【０００１】
【発明の属する技術分野】
本発明は、熱湯を注いで調理するインスタント焼そばやインスタント生麺などを収容した、発泡スチロール製などのトレー状容器５０に被せて熱融着する、複数の湯切り孔ｃ、ｃ、ｃ、…の形成が確実であって、傾けるだけで、簡単に残余の熱湯を湯切りすることができる湯切り機能付の蓋材に関する。
【０００２】
【従来の技術】
従来から、熱湯を注いで調理するインスタント焼そば用などの傾けるだけで残余の熱湯を湯切りすることができる、図４に示すような適度の強度や剛性などを有する紙積層材料製などの外蓋材２０と、各種バリアー性や熱融着性などを有する樹脂積層材料製などの内蓋材３０とを、部分的に設けた剥離剤層４０を介して積層して成る湯切りする方向（図４では右から左）の下流側の（図４Ｃに斜線で示す）湯切り孔を形成する領域の下流端辺に湯切りつまみａを設け、開蓋する方向（図４では右から左）の上流端辺に開蓋つまみｂを有する円形状又は角を丸めた長方形状の湯切り機能付蓋材であって、外蓋材２０の湯切り孔を形成する領域の上流端に、この領域を区画する切れ目線ｄを設け、また内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間に、内蓋材３０を切断する切れ目線ｆを設け、さらに内蓋材３０の湯切り孔を形成する領域の下流部分に、湯切り孔を形成する複数の円形切れ目線ｃ、ｃ、ｃ、…を設け、この複数の円形切れ目線ｃ、ｃ、ｃ、…の内側を除いた湯切り孔を形成する領域に、部分的に設けた剥離剤層４０を介して、この外蓋材２０と内蓋材３０とを積層した湯切り機能付の蓋材（特開２０００−１０９１４１号公報を参照）があり、図４Ｂに示すようにインスタント焼そばなどを収容した発泡スチロール製などのトレー状容器５０に被せ、このトレー状容器５０のフランジｇに周辺部を熱融着した蓋材として広く用いられている。
【０００３】
この従来の発泡スチロール製などのトレー状容器５０に被せて熱融着した、図４に示す湯切り機能付の蓋材については、湯切り機能付の蓋材の開蓋つまみｂをやゝ強く引張って、外蓋材２０に設けた切れ目線ｄ付近まで開蓋して、熱湯を注いで調理（閉蓋して３分間程度放置）した後に、湯切りする方向の下流端辺に設けた湯切りつまみａを引張って、内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間に設けた切れ目線ｆを切断して、図４Ｃに斜線で示す湯切り孔を形成する領域に設けた剥離剤層４０を剥離しながら、この領域を区画する切れ目線ｄを切断し、内蓋材３０を残して、湯切り孔を形成する領域の外蓋材２０を除去するだけで、図４Ｄに示すように、剥離剤層４０を除いた複数の円形切れ目線ｃ、ｃ、ｃ、…の内側が、この外蓋材２０とともに除去されて開孔し、この領域に残した内蓋材３０に簡単に複数の湯切り孔ｃ、ｃ、ｃ、…を形成することができる湯切り機能付の蓋材であって、続いて、湯切りする方向の下流側の湯切り孔を形成する領域に残した内蓋材３０に、複数の湯切り孔ｃ、ｃ、ｃ、…を形成したトレー状容器５０を湯切りする方向の下流側に傾けるだけで、簡単に残余の熱湯を湯切りすることができる湯切り機能付の蓋材である。
【０００４】
【特許文献１】
特開２０００−１０９１４１号公報
【０００５】
【発明が解決しようとする課題】
ところが、従来の発泡スチロール製などのトレー状容器５０に被せて熱融着した、図４に示す湯切り機能付の蓋材については、湯切りする方向の下流端辺に設けた（開蓋つまみを兼ねた）湯切りつまみａを引張って、内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間に設けた切れ目線ｆを切断して、図４Ｃに斜線で示す湯切り孔を形成する領域に設けた剥離剤層４０を剥離する時に、通常は、この内蓋材３０に設けた切れ目線ｆとトレー状容器５０のフランジｇの外周端とが、図４Ｂに示すように一致した位置に被せて熱融着されているものの、被せて熱融着する工程のばらつきなどで、図５Ａに示すように、内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間に設けた切れ目線ｆが、トレー状容器５０のフランジｇの外周端の内側にずれて熱融着された場合、湯切りつまみａを引張ることによって、発泡スチロール製などのトレー状容器５０のフランジｇの上面側が、図５Ｂに示す材料破壊を起し易いことが問題であって、内蓋材３０に設けた切れ目線ｆが切断されない恐れがあって、湯切り孔を形成する領域に設けた剥離剤層４０を剥離することが難しいために、この領域の内蓋材３０が外蓋材２０とともに除去されて、湯切りする方向の下流側の湯切り孔を形成する領域に、全く湯切り孔を形成することができない恐れがあった。
【０００６】
そこで、本発明の目的は、熱湯を注いで調理するインスタント焼そばやインスタント生麺などを収容した、発泡スチロール製などのトレー状容器５０に被せて熱融着する、湯切り孔を形成する領域に設けた剥離剤層４０を確実に剥離して、この領域に残した内蓋材３０に、確実に複数の湯切り孔ｃ、ｃ、ｃ、…を形成することができる、傾けるだけで、簡単に残余の熱湯を湯切りすることができる湯切り機能付の蓋材を提供することにある。
【０００７】
【課題を解決するための手段】
本発明の湯切り機能付の蓋材は、図１、図３に示すように、外蓋材２０と内蓋材３０とを、部分的に設けた剥離剤層４０を介して積層して成る、湯切りする方向（図１、図３では右から左）の下流側の（図３Ａに斜線で示す）湯切り孔を形成する領域の下流端辺に湯切りつまみａを設け、開蓋する方向（図１、図３では右から左）の上流端辺に開蓋つまみｂを有する円形状又は角を丸めた長方形状（図１、図３では円形状）の湯切り機能付の蓋材であって、内蓋材３０の湯切り孔を形成する領域の下流部分に、湯切り孔を形成する複数（図１、図３では７個）の円形切れ目線ｃ、ｃ、ｃ、…を設けて、この複数の円形切れ目線ｃ、ｃ、ｃ、…の内側を除いた湯切り孔を形成する領域と、この領域の下流端辺に設けた湯切りつまみａの部分とに、部分的に設けた剥離剤層４０を介して、この外蓋材２０と内蓋材３０とを積層したことを特徴とする湯切り機能付の蓋材である。
【０００８】
