from the center. In the center, an easy peel region (L1) composed of an easy peel layer (30) coated with an easy peel agent in a region close to the base of the peel pull tab (44) and the easy peel region (L1) ) Other than the adhesive region (L2), the upper layer portion of the surface and the lower layer portion of the inner surface are laminated and adhered to each other, and from the two boundary lines of the easily peelable region (L1) and the adhesive region (L2) Slightly easy peeling area (L1), which is engraved with a half-cut process (10) at the boundary of the non-linear peeling part penetrating the upper layer part, which is inserted as a separating line from the surface of the lid that is the outer surface of the container It is.
さらに上記本発明の蓋材（４１）は、アルミニウム箔を含まない積層体でなり、この積層体は、図２の（Ａ）に示すように、例えば表面の上層部（５１）と内面の下層部（５２
）が、中央に剥離用プルタブ（４４）の基部の幅近傍の領域に易剥離剤を塗布することにより形成された易剥離層による易剥離領域（Ｌ１）とこの易剥離領域（Ｌ１）の両側に上層部（５１）と下層部（５２）が接着する接着領域（Ｌ２）とに区画されて互いに積層接着され、この上層部（５１）の易剥離領域（Ｌ１）と接着領域（Ｌ２）の境界線よりやや易剥離領域（Ｌ１）内にハーフカットによる切れ目線（１０）を刻設してなるものである。
Further, the lid material (41) of the present invention is a laminate that does not contain an aluminum foil. As shown in FIG. 2 (A), for example, the laminate is composed of an upper layer portion (51) on the surface and a lower layer on the inner surface. Part (52
) Is an easy peel region (L1) by an easy peel layer formed by applying an easy peel agent to a region near the width of the base of the peel pull tab (44) in the center, and both sides of the easy peel region (L1). The upper layer portion (51) and the lower layer portion (52) are partitioned into an adhesive region (L2) and laminated and adhered to each other, and the upper layer portion (51) has an easily peelable region (L1) and an adhesive region (L2). A cut line (10) by half-cutting is formed in the easily peelable region (L1) slightly from the boundary line.
図１においては剥離部境界のハーフカット加工（１０）は、平行に並んだ２本の波線としてあるが、これらの形状と配置は特に例示した形状に限られるものではない。
たとえばハーフカット加工（１０）の例として、図６には（Ａ）に示した２本の波線以外に（Ｂ）には三角折れ線の例を、（Ｃ）には四角折れ線の例を示した。
さらに、ハーフカット加工（１０）の例として、図７の（Ｄ）には線対称に配置された２本の波線の例を、（Ｅ）には同じく三角折れ線の例を、（Ｆ）には同じく四角折れ線の例を示した。
剥離部境界のハーフカット加工（１０）は、形状としては図２の（Ｂ）に示したような一列の幅（Ｐ）が１ｍｍ以上であることが、枚葉形状での折れ曲がりを防ぐ点から見て好ましい。
In FIG. 1, the half cut processing (10) at the boundary of the peeled portion is two wavy lines arranged in parallel, but the shape and arrangement thereof are not limited to the illustrated shapes.
For example, as an example of half-cut processing (10), FIG. 6 shows an example of a triangular polygonal line in (B) and an example of a square polygonal line in (C) in addition to the two wavy lines shown in (A). .
Further, as an example of half-cut processing (10), FIG. 7D shows an example of two wavy lines arranged symmetrically with respect to a line, FIG. 7E shows an example of a triangular broken line, and FIG. Also showed an example of a square line.
Since the half-cut process (10) at the boundary of the peeled portion has a shape in which the width (P) of one row as shown in FIG. It is preferable to see.
本発明の蓋材の層構成の例を示す断面略図の例を図２に示した。図２の（Ａ）は比較的簡単な構成の場合を、（Ｂ）には別の場合の例を挙げてある。
本発明の蓋材は、図２（Ａ）に示すように、例えば紙層からなる前記上層部（５１）と、内面側から容器のフランジ部にシール適性のあるシーラント層（２７）、基材フィルム層（２９）、上層部（５１）との接着性を持たせるための接着熱可塑性樹脂層（２８）の順に積層されている下層部（５２）とからなる蓋材（４１）である。
An example of a schematic cross-sectional view showing an example of the layer structure of the lid material of the present invention is shown in FIG. FIG. 2A shows an example of a relatively simple configuration, and FIG. 2B shows an example of another case.
As shown in FIG. 2 (A), the lid material of the present invention comprises, for example, the upper layer portion (51) made of a paper layer, a sealant layer (27) having sealability from the inner surface side to the flange portion of the container, a base material A lid member (41) comprising a film layer (29) and a lower layer portion (52) laminated in order of an adhesive thermoplastic resin layer (28) for providing adhesion to the upper layer portion (51).
