JP4296858B2 - Easy-to-open gusset bag - Google Patents

Easy-to-open gusset bag Download PDF

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JP4296858B2
JP4296858B2 JP2003184317A JP2003184317A JP4296858B2 JP 4296858 B2 JP4296858 B2 JP 4296858B2 JP 2003184317 A JP2003184317 A JP 2003184317A JP 2003184317 A JP2003184317 A JP 2003184317A JP 4296858 B2 JP4296858 B2 JP 4296858B2
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bag
easy
notch
gusset
folded
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JP2005015015A (en
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博一 齋藤
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Toppan Inc
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Toppan Inc
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Description

【0001】
【発明の属する技術分野】
本発明は味噌、スティック状砂糖、酒粕、粉体、パン粉等の収容容積を大きく必要とする収容物を包装するガセット袋に関し、詳しくは、ガセット袋に収容されている収容物を取り出す際に開封が容易にできるガセット貼り袋に関する。
【0002】
【従来の技術】
従来、袋の表裏面板が同じ大きさで収容物を多く収容するためのガセット袋はガセット製袋機の製袋工程で表裏面板の両サイドに折込み(ガセット)を形成したガセット袋か、あるいはチューブ状のフイルムからガセット袋を作って使用されている。また、ガセット袋に収容されている収納物を取り出す場合、ガセット袋の両側端部で内方に折込部が形成されている熱接着シール部にガセット袋を開封するためのIノッチあるいはVノッチまたはUノッチ等が施されている。しかし、IノッチあるいはVノッチまたはUノッチ等が施されている箇所から手で開封することが難しく、はさみやカッターナイフあるいは包丁等を用いて開封しなければならないと言う問題がある。このようなことから、ガセット袋の開口部の両側端部で内方に折込部が形成されている折込部分を外側に折り返して直線状態で開口部を密封シールし、密封シールされた外側周縁部分に開封するする為の直線状の切り込み(Iノッチ)あるいはV字形の切り込み(Vノッチ)またはU字形の切り込み(Uノッチ)等の開封手段を設けたものが知られている。しかし直線状態で開口部を密封シールする場合に作業上の制約が多く生産し難いと言う問題がある。この為に、はさみやカッターナイフあるいは包丁等を用いずに、易開封できるガセット袋として、熱可塑性樹脂層を有する積層フイルムからなり端縁熱接着部にて筒状とし両端部を内側に折り込んで上下熱接着部を設けたガセット袋の横方向の全周にわたって積層フイルムの外面にテープ材が接着され、端縁熱接着におけるテープ材が接着された部分の一方の積層フイルムの端縁部に切欠けが形成されるとともに、切欠けに対向する位置の他方の積層フイルムの端縁部のテープ材の両側に切目が設けられた構成の易開封袋が開示されている。(例えば、特許文献1)
【0003】
さらに、(特許文献1)に、積層フイルムの外側に接着されるテープ材の製造方法として、易開封袋を作製するための所定幅にスリットした後に積層フイルムの外面の所定位置に積層フイルムの流れに直角方向にテープ材を全幅にわたって接着し、テープ材が接着された部分の一方の端部に切欠を形成するとともに、積層フイルムのテープ材が接着された他方の端部におけるテープ材の両側に2箇所の切目を形成すると記載されている。さらに積層フイルムのテープ材が接着された他方の端部にテープ材の両側に2個所の切目が形成された積層フイルムを、製袋機にかけてガセット袋とするか、あるいは、自動充填包装機にかけて内容物を充填する工程でガセット袋にするとも記載されている。
【0004】
しかし、(特許文献1)に記載されているように製袋機あるいは自動充填機で易開封性袋を作製する際にあらかじめ積層フイルムの流れに直角方向にテープ材が接着され、さらに端部の一方に切欠等を形成したものを使用する場合、積層フイルムは製袋機あるいは自動充填機にかける前に他の加工機械により積層フイルムの流れに直角方向にテープ材を接着し、さらに端部の一方に切欠等を形成した後に一定の長さに巻き取らなければ成らず、巻き取られた積層フイルムの巻き取り紙の表面がテープ材が接着されていることにより凹凸状態になり、さらに積層フイルムがテープ材による凹凸で積層フイルムに厚薄が生じると言う問題がある。また積層フイルムの流れ方向に直角にテープ材が接着されている巻き取り紙を用いて製袋機あるい自動充填製袋包装機で製袋加工を施した場合、機械のガイド板等に接着されているテープ材が引っかかり易く、さらにテープ材の凹凸により厚薄が生じた積層フイルムを用いることにより製袋加工作業時にフイルムの蛇行が発生するなど非常に作業適正が悪く生産効率が著しく低下する問題がある。またテープ材を貼る作業工程が増え、テープの材料費もかかり生産コストが高くなると言う問題がある。
【0005】
また、開封容易なガセット袋として、ガセット袋天部の、片側の折込み側シール位置より下部に、折込み側袋体幅より短い切れ目を形成すると共に、該切れ目を含んで一定幅の接着剤層を設けるか、少なくても折込み側袋体内側のシール部分にシール強度低下機能を付与したものが開示されている。(例えば、特許文献2)上記(特許文献2)はガセット袋天部の、片側の折り込み側シール位置より下部に、折り込み側袋体幅より短い切れ目を形成すると共に、該切れ目を含んで一定幅の接着層を設けて成るガセット袋である。また接着層の代わりに切れ目上に剥離可能なラベルを貼り付けることも記載されている。またガセット袋に収容されている収容物を取り出す場合には上記切れ目から取り出される粉体、あるいは粒体の収容物であるとも記載されている。さらにガセット袋に収容している収容物が一体物の場合は、熱シールされる部分全体の接着力を低下させておけば、ガセット袋を破損する事無く容易に開封することが出来るとも記載されている。このようなことから引き裂き切り目等の開封するための対応が全く施されていない。しかしガセット袋は平袋と異なり、熱シールされる部分は積層フイルムが4枚に重ね合わされる部分と2枚が重ね合わされる部分とがあり、さらに4枚に重ね合わされている部分と2枚が重ね合わされている部分が対面する状態で熱シールされる個所もあり、接着力を低下させる事により熱シール部に未シール部あるいはピンホール等が生じガセット袋の防湿性、ガス遮断性等が著しく低下すると言う問題があり、ガセット袋を破損する事無く容易に開封出来る状態の接着は困難である。さらにラベル貼りをする場合には専用のラベル貼り機等を使用したり、さらにラベルの費用がかかり生産コストが高く成ると言う問題と作業工程が煩雑になる等の問題がある。
【0006】
【特許文献1】
特開平11−278502号公報
【特許文献2】
特開平5−310257号公報
【0007】
【発明が解決しようとする課題】
本発明は、上記従来の問題点に鑑み為されたもので、その目的とするところは、ガセット袋を煩雑な作業工程等を用いる事無く、既存の製袋機あるいは自動充填製袋包装機を用いて作製出来、且つガセット袋に収容されている収納物を取り出す際にナイフやはさみを用いずに手先で容易に開封ができる易開封性ガセット貼り袋を提供することにある。