本発明の湯切り機能付の蓋材においては、熱湯を注いで調理するインスタント焼そばやインスタント生麺などを収容した、発泡スチロール製などのトレー状容器５０に被せて熱融着する、外蓋材２０と内蓋材３０とを、部分的に設けた剥離剤層４０を介して積層して成る、湯切りする方向の下流側の、湯切り孔を形成する領域の下流端辺に湯切りつまみａを設け、開蓋する方向の上流端辺に開蓋つまみｂを有する円形状又は角を丸めた長方形状の図４に示す従来の湯切り機能付の蓋材と同様の湯切り機能付の蓋材であって、内蓋材３０の湯切り孔を形成する領域の下流部分に、湯切り孔を形成する複数の円形切れ目線ｃ、ｃ、ｃ、…を設けて、この複数の円形切れ目線ｃ、ｃ、ｃ、…の内側を除いた湯切り孔を形成する領域と、この領域の下流端辺に設けた湯切りつまみａの部分とに、部分的に設けた剥離剤層４０を介して、この外蓋材２０と内蓋材３０とを積層したことによって、湯切り機能付の蓋材の開蓋つまみｂをやゝ強く引張って、途中まで開蓋し、熱湯を注いで調理した後に、湯切りする方向の下流側の湯切り孔を形成する領域の下流端辺に設けた湯切りつまみａを、この湯切りつまみａの部分に設けた剥離剤層４０を剥離しながら引張って、図３Ａに斜線で示す湯切り孔を形成する領域に設けた剥離剤層４０を剥離し、内蓋材３０を残して、湯切り孔を形成する領域の外蓋材２０を除去するだけで、図３Ｂに示すように、剥離剤層４０を除いた複数の円形切れ目線ｃ、ｃ、ｃ、…の内側が、この外蓋材２０とともに除去されて開孔して、この領域に残した内蓋材３０に、簡単に複数の湯切り孔ｃ、ｃ、ｃ、…を形成することができ、従来と同様の湯切り機能付の蓋材であって、続いて、湯切りする方向の下流側の湯切り孔を形成する領域に残した内蓋材３０に、複数の湯切り孔ｃ、ｃ、ｃ、…を形成したトレー状容器５０を、同様に湯切りする方向の下流側に傾けるだけで、簡単に残余の熱湯を湯切りすることができる湯切り機能付の蓋材を提供することができる。
【０００９】
しかも、本発明の湯切り機能付の蓋材においては、図４に示す従来の湯切り機能付の蓋材とは異なって、複数の円形切れ目線ｃ、ｃ、ｃ、…の内側を除いた湯切り孔を形成する領域に加えて、この領域の下流端辺に連続して設けた湯切りつまみａの部分に、部分的に設けた剥離剤層４０を介して、外蓋材２０と内蓋材３０とを積層したことによって、湯切りする方向の下流側の、湯切り孔を形成する領域の下流端辺に設けた湯切りつまみａを、この湯切りつまみａの部分に設けた剥離剤層４０を剥離しながら、内蓋材３０を残して、剥離した湯切りつまみａの外蓋材２０のみを引張って、この湯切りつまみａの部分に連続した、図３Ａに斜線で示す湯切り孔を形成する領域の剥離剤層４０を確実に剥離することができるために、図５Ａに示すように、内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間が、トレー状容器５０のフランジｇの外周端の内側にずれて熱融着された場合であっても、湯切りつまみａの外蓋材２０のみを引張ることによって、発泡スチロール製などのトレー状容器５０のフランジｇの上面側が、図５Ｂに示す材料破壊を起す恐れが全くない、内蓋材３０を残して、湯切り孔を形成する領域の外蓋材２０を除去するだけで、この領域に残した内蓋材３０に、確実に複数の湯切り孔ｃ、ｃ、ｃ、…を形成することができる湯切り機能付の蓋材を提供することができる。
【００１０】
加えて、本発明の湯切り機能付の蓋材は、図１Ｃに示すように、内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間を切断して、外蓋材２０を残して、湯切りつまみａの部分の内蓋材３０を除去したことを特徴とする湯切り機能付の蓋材である。
【００１１】
本発明の湯切り機能付の蓋材においては、内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間を切断して、外蓋材２０を残して、湯切りつまみａの部分の内蓋材３０を除去したことによって、湯切りする方向の下流側の、湯切り孔を形成する領域の下流端辺に設けた湯切りつまみａの、内蓋材３０を除去した外蓋材２０のみを引張って、この湯切りつまみａの部分に連続した、図３Ａに斜線で示す湯切り孔を形成する領域の剥離剤層４０を確実に剥離することができるために、前述した湯切り機能付の蓋材と同様に、内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間が、トレー状容器５０のフランジｇの外周端の内側にずれて熱融着された場合であっても、湯切りつまみａの外蓋材２０のみを引張ることによって、発泡スチロール製などのトレー状容器５０のフランジｇの上面側が、材料破壊を起す恐れが全くない湯切り機能付の蓋材を得ることができる。
【００１２】
また、本発明の湯切り機能付の蓋材は、図１、図３に示すように、外蓋材２０の湯切り孔を形成する領域の上流端に、この領域を区画する切れ目線ｄを設けたことを特徴とする湯切り機能付の蓋材である。
【００１３】
本発明の湯切り機能付の蓋材においては、外蓋材２０の湯切り孔を形成する領域の上流端に、この領域を区画する切れ目線ｄを設けたことによって、湯切り機能付の蓋材の開蓋つまみｂをやゝ強く引張って、外蓋材２０に設けた切れ目線ｄ付近まで開蓋して、熱湯を注いで閉蓋して３分間程度放置した後に、湯切りする方向の下流側の、湯切り孔を形成する領域の下流端辺に設けた湯切りつまみａを、この湯切りつまみａの部分に設けた剥離剤層４０を剥離しながら引張って、図３Ａに斜線で示す湯切り孔を形成する領域に設けた剥離剤層４０を剥離しながら、この領域を区画する切れ目線ｄを切断して、内蓋材３０を残して、湯切り孔を形成する領域の外蓋材２０を、湯切り機能付の蓋材を閉蓋した状態で除去することができるために、この領域に残した内蓋材３０に、複数の湯切り孔ｃ、ｃ、ｃ、…を形成したトレー状容器５０を、閉蓋した状態で湯切りする方向の下流側に傾けて、安全に残余の熱湯を湯切りすることができる湯切り機能付の蓋材を得ることができる。
【００１４】
【発明の実施の形態】
本発明の湯切り機能付蓋材を、実施の形態に沿って以下に詳細に説明すれば、本発明の湯切り機能付蓋材を構成する外蓋材２０は、図２（Ａ）、（Ｂ）に示すように、例えばポリエステル（ＰＥＴ ）や延伸ポリプロピレン（Ｏ−ＰＰ）などの、引張り強度などが優れた６〜３０μｍ程度の表面樹脂フィルム層２と、表面に美麗な印刷をした上質紙やアート紙などの、適度の剛性などを有する６０〜１３０ｇ／ｍ２ 程度の紙材料層３とを、図示していない接着剤層を介するなどして適宜に積層した、適度の強度や剛性などを有する外蓋材２０を、特に制約なく用いることができる。
【００１５】
