JP4549472B2

JP4549472B2 - Gusset bag and gusset bag with pouring tool

Info

Publication number: JP4549472B2
Application number: JP2000018175A
Authority: JP
Inventors: 秀夫梅原; 恭一下村
Original assignee: Dai Nippon Printing Co Ltd
Current assignee: Dai Nippon Printing Co Ltd
Priority date: 1999-11-12
Filing date: 2000-01-27
Publication date: 2010-09-22
Anticipated expiration: 2020-01-27
Also published as: JP2001199452A

Description

【０００１】
【発明の属する技術分野】
本発明は、液体、粘稠体、粉体、顆粒等の内容物を収納して自立させた際に、自立安定性に優れたガセット袋及び前記ガセット袋に注出具を取り付けた自立安定性に優れた注出具付きガセット袋に関するものである。
【０００２】
【従来の技術】
従来から内容物を収納して自立させることができる自立性包装袋としては、スタンディングパウチ、角底袋、あるいは、内容物を収納した時に角底となるガセットタイプの包装袋等が一般によく知られている。これらの自立性包装袋はいずれも、包装袋の底部に平面部が形成されるように構成されているために、立てた状態で置くことができ、販売時等には平置きする場合に比べて単位スペース当たりの陳列数が増大すると共に、顧客に対する訴求力も大きくなると共に、使用時には、立てた状態で開口部を開いて内容物を取り出すことができるために、他の容器等に移し替えずにそのまま使用することができるために利便性においても優れるということから色々な製品に適用されている。しかし、内容物を収納した時に包装袋の底部に平面部を形成するようにしたガセットタイプの包装袋にあっては、内容物の種類やその量（容量や重量）、あるいは、ガセットタイプの包装袋の材料構成等により、自立しにくいタイプのものもあった。
【０００３】
【発明が解決しようとする課題】
そこで本発明は、上記問題に鑑みてなされたものであり、その目的とするところは、内容物を収納した時に底部に平面部を形成し易くして自立安定性を著しく向上させたガセット袋を提供すると共に、このガセット袋に注出具を取り付けた自立安定性に優れた注出具付きガセット袋を提供することにある。
【０００４】
【課題を解決するための手段】
本発明者等は、上記目的を達成するために、請求項１の記載する発明は、上面板と背面板との間に断面略Ｖ字形状の２つの折り込み板の折部が対向するように挿設し、前記上面板と前記背面板と前記折り込み板で形成される四つの稜線の内面同士を熱接着して稜線熱接着部を有する筒状体となし、該筒状体の上端および下端をそれぞれ熱接着して天部熱接着部および底部熱接着部を形成すると共に、前記底部熱接着部から斜め上方に向けて前記稜線熱接着部に至る内面同士を熱接着して形成された底部形成用熱接着部を有するガセット袋において、前記上面板と前記折り込み板の前記底部熱接着部と前記稜線熱接着部と前記底部形成用熱接着部とにより形成された上面板側三角領域、ないし、前記背面板と前記折り込み板の前記底部熱接着部と前記稜線熱接着部と前記底部形成用熱接着部とにより形成された背面板側三角領域の少なくとも一方の側の前記三角領域に折り曲げ手段が設けられており、前記折り曲げ手段が、その一端が前記稜線熱接着部にまで達するものの前記稜線熱接着部の外端には達することがなく、その他端が前記底部形成用熱接着部の内端には達することがないミシン目であることを特徴とするものである。
【０００５】
また、請求項２に記載する発明は、上面板と背面板との間に断面略Ｖ字形状の２つの折り込み板の折部が対向するように挿設し、前記上面板と前記背面板と前記折り込み板で形成される四つの稜線の内面同士を熱接着して稜線熱接着部を有する筒状体となし、該筒状体の上端および下端をそれぞれ熱接着して天部熱接着部および底部熱接着部を形成すると共に、前記底部熱接着部から斜め上方に向けて前記稜線熱接着部に至る内面同士を熱接着して形成された底部形成用熱接着部を有するガセット袋において、前記上面板と前記折り込み板の前記底部熱接着部と前記稜線熱接着部と前記底部形成用熱接着部とにより形成された上面板側三角領域、及び、前記背面板と前記折り込み板の前記底部熱接着部と前記稜線熱接着部と前記底部形成用熱接着部とにより形成された背面板側三角領域の両方の側の前記三角領域に折り曲げ手段が設けられており、前記折り曲げ手段が、その一端が前記稜線熱接着部にまで達するものの前記稜線熱接着部の外端には達することがなく、その他端が前記底部形成用熱接着部の内端には達することがないミシン目であることを特徴とするものである。
【０００６】
また、請求項３に記載する発明は、上面板と背面板との間に断面略Ｖ字形状の２つの折り込み板を前記２つの折り込み板の折部が対向するように挿設し、前記上面板の右側端と対向する前記折り込み板で形成される稜線の内面同士を熱接着して形成される上面板側右側稜線熱接着部と、前記上面板の左側端と対向する前記折り込み板で形成される稜線の内面同士を熱接着して形成される上面板側左側稜線熱接着部と、前記背面板の右側端と対向する前記折り込み板で形成される稜線の内面同士を熱接着して形成される背面板側右側稜線熱接着部と、前記背面板の左側端と対向する前記折り込み板で形成される稜線の内面同士を熱接着して形成される背面板側左側稜線熱接着部とからなる四つの稜線熱接着部を有する筒状体となし、該筒状体の上端および下端をそれぞれ熱接着して天部熱接着部および底部熱接着部を形成すると共に、前記底部熱接着部から斜め上方に向けて前記上面板側右側稜線熱接着部に至る内面同士を熱接着して形成された上面板側右側底部形成用熱接着部と、前記底部熱接着部から斜め上方に向けて前記上面板側左側稜線熱接着部に至る内面同士を熱接着して形成された上面板側左側底部形成用熱接着部と、前記底部熱接着部から斜め上方に向けて前記背面板側右側稜線熱接着部に至る内面同士を熱接着