JP4866502B2 - Fluid packaging bag - Google Patents
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- JP4866502B2 JP4866502B2 JP2000396432A JP2000396432A JP4866502B2 JP 4866502 B2 JP4866502 B2 JP 4866502B2 JP 2000396432 A JP2000396432 A JP 2000396432A JP 2000396432 A JP2000396432 A JP 2000396432A JP 4866502 B2 JP4866502 B2 JP 4866502B2
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【０００１】
【発明の属する技術分野】
本発明は、流体包装袋、さらに詳しくは、人の片手で握ったり、しごいたりする程度の簡単な操作で、また親指と人差指で摘む程度の弱い力で、内容物を一定量ほど注出でき、しかも、袋を逆様に吊下げているとき又は横に寝かせているときであっても流出することがない構造をした自己閉鎖性流出通路付きの流体包装体に関する。
【０００２】
【従来の技術】
従来、マヨネーズ、コーヒー、ジュース、シャンプー、リンス、ボディソープ等の液体調味料、飲料品、洗濯用や台所用の液体洗剤等は、プラスチック製のボトルや袋に充填されて販売・使用されてきた。ボトル入りは、高級感があり、自立性があるので店頭にてディスプレイしやすく、使用時においてもキャップの脱着により、所望量を注ぎだすことができ、液漏れしない状態で保存できるが、コストが高いこと、流通・保管・廃棄時にデッドスペースを生じること、資源の浪費になること等の問題があった。
【０００３】
これを解決するためのものとして、ポリエチレン、エチレン−酢酸ビニル共重合体、エチレン−ビニルアルコール共重合体、ポリアミド、ポリエステル等の単層又は多層フィルムを重合し、周囲を溶着し、底部の構造を自立できる様にし、上部には、ボトルと同じ構造のキャップを付けたスタンディングパウチが、コストがやすく、容積も嵩張らなく、省資源的であるので、ボトルの需要の一部を置換して使用されてきている。
その１つとしては、本出願人が開発し製品化した、長方形の２枚のプラスチックフィルムを重合し、その周辺を溶着して、流体を入れる袋を形成し、上側の溶着部に、非溶着部の流出通路をその基端を袋内に連通すると共にその閉鎖先端を隅角部に配置して形成した流出通路付き流体包装袋がある。これは、図１に示す如き構造を有しており、その形状から判るように、流体充填後、上側の隅角部を切って流出通路の先端を開放し、袋を握って袋内の流体を圧迫すると、流体が流出通路から流出し、一方、袋を握る力を弱めると、流体の流出が停止し、次いで流出通路に残っている流体を絞り出すと、袋を任意の位置にしても、袋内の流体を圧迫しない限り、流体が流出通路から流出しない自己閉鎖性流出通路付きの流体包装袋である。そして、この製品を使用するときは、図２に示すような操作・工程に従い、袋を押せば内容物が流出し、押すことを止めれば流出がとまるので、その都度キャップをしめる煩わしさがなく、ボトルの様に転倒により内容物が流出し周囲を汚すことなく、内容物の損失も発生しないので、近年、大量に使用されるようになってきた。
【０００４】
しかしながら、自己閉鎖性流出通路付きのスタンディングパウチは、そのまま使うことは少なく、ボトルへの詰め替え用として使われるため、スタンディング（自立）構造を取り去って自己閉鎖性流出通路付きの袋に機能を絞り、例えば、風呂場などでそのまま逆様に吊下げて使用する製品が登場してきた。こうした製品では、パウチ（袋）を逆様に吊下げて使用するため、取り扱い性が悪く、特に握って使用するので折れ曲がりにより内容物の出難さが起こったり、或いは、注出方向の安定性が悪いので内容物を注出するのに非常に力が必要であったり、或いは、力を入れ過ぎると必要以上に内容物が飛び出し、放出量（使用量）が一定にならないといった問題が発生した。
こうした問題点を解決する１つの手段としては、弱い力で袋を握って内容物を注ぎだすためには、流出通路の幅を大にし、屈曲部分を少なくし、フィルム間のクリアランスを大きくすれば可能であるが、液体流通に対する抵抗が弱くなっているので、袋を逆様に吊下げて使用している場合には、液体の自重程度の圧力で、液体は流出通路を通過し流出してしまい、初期の目的を達することはできない。
【０００５】
【発明が解決しようとする課題】
本発明は、上記の問題点に鑑み、人が片手で握ったり、しごいたりする程度の簡単な操作で、また親指と人差指で摘む程度の弱い力で、内容物を一定量ほど注出でき、しかも、袋を逆様に吊下げているとき又は横に寝かせているときであっても流出することがない構造をした自己閉鎖性流出通路付きの流体包装体を提供することを課題とする。
【０００６】
【発明が解決するための手段】
本発明者は、上記課題を解決すべく鋭意研究を重ねた結果、長方形の２枚のプラスチックフィルムを重合し、その周辺を溶着して、流体を入れる袋を形成し、上側の溶着部に、非溶着部の流出通路をその基端を袋内に連通すると共にその閉鎖先端を隅角部に配置して形成した自己閉鎖性流出通路付き流体包装袋において、流出通路の基端側（入口側）に中空定量部を設けることにより、所望とする結果が得られること、さらには、中空定量部の設置に加えて線状凸部を設けるとさらに良い結果が得られることを見出し、本発明を完成させるに至った。
【０００７】
すなわち、本発明の第１発明によれば、長方形の２枚のプラスチックフィルムを重合し、その周辺を溶着して、流体を入れる袋を形成し、上側の溶着部に、非溶着部の流出通路をその基端を袋内に連通すると共にその閉鎖先端を隅角部に配置して形成した流出通路付きの流体包装袋において、流出通路の基端側に、形状が球形、楕円球形、重円錐台形、又は重３角錐台形のいずれかであり、容積が１〜１０ｃｍ３である中空定量部を設けるとともに、前記流出通路の基端をまたぐように、少なくとも１つの線状凸部を設け、かつ上記流出通路の中空定量部を除いた部分は、液体の流入・通過に対して抵抗を生じる屈曲形状となっていることを特徴とする流体包装袋が提供される。
【００１１】
さらに、本発明の第２発明によれば、第１の発明において、長方形の２枚のプラスチックフィルムを重合し、その周辺を溶着して、流体を入れる袋を形成するとき、周辺の一部に、袋に流体を充填するための非溶着部の開口部が設けてあることを特徴とする流体包装袋が提供される。
【００１２】
さらに、本発明の第３発明によれば、第１又は２の発明において、袋の下部の溶着部の一部に、袋を逆様につりさげるための貫通穴又は取手が設けてあることを特徴とする流体包装袋が提供される。
【００１３】
さらにまた、本発明の第４発明によれば、第１〜３のいずれかの発明において、流出通路を形成する非溶着部の周囲を囲む溶着部を、流出通路に内圧がかかった場合でも破裂しない限度の幅で、かつ流出通路に相似した形状の幅を残したまま、型抜き加工することを特徴とする流体包装袋が提供される。
【００１４】
さらにまた、本発明の第５発明によれば、第１〜４のいずれかの発明において、流出通路を形成する非溶着部の周囲を囲む溶着部を、袋の上辺の位置であって隅角部から流出通路を残すことができる位置を起点として、上辺に垂直に袋の下辺に向けて先端の溶着幅を残したまま、スリット加工することを特徴とする流体包装袋が提供される。
【００１５】
さらにまた、本発明の第６発明によれば、第１〜５のいずれかの発明において、袋の下部が自立構造となっていることを特徴とする流体包装袋が提供される。
【００１６】
さらにまた、本発明の第７発明によれば、第１〜６のいずれかの発明において、流体包装袋に流体を充填し、袋の上部を下に、下部を上にし、袋を逆様につりさげるための貫通穴又は取手で袋を吊下げ、隅角部を切って流出通路の先端を開放し、中空定量部を手で圧搾又はしごきにより中空定量部内の流体を必要時のみ定量注出させる方法が提供される。
【００１７】
【発明の実施の形態】
以下に、本発明を詳細に説明する。
【００１８】
１．プラスチックフィルム
本発明の流体包装袋を作るために使用するプラスチックフィルムは、高圧法低密度ポリエチレン（ＨＰ−ＬＤＰＥ）、直鎖状低密度ポリエチレン（ＬＬＤＰＥ）、直鎖状超低密度ポリエチレン（ＶＬＤＰＥ）、メタロセン触媒によるポリエチレン（ＭＣＡＴ−ＰＥ）、高密度ポリエチレン（ＨＤＰＥ）、エチレン−酢酸ビニル共重合体（ＥＶＡ）、エチレン−エチルアクリレート共重合体（ＥＥＡ）、エチレン−アクリル酸共重合体（ＥＡＡ）、アイオノマー（ＩＯＮＯＭＥＲ）、エチレン−ビニールアルコール共重合体（ＥＶＯＨ）、ポリアミド（ＰＡ）、ポリエステル（ＰＥＴ）、ポリカーボネート（ＰＣ）、ポリプロピレン（ＰＰ）、アルミニウム（ＡＬ）等の単層フィルム、又はそれらから選択された樹脂の多層フィルムを使用する。単層フィルム、又はそれらから選択された樹脂の多層フィルムは、延伸されていてもよい。特に、２軸延伸ポリアミドフィルム（ＯＰＡ）、２軸延伸ポリエステルフィルム（ＯＰＥＴ）、２軸延伸ポリプロピレン（ＯＰＰ）等を使用した積層フィルムが、引裂強度、耐突刺強度、引張強度、柔軟性、透明性、耐熱性、耐寒性、耐破裂性、低水蒸気透過性、低酸素透過性等の性質において優れており好ましい。積層フィルムの代表的な例としては、以下の構成が挙げられる。