また図２の（Ｂ）に例示したように、上層部（５１）の層構成は、外面側から、表面フィルム（２４）、紙層（２５）とし、下層部（５２）の層構成は、内面側からシーラント層（２７）、印刷インキなどによる遮光印刷層（２６）、基材フィルム層（２９）、接着熱可塑性樹脂層（２８）の順としてもよい。
この場合には遮光印刷層（２６）を外側すなわち上層部（５１）側に施してもよく、遮光を必要としない内容物の場合は、この遮光層（２６）がない構成であっても構わない。
Moreover, as illustrated in FIG. 2B, the layer configuration of the upper layer portion (51) is the surface film (24) and the paper layer (25) from the outer surface side, and the layer configuration of the lower layer portion (52) is From the inner surface side, the sealant layer (27), the light-shielding printing layer (26) with printing ink, the base film layer (29), and the adhesive thermoplastic resin layer (28) may be used in this order.
In this case, the light-shielding print layer (26) may be provided on the outer side, that is, the upper layer portion (51) side. In the case of contents that do not require light-shielding, the light-shielding layer (26) may be omitted. Absent.
また、本発明の蓋材では、図１（Ａ）に示すように、剥離用プルタブ（４４）の基部の下層部面に下層部内面側から上層部に届く深さの剥離開始ハーフカット（４５）を刻設し、この刻設されたハーフカット（４５）が、上層部に刻設された剥離部境界のハーフカット加工（１０）と直交するようにしたものである。 Moreover, in the lid | cover material of this invention, as shown to FIG. 1 (A), the peeling start half cut of the depth which reaches the upper layer part from the lower layer inner surface side to the lower layer part surface of the base part of peeling pull tab (44) (45 ), And the half-cut (45) thus engraved is perpendicular to the half-cut process (10) at the boundary of the peeled portion engraved in the upper layer portion.
図８は本発明の蓋材の波帯状剥離部分ハーフカット加工の説明図である。図８（Ａ）は上層の一部の剥離前の状態を、（Ｂ）は蓋材の部分開封後の状態を示している。
容器の開封時には、まず、容器のフランジに蓋材（４１）をシールしたところを上面から見た図８（Ａ）に矢印で示したように、剥離用プルタブ（４４）を把持して上方に持ち上げる。これによって剥離開始ハーフカット（４５）から下層部分が切り離されて上層部の剥離部境界のハーフカット加工（１０）に沿って境界線で囲まれた内部の領域のみが波帯状に除去される。その結果、易剥離領域の上層部（５１）が取り去られた部分は、薄い下層部（５２）のみとなる。
FIG. 8 is an explanatory view of the corrugated peeled portion half-cut processing of the lid material of the present invention. FIG. 8A shows a state before peeling a part of the upper layer, and FIG. 8B shows a state after partial opening of the lid.
When opening the container, first, as shown by the arrow in FIG. 8A, where the lid (41) is sealed from the flange of the container, the peeling pull tab (44) is grasped upward. lift. As a result, the lower layer portion is separated from the peeling start half cut (45), and only the inner region surrounded by the boundary line along the half cut processing (10) of the upper layer peeling portion boundary is removed in a wave band shape. As a result, the portion where the upper layer portion (51) of the easy peeling region is removed is only the thin lower layer portion (52).
つぎに開封用プルタブ（４３）を把持して上方に持ち上げる。これによって容器外周縁のフランジから蓋材（４１）が剥離して容器開口部が部分的に開口する。このときに、蓋材（４１）のほぼ中心部まで剥離すると上層部の剥離部境界のハーフカット加工（１０）に沿って境界線で囲まれた内部の領域のみが波帯状に除去された位置に到達する。この位
置で剥離を停止して蓋材を剥離進行方向に折り曲げると図８の（Ｂ）に断面を示した状態で停止する。
Next, the opening pull tab (43) is gripped and lifted upward. As a result, the lid (41) is peeled off from the flange on the outer periphery of the container, and the container opening is partially opened. At this time, when the cover material (41) is peeled to substantially the center, only the inner region surrounded by the boundary line along the half-cut process (10) at the boundary of the peeled portion of the upper layer portion is removed in a wave band shape To reach. When the peeling is stopped at this position and the lid member is bent in the peeling progression direction, the lid is stopped in the state shown in FIG.