して形成された背面板側右側底部形成用熱接着部と、前記底部熱接着部から斜め上方に向けて前記背面板側左側稜線熱接着部に至る内面同士を熱接着して形成された背面板側左側底部形成用熱接着部とからなる四つの底部形成用熱接着部を有するガセット袋において、前記上面板と前記折り込み板の前記底部熱接着部と前記上面板側右側稜線熱接着部と前記上面板側右側底部形成用熱接着部とにより形成された上面板側右側三角領域と、前記上面板と前記折り込み板の前記底部熱接着部と前記上面板側左側稜線熱接着部と前記上面板側左側底部形成用熱接着部とにより形成された上面板側左側三角領域と、前記背面板と前記折り込み板の前記底部熱接着部と前記背面板側右側稜線熱接着部と前記背面板側右側底部形成用熱接着部とにより形成された背面板側右側三角領域と、前記背面板と前記折り込み板の前記底部熱接着部と前記背面板側左側稜線熱接着部と前記背面板側左側底部形成用熱接着部とにより形成された背面板側左側三角領域とからなる４つの三角領域のうち、前記上面板側右側三角領域に上面板側右側折り曲げ手段が設けられており、前記上面板側左側三角領域に上面板側左側折り曲げ手段が設けられており、前記上面板側右側折り曲げ手段が、その一端が前記上面板側右側稜線熱接着部にまで達するものの前記上面板側右側稜線熱接着部の外端には達することがなく、その他端が前記上面板側右側底部形成用熱接着部の内端には達することがないミシン目であり、前記上面板側左側折り曲げ手段が、その一端が前記上面板側左側稜線熱接着部にまで達するものの前記上面板側左側稜線熱接着部の外端には達することがなく、その他端が前記上面板側左側底部形成用熱接着部の内端には達することがないミシン目であることを特徴とするものである。
【０００７】
また、請求項４に記載する発明は、上面板と背面板との間に断面略Ｖ字形状の２つの折り込み板を前記２つの折り込み板の折部が対向するように挿設し、前記上面板の右側端と対向する前記折り込み板で形成される稜線の内面同士を熱接着して形成される上面板側右側稜線熱接着部と、前記上面板の左側端と対向する前記折り込み板で形成される稜線の内面同士を熱接着して形成される上面板側左側稜線熱接着部と、前記背面板の右側端と対向する前記折り込み板で形成される稜線の内面同士を熱接着して形成される背面板側右側稜線熱接着部と、前記背面板の左側端と対向する前記折り込み板で形成される稜線の内面同士を熱接着して形成される背面板側左側稜線熱接着部とからなる四つの稜線熱接着部を有する筒状体となし、該筒状体の上端および下端をそれぞれ熱接着して天部熱接着部および底部熱接着部を形成すると共に、前記底部熱接着部から斜め上方に向けて前記上面板側右側稜線熱接着部に至る内面同士を熱接着して形成された上面板側右側底部形成用熱接着部と、前記底部熱接着部から斜め上方に向けて前記上面板側左側稜線熱接着部に至る内面同士を熱接着して形成された上面板側左側底部形成用熱接着部と、前記底部熱接着部から斜め上方に向けて前記背面板側右側稜線熱接着部に至る内面同士を熱接着して形成された背面板側右側底部形成用熱接着部と、前記底部熱接着部から斜め上方に向けて前記背面板側左側稜線熱接着部に至る内面同士を熱接着して形成された背面板側左側底部形成用熱接着部とからなる四つの底部形成用熱接着部を有するガセット袋において、前記上面板と前記折り込み板の前記底部熱接着部と前記上面板側右側稜線熱接着部と前記上面板側右側底部形成用熱接着部とにより形成された上面板側右側三角領域と、前記上面板と前記折り込み板の前記底部熱接着部と前記上面板側左側稜線熱接着部と前記上面板側左側底部形成用熱接着部とにより形成された上面板側左側三角領域と、前記背面板と前記折り込み板の前記底部熱接着部と前記背面板側右側稜線熱接着部と前記背面板側右側底部形成用熱接着部とにより形成された背面板側右側三角領域と、前記背面板と前記折り込み板の前記底部熱接着部と前記背面板側左側稜線熱接着部と前記背面板側左側底部形成用熱接着部とにより形成された背面板側左側三角領域とからなる４つの三角領域のうち、前記背面板側右側三角領域に背面板側右側折り曲げ手段が設けられており、前記背面板側左側三角領域に背面板側左側折り曲げ手段が設けられており、前記背面板側右側折り曲げ手段が、その一端が前記背面板側右側稜線熱接着部にまで達するものの前記背面板側右側稜線熱接着部の外端には達することがなく、その他端が前記背面板側右側底部形成用熱接着部の内端には達することがないミシン目であり、前記背面板側左側折り曲げ手段が、その一端が前記背面板側左側稜線熱接着部にまで達するものの前記背面板側左側稜線熱接着部の外端には達することがなく、その他端が前記背面板側左側底部形成用熱接着部の内端には達することがないミシン目であることを特徴とするものである。
【０００８】
また、請求項５に記載する発明は、上面板と背面板との間に断面略Ｖ字形状の２つの折り込み板を前記２つの折り込み板の折部が対向するように挿設し、前記上面板の右側端と対向する前記折り込み板で形成される稜線の内面同士を熱接着して形成される上面板側右側稜線熱接着部と、前記上面板の左側端と対向する前記折り込み板で形成される稜線の内面同士を熱接着して形成される上面板側左側稜線熱接着部と、前記背面板の右側端と対向する前記折り込み板で形成される稜線の内面同士を熱接着して形成される背面板側右側稜線熱接着部と、前記背面板の左側端と対向する前記折り込み板で形成される稜線の内面同士を熱接着して形成される背面板側左側稜線熱接着部とからなる四つの稜線熱接着部を有する筒状体となし、該筒状体の上端および下端をそれぞれ熱接着して天部熱接着部および底部熱接着部を形成すると共に、前記底部熱接着部から斜め上方に向けて前記上面板側右側稜線熱接着部に至る内面同士を熱接着して形成された上面板側右側底部形成用熱接着部と、前記底部熱接着部から斜め上方に向けて前記上面板側左側稜線熱接着部に至る内面同士を熱接着して形成された上面板側左側底部形成用熱接着部と、前記底部熱接着部から斜め上方に向けて前記背面板側右側稜線熱接着部に至る内面同士を熱接着して形成された背面板側右側底部形成用熱接着部と、前記底部熱接着部から斜め上方に向けて前記背面板側左側稜線熱接着部に至る内面同士を熱接着して形成された背面板側左側底部形成用熱接着部とからなる四つの底部形成用熱接着部を有するガセット袋