【0008】
【課題を解決するための手段】
本発明は上記の課題を解決するために成されるもので、請求項1に係る発明は、プラスチックを主体とした基材シートからなり、対面する表裏面板の両側端部に内方への折込部を形成し、該折込部の端縁と表裏面板の両側端部が重なり合っている4箇所の長手方向を貼り合わせて端縁熱接着部を形成し、該端縁熱接着部の端辺に開封するための引き裂き切り込みを付けたガセット袋において、前記折込部の、引き裂き切り込みの形成位置に、折り込み部で折り返して重なり合う切り欠け部を設け、該切り欠け部およびその周縁を接着シールしたことを特徴とする易開封性ガセット貼り袋である。
【0009】
本発明の請求項2に係る発明は、上記表裏面板および折込部のプラスチックを主体とした基材シート、または一部の層が引き裂き方向に引き裂き容易になっていることを特徴とする請求項1記載の易開封性ガセット貼り袋である。
【0010】
【発明の実施の形態】
本発明の易開封性ガセット貼り袋を実施の形態に沿って以下に図面を参照しながら詳細に説明する。図2及び図6〜図8は本発明の易開封性ガセット貼り袋の一実施形態を示す。また図1(a) は本発明の参考例に係る易開封性ガセット貼り袋の一実施形態の正面を示す正面図あり、(b)は図1(a)の本発明の参考例に係る易開封性ガセット貼り袋の構成状態を説明する斜視図である。
【0011】
本発明の参考例に係る易開封性ガセット貼り袋(100)は図1(b)に示すようにプラスチックを主体とした基材シート(1)から成る表面板(7)と裏面板(8)、および表面板(7)と裏面板(8)とが対面する内側縦方向の両端部に内方へ折り込んだ部分を外側に折り返して成る2つのプラスチックを主体とした基材シート(1)の折り返し部材(10)とから形成されている。表面板(7)と裏面板(8)とが対面する内側縦方向の両端部と折り返し部材(10)の外側端部の4個所が重なり合って接着シールにより長手方向に端縁熱接着部(3)が4個所形成され、四角形の筒状に形成される。また、4個所に形成されている長手方向の端縁熱接着部(3)の上部開口部(9)の下方周縁にガセット貼り袋を開封する引き裂き切り込み)が形成され、さらに引き裂き切り込み)からの引き裂きを容易にさせるために折り返し部材(10)に貫通した易封孔部(11)が形成され、貫通した易封孔部(11)の周縁に表面板(7)の内側面と折り返し部材(10)の内側面、裏面板(8)の内側面と折り返し部材(10)の内側面が重なり合っている状態でスポット状に接着シールされ、貫通孔周縁接着シール部14)が形成されると同時に貫通した易封孔部(11)を介し表面板(7)の内側面と裏面板(8)の内側面がスポット状に接着シールされた部分が溶融状態で一体化されてスポット状接着シール部(5)が形成され、その部分が引き裂き切り込みの下方周縁に形成されと同時に下部開口部の表裏面板の端部に折り返し部材が内方に折り込まれている状態で接着シールされ、図1(a)に示すような下部底接着シール部(4)が形成され、上部開口部(9)が表裏面板(7)(8)の端部に折り返し部材(10)が内方に折り込まれている状態で易開封性ガセット貼り袋(100)が作製されている。また図1(a)あるいは(b)に示すような引き裂き切り込み(2)からの開封を促進するために折り返し部材(10)に形成される貫通した易封孔部(11)は易開封性ガセット貼り袋(100)を製袋する既存の製袋機上で長手方向に端縁熱接着部(3)が形成される前工程で、折り返し部材(10)を折り曲げ、折り重ねた状態、あるいは折り曲げる前の平らな状態のいずれかの状態で貫通した易封孔部(11)が設けられる。また折り返し部材(10)に設けられる貫通した易封孔部(11)の大きさは易開封性ガセット貼り袋(100)の大きさあるいは折返し部材(10)のガセット(折り返し)の幅または収容される収容物、プラスチックを主体とした基材シート(1)の構成等で異なるが直径が3mm〜30mm程度になされる。また貫通した易封孔部(11)に形成される形状は特に円形に限定されるものでなく、易開封性ガセット貼り袋(100)の機能、大きさ、収容する収容物あるいはデザイン、意匠性などにより形状が選定される。
【0012】
また、図1(a)に示す本発明の参考例に係る易開封性ガセット貼り袋(100)の両端縁熱接着部(3)に形成されている引き裂き切り込み(2)は袋の開封を容易にするために形成されるものであり既存の製袋機あるいは充填製袋包装機上で直線状の引き裂き切り込み(Iノッチ)あるいはホームベース形状の五角形の引き裂き切り込み(亀の子ノッチ)またはU字型の引き裂き切り込み(Uノッチ)あるいは図1(a)に示すようなV字型の引き裂き切り込み(Vノッチ)等が、端縁熱接着部(3)が形成されると同時か、あるいは端縁熱接着部(3)が形成された後に施される。また、Iノッチあるいは亀の子ノッチまたは図1(a)に示すようなVノッチは既製の製袋機上で施すこともできが、製袋された後で引き裂き切り込み等を加工する専用の加工機により作製ることも出来る。本発明の易開封性ガセット貼り袋(100)の端縁熱接着部(3)端辺に施される引き裂き切り込みは引き裂きの際に引き裂き切り込みの先端に引っ張り力が一点に集中し易い直線状の引き裂き切り込みあるいはV字型の引き裂き切り込み(Vノッチ)またはホームベース形状の五角形の引き裂き切り込み(亀の子ノッチ)等が用いられる。
【0013】
次に、図2(a)は本発明の易開封性ガセット貼り袋(100)の一実施形態の正面を示す正面図あり、(b)は図2(a)の易開封性ガセット袋の構成を説明するための斜視図である。図2(b)に示すように易開封製ガセット袋(100)はプラスチックを主体とした基材シート(1)から成る表面板(7)と裏面板(8)、および表面板(7)と裏面板(8)とが対面する内側縦方向の両端部に内方へ折り込んだ部分を外側に折り返して成る2つのプラスチックを主体とした基材シート(1)の折り返し部材(10)とからなっている。表面板(7)と裏面板(8)とが対面する内側縦方向の両端部と折り返し部材(10)の内側端部の4個所が重なり合って接着シールにより長手方向に端縁熱接着部(3)が4個所形成され、四角形の筒状に形成される。また、4個所に形成されている端縁熱接着部(3)の上部開口部(9)が接着シールされる接着シール部の下方周縁に易開封性ガセット貼り袋(100)を開封する引き裂き切り込み(2)が形成され、さらに端縁熱接着部(3)に引き裂き切り込み(2)が形成されている表面板(7)と裏面板(8)と重なり合って端縁熱接着部(3)が形成されている折り返し部材(10)の周縁に引き裂きを容易にさせるために易封切り欠け部(12)が形成され、該易封切り欠け部(12)の周縁に表面板(7)の内側面と折り返し部材(10)の内側面、裏面板(8)の内側面と折り返し部(10)の内側面が折り畳まれ重なり合った状態でスポット状に接着シールされ、切り欠けスポット状接着部(23)が形成されると同時に易封切り欠け部(12)を介して表面板(7)と裏面板(8)がスポット状に接着シールされ、接着シールされた表面板(7)と裏面板(8)および折り込み部材が一体化され、同時に下部の表裏面板(7)(8)の端部に折り返し部材(10)が内方に折り込まれている状態で接着シールされ図2(a)に示すような下部底接着シール部(4)が形成され、上部開口部(9)が表裏面板(7)(8)の端部に折り返し部材(10)が内方に折り込まれている状態で易開封性ガセット貼り袋(100)が作製される。折り返し部材(10)に形成される易封切り欠け部(12)の大きさは易開封性ガセット貼り袋(100)の大きさあるいは易開封性ガセット貼り袋(100)のガセット(折り返し)の幅または収容される収容物、プラスチックを主体とした基材シート(1)の構成等により異なるが幅3mm〜30mm程度、長さが5mm〜30mm程度に成される。また、折り返し部材(10)に形成される易封切り欠け部(12)は製袋機あるいは充填製袋包装機上で施す事も出来、また製袋機あるいは充填製袋包装機で製袋あるいは充填包装する前に施すこともできる。
【0014】