このときに、蓋材は上層部が波帯状に剥離除去された領域（４６）でヒンジ状に折れ曲がり開封状態を保持する。このように易剥離領域の上層部（５１）が剥離除去された部分の下層部（５２）は薄いフィルムのみでなるのでデットホールド性に優れたような状態となり、よって折り曲げられたままの状態を保持できるようになる。このようにして開封が完了すると蓋が折り曲げられた状態で容易に安全に熱湯等を容器内に注ぐことができる。
上記上層部が剥離除去された領域（４６）以外では剥離された蓋材の厚みが減っていないので折れ曲がることはない。さらに蓋材（４１）を折り曲げて開封用プルタブをフランジに引っ掛けて完全に仮固定することも可能である。
At this time, the lid member is folded in a hinge shape in the region (46) where the upper layer portion is peeled and removed in a wave band shape and maintains the opened state. Thus, since the lower layer part (52) of the part from which the upper layer part (51) of the easy peeling region is peeled and removed is composed of only a thin film, the state is excellent in the dead hold property, and thus the state of being folded is maintained. It can be held. When the opening is completed in this way, hot water or the like can be poured into the container easily and safely with the lid folded.
Since the thickness of the peeled lid member is not reduced except in the region (46) from which the upper layer portion is peeled and removed, it does not bend. It is also possible to fold the lid (41) and hook the opening pull tab on the flange to completely fix it temporarily.
また、本発明の蓋材の再封は、折り曲げられた易剥離領域内の波帯状の下層部のみの部分を元の平坦な状態に戻すと、この部分に上層部としての紙層がないので熱湯によるカール等もなく自然に平坦な状態となり、この状態を維持できる。
このように再封性に優れるので、麺等を温めほぐすために、蓋の上に重し等を乗せる等の手間をかけずに済む蓋材とすることができる。
In addition, when the lid of the present invention is re-sealed, if only the wavy belt-like lower layer portion in the easily peeled region is returned to the original flat state, there is no paper layer as the upper layer portion in this portion. There is no curling due to hot water, and the surface is naturally flat, and this state can be maintained.
Thus, since it is excellent in resealability, in order to warm noodles etc., it can be set as the lid | cover material which does not need the effort of putting a weight etc. on a lid | cover.
次に、本発明の蓋材に用いる積層体の加工方法の実施形態の一例を説明する。
本発明の蓋材（４１）に用いる積層体の構成要素としては、まず図２（Ａ）に示すように、あらかじめ容器本体（４０）との熱溶着を容易にした低温接着性を有する直鎖状低密度ポリエチレン樹脂からなるシーラント（２７）を基材フィルム（２９）にウレタン系接着剤を介して貼り合せることによって作製した下層部（５２）の一部積層部を作成する。
Next, an example of an embodiment of a processing method of a laminate used for the lid member of the present invention will be described.
As a component of the laminated body used for the lid | cover material (41) of this invention, as shown to FIG. 2 (A), first, the linear chain which has low-temperature adhesiveness which made easy thermal welding with a container main body (40) previously. A partially laminated portion of the lower layer portion (52) prepared by bonding the sealant (27) made of a low-density polyethylene resin to the base film (29) through a urethane adhesive is prepared.
巻取状の紙（２５）にグラビア印刷法にて表裏同一工程で、表面側にウレタン系接着剤層を介してドライラミネート法により延伸ポリエステルフィルム（２４）を貼り合せ、裏面側に易剥離剤を印刷することにより作製された上層部（５１）を、上記の下層部（５２）の一部積層部と、ポリエチレン樹脂（２８）からなる接着熱可塑性樹脂層の押し出しによりエクストルーダーを用いてラミネートすることにより積層材を作製する。 A stretched polyester film (24) is bonded to the wound paper (25) by the dry lamination method through the urethane adhesive layer on the front side in the same process by the gravure printing method on the front and back sides, and the easy release agent on the back side. The upper layer part (51) produced by printing is laminated using an extruder by extruding a partially laminated part of the lower layer part (52) and an adhesive thermoplastic resin layer made of polyethylene resin (28). By doing so, a laminated material is produced.
続いて、このラミネートされた巻取状の積層材を枚葉状に大断ちした後、図１、図２の形状の上層部を貫通する剥離部境界のハ−フカット加工（１０）および下層部を貫通して紙層（２５）に至る剥離開始ハーフカット（４５）を行い（巻取状にてハーフカット加工する場合もある。）、ハーフカット完了後、小断ち・抜き加工を経て本発明の蓋材（４１）を作製する。（ハーフカット加工時に同時に小断ち・抜き加工を行う場合もある。） Subsequently, the laminated winding material is cut into a single sheet, and then the half-cut process (10) and the lower layer portion at the boundary of the peeling portion that penetrates the upper layer portion of the shape shown in FIGS. A peeling start half cut (45) that penetrates to the paper layer (25) is performed (there may be a half cut process in a winding form), and after the half cut is completed, a small cut and a punching process are performed. A lid member (41) is produced. (Small cutting and punching may be performed at the same time as half-cutting.)