内蓋材３０については、図２（Ａ）、（Ｂ）に示すように、例えば低密度ポリエチレン（ＬＤＰＥ）などの、熱融着性などを有する１２〜３０μｍ程度の接着性樹脂層４と、各種バリアー性などが優れた６〜１８μｍ程度のアルミニウム箔層５と、例えばエチレンーメタアクリル酸共重合体（ＥＭＡＡ）やエチレンー酢酸ビニル共重合体（ＥＶＡ ）などの、熱融着性とイージーピール（熱融着した後に剥がすことができる）性とを有する２０〜６０μｍ程度のシーラント層６とを、この接着性樹脂層４とシーラント層６とをそれぞれ熱溶融するなどして適宜に積層した、各種バリアー性や熱融着性などを有する内蓋材３０を、特に制約なく用いることができる。
【００１６】
剥離剤層４０については、図２（Ａ）、（Ｂ）に示すように、例えば表面に美麗な印刷をした紙材料層３の裏面に、通常のワックス系剥離ニスやシリコン系剥離ニスなどの、前述した接着性樹脂層４との剥離強度が１０〜１５０ｇ／１５ｍｍ幅程度の剥離剤層４０を、図３Ａに斜線で示す湯切り孔を形成する領域の複数の円形切れ目線ｃ、ｃ、ｃ、…の内側を除いた部分と、この領域の下流端辺に設けた湯切りつまみａの部分とに印刷するなどして部分的に設けることができる。
【００１７】
また、本発明の湯切り機能付蓋材における、前述した表面樹脂フィルム層２と紙材料層３とを積層した外蓋材２０と、前述した接着性樹脂層４とアルミニウム箔層５とシーラント層６とを積層した内蓋材３０とを、部分的に設けた剥離剤層４０を介して積層する方法については、後述する実施例に示すように、引張り強度などが優れた表面樹脂フィルム層２と、裏面に剥離剤層４０を部分的に設けた、適度の剛性などを有する紙材料層３とを、図示していない接着剤層を介して、通常のドライラミネーション方法などで積層して、湯切り孔を形成する領域を区画する切れ目線ｄを貫通して設けるなどした後に、この紙材料層３の裏面に、熱融着性などを有する接着性樹脂層４と、各種バリアー性などが優れたアルミニウム箔層５と、熱融着性とイージーピール性とを有するシーラント層６とを、この接着性樹脂層４とシーラント層６とをそれぞれ熱溶融して、通常の熱押出しラミネーション方法などで同時に積層することができる。
【００１８】
加えて、本発明の湯切り機能付蓋材における、内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間を切断して、外蓋材２０を残して、湯切りつまみａの部分の内蓋材３０を除去する方法については、内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間に、図示していない内蓋材３０を切断する切れ目線を設けて、複数の円形切れ目線ｃ、ｃ、ｃ、…の内側を除いた湯切り孔を形成する領域と、この領域の下流端辺に設けた湯切りつまみａの部分とに、部分的に設けた剥離剤層４０を介して、外蓋材２０と内蓋材３０とを積層することによって、後述する実施例に示すように、連続した巻取りフィルム状で機械的に、この図示していない切れ目線を切断しながら、湯切りつまみａの部分に設けた剥離剤層４０を剥離して、外蓋材２０を残して、この湯切りつまみａの部分の内蓋材３０を除去した後に、湯切りする方向の下流側の、湯切り孔を形成する領域の下流端辺に湯切りつまみａを設けた、開蓋する方向の上流端辺に開蓋つまみｂを有する円形状又は角を丸めた長方形状に切断することができる。
【００１９】
【実施例】
以下に、本発明の湯切り機能付蓋材の具体的実施例を説明する。
＜実施例１＞
図１Ａは、本発明の実施例１における、湯切り機能付の蓋材の平面図であって、図１Ｂ、Ｃは、その断面説明図である。
また図２Ａ、Ｂは、本発明の実施例１における、湯切り機能付の蓋材の拡大断面説明図である。
さらに図３Ａは、本発明の実施例１における、複数の湯切り孔ｃ、ｃ、ｃ、…を形成した湯切り機能付の蓋材の平面図であって、図３Ｂ、Ｃは、その断面説明図である。
【００２０】
本発明の請求項１、２、３に対応する実施例１の湯切り機能付の蓋材は、表面樹脂フィルム層２と紙材料層３とを積層した外蓋材２０と、接着性樹脂層４とアルミニウム箔層５とシーラント層６とを積層した内蓋材３０とを、部分的に設けた剥離剤層４０を介して積層して成る、湯切りする方向（図１、図３では右から左 ）の下流側の、（図３Ａに斜線で示す）湯切り孔を形成する領域の（切れ目線ｄの近傍の）下流端辺に湯切りつまみａを設けた、開蓋する方向（図１、図３では右から左）の上流端辺に開蓋つまみｂを有する、図１Ａに示す１８０ｍｍφの円形状の湯切り機能付の蓋材であって、外蓋材２０の湯切り孔を形成する領域の上流端に、この領域を区画する直線状の切れ目線ｄを設けて、また内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間に、図示していない内蓋材３０を切断する切れ目線を設けて、さらに内蓋材３０の湯切り孔を形成する領域の下流部分に、湯切り孔を形成する７個の６ｍｍφの円形切れ目線ｃ、ｃ、ｃ、…を設けて、この７個の円形切れ目線ｃ、ｃ、ｃ、…の内側を除いた湯切り孔を形成する領域と、この領域の下流端辺に設けた湯切りつまみａの部分とに、部分的に設けた剥離剤層４０を介して、この外蓋材２０と内蓋材３０とを積層した湯切り機能付の蓋材である。
【００２１】
すなわち、引張り強度などが優れた通常のポリエステル（ＰＥＴ ）１２μｍの表面樹脂フィルム層２と、表面に美麗な印刷をして、裏面にシリコン系剥離ニス（東洋インキ製造（株）製）５ｇ／ｍ２ ・ｄｒｙ の剥離剤層４０を、７個の円形切れ目線ｃ、ｃ、ｃ、…の内側を除いた湯切り孔を形成する領域と、この領域の下流端辺に設けた湯切りつまみａの部分とに、印刷して部分的に設けた、適度の剛性などを有する上質紙７９ｇ／ｍ２ の紙材料層３とを、ウレタン系の接着剤層を介して、通常のドライラミネーション方法で積層して、適度の強度や剛性などを有する連続した巻取りフィルム状の外蓋材２０を作製した。
【００２２】
次に、通常の金属打抜刃を用いた打抜工程で、この外蓋材２０の湯切り孔を形成する領域の上流端に、この領域を区画する直線状の切れ目線ｄを、外蓋材２０を貫通して設けた後に、この外蓋材２０の紙材料層３の裏面に、熱融着性などを有する通常の低密度ポリエチレン（ＬＤＰＥ） ２０μｍの接着性樹脂層４と、各種バリアー性などが優れた通常の１２μｍのアルミニウム箔層５と、熱融着性とイージーピール性とを有するエチレンーメタアクリル酸共重合体（ＥＭＡＡ）（商品名：ＶＮ５０３Ｃ、三井デュポン（株）製）３０μｍのシーラント層６とを、この接着性樹脂層４とシーラント層６とをそれぞれ熱溶融して、通常の熱押出しラミネーション方法で同時に積層することによって、適度の強度や剛性などを有する外蓋材２０に、紙材料層３の裏面に部分的に設けた剥離剤層４０を介して積層した、各種バリアー性や熱融着性などを有する連続した巻取りフィルム状の内蓋材３０を作製した。