【００１９】
・ＯＰＡ／ポリウレタン接着剤／ＯＰＡ／ポリウレタン接着剤／ＬＬＤＰＥ
・ＯＰＡ／アイオノマー接着剤／ＯＰＡ／アイオノマー接着剤／ＨＰ−ＬＤＰＥ
・ＯＰＡ／ポリウレタン接着剤／ＬＬＤＰＥ
・ＯＰＡ／アイオノマー接着剤／ＨＰ−ＬＤＰＥ
・ＯＰＡ／アイオノマー接着剤／ＡＬ箔／アイオノマー接着剤／ＭＣＡＴ−ＰＥ
・シリカ蒸着ＯＰＡ／ポリウレタン接着剤／ＬＬＤＰＥ
・ＯＰＡ／アイオノマー接着剤／ＯＰＰ／アイオノマー接着剤／ＥＶＡ
・アルミナ蒸着ＯＰＡ／アイオノマー接着剤／ＭＣＡＴ−ＰＥ
・ＯＰＥＴ／ポリウレタン接着剤／ＯＰＥＴ／ポリウレタン接着剤／ＬＬＤＰＥ
・ＯＰＥＴ／アイオノマー接着剤／ＯＰＥＴ／アイオノマー接着剤／ＥＥＡ
・ＯＰＥＴ／ポリウレタン接着剤／ＬＬＤＰＥ
・ＯＰＥＴ／アイオノマー接着剤／ＨＰ−ＬＤＰＥ
・ＯＰＥＴ／アイオノマー接着剤／ＡＬ箔／アイオノマー接着剤／ＭＣＡＴ−ＰＥ
・シリカ蒸着ＯＰＥＴ／ポリウレタン接着剤／ＬＬＤＰＥ
・ＯＰＥＴ／アイオノマー接着剤／ＯＰＰ／アイオノマー接着剤／ＥＶＡ
・アルミナ蒸着ＯＰＥＴ／アイオノマー接着剤／ＭＣＡＴ−ＰＥ
・ＯＰＥＴ／ポリウレタン接着剤／ＥＶＯＨ／ポリウレタン接着剤／ＬＬＤＰＥ
・ＯＰＥＴ／アイオノマー接着剤／ＥＶＯＨ／アイオノマー接着剤／ＭＣＡＴ−ＰＥ
・ＬＬＤＰＥ／ポリウレタン接着剤／ＥＶＯＨ／ポリウレタン接着剤／ＭＣＡＴ−ＰＥ
・ＭＣＡＴ−ＰＥ／アイオノマー接着剤／ＥＶＯＨ／アイオノマー接着剤／ＭＣＡＴ−ＰＥ
単層フィルムの場合、厚さは３０〜１００μｍ程度であり、積層フィルムの場合、構成する各層の厚さは５〜８０μｍ程度であり、合計の厚さは数１０〜１５０μｍ程度が好ましい。
【００２０】
２．液体
本発明において、液体とは本発明の包装体にいれる内容物であり、マヨネーズ、コーヒー、ミルク、ジュース、シャンプー、リンス、ボディソープ、洗濯用や台所用の液体洗剤、ナチュラルウォーター、ミネラルウォーター、清涼飲料、味噌、液体スープ、醤油、ラー油、そばつゆ、うどんつゆ、天ぷらつゆ、ジャム、甘酒、酒、ウイスキー、ワイン、焼酎、溶剤、化学薬品、ゲル状物等であり、粘度の低いものから高いものまで包装可能である。
【００２１】
３．流出通路
本発明において、流出通路とは、袋を握って袋内の流体を圧迫すると、流体が流出通路から流出し、袋を握る力を弱めると、流体の流出が停止し、次いで流出通路に残っている流体を絞り出すと、袋を任意の位置にしても、袋内の流体を圧迫しない限り、流体が流出通路から流出しない機能を有する液体の自己閉鎖性流出通路である。したがって、内容物の流体を袋外に流出させた後、袋を倒したり、流出通路の出口を下にして袋を吊下げても、内容物の流体が流出する事がないので、ボトル容器の場合の様に、使用後、その都度キャップを閉める手間が省け、能率が上がり便利である。
自己閉鎖性流出通路の形状は、例えば、Ｓ、Ｃ、Ｖ、Ｌ、Ｎ、Ｍ、Ｗ、く、へ、て、ん、し、つ、ひ、ろ、２、３、７等の形状か、それらを変形したものであり、直線状ではなく、流出通路の入口から出口の途中に液体の流動に対して抵抗を生じさせる屈曲部分を有することが必要である。
これらの具体例を図９〜１１に示したが、これらに限定されるものではない。
大きな抵抗を生じさせるには、流出通路の幅を狭くし、屈曲部分を多個所にすればよく、小さい抵抗を生じさせるには、流出通路の幅を大きくし、屈曲部分を１個所にすればよい。
流出通路の幅は、袋の容量・寸法によって異なるが、２〜２０ｍｍ程度であることが望ましい。
また、流出通路は２枚のプラスチックフィルムの間に形成されるので、通常は流体が通過しないときは、フィルム同士が密着している様に設計されているが、フィルムの流出通路形成部分を外面側に所定量だけ膨張させて突出させることもできる。突出させると、液体の流動に対して抵抗を低減できる効果があるが、突出量が多過ぎる場合は、内容物の流体を袋外に流出させた後、袋を倒したり、流出通路の出口を下にして袋を吊下げた場合に、袋内の内容物を圧迫しなくても、内容物が流出通路の出口から流出してしまうので、注意が必要である。
【００２２】
４．中空定量部
本発明において中空定量部とは、形状が、球形、楕円球形、重円錐台形、重楕円錐台形、重３角錐台形、重４角錐台形等であり、かつ中空状であり、流出通路の基端側（入口側）に設けられている。その例としては、図７の（Ａ）、（Ｂ）、（Ｃ）にしめした。図７の（Ａ）は重楕円錐台形、（Ｂ）は重４角錐台形、（Ｃ）は重３角錐台形を表す。
中空定量部の容積は、１〜１０ｃｍ３、好ましくは５〜１０ｃｍ３程度であり、親指と人差指で、摘んで圧力をかけたり、しごいたり、手のひらで握り圧力をかけることができるので、従来のように袋全体に圧力をかける場合と比較し、かける力も少なくてすみ、内容物の供給操作が容易である。また、袋全体に圧力をかける場合は、一旦放出を始めるとかなりの量が出てしまい、その量も定量にすることは難しく、しかも放出方向も定まらず不便であった。中空定量部があると、流体の一定量が流入しているので、流体を一回毎に定量する手間が省け作業合理化が達成できる。
また、中空定量部の容量は、袋全体の容量と比較すれば、１／１０〜１／２０程度の小容量であるので、袋全体に圧力をかける場合のように大きな圧力を加えなくとも、親指と人差指で、摘んで圧力をかけたり、しごいたり、手のひらで握り圧力をかける程度で単位面積当たりの圧力は、十分に内容物を流出させることがでるだけの圧力がえられるので、加圧作業の制御は楽に正確にできるので、放出量（使用量）や、放出方向を正確に定めることができる効果をもたらす。
【００２３】
例えば、風呂場でシャンプーを使うばあい、このシャンプー入り包装体を逆さに吊し、中空定量部を握り、目をつむったままシャンプーを片手で流出させ、一方の手の、てのひらで受け取ることができ、次いで中空定量部から手を離せばシャンプーの流出は自然に停止し便利である。別の例としては、ホテル等の大型厨房において、サラダドレッシングを度々使用する場合、中空にこのサラダドレッシング入り包装体を逆さに吊し、中空定量部を握り、サラダドレッシングを片手で流出させ、サラダにかけ、中空定量部から手を離せばサラダドレッシングの流出は自然に停止するので、料理人はすぐ他の調理の作業に移れるので手間が省け楽になる。さらに別の事例としては、大型ビルデングの床面を洗剤溶液で掃除したり、ワックスエマルジョン溶液でポリシングするとき、本発明の包装体に充填し、清掃車の一部に逆さに吊し、中空定量部を握り、洗剤溶液やワックスエマルジョン溶液を片手で定量だけ流出させ、床面に散布し、中空定量部から手を離せば洗剤溶液やワックスエマルジョン溶液の流出は自然に停止するので、掃除やポリシング作業は非常に楽になり、省人化が可能となる。
中空定量部の付加は、本発明の第１発明であり、本発明の最も重要な部分である。
【００２４】
５．線状凸部
本発明における線状凸部とは、図５の（Ａ）、（Ｂ）に示すように、幅が２〜１５ｍｍ程度、高さが１〜５ｍｍ程度、及び長さが１〜１０ｃｍ程度の、袋の表面から外に突出したものであり中は空洞となっている。ふくろの内部から見ると、溝状となっている。線状凸部の設置位置は、起点を袋の内部とし、流出通路の基端（入口）をまたぐようにし、終点を中空定量部の内部とし、線状凸部は概ね袋の長手方向に平行となっている。線状凸部は袋の内部から見ると、溝であるから袋内の溶液は、溝に流れこみ易くすみやかに溝の先端部すなわち中空定量部におくられる効果がある。特に、袋内部の溶液が少なくなった場合でも、すみやかに液体を中空定量部に送ることができる。線状凸部は、単数又は複数であってよく、線状凸部を組合せて、例えばＹ、Ｔ、Ｕ、Ｈ、Ｌ、Ｘ、Ｖ、Ｎ字状又はそれらの変形した形状であってもよい。それらの具体例を図６に示したがこれに限定されるものではない。
【００２５】
６．開口部
本発明において開口部とは、図１の右上部（３）に設けられており、液体を袋内に充填するための口であり、液体充填後は、ヒートシールされ溶着部となる。開口部の付加は、本発明の第２発明である。
【００２６】
７．貫通穴又は取手
本発明において貫通穴又は取手とは、図３又は図４の左上部に設けられるものであり、袋を逆さに吊下げるためのものである。本発明の袋は、任意の位置・方向においても、使うことができるが、袋を逆さに吊下げて使用する場合を特に考慮して設計してある。なお、図３又は図４は、線状凸部がないという点で、本発明の範囲外である。