において、前記上面板と前記折り込み板の前記底部熱接着部と前記上面板側右側稜線熱接着部と前記上面板側右側底部形成用熱接着部とにより形成された上面板側右側三角領域と、前記上面板と前記折り込み板の前記底部熱接着部と前記上面板側左側稜線熱接着部と前記上面板側左側底部形成用熱接着部とにより形成された上面板側左側三角領域と、前記背面板と前記折り込み板の前記底部熱接着部と前記背面板側右側稜線熱接着部と前記背面板側右側底部形成用熱接着部とにより形成された背面板側右側三角領域と、前記背面板と前記折り込み板の前記底部熱接着部と前記背面板側左側稜線熱接着部と前記背面板側左側底部形成用熱接着部とにより形成された背面板側左側三角領域とからなる４つの三角領域のうち、前記上面板側右側三角領域に上面板側右側折り曲げ手段が設けられており、前記上面板側左側三角領域に上面板側左側折り曲げ手段が設けられており、前記背面板側右側三角領域に背面板側右側折り曲げ手段が設けられており、前記背面板側左側三角領域に背面板側左側折り曲げ手段が設けられており、前記上面板側右側折り曲げ手段が、その一端が前記上面板側右側稜線熱接着部にまで達するものの前記上面板側右側稜線熱接着部の外端には達することがなく、その他端が前記上面板側右側底部形成用熱接着部の内端には達することがないミシン目であり、前記上面板側左側折り曲げ手段が、その一端が前記上面板側左側稜線熱接着部にまで達するものの前記上面板側左側稜線熱接着部の外端には達することがなく、その他端が前記上面板側左側底部形成用熱接着部の内端には達することがないミシン目であり、前記背面板側右側折り曲げ手段が、その一端が前記背面板側右側稜線熱接着部にまで達するものの前記背面板側右側稜線熱接着部の外端には達することがなく、その他端が前記背面板側右側底部形成用熱接着部の内端には達することがないミシン目であり、前記背面板側左側折り曲げ手段が、その一端が前記背面板側左側稜線熱接着部にまで達するものの前記背面板側左側稜線熱接着部の外端には達することがなく、その他端が前記背面板側左側底部形成用熱接着部の内端には達することがないミシン目であることを特徴とするものである。
【０００９】
また、請求項６に記載する発明は、請求項１〜５のいずれかに記載するガセット袋において、前記折り曲げ手段が少なくとも１条のミシン目であることを特徴とするものである。このように構成することにより、上面板、背面板、折り込み板で構成されるガセット袋の弾性（反発力）を殺すことができ、ガセット袋の底部を前記折り曲げ手段で前記折り曲げ手段を設けた側に折り曲げて容易に底部に平面部を形成することができ、自立安定性に優れたガセット袋とすることができる。
【００１０】
また、請求項７に記載する発明は、請求項１〜６のいずれかに記載のガセット袋において、前記折り曲げ手段が２条ないし３条のミシン目であって、条間隔が０．７〜３．０ｍｍであることを特徴とするものである。このように構成することにより、上面板、背面板、折り込み板で構成されるガセット袋の弾性（反発力）を一層殺すことができ、ガセット袋の底部を前記折り曲げ手段で尚一層容易に折り曲げることができるために、底部に平面部をさらに容易に形成することができる。
【００１１】
また、請求項８に記載する発明は、請求項１〜７のいずれかに記載するガセット袋において、前記天部熱接着部に注出具が熱接着により固着されていることを特徴とするものである。このように構成することにより、自立安定性に優れた注出具付きガセット袋とすることができ、特に液体や粘稠体といった内容物に適した注出具付きガセット袋とすることができる。
【００１２】
【発明の実施の形態】
上記の本発明について、図面等を用いて以下に詳しく説明する。
図１は本発明にかかる注出具付きガセット袋の一実施例を示す上面板側から見た平面図、図２は図１の背面板側から見た第１の実施形態を示す平面図、図３は図１に示す注出具付きガセット袋に内容物を充填して自立させた状態の底面から見た斜視図、図４は図１の背面板側から見た第２の実施形態を示す平面図であり、図中の１，１’は注出具付きガセット袋、２、2'は稜線熱接着部、３は天部熱接着部、４は底部熱接着部、５，5'は底部形成用熱接着部、６は保形手段、７，７’は折り曲げ手段、８は注出具、10は上面板、20は背面板、30は折り込み板、31は折部をそれぞれ示す。
【００１３】
図１は本発明にかかる注出具付きガセット袋の一実施例を示す上面板側から見た平面図、図２は図１の背面板側から見た第１の実施形態を示す平面図であって、注出具付きガセット袋１は上面板10と背面板20との間に断面略Ｖ字形状の２つの折り込み板30、30を前記２つの折り込み板30、30の折部31、31が対向するように挿設し、前記上面板10と前記背面板20と前記折り込み板30、30で形成される四つの稜線の内面同士を熱接着して稜線熱接着部２、２、2'、2'を有する筒状体となし、該筒状体の上端および下端を熱接着して天部熱接着部３および底部熱接着部４を形成すると共に、前記底部熱接着部４から斜め上方に向けて前記稜線熱接着部２、２、2'、2'に至る内面同士を三角形状に熱接着した底部形成用熱接着部５、５、5'、5'を形成し、かつ、前記上面板10側の前記稜線熱接着部２、２の前記底部形成用熱接着部５、５との交点近傍に切り込みからなる保形手段６、６を設けると共に前記背面板20側の前記稜線熱接着部2'、2'と前記折り込み板30、30の前記底部熱接着部４と前記底部形成用熱接着部5'、5'とにより形成された背面板20側三角領域に前記折り込み板30、30の前記折部31、31と直交する１条のミシン目からなる折り曲げ手段７、７を設け、さらに、前記天部熱接着部３に注出具８を熱接着により固着したものである。また、図示はしないが、前記注出具付きガセット袋１の角部は前記２つの折り込み板30、30に設けられた切欠部を介して前記上面板10と前記背面板20とが熱接着により固着されて四つの角部を形成している。
【００１４】
図３は図１に示す注出具付きガセット袋に内容物を充填して自立させた状態の底面から見た斜視図であって、注出具付きガセット袋１は図２に示した前記１条のミシン目からなる折り曲げ手段７、７で前記１条のミシン目からなる折り曲げ手段７、７を設けた側に折り曲げられると共に、図１に示した前記切り込みからなる保形手段６、６で底部に平面部が形成されるために容易に自立させることができる。