そして、この蓋材をあらかじめ成型された容器本体（紙カップ、発泡スチロール、スチロール、ポリプロピレン等からなる容器）に内容物を充填してからヒートシール法にてシールすることによって本発明の蓋材を用いた充填済み容器を作成することが出来る。 Then, the lid material of the present invention was used by filling the lid body with a pre-molded container body (a container made of paper cup, polystyrene foam, polystyrene, polypropylene, etc.) and then sealing with a heat seal method. A filled container can be created.
以下に本発明の蓋材（４１）の材料等を図１、図２を参考にして説明する。まず本発明の蓋材（４１）を構成する上層部（５１）としては、紙層を含み、少なくとも表面が白色で多色印刷適性を有するものが好ましく、例えば坪量５０ｇ／ｍ２〜１２０ｇ／ｍ２ 程度の両アート紙、片アート紙あるいは両面コート紙、片面コート紙などを好適に使用することができ、場合によっては合成紙であってもよい。 The material of the lid material (41) of the present invention will be described below with reference to FIGS. First, as an upper layer part (51) which comprises the cover material (41) of this invention, what has a paper layer and at least the surface is white and has multi-color printing suitability, for example, basic weight 50g / m < 2 > -120g / Both art papers of about m 2 , single-sided art paper, double-sided coated paper, single-sided coated paper, etc. can be suitably used.
また、上層部（５１）の層構成中には図１（Ｂ）に示したように表面フィルム（２４）を含むことも出来る。表面フィルム（２４）は紙層（２５）の保護等の目的で設けられ、延伸ポリエチレンテレフタレートフィルム等のプラスチックフィルムが多く使用される。表面フィルムの厚みは必要な保護性能と加工適性との関係で決められとくに制限はない。 Further, the layer structure of the upper layer portion (51) may include a surface film (24) as shown in FIG. The surface film (24) is provided for the purpose of protecting the paper layer (25), and a plastic film such as a stretched polyethylene terephthalate film is often used. The thickness of the surface film is determined by the relationship between necessary protective performance and processability, and is not particularly limited.
また、本発明の蓋材（４１）の下層部（５２）を構成するシーラント層（２７）としては、例えばヒートシール性に優れる直鎖低密度ポリエチレン（ＬＬＤＰＥ）、低密度ポリエチレン（ＬＤＰＥ）、高密度ポリエチレン（ＨＤＰＥ）、無延伸ポリプロピレン（ＣＰＰ）等のポリオレフィン樹脂あるいはエチレン／酢酸ビニル共重合体（ＥＶＡ）、エチレン／アクリル酸共重合体（ＥＡＡ）、エチレン／メタアクリル酸共重合体（ＥＭＡＡ）等エチレン共重合樹脂のフィルムが好適に用いられ、さらにこれらポリオレフィン樹脂にポリスチレンやポリブデン等からなる、ポリオレフィン樹脂に対し不相溶性成分を混合したものとすることもできる。厚みは２０μｍ〜１００μｍ程度が適当である。
また、エチレン／酢酸ビニル共重合樹脂、エチレン／アクリル酸共重合樹脂等からなるホットメルト接着剤を塗布量１５ｇ／ｍ２〜２５ｇ／ｍ２程度で設けてもよく、これらシーラント層（２７）によって容器本体（４０）のフランジ（４２）との十分な密封性と剥離開封性を可能とすることができる。
Moreover, as a sealant layer (27) which comprises the lower layer part (52) of the cover material (41) of this invention, for example, the linear low density polyethylene (LLDPE) excellent in heat-sealability, low density polyethylene (LDPE), high Polyolefin resin such as density polyethylene (HDPE), unstretched polypropylene (CPP), or ethylene / vinyl acetate copolymer (EVA), ethylene / acrylic acid copolymer (EAA), ethylene / methacrylic acid copolymer (EMAA) An ethylene copolymer resin film is preferably used, and these polyolefin resins may be mixed with an incompatible component for the polyolefin resin, such as polystyrene or polybutene. A thickness of about 20 μm to 100 μm is appropriate.
The ethylene / vinyl acetate copolymer resin, an ethylene / a hot melt adhesive comprising acrylic acid copolymer resin or the like may be provided in a coating weight 15g / m 2 ~25g / m 2 approximately, these sealant layers (27) Sufficient sealing and peeling openability with the flange (42) of a container main body (40) can be made possible.