また上記端縁熱接着部(3)の接着シールはバーシール、回転シール、インパルスシール、高周波シール、超音波シールなどのシール方式によりなされる。また貫通した易封孔部(11)あるいは易封切り欠け部(12)または周縁のスポット状の接着シールはスポット状に接着シールされる形状にバーシールあるいはインパルスシールの加熱部材を作製して製袋機あるいは充填製袋包装機上で施すことが出来る。また超音波シールの場合には、スポット状に接着シールされる接着シール形状に超音波発振用ホーンを作製して製袋機あるいは充填製袋包装機上で施すことが出来る。
【0015】
また、図2(a)に示す本発明の易開封性ガセット貼り袋(100)は図2(b)に示すように表面板(7)と裏面板(8)および折り返し部材(10)の3つの部材から構成され、3つの部材が製袋機上あるいは充填製袋包装機上で製袋されるが、必ずしも3つの部材を使用して易開封性ガセット貼り袋を製袋することに特に限定されるものでは無い。図には示していないが例えば一枚のプラスチックを主体とした基材シート(1)で両側端に内方への折り返し部が形成され、長手方向に端縁熱接着部(3)および引き裂き切り込み(2)さらに易封切り欠け部(12)を設け、易封切り欠け部(12)またはその周縁にスポット状の接着シールを施し切り欠けスポット状接着部(23)を形成させたものが既存の製袋機あるいは自動充填製袋包装機で作製することが容易にできる。さらにチューブ状のプラスチックを主体とした基材シート(1)を用いて上記と同様の易開封性ガセット貼り袋(100)を容易に作製することも出来る。
【0016】
次に、図3は本発明の参考例に係る易開封性ガセット貼り袋(100)の一実施形態を示す斜視図である。図3に示すように易開封性ガセット貼り袋(100)は表面板(7)と裏面板(8)の端部に折り込み部材(10)が端部の内方に形成され、両端部に4個所の長手方向に端縁熱接着部(3)が形成され、さらに下部が折り込み部材(10)を端部の内方に形成されている状態で下部底接着シール部(4)が形成されている。また、上部開口部(9)が接着シールされる、接着シール部の下方の端縁熱接着部(3)に開封するための引き裂き切り込み(2)が形成され、さらに、表裏面板(7)(8)の両端端縁熱接着部(3)の内方に折り込まれている折り込み部材(10)に引き裂き切り込み(2)が形成された下方周縁に貫通した易封孔部(11)が形成されている。貫通した易封孔部(11)周縁に施されるスポット状の接着シールの加工および加工工程は特に限定するものでなく、易開封性ガセット貼り袋(100)を製袋する製袋機上で貫通した易封孔部(11)の周縁にスポット状の接着シール加工を施すこともできる。さらに折り込み部材(10)に貫通した易封孔部(11)が成形され製袋加工されているガセット袋に収容物を収容し、上部開口部(9)の端部に折り込み部材(10)が内方に形成されている状態で上部開口部(9)を接着シールにより密封する際に同時あるいは前後に貫通した易封孔部(11)の周縁にスポット状の接着シール加工を施すこともできる。さらに易開封性ガセット貼り袋に収容される収容物の種類あるいは形状あるいは充填製袋包装機の形式等により充填製袋包装機上で易開封性ガセット貼り袋(100)を製袋加工を施しながら易開封性ガセット貼り袋(100)に収容物を収容した後に上部開口部(9)の端部に折り込み部材(10)が内方に形成されている状態で上部開口部(9)を接着シールし、上部天接着シール部を形成すると同時あるいは前後に貫通した易封孔部(11)周縁をスポット状に接着シールを施すことも出来る。いずれかの方法により易開封性ガセット貼り袋(100)に収容物を詰めたりあるいは充填した後に、上部開口部(9)を密封シールすることにより図5に示すような易開封性ガセット貼り袋の包装形態が形成される。また表面板(7)の内側面と折り返し部材(10)の内側面、裏面板(8)の内側面と折り返し部材(10)の内側面にスポット状のスポット状接着シール部が形成されると同時に貫通した易封孔部(11)を介し表面板(7)の内側面と裏面板(8)の内側面が貫通した易封孔部(11)の孔の形状に接着シールされ、表面板(7)と裏面板(8)が接着シールされると同時に表面板(7)と折り返し部材(10)と裏面板(10)が一体化されていることにより、上部接着シール部が形成される下方端縁熱接着部(3)に施されている引き裂き切り込み(2)から上部天接着シール部の下方を僅かな力で容易引き裂き、切り取り開封する事ができる。
【0017】
次に、図4は参考例に係る本発明の易開封性ガセット貼り袋(100)のまた他の一実施形態の正面を示す正面図である。本易開封性ガセット貼り袋(100)の底部に角底形を形成させる場合、図3に示すような表裏面板(7)(8)の端部に折り込み部材(10)が内方に形成されている状態で下部底接着シール部(4)を形成する以外に、図4に示すように表裏面板(7)(8)の端部に折り込み部材(10)が内方に形成されている状態で下部底接着シール部(4)を形成し、さらに下部底接着シール部(4)と端縁熱接着部(3)を連接する逆ハの字形の傾斜接着シール部(6)を形成することにより液体あるいはペースト状の収容物を充填する際に逆ハの字形の傾斜接着シール部(6)で液体あるいはペースト状の収容物が防止される事により底部が容易に角底形に形成される。このために図4に示すような製袋した易開封性ガセット貼り袋(100)は液体あるいはペースト状の収容物等に適している包装形態の一つである。
【0018】
また、図5は本発明の参考例に係る易開封性ガセット貼り袋(100)に収容物が収容されている一実施形態を示す斜視図である。図5に示すように易開封性ガセット貼り袋(100)に収容物が収容され底部は角底形(ひだつき)に形成され、上部は屋根型状の三角形に形成されている。また、易開封性ガセット貼り袋(100)に収容される収容物によって屋根型状の三角形に形成されている部分を表面板(7)あるいは裏面板(8)のいずれかの方向に折り畳み上部天接着シール部(13)周縁に粘着ラベル等により上部天接着シール部(13)と表面板(7)あるいは裏面板(8)とを重ね合わされて上部も底部と同じように角型形状に施すことも可能である。また、図5に示すような易開封性ガセット貼り袋(100)に収容されている収容物を取り出す場合には、易開封性ガセット貼り袋(100)の上部天接着シール部(13)両端の下方端縁熱接着部(3)に形成されている引き裂き切り込み(2)の両側を両手の指先で摘んで引き裂くことにより、引き裂き切り込み(2)に施されているV字型ノッチあるいはI字型ノッチ等の切れ目の内側方向の下方周縁に表裏面板(7)(8)および折り込み部材(10)が一体化され、スポット状にスポット状接着シール部(5)が形成されている事により易開封性ガセット貼り袋(100)の上部天接着シール部(13)の下方周縁が容易に引き裂かれ、上部天接着シール部(13)が切り取られ収容している収容物を取り出すことができる。
【0019】
次に図6は本発明の易開封性ガセット貼り袋(100)に用いられるプラスチックを主体とする基材シートの一実施形態の構成を示す断面図である。図7は本発明の易開封性ガセット貼り袋(100)に用いられるプラスチックを主体とする基材シート(1)の他の一実施形態の構成を示す断面図である。図6に示すように易開封性ガセット貼り袋(100)に用いられるプラスチックを主体とする基材シート(16)は少なくも基材層(18)と熱可塑性樹脂層(19)の積層シートからなる。また、易開封性ガセット貼り袋(100)に収容する収容物によって品質の劣化あるいは保存期間などの問題から酸素遮断性や水蒸気あるいは遮光性を目的としてバリアフイルムあるいはアルミニウム箔などによる中間層(20)が図7に示すようなプラスチックを主体とする基材シート(17)に形成される。また中間層(20)は易開封性ガセット貼り袋(100)に収容する収容物の品質の劣化あるいは保存を長く保つ為に施されるだけでなく易開封性ガセット貼り袋(100)の美粧性や意匠性を付与するために紙等も用いられる。さらに中間層(20)にも開封性を良くするために、開封の際に引き裂かれる方向に引き裂かれ易い樹脂フイルムを用いることもできる。例えば、一定の分子配向で横直線カット性のある延伸ポリエチレン樹脂フイルム、メタロセン系の直鎖低密度ポリエチレン樹脂フイルム等も使用できる。さらに中間層(20)に用いられるバリアフイルムとしては未延伸バリアフイルム/アルミニウム箔あるいは未延伸ポリプロピレンフイルム、またはポリエチレンフイルムに酸化錫、酸化インジウム、ケイ素酸化物、酸化ジルコニウム、アルミニウム、酸化アルミニウム等の薄膜層を形成した蒸着フイルム等が使用できる。上記薄膜を形成する方法は、イオンビーム法、電子ビーム法、物理蒸着法、化学蒸着法やスパッタリング法等があり、いずれかの方法を用いて形成される。
