JP3584715B2

JP3584715B2 - Packaging bag with opening maintenance sheet

Info

Publication number: JP3584715B2
Application number: JP00757598A
Authority: JP
Inventors: 正信東; 潔和田
Original assignee: Toppan Inc
Current assignee: Toppan Inc
Priority date: 1998-01-19
Filing date: 1998-01-19
Publication date: 2004-11-04
Anticipated expiration: 2018-01-19
Also published as: JPH11198948A

Description

【０００１】
【発明の属する技術分野】
本発明は、液体洗剤、トイレタリー、果汁飲料及び調味料などの詰替え用包装袋に関するもので、詳しくは、内容物を注出し易い開口維持シート付包装袋に関するものである。
【０００２】
【従来の技術】
近年、環境保全や省資源の立場から、各種の液体内容物に詰替え用容器が広く使用されるようになってきた。この詰替え用容器としては、使用時に注出口部を切断して注出孔を開口して使用する合成樹脂フィルムからなる柔軟な注出口部付包装袋があるが、詰め替え時の内容物の注出のし易さを改善するために、例えば、特開平８−２５３８号公報に記載されいる注出口部の注出孔を中空円筒状又は中空半円筒状に成形したものや、特開平９−２４９５６号公報に記載されている注出口部の注出孔に半硬質ないし硬質パイプを埋没したものなどが知られていた。
【０００３】
【発明が解決しようとする課題】
しかしながら、上述した従来の注出口部付包装袋は、内容物を充填する前には、包装袋本体は平坦であるが注出口部が立体構造になっているため、流通及び保管時の集積効率が悪く、また、内容物充填時に、充填機内での包装袋の搬送上のトラブルが発生し易く、このため、特殊な搬送装置などを必要とすることがあった。
【０００４】
本発明は、上述の従来の注出口部付包装袋の問題を解決したものであり、注出口部が平坦で流通及び保管時の集積効率が良く、内容物充填機上での包装袋の搬送上のトラブルがなく、使用時には、注出口部の注出孔をワンタッチで注出し易い立体構造にできる開口維持シート付包装袋を提供するものである。
【０００５】
【課題を解決するための手段】
すなわち、本発明の第１の発明は、図１（ａ）及び（ｂ）に示すように、使用時に先端を切断して注出孔（１１２）を開口する注出口部（１１０）をもち、表裏の合成樹脂フィルムの周縁部をシールしてなる柔軟な包装袋（１００）において、前記注出口部の注出孔に、注出方向の折り目線（２０１）を注出方向に対し直角方向のほぼ中央位置に形成した四角形状の開口維持シート（２００）を、前記折り目線の左側又は右側のどちらか一方の下面を前記表裏の合成樹脂フィルムのどちらか一方の内面に接着して挿着し、且つ、前記開口維持シートと対応する側の合成樹脂フィルムの内面に、係止シート（３００）を接着して突設したことを特徴とする開口維持シート付包装袋（１０）である。
【０００６】
次に、本発明の第２の発明は、図２（ａ）及び（ｂ）に示すように、使用時に先端を切断して注出孔（１１２）を開口する注出口部（１１０）をもち、表裏の合成樹脂フィルムの周縁部をシールしてなる柔軟な包装袋（１００）において、前記注出口部の注出孔に、注出方向の折り目線（２０１）を注出方向に対し直角方向のほぼ中央位置に形成した四角形状の開口維持シート（２００）を、前記折り目線の左側又は右側のどちらか一方の下面を前記表裏の合成樹脂フィルムのどちらか一方の内面に接着して挿着し、且つ、前記開口維持シートと対応する側の合成樹脂フィルムの内面に、係止溝又は係止突起（１１３）を形成したことを特徴とする開口維持シート付包装袋（１０）である。
【０００７】
次に、本発明の第３の発明は、図３（ａ）及び（ｂ）に示すように、使用時に先端を切断して注出孔（１１２）を開口する注出口部（１１０）をもち、表裏の合成樹脂フィルムの周縁部をシールしてなる柔軟な包装袋（１００）において、注出方向の折り目線（２０１ａ）を注出方向に対し直角方向のほぼ中央位置に形成し、この折り目線の左側又は右側のどちらか一方の上面に一個以上の係止突起（２１０）を注出方向に並列して形成し、他方側の注出方向に対し直角方向のほぼ中央位置に注出方向の折り目線（２０１ｂ）を形成する四角形状の開口維持シート（２００）を、前記前者の折り目線（２０１ａ）を内側に折り曲げて、この折り目線と前記後者の折り目線（２０１ｂ）との間の下面を前記表裏の合成樹脂フィルムのどちらか一方の内面に接着して前記注出口部の注出孔に挿着したことを特徴とする開口維持シート付包装袋（１０）である。
【０００８】
次に、本発明の第４の発明は、図４（ａ）及び（ｂ）に示すように、使用時に先端を切断して注出孔（１１２）を開口する注出口部（１１０）をもち、表裏の合成樹脂フィルムの周縁部をシールしてなる柔軟な包装袋（１００）において、注出方向の折り目線（２０１）を注出方向に対し直角方向のほぼ中央位置に形成し、且つ、注出方向の切れ目（２０２ｃ）と注出方向に直角方向の２本の切れ目（２０２ａ，２０２ｂ）とからなる上方へ反る屈曲板（２２０）を、注出方向に対し直角方向のほぼ中央位置から片側の端縁部にわたって形成する四角形状の開口維持シート（２００）を、前記屈曲板を形成しない側の上面を前記表裏の合成樹脂フィルムのどちらか一方の内面に接着して前記注出口部の注出孔に挿着したことを特徴とする開口維持シート付包装袋（１０）である。
【０００９】