【００２７】
８．型抜き加工して削除して形成させた流出通路部
本発明において型抜き加工して削除して形成させた流出通路部とは、図８の（Ｂ）に示す様な形状であり、非溶着部の流出通路を形成するためにその周囲を囲む溶着部を、流出通路を形成でき、流出通路に内圧がかかった場合でも破裂しない限度の幅であり、かつ流出通路に相似した形状の幅を残して型抜き加工して削除して形成させたものであり、手のひらで容易に流出通路部の全体を握ることができ中空定量部の中の液体を容易に全量を弱い力で、目的方向に放出させことができる。型抜き加工して削除して形成させた流出通路部の付加は、本発明の第４発明である。
【００２８】
９．スリット加工した流出通路部
本発明においてスリット加工した流出通路部とは、図８の（Ａ）に示す様な形状であり、非溶着部の流出通路を形成するためにその周囲を囲む溶着部を、袋の上辺の位置であって隅角部から流出通路を残すことができる位置を起点として、上辺に垂直に袋の下辺に向けて先端の溶着幅を残してスリット加工して流出通路部が長方形として残されている様に形成させたものであり、手のひらで容易に流出通路部の全体を握ることができ中空定量部の中の液体を容易に全量を弱い力で、目的方向に放出させることができる。スリット加工した流出通路部は、本発明の第５発明である。
【００２９】
１０．自立構造
本発明において自立（スタンディング）構造とは、袋の下部に袋が自立できる構造体を付加したもので、商品として陳列したり、使用するとき倒れないので便利である。本発明の１形態である袋を逆さに吊下げて使用する場合は、自立構造は、必ずしも必要ではない。自立構造袋（スタンディングパウチ）については、本発明の出願人が先に出願し公開された特開２０００−２５７８５号公報に詳細に説明してあるが、自立構造はこれに限定されるものではなく、他の自立構造であってもよい。自立構造の付加は、本発明の第６発明である。
【００３０】
１１．定量注出させる方法
本発明において定量注出させる方法とは、本発明の流体包装袋に流体を充填し、袋の上部を下に、下部を上にし、袋を逆様につりさげるための貫通穴又は取手で袋を吊下げ、隅角部を切って流出通路の先端を開放し、中空定量部を手で圧搾又はしごきにより中空定量部内の流体を必要時のみ定量注出させる方法であり、本発明の流体包装袋の使用方法の１形態であり図４の（Ａ）及び（Ｂ）に示した。図４の（Ａ）は、流体の自重程度による流出通路への圧力では、液体は流出しないことを示しめしており、図４の（Ｂ）は、指で押す程度の弱い圧力でも、中空定量部の容積が小さいので単位面積あたりの圧力は、従来の包装体の大容量の胴体部を手で押す場合より、はるかに大きな圧力となり、中空定量部の流体を容易に押出せることを示している。本発明の流体包装袋は、自立性のものや、自立性がないものもあるが、いずれのものも、従来から使用されている公知方法、例えば床面に自立させたり、ねかしたり、ラックに斜めに収納してもよい。なお、図４は、線状凸部がないという点で、本発明の範囲外である。
【００３１】
１２．流体包装袋の製造方法
本発明の流出通路の基端部に中空定量部を設けたことを特徴とする流体包装袋は、本願出願人が先に出願し特許となった特許第２５２８６１１号公報に開示されている成形装置と成形方法を転用することによって製造することができる。但し、特許第２５２８６１１号公報は、自己閉鎖性流出通路付きの流体包装袋の成形方法と成形装置に関するものであるから、本発明のように、中空定量部および線状凸部を形成できるようになっていない。したがって、特許第２５２８６１１号公報に記載の金型の模様は、自己閉鎖性流出通路のみを形成できる模様しか彫ってないので、流出通路の基端部に中空定量部が設けられるよう金型に模様を付加する必要がある。また、線状凸部をオプションとして付加する場合は、それを形成できる模様を金型に追加して彫る必要がある。（それらの模様を付加した金型を、以降改造金型と呼称することもある。）
本発明の流体包装袋の製造方法は、上記した改造特許第２５２８６１１号公報に記載の金型の改造金型と成形装置を使用し、同公報の成形方法に準じて製造できる。概要を以下に示すが、これに限定されるものではない。
まず、袋の素材となる前記した単層または積層フィルムを準備する。この単層または積層フィルムは、通常長い帯状であり、ロール巻きとなっている。
次いで、長い帯状の積層フィルムを巻き取った上側の芯軸（ロール巻き）と下側の芯軸（ロール巻き）からそれぞれ帯状の積層フィルムを繰り出し、上下に重合した両積層フィルムを上下に隔離する一対の案内ローラで隔離し、次いで上下に重合して前方へ水平に間欠的に送るフィルム供給装置により前方に送り、次いで上下に隔離した両積層フィルムの内側位置と外側位置に、それぞれ、改造雄形成形金型と改造雌形成形金型を対面して設け、両積層フィルムの供給停止毎に、改造雌形成形金型がそれぞれ改造雄形成形金型側に移動し、上側と下側の両積層フィルムの中空定量部を有する流出通路形成部分が、それぞれ、改造雄形成形型の凸部と改造雌形成形型の凹部で挟まれて成形され、外面側に所定量だけ膨張して突出する。（この突出した両積層フィルムを以降、金型加工両積層フィルムと呼称する。）
【００３２】
両積層フィルムが雄形と雌形の型成形で成形し難い場合は、改造雄形成形金型に内蔵の電熱式加熱装置と改造雌形成形金型に内蔵の電熱式加熱装置の片方又は両方を作動して改造雄形成形金型と改造雌形成形型の片方又は両方を１２０〜２２０℃位に加熱しておき、両積層フィルムの流出通路形成部分を、改造雄形成形金型と改造雌形成形金型の片方又は両方で加熱しつつ、改造雄形成形金型と改造雌形成形金型で挟んで成形してもよい。即ち、熱圧成形する。
両積層フィルムが熱圧成形で成形し難い場合は、高圧空気を改造雄形成形金型の空気供給通路に供給して改造雄形成形金型の凸部の開口から噴出させ、両積層フィルムの中空定量部を有する流出通路形成部分を、改造雄形成形金型の凸部面から吹き出す１〜６ｋｇｆ／ｃｍ２の高圧空気で改造雌形成形金型の凹部に押し付けつつ、改造雄形成形金型と改造雌形成形金型で挟んで成形してもよい。即ち、圧空成形する。この際、熱圧成形を併用してもよいし、又は、併用しなくてもよい。両積層フィルムが更に成形し難い場合は、空気吸引装置を作動して空気排出通路を経て改造雌形成形金型の凹部の空気を１〜６ｋｇｆ／ｃｍ２の圧力で排出し、両積層フィルムの中空定量部を有する流出通路形成部分を、減圧される改造雌形成形金型の凹部に吸引しつつ、改造雄形成形金型と改造雌形成形金型で挟んで成形してもよい。即ち、減圧成形する。この際、圧空成形又は熱圧成形を併用してもよいし、又は、併用しなくてもよい。要するに、両積層フィルムは、その成形性に応じて、型成形と、熱圧成形、圧空成形又は減圧成形を適宜組み合わせて成形する。すると、厚さが数１０〜３００μｍ位の両積層フィルムが所定の通りに成形され金型加工両積層フィルムが得られる。
次いで、金型加工両積層フィルムの供給通路に沿って、金型加工両積層フィルムの供給停止毎に、上下の金型加工両積層フィルムの袋の上左側部分となる部分を中空定量部を有する流出通路となる部分を除いて溶着するシール装置で溶着し、その溶着部を冷却する装置で冷却し、金型加工両積層フィルムの袋の下側部となる部分を溶着するシール装置で溶着し、その溶着部を冷却する装置で冷却し、金型加工両積層フィルムの袋の右側部となる部分を溶着するシール装置で溶着し、その溶着部を冷却する装置で冷却し、金型加工両積層フィルムの袋の左側部となる部分を溶着するシール装置で溶着し、その溶着部を冷却する装置で冷却し、金型加工両積層フィルムの袋部分と隣の袋部分の間を切断するカッター装置で切断し、流出通路の基端部に中空定量部を有する流体包装袋が得られる。
なお、内容物の流体は、製袋工程の途中で袋に充填してもよいし、製袋後充填してもよい。なお、本発明で用いる金型の材料は、金属、セラミックス、エンジニアリングプラスチック、シリコーン系樹脂、光硬化樹脂等から適宜選択すればよく、雄型金型の材料が、雌型金型と異なっていてもよい。また、金型の表面の模様形成部分と、基部の材料が異なっていてもよい。例えば、雄型金型を鉄鋼で作り、雌型金型の基部を鉄鋼とし表面の模様形成部分をシリコーン樹脂としてもよい。このようにすれば、シリコーン樹脂製型は、迅速に安く作れるので、金型製作期間が短縮でき製品開発期間が短縮でき、金型製作費用も低減できるので製品コストが低減できる。
【００３３】
【実施例】
以下、実施例により更に本発明を説明するが、本発明の主旨を超えない限り、それらに限定されるものではない。
【００３４】
実施例１