また、本発明の蓋材（４１）の下層部（５２）を構成する基材フィルム（２９）としては、例えば厚さ６〜１６μｍのポリエチレンテレフタレート（ＰＥＴ）フィルム、厚さ１５〜２５μｍの二軸延伸ポリエチレン（ＯＰＥ）フィルム、二軸延伸ナイロン（ＯＮｙ）フィルム、厚さ１０〜２５μｍの二軸延伸ポリプロピレン（ＯＰＰ）フィルムなどの比較的薄く腰のないフィルムが挙げられ、サイズや内容物等によって適宜選定することができる。 Moreover, as a base film (29) which comprises the lower layer part (52) of the lid | cover material (41) of this invention, a polyethylene terephthalate (PET) film with a thickness of 6-16 micrometers, for example, biaxial with a thickness of 15-25 micrometers Relatively thin films such as stretched polyethylene (OPE) film, biaxially stretched nylon (ONy) film, and biaxially stretched polypropylene (OPP) film having a thickness of 10 to 25 μm can be mentioned. Depending on the size and contents, etc. Can be selected.
さらにまた、本発明の蓋材（４１）の下層部（５２）を構成する接着熱可塑性樹脂層（２８）としては、例えば熱溶融された直鎖低密度ポリエチレン（ＬＬＤＰＥ）、低密度ポリエチレン（ＬＤＰＥ）とエチレン／メタアクリル酸共重合樹脂（ＥＭＡＡ）の混合樹脂等を厚さ５μｍ〜２０μｍに押出してラミネート層としたものなどが挙げられる。 Furthermore, examples of the adhesive thermoplastic resin layer (28) constituting the lower layer portion (52) of the lid material (41) of the present invention include, for example, heat-melted linear low density polyethylene (LLDPE) and low density polyethylene (LDPE). ) And an ethylene / methacrylic acid copolymer resin (EMAA) mixed resin or the like is extruded to a thickness of 5 μm to 20 μm to form a laminate layer.
また、必要に応じて設けられる遮光印刷層（２６）としては、カーボン入りのインキでもよいが、前記基材フィルム（２９）と接着熱可塑性樹脂層（２８）とを接着させる目的からエチレン／メタアクリル酸共重合樹脂（ＥＭＡＡ）やウレタン等のアンカーコート剤を混合したものとすることもでき、グラビア法等で塗布して得られる。 The light-shielding printing layer (26) provided as necessary may be carbon-containing ink. For the purpose of bonding the base film (29) and the adhesive thermoplastic resin layer (28), ethylene / meta An acrylic acid copolymer resin (EMAA) or an anchor coating agent such as urethane can be mixed, and can be obtained by applying by a gravure method or the like.
そのほかに、本発明の蓋材（４１）の下層部（５２）あるいは上層部（５１）を構成するたとえばガスバリア層等の層を必要に応じて設けることが出来る。
ガスバリア層としては、あるいは、ポリ塩化ビニリデンフィルム、ポリビニルアルコールフィルム、エチレンビニルアルコール共重合体フィルム、ガスバリア性ナイロンフィルム、ガスバリア性ポリエチレンテレフタレートフィルム等のガスバリア性フィルムや、ＰＥＴフィルム等に酸化アルミニウムや酸化珪素等の無機酸化物を蒸着させた無機酸化物蒸着フィルム、あるいは、ポリ塩化ビニリデンコーティング、水溶性樹脂と無機層状化合物を含有する被膜や金属アルコキシドあるいはその加水分解物とイソシアネート化合物を反応させた被膜からなる樹脂層などのガスバリアコーティング層を用いることができる。
In addition, a layer such as a gas barrier layer constituting the lower layer portion (52) or the upper layer portion (51) of the lid member (41) of the present invention can be provided as necessary.
As a gas barrier layer, or a gas barrier film such as a polyvinylidene chloride film, a polyvinyl alcohol film, an ethylene vinyl alcohol copolymer film, a gas barrier nylon film, a gas barrier polyethylene terephthalate film, an aluminum oxide or a silicon oxide on a PET film, etc. From inorganic oxide vapor-deposited films deposited with inorganic oxides such as polyvinylidene chloride coatings, coatings containing water-soluble resins and inorganic layered compounds, and coatings obtained by reacting metal alkoxides or their hydrolysates with isocyanate compounds A gas barrier coating layer such as a resin layer can be used.
さらに、本発明の蓋材（４１）を構成する易剥離層（３０）に用いる易剥離剤としては、例えばニトロセルロース（硝化綿）系樹脂、ウレタン系樹脂、ポリアミド樹脂あるいはこれら樹脂の混合物を主体とし、これらにポリエチレンワックスやシリコン等を相溶性を考慮して混合したものなどが挙げられる。これらを易剥離剤としてグラビア法あるいはスクリーン法等にて易剥離領域（Ｌ１）に塗布して易剥離層（３０）を得ることができる。 Furthermore, as an easy release agent used for the easy release layer (30) constituting the lid material (41) of the present invention, for example, a nitrocellulose (nitrified cotton) resin, a urethane resin, a polyamide resin or a mixture of these resins is mainly used. And a mixture of polyethylene wax, silicon and the like in consideration of compatibility. An easy peeling layer (30) can be obtained by applying these to the easy peeling region (L1) by a gravure method or a screen method as an easy peeling agent.