【００１５】
ところで、図１〜図３においては、前記折り曲げ手段７、７を１条のミシン目で示したが、これは一例を例示したものであって、これに限ることはなく、たとえば、直線状の切り込みであってもよいし、また、１条に限ることなく２条等の複数状からなっていてもよいし、また、矩形状や長穴状の切欠であってもよいし、さらには、矩形状や長穴状の未熱接着部であってもよく、要するに上面板、背面板、折り込み板で構成される注出具付きガセット袋１の弾性（反発力）を殺すことができる折り曲げ手段７、７はすべて本発明に含めれるものであるが、その一つの実施形態を図４に例示する。
【００１６】
図４は図１の背面板側から見た第２の実施形態を示す平面図であって、注出具付きガセット袋１’は、図２に示す第１の実施形態においては、１条のミシン目からなる折り曲げ手段７、７を設けたが、これに代えて条間隔を１．５ｍｍに設定した２条のミシン目からなる折り曲げ手段７’、７’を設けたものであり、これ以外は第１の実施形態と同じである。このように構成することにより、第１の実施形態に比べて上面板、背面板、折り込み板で構成されるガセット袋の弾性（反発力）を一層殺すことができ、ガセット袋の底部を前記折り曲げ手段７’、７’で尚一層容易に折り曲げることができる。ところで、条間隔を０．７〜３．０ｍｍとしたのは、条間が０．７ｍｍより狭くなると加工に支障を来し、３．０ｍｍより広くなるとそれぞれのミシン目が単独で存在するようになり、１条の場合と折り曲げ易さがかわらず、各条が互いに関連しあって折り曲げ易くなるという相乗効果が発揮されないためである。また、２ないし３条としたのは、これ以上条数を増やしても折り曲げ易さに差が生じないと共に、外観上好ましくないためである。
【００１７】
また、前記保形手段６、６についても切り込みに限ることはなく、たとえば、矩形状や長穴状の切欠であってもよいし、矩形状や長穴状の未熱接着部であってもよく、要するに上面板、背面板、折り込み板で構成される注出具付きガセット袋１の弾性（反発力）を殺すことができる保形手段６、６はすべて本発明に含めれるものである。
【００１８】
また、図１〜図４においては、前記折り曲げ手段７、７、および、７’、７’を、前記背面板20側の前記稜線熱接着部2'、2'と前記折り込み板30、30の前記底部熱接着部４と前記底部形成用熱接着部5'、5'とにより形成される前記背面板20側三角領域に設けたものを例示したが、前記上面板10側の前記稜線熱接着部２、２と前記折り込み板30、30の前記底部熱接着部４と前記底部形成用熱接着部５、５とにより形成される前記上面板10側三角領域にも設けて両方に設けた構成とすることもでき、また、前記保形手段６、６についても同様であって、前記上面板10側の前記稜線熱接着部２、２の前記底部形成用熱接着部５、５との交点近傍に設けたものを例示したが、これに限ることはなく、前記背面板20側の前記稜線熱接着部2'、2'の前記底部形成用熱接着部5'、5'との交点近傍にも設けて両方に設けた構成とすることもでき、このように両方の側に前記折り曲げ手段７、７、および、７’、７’と前記保形手段６、６とを設けた構成とする方が生産性の面ではより好ましい。また、図１〜図４において、前記底部形成用熱接着部５、５、5'、5'は三角形状としたが、図示はしないが帯状に熱接着したものであっても構わない。
【００１９】
次に、本発明の注出具付きガセット袋の製造方法の一例を説明する。
本発明の注出具付きガセット袋は、まず、周知のガセット袋製袋機を用いて、上端に開口部を有するガセット袋が製造される。その際、ガセット袋製袋機に周知のミシン目形成装置や切り込み形成装置が設置されて、前記折り曲げ手段７、７および前記保形手段６、６が形成されたガセット袋が製造される。その後に、ガセット袋の前記開口部に注出具（蓋体のない注出具）が挿入され、熱接着により注出具を開口部に固着すると同時に開口部が天部熱接着部３（図１参照）で密封され、前記注出具（蓋体のない注出具）の注出口から内容物が充填されると共に注出具に蓋体が前記注出具（蓋体のない注出具）に螺着されて、内容物を充填した注出具付きガセット袋を得ることができる。
【００２０】
なお、本発明のガセット袋および本発明の注出口付きガセット袋を製造する際のヒートシールの方法としては、たとえば、バーシール、回転ロールシール、ベルトシール、インパルスシール、高周波シール、超音波シール等の周知の方法で行うことができる。
【００２１】
次に、上記の本発明の注出具付きガセット袋を形成する前記上面板10、前記背面板20、前記２つの折り込み板30、30に用いる包装材について説明する。
前記注出具付きガセット袋１を形成する上面板10、背面板20、２つの折り込み板30、30に用いる包装材としては、いずれも内層が熱接着性樹脂層からなり、前記内層同士を熱と圧で熱接着できるものであれば、特に限定することなく用いることができ、それぞれの包装材が同じ構成からなる積層体で形成された注出具付きガセット袋であってもよいし、異なる構成からなる積層体で形成された注出具付きガセット袋であってもよい。
【００２２】
ところで、前記包装材の内層の熱接着性樹脂層を形成する樹脂としては、たとえば、低密度ポリエチレン、中密度ポリエチレン、高密度ポリエチレン、直鎖状（線状）低密度ポリエチレン、エチレンー酢酸ビニル共重合体、アイオノマー樹脂、エチレンーアクリル酸共重合体、エチレンーアクリル酸メチル共重合体、エチレンーメタクリル酸共重合体、ポリプロピレン、エチレンープロピレン共重合体等の樹脂の一種ないしそれ以上からなる樹脂ないしはこれらをフィルム化したシートを使用することができ、その厚さとしては、３０〜２００μｍが適当である。
【００２３】