次に、本発明の第５の発明は、図５（ａ）及び（ｂ）に示すように、使用時に先端を切断して注出孔（１１２）を開口する注出口部（１１０）をもち、表裏の合成樹脂フィルムの周縁部をシールしてなる柔軟な包装袋（１００）において、ほぼ中央部に注出方向の切れ目（２０２）を２本平行させて形成し、前記２本の切れ目の上端及び下端からそれぞれ端縁部にわたる注出方向に対して直角方向の４本の切れ目を形成して左右対応する係止板（２３０ａ，２３０ｂ）を形成し、前記係止板のそれぞれに三角波状の注出方向の係止条部（２３１ａ，２３１ｂ）を１本以上並列させて形成し、且つ、前記注出方向に対して直角方向の４本の切れ目の両端から端部にわたる８本の注出方向の折り目線（２０１）を形成する四角形状の開口維持シート（２００）を、注出方向に対して直角方向のほぼ中央に前記４本の折り目線と２本の切れ目とから形成する貼着板（２４０）の下面を前記表裏の合成樹脂フィルムのどちらか一方の内面に接着して前記注出口部の注出孔に挿着したことを特徴とする開口維持シート付包装袋（１０）である。
【００１１】
そして、本発明の第６の発明は、図６（ａ）及び（ｂ）に示すように、使用時に先端を切断して注出孔（１１２）を開口する注出口部（１１０）をもち、表裏の合成樹脂フィルムの周縁部をシールしてなる柔軟な包装袋（１００）において、ほぼ中央位置に、注出方向に対し直角方向に平行な２本の切れ目（２０２ａ，２０２ｂ）とこの平行な２本の切れ目の一方側の端部間を結ぶ注出方向の切れ目（２０２ｃ）を形成して支柱板（２６０）を設け、この支柱板の平行な２本の切れ目の他方側の端部からそれぞれ上端及び下端にわたる折り目線（２０１ａ及び２０１ｂ）を形成する四角形状の開口維持シート（２００）を、前記支柱板を形成した側の支柱板を除く上面を前記表裏の合成樹脂フィルムのどちらか一方の内面に接着して前記注出口部の注出孔に挿着したことを特徴とする開口維持シート付包装袋（１０）である。
【００１２】
【作用】
本発明の開口維持シート付包装袋は、内容物が充填されるまでは、注出口部も包装袋本体も平坦であるため、流通及び保管時の集積効率が良く、内容物充填機上での包装袋の搬送上のトラブルがなく、搬送のための特殊な装置を必要としない。
【００１３】
また、本発明の開口維持シート付包装袋は、剛性をもつ合成樹脂シートからなり折り目線を設けて折り曲げ可能にした開口維持シートを注出口部の注出孔に挿着しているため、使用時に注出口部の先端を切断して容器を開封し、注出孔に挿着されている開口維持シートを、設けられている折り目線により折り曲げて、平坦な状態から容易に立体構造に変えることができ、この立体構造の開口維持シートが、外側の柔軟な合成樹脂フィルムで形成される注出孔を開口状態に維持するため、他の容器へ内容物を移し替えるときに、内容物を注出し易い。
【００１４】
【発明の実施の形態】
本発明の開口維持シート付包装袋（１０）は、例えば、図１（ａ）に示すように、使用時に先端を切断して注出孔（１１２）を開口する注出口部（１１０）をもち、表裏の合成樹脂フィルムの周縁部をシールしてなる柔軟な包装袋（１００）の注出口部の注出孔（１１２）に、折り曲げ可能で平坦で適度の剛性をもつ開口維持シート（２００）を挿着し、内容物の注出時に、図１（ｃ）に示すように、開口維持シート（２００）を折り曲げて立体構造にするものである。
【００１５】
上述の注出口部付包装袋は、通常では、延伸ポリエステルフィルム層／ポリエチレン層構成、延伸ポリエステルフィルム層／無延伸ポリプロピレンフィルム層構成、ナイロンフィルム層／ポリエチレン層構成、ナイロンフィルム層／無延伸ポリプロピレンフィルム層構成、ナイロンフィルム層／アルミニウム箔層／ポリエチレン層構成、ナイロンフィルム層／アルミニウム箔層／無延伸ポリプロピレンフィルム層構成、延伸ポリエステルフィルム層／延伸ナイロンフィルム層／ポリエチレン層構成、延伸ポリエステルフィルム層／延伸ナイロンフィルム層／無延伸ポリプロピレンフィルム層構成、延伸ポリエステルフィルム層／アルミニウム箔層／ナイロンフィルム層／ポリエチレン層構成、延伸ポリエステルフィルム層／アルミニウム箔層／ナイロンフィルム層／無延伸ポリプロピレンフィルム層構成、ナイロンフィルム層／引裂性延伸ポリプロピレンフィルム層／アルミニウム箔層／ポリエチレン層構成、ナイロンフィルム層／引裂性延伸ポリプロピレンフィルム層／アルミニウム箔層／無延伸ポリプロピレンフィルム層構成、引裂性ナイロンフィルム層／ポリエチレン層構成、引裂性ナイロンフィルム層／無延伸ポリプロピレンフィルム層構成などの積層フィルムを表裏重ね合わせて、その周縁部に、図１（ａ）に示すように、ヒートシール法などの熱融着法によりシール部（１０１）を設けて作製するものである。使用目的によっては、単層フィルムを使用してもよい。なお、注出口部には、通常、開封のためのノッチ（１１１）を形成するものであり、包装袋の形態は、通常周知の自立しない平パウチでも、底部に底部材を設けて自立するスタンディングパウチでもよい。
【００１６】
また、開口維持シートは、ポリエチレン、ポリプロピレンなどの単層シート又はポリエチレン層／ポリスチレン層／ポリエチレン層構成、無延伸ポリプロピレンフィルム層／ポリスチレン層／無延伸ポリプロピレンフィルム層構成、ポリエチレン層／延伸ポリエステルフィルム層／ポリエチレン層構成、無延伸ポリプロピレンフィルム層／延伸ポリエステルフィルム層／無延伸ポリプロピレンフィルム層構成などの積層シート又はポリエチレン・ポリプロピレンブレンド樹脂、ポリエチレン・ポリスチレンブレンド樹脂、ポリプロピレン・ポリスチレンブレンド樹脂などの単層シートを用いて作製し、折り目線は、折り曲げる方向に合わせて罫押しやハーフカットなどにより形成するものである。
【００１７】
本発明の一実施形態の開口維持シート付包装袋（１０）は、例えば、図１（ａ）及び（ｂ）に示すように、注出口部（１１０）の注出孔（１１２）に、注出方向の折り目線（２０１）を注出方向に対し直角方向のほぼ中央位置に形成した四角形状の開口維持シート（２００）を、折り目線の左側の下面を注出口部を形成する裏側の合成樹脂フィルムの内面に熱融着法又は接着剤を用いて接着して挿着し、また、表側の合成樹脂フィルムの内面に、係止シート（３００）を熱融着法又は接着剤を用いて接着して突設するものである。そして、内容物を注出するときに、注出口部の先端を切断して注出孔を開口し、図１（ｃ）に示すように、開口維持シート（２００）の折り目線（２０１）を包装袋（１００）の外側から指で押圧して内側へ折り曲げ、開口維持シートの折り曲げ側の先端を、上方の合成樹脂フィルムの内面の右側に突設する係止シート（３００）に引っかけると、平坦だった開口維持シートがワンタッチで立体構造となり、包装袋の注出口部の注出孔が開口した状態に維持されて内容物の流路（１１４）が確保される。