【0020】
次に、図8は本発明の易開封性ガセット貼り袋(100)に用いられるプラスチックを主体とする基材シート(22)のまた他の一実施形態の構成を示す断面図である。図8に示すように基材層(18)を形成する基材フイルムは美粧性等を施す為の印刷加工が施される。印刷加工は一般に基材フイルムの裏側面にグラビア印刷か、あるいはフレキソ印刷等により施される。グラビア印刷の場合、印刷インキはウレタン系あるいはアクリル系またはビニル系、ゴム系樹脂を含む公知のインキが用いられる。さらに印刷層(21)の裏側面に中間層(20)あるいは熱可塑性樹脂層(19)が形成されるが樹脂あるいは樹脂フイルムが押出ラミネート、サンドイッチラミネート、ドライラミネート、無溶剤ラミネート、サーマルラミネート、ウエットラミネートなどのいずれかにより施される。
【0021】
次に、プラスチックを主体とする基材シート(16,17,22)を構成する基材層(18)の樹脂としては延伸ポリプロピレン樹脂、ポリエチレンテレフタレート樹脂、エチレン‐プロピレン共重合樹脂、エチレン‐プロピレン‐ブテン三元重合体樹脂、ポリアミド樹脂、ポリ塩化ビニリデン樹脂、ポリカーボネート樹脂、ポリスチレン樹脂等が使用できる。また、樹脂層の厚さは6μm〜40μm程度に形成される。
【0022】
また、プラスチックを主体とする基材シート(16,17,22)を構成する熱可塑性樹脂層(19)に使用される樹脂としては、低密度ポリエチレン樹脂、線状低密度ポリエチレン樹脂、エチレン‐プロピレン共重合体樹脂、エチレン‐プロピレン‐ブテン三元重合体樹脂、ポリプロピレン樹脂、中密度ポリエチレン樹脂、アイオノマー樹脂等が用いられる。また、熱可塑性樹脂層(19)は10μm〜60μm程度の厚さに形成される。
【0023】
上記のように、本発明の易開封性ガセット貼り袋(100)に用いられるプラスチックを主体とした基材シート(16,17,22)は各樹脂層が積層され、積層された樹脂層、あるいは樹脂構成によって引き裂き切り込みからの引き裂き性を容易にすることができる。引き裂き性が容易な樹脂構成としては、例えば、ポリエチレンテレフタレート樹脂あるいは延伸ポリプロピレン樹脂/接着剤/一定の分子配向で横直線カット性のある延伸ポリエチレン樹脂/接着剤/横カット性の良いメタロセン系の直鎖低密度ポリエチレン樹脂または横カット性の良い低密度ポリエチレン‐エチレン・酢酸ビニル共重合体樹脂、あるいは一定の分子配向で横直線カット性のあるポリエチレンテレフタレート樹脂/接着剤/横カット性の良いメタロセン系の直鎖低密度ポリエチレン樹脂あるいは横カット性の良い低密度ポリエチレン‐エチレン・酢酸ビニル共重合体樹脂等がある。また上記の樹脂構成の積層方法はドライラミネート法により成されたが、積層方法は特に限定するものでない。
【0024】
【発明の効果】
本発明の易開封性ガセット貼り袋は対面する表面板と裏面板の両側端部に内方にへの折込部が形成され、表面板と裏面板および折込部が重なり合つている4個所の長手方向を貼り合わせて端縁熱接着部を形成し、該端縁熱接着部の端辺に引き裂き切り込み部が形成され、該引き裂き切り込み部の位置あるいは引き裂き切り込み部の下側周縁に折込部が折り返されたプラスチックを主体とする基材シートに折り返して重なり合う切り欠け部を形成し、さらにその周縁が接着シールされ、該接着シール部が折返部の内側面と表裏側面の内側面同士が接着シールされている以外に折込部に形成している切り欠け部を介して表側面の内側面と外側面の内側面が接着シールされ一体化されている。このことにより易開封性ガセット貼り袋を開封するときに易開封性ガセット貼り袋の長手方向端縁熱接着部端辺に形成されている引き裂き切り込みの両側を両方の指先で摘んで外側に引き裂くことにより、僅かな力で容易に開口部の上部接着シール部を切り取り除去することができる優れた易開封性ガセット貼り袋である。
【0025】
また、長手方向端縁熱接着部端辺に形成されている引き裂き切り込みの位置、あるいは引き裂き切り込みの下側周縁の折り込み部の内側面と表裏側面の内側面同士が接着シールされている以外に折り込み部に形成している切り欠け部を介して表側面の内側面と外側面の内側面が接着シールされ一体化され、引き裂き性を向上させている以外に易開封性ガセット貼り袋を形成しているプラスチックを主体とした基材シートの基材層あるいは中間層または熱可塑性樹脂層に一定の分子配向で横直線カット性のある樹脂層が形成されていることにより、一層易開封性ガセット貼り袋に収容している収容物を取り出す際に上部天接着シール部の下側を引き裂き、切り取ることが容易になり、幼い子供やお年寄りあるいは身体が悪く、力が弱い人でも僅かの力で容易に開封することがでまる。さらに本発明の易開封性ガセット貼り袋は煩雑な作業工程等によることなく、従来から使用されている既製の製袋機あるいは充填製袋包装機上で容易に作製することができる。
【図面の簡単な説明】
【図1】 (a)は本発明の参考例に係る易開封性ガセット貼り袋の一実施形態の正面を示す正面図である。 (b)は図1(a)の易開封性ガセット貼り袋が形成される状態を示す斜視図である。
【図2】 (a)は本発明の易開封性ガセット貼り袋の他の一実施形態の正面を示す正面図である。
(b)は図2(a)の易開封性ガセット貼り袋が形成される引き裂き切れ込み状態を示す斜視図である。
【図3】 本発明の参考例に係る易開封性ガセット貼り袋の上部開口部が開口されている一実施形態を示す斜視図である。
【図4】 本発明の参考例に係る易開封性ガセット貼り袋のまた他の一実施形態の正面を示す正面図である。
【図5】 本発明の参考例に係る易開封性ガセット貼り袋に収容物が収容された一実施形態を示す斜視図である。
【図6】 本発明の易開封性ガセット貼り袋が形成されるプラスチックを主体とした基材シートの一実施形態の断面を示す断面図である。
【図7】 本発明の易開封性ガセット貼り袋が形成されるプラスチックを主体とした基材シートの
他の一実施形態の断面を示す断面図である。
【図8】 本発明の易開封性ガセット貼り袋が形成されるプラスチックを主体とした基材シートのまた他の一実施形態の断面を示す断面図である。
【符号の説明】
1…プラスチックを主体とした基材シート
2…引き裂き切り込み
3…端縁熱接着部
4…下部底接着シール部
5…スポット状接着シール部
6…底傾斜接着シール部
7…表面板
8…裏面板
9…上部開口部
10…折り込み部材
11…貫通した易封孔部
12…易封切り欠け部
13…上部天接着シール部
14…貫通孔周縁接着シール部
15…切り欠け周縁接着シール部
16…プラスチックを主体とした基材シート
17…プラスチックを主体とした基材シート
18…基材層
19…熱可塑性樹脂層
20…中間層
21…印刷層
22…プラスチックを主体とした基材シート
23…切り欠けスポット状接着部
100…易開封性ガセット貼り袋
[0001]
BACKGROUND OF THE INVENTION
  The present invention is miso,stickGusset bags for packaging contents that require a large capacity, such as sugar, liquor, liquor, powder, bread crumbs, and more specifically, gusset affixing that can be easily opened when removing the contents contained in the gusset bags Regarding bags.