ナイロン６を水冷インフレーション法によりチュブラーフィルムにした。このフィルムを使用して、同時二軸延伸を行い、二軸延伸ナイロン６フイルムを得た。延伸倍率はＭＤ方向３．０、ＴＤ方向３．２であり、フィルムの厚さは３０μｍであった。この二軸延伸ナイロン６フイルム１枚を直鎖状低密度エチレン−ヘキセン−１共重合体フィルム（メルトインデックス＝２．０、密度＝０．９２３ｇ／ｃｍ３）を、ポリウレタン系接着剤（商品名：アドコートＡＤ３０８Ａ／Ｂ、東洋モートン製）をアンカーコート剤として使用し、ドライラミネーション法により積層して、合計厚さが８０μｍである積層フィルムを得た。次いで、図３の（Ａ）に示す屈曲形状と直径１ｃｍの球状の中空定量部を作るための模様（半球状で中が空胴となっているお椀形）を彫った改造雌形成形金型と、改造雄形成形金型を準備し、金型温度を１８０℃位に加熱しておき、熱圧成形した。次いで、金型加工両積層フィルムを、袋の上左側部分となる部分を中空定量部を有する流出通路となる部分を除いて溶着するシール装置で溶着し、その溶着部を冷却する装置で冷却し、次いで金型加工両積層フィルムの袋の下側部となる部分、袋の右側部となる部分、袋の左側部となる部分等を溶着し、金型加工両積層フィルムの袋部分と隣の袋部分の間を切断するカッター装置で切断し、流出通路の基端部に直経１ｃｍの球状の中空軽量部を有する、図３の（Ａ）に示す流体包装袋がえられる。この袋は、幅は１２ｃｍで、長さは２１ｃｍである。この袋に、内容物の流体として、シャンプー液を充填し、充填口を熱溶着し右下のコーナーの熱溶着部に直径７ｍｍの穴を開け紐を吊した。風呂場で、このシャンプー入り包装体を逆さに吊し、流出通路の出口を鋏で切断し、中空定量部を握り、目をつむったままシャンプーを片手で流出させ、一方の手の、手のひらで受け取ることができ、次いで流出通路をしごき、袋から手をはなすと、シャンプーの流出は自然に停止し、漏れることはなかった。なお、図３は、線状凸部がないという点で、本発明の範囲外である。
【００３５】
実施例２
ナイロン６を水冷インフレーション法によりチュブラーフィルムにした。このフィルムを使用して、同時二軸延伸を行い、二軸延伸ナイロン６フイルムを得た。延伸倍率はＭＤ方向３．０、ＴＤ方向３．２であり、フィルムの厚さは２０μｍであった。この二軸延伸ナイロン６フイルムと、エチレン−ビニルアルコール共重合体、及びメタロセン触媒による直鎖状低密度エチレン−オクテン−１共重合体（メルトインデックス＝２．５、密度＝０．９２５ｇ／ｃｍ３）を、アイオノマーを接着層として、共押出し積層して、合計厚さが１００μｍであるＯＰＡ／アイオノマー接着剤／ＥＶＯＨ／アイオノマー接着剤／ＭＣＡＴ−ＰＥ積層フィルムを得た。
次いで、図５の（Ａ）に示す線状凸部（幅５ｍｍ、高さ３ｍｍ、長さ５ｃｍ）、屈曲形状及び直径１ｃｍの球状の中空定量部を作るための模様（半球状で中が空胴となっているお椀形）を彫った改造雌形成形金型と、改造雄形成形金型を準備し、金型温度を２００℃位に加熱しておき、熱圧成形した。次いで、金型加工両積層フィルムを、袋の上左側部分となる部分を中空定量部を有する流出通路となる部分を除いて溶着するシール装置で溶着し、その溶着部を冷却する装置で冷却し、次いで金型加工両積層フィルムの袋の下側部となる部分、袋の右側部となる部分、袋の左側部となる部分等を溶着し、金型加工両積層フィルムの袋部分と隣の袋部分の間を切断するカッター装置で切断し、流出通路の基端部に直径１ｃｍの球状の中空定量部を有する、図５の（Ａ）に示す流体包装袋がえられる。この袋は、幅は１５ｃｍで、長さは３０ｃｍである。
この袋に、内容物の流体として、サラダドレッシングを充填し、充填口を熱溶着し右下のコーナーの熱溶着部に直径７ｍｍの穴を開け紐を吊した。ホテルの大型厨房において、このサラダドレッシング入り包装体を逆さに吊し、流出通路の出口を鋏で切断し、中空定量部を握り、サラダドレッシングを片手で流出させ、サラダにかけ、中空定量部から手を離せばサラダドレッシングの流出は自然に停止するので、料理人はすぐ他の調理の作業に移れるので手間が省け厨房作業の合理化に寄与した。
【００３６】
比較例１
実施例１（参考例）において、中空定量部を設置しなかった以外は、実施例１（参考例）と同様な袋を作った。この袋に、内容物の流体として、シャンプー液を充填し、充填口を熱溶着し右下のコーナーの熱溶着部に直径７ｍｍの穴を開け紐を吊した。風呂場で、このシャンプー入り包装体を逆さに吊し、流出通路の出口を鋏で切断し、袋の胴部を握り、目をつむったままシャンプーを片手で流出させ、一方の手の、手のひらでシャンプー受け取ろうとしたが、片手ではなかなか力が加えられなく、シャンプーをだすのに苦労した。両手で袋を掴み、頭の上に持ってゆき、袋を強い力で絞るとシャンプーは、飛び出して出てきたが、量が必要以上に出てきたし、飛び出す方向のコントロールが困難であり、操作が不便で、シャンプーのロスが発生した。
【００３７】
比較例２
実施例２において、線状凸部と中空定量部を設置しなかった以外は、実施例２と同様な袋を作った。
この袋に、内容物の流体として、サラダドレッシングを充填し、充填口を熱溶着し右下のコーナーの熱溶着部に直径７ｍｍの穴を開け紐を吊した。
ホテルの大型厨房において、このサラダドレッシング入り包装体を逆さに吊し、流出通路の出口を鋏で切断し、袋の胴部を握り、サラダドレッシングを片手で流出させ、一方の手にサラダが盛りつけられている皿に持って、サラダの上にサラダドレッシングをかけようとしたが、片手ではなかなか力が加えられなく、サラダドレッシングを出すのに苦労した。両手で袋を掴み、皿を調理台の上に置き、袋を強い力で絞るとサラダドレッシングは、飛び出して出てきたが、量が必要以上に出てきたし、飛び出す方向のコントロールが困難であり、操作が不便で、サラダドレッシングのロスが発生した。
【００３８】
【発明の効果】
本発明の自己閉鎖性流出通路付き流体包装体は、片手で握ったり、しごいたりする程度の簡単な操作で、また親指と人差指で摘む程度の弱い力で、内容物を一定量ほど注出でき、注出方向も任意の方向に容易に定めることができ、かつ単に袋を逆様に吊下げているとき、又は横に寝かせているとき内容物は流出することがないので、キャップをその都度しめる手間が省略でき、取扱性、作業性にすぐれ、省資源的な流体包装体を提供できる効果がある。
【図面の簡単な説明】
【図１】 従来の自己閉鎖性流出通路付き流体包装体の１例を示す正面図である。
【図２】 自己閉鎖性流出通路付き流体包装体を開封し、液体を放出する工程を示す説明図である。
【図３】 中空定量部付き自己閉鎖性流出通路付き流体包装体の平面図（Ａ）である。断面図（Ｂ）は、流出通路を形成するフィルム同士が密着している例であり、断面図（Ｃ）は、流出通路を形成するフィルムが外部に膨張している例である。
【図４】 中空定量部付き自己閉鎖性流出通路付き流体包装体を逆さに吊下げて使用する平面図（Ａ）と、親指で液体を押出している状態を示す平面図（Ｂ）である。
【図５】 本発明の単数の線状凸部と中空定量部を有する自己閉鎖性流出通路付き流体包装体の平面図である。
【図６】 本発明の副数の線状凸部と、中空定量部を有する自己閉鎖性流出通路付き流体包装体の平面図である。
【図７】 本発明の中空定量部を有する自己閉鎖性流出通路付き流体包装体の中空定量部の平面図である。
【図８】 本発明の中空定量部を有する自己閉鎖性流出通路付き流体包装体の中空定量部を、スリット又は型抜き加工した平面図である。
【図９】 本発明の中空定量部を有する自己閉鎖性流出通路付き流体包装体の自己閉鎖性流出通路の各種平面図である。
【図１０】 本発明の中空定量部を有する自己閉鎖性流出通路付き流体包装体の自己閉鎖性流出通路の各種平面図である。
【図１１】 本発明の中空定量部を有する自己閉鎖性流出通路付き流体包装体の自己閉鎖性流出通路の各種平面図である。
【符号の説明】
１ フィルム
２ 上辺溶着部
３ 液体充填口
４ 流出通路
５ 閉鎖先端（出口）
６ 隅角部
７ 基端（入口）
８ 袋胴部
９ 袋周辺溶着部 [0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fluid packaging bag, and more specifically, a certain amount of contents can be dispensed with a simple operation such as grasping with one hand or squeezing, and with a weak force such as grasping with a thumb and index finger. Further, the present invention relates to a fluid packaging body with a self-closing outflow passage that has a structure that does not flow out even when the bag is suspended in the opposite direction or laid sideways.