【００１８】
次に、本発明の他の一実施形態の開口維持シート付包装袋（１０）は、例えば、図２（ａ）及び（ｂ）に示すように、注出口部（１１０）の注出孔（１１２）に、注出方向の折り目線（２０１）を注出方向に対し直角方向のほぼ中央位置に形成した四角形状の開口維持シート（２００）を、折り目線の左側の下面を注出口部を形成する裏側の合成樹脂フィルムの内面に熱融着法又は接着剤を用いて接着して挿着し、また、表側の合成樹脂フィルムの内面に、係止溝（１１３）を形成するものである。そして、内容物を注出するときに、注出口部の先端を切断して注出孔を開口し、図２（ｃ）に示すように、開口維持シート（２００）の折り目線（２０１）を包装袋（１００）の外側から指で押圧して内側へ折り曲げ、開口維持シートの折り曲げ側の先端を、上方の合成樹脂フィルムの内面の右側に形成する係止溝（１１３）に引っかけると、平坦だった開口維持シートがワンタッチで立体構造となり、包装袋の注出口部の注出孔が開口した状態に維持されて内容物の流路（１１４）が確保される。
【００１９】
次に、本発明の他の一実施形態の開口維持シート付包装袋（１０）は、例えば、図３（ａ）及び（ｂ）に示すように、注出方向の折り目線（２０１ａ）を注出方向に対し直角方向のほぼ中央位置に形成し、この折り目線の右側の上面に４個の係止突起（２１０）を注出方向に並列して形成し、左側の注出方向に対し直角方向のほぼ中央位置に注出方向の折り目線（２０１ｂ）を形成する四角形状の開口維持シート（２００）を、折り目線（２０１ａ）を内側に折り曲げて、折り目線（２０１ａ）と折り目線（２０１ｂ）との間の下面を裏側の合成樹脂フィルムの内面に熱融着法又は接着剤を用いて接着して注出口部（１１０）の注出孔（２１２）に挿着するものである。そして、内容物を注出するときに、注出口部の先端を切断して注出孔を開口し、図３（ｃ）に示すように、開口維持シート（２００）の折り目線（２０１ｂ）を包装袋（１００）の外側から指で押圧して内側へ折り曲げ、開口維持シートの折り曲げ側の先端を、上方の合成樹脂フィルムの内面の右側に形成する係止突起（２１０）に引っかけると、平坦だった開口維持シートがワンタッチで立体構造となり、包装袋の注出口部の注出孔が開口した状態に維持されて内容物の流路（１１４）が確保される。
【００２０】
次に、本発明の他の一実施形態の開口維持シート付包装袋（１０）は、例えば、図４（ａ）及び（ｂ）に示すように、注出方向の折り目線（２０１）を注出方向に対し直角方向のほぼ中央位置に形成し、また、注出方向の切れ目（２０２ｃ）と注出方向に直角方向の２本の切れ目（２０２ａ，２０２ｂ）とからなる上方へ反る屈曲板（２２０）を、注出方向に対し直角方向のほぼ中央位置から右側の端縁部にわたって形成する四角形状の開口維持シート（２００）を、折り目線（２０１）の左側の上面を表側の合成樹脂フィルムの内面に熱融着法又は接着剤を用いて接着して、注出口部（１１０）の注出孔（１１２）に挿着するものである。そして、内容物を注出するときに、注出口部の先端を切断して注出孔を開口し、図４（ｃ）に示すように、開口維持シート（２００）の折り目線（２０１ｂ）を包装袋（１００）の外側から指で押圧して内側へ折り曲げると、開口維持シートの折り曲げ側の先端と屈曲板の先端とが注出孔を形成する合成樹脂フィルム内面に当接し、平坦だった開口維持シートがワンタッチで立体構造となり、包装袋の注出口部の注出孔が開口した状態に維持されて内容物の流路（１１４）が確保される。
【００２１】
次に、本発明の他の一実施形態の開口維持シート付包装袋（１０）は、例えば、図５（ａ）及び（ｂ）に示すように、ほぼ中央部に注出方向の切れ目（２０２）を２本平行させて形成し、前記２本の切れ目の上端及び下端からそれぞれ端縁部にわたる注出方向に対して直角方向の４本の切れ目を形成して左右対応する係止板（２３０ａ，２３０ｂ）を形成し、係止板のそれぞれに三角波状の注出方向の係止条部（２３１ａ，２３１ｂ）を複数個（図では、４個と３個）並列させて形成し、また、注出方向に対して直角方向の４本の切れ目の両端から端部にわたる８本の注出方向の折り目線（２０１）を形成する四角形状の開口維持シート（２００）を、注出方向に対して直角方向のほぼ中央に４本の折り目線と２本の切れ目とから形成する貼着板（２４０）の下面を裏側の合成樹脂フィルムの内面に接着して注出口部（１１０）の注出孔（１１２）に挿着するものである。そして、内容物を注出するときに、注出口部の先端を切断して注出孔を開口し、図５（ｃ）に示すように、開口維持シート（２００）の貼着板（２４０）の両側の折り目線（２０１）を包装袋（１００）の外側から指で押圧して内側へ折り曲げ、上昇する係止板（２３０ａ）の係止条部（２３１ａ）の下面に係止板（２３０ｂ）の係止条部（２３１ｂ）の上面を嵌着させると、平坦だった開口維持シートがワンタッチで立体構造となり、包装袋の注出口部の注出孔が開口した状態に維持されて内容物の流路（１１４）が確保される。
【００２３】
次に、本発明の他の一実施形態の開口維持シート付包装袋（１０）は、例えば、図６（ａ）及び（ｂ）に示すように、ほぼ中央位置に、注出方向に対し直角方向に平行な２本の切れ目（２０２ａ，２０２ｂ）とこの平行な２本の切れ目の一方側の端部間を結ぶ注出方向の切れ目（２０２ｃ）を形成して支柱板（２６０）を設け、この支柱板の平行な２本の切れ目の他方側の端部からそれぞれ上端及び下端にわたる折り目線（２０１ａ及び２０１ｂ）を形成する四角形状の開口維持シート（２００）を、支柱板を形成した側の支柱板を除く上面を表裏の合成樹脂フィルムのどちらか一方の内面に接着して注出口部の注出孔に挿着するものである。そして、内容物を注出するときに、注出口部の先端を切断して注出孔を開口し、図６（ｃ）に示すように、包装袋（１００）の外側から指で押圧し、開口維持シート（２００）の折り目線（２０１）を包装袋（１００）の外側から指で押圧して内側へ折り曲げると、開口維持シートの折り曲げ側の先端と支柱板（２６０）の先端とが注出孔を形成する合成樹脂フィルム内面に当接し、平坦だった開口維持シートがワンタッチで立体構造となり、包装袋（１００）の注出口部（１１０）の注出孔が開口した状態に維持されて内容物の流路（１１４）が確保される。