【００２３】
続いて、同様の金属打抜刃を用いた打抜工程で、この内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間に、図示していない内蓋材３０を切断する切れ目線と、また内蓋材３０の湯切り孔を形成する領域の下流部分に、湯切り孔を形成する７個の６ｍｍφの円形切れ目線ｃ、ｃ、ｃ、…とを、内蓋材３０を貫通（シーラント層６側から紙材料層３に達する）して設けて、同時に連続した巻取りフィルム状で機械的に、この図示していない切れ目線を切断しながら、湯切りつまみａの部分に設けた剥離剤層４０を剥離して、外蓋材２０を残して、この湯切りつまみａの部分の内蓋材３０を除去した後に、周辺部を切断して、湯切りする方向の下流側の、湯切り孔を形成する領域の切れ目線ｄの近傍の下流端辺に湯切りつまみａを設けた、開蓋する方向の上流端辺に開蓋つまみｂを有する１８０ｍｍφの円形状の、本実施例の湯切り機能付の蓋材を作製した。
【００２４】
本実施例の、熱湯を注いで調理するインスタント焼そばなどを収容した、収容部の直径と深さとが約１６ｃｍφ×４ｃｍの、図１Ｂに示す発泡スチロール製のトレー状容器５０に被せて、このトレー状容器５０のフランジｇに周辺部を熱融着した湯切り機能付の蓋材においては、湯切り機能付の蓋材の開蓋つまみｂをやゝ強く引張って、外蓋材２０に設けた切れ目線ｄ付近まで開蓋して、熱湯を注いで閉蓋して３分間程度放置した後に、湯切りする方向の切れ目線ｄの近傍の下流端辺に設けた湯切りつまみａを引張って、図３Ａに斜線で示す湯切り孔を形成する領域に設けた剥離剤層４０を剥離しながら、この領域を区画する切れ目線ｄを切断して、内蓋材３０を残して、湯切り孔を形成する領域の外蓋材２０を、湯切り機能付の蓋材を閉蓋した状態で除去するだけで、図３Ｂに示すように、剥離剤層４０を除いた７個の円形切れ目線ｃ、ｃ、ｃ、…の内側が、この外蓋材２０とともに除去されて開孔して、この領域に残した内蓋材３０に、簡単に７個の湯切り孔ｃ、ｃ、ｃ、…を形成することができる、続いて、この７個の湯切り孔ｃ、ｃ、ｃ、…を形成したトレー状容器５０を、閉蓋した状態で湯切りする方向の下流側に傾けるだけで、安全に残余の熱湯を湯切りすることができる湯切り機能付の蓋材を得ることができた。
【００２５】
しかも、本実施例の湯切り機能付の蓋材においては、内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間に、図示していない内蓋材３０を切断する切れ目線を設けて、この図示していない切れ目線を切断しながら、湯切りつまみａの部分に設けた剥離剤層４０を剥離して、外蓋材２０を残して、この湯切りつまみａの部分の内蓋材３０を除去したことによって、湯切りする方向の切れ目線ｄの近傍の下流端辺に設けた湯切りつまみａの、内蓋材３０を除去した外蓋材２０のみを引張って、この湯切りつまみａの部分に連続した、図３Ａに斜線で示す湯切り孔を形成する領域に設けた剥離剤層４０を確実に剥離することができるために、図５Ａに示すように、内蓋材３０の湯切り孔を形成する領域と湯切りつまみａの部分との間が、トレー状容器５０のフランジｇの外周端の内側にずれて熱融着された場合であっても、発泡スチロール製のトレー状容器５０のフランジｇの上面側が、図５Ｂに示す材料破壊を起す恐れが全くない、この領域に残した内蓋材３０に、確実に７個の湯切り孔ｃ、ｃ、ｃ、…を形成することができる湯切り機能付の蓋材を得ることができた。
【００２６】
【発明の効果】
以上、実施例ほかに示すとおり、本発明の湯切り機能付の蓋材においては、熱湯を注いで調理するインスタント焼そばやインスタント生麺などを収容した、発泡スチロール製などのトレー状容器５０に被せて熱融着する、湯切り孔を形成する領域に設けた剥離剤層４０を確実に剥離して、この領域に残した内蓋材３０に、確実に複数の湯切り孔ｃ、ｃ、ｃ、…を形成することができる、傾けるだけで、簡単に残余の熱湯を湯切りすることができる湯切り機能付の蓋材を提供することができる。
【図面の簡単な説明】
【図１】（Ａ）は、本発明の実施例１における湯切り機能付蓋材の平面図、（Ｂ）、（Ｃ）は、その断面説明図である。
【図２】（Ａ）、（Ｂ）は、本発明の実施例１における湯切り機能付蓋材の部分拡大断面図である。
【図３】（Ａ）は、本発明の実施例１における複数の湯切り孔ｃ、ｃ、ｃ、…を形成した湯切り機能付蓋材の平面図、（Ｂ）、（Ｃ）は、その断面図である。
【図４】（Ａ）、（Ｃ）は、従来の湯切り機能付蓋材の平面図、（Ｂ）、（Ｄ）は、その断面図である。
【図５】（Ａ）、（Ｂ）は、従来の湯切り機能付の蓋材におけるトレー状容器のフランジｇの上面側が材料破壊を起す状態を示す断面図である。
【符号の説明】
２０…外蓋材
３０…内蓋材
４０…剥離剤層
５０…トレー状容器
２…表面樹脂フィルム層
３…紙材料層
４…接着性樹脂層
５…アルミニウム箔層
６…シーラント層
ａ…湯切りつまみ
ｂ…開蓋つまみ
ｃ…円形切れ目線、湯切り孔
ｄ、ｅ、ｆ…切れ目線
ｇ…フランジ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a plurality of hot-water holes c, c, c,... Which are placed on a tray-shaped container 50 made of styrene foam or the like and accommodated therein such as instant yakisoba or instant noodles to be cooked by pouring in hot water. The present invention relates to a lid member having a water draining function, which is surely formed and can easily drain remaining hot water simply by tilting.