＜実施例１＞
図２（Ｂ）に示すように、上層部（５１）として、表面に絵柄等が印刷された坪量１０
４．７ｇ／ｍ２の片アート紙を用い、その裏面に、ニトロセルロース５０重量部にポリエチレンワックス５０重量部をブレンドした易剥離剤を幅１０ｍｍの帯状の易剥離領域（Ｌ１）に塗布乾燥して易剥離層（３０）を形成した。
<Example 1>
As shown in FIG. 2 (B), a basis weight of 10 having a pattern or the like printed on the surface as the upper layer portion (51).
Using a 4.7 g / m 2 piece of art paper, on the back side, an easy release agent blended with 50 parts by weight of nitrocellulose and 50 parts by weight of polyethylene wax was applied to a strip-like easy release region (L1) having a width of 10 mm and dried. An easy release layer (30) was formed.
一方で基材フィルム（２９）として厚さ１２μｍの両面コロナ処理ポリエチレンテレフタレート（ＰＥＴ）フィルムを用い、その片面にウレタン系のアンカーコート剤を介して厚さ４５μｍのポリエチレン用イージーピール層をラミネートし、もう一方の片面にウレタン系のカーボン入りアンカーコート剤とそれを挟んで酸化チタン入りアンカーコート剤を遮光印刷層（２６）として重ねて塗布乾燥し、この遮光印刷層（２６）面と、上記で得た上層部（５１）の易剥離層（３０）面との間に熱溶融された低密度ポリエチレン（ＬＤＰＥ）を厚さ１５μｍの接着熱可塑性樹脂層（２８）として押し出してラミネートし、即は席食品用容器の蓋材に用いる積層体を得た。 On the other hand, a double-sided corona-treated polyethylene terephthalate (PET) film having a thickness of 12 μm is used as the base film (29), and an easy peel layer for polyethylene having a thickness of 45 μm is laminated on one side thereof via a urethane-based anchor coat agent. On the other side, an anchor coating agent containing urethane-based carbon and an anchor coating agent containing titanium oxide sandwiching it as a light-shielding printing layer (26) are applied and dried, and this light-shielding printing layer (26) surface and above A low-density polyethylene (LDPE) melted between the surface of the easily peelable layer (30) of the obtained upper layer portion (51) is extruded and laminated as an adhesive thermoplastic resin layer (28) having a thickness of 15 μm. The laminated body used for the lid | cover material of the container for seat foods was obtained.
続いて図１（Ａ）に示すように、上記で得られた積層体の易剥離領域（Ｌ１）内両側に、波線状の２本のハーフカット（１０）を上層部（５１）に施し、それによって囲まれた波帯状の易剥離領域（Ｌ１）方向の周縁先端に剥離用プルタブ（４４）と、その波帯状の易剥離領域（Ｌ１）と直交する方向の周縁に開封用プルタブ（４３）と、該剥離用プルタブ（４４）の基部の裏面で、下層部（５２）にハーフカット（４５）を施した直径９６．５ｍｍの蓋材を得た。 Subsequently, as shown in FIG. 1 (A), two wavy half-cuts (10) are applied to the upper layer part (51) on both sides in the easy peeling region (L1) of the laminate obtained above, The peeling pull tab (44) at the peripheral tip in the direction of the corrugated easy peelable region (L1) surrounded by it, and the pull pull tab (43) at the peripheral edge in the direction orthogonal to the corrugated easy peelable region (L1) Then, on the back surface of the base portion of the peeling pull tab (44), a cover material having a diameter of 96.5 mm in which the lower layer portion (52) was half-cut (45) was obtained.
このとき、波線状の２本のハーフカット（１０）は曲率半径１０ｍｍの円周を連続させた波線状のハーフカットとし、２本の配置間隔は最狭部で５ｍｍとし、波の高低差すなわち１本の幅（Ｐ）は２ｍｍとした。なお易剥離領域（Ｌ１）の位置は蓋の中央より開封用プルタブ（４３）のやや逆側に来るようにした。 At this time, the two wavy half-cuts (10) are wavy half-cuts in which the circumference having a curvature radius of 10 mm is continuous, the spacing between the two is 5 mm at the narrowest part, and the wave height difference, that is, One width (P) was 2 mm. The position of the easy peeling region (L1) was set to be slightly on the opposite side of the opening pull tab (43) from the center of the lid.