【００２４】
なお、上述の本実施形態の開口維持シート付包装袋を、従来の注出口部の注出孔にパイプを埋没した注出口部付包装袋と比較評価してみたが、本実施形態の開口維持シート付包装袋は、流通及び保管時の集積効率が良く、内容物充填機上での包装袋の搬送に係わるトラブルの発生がなく充填効率が良好であった。また、注出孔からの内容物の注出状態は、従来のものと比較して遜色がなかった。
【００２５】
【発明の効果】
本発明の開口維持シート付包装袋は、注出口部が包装袋本体と同様に平坦であるので、流通及び保管時の集積効率がよく、また、通常の内容物充填機でも包装袋の搬送上のトラブルを発生しない。
【００２６】
また、本発明の開口維持シート付包装袋は、使用時に注出口部の先端を切断して開封し、注出孔に挿着されている開口維持シートを、設けられている折り目線により折り曲げて、立体構造にワンタッチで変えることができ、この立体構造の開口維持シートが注出孔を開口状態に維持するため、他の容器へ内容物を移し替えるときに、内容物を注出孔から注出し易い。
【図面の簡単な説明】
【図１】（ａ）は、本発明の一実施形態の開口維持シート付包装袋の注出口部の構造を示す説明図であり、（ｂ）は、そのＡ−Ａ’線断面図であり、（ｃ）は、内容物を注出するときの注出口部内の状態を示す断面図である。
【図２】（ａ）は、本発明の他の一実施形態の開口維持シート付包装袋の注出口部の構造を示す説明図であり、（ｂ）は、そのＢ−Ｂ’線断面図であり、（ｃ）は、内容物を注出するときの注出口部内の状態を示す断面図である。
【図３】（ａ）は、本発明の他の一実施形態の開口維持シート付包装袋の注出口部の構造を示す説明図であり、（ｂ）は、そのＣ−Ｃ’線断面図であり、（ｃ）は、内容物を注出するときの注出口部内の状態を示す断面図である。
【図４】（ａ）は、本発明の他の一実施形態の開口維持シート付包装袋の注出口部の構造を示す説明図であり、（ｂ）は、そのＤ−Ｄ’線断面図であり、（ｃ）は、内容物を注出するときの注出口部内の状態を示す断面図である。
【図５】（ａ）は、本発明の他の一実施形態の開口維持シート付包装袋の注出口部の構造を示す説明図であり、（ｂ）は、そのＥ−Ｅ’線断面図であり、（ｃ）は、内容物を注出するときの注出口部内の状態を示す断面図である。
【図６】（ａ）は、本発明の他の一実施形態の開口維持シート付包装袋の注出口部の構造を示す説明図であり、（ｂ）は、そのＧ−Ｇ’線断面図であり、（ｃ）は、内容物を注出するときの注出口部内の状態を示す断面図である。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a packaging bag for refilling liquid detergents, toiletries, fruit drinks, seasonings, and the like, and more particularly, to a packaging bag with an opening maintaining sheet that facilitates pouring of contents.
[0002]
[Prior art]
In recent years, from the standpoint of environmental conservation and resource saving, refill containers have been widely used for various liquid contents. As the refill container, there is a flexible bag with a spout made of a synthetic resin film which is used by cutting the spout and opening the spout hole at the time of use. In order to improve the ease of dispensing, for example, a spout hole of a spout portion described in JP-A-8-2538 is formed into a hollow cylindrical shape or a hollow semi-cylindrical shape. It is known that a semi-rigid or hard pipe is buried in a pouring hole of a pouring port described in US Pat.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional packaging bag with a spout, before the contents are filled, the packaging bag body is flat but the spout has a three-dimensional structure. In addition, when the contents are filled, troubles in transporting the packaging bag in the filling machine are liable to occur, so that a special transport device or the like may be required.