[0002]
[Prior art]
  Conventionally, the front and back plates of the bag are the same size and contain a large amount of items.forGusset bags are folded on both sides of the front and back plates in the bag making process of the gusset bag making machine (GussetFormed)GussetFrom a bag or tube filmGussetUsed to make bags. Further, when taking out the contents stored in the gusset bag, an I notch or V notch for opening the gusset bag in the heat-bonding seal portion in which the folding portion is formed inward at both ends of the gusset bag or U notch etc. are given. However, there is a problem that it is difficult to open by hand from a location where an I notch, V notch, U notch, or the like is given, and that it must be opened using scissors, a cutter knife, a knife, or the like. For this reason, the outer peripheral edge portion that is hermetically sealed by hermetically sealing the opening portion in a straight line by folding the folding portion in which the folding portion is formed inward at both end portions of the opening portion of the gusset bag. It is known to provide opening means such as a linear notch (I notch), a V-shaped notch (V notch), or a U-shaped notch (U notch). However, when the opening is hermetically sealed in a straight state, there is a problem that production is difficult and production is difficult. For this purpose, as a gusset bag that can be easily opened without using scissors, a cutter knife, a knife, etc., it is made of a laminated film with a thermoplastic resin layer and is formed into a cylindrical shape at the edge thermal bonding portion, and both ends are folded inward. The tape material is bonded to the outer surface of the laminated film over the entire circumference of the gusset bag with the upper and lower heat-bonded parts, and cut to the edge of one of the laminated films where the tape material is bonded in edge thermal bonding. An easy-open bag having a configuration in which notches are formed and notches are provided on both sides of the tape material at the edge of the other laminated film at a position facing the notches is disclosed. (For example, Patent Document 1)
[0003]
  Furthermore, in Patent Document 1, as a method for producing a tape material adhered to the outside of a laminated film, the laminated film flows to a predetermined position on the outer surface of the laminated film after slitting to a predetermined width for producing an easy-open bag. Adhering the tape material in the direction perpendicular to the entire width, forming a notch at one end of the part where the tape material is adhered, and on both sides of the tape material at the other end where the tape material of the laminated film is adhered It is described that two cuts are formed. Furthermore, the laminated film with two cuts formed on both sides of the tape material on the other end to which the laminated film tape material is bonded is put into a gusset bag by a bag making machine, or it is put into an automatic filling and packaging machine. It is also described that a gusset bag is formed in the process of filling the product.
[0004]
  However, as described in (Patent Document 1), when producing an easy-open bag with a bag making machine or an automatic filling machine, a tape material is bonded in a direction perpendicular to the flow of the laminated film in advance, When using one with a notch formed on one side, the laminated film is bonded to the tape material in a direction perpendicular to the flow of the laminated film by another processing machine before being applied to the bag making machine or automatic filling machine. After forming a notch or the like on one side, it must be wound to a certain length, and the surface of the wound paper of the laminated film becomes uneven due to the tape material being adhered, and further the laminated film However, there is a problem in that the laminated film is uneven due to the unevenness of the tape material. In addition, when bag making is performed with a bag making machine or an automatic filling bag making and packaging machine using a roll paper to which a tape material is bonded at right angles to the flow direction of the laminated film, it is adhered to a guide plate of the machine. The tape material is easily caught, and the use of a laminated film that is thick and thin due to the unevenness of the tape material causes problems such as the occurrence of meandering of the film during bag making processing, and the work efficiency is very poor and the production efficiency decreases significantly. is there. In addition, there is a problem that the number of work steps for applying the tape material increases, the material cost of the tape increases, and the production cost increases.
[0005]
  In addition, as a gusset bag that can be easily opened, a cut line shorter than the folding side bag body width is formed below the folding side seal position on one side of the top of the gusset bag, and an adhesive layer having a constant width including the cut line is formed. It is disclosed that at least the seal portion on the inner side of the folding side bag body is provided with a function of reducing the seal strength. (For example, Patent Document 2) In the above (Patent Document 2), a slit shorter than the width of the folding side bag body is formed below the folding side seal position on one side of the gusset bag top, and the fixed width including the slit is formed. This is a gusset bag provided with an adhesive layer. It also describes that a peelable label is attached on the cut instead of the adhesive layer. In addition, it is also described that when a container contained in a gusset bag is taken out, it is a powder or granule container taken out from the cut. Furthermore, it is stated that if the contents contained in the gusset bag are a single piece, it can be easily opened without damaging the gusset bag if the adhesive strength of the entire heat-sealed portion is reduced. ing. For this reason, no measures are taken to open tears and the like. However, unlike flat bags, the gusset bag has a heat-sealed part that includes a part where the laminated film is superposed on four sheets and a part where the two sheets are superposed on each other. Some parts are heat sealed with the overlapping parts facing each other, and by reducing the adhesive force, unsealed parts or pinholes occur in the heat sealed part, and the gusset bag's moisture and gas barrier properties are remarkably high. There is a problem of lowering, and it is difficult to bond in a state that can be easily opened without damaging the gusset bag. Further, when labeling is performed, there is a problem that a dedicated labeling machine or the like is used, and that the cost of the label increases and the production cost increases, and the work process becomes complicated.
[0006]
[Patent Document 1]
        JP 11-278502 A
[Patent Document 2]
        JP-A-5-310257
[0007]
[Problems to be solved by the invention]
  The present invention has been made in view of the above-described conventional problems, and the object of the present invention is to use an existing bag making machine or an automatic filling bag making and packaging machine without using a gusset bag with complicated work processes. An object of the present invention is to provide an easily openable gusseted pouch that can be easily opened by hand without using a knife or scissors when taking out the stored items that can be used and stored in the gusseted bag.
[0008]
[Means for Solving the Problems]
  The present invention is made to solve the above-mentioned problems, and the invention according to claim 1 is composed of a base material sheet mainly made of plastic, and is folded inward at both end portions of the front and back plates facing each other. Forming an edge thermal bonding portion by bonding the four longitudinal directions where the edge of the folded portion and the both side edge portions of the front and back plates overlap each other, and forming an edge thermal bonding portion on the edge of the edge thermal bonding portion In a gusset bag with a tear notch for opening,A notch portion that is folded and overlapped at the folding portion is provided at the tearing cut formation position of the folding portion, and the notch portion is provided.And an easily openable gusset-attached bag in which the periphery thereof is adhesively sealed.
[0009]
  The invention according to claim 2 of the present invention provides the above front and back plates andFolding part2. The easily openable gusseted pouch according to claim 1, wherein a base sheet mainly composed of the above plastic or a part of layers is easily torn in the tearing direction.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
  The easy-open gusset-attached bag of the present invention will be described in detail below with reference to the drawings along the embodiments.2 and 6 to 8These show one Embodiment of the easily openable gusset sticking bag of this invention. FIG. 1 (a) shows the present invention.According to reference examplesBRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows the front of one Embodiment of an easily openable gusset sticking bag, (b) is FIG.According to reference examplesIt is a perspective view explaining the structure state of an easily openable gusset affixing bag.