＜比較例１＞
波線状の２本のハーフカット（１０）に代えて直線状の２本のミシン目を設けた以外は実施例１と同様にして蓋材を得た。
<Comparative Example 1>
A lid member was obtained in the same manner as in Example 1 except that two straight perforations were provided instead of the two wavy half-cuts (10).
＜比較例２＞
波線状の２本のハーフカット（１０）に代えて直線状の２本のハーフカットを設けた以外は実施例１と同様にして蓋材を得た。
<Comparative example 2>
A lid was obtained in the same manner as in Example 1 except that two straight half-cuts were provided instead of the two wavy half-cuts (10).
上記で得られた即席食品用容器の蓋材を紙カップ（４０）のフランジ（４２）のポリエチレンで被覆された上部にヒートシールして密封し、即席麺カップのテスト試料を作製した。
このテスト試料の開封に際するデッドホールド性（熱湯の注ぎ易さ）は、図４、図８に示すように、開封用プルタブ（４３）を引っ張り上げながらカップのフランジ（４２）から剥離して、中央の易剥離領域の上層部が剥離除去された領域（４６）で上層部（５１）が切断され除去された部分で折り曲げられるとそのままの状態を維持するもので、熱湯の注ぎ易いものであった。
またその再封性（熱湯を注いだ後、麺を温め軟らかくする待ち時間の再封のし易さ）は、上記の図に示すように、上層部（５１）が切断され除去された部分では薄い樹脂フィルムのみでできているので熱（熱湯）によるカールがないので元の平坦な状態に戻すとそのままの状態を維持し、特に重しなどを必要としない所謂再封性に優れるものであった。
The lid for the instant food container obtained above was heat-sealed and sealed to the top of the flange (42) of the paper cup (40) covered with polyethylene to prepare a test sample of the instant noodle cup.
As shown in FIGS. 4 and 8, the dead hold property (ease of pouring hot water) at the time of opening the test sample is peeled off from the flange (42) of the cup while pulling up the pull tab (43) for opening. When the upper layer portion (51) is cut and removed in the region (46) where the upper layer portion of the central easy peeling region is peeled and removed, the state is maintained as it is, and hot water can be poured easily. there were.
In addition, its resealability (ease of resealing the waiting time to warm and soften the noodles after pouring hot water) is, as shown in the above figure, in the part where the upper layer part (51) is cut and removed Since it is made of only a thin resin film, there is no curling due to heat (hot water), so when it is returned to its original flat state, it remains as it is, and so-called resealability that does not particularly require weight is excellent. It was.
さらに、上記のテスト試料を用いて剥離のし易さと枚葉状態での折れを評価した。
実施例１で作成したテスト試料では剥離のし易さは抵抗なく良好であり、枚葉状態での折れも起こらず良好であった（○）。
比較例１のミシン目仕様のテスト試料では剥離のし易さはミシン目のつなぎ抵抗があり
やや不良であったが、枚葉状態での折れは起こらず良好であった（△）。比較例２で作成したテスト試料では剥離のし易さは抵抗なく良好であったが、枚葉状態での折れ曲がりが起こって作業性にやや劣る結果となった（△）。
結果を表１に示した。
In the test sample prepared in Example 1, the ease of peeling was good without resistance, and it was good with no breakage in a single wafer state (◯).
In the test sample of the perforation specification of Comparative Example 1, the ease of peeling was slightly poor because of the joint resistance of the perforation, but it was good (Δ) because no breakage occurred in the single wafer state. In the test sample prepared in Comparative Example 2, the ease of peeling was good without resistance, but bending in a single wafer state occurred and the workability was slightly inferior (Δ).
The results are shown in Table 1.
以上のように、構成中にアルミニウム箔を含まないので、廃棄物に係わる環境問題の危惧がなく、かつ金属探知機による検査が可能としたなっている本発明の蓋材によれば、開封に際し、折り曲げられたままの状態を維持できる性質、即ちデットホールド性を有し、再封に際し、折り曲げられた部分を元に戻すと、この部分に紙層がないのでカールが無くなり平坦な状態に戻り易くなる所謂再封性にも優れる蓋材とすることができた。 As described above, since the aluminum foil is not included in the configuration, there is no risk of environmental problems related to waste, and the lid material of the present invention that can be inspected by a metal detector can be opened. , Has the property of maintaining the folded state, that is, the dead hold property, and when resealed, when the folded part is returned to its original state, there is no paper layer in this part, so there is no curl and the flat state is restored. It was possible to obtain a lid material that is easily so-called resealable.