[0004]
The present invention has solved the above-mentioned problem of the conventional packaging bag with a spout, and has a flat spout and good accumulation efficiency during distribution and storage, and transport of the packaging bag on a content filling machine. It is an object of the present invention to provide a packaging bag with an opening maintaining sheet which has no trouble as described above, and which can be formed into a three-dimensional structure which makes it easy to pour out the spout hole in the spout portion at the time of use.
[0005]
[Means for Solving the Problems]
That is, as shown in FIGS. 1A and 1B, the first invention of the present invention has a spout portion (110) that cuts a tip at the time of use to open a spout hole (112), In a flexible packaging bag (100) in which the peripheral edges of the front and back synthetic resin films are sealed, a fold line (201) in the pouring direction is formed in the pouring hole of the pouring port in a direction perpendicular to the pouring direction. A square-shaped opening maintaining sheet (200) formed substantially at the center position is attached by attaching one of the lower surfaces on the left or right side of the fold line to the inner surface of one of the front and back synthetic resin films. A packaging bag (10) with an opening maintaining sheet, characterized in that a locking sheet (300) is adhered to and protruded from the inner surface of the synthetic resin film on the side corresponding to the opening maintaining sheet.
[0006]
Next, as shown in FIGS. 2A and 2B, the second invention of the present invention has a spout portion (110) that cuts the tip at the time of use to open a spout hole (112). In a flexible packaging bag (100) formed by sealing the peripheral portions of the front and back synthetic resin films, a fold line (201) in the pouring direction is perpendicular to the pouring direction in the pouring hole of the pouring port. A square-shaped opening maintaining sheet (200) formed substantially at the center of the fold line is attached to the inner surface of one of the front and back synthetic resin films, with the lower surface on either the left or right side of the fold line adhered to the inner surface. And a locking groove or a locking projection (113) is formed on the inner surface of the synthetic resin film on the side corresponding to the opening maintaining sheet.
[0007]
Next, as shown in FIGS. 3A and 3B, the third invention of the present invention has a spout portion (110) that cuts a tip at the time of use to open a spout hole (112). In a flexible packaging bag (100) in which the peripheral edges of the synthetic resin film on the front and back are sealed, a fold line (201a) in the pouring direction is formed at a substantially central position in a direction perpendicular to the pouring direction. One or more locking projections (210) are formed on the upper surface of either the left or right side of the line in parallel with the pouring direction, and the pouring direction is located substantially at the center of the other side at right angles to the pouring direction. Of the square-shaped opening maintaining sheet (200) forming the fold line (201b) is bent inward from the former fold line (201a), and the space between the fold line and the latter fold line (201b) is formed. Place the lower surface on one of the front and back synthetic resin films. An opening maintaining packaging bag with a sheet adhered to the to the inner surface, characterized in that it has inserted into the note Deana of the spout (10).
[0008]
Next, as shown in FIGS. 4A and 4B, the fourth invention of the present invention has a spout portion (110) that cuts the tip at the time of use to open a spout hole (112). In a flexible packaging bag (100) in which the peripheral edges of the front and back synthetic resin films are sealed, a fold line (201) in the pouring direction is formed at a substantially central position in a direction perpendicular to the pouring direction, and An upwardly bent plate (220) comprising a cut (202c) in the pouring direction and two cuts (202a, 202b) perpendicular to the pouring direction is positioned substantially at the center in the direction perpendicular to the pouring direction. And a square-shaped opening maintaining sheet (200) formed over one edge portion of the spout, and the upper surface of the side on which the bent plate is not formed is adhered to either one of the inner surfaces of the front and back synthetic resin films, and the spout portion is formed. Characterized by being inserted into the spout hole It is with equity sheet packaging bag (10).
[0009]
Next, as shown in FIGS. 5A and 5B, the fifth invention of the present invention has a spout portion (110) that cuts the tip at the time of use to open a spout hole (112). In a flexible packaging bag (100) obtained by sealing the peripheral edges of the front and back synthetic resin films, two cuts (202) in the pouring direction are formed substantially parallel to the center, and the two cuts are formed. Four cuts are formed at right angles to the pouring direction extending from the upper end and the lower end to the edge, thereby forming locking plates (230a, 230b) corresponding to the right and left, and each of the locking plates has a triangular wave shape. One or more locking strips (231a, 231b) in the pouring direction are formed in parallel, and eight pourings extending from both ends to the ends of four cuts perpendicular to the pouring direction are provided. A square opening maintaining sheet forming a fold line (201) in the outgoing direction The lower surface of the adhesive plate (240) formed from the four fold lines and the two cut lines at substantially the center in the direction perpendicular to the pouring direction is attached to one of the front and back synthetic resin films. A packaging bag (10) with an opening maintaining sheet, which is adhered to one inner surface and inserted into the spout hole of the spout portion.
[0011]
The sixth aspect of the present invention, as shown in FIG. 6 (a) and (b), has a spout that opens Note Deana (112) by cutting the tip at the time of use (110), In a flexible packaging bag (100) in which the peripheral edges of the front and back synthetic resin films are sealed, two cuts (202a, 202b) parallel to the direction perpendicular to the pouring direction are formed substantially at the center position. A support plate (260) is provided by forming a cut (202c) in the pouring direction connecting one end of the two cuts, and from the other end of the two parallel cuts of the support plate. A square-shaped opening maintaining sheet (200) forming fold lines (201a and 201b) extending over the upper and lower ends, respectively, and the upper surface excluding the support plate on which the support plate is formed is either one of the front and back synthetic resin films. Glued to the inner surface of A packaging bag (10) with an opening maintenance sheet, which is inserted into an outlet hole of a mouth.
[0012]
[Action]
Until the contents are filled, the packaging bag with the opening maintaining sheet of the present invention is flat because both the spout and the packaging bag body are flat, so that the efficiency of accumulation during distribution and storage is good, and the contents on the content filling machine can be improved. There is no trouble in transporting the packaging bag, and no special equipment for transport is required.