[0011]
  Of the present inventionAccording to reference examplesAs shown in FIG. 1 (b), the easy-open gusset affixing bag (100) includes a front plate (7), a back plate (8), and a front plate (7) made of a base sheet (1) mainly composed of plastic. And a folded member (10) of the base sheet (1) mainly composed of two plastics formed by folding back the portions folded inward at both ends in the inner longitudinal direction where the back plate (8) faces each other. Is formed. The four ends of the inner longitudinal direction where the front plate (7) and the rear plate (8) face each other and the outer end of the folded member (10) are overlapped with each other, and the edge thermal bonding portion (3 ) Are formed in four places, and are formed in a rectangular tube shape. In addition, tearing that opens the gusseted bag on the lower periphery of the upper opening (9) of the longitudinal edge thermal bonding portion (3) formed at four locationsNotch(2) Formed and further tornNotch(2In order to facilitate tearing from, the easy sealing part (11) penetrating the folded member (10) is formed, and the inner surface of the surface plate (7) is formed on the periphery of the penetrating easy sealing part (11). The inner surface of the folded member (10), the inner surface of the back plate (8) and the inner surface of the folded member (10) are adhered and sealed in a spot shape,Through-hole peripheral adhesive seal(14) Is formed and the portion where the inner side surface of the front plate (7) and the inner side surface of the rear plate (8) are adhesively sealed in a spot form through the easy-sealing part (11) that penetrates at the same time is integrated IsTo form a spot-like adhesive seal (5), That part is tornNotchFormed on the lower periphery ofRuAt the same time, the bottom sealing member (4) as shown in FIG. 1 (a) is formed and bonded to the end of the front and back plates of the lower opening in a state where the folding member is folded inward to form the upper bottom. The easy-open gusseted pouch (100) is produced in a state where the opening (9) is folded inwardly at the ends of the front and back plates (7) and (8). Also tear as shown in Fig. 1 (a) or (b)NotchIn order to promote the opening from (2), the easy-to-open hole part (11) formed in the folding member (10) is formed on an existing bag making machine for making an easy-open gusseted bag (100). The folded member (10) is folded and folded in the previous step in which the edge thermal bonding portion (3) is formed in the longitudinal direction, orBendThe easy-sealing part (11) penetrated in any state of flat state beforeBe provided. Also on the folded member (10)Be providedThe size of the easy-sealing hole portion (11) penetrated is mainly the size of the easy-open gusset-attached bag (100) or the width of the gusset (folding) of the folding member (10) or the accommodated contents and plastic. Although it differs depending on the configuration of the base sheet (1), the diameter is about 3 mm to 30 mm. Moreover, the shape formed in the easy-sealing hole part (11) which penetrated is not specifically limited to a circle, but the function and size of the easy-open gusseted bag (100), the contents to be accommodated, the design, the design properties The shape is selected according to the above.
[0012]
  Further, the present invention shown in FIG.According to reference examplesThe tear formed in the heat bonding part (3) at both ends of the easy-open gusset bag (100)Notch(2) is formed to facilitate the opening of the bag, and is a linear tear cut (I notch) or a home base shaped pentagonal tear cut on an existing bag making machine or filling bag making and packaging machine. (Turtle notch) or U-shaped tear notch (U notch) or V-shaped tear notch (V notch) as shown in FIG. At the same time or after the edge thermal bonding portion (3) is formed. Also, the I notch, the turtle notch or the V notch as shown in FIG. 1 (a) can be applied on a ready-made bag making machine.RuMade with a dedicated processing machine that processes tears and cuts after bag makingYouYou can also Tear applied to the edge thermal bonding part (3) edge of the easy-open gusset bag (100) of the present inventionNotchTear when tearingNotchA linear tear that tends to concentrate the pulling force at one pointNotchAlternatively, a V-shaped tear notch (V notch), a home-base pentagonal tear notch (turtle notch), or the like is used.
[0013]
  Next, Fig.2 (a) is an easily openable gusset sticking bag (100) of this invention.One embodimentFIG. 2B is a front view showing the front side of FIG.GussetIt is a perspective view for demonstrating the structure of a bag. As shown in FIG. 2 (b), the easy-open gusset bag (100) includes a front plate (7), a back plate (8), and a front plate (7) made of a base sheet (1) mainly made of plastic. It consists of the folding | returning member (10) of the base material sheet | seat (1) mainly consisting of two plastics which folds the part folded inward to the both ends of the inner side vertical direction which a back surface board (8) faces. ing. The both ends of the inner vertical direction where the surface plate (7) and the back plate (8) face each other and the folded member (10)InsideFour end edge portions overlap each other, and four edge thermal bonding portions (3) are formed in the longitudinal direction by an adhesive seal, forming a quadrangular cylindrical shape. Also, tearing that opens the easily openable gusseted bag (100) on the lower peripheral edge of the adhesive seal part to which the upper opening (9) of the edge thermal bonding part (3) formed at four locations is adhesively sealedNotch(2) is formed and is further torn to the edge thermal bonding part (3)NotchIn order to facilitate tearing at the periphery of the folded member (10) on which the edge thermal bonding portion (3) is formed so as to overlap the front plate (7) and the back plate (8) on which (2) is formed An easily-sealed chip portion (12) is formed, and the inner surface of the surface plate (7), the inner surface of the folded member (10), and the inner surface of the back plate (8) are folded around the periphery of the easily-sealed chip portion (12). In the state where the inner surface of the portion (10) is folded and overlapped, it is adhesively sealed in a spot shape, and at the same time the notch spot-like adhesive portion (23) is formed, the surface plate (7 ) And the back plate (8) are adhesively sealed in a spot shape, and the adhesively sealed surface plate (7), the back plate (8) and the folding member are integrated, and at the same time, the lower front and back plates (7) and (8) The folding member (10) is folded inward at the end The bottom bottom adhesive seal portion (4) as shown in FIG. 2 (a) is formed by being adhesively sealed, and the upper opening portion (9) is a folded member (10) at the ends of the front and back plates (7) and (8). ) Is folded inward, and the easy-open gusseted bag (100) is produced. Of the easy-sealing notch (12) formed in the folded member (10)Easy to open gusset bagDepending on the size of (100) or the width of the gusset (folded) of the easy-open gusset-attached bag (100) or the contents to be accommodated, the structure of the base sheet (1) mainly made of plastic, etc. The length is about 30 mm and the length is about 5 mm to 30 mm. In addition, the folded member (10)Easy-to-cut notch formed(12) can be applied on a bag making machine or a filling bag making and packaging machine, or can be applied before bag making or filling and packaging by a bag making machine or a filling bag making and packaging machine.
[0014]
  Also,The edge thermal bonding portion (3) is bonded by a sealing method such as a bar seal, a rotary seal, an impulse seal, a high frequency seal, and an ultrasonic seal. In addition, a bar seal or impulse seal heating member is produced in a shape to be sealed in the form of a spot-like adhesive seal penetrating through-hole sealing portion (11) or easy-sealing notch portion (12) or a peripheral edge. Or on a filling bag making and packaging machine. In the case of ultrasonic sealing, the ultrasonic seal is formed into an adhesive seal shape that is adhesively sealed in a spot shapeoscillationA horn can be produced and applied on a bag making machine or a filling bag making and packaging machine.
[0015]
  Also,FIG. 2 (a)The easy-open gusset affixing bag (100) of the present invention shown inFIG. 2 (b)As shown in FIG. 4, the front plate (7), the back plate (8), and the folded member (10) are composed of three members, and the three members are made on a bag making machine or a filling bag making and packaging machine. However, it is not necessarily limited to making an easily openable gusseted bag using three members. Although not shown in the figure, for example, a single sheet of plastic-based base sheet (1) is formed with inwardly folded portions at both ends, and in the longitudinal direction, an edge thermal bonding portion (3) and tearingNotch(2)In addition, easy-sealing chip(12)Installed, easy-open cut-off part(12) Or a spot-like adhesive seal on the peripheryCut outWhat formed the spot-like adhesion part (23) can be easily produced with an existing bag making machine or an automatic filling bag making and packaging machine. Furthermore, the easily openable gusseted bag (100) similar to the above can also be easily produced using the base sheet (1) mainly composed of a tube-shaped plastic.