また、前記包装材の外層としては、前記注出具付きガセット袋１を構成する基本素材となることから、機械的、物理的、化学的等において優れた性質を有する合成樹脂製フィルムを用いることができ、たとえば、ポリエステル系、ポリアミド系、ポリプロピレン系、ポリカーボネート系、ポリアセタール系等の樹脂からなるフィルムを用いることができ、これらのフィルムとしては、未延伸フィルムあるいは１軸方向または２軸方向に延伸した延伸フィルム等のいずれのものでも使用することができ、フィルムの厚さとしては基本基材としての強度、剛性などについて必要最低限に保持され得る厚さであればよく、コストなどを勘案して決めればよいが、通常１２〜２５μｍ程度が適当である。また、これらのフィルムは、必要に応じてポリ塩化ビニリデンが塗工されたフィルムやアルミニウムや酸化珪素、酸化アルミニウム、酸化インジウム、酸化錫、酸化ジルコニウム等の無機物の蒸着層が形成されたフィルムとしてバリアー性を有する構成としてもよい。また、前記外層として使用する合成樹脂製フィルムは、前記合成樹脂製フィルムの内層側に一般的には印刷が施されることが多いために、前記外層として使用する合成樹脂製フィルムは印刷適性が求められ、１軸方向または２軸方向に延伸した延伸フィルムが好適である。また、必要に応じて合成紙、セロハン、紙、あるいは、不織布等も適宜使用することができる。
【００２４】
また、本発明においては、前記内層と前記外層の間に中間層を設けてもよく、前記中間層は通常前記内層と前記外層だけではガセット袋としての機能を十分に果たすことができない場合等に設けられる。前記機能としては、気体遮断性、機械的強靱性、耐屈曲性、耐突き刺し性、耐衝撃性、耐磨耗性、耐寒性、耐熱性、耐薬品性等であり、ガセット袋として要求されるこれらの最終的な機能を前記中間層を設けることで達成するものである。前記中間層として用いられる基材としては、たとえば、アルミニウム、鉄、銅、錫等の金属箔、あるいは、ポリエチレンテレフタレート、ポリアミド、ポリエチレン、ポリプロピレン等のポリオレフィン、ポリ塩化ビニル、ポリカーボネート、ポリビニルアルコール、エチレンープロピレン共重合体、エチレンー酢酸ビニル共重合体ケン化物等のフィルムあるいはこれらにポリ塩化ビニリデンを塗工したフィルムないしはアルミニウムや酸化珪素、酸化アルミニウム、酸化インジウム、酸化錫、酸化ジルコニウム等の無機物の蒸着を施したフィルムあるいはポリ塩化ビニリデン等のフィルムなどを用いることができる。また、これら基材の一種ないしそれ以上を組み合わせて使用することができる。尚、上記基材の厚さとしては、ガセット袋として要求される機能を満たすことができればよいのであって、必要に応じて適宜選ぶことができる。
【００２５】
次に、本発明の注出具付きガセット袋に用いる注出具について説明する。まず、注出具（蓋体のない注出具）の形成方法としては、周知のインジェクション成形方法で形成することができる。前記注出具（蓋体のない注出具）に用いる材料としては、上記内層に用いる熱接着性樹脂層と熱によって溶融し相互に融着し得るものであればよく、上記内層に用いる樹脂により選択する必要があるが、たとえば、低密度ポリエチレン、中密度ポリエチレン、高密度ポリエチレン、直鎖状（線状）低密度ポリエチレン、ポリプロピレン、エチレンー酢酸ビニル共重合体、アイオノマー樹脂、エチレンーアクリル酸共重合体、エチレンーアクリル酸メチル共重合体、エチレンーメタクリル酸共重合体、エチレンープロピレン共重合体などを挙げることができる。また、前記注出具（蓋体のない注出具）は必要に応じて顔料等で着色されていてもよい。
【００２６】
また、前記注出具（蓋体のない注出具）のガセット袋の外側に突出した外周に設けられた螺子部に螺着する蓋体についても周知のインジェクション成形方法で形成することができる。これに用いる材料としては、たとえば、ポリエチレン、ポリプロピレン、ポリスチレン、エチレンープロピレン共重合体、アクリロニトリルースチレンーブタジエン重合体、あるいは、他の半剛性ないし剛性の合成樹脂などを挙げることができる。当然、前記蓋体も必要に応じて顔料等で着色されていてもよい。また、前記蓋体には必要に応じて、ピルファプルーフ機能をもたせたものであっても構わない。
【００２７】
また、今まで注出具付きガセット袋で説明してきたが、当然のことながら注出具を具備しない普通のガセット袋に適用することもできる。
【００２８】
【発明の効果】
本発明は、今まで縷々説明したように、上面板と折り込み板の底部熱接着部と稜線熱接着部と底部形成用熱接着部とにより形成された上面板側三角領域、ないし、背面板と折り込み板の底部熱接着部と稜線熱接着部と底部形成用熱接着部とにより形成された背面板側三角領域の少なくとも一方の側の前記三角領域に折り曲げ手段を設けることにより、自立安定性に優れたガセット袋及び注出具付きガセット袋を提供することができるという効果を奏するものである。さらに、上面板と折り込み板とにより形成される上面板側の稜線熱接着部、ないし、背面板と折り込み板とにより形成される背面板側の稜線熱接着部の少なくとも一方の側の前記稜線熱接着部の底部形成用熱接着部との交点近傍に保形手段を設けることにより、一層自立安定性に優れたガセット袋及び注出具付きガセット袋を提供することができるという効果を奏するものである。
【図面の簡単な説明】
【図１】本発明にかかる注出具付きガセット袋の一実施例を示す上面板側から見た平面図である。
【図２】図１の背面板側から見た第１の実施形態を示す平面図である。
【図３】図１に示す注出具付きガセット袋に内容物を充填して自立させた状態の底面から見た斜視図である。
【図４】図１の背面板側から見た第２の実施形態を示す平面図である。
【符号の説明】
１，１’ 注出具付きガセット袋
２、2' 稜線熱接着部
３天部熱接着部
４底部熱接着部
５，5' 底部形成用熱接着部
６保形手段
７，７’ 折り曲げ手段
８注出具
10 上面板
20 背面板
30 折り込み板
31 折部[0001]
BACKGROUND OF THE INVENTION
The present invention provides a gusset bag excellent in self-supporting stability and a self-supporting stability in which a pouring tool is attached to the gusset bag when contents such as liquids, viscous materials, powders and granules are stored and self-supporting. It relates to a gusseted bag with an excellent dispensing tool.