[0013]
Further, the packaging bag with an opening maintaining sheet of the present invention is used because the opening maintaining sheet made of a rigid synthetic resin sheet and provided with a fold line so as to be foldable is inserted into the spout hole of the spout. Sometimes the tip of the spout is cut off to open the container, and the opening maintenance sheet inserted into the spout is bent by the fold line provided to easily change from a flat state to a three-dimensional structure. When the contents are transferred to another container, the three-dimensional structure of the opening maintaining sheet keeps the opening of the outer spouting hole formed of a flexible synthetic resin film. Easy to put out.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
The packaging bag (10) with an opening maintaining sheet according to the present invention has, for example, a spout portion (110) that cuts a tip and opens a spout hole (112) when used, as shown in FIG. 1 (a). An opening maintaining sheet (200) that is bendable, flat and has appropriate rigidity is provided in an outlet hole (112) of an outlet of a flexible packaging bag (100) formed by sealing a peripheral portion of a front and back synthetic resin film. When the contents are poured out, the opening maintaining sheet (200) is folded into a three-dimensional structure as shown in FIG. 1 (c).
[0015]
The above-mentioned packaging bag with an outlet is usually composed of a stretched polyester film layer / polyethylene layer structure, a stretched polyester film layer / unstretched polypropylene film layer structure, a nylon film layer / polyethylene layer structure, a nylon film layer / unstretched polypropylene film. Layer structure, nylon film layer / aluminum foil layer / polyethylene layer structure, nylon film layer / aluminum foil layer / unstretched polypropylene film layer structure, stretched polyester film layer / stretched nylon film layer / polyethylene layer structure, stretched polyester film layer / stretched Nylon film layer / unstretched polypropylene film layer structure, stretched polyester film layer / aluminum foil layer / nylon film layer / polyethylene layer structure, stretched polyester film layer / aluminum foil layer Nylon film layer / Non-stretched polypropylene film layer structure, Nylon film layer / Tearable stretched polypropylene film layer / Aluminum foil layer / Polyethylene layer structure, Nylon film layer / Tearable stretched polypropylene film layer / Aluminum foil layer / Non-stretched polypropylene film layer Structure, tearable nylon film layer / polyethylene layer structure, tearable nylon film layer / non-stretched polypropylene film layer structure, etc., are laminated face-to-face, and the periphery is heated as shown in FIG. 1 (a). It is manufactured by providing a seal portion (101) by a heat fusion method such as a seal method. Depending on the purpose of use, a single-layer film may be used. In addition, a notch (111) for opening is usually formed in the spout portion. The form of the packaging bag may be a well-known flat pouch which is not self-supporting, and may be provided with a bottom member at the bottom for standing. It may be a pouch.
[0016]
The opening maintaining sheet is a single-layer sheet of polyethylene or polypropylene or a polyethylene layer / polystyrene layer / polyethylene layer structure, a non-stretched polypropylene film layer / polystyrene layer / unstretched polypropylene film layer structure, a polyethylene layer / stretched polyester film layer / Use a laminated sheet such as a polyethylene layer structure, unstretched polypropylene film layer / stretched polyester film layer / unstretched polypropylene film layer structure, or a single layer sheet such as polyethylene / polypropylene blended resin, polyethylene / polystyrene blended resin, or polypropylene / polystyrene blended resin. The fold line is formed by creasing or half-cutting in accordance with the bending direction.
[0017]
The packaging bag (10) with an opening maintaining sheet according to one embodiment of the present invention is, for example, as shown in FIGS. 1 (a) and 1 (b), in a pouring hole (112) of a pouring port (110). A square-shaped opening maintaining sheet (200) in which the fold line (201) in the outgoing direction is formed at a substantially central position in the direction perpendicular to the pouring direction is combined with the lower surface on the left side of the fold line to form a spout. It is bonded to the inner surface of the resin film by using a heat fusion method or an adhesive, and the locking sheet (300) is bonded to the inner surface of the synthetic resin film on the front side by using a heat fusion method or an adhesive. It is attached and projected. Then, when the contents are to be poured out, the tip of the pouring opening is cut to open a pouring hole, and as shown in FIG. 1 (c), the fold line (201) of the opening maintaining sheet (200) is cut. Pressing the outer side of the packaging bag (100) with a finger to bend it inward, and hooking the bent side end of the opening maintaining sheet to a locking sheet (300) projecting to the right side of the inner surface of the upper synthetic resin film, The flattened opening maintaining sheet has a three-dimensional structure with one touch, and the spouting hole of the spout of the packaging bag is maintained in an open state to secure the flow path (114) for the contents.
[0018]
Next, as shown in FIGS. 2A and 2B, for example, as shown in FIGS. 2A and 2B, a packaging bag (10) with an opening maintaining sheet according to another embodiment of the present invention has a pouring hole (110). 112), a square opening maintaining sheet (200) having a fold line (201) in the pouring direction formed substantially at a central position in a direction perpendicular to the pouring direction, and a lower surface on the left side of the fold line serving as a spout portion. The synthetic resin film on the back side to be formed is bonded to the inner surface of the synthetic resin film by using a heat sealing method or an adhesive, and a locking groove (113) is formed on the inner surface of the synthetic resin film on the front side. . Then, when the content is to be poured, the tip of the spout is cut to open a pouring hole, and as shown in FIG. 2C, the fold line (201) of the opening maintaining sheet (200) is cut. Pressing the outer side of the packaging bag (100) with a finger to bend it inward, and hooking the bent side end of the opening maintaining sheet to the locking groove (113) formed on the right side of the inner surface of the upper synthetic resin film, it is flat. The opening maintaining sheet has a three-dimensional structure with a single touch, and the outlet of the outlet of the packaging bag is maintained in an open state to secure the flow path (114) for the contents.