[0002]
[Prior art]
Traditionally, liquid seasonings such as mayonnaise, coffee, juice, shampoo, rinse, body soap, beverages, laundry and kitchen detergents have been sold and used in plastic bottles and bags. . The bottled bottle has a high-class feeling and is self-supporting, so it is easy to display at the store, and even during use, the desired amount can be poured out by removing the cap, and it can be stored without leaking, but the cost is low. There are problems such as high cost, generation of dead space during distribution, storage and disposal, and waste of resources.
[0003]
In order to solve this, a single layer or multilayer film of polyethylene, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, polyamide, polyester, etc. is polymerized, and the periphery is welded to form the bottom structure. A standing pouch with a cap that has the same structure as the bottle at the top is easy to cost, is not bulky, is resource-saving, and is used to replace part of the bottle demand. It is coming.
As one of them, two rectangular plastic films developed and commercialized by the present applicant are polymerized, their periphery is welded to form a bag for containing fluid, and the upper welded part is not welded There is a fluid packaging bag with an outflow passage formed by communicating the base end of the outflow passage with a base end thereof in the bag and disposing the closed tip at a corner portion. This has a structure as shown in FIG. 1, and as can be seen from its shape, after filling the fluid, the upper corner is cut to open the tip of the outflow passage, and the fluid in the bag is grasped by grasping the bag. When the pressure is pressed, the fluid flows out from the outflow passage.On the other hand, when the force for gripping the bag is weakened, the outflow of the fluid stops, and when the fluid remaining in the outflow passage is squeezed out, the bag is placed at an arbitrary position. This is a fluid packaging bag with a self-closing outflow passage in which the fluid does not flow out of the outflow passage unless the fluid in the bag is compressed. When using this product, the contents flow out by pressing the bag according to the operation and process shown in FIG. 2, and the flow stops when the pressing is stopped. In recent years, the bottles have been used in large quantities because they do not cause the contents to flow out due to overturning and do not pollute the surroundings and cause loss of the contents.
[0004]
However, a standing pouch with a self-closing outflow passage is rarely used as it is, and is used for refilling bottles. For example, products that are hung in the opposite direction in bathrooms have appeared. In such products, the pouches (bags) are hung in the opposite direction, so handling is poor, especially because they are gripped and the contents are difficult to come out due to bending, or the stability of the dispensing direction The problem was that it was very difficult to pour out the contents because it was bad, or the contents jumped out more than necessary and the discharge amount (usage amount) was not constant if too much force was applied. .
One way to solve these problems is to increase the width of the outflow passage, reduce the bends, and increase the clearance between the films in order to hold the bag with a weak force and pour out the contents. Although it is possible, the resistance to the liquid flow is weak, so if the bag is suspended in reverse, the liquid will flow out through the outflow passage with the pressure of the liquid's own weight. The initial goal cannot be achieved.
[0005]
[Problems to be solved by the invention]
In view of the above-mentioned problems, the present invention can dispense a certain amount of contents with a simple operation that allows a person to hold or squeeze with one hand, and with a weak force that can be grasped with the thumb and index finger. Moreover, it is an object of the present invention to provide a fluid packaging body with a self-closing outflow passage that has a structure that does not flow out even when the bag is suspended in the opposite direction or laid down sideways. .
[0006]
[Means for Solving the Invention]
As a result of intensive research to solve the above-mentioned problems, the present inventors polymerized two rectangular plastic films, welded the periphery thereof, formed a bag for containing fluid, and in the upper welded part, In the fluid packaging bag with a self-closing outflow passage formed by communicating the base end of the outflow passage in the non-welded portion with the inside of the bag and arranging the closed end at the corner, the base end side (inlet side) of the outflow passage It is found that a desired result can be obtained by providing a hollow quantitation part), and that a better result can be obtained by providing a linear convex part in addition to the installation of the hollow quantification part. It came to complete.
[0007]
That is, according to the first invention of the present invention, two rectangular plastic films are polymerized, the periphery thereof is welded to form a bag into which a fluid is put, and the upper welded portion has an outflow passage for the non-welded portion. In a fluid packaging bag with an outflow passage formed by communicating its base end in the bag and disposing its closed tip at the corner, the shape is spherical, elliptical spherical, heavy cone on the base end side of the outflow passage. Trapezoid,OrOne of the three-sided pyramid trapezoids, with a volume of 110cm3A hollow quantitative unit is provided.And at least one linear protrusion is provided so as to straddle the base end of the outflow passage,In addition, a fluid packaging bag is provided in which a portion of the outflow passage excluding the hollow fixed portion has a bent shape that causes resistance to inflow and passage of liquid.
[0011]
Furthermore, the present invention2According to the invention, in the first invention, when the two plastic films having a rectangular shape are polymerized and the periphery thereof is welded to form a bag for containing the fluid, the bag is filled with the fluid in a part of the periphery. There is provided a fluid packaging bag provided with an opening for a non-welded portion.
[0012]
Furthermore, the present invention3According to the invention, the firstOr 2According to the present invention, there is provided a fluid packaging bag characterized in that a through hole or a handle for suspending the bag is provided in a part of the welded portion at the lower part of the bag.
[0013]
Furthermore, the present invention4According to the invention, first to first3In any one of the inventions, the welded portion surrounding the non-welded portion forming the outflow passage is left with a width that does not rupture even when internal pressure is applied to the outflow passage and that has a shape similar to the outflow passage. There is provided a fluid packaging bag characterized by being die-cut as it is.
[0014]
Furthermore, the present invention5According to the invention, first to first4In any one of the inventions, the welded portion surrounding the periphery of the non-welded portion forming the outflow passage is perpendicular to the upper side starting from a position at the upper side of the bag where the outflow passage can be left from the corner. In addition, a fluid packaging bag is provided which is slit-processed while leaving the welding width at the tip toward the lower side of the bag.
[0015]
Furthermore, the present invention6According to the invention, first to first5In any one of the inventions, a fluid packaging bag is provided in which the lower portion of the bag has a self-supporting structure.
[0016]
Furthermore, the present invention7According to the invention, first to first6In any of the inventions, the fluid packaging bag is filled with fluid, the bag is suspended with a through-hole or handle for suspending the bag in the opposite direction, with the top of the bag facing down and the bottom facing up. And the tip of the outflow passage is opened, and a method is provided in which the fluid in the hollow quantitative portion is dispensed only when necessary by manually squeezing or ironing the hollow quantitative portion.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is described in detail below.
[0018]
1. Plastic film
The plastic film used to make the fluid packaging bag of the present invention is a high pressure method low density polyethylene (HP-LDPE), linear low density polyethylene (LLDPE), linear very low density polyethylene (VLDPE), metallocene catalyst. Polyethylene (MCAT-PE) byHigh densityPolyethylene (HDPE), ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA), ethylene-acrylic acid copolymer (EAA), ionomer (IONOMER), ethylene-vinyl alcohol copolymer A single layer film such as (EVOH), polyamide (PA), polyester (PET), polycarbonate (PC), polypropylene (PP), aluminum (AL), or a multilayer film of a resin selected from them is used. A single layer film or a multilayer film of a resin selected from them may be stretched. In particular, laminated films using biaxially stretched polyamide film (OPA), biaxially stretched polyester film (OPET), biaxially stretched polypropylene (OPP), etc. are tear strength, puncture resistance, tensile strength, flexibility, transparency. It is excellent in properties such as heat resistance, cold resistance, burst resistance, low water vapor permeability, low oxygen permeability and the like. The following structures are mentioned as a typical example of a laminated film.