[0002]
[Prior art]
Conventionally, as a self-supporting packaging bag capable of storing contents and becoming self-supporting, a standing pouch, a square bottom bag, or a gusset type packaging bag which becomes a square bottom when storing contents is generally well known. ing. All of these self-supporting packaging bags are configured so that a flat portion is formed at the bottom of the packaging bag, so they can be placed upright, compared to when they are placed flat at the time of sale, etc. As the number of displays per unit space increases, the appeal to customers increases, and during use, the contents can be taken out by opening the opening in an upright position, so it is not transferred to another container. Since it can be used as it is, it is excellent in convenience, so it is applied to various products. However, in the case of a gusset type packaging bag in which a flat portion is formed at the bottom of the packaging bag when the contents are stored, the type and amount (capacity and weight) of the contents or the gusset type packaging Some types were difficult to stand by depending on the material composition of the bag.
[0003]
[Problems to be solved by the invention]
Accordingly, the present invention has been made in view of the above problems, and the object of the present invention is to provide a gusset bag that can easily form a flat portion at the bottom when the contents are stored and has significantly improved self-supporting stability. Another object of the present invention is to provide a gusset bag with a pouring tool excellent in self-supporting stability in which the pouring tool is attached to the gusset bag.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the inventors of the present invention set forth the invention described in claim 1 so that the folded portions of two folding plates having a substantially V-shaped cross section face each other between the top plate and the back plate. Inserting and thermally bonding the inner surfaces of the four ridge lines formed by the top plate, the back plate and the folding plate to form a cylindrical body having a ridge line thermal bonding portion, the upper end and the lower end of the cylindrical body The bottom part formed by thermally bonding the inner surfaces from the bottom thermal adhesive part to the ridge line thermal adhesive part diagonally upward from the bottom thermal adhesive part In the gusset bag having the thermal bonding portion for forming, the upper surface plate side triangular region formed by the upper surface plate, the bottom thermal bonding portion of the folding plate, the ridgeline thermal bonding portion, and the bottom forming thermal bonding portion, or The bottom thermal bonding part of the back plate and the folding plate Is provided folded means to the triangular region of at least one side of the ridge heat-bonding part and formed by the said bottom forming heat-bonded portion was back plate side Triangle The bending means has one end reaching the ridgeline thermal bonding portion, but does not reach the outer end of the ridgeline thermal bonding portion, and the other end reaches the inner end of the bottom forming thermal bonding portion. There is no perforation It is characterized by this.
[0005]
The invention described in claim 2 Four ridge lines formed by the top plate, the back plate, and the folding plate are inserted between the top plate and the back plate so that the folded portions of the two folded plates having a substantially V-shaped cross section are opposed to each other. The inner surface is thermally bonded to form a cylindrical body having a ridge line thermal bonding portion, and the upper end and the lower end of the cylindrical body are thermally bonded to form a top thermal bonding portion and a bottom thermal bonding portion, and the bottom portion In the gusset bag having a bottom-forming heat-bonding portion formed by heat-bonding the inner surfaces reaching the ridge-line heat-bonding portion obliquely upward from the heat-bonding portion, the bottom-surface heat bonding of the top plate and the folding plate A top plate side triangular region formed by a portion, the ridgeline thermal bonding portion and the bottom forming thermal bonding portion, and the bottom thermal bonding portion, the ridgeline thermal bonding portion and the bottom portion of the back plate and the folding plate. Back plate side formed by thermal bonding part for forming Bending means are provided in the triangular area on both sides of the corner area, and the bending means does not reach the outer end of the ridgeline thermal bonding part although one end thereof reaches the ridgeline thermal bonding part. The other end is a perforation that does not reach the inner end of the bottom forming thermal bonding portion. It is characterized by this.
[0006]
According to a third aspect of the present invention, two folding plates having a substantially V-shaped cross section are inserted between the top plate and the back plate so that the folding portions of the two folding plates face each other. Formed with the top plate side right ridge line heat bonding part formed by heat bonding the inner surfaces of the ridge lines formed by the folding plate facing the right end of the face plate, and the folding plate facing the left end of the top plate. The inner surface of the ridge line formed by the top plate side left ridge line thermal bonding portion formed by thermally bonding the inner surfaces of the ridge line to be formed and the folding plate facing the right end of the back plate is formed by thermal bonding. And a back plate side left side ridge line heat bonding portion formed by heat bonding the inner surfaces of the ridge line formed by the folding plate facing the left end of the back plate side. A cylindrical body having four ridge line thermal bonding portions, and the cylindrical body The top and bottom heat-bonding portions and bottom heat-bonding portions are formed by heat-bonding the end and the bottom, respectively, and the inner surfaces from the bottom heat-bonding portion to the upper surface plate side right-side ridge line heat-bonding portion are heat-treated. The upper surface plate side right bottom portion forming heat bonding portion formed by bonding and the inner surface reaching the upper surface plate side left ridge line heat bonding portion obliquely upward from the bottom portion heat bonding portion were formed by heat bonding. A heat bonding part for forming a left side bottom part on the top plate side, and a back plate side right side bottom part formed by heat bonding the inner surfaces from the bottom heat bonding part to the back plate side right ridge line heat bonding part obliquely upward. And a back plate side left bottom forming thermal bond portion formed by heat bonding the inner surfaces from the bottom heat bond portion to the back plate side left ridge line heat bond portion obliquely upward from the bottom heat bond portion. Gusset bag having four bottom-forming thermal bonding parts The upper surface plate side right triangular region formed by the upper surface plate, the bottom thermal bonding portion of the folding plate, the upper surface plate side right ridge line thermal bonding portion, and the upper surface plate side right bottom portion forming thermal bonding portion; The upper surface plate side left triangular region formed by the upper surface plate and the bottom plate thermal bonding portion of the folding plate, the upper surface plate side left ridge line thermal bonding portion and the upper surface plate side left bottom portion forming thermal bonding portion, The back plate side right triangular region formed by the back plate, the bottom thermal bonding portion of the folding plate, the back plate side right ridge line thermal bonding portion, and the back plate side right bottom forming thermal bonding portion, and the back plate And the back plate side left side triangular region formed by the back plate side left side ridge line heat bond portion and the back plate side left side bottom forming thermal bond portion Of which the upper surface plate side right triangle The upper surface plate side right side bending means is provided in the upper surface plate side left side triangular region, and the upper surface plate side right side bending means has one end at the upper surface plate side. Although it reaches the right ridge line thermal bonding portion, it does not reach the outer end of the upper surface plate side right ridge line thermal bonding portion, and the other end can reach the inner end of the upper surface plate side right bottom portion thermal bonding portion. There is no perforation, and the upper surface plate side left side bending means does not reach the outer end of the upper surface plate side left ridge line thermal bonding portion, although one end thereof reaches the upper surface plate side left ridge line thermal bonding portion, The other end is a perforation that does not reach the inner end of the upper-surface plate-side left bottom forming thermal bonding portion. .