[0019]
Next, as shown in FIGS. 3 (a) and 3 (b), for example, as shown in FIGS. 3 (a) and 3 (b), the packaging bag (10) with an opening maintaining sheet according to another embodiment of the present invention has a fold line (201a) in the pouring direction. It is formed at a substantially central position in a direction perpendicular to the ejection direction, and four locking projections (210) are formed on the upper surface on the right side of the fold line in parallel with the ejection direction, and are perpendicular to the left ejection direction. A square opening maintaining sheet (200) forming a fold line (201b) in the pouring direction at a substantially central position in the direction is bent inward at the fold line (201a) to form a fold line (201a) and a fold line (201b). ) Is adhered to the inner surface of the synthetic resin film on the back side using a heat sealing method or an adhesive, and is inserted into the pouring hole (212) of the pouring port (110). Then, when the content is to be poured, the tip of the spout is cut to open the pouring hole, and as shown in FIG. 3C, the fold line (201b) of the opening maintaining sheet (200) is cut. Pressing the outer side of the packaging bag (100) with a finger to bend it inward, and hooking the bent side end of the opening maintaining sheet to the locking projection (210) formed on the right side of the inner surface of the upper synthetic resin film makes it flat. The opening maintaining sheet has a three-dimensional structure with a single touch, and the outlet of the outlet of the packaging bag is maintained in an open state to secure the flow path (114) for the contents.
[0020]
Next, as shown in FIGS. 4 (a) and 4 (b), for example, as shown in FIGS. 4 (a) and 4 (b), the packaging bag (10) with an opening maintaining sheet according to another embodiment of the present invention has a fold line (201) in the pouring direction. A bent plate that is formed at a substantially central position in a direction perpendicular to the discharge direction and that is upwardly curved including a cut (202c) in the pouring direction and two cuts (202a, 202b) in a direction perpendicular to the pouring direction. (220) is formed from a substantially central position in a direction perpendicular to the pouring direction to a right edge, and a square-shaped opening maintaining sheet (200) is formed. The film is adhered to the inner surface of the film using a heat fusion method or an adhesive, and is inserted into the pouring hole (112) of the pouring port (110). Then, when the content is to be poured, the tip of the spout is cut to open a pouring hole, and as shown in FIG. 4C, the fold line (201b) of the opening maintaining sheet (200) is cut. When the packing bag (100) was pressed with a finger from the outside and bent inward, the bent side end of the opening maintaining sheet and the bent plate end contacted the inner surface of the synthetic resin film forming the pouring hole, and were flat. The opening maintaining sheet has a three-dimensional structure with one touch, and the outlet of the outlet of the packaging bag is maintained in an open state, and the flow path (114) of the contents is secured.
[0021]
Next, as shown in FIGS. 5 (a) and 5 (b), for example, as shown in FIGS. ) Are formed in parallel with each other, and four cuts are formed in the direction perpendicular to the pouring direction extending from the upper end and the lower end of the two cuts to the edge portions, respectively, and the locking plates (230a) corresponding to the left and right are formed. , 230b), and a plurality of (three and four in the figure) triangular-wave-shaped pouring direction locking strips (231a, 231b) are formed in parallel on each of the locking plates. A rectangular opening maintaining sheet (200) forming eight fold lines (201) in the pouring direction extending from both ends to the ends of the four cuts perpendicular to the pouring direction is inserted into the pouring direction. A stick formed from four fold lines and two cuts at approximately the center in the right angle direction It is intended to inserted into the plate spout a lower surface bonded to the inner surface of the synthetic resin film on the back of (240) (110) Note Deana (112). And when pouring out the contents, the tip of the spout is cut to open the pouring hole, and as shown in FIG. 5 (c), the sticking plate (240) of the opening maintaining sheet (200). The folding line (201) on both sides of the packaging bag (100) is pressed by a finger from the outside of the packaging bag (100) and bent inward, and the locking plate (230b) is placed on the lower surface of the locking strip (231a) of the rising locking plate (230a). ), The upper surface of the flattened opening maintaining sheet has a three-dimensional structure with one touch, and the spout of the spout of the packaging bag is maintained in an open state. Channel (114) is secured.
[0023]
Next, as shown in FIGS. 6 (a) and 6 (b), for example, a packaging bag (10) with an opening maintaining sheet according to another embodiment of the present invention is substantially at the center position and at right angles to the pouring direction. A column plate (260) is formed by forming two cuts (202a, 202b) parallel to the direction and a cut (202c) in the pouring direction connecting one end of the two parallel cuts; A square opening maintaining sheet (200) forming fold lines (201a and 201b) extending from the other end of the two parallel cuts of the support plate to the upper end and lower end, respectively, is provided on the side on which the support plate is formed. The upper surface excluding the support plate is adhered to one of the inner surfaces of the front and back synthetic resin films and inserted into the spout hole of the spout portion. And when pouring out the contents, the tip of the spout is cut off to open a pouring hole, and as shown in FIG. 6 (c), it is pressed with a finger from the outside of the packaging bag (100), When the fold line (201) of the opening maintaining sheet (200) is pressed with a finger from the outside of the packaging bag (100) to be bent inward, the tip of the folded side of the opening maintaining sheet and the tip of the support plate (260) are filled. The flat opening maintaining sheet which comes into contact with the inner surface of the synthetic resin film forming the outlet hole has a one-touch three-dimensional structure, and the outlet hole of the outlet (110) of the packaging bag (100) is maintained in an open state. A flow path (114) for the contents is secured.
[0024]
The above-described packaging bag with an opening maintaining sheet of the present embodiment was compared and evaluated with a conventional packaging bag with a spout portion in which a pipe was buried in a spout hole of a spout portion. The packaging bag with sheet had good accumulation efficiency at the time of distribution and storage, and there was no trouble related to transport of the packaging bag on the content filling machine, and the filling efficiency was good. In addition, the state of the contents being discharged from the discharge hole was not inferior to the conventional one.
[0025]
【The invention's effect】
The packaging bag with the opening maintaining sheet of the present invention has a flat spout as well as the packaging bag main body, so that the accumulation efficiency at the time of distribution and storage is good, and the packaging bag can be transported even with a normal contents filling machine. Does not cause trouble.
[0026]
In addition, the packaging bag with the opening maintaining sheet of the present invention is formed by cutting the tip of the spout portion at the time of use, opening the opening, and bending the opening maintaining sheet inserted into the pouring hole by the provided fold line. The three-dimensional structure can be changed with one touch, and the opening maintenance sheet of this three-dimensional structure keeps the pouring hole in the open state, so when transferring the contents to another container, the contents are poured from the pouring hole. Easy to put out.