さらに、ハーフカットによる切離部を直線状に形成した場合に比べて充填時に蓋材が折れて不具合が起こることのない蓋材とすることが出来た。また、ミシン目状のカットによる切離部を直線状に形成した場合に比べて、開封時に切り取り易く断面が荒れない蓋材とすることが出来た。 Furthermore, compared with the case where the cut-off part by the half cut is formed in a straight line shape, the lid member can be broken so that no trouble occurs when filling. Moreover, compared with the case where the separation part by perforated cut was formed in a straight line shape, it was possible to provide a lid material that was easy to cut at the time of opening and the cross section was not rough.
本発明の蓋材は、内容物の充填時に枚葉供給されて容器にシールされ開封時に容器からピールされる蓋としてアルミニウム箔を用いないでも部分剥離中に元に戻らないデッドホールド性を発現して使い易い開封性および再封性を確保できる機構を持った蓋として好適に使用できる。 The lid material of the present invention expresses a dead hold property that does not return to the original state during partial peeling even if aluminum foil is not used as a lid that is supplied in a single sheet when filled with contents, sealed in a container, and peeled from the container when opened. It can be suitably used as a lid having a mechanism capable of ensuring easy opening and resealability.
Ｐ…一本のハーフカットの幅
Ｑ…蓋の中心
Ｌ１…易剥離領域
Ｌ２…接着領域
１０…剥離部境界のハーフカット加工
１１…剥離部境界のミシン目加工
２４…表面フィルム
２５…紙層
２６…遮光印刷層
２７…シーラント層
２８…接着熱可塑性樹脂層
２９…基材フィルム
３０…易剥離層
４０…容器本体
４１…蓋材
４１’…蓋材
４２…フランジ
４３…開封用プルタブ
４４…剥離用プルタブ
４５…剥離開始ハーフカット
４６…上層部が剥離除去された領域
５１…上層部
５２…下層部
P ... Width of one half cut Q ... Lid center L1 ... Easy peeling region L2 ...
Claims (6)
前記積層体は、下層部と上層部とが、中央に前記剥離用タブの基部の幅近傍の所定の領域に易剥離剤を塗布することにより形成された易剥離層による易剥離領域と該易剥離領域以外の接着領域とに区画されて互いに積層接着され、易剥離領域と接着領域の境界線よりやや易剥離領域に入り込んだ両側の上層部にハーフカットによる非直線状の切り目を刻設してなることを特徴とする蓋材。 It is a laminated body that does not contain aluminum foil and is supplied with a single sheet at the time of filling and sealed and sealed at the upper end opening of the container body, and has a peeling tab and an opening tab on the outer periphery, both tabs being approximately from the center. In the lid provided at the 90 ° position,
In the laminate, the lower layer portion and the upper layer portion have an easy peel region formed by an easy peel layer formed by applying an easy peel agent to a predetermined region in the vicinity of the width of the base of the peel tab at the center, and the easy peel portion. Cut into non-linear cuts by half-cuts on the upper layer on both sides that are divided and bonded to each other by bonding areas other than the peeling area, and entered the easy peeling area slightly from the boundary between the easy peeling area and the bonding area. The lid material characterized by comprising.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017091840A1 (en) * | 2015-12-02 | 2017-06-08 | Constantia Teich Gmbh | Two-layer circuit board |
| GB2565065A (en) * | 2017-07-28 | 2019-02-06 | Sirap Uk Ltd | An improved food container lid and method of manufacturing the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002037311A (en) * | 2000-07-31 | 2002-02-06 | Toppan Printing Co Ltd | Lid member for instantaneous food container |
| JP2006298380A (en) * | 2005-04-15 | 2006-11-02 | Toppan Printing Co Ltd | Lid having resealed condition maintaining function |
| JP2010089804A (en) * | 2008-10-06 | 2010-04-22 | Toppan Printing Co Ltd | Lid material, and container using the same |
| JP2013141999A (en) * | 2012-01-12 | 2013-07-22 | Toppan Printing Co Ltd | Partially openable lid member and packaging body for storing powder and granular material |
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2012
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002037311A (en) * | 2000-07-31 | 2002-02-06 | Toppan Printing Co Ltd | Lid member for instantaneous food container |
| JP2006298380A (en) * | 2005-04-15 | 2006-11-02 | Toppan Printing Co Ltd | Lid having resealed condition maintaining function |
| JP2010089804A (en) * | 2008-10-06 | 2010-04-22 | Toppan Printing Co Ltd | Lid material, and container using the same |
| JP2013141999A (en) * | 2012-01-12 | 2013-07-22 | Toppan Printing Co Ltd | Partially openable lid member and packaging body for storing powder and granular material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017091840A1 (en) * | 2015-12-02 | 2017-06-08 | Constantia Teich Gmbh | Two-layer circuit board |
| GB2565065A (en) * | 2017-07-28 | 2019-02-06 | Sirap Uk Ltd | An improved food container lid and method of manufacturing the same |
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