[0007]
Claims 4 The invention described in Two folding plates having a substantially V-shaped cross section are inserted between the top plate and the back plate so that the folding portions of the two folding plates face each other, and the folding plate facing the right end of the top plate The upper surface plate side right ridge line heat bonding part formed by heat bonding the inner surfaces of the ridge lines to be formed and the inner surface of the ridge line formed by the folding plate facing the left end of the upper surface plate are thermally bonded. A top plate side left side ridge line thermal bonding portion to be formed, and a back plate side right side ridge line thermal bonding portion formed by thermally bonding the inner surfaces of the ridge line formed by the folding plate facing the right end of the back plate; A cylindrical shape having four ridge line thermal bonding portions formed of a back plate side left ridge line thermal bonding portion formed by thermally bonding the inner surfaces of the ridge lines formed by the folding plate facing the left end of the back plate. The body and the upper and lower ends of the cylindrical body The top plate side formed by thermally bonding the inner surfaces from the bottom thermal bonding portion to the upper surface plate side right ridge line thermal bonding portion while forming the top thermal bonding portion and the bottom thermal bonding portion. Thermal bonding part for forming the right side bottom part and thermal bonding for forming the left side bottom part on the upper plate side formed by thermally bonding the inner surfaces from the bottom thermal bonding part to the upper side plate side left ridge line thermal bonding part obliquely upward. And a back plate side right bottom forming thermal bonding portion formed by thermally bonding the inner surfaces from the bottom thermal bonding portion obliquely upward to the back plate side right ridge line thermal bonding portion, and the bottom heat Four bottom-forming heat-bonding portions comprising a back-plate-side left-side bottom-forming heat-bonding portion formed by thermally bonding the inner surfaces from the bonding portion to the back-plate-side left-side ridge line heat-bonding portion obliquely upward. In the gusset bag, the top plate and the folding An upper surface plate side right triangular region formed by the bottom heat bonding portion of the plate, the upper surface plate side right ridge line heat bonding portion, and the upper surface plate side right bottom portion forming thermal bonding portion, and the upper surface plate and the folding plate The bottom plate side left triangular region formed by the bottom heat bonding portion, the top plate side left ridge heat bonding portion, and the top plate side left bottom forming thermal bonding portion, and the bottom portion of the back plate and the folding plate. The back plate side right triangle region formed by the heat bond portion, the back plate side right ridge line heat bond portion, and the back plate side right bottom forming thermal bond portion, and the bottom heat bond of the back plate and the folding plate Among the four triangular regions formed by the back plate side left side triangular region formed by the back plate side left side ridge line thermal bonding part and the back plate side left side bottom forming thermal bonding part. Back plate side right side bending means is installed in the area. The back plate side left side bending means is provided in the back plate side left triangle region, and the back plate side right side bending means has one end reaching the back plate side right side ridge line thermal bonding part. The rear plate is a perforation that does not reach the outer end of the right side ridge line thermal bonding portion on the back plate side, and the other end does not reach the inner end of the thermal bonding portion for forming the right side bottom portion on the back plate side, The side left side bending means has one end reaching the back plate side left side ridge line thermal bonding portion, but does not reach the outer end of the back plate side left side ridge line thermal bond portion, and the other end is the back plate side left bottom portion. A perforation that does not reach the inner end of the heat-bonding portion for forming .
[0008]
Claims 5 The invention described in Two folding plates having a substantially V-shaped cross section are inserted between the top plate and the back plate so that the folding portions of the two folding plates face each other, and the folding plate facing the right end of the top plate The upper surface plate side right ridge line heat bonding part formed by heat bonding the inner surfaces of the ridge lines to be formed and the inner surface of the ridge line formed by the folding plate facing the left end of the upper surface plate are thermally bonded. A top plate side left side ridge line thermal bonding portion to be formed, and a back plate side right side ridge line thermal bonding portion formed by thermally bonding the inner surfaces of the ridge line formed by the folding plate facing the right end of the back plate; A cylindrical shape having four ridge line thermal bonding portions formed of a back plate side left ridge line thermal bonding portion formed by thermally bonding the inner surfaces of the ridge lines formed by the folding plate facing the left end of the back plate. The body and the upper and lower ends of the cylindrical body The top plate side formed by thermally bonding the inner surfaces from the bottom thermal bonding portion to the upper surface plate side right ridge line thermal bonding portion while forming the top thermal bonding portion and the bottom thermal bonding portion. Thermal bonding part for forming the right side bottom part and thermal bonding for forming the left side bottom part on the upper plate side formed by thermally bonding the inner surfaces from the bottom thermal bonding part to the upper side plate side left ridge line thermal bonding part obliquely upward. And a back plate side right bottom forming thermal bonding portion formed by thermally bonding the inner surfaces from the bottom thermal bonding portion obliquely upward to the back plate side right ridge line thermal bonding portion, and the bottom heat Four bottom-forming heat-bonding portions comprising a back-plate-side left-side bottom-forming heat-bonding portion formed by thermally bonding the inner surfaces from the bonding portion to the back-plate-side left-side ridge line heat-bonding portion obliquely upward. In the gusset bag, the top plate and the folding An upper surface plate side right triangular region formed by the bottom heat bonding portion of the plate, the upper surface plate side right ridge line heat bonding portion, and the upper surface plate side right bottom portion forming thermal bonding portion, and the upper surface plate and the folding plate The bottom plate side left triangular region formed by the bottom heat bonding portion, the top plate side left ridge heat bonding portion, and the top plate side left bottom forming thermal bonding portion, and the bottom portion of the back plate and the folding plate. The back plate side right triangle region formed by the heat bond portion, the back plate side right ridge line heat bond portion, and the back plate side right bottom forming thermal bond portion, and the bottom heat bond of the back plate and the folding plate Of the back plate side left side ridge line thermal bonding portion and the back plate side left side bottom forming thermal bonding portion, the top plate side right triangle The upper plate side right side bending means is installed in the area. A top plate side left side bending means is provided in the top side plate side left triangle region, a back plate side right side bending means is provided in the back plate side right triangle region, and the back plate side left side A back plate side left side bending means is provided in the triangular area, and the top plate side right side bending means has one end reaching the top plate side right ridge line thermal bonding part, but the top plate side right ridge line thermal bonding part. A perforation that does not reach the outer end and the other end does not reach the inner end of the upper surface plate side right bottom forming thermal bonding portion. Although it reaches the upper surface plate side left ridge line heat bonding portion, it does not reach the outer end of the upper surface plate side left ridge line heat bonding portion, and the other end is on the inner end of the upper surface plate side left bottom portion heat bonding portion. Misi never reach The back plate side right side bending means has one end reaching the back plate side right side ridge line thermal bonding portion, but does not reach the outer end of the back plate side right side ridge line thermal bonding portion, and the other end. Is a perforation that does not reach the inner end of the back plate side right bottom forming thermal bonding portion, and the back plate side left side bending means has one end reaching the back plate side left ridge line thermal bonding portion Although it does not reach the outer end of the back plate side left ridge line thermal bonding portion, the other end is a perforation that does not reach the inner end of the back plate side left bottom forming thermal bonding portion. It is characterized by this.