[Brief description of the drawings]
FIG. 1A is an explanatory view showing a structure of a spout portion of a packaging bag with an opening maintaining sheet according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along the line AA ′. And (c) is a cross-sectional view showing a state inside the spout when the contents are poured out.
FIG. 2A is an explanatory view showing a structure of a spout portion of a packaging bag with an opening maintaining sheet according to another embodiment of the present invention, and FIG. 2B is a sectional view taken along line BB ′ of FIG. (C) is a cross-sectional view showing a state in the spout when the contents are poured out.
FIG. 3A is an explanatory view showing a structure of a spout portion of a packaging bag with an opening maintaining sheet according to another embodiment of the present invention, and FIG. 3B is a cross-sectional view taken along line CC ′. (C) is a cross-sectional view showing a state inside the spout when the contents are poured out.
FIG. 4A is an explanatory view showing a structure of a spout portion of a packaging bag with an opening maintaining sheet according to another embodiment of the present invention, and FIG. 4B is a sectional view taken along line DD ′ of FIG. (C) is a cross-sectional view showing a state inside the spout when the contents are poured out.
FIG. 5A is an explanatory view showing a structure of a spout portion of a packaging bag with an opening maintaining sheet according to another embodiment of the present invention, and FIG. 5B is a sectional view taken along line EE ′ of FIG. (C) is a cross-sectional view showing a state in the spout when the contents are poured out.
FIG. 6 (a) is an explanatory view showing a structure of a spout portion of a packaging bag with an opening maintaining sheet according to another embodiment of the present invention, and FIG. 6 (b) is a sectional view taken along line GG ′ of FIG. (C) is a cross-sectional view showing a state inside the spout when the contents are poured out.

Claims

In a flexible packaging bag having a spout that cuts the tip at the time of use to open a spout hole and seals the peripheral edges of the synthetic resin film on the front and back, pouring the spout into the spout hole of the spout A square opening maintaining sheet formed with a fold line in the direction substantially at the center in the direction perpendicular to the pouring direction, and the lower surface on either the left side or the right side of the fold line is either the front or back synthetic resin film. A packaging bag with an opening maintaining sheet, wherein an engaging sheet is attached to and protruded from an inner surface of a synthetic resin film on a side corresponding to the opening maintaining sheet. .

In a flexible packaging bag having a spout that cuts the tip at the time of use to open a spout hole and seals the peripheral edges of the synthetic resin film on the front and back, pouring the spout into the spout hole of the spout A square opening maintaining sheet formed with a fold line in the direction substantially at the center in the direction perpendicular to the pouring direction, and the lower surface on either the left side or the right side of the fold line is either the front or back synthetic resin film. A packing bag with an opening maintaining sheet, wherein a locking groove or a locking projection is formed on the inner surface of the synthetic resin film on the side corresponding to the opening maintaining sheet by being bonded and inserted to one inner surface. .

In a flexible packaging bag that has a spout that cuts the tip when used and opens the spout hole, and seals the peripheral edge of the synthetic resin film on the front and back, the fold line in the pouring direction is aligned with the pouring direction. It is formed at a substantially central position in a right angle direction, and one or more locking projections are formed in parallel with the pouring direction on one of the upper surfaces on the left side or the right side of the fold line, and are perpendicular to the other side. A square opening maintaining sheet forming a fold line in the pouring direction at a substantially central position in the direction, the former fold line is bent inward, and the lower surface between the fold line and the latter fold line is A packaging bag with an opening maintenance sheet, wherein the packaging bag is adhered to one of the inner surfaces of the front and back synthetic resin films and inserted into the pouring hole of the pouring port.

In a flexible packaging bag that has a spout that cuts the tip when used and opens the spout hole, and seals the peripheral edge of the synthetic resin film on the front and back, the fold line in the pouring direction is aligned with the pouring direction. A bent plate that is formed at a substantially central position in a right angle direction and that is upwardly bent and includes a cut in the pouring direction and two cuts in a direction perpendicular to the pouring direction is provided at a substantially center in a direction perpendicular to the pouring direction. A square-shaped opening maintaining sheet formed from the position to one edge portion is bonded to the inner surface of one of the front and back synthetic resin films by bonding the upper surface on the side where the bent plate is not formed to the spout. A packaging bag with an opening maintenance sheet, which is inserted into an outlet.

In a flexible packaging bag that has a spout that cuts the tip when used and opens a pouring hole, and seals the peripheral edge of the synthetic resin film on the front and back, two cuts in the pouring direction are almost at the center. The two cuts are formed in parallel, and four cuts are formed in the direction perpendicular to the pouring direction extending from the upper end and the lower end of the two cuts to the respective edge portions to form locking plates corresponding to left and right. One or more triangular-wave-shaped pouring direction locking strips are formed in parallel on each of the stop plates, and eight from the both ends to the ends of four cuts perpendicular to the pouring direction. A lower surface of an adhesive plate formed by forming a square-shaped opening maintaining sheet forming a fold line in the pouring direction from the four fold lines and two cuts substantially at the center in a direction perpendicular to the pouring direction. To the inner surface of either of the front and back synthetic resin films Opening maintain the packaging bag with the sheet, characterized in that it has inserted into the note Deana of the spout.

A flexible packaging bag that has a spout that cuts the tip when used and opens a spout hole, and seals the peripheral edges of the synthetic resin film on the front and back. A support plate is formed by forming a cut in the pouring direction that connects between two parallel cuts and one end of the two parallel cuts, and the other of the two parallel cuts of the support plate A square opening maintaining sheet forming a fold line extending from the end on the side to the upper end and the lower end respectively, the upper surface excluding the support plate on the side on which the support plate is formed is provided on one of the inner surfaces of the front and back synthetic resin films. A packaging bag with an opening maintaining sheet, which is adhered and inserted into the pouring hole of the pouring port.