[0019]
・ OPA / Polyurethane adhesive / OPA / Polyurethane adhesive / LLDPE
・ OPA / ionomer adhesive / OPA / ionomer adhesive / HP-LDPE
・ OPA / Polyurethane adhesive / LLDPE
・ OPA / ionomer adhesive / HP-LDPE
・ OPA / ionomer adhesive / AL foil / ionomer adhesive / MCAT-PE
・ Silica vapor deposition OPA / Polyurethane adhesive / LLDPE
・ OPA / Ionomer Adhesive / OPP / Ionomer Adhesive / EVA
・ Alumina-deposited OPA / ionomer adhesive / MCAT-PE
・ OPET / Polyurethane Adhesive / OPET / Polyurethane Adhesive / LLDPE
・ OPET / Ionomer Adhesive / OPET / Ionomer Adhesive / EEA
・ OPET / Polyurethane Adhesive / LLDPE
・ OPET / Ionomer Adhesive / HP-LDPE
・ OPET / Ionomer Adhesive / AL foil / Ionomer Adhesive / MCAT-PE
・ Silica Vaporized OPET / Polyurethane Adhesive / LLDPE
・ OPET / Ionomer Adhesive / OPP / Ionomer Adhesive / EVA
・ Alumina-deposited OPET / ionomer adhesive / MCAT-PE
・ OPET / Polyurethane adhesive / EVOH / Polyurethane adhesive / LLDPE
・ OPET / Ionomer Adhesive / EVOH / Ionomer Adhesive / MCAT-PE
・ LLDPE / Polyurethane adhesive / EVOH / Polyurethane adhesive / MCAT-PE
・ MCAT-PE / Ionomer Adhesive / EVOH / Ionomer Adhesive / MCAT-PE
In the case of a single-layer film, the thickness is about 30 to 100 μm, and in the case of a laminated film, the thickness of each layer constituting is about 5 to 80 μm, and the total thickness is preferably about several tens to 150 μm.
[0020]
2. liquid
In the present invention, the liquid is the content contained in the package of the present invention, and mayonnaise, coffee, milk, juice, shampoo, rinse, body soap, liquid detergent for laundry and kitchen, natural water, mineral water, refreshment Beverages, miso, liquid soup, soy sauce, chili oil, soba soup, udon soup, tempura soup, jam, amazake, sake, whiskey, wine, shochu, solvents, chemicals, gels, etc., from low to high Can be packaged up to.
[0021]
3. Outflow passage
In the present invention, the outflow passage means that when the bag is gripped and the fluid in the bag is compressed, the fluid flows out of the outflow passage, and when the force for gripping the bag is weakened, the outflow of the fluid stops and then remains in the outflow passage. When the fluid is squeezed out, it is a liquid self-closing outflow passage that has the function of preventing fluid from flowing out of the outflow passage unless the fluid in the bag is compressed even if the bag is placed at an arbitrary position. Therefore, after the contents fluid has flowed out of the bag, the contents fluid will not flow out even if the bag is tilted down or the bag is suspended with the outlet passage facing down. As in the case, after use, the trouble of closing the cap each time can be saved, which increases the efficiency and is convenient.
The shape of the self-closing outflow passage may be, for example, S, C, V, L, N, M, W, K, H, T, H, H, H, H, 2, 3, 7, etc. It is a modification of them, and it is necessary to have a bent portion that creates resistance against the flow of the liquid in the middle of the outlet passage from the inlet to the outlet instead of being linear.
Although these specific examples were shown in FIGS. 9-11, it is not limited to these.
In order to generate a large resistance, the width of the outflow passage may be narrowed and the bent portions may be formed in multiple places. To generate a small resistance, the width of the outflow passage may be increased and the bent portion should be provided in one place. Good.
The width of the outflow passage varies depending on the capacity and dimensions of the bag, but is preferably about 2 to 20 mm.
In addition, since the outflow passage is formed between two plastic films, it is usually designed so that the films are in close contact with each other when fluid does not pass through. It can also be made to expand and protrude by a predetermined amount to the side. Protruding has the effect of reducing resistance to the flow of the liquid, but if the amount of protrusion is too large, after the fluid of the contents has flowed out of the bag, the bag is tilted or the outlet of the outflow passage is opened. When the bag is suspended downward, the contents flow out from the outlet of the outflow passage even if the contents in the bag are not pressed, so care must be taken.
[0022]
4). Hollow quantitative section
In the present invention, the hollow quantitative portion has a spherical shape, an elliptic sphere shape, a heavy frustum shape, a heavy elliptic frustum shape, a heavy trigonal frustum shape, a heavy quadrangular frustum shape, and the like, and has a hollow shape, and the proximal end of the outflow passage It is provided on the side (entrance side). Examples thereof are shown in FIGS. 7A, 7B, and 7C. 7A shows a heavy elliptic frustum, FIG. 7B shows a heavy quadrilateral frustum, and FIG. 7C shows a heavy trigonal frustum.
The volume of the hollow quantitative part is 1 to10cm3, Preferably 5-10cm3Since it can be applied with a thumb and forefinger to apply pressure, squeeze, or grip with the palm of your hand, it can be applied with less pressure compared to applying pressure to the entire bag as in the past. It is easy to supply contents. In addition, when pressure is applied to the entire bag, a considerable amount comes out once the discharge is started, and it is difficult to quantitatively determine the amount, and the discharge direction is not fixed, which is inconvenient. When there is a hollow quantification unit, since a certain amount of fluid flows in, the labor for quantifying the fluid each time can be saved, and work rationalization can be achieved.
In addition, the volume of the hollow quantitative part is a small volume of about 1/10 to 1/20 compared to the capacity of the entire bag, so even without applying a large pressure as in the case of applying pressure to the entire bag, The pressure per unit area is enough to allow the contents to flow out enough to apply pressure with the thumb and forefinger, pick it up, tighten it, or grip it with your palm. Since the pressure work can be controlled easily and accurately, the discharge amount (use amount) and the discharge direction can be accurately determined.
[0023]
For example, when using shampoo in a bathroom, you can hang this shampoo package upside down, hold the hollow metering part, let your eyes spill out with one hand, and receive it with the palm of one hand If the hand is then released from the hollow quantification section, the shampoo outflow stops naturally and is convenient. As another example, in a large kitchen such as a hotel, when salad dressing is frequently used, the package containing salad dressing is hung upside down in the hollow, the hollow quantitative portion is held, the salad dressing is drained with one hand, and the salad On the other hand, if the hand is taken away from the hollow quantification part, the outflow of the salad dressing will stop naturally, so the cook can immediately move on to other cooking work, saving time and effort. As another example, when cleaning the floor of a large building with a detergent solution or polishing with a wax emulsion solution, it is filled in the package of the present invention, hung upside down on a part of a cleaning car, Hold the part, let the detergent solution or wax emulsion solution flow out only with one hand, spray it on the floor, and release the hollow metering part, the detergent solution and wax emulsion solution will stop flowing out naturally, so cleaning and polishing Work is very easy and labor saving is possible.
The addition of the hollow quantitative part is the first invention of the present invention and is the most important part of the present invention.
[0024]
5. Linear convex part
As shown in FIGS. 5A and 5B, the linear convex portion in the present invention has a width of about 2 to 15 mm, a height of about 1 to 5 mm, and a length of about 1 to 10 cm. It protrudes outward from the surface of the bag and is hollow inside. When viewed from the inside of the bag, it has a groove shape. The installation position of the linear convex portion is set so that the starting point is inside the bag, straddles the base end (inlet) of the outflow passage, the end point is inside the hollow quantitative portion, and the linear convex portion is approximately parallel to the longitudinal direction of the bag. It has become. Since the linear convex portion is a groove when viewed from the inside of the bag, the solution in the bag is easy to flow into the groove and has an effect of being immediately placed at the tip of the groove, that is, the hollow quantitative portion. In particular, even when the solution inside the bag is reduced, it is possible to promptly send the liquid to the hollow quantitative unit. The linear convex portion may be a single or plural, and may be, for example, Y, T, U, H, L, X, V, N-shape or a deformed shape thereof by combining the linear convex portions. Good. Although the specific example was shown in FIG. 6, it is not limited to this.
[0025]
6). Aperture
In the present invention, the opening is provided in the upper right part (3) of FIG. 1 and is an opening for filling a bag with liquid.AhThus, after filling the liquid, it is heat-sealed to become a welded portion. The addition of the opening is the first of the present invention.2It is an invention.
[0026]
7). Through hole or handle
In the present invention, the through hole or the handle is provided in the upper left part of FIG. 3 or FIG. 4 and is used for hanging the bag upside down. Although the bag of the present invention can be used in any position and direction, it is specifically designed in consideration of the case where the bag is suspended upside down.3 or 4 is out of the scope of the present invention in that there is no linear protrusion.It is.
[0027]
8). Outflow passage section formed by die cutting and deleted
In the present invention, the outflow passage portion formed by die-cutting and deleting is a shape as shown in FIG. 8B, and is a weld surrounding the periphery to form the outflow passage of the non-welded portion. The part has a width that can form an outflow passage and does not rupture even when internal pressure is applied to the outflow passage, and is formed by removing the die by leaving a width that is similar to the outflow passage. Thus, the entire outflow passage portion can be easily grasped with the palm of the hand, and the entire amount of the liquid in the hollow metering portion can be easily discharged in the target direction with a weak force. The addition of the outflow passage portion formed by die cutting and deletion is the first feature of the present invention.4It is an invention.