[0002]
[Prior art]
Conventionally, it is possible to drain the remaining hot water simply by tilting it, such as for instant yakisoba, which is cooked by pouring hot water. It is made of a paper laminate material having appropriate strength and rigidity as shown in FIG. A direction in which a lid material 20 and an inner lid material 30 made of a resin laminate material having various barrier properties, heat-fusing properties, and the like are laminated via a partially provided release agent layer 40 in a direction of hot water draining ( In FIG. 4, a draining knob a is provided at a downstream end of a region where a draining hole (shown by oblique lines in FIG. 4C) is formed on the downstream side (right to left in FIG. 4C), and the opening direction (right to left in FIG. 4). A circular or rounded rectangular lid with a hot water draining function having an opening knob b on the upstream end side of the outer lid 20, the upstream end of the area where the hot drain hole is formed, And a region for forming the drain hole of the inner lid member 30 and the drain line. A cut line f for cutting the inner lid member 30 is provided between the knob a and a plurality of circular cuts for forming a drain hole in a downstream portion of a region of the inner lid member 30 where the drain hole is formed. .. Are provided, and a plurality of circular cut lines c, c, c,. There is a lid member having a hot water draining function in which the outer lid member 20 and the inner lid member 30 are laminated (see Japanese Patent Application Laid-Open No. 2000-109141). As shown in FIG. It is widely used as a lid material which covers a tray-shaped container 50 made of, for example, and is made by heat-sealing a peripheral portion to a flange g of the tray-shaped container 50.
[0003]
With respect to the lid member having the hot water draining function shown in FIG. 4 which is covered with the conventional tray-shaped container 50 made of styrofoam or the like and heat-sealed, the lid knob b of the lid material having the hot water draining function is pulled strongly. Then, after opening the lid close to the cut line d provided in the outer lid member 20, pouring hot water and cooking (closing the lid and leaving it for about 3 minutes), the hot water drain provided on the downstream end in the direction of hot water draining The knob a is pulled to cut a cut line f provided between the region of the inner lid member 30 where the drain hole is to be formed and the portion of the drain knob a to form a drain hole indicated by oblique lines in FIG. 4C. While peeling off the release agent layer 40 provided in the region to be cut, the cut line d that divides this region is cut, and the outer cover material 20 in the region where the hot water hole is formed is removed, leaving the inner cover material 30. 4D, a plurality of circular cut lines c, c, c,... Excluding the release agent layer 40 are formed. The inside is removed together with the outer lid member 20 to form a hole, and a plurality of drain holes c, c, c,... Can be easily formed in the inner lid member 30 left in this region. And a plurality of drain holes c, c, c,... Formed in the inner lid member 30 left in a region where a drain hole is formed on the downstream side in the direction of draining. This is a lid member with a draining function that can easily drain remaining hot water simply by inclining the container 50 in the downstream direction in the direction of draining.
[0004]
[Patent Document 1]
JP 2000-109141 A
[Problems to be solved by the invention]
However, the lid member having the hot water draining function shown in FIG. 4 which is covered with a conventional styrofoam tray-like container 50 made of styrene foam and heat-sealed is provided at the downstream end in the direction of hot water draining. The cutting line f provided between the region of the inner lid member 30 where the draining hole is formed and the portion of the draining knob a is cut by pulling the draining knob a, which is also shown in FIG. 4C. When the release agent layer 40 provided in the region where the hot water hole is formed is peeled off, usually, the cut line f provided in the inner lid member 30 and the outer peripheral end of the flange g of the tray-like container 50 are shown in FIG. 4B. As shown in FIG. 5A, due to variations in the process of covering and heat-sealing, the region where the hot water hole is formed in The cut line f provided between the cutting knob a and the tray knob 50 If the flange g is displaced to the inside of the outer peripheral end and heat-sealed, pulling the hot water knob a causes the upper surface side of the flange g of the tray-shaped container 50 made of styrene foam or the like to cause the material destruction shown in FIG. 5B. This is a problem that the release line 40 provided in the inner lid member 30 may not be cut, and it is difficult to peel off the release agent layer 40 provided in the region where the hot water hole is formed. There is a possibility that the drainage hole may not be formed at all in the region where the drainage hole is formed on the downstream side in the direction in which the drainage is performed because the inner lid member 30 in the region is removed together with the outer lid member 20.
[0006]
Therefore, an object of the present invention is to provide an area in which a hot water hole is formed by covering a tray-like container 50 made of styrene foam or the like containing hot fried noodles or instant noodles to be cooked by pouring in hot water and hot-sealing. The release agent layer 40 can be reliably peeled off, and a plurality of hot water holes c, c, c,... Can be reliably formed in the inner lid member 30 left in this region. An object of the present invention is to provide a lid member having a hot water draining function capable of draining remaining hot water.
[0007]
[Means for Solving the Problems]
As shown in FIGS. 1 and 3, the lid member having a hot water draining function of the present invention is formed by laminating an outer lid member 20 and an inner lid member 30 with a partially provided release agent layer 40 interposed therebetween. A draining knob a is provided at a downstream end of a region where a draining hole (shown by oblique lines in FIG. 3A) is formed on the downstream side in the direction of draining (from right to left in FIGS. 1 and 3), and the lid is opened. A circular or rectangular (round in FIGS. 1 and 3) round-shaped lid material having a lid opening knob b at the upstream end in the direction (from right to left in FIGS. 1 and 3) with a hot water draining function. A plurality (seven in FIG. 1 and FIG. 3) of circular cut lines c, c, c,. And a region for forming a drain hole excluding the inside of the plurality of circular cut lines c, c, c,... And a portion of a drain terminal knob a provided at the downstream end of this region. Through the partial release agent layer 40 provided is a lid equipped with hot water cutting function, characterized in that a laminate of an inner cover member 30 and the outer cover material 20.