[0016]
  Next, FIG. 3 shows the present invention.According to reference examplesIt is a perspective view which shows one Embodiment of an easily openable gusset sticking bag (100). As shown in FIG. 3, the easy-open gusseted bag (100) has folding members (10) formed at the ends of the front plate (7) and the back plate (8) inside the ends, and 4 at both ends. An edge thermal bonding portion (3) is formed in the longitudinal direction of the location, and a lower bottom adhesive seal portion (4) is formed in a state where the lower portion is formed with a folding member (10) inward of the end portion. Yes. Also, tearing for opening to the edge thermal bonding part (3) below the adhesive seal part, where the upper opening part (9) is adhesively sealedNotch(2) is formed, and further, a tear notch (2) is formed in the folding member (10) that is folded inwardly at both end edges of the front and back plates (7) and (8). An easy-sealing part (11) penetrating the lower peripheral edge is formed. The processing and processing steps of the spot-like adhesive seal applied to the periphery of the easy-sealing hole (11) that penetrates are not particularly limited, and on the bag-making machine for making the easy-open gusseted bag (100). A spot-like adhesive seal process can be applied to the peripheral edge of the easily sealed hole portion (11) that has penetrated. Further, the contained material is accommodated in a gusset bag in which the easy-sealing portion (11) penetrating the folding member (10) is molded and bag-making processed, and the folding member (10) is provided at the end of the upper opening (9). When the upper opening (9) is sealed with an adhesive seal while being formed inward, a spot-like adhesive sealing process can be applied to the periphery of the easy-sealing portion (11) penetrating at the same time or front and back. . Further, the bag is processed on the easy-open gusset-attached bag (100) on the filling bag making and packaging machine according to the type or shape of the contents accommodated in the easy-open gusset attaching bag or the form of the filling bag making and packaging machine. Adhesive seal the upper opening (9) with the folding member (10) formed inward at the end of the upper opening (9) after accommodating the contents in the easy-open gusseted bag (100) Then, when the upper ceiling adhesive seal portion is formed, the periphery of the easily sealed hole portion (11) penetrating at the same time or front and back can be adhesively sealed in a spot shape. The easy opening gusset affixing bag as shown in FIG. 5 is sealed by sealing the upper opening (9) after filling or filling the easy opening gusset affixing bag (100) by any method. A packaging form is formed. When spot-like spot-like adhesive seal portions are formed on the inner surface of the front plate (7), the inner surface of the folded member (10), the inner surface of the back plate (8), and the inner surface of the folded member (10). The inner surface of the front plate (7) and the inner surface of the back plate (8) penetrated through the easy-sealing part (11) that penetrated at the same time.Hole in the easy-sealing part (11)The surface plate (7), the back plate (8) are bonded and sealed, and at the same time the surface plate (7), the folded member (10) and the back plate (10) are integrated. The tear applied to the lower edge thermal bonding part (3) where the upper adhesive seal part is formedNotch(2) Easy to use under the top ceiling adhesive seal with a slight forceInCan be torn, cut and opened.
[0017]
  Next, FIG.According to reference examplesIt is a front view which shows the front of another one Embodiment of the easily openable gusset sticker bag (100) of this invention. When a square bottom shape is formed at the bottom of the easy-open gusseted bag (100), folding members (10) are formed inward at the ends of the front and back plates (7) and (8) as shown in FIG. In addition to forming the bottom bottom adhesive seal portion (4) in the state of being folded, the folding member (10) is formed inward at the end portions of the front and back plates (7) and (8) as shown in FIG. Forming a bottom bottom adhesive seal part (4), and further forming an inverted C-shaped inclined adhesive seal part (6) connecting the bottom bottom adhesive seal part (4) and the edge thermal adhesive part (3). When the liquid or paste-like contents are filled by the above, the bottom is easily formed into a square bottom by preventing the liquid or paste-like contents from being formed by the inverted cross-shaped inclined adhesive seal portion (6). . For this reason, the easy-open gusseted bag (100) formed as shown in FIG. 4 is one of the packaging forms suitable for liquid or paste-like contents.
[0018]
  FIG. 5 shows the present invention.According to reference examplesIt is a perspective view which shows one Embodiment in which the accommodation thing is accommodated in the easily openable gusset sticking bag (100). As shown in FIG. 5, the contents are accommodated in an easy-open gusseted bag (100), the bottom is formed into a square bottom (pleated), and the top is formed into a roof-shaped triangle. Further, the portion formed in the roof-shaped triangle by the accommodation accommodated in the easy-open gusseted bag (100) is folded in either the front plate (7) or the back plate (8), and the upper ceiling is folded. The top seal adhesive part (13) and the front plate (7) or the back plate (8) are overlapped on the periphery of the adhesive seal part (13) with an adhesive label or the like, and the upper part is applied in a square shape like the bottom part. Is also possible. Moreover, when taking out the accommodation accommodated in the easily openable gusset sticking bag (100) as shown in FIG. 5, the upper ceiling adhesive seal part (13) of both ends of the easy opening gusset sticking bag (100) Tear formed in the lower edge thermal bond (3)NotchBy tearing both sides of (2) with both fingertips and tearingNotchThe front and back plates (7), (8) and the folding member (10) are integrated with the lower peripheral edge in the inner direction of the cut such as the V-shaped notch or I-shaped notch provided in (2), and spot-like spots are formed. The lower peripheral edge of the upper ceiling adhesive seal portion (13) of the easily openable gusset affixing bag (100) is easily torn and the upper ceiling adhesive seal portion (13) is It is possible to take out the contents that have been cut out and stored.
[0019]
  Next, FIG. 6 is a cross-sectional view showing a configuration of an embodiment of a base sheet mainly made of plastic used in the easy-open gusseted bag (100) of the present invention. FIG. 7: is sectional drawing which shows the structure of other one Embodiment of the base material sheet | seat (1) which mainly uses the plastic used for the easily openable gusset sticking bag (100) of this invention. As shown in FIG. 6, a base sheet (mainly plastic) used for an easy-open gusset bag (100)16) LessWhenIs also composed of a laminated sheet of a base material layer (18) and a thermoplastic resin layer (19). Further, the intermediate layer (20) made of a barrier film or aluminum foil for the purpose of oxygen barrier property, water vapor or light shield property due to problems such as deterioration in quality or storage period depending on the contents stored in the easy-open gusseted bag (100). Is a base sheet mainly composed of plastic as shown in FIG.17). In addition, the intermediate layer (20) is not only applied for maintaining the deterioration or preservation of the quality of the contents stored in the easy-open gusset bag (100), but also the cosmetic properties of the easy-open gusset bag (100). In addition, paper or the like is also used for imparting design properties. Furthermore, in order to improve the unsealing property of the intermediate layer (20), a resin film that can be easily torn in the direction of tearing at the time of unsealing can be used. For example, a stretched polyethylene resin film having a certain molecular orientation and a transverse straight line cutting property, a metallocene linear low density polyethylene resin film, and the like can be used. Further, as the barrier film used for the intermediate layer (20), an unstretched barrier film / aluminum foil, an unstretched polypropylene film, or a polyethylene film and a thin film of tin oxide, indium oxide, silicon oxide, zirconium oxide, aluminum, aluminum oxide, etc. A vapor-deposited film in which a layer is formed can be used. The method for forming the thin film includes an ion beam method, an electron beam method, a physical vapor deposition method, a chemical vapor deposition method, a sputtering method, and the like.FormationIs done.
[0020]
  Next, FIG. 8 is sectional drawing which shows the structure of other one Embodiment of the base material sheet | seat (22) mainly made of the plastic used for the easily openable gusset sticking bag (100) of this invention. As shown in FIG. 8, the base material film for forming the base material layer (18) is subjected to a printing process for giving cosmetics and the like. In general, the printing process is performed on the back side of the base film by gravure printing or flexographic printing. In the case of gravure printing, a known ink containing urethane-based, acrylic-based, vinyl-based, or rubber-based resin is used as the printing ink. Further, an intermediate layer (20) or a thermoplastic resin layer (19) is formed on the back side of the printed layer (21), but the resin or resin film is extruded laminate, sandwich laminate, dry laminate, solventless laminate, thermal laminate, wet. It is applied by either lamination.
[0021]
  Next, as the resin for the base layer (18) constituting the base sheet (16, 17, 22) mainly composed of plastic, stretched polypropylene resin, polyethylene terephthalate resin, ethylene-propylene copolymer resin, ethylene-propylene- Butene terpolymer resin, polyamide resin, polyvinylidene chloride resin, polycarbonate resin, polystyrene resin and the like can be used. The thickness of the resin layer is about 6 to 40 μm.
[0022]
  In addition, a base sheet mainly made of plastic (16, 17, 22As a resin used for the thermoplastic resin layer (19) constituting the), a low density polyethylene resin, a linear low density polyethylene resin,Ethylene-propyleneCopolymerResin, ethylene-propylene-buteneTernary polymer resins, polypropylene resins, medium density polyethylene resins, ionomer resins and the like are used. The thermoplastic resin layer (19) is 10μm~ 60μmTo a thickness of aboutFormationIs done.