[0028]
9. Slit processed outflow passage
In the present invention, the slitted outflow passage portion has a shape as shown in FIG. 8A, and the welded portion surrounding the periphery in order to form the outflow passage of the non-welded portion is the position of the upper side of the bag. However, starting from the position where the outflow passage can be left from the corner, the slit is processed to leave the welding width of the tip toward the lower side of the bag perpendicular to the upper side, and the outflow passage is left as a rectangle. The entire outflow passage portion can be easily grasped with the palm of the hand, and the entire amount of the liquid in the hollow metering portion can be easily discharged in the target direction with a weak force. The slit outflow passage portion is the first of the present invention.5It is an invention.
[0029]
10. Self-supporting structure
In the present invention, the self-standing structure is a structure in which a structure capable of self-supporting a bag is added to the bottom of the bag, and is convenient because it does not fall down when displayed as a product or used. When using the bag which is 1 form of this invention hanging upside down, a self-supporting structure is not necessarily required. The self-supporting structure bag (standing pouch) is described in detail in Japanese Patent Application Laid-Open No. 2000-25785 filed and published by the applicant of the present invention, but the self-supporting structure is not limited thereto. Other self-supporting structures may be used. The addition of a self-supporting structure is the first of the present invention.6It is an invention.
[0030]
11. Method of dispensing a fixed amount
In the present invention, the method of quantitative dispensing means that the fluid packaging bag of the present invention is filled with fluid, and the bag is opened with a through hole or handle for suspending the bag in the opposite direction, with the upper part facing down and the lower part facing up. , Cut the corner, open the tip of the outflow passage, and manually squeeze or squeeze the hollow quantification part by hand to quantitate and dispense the fluid in the hollow quantification part only when necessary. This is one form of usage of the bag and is shown in FIGS. 4 (A) and 4 (B). FIG. 4A shows that the liquid does not flow out by the pressure to the outflow passage due to the fluid's own weight, and FIG. 4B shows the hollow quantification even with a weak pressure that can be pushed by a finger. Since the volume of the part is small, the pressure per unit area is much larger than when pressing the large-capacity body part of a conventional package by hand, indicating that the fluid in the hollow quantitative part can be easily extruded. Yes. The fluid packaging bag of the present invention may be self-supporting or non-supporting, but any of them may be a well-known method that has been used conventionally, for example, self-supporting on the floor surface, neglecting, You may store diagonally.Note that FIG. 4 is outside the scope of the present invention in that there are no linear protrusions.It is.
[0031]
12 Method for manufacturing fluid packaging bag
A fluid packaging bag characterized in that a hollow metering portion is provided at the base end portion of the outflow passage of the present invention is a molding device disclosed in Japanese Patent No. 2528611 which was filed and patented by the applicant of the present application. And can be produced by diverting the molding method. However, since Japanese Patent No. 2528611 relates to a molding method and a molding apparatus for a fluid packaging bag with a self-closing outflow passage, the hollow fixed portion and the linear convex portion can be formed as in the present invention. is not. Therefore, since the pattern of the mold described in Japanese Patent No. 2528611 is only carved so that only the self-closing outflow passage can be formed, the pattern on the mold is provided so that a hollow quantitative portion is provided at the base end portion of the outflow passage. It is necessary to add. Moreover, when adding a linear convex part as an option, it is necessary to add and carve the pattern which can form it in a metal mold | die. (The mold to which these patterns are added may be hereinafter referred to as a modified mold.)
The manufacturing method of the fluid packaging bag of the present invention can be manufactured in accordance with the molding method described in the publication using the modified mold and molding apparatus described in the above-mentioned modified patent No. 2528611. The outline is shown below, but is not limited thereto.
First, the above-described single layer or laminated film as a bag material is prepared. This single layer or laminated film is usually in the form of a long band and is rolled.
Next, the belt-like laminated film is fed out from the upper core shaft (roll winding) and the lower core shaft (roll winding) around which the long belt-like laminated film is wound up, and the two laminated films polymerized vertically are separated vertically. Separated by a pair of guide rollers, then fed vertically by a film feeder that feeds horizontally and intermittently forwards forward, and then at the inner and outer positions of both laminated films separated vertically The forming mold and the modified female forming mold are provided facing each other, and each time the supply of both laminated films stops, the modified female forming mold moves to the modified male forming mold side, and the upper and lower The outflow passage forming part having the hollow fixed portion of both laminated films is formed by being sandwiched between the convex part of the modified male forming mold and the concave part of the modified female forming mold, and is expanded and protruded by a predetermined amount on the outer surface side. To do. (This projecting double laminated film is hereinafter referred to as a die-processed double laminated film.)
[0032]
If both laminated films are difficult to mold by male and female molds, one or both of the electric heating device built into the modified male mold and the electric heating device built into the modified female mold Is operated to heat one or both of the modified male forming mold and the modified female forming mold to about 120 to 220 ° C., and the outflow passage forming portion of both laminated films is remodeled with the modified male forming mold. While being heated with one or both of the female forming molds, the modified male forming mold and the modified female forming mold may be sandwiched and formed. That is, hot pressing is performed.
If it is difficult to form both laminated films by hot-press molding, supply high-pressure air to the air supply passage of the modified male mold and eject it from the opening of the convex part of the modified male mold. 1 to 6 kgf / cm for blowing out the outflow passage forming portion having the hollow fixed portion from the convex surface of the modified male forming mold2While being pressed against the recess of the modified female forming mold with the high pressure air, the modified male forming mold and the modified female forming mold may be sandwiched. That is, pressure forming is performed. At this time, hot pressing may be used together, or may not be used together. If it is difficult to form both laminated films, the air suction device is activated and the air in the recesses of the modified female forming mold is passed through the air discharge passage to 1 to 6 kgf / cm.2The modified male forming mold and the modified female forming mold are sucked into the recess of the modified female forming mold to be decompressed, and the outflow passage forming portion having the hollow fixed portion of both laminated films is discharged at the pressure of You may shape | mold between. That is, pressure reduction molding is performed. At this time, pressure forming or hot pressing may be used together, or may not be used together. In short, both laminated films are formed by appropriately combining mold forming and hot-pressure forming, pressure forming or reduced pressure forming according to the formability. Then, both laminated films having a thickness of several tens to 300 μm are molded as prescribed, and a die-worked both laminated films are obtained.
Next, each time the supply of the die-processed both laminated films is stopped along the supply path of the mold-processed both laminated films, the upper left portion of the upper and lower mold-processed laminated films is hollowed out.QuantitativeA sealing device that welds with a sealing device that welds except for a portion that becomes an outflow passage having a portion, cools the welding portion with a device that cools the welded portion, and welds a portion that becomes the lower portion of the bag of the die-processed laminated film And welded with a sealing device that welds the right part of the bag of the die-processed laminated film, and cooled with a device that cools the welded part. We weld with a sealing device that welds the left part of the bag of both mold-processed laminated films, cool it with a device that cools the welded part, and between the bag part of the mold-processed both laminated film and the adjacent bag part Cut with the cutter device to cut, hollow at the base end of the outflow passageQuantitativeA fluid packaging bag having a portion is obtained.
In addition, the fluid of the contents may be filled in the bag during the bag making process, or may be filled after the bag making. The material of the mold used in the present invention may be appropriately selected from metal, ceramics, engineering plastic, silicone resin, photo-curing resin, etc. The material of the male mold is different from that of the female mold. Also good. Moreover, the pattern formation part of the surface of a metal mold | die and the material of a base may differ. For example, the male mold may be made of steel, the base of the female mold may be steel, and the pattern forming portion on the surface may be made of silicone resin. In this way, since the silicone resin mold can be made quickly and cheaply, the mold production period can be shortened, the product development period can be shortened, and the mold production cost can be reduced, thereby reducing the product cost.
[0033]
【Example】
EXAMPLES Hereinafter, although an Example demonstrates this invention further, unless it exceeds the main point of this invention, it is not limited to them.
[0034]
Example 1
Nylon 6 was made into a tubler film by a water-cooled inflation method. Using this film, simultaneous biaxial stretching was performed to obtain a biaxially stretched nylon 6 film. The draw ratio was 3.0 in the MD direction and 3.2 in the TD direction, and the film thickness was 30 μm. One piece of this biaxially stretched nylon 6 film is a linear low density ethylene-hexene-1 copolymer film (melt index = 2.0, density = 0.923 g / cm).3) Was laminated by a dry lamination method using a polyurethane adhesive (trade name: ADCOAT AD308A / B, manufactured by Toyo Morton) as an anchor coating agent to obtain a laminated film having a total thickness of 80 μm. Next, a modified female forming mold carved with a bent shape shown in FIG. 3A and a pattern (hemispherical bowl-shaped bowl with a hollow inside) for making a spherical hollow quantitative portion having a diameter of 1 cm. Then, a modified male forming mold was prepared, the mold temperature was heated to about 180 ° C., and hot pressing was performed. Next, the mold-processed both laminated films are welded with a sealing device that welds the portion that becomes the upper left portion of the bag except the portion that becomes the outflow passage having the hollow fixed portion, and is cooled by the device that cools the welded portion. Next, the part that will be the lower side of the bag of the mold-processed double laminated film, the part that will be the right side of the bag, the part that will be the left side of the bag, etc. will be welded. A fluid packaging bag shown in FIG. 3A is obtained, which is cut by a cutter device that cuts between the bag portions, and has a spherical hollow lightweight part having a straight diameter of 1 cm at the base end part of the outflow passage. This bag is 12 cm wide and 21 cm long. This bag was filled with shampoo liquid as the content fluid, the filling port was heat-welded, a hole with a diameter of 7 mm was made in the heat-welded portion in the lower right corner, and a string was hung. In a bathroom, suspend the package containing shampoo upside down, cut the outlet of the outflow passage with scissors, grasp the hollow metering section, let the shampoo flow out with one hand while holding your eyes, and use the palm of one hand. When it was able to be received and then squeezed the spillway and released the hand from the bag, the shampoo spillage stopped spontaneously and did not leak.Note that FIG. 3 is outside the scope of the present invention in that there are no linear protrusions.It is.