[0008]
In the lid member having the hot water draining function of the present invention, the outer lid member 20 is placed on a tray-like container 50 made of styrene foam or the like, containing an instant yakisoba or an instant raw noodle to be poured and cooked with hot water, and heat-sealed. And the inner lid member 30 are laminated via a partly provided release agent layer 40. A draining knob a is provided at a downstream end of a region where a draining hole is formed on the downstream side in the direction of draining. And a lid having a hot water draining function similar to the conventional lid member having a hot water draining function shown in FIG. 4 having a circular shape or a rectangular shape with rounded corners having an opening knob b on the upstream end side in the opening direction. A plurality of circular cut lines c, c, c,... Forming a hot water hole are provided at a downstream portion of a region of the inner lid material 30 where the hot water hole is formed, and the plurality of circular cut lines are formed. An area where a hot water hole is formed excluding the inside of c, c, c,. The outer cover member 20 and the inner cover member 30 are laminated on the part of the hot water removal knob a provided on the end side via the partially provided release agent layer 40, so that a lid having a hot water removal function is provided. The hot water provided on the downstream end of the region where the hot water hole is formed in the downstream side in the direction of hot water draining after the lid opening knob b of the material is slightly pulled strongly, the hot water is poured, and the hot water is poured and cooked. The release knob a is pulled while peeling the release agent layer 40 provided in the portion of the hot water release knob a, and the release agent layer 40 provided in a region for forming the hot water hole shown by oblique lines in FIG. 3A is peeled off. By simply removing the outer lid material 20 in the region where the hot water drain hole is to be formed while leaving the inner lid material 30, as shown in FIG. 3B, a plurality of circular cut lines c, c, c excluding the release agent layer 40 are formed. ,... Are removed together with the outer lid member 20 and opened to form an inner lid member 30 left in this region. It is possible to easily form a plurality of drain holes c, c, c,..., And a lid member having a draining function similar to the conventional one, and subsequently, a drain hole on the downstream side in the draining direction. Are simply formed by simply tilting the tray-shaped container 50 having a plurality of hot water holes c, c, c,... It is possible to provide a lid member having a function of draining the remaining hot water.
[0009]
Moreover, in the lid member with the hot water draining function of the present invention, unlike the conventional lid member with the hot water draining function shown in FIG. 4, the inside of a plurality of circular cut lines c, c, c,. In addition to the region in which the drain hole is formed, the outer lid member 20 and the inner lid member 40 are provided via a release agent layer 40 that is partially provided in a portion of the drain terminal a provided continuously on the downstream end of this region. By laminating the lid member 30, the hot-watering knob a provided on the downstream end side of the area where the hot-water hole is formed on the downstream side in the direction of hot-watering is separated from the hot-watering knob a. While peeling the agent layer 40, leaving only the inner lid member 30 and pulling only the outer lid member 20 of the peeled drainer knob a, the hot water indicated by oblique lines in FIG. Since the release agent layer 40 in the region where the cut hole is formed can be reliably released, the release agent layer 40 is shown in FIG. 5A. As described above, the case where the region between the region where the drain hole of the inner lid member 30 is formed and the portion of the drain knob a is shifted to the inside of the outer peripheral end of the flange g of the tray-shaped container 50 and heat-sealed. Also, by pulling only the outer lid member 20 of the hot water draining knob a, the upper lid side of the flange g of the tray-shaped container 50 made of styrene foam or the like has no risk of causing the material destruction shown in FIG. 5B. By simply removing the outer lid member 20 in the region where the drain hole is to be formed, a plurality of drain holes c, c, c,... Can be reliably formed in the inner lid member 30 left in this region. A lid member with a hot water draining function can be provided.
[0010]
In addition, as shown in FIG. 1C, the lid member with the hot water draining function of the present invention cuts the region between the hot water hole and the region of the inner lid material 30 where the hot water hole is formed, and This is a lid member with a draining function, wherein the inner lid member 30 at the portion of the draining knob a is removed while leaving the lid member 20.
[0011]
In the lid member having the draining function of the present invention, the region between the drain hole of the inner lid member 30 and the portion of the draining knob a is cut, and the outer lid member 20 is left. By removing the inner lid member 30 in the portion of the knob a, the inner lid member 30 of the drainer knob a provided on the downstream end side of the region for forming the drain hole on the downstream side in the direction of draining is removed. By pulling only the outer cover material 20, the release agent layer 40 in the region where the hot water hole shown by oblique lines in FIG. 3A is formed, which is continuous with the hot water knob a, can be reliably peeled off. Similarly to the above-described lid member having a draining function, the space between the region where the drain hole of the inner lid member 30 is formed and the portion of the drain knob a is located inside the outer peripheral end of the flange g of the tray-shaped container 50. Pull only the outer lid material 20 of the hot-watering knob a, even if it is heat-sealed out of alignment. Therefore, it is possible to the upper surface of the flange g of the tray-like container 50, such as foamed polystyrene is to obtain a lid for fear devoid with water cutting function to cause material failure.
[0012]
In addition, as shown in FIGS. 1 and 3, the lid material with the hot water draining function of the present invention has a cut line d that defines this area at the upstream end of the area where the hot water drain hole of the outer lid material 20 is formed. A lid member with a hot water draining function provided.
[0013]
In the lid member with the draining function of the present invention, a cut line d for dividing the region is provided at the upstream end of the region where the drain hole of the outer lid member 20 is formed. The cover opening knob b of the material is pulled slightly strongly, and the cover is opened to the vicinity of the cut line d provided on the outer cover material 20, and then the hot water is poured, the cover is closed and left for about 3 minutes. On the downstream side, a hot-watering knob a provided on the downstream end side of a region where a hot-water hole is formed is pulled while peeling off the release agent layer 40 provided at the portion of the hot-watering knob a, and is hatched in FIG. 3A. While peeling off the release agent layer 40 provided in the area where the hot water hole is to be formed, the cut line d that divides this area is cut to leave the inner lid member 30 outside the area where the hot water hole is to be formed. Since the lid member 20 can be removed in a state where the lid member with the hot water draining function is closed, The tray-like container 50 having a plurality of drain holes c, c, c,... Formed in the inner lid member 30 left in the region is tilted downstream in the direction of draining with the lid closed, so that the remaining lid can be safely removed. Can be obtained.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
The lid member with the hot water draining function of the present invention will be described in detail below along the embodiments. The outer lid member 20 constituting the lid member with the hot water draining function of the present invention will be described with reference to FIGS. As shown in B), for example, a surface resin film layer 2 of about 6 to 30 μm having excellent tensile strength, such as polyester (PET) or oriented polypropylene (O-PP), and a high quality paper having a beautiful printed surface. And a paper material layer 3 of about 60 to 130 g / m 2 having appropriate rigidity, such as paper and art paper, are appropriately laminated via an adhesive layer (not shown), and have appropriate strength and rigidity. Can be used without any particular limitation.