[0023]
  As mentioned above, it is used for the easy-open gusset bag (100) of the present invention.plasticBase sheet (mainly16, 17, 22) Each resin layer is laminated, and it is torn by the laminated resin layer or resin structureNotchIt is possible to facilitate tearing. Examples of a resin structure that is easy to tear include, for example, polyethylene terephthalate resin or stretched polypropylene resin / adhesive / stretched polyethylene resin with a constant molecular orientation and a transverse linear cut property / adhesive / a metallocene-based direct resin with good lateral cut property. Low density polyethylene with low chain density or good lateral cutPolyethylene-ethylene・ Vinyl acetate copolymer resin or polyethylene terephthalate resin with horizontal linear cut property with a certain molecular orientation / adhesive / metallocene linear low density polyethylene resin with good horizontal cut property or low density with good horizontal cut propertyPolyethylene-ethylene-Vinyl acetate copolymer resin. Moreover, although the lamination | stacking method of said resin structure was comprised by the dry lamination method, the lamination | stacking method is not specifically limited.
[0024]
【The invention's effect】
  The easy-opening gusseted bag of the present invention has four longitudinal portions where inwardly folded portions are formed at both side end portions of the facing surface plate and the back surface plate, and the front surface plate, the back surface plate and the folded portion overlap each other. Bonding directions to form an edge thermal bond, tearing to the edge of the edge thermal bondNotchPart is formed and the tearNotchLocation or tearNotchFolded back to the base sheet mainly made of plastic with the folding part folded back at the lower peripheral edgeOverlapping cutoutFurther, the peripheral edge thereof is adhesively sealed, and the adhesive seal portion is formed in the folded portion in addition to the inner side surface of the folded portion and the inner side surfaces of the front and back sides being adhesively sealed.NotchThe inner side surface of the front side surface and the inner side surface of the outer side surface are bonded and sealed together through the. By this, when the easy-open gusset bag is opened, the tear formed on the edge of the heat-bonding portion in the longitudinal direction edge of the easy-open gusset bagNotchIt is an excellent easy-open gusseted bag that can be easily removed by removing the upper adhesive seal portion of the opening with a slight force by picking both sides of the bag and tearing it outward.
[0025]
  In addition, the tear formed on the edge of the thermal bonding part in the longitudinal direction edgeNotchPosition or tearNotchThe inner surface of the folded portion at the lower peripheral edge and the inner surfaces of the front and back side surfaces are formed in the folded portion other than being adhesively sealed.NotchA base sheet mainly composed of plastic that forms an easy-to-open gusseted bag, in addition to improving the tearability by bonding and sealing the inner side surface of the front side and the inner side surface of the outer side through an adhesive. Since the base layer, intermediate layer, or thermoplastic resin layer is formed with a resin layer having a constant molecular orientation and a horizontal straight line cutting property, the contents contained in the easy-open gusseted bag are taken out. In this case, the lower side of the upper ceiling adhesive seal portion can be easily torn and cut off, and even a young child, an elderly person, a poor body, or a weak person can easily open it with a slight force. Furthermore, the easy-open gusseted bag of the present invention can be easily produced on a conventional bag-making machine or filling bag-making packaging machine that has been used conventionally without complicated work processes.
[Brief description of the drawings]
FIG. 1 (a) shows the present invention.According to reference examplesIt is a front view which shows the front of one Embodiment of an easily openable gusset pasting bag. (B) is a perspective view which shows the state in which the easily openable gusset affixing bag of Fig.1 (a) is formed.
FIG. 2 (a) is a front view showing the front of another embodiment of the easy-open gusseted bag of the present invention.
  (B) is a perspective view which shows the tearing-in state in which the easily openable gusset affixing bag of Fig.2 (a) is formed.
FIG. 3 of the present inventionAccording to reference examplesIt is a perspective view which shows one Embodiment by which the upper opening part of an easily openable gusset pasting bag is opened.
FIG. 4 of the present inventionAccording to reference examplesIt is a front view which shows the front of another one Embodiment of an easily openable gusset pasting bag.
FIG. 5 of the present inventionAccording to reference examplesIt is a perspective view which shows one Embodiment in which the accommodation thing was accommodated in the easily openable gusset sticking bag.
FIG. 6 is a cross-sectional view showing a cross section of an embodiment of a base sheet mainly made of plastic on which the easy-open gusseted bag of the present invention is formed.
FIG. 7 is a diagram of a base material sheet mainly made of plastic from which the easy-open gusseted bag of the present invention is formed.
It is sectional drawing which shows the cross section of other one Embodiment.
FIG. 8 is a cross-sectional view showing a cross section of still another embodiment of a base material sheet mainly made of plastic on which the easy-open gusseted bag of the present invention is formed.
[Explanation of symbols]
    1. Base material sheet mainly made of plastic
    2 ... tearing
    3 ... Edge thermal bonding part
    4 ... Lower bottom adhesive seal
    5. Spot adhesive seal
    6 ... Bottom inclined adhesive seal
    7 ... Surface plate
    8 ... Back plate
    9 ... Upper opening
    10. Folding member
    11 ... Easy sealing part that penetrated
    12 ... Easy cutout part
    13 ... Upper ceiling adhesive seal
    14 ... Peripheral hole adhesive seal part
    15 ... Notch peripheral adhesive seal part
    16 ... Base sheet mainly made of plastic
    17 ... Base sheet mainly made of plastic
    18 ... Base material layer
    19 ... thermoplastic resin layer
    20 ... Middle layer
    21 ... printing layer
    22 ... Base sheet mainly composed of plastic
    23 ... Spot-like adhesive part of notch
  100 ... Easy-open gusset bag

Claims (2)

プラスチックを主体とした基材シートからなり、対面する表裏面板の両側端部に内方への折込部を形成し、該折込部の端縁と表裏面板の両側端部が重なり合っている4箇所の長手方向を貼り合わせて端縁熱接着部を形成し、該端縁熱接着部の端辺に開封するための引き裂き切り込みを付けたガセット袋において、前記折込部の、引き裂き切り込みの形成位置に、折り込み部で折り返して重なり合う切り欠け部を設け、該切り欠け部およびその周縁を接着シールしたことを特徴とする易開封性ガセット貼り袋。It consists of a base material sheet mainly made of plastic, and is formed with inwardly folded portions at both end portions of the front and back plates facing each other, and the edge of the folded portion and both end portions of the front and back plates overlap. In the gusset bag with a tear notch for opening the edge of the edge heat-bonding part by forming the edge heat-bonding part by laminating the longitudinal direction, at the formation position of the tear notch in the folding part, An easily openable gusseted pouch comprising a cutout portion that is folded back and folded at a folding portion, and the cutout portion and the periphery thereof are adhesively sealed. 上記表裏面板および折込部のプラスチックを主体とした基材シート、または一部の層が引き裂き方向に引き裂き容易になっていることを特徴とする請求項1記載の易開封性ガセット貼り袋。2. The easily openable gusseted pouch according to claim 1, wherein the front and back plates and the base sheet mainly composed of plastic in the folded portion or a part of the layers are easily torn in the tearing direction.
JP2003184317A 2003-06-27 2003-06-27 Easy-to-open gusset bag Expired - Fee Related JP4296858B2 (en)

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US7963413B2 (en) 2006-05-23 2011-06-21 Kraft Foods Global Brands Llc Tamper evident resealable closure
US8114451B2 (en) 2006-12-27 2012-02-14 Kraft Foods Global Brands Llc Resealable closure with package integrity feature
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US8814430B2 (en) 2010-02-23 2014-08-26 Kraft Foods R&D, Inc. Food package having opening feature
EP2368811B1 (en) 2010-03-23 2012-08-22 Generale Biscuit Resealable packaging for food products and method of manufacturing
US9656783B2 (en) 2010-05-18 2017-05-23 Intercontinental Great Brands Llc Reclosable flexible packaging and methods for manufacturing same
PE20130940A1 (en) 2010-05-18 2013-09-02 Intercontinental Great Brands Llc FLEXIBLE PACKAGING THAT CAN BE CLOSED AGAIN AND METHODS OF MANUFACTURING THE SAME
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