[0035]
Example 2
Nylon 6 was made into a tubler film by a water-cooled inflation method. Using this film, simultaneous biaxial stretching was performed to obtain a biaxially stretched nylon 6 film. The draw ratio was 3.0 in the MD direction and 3.2 in the TD direction, and the film thickness was 20 μm. This biaxially stretched nylon 6 film, an ethylene-vinyl alcohol copolymer, and a linear low density ethylene-octene-1 copolymer (melt index = 2.5, density = 0.925 g / cm) by a metallocene catalyst3) Were co-extruded and laminated using an ionomer as an adhesive layer to obtain an OPA / ionomer adhesive / EVOH / ionomer adhesive / MCAT-PE laminated film having a total thickness of 100 μm.
Next, a pattern (hemispherical and empty inside) for forming a linear hollow portion (
This bag was filled with salad dressing as the content fluid, the filling port was heat-welded, a hole with a diameter of 7 mm was made in the heat-welded portion in the lower right corner, and a string was hung. In the large kitchen of the hotel, suspend the package with salad dressing upside down, cut the outlet of the outflow passage with scissors, grasp the hollow quantification section, drain the salad dressing with one hand, put it on the salad, and hand it from the hollow quantification section. Since the salad dressing spills out naturally when it is released, the cook can immediately move on to other cooking tasks, saving labor and contributing to streamlining the kitchen work.
[0036]
Comparative Example 1
Example 1(Reference example)In Example 1, except that the hollow quantification part was not installed.(Reference example)Made a similar bag. This bag was filled with shampoo liquid as the content fluid, the filling port was heat-welded, a hole with a diameter of 7 mm was made in the heat-welded portion in the lower right corner, and a string was hung. In a bathroom, hang this shampoo package upside down, cut the exit of the outflow passage with scissors, grasp the bag body, let the shampoo flow out with one hand while holding your eyes, and open the palm of one hand. I tried to receive the shampoo, but I couldn't get enough power with one hand and had a hard time getting out the shampoo. Grabbing the bag with both hands, holding it on the head, and squeezing the bag with a strong force, the shampoo popped out, but the amount came out more than necessary, and it was difficult to control the direction of popping out. Was inconvenient and shampoo loss occurred.
[0037]
Comparative Example 2
In Example 2, a bag similar to Example 2 was made except that the linear convex part and the hollow quantitative part were not installed.
This bag was filled with salad dressing as the content fluid, the filling port was heat-welded, a hole with a diameter of 7 mm was made in the heat-welded portion in the lower right corner, and a string was hung.
In the large kitchen of the hotel, this salad dressing package is hung upside down, the exit of the outflow passage is cut with scissors, the bag body is gripped, the salad dressing is spilled with one hand, and the salad is served in one hand I tried to put the salad dressing on top of the salad plate, but I couldn't get enough power with one hand and had a hard time putting out the salad dressing. Grabbing the bag with both hands, placing the dish on the cooking table, and squeezing the bag with a strong force, the salad dressing popped out, but the amount came out more than necessary, and it was difficult to control the direction of popping out The operation was inconvenient and a loss of salad dressing occurred.
[0038]
【The invention's effect】
The fluid packaging body with a self-closing outflow passage of the present invention dispenses a certain amount of contents with a simple operation that can be grasped with one hand or squeezed, and with a weak force that can be grasped with the thumb and index finger. The pouring direction can be easily determined in any direction, and the contents will not flow out when the bag is suspended in the opposite direction or laid down sideways. This eliminates the need for fixing each time, provides excellent handling and workability, and provides a resource-saving fluid package.
[Brief description of the drawings]
FIG. 1 is a front view showing an example of a conventional fluid packaging body with a self-closing outflow passage.Is.
FIG. 2 is an explanatory view showing a process of opening a fluid packaging body with a self-closing outflow passage and discharging a liquid.Is.
FIG. 3 is a plan view of a fluid packaging body with a self-closing outflow passage with a hollow quantitative portion (A).Is. Cross-sectional view (B) shows an example in which the films forming the outflow passage are in close contact with each otherAndCross-sectional view (C) shows an example in which the film forming the outflow passage is expanded outsideIs.
FIG. 4 is a plan view (A) in which a fluid packaging body with a self-closing outflow passage with a hollow fixed portion is suspended upside down and a plan view showing a state in which liquid is pushed out with a thumb (B).Is.
FIG. 5 is a plan view of a fluid packaging body with a self-closing outflow passage having a single linear convex portion and a hollow quantitative portion according to the present invention.Is.
FIG. 6 is a plan view of a fluid packaging body with a self-closing outflow passage having a linear convex portion having a minor number and a hollow quantitative portion according to the present invention.Is.
FIG. 7 is a plan view of a hollow quantitative portion of a fluid packaging body with a self-closing outflow passage having a hollow quantitative portion according to the present invention.Is.
FIG. 8 is a plan view in which a hollow quantitative portion of a fluid packaging body with a self-closing outflow passage having a hollow quantitative portion of the present invention is slit or die-cut.Is.
FIG. 9 is various plan views of the self-closing outflow passage of the fluid packaging body with a self-closing outflow passage having a hollow metering portion according to the present invention.Is.
FIG. 10 is a plan view of various self-closing outflow passages of a fluid packaging body with a self-closing outflow passage having a hollow metering portion according to the present invention.Is.
FIG. 11 is a plan view of various self-closing outflow passages of a fluid packaging body with a self-closing outflow passage having a hollow metering portion according to the present invention.Is.
[Explanation of symbols]
1 film
2 Upper side weld
3 Liquid filling port
4 Outflow passage
5 Closing tip (exit)
6 Corner
7 Base end (entrance)
8 Bag body
9 Welded area around the bag
Claims (7)
流出通路の基端側に、形状が球形、楕円球形、重円錐台形、又は重３角錐台形のいずれかであり、容積が１〜１０ｃｍ３である中空定量部を設けるとともに、前記流出通路の基端をまたぐように、少なくとも１つの線状凸部を設け、かつ上記流出通路の中空定量部を除いた部分は、液体の流入・通過に対して抵抗を生じる屈曲形状となっていることを特徴とする流体包装袋。Two rectangular plastic films are polymerized, and their periphery is welded to form a bag for containing fluid. The outflow passage of the non-welded portion is connected to the upper welded portion and the base end thereof is communicated with the bag. In the fluid packaging bag with the outflow passage formed by arranging the closed tip at the corner,
The base end side of the outflow passage, shape spherical, oval sphere, heavy frustoconical, or either the heavy 3 truncated pyramidal, Rutotomoni provided a hollow quantification unit volume is. 1 to 10 cm 3, said outlet passage The at least one linear convex part is provided so as to straddle the base end, and the part excluding the hollow fixed part of the outflow passage has a bent shape that causes resistance to inflow and passage of liquid. A fluid packaging bag characterized by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000396432A JP4866502B2 (en) | 2000-12-27 | 2000-12-27 | Fluid packaging bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000396432A JP4866502B2 (en) | 2000-12-27 | 2000-12-27 | Fluid packaging bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002193282A JP2002193282A (en) | 2002-07-10 |
| JP4866502B2 true JP4866502B2 (en) | 2012-02-01 |
Family
ID=18861724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000396432A Expired - Fee Related JP4866502B2 (en) | 2000-12-27 | 2000-12-27 | Fluid packaging bag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4866502B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7866886B2 (en) * | 2002-11-22 | 2011-01-11 | Toyo Seikan Kaisha, Ltd. | Packaging bag with self-closeable outflow port, and method of manufacturing the packaging bag |
| JP4360853B2 (en) * | 2003-05-30 | 2009-11-11 | カウパック株式会社 | Packaging bag |
| CN102530362B (en) * | 2010-12-16 | 2014-10-15 | 廖耀鑫 | Liquid retaining bag |
| CN106536373B (en) * | 2014-07-08 | 2019-02-15 | 株式会社悠心 | Packaging bag |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4060943B2 (en) * | 1998-06-19 | 2008-03-12 | 大日本印刷株式会社 | Refillable pouch |
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2000
- 2000-12-27 JP JP2000396432A patent/JP4866502B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002193282A (en) | 2002-07-10 |
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