[0015]
As shown in FIGS. 2A and 2B, the inner lid member 30 includes an adhesive resin layer 4 of about 12 to 30 μm having a heat-fusing property, such as low-density polyethylene (LDPE). An aluminum foil layer 5 of about 6 to 18 μm having excellent barrier properties and the like, and heat-fusing properties and easy peeling of, for example, ethylene-methacrylic acid copolymer (EMAA) and ethylene-vinyl acetate copolymer (EVA). A sealant layer 6 of about 20 to 60 μm having a property of being able to be peeled off after being thermally fused and appropriately laminated by, for example, hot-melting the adhesive resin layer 4 and the sealant layer 6, respectively; The inner lid member 30 having various barrier properties, heat fusion properties, and the like can be used without particular limitation.
[0016]
As shown in FIGS. 2 (A) and 2 (B), the release agent layer 40 has, for example, a normal wax-based release varnish or a silicon-based release varnish on the back surface of the paper material layer 3 having a beautifully printed surface. 3A, the peel strength of the release agent layer 40 having a width of about 10 to 150 g / 15 mm is formed by forming a plurality of circular cut lines c, c, and c in a region where a hot water hole shown by hatching in FIG. 3A is formed. .. and the hot water drop knob a provided at the downstream end of this area.
[0017]
Further, in the lid member with the hot water draining function of the present invention, the outer lid member 20 in which the above-mentioned surface resin film layer 2 and paper material layer 3 are laminated, the above-mentioned adhesive resin layer 4, aluminum foil layer 5, and sealant layer 6 is laminated with the inner lid material 30 laminated through the partially provided release agent layer 40, as described in Examples described later, the surface resin film layer 2 having excellent tensile strength and the like. And a paper material layer 3 having a moderate rigidity and the like in which a release agent layer 40 is partially provided on the back surface, and laminated by an ordinary dry lamination method or the like via an adhesive layer (not shown), After penetrating the cut line d that divides the region where the hot water hole is to be formed, the adhesive resin layer 4 having heat-sealing property and various barrier properties are formed on the back surface of the paper material layer 3. Excellent aluminum foil layer 5 and heat sealability And a sealant layer 6 having a easy peel properties, and the adhesive resin layer 4 and the sealant layer 6 by each hot melt, can be laminated simultaneously with such conventional thermal extrusion lamination method.
[0018]
In addition, in the lid member with the draining function of the present invention, a portion between the region where the drain hole of the inner lid member 30 is formed and the portion of the drainer knob a is cut, and the outer lid member 20 is left. As for the method of removing the inner lid member 30 at the portion of the cutting knob a, the inner lid member 30 (not shown) is placed between the region of the inner lid member 30 where the hot water hole is formed and the portion of the hot water knob a. An area where a cut line is provided to form a hot water hole except the inside of a plurality of circular cut lines c, c, c,..., And a part of a hot water knob a provided at a downstream end of this area. Then, by laminating the outer lid member 20 and the inner lid member 30 via a partially provided release agent layer 40, as shown in an example to be described later, mechanically in a continuous wound film shape The release agent layer 40 provided at the portion of the hot water removal knob a while cutting the cut line (not shown) After removing the inner lid member 30 at the part of the draining knob a, leaving the outer lid member 20 peeled off, at the downstream end side of the region where the drain hole is formed on the downstream side in the direction of draining It can be cut into a circular shape or a rectangular shape with rounded corners provided with a hot-watering knob a and an opening knob b at the upstream end in the opening direction.
[0019]
【Example】
Hereinafter, specific examples of the lid member with a hot water draining function of the present invention will be described.
<Example 1>
FIG. 1A is a plan view of a lid member having a hot water draining function in Embodiment 1 of the present invention, and FIGS. 1B and 1C are cross-sectional explanatory views thereof.
FIGS. 2A and 2B are enlarged cross-sectional explanatory views of a lid member having a hot water draining function in the first embodiment of the present invention.
Further, FIG. 3A is a plan view of a lid member having a draining function in which a plurality of draining holes c, c, c,... Are formed in Example 1 of the present invention, and FIGS. FIG.
[0020]
A cover member having a hot water draining function according to the first embodiment of the present invention corresponds to an outer cover member 20 in which a surface resin film layer 2 and a paper material layer 3 are laminated, and an adhesive resin layer. 4, an aluminum foil layer 5, and an inner lid material 30 on which a sealant layer 6 is laminated, with a release agent layer 40 provided partially between the inner lid material 30 and a laminating direction (in FIG. 1 and FIG. 3, In the opening direction (see FIG. 3A), a draining knob a is provided at a downstream end (in the vicinity of the cut line d) of a region where a draining hole is formed (shown by oblique lines in FIG. 3A). 1, a right-to-left upstream end side having a lid knob b at the upstream end side of FIG. 1A. At the upstream end of the region to be formed, a linear cut line d that defines this region is provided, and a region where the hot water hole of the inner lid member 30 is formed is formed. A notch line for cutting the inner lid member 30 (not shown) is provided between the inner lid member 30 and the portion of the inner lid member 30, and a drain hole is provided in a downstream portion of a region where the drain hole of the inner lid member 30 is formed. , Forming a 6 mmφ circular cut line c, c, c,... To form a hot water hole except for the inside of the 7 circular cut lines c, c, c,. The outer lid member 20 and the inner lid member 30 are laminated with a part of a drainer knob a provided on the downstream end side of this area via a release agent layer 40 provided partially, and a function of having a drainer function is provided. It is a lid material.
[0021]
That is, a normal resin (PET) 12 μm surface resin film layer 2 having excellent tensile strength and the like, a beautifully printed surface, and a silicone-based release varnish (manufactured by Toyo Ink Manufacturing Co., Ltd.) 5 g / m 2 on the back surface. The 2 · dry release agent layer 40 is formed by forming a drain hole excluding the inside of the seven circular cut lines c, c, c,..., And a drain knob a provided at the downstream end of this area. And a paper material layer 3 of 79 g / m 2 of high-quality paper having appropriate rigidity and the like, which is partially provided by printing, with a normal dry lamination method via a urethane-based adhesive layer. By laminating, a continuous wound film-shaped outer lid member 20 having appropriate strength and rigidity was produced.
[0022]
Next, in a punching step using a normal metal punching blade, a linear cut line d for defining this region is formed at the upstream end of the region of the outer lid member 20 where the hot water hole is formed. After the material 20 is penetrated, a normal low-density polyethylene (LDPE) 20 μm adhesive resin layer 4 having heat-fusing properties and the like, 12 μm aluminum foil layer 5 having excellent heat resistance, etc., and ethylene-methacrylic acid copolymer (EMAA) having heat sealability and easy peelability (trade name: VN503C, manufactured by DuPont Mitsui) A 30 μm sealant layer 6 is formed by simultaneously fusing the adhesive resin layer 4 and the sealant layer 6 with each other and simultaneously laminating them by a normal hot extrusion lamination method, so that an outer lid material having appropriate strength and rigidity is obtained. 20 on paper A continuous wound film-shaped inner lid member 30 having various barrier properties, heat-fusing properties, and the like, which was laminated via a release agent layer 40 partially provided on the back surface of the material layer 3, was produced.
[0023]
Subsequently, in a punching step using a similar metal punching blade, the inner lid member 30 (not shown) is placed between the region of the inner lid member 30 where the drain hole is to be formed and the portion of the drain knob a. , And seven 6 mmφ circular cut lines c, c, c,... Forming the drain hole in the inner lid member 30 at the downstream portion of the region where the drain hole is formed. The cover material 30 is provided so as to penetrate (from the sealant layer 6 side to the paper material layer 3), and at the same time mechanically cuts the cut line (not shown) in the form of a continuous rolled film. After removing the release agent layer 40 provided on the portion a, leaving the outer lid member 20 and removing the inner lid member 30 on the portion a, the peripheral portion is cut and drained. On the downstream end near the cut line d in the area where the hot water hole is formed on the downstream side in the direction Provided with a circular of 180mmφ with lid opening knob b in the direction of the upstream end side to open lid, to prepare the cover material with the hot water cutting function of the present embodiment.
[0024]
This tray was placed on a styrofoam tray-shaped container 50 shown in FIG. 1B having an accommodation part diameter and depth of about 16 cmφ × 4 cm, which accommodated instant yakisoba, etc., which was cooked by pouring in hot water. In the lid member having a hot-draining function in which the peripheral portion is heat-sealed to the flange g of the container 50, the cover-opening knob b of the lid member having the hot-draining function was slightly pulled strongly and provided on the outer lid member 20. After opening the lid to the vicinity of the cut line d, pouring in hot water, closing the lid, and leaving it to stand for about 3 minutes, pull the hot water cutting knob a provided at the downstream end near the cut line d in the direction of hot water removal, While separating the release agent layer 40 provided in the region where the hot water hole shown by oblique lines in FIG. 3A is formed, the cut line d that divides this region is cut, and the hot water hole is removed while leaving the inner lid member 30. Close the outer lid material 20 in the region to be formed with a lid material having a hot water draining function. 3B, the inside of the seven circular cut lines c, c, c,... Excluding the release agent layer 40 is removed together with the outer lid member 20 to form a hole, as shown in FIG. 3B. .. Can be easily formed in the inner lid member 30 left in this region. Subsequently, the seven drain holes c, c, c,. By simply tilting the tray-shaped container 50 formed with c,... in the direction of hot water removal with the lid closed, a lid material with a hot water draining function that can safely drain the remaining hot water is obtained. I was able to.
[0025]
Moreover, in the lid member having the draining function of the present embodiment, the inner lid member 30 (not shown) is cut between the region where the drain hole of the inner lid member 30 is formed and the portion of the draining knob a. While removing the cut line (not shown), the release agent layer 40 provided at the portion of the hot water removal knob a is peeled off, and the hot water removal knob a Is removed, only the outer lid member 20 from which the inner lid member 30 is removed is pulled out of the draining knob a provided at the downstream end near the cut line d in the direction of draining. In order to reliably remove the release agent layer 40 provided in the region where the hot water hole shown by oblique lines in FIG. 3A is formed, which is continuous to the portion of the hot water knob a, as shown in FIG. Between the region of the inner lid member 30 where the drain hole is formed and the portion of the drain knob a. However, even if it is shifted to the inside of the outer peripheral end of the flange g of the tray-shaped container 50 and heat-sealed, the upper surface side of the flange g of the tray-shaped container 50 made of styrene foam causes the material destruction shown in FIG. 5B. With no fear, a lid material having a draining function capable of reliably forming seven drain holes c, c, c,... In the inner lid material 30 left in this region was obtained. .
[0026]
【The invention's effect】
As described above, as shown in the examples and the like, in the lid member having the hot water draining function of the present invention, the tray material is placed on a tray-shaped container 50 made of polystyrene foam or the like, containing instant yakisoba or instant noodles to be cooked by pouring hot water. The release agent layer 40 provided in a region where a hot water hole to be heat-fused is formed is reliably peeled off, and a plurality of hot water holes c, c, c, c Can be provided, and a lid member with a draining function that can easily drain remaining hot water simply by tilting can be provided.
[Brief description of the drawings]
FIG. 1A is a plan view of a lid member with a hot water draining function according to a first embodiment of the present invention, and FIGS. 1B and 1C are cross-sectional explanatory views thereof.
FIGS. 2A and 2B are partial enlarged cross-sectional views of a lid member with a hot water draining function in Embodiment 1 of the present invention.
FIG. 3 (A) is a plan view of a lid member with a draining function formed with a plurality of draining holes c, c, c,... According to the first embodiment of the present invention. It is sectional drawing.
4 (A) and 4 (C) are plan views of a conventional lid member with a hot water draining function, and FIGS. 4 (B) and 4 (D) are cross-sectional views thereof.
FIGS. 5A and 5B are cross-sectional views showing a state in which the upper surface of a flange g of a tray-shaped container in a conventional lid member having a hot water draining function causes material breakage.
[Explanation of symbols]
Reference Signs List 20 outer cover member 30 inner cover member 40 release agent layer 50 tray-shaped container 2 surface resin film layer 3 paper material layer 4 adhesive resin layer 5 aluminum foil layer 6 sealant layer a Knob b: Opening knob c: Circular cut line, hot water hole d, e, f: Cut line g: Flange