[0009]
Claims 6 The invention described in Any one of claims 1-5 In the gusset bag described in The bending means is at least one perforation. It is characterized by this. By comprising in this way, the elasticity (repulsive force) of the gusset bag which consists of a top plate, a back plate, and a folding plate can be killed, and the bottom of the gusset bag is provided on the side where the folding means is provided. Can be easily folded to form a flat portion at the bottom, and a gusset bag with excellent self-standing stability can be obtained. .
[0010]
The invention described in claim 7 is the gusset bag according to any one of claims 1 to 6, wherein the bending means is a perforation of 2 or 3 threads, and the interval between the stripes is 0.7 to 3. .0 mm . By comprising in this way, the elasticity (repulsive force) of the gusset bag which consists of an upper surface board, a back surface board, and a folding board can be killed further, and the bottom part of a gusset bag can be folded still more easily by the said bending means. Therefore, it is possible to more easily form a flat portion at the bottom. .
[0011]
Claims 8 The invention described in claims 1 to 7 In the gusset bag described in any one of the above, a pouring tool is fixed to the top thermal bonding portion by thermal bonding. By comprising in this way, it can be set as the gusset bag with the extraction tool excellent in self-supporting stability, and can be set as the gusset bag with the extraction tool especially suitable for contents, such as a liquid and a viscous body.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail below with reference to the drawings.
FIG. 1 is a plan view of an embodiment of the gusset bag with a dispensing tool according to the present invention as seen from the top plate side, and FIG. 2 is a plan view of the first embodiment as seen from the back plate side of FIG. 3 is a perspective view seen from the bottom surface in a state where the gusseted bag with the dispensing tool shown in FIG. 1 is filled with the contents and is self-supporting, and FIG. 4 is a plan view showing the second embodiment seen from the back plate side of FIG. In the figure, 1, 1 'is a gusseted bag with a pouring tool, 2, 2' is a ridge-line thermal bonding part, 3 is a top thermal bonding part, 4 is a bottom thermal bonding part, and 5, 5 'is a bottom part. Thermal bonding portion for use, 6 is a shape-retaining means, 7 and 7 'are bending means, 8 is a pouring tool, 10 is a top plate, 20 is a back plate, 30 is a folding plate, and 31 is a folding portion.
[0013]
FIG. 1 is a plan view of an embodiment of the gusset bag with a dispensing tool according to the present invention as seen from the top plate side, and FIG. 2 is a plan view of the first embodiment as seen from the back plate side of FIG. In the gusset bag 1 with a pouring tool, the two folding plates 30 and 30 having a substantially V-shaped cross section are opposed to the folding plates 31 and 31 of the two folding plates 30 and 30 between the top plate 10 and the back plate 20. The inner surfaces of the four ridge lines formed by the top plate 10, the back plate 20, and the folding plates 30, 30 are thermally bonded to each other, and the ridge line heat bonding portions 2, 2, 2 ', 2 And forming the top thermal bonding part 3 and the bottom thermal bonding part 4 and obliquely upward from the bottom thermal bonding part 4 And forming the bottom-forming heat-bonding portions 5, 5, 5 ', 5' by thermally bonding the inner surfaces leading to the ridge-line heat-bonding portions 2, 2, 2 ', 2' in a triangular shape, and the front In the vicinity of the intersection of the ridgeline thermal bonding portions 2 and 2 on the top plate 10 side with the bottom forming thermal bonding portions 5 and 5, there are provided shape-retaining means 6 and 6 made of cuts and the ridgeline heat on the back plate 20 side The folding plate 30 is formed in a triangular region on the back plate 20 side formed by the bonding portions 2 ′, 2 ′ and the bottom thermal bonding portion 4 of the folding plates 30, 30 and the bottom forming thermal bonding portions 5 ′, 5 ′. , 30 are provided with bending means 7, 7 composed of a single perforation perpendicular to the folding parts 31, 31, and the pouring tool 8 is fixed to the top thermal bonding part 3 by thermal bonding. In addition, although not shown, the top plate 10 and the back plate 20 are fixed to each other at the corners of the gusset bag 1 with the pouring tool by thermal bonding via notches provided in the two folding plates 30 and 30. To form four corners.
[0014]
FIG. 3 is a perspective view of the gusseted bag with a pour tool shown in FIG. 1 as seen from the bottom in a state where the gusset bag with a pour tool is filled and self-supported. Bending means 7, 7 made of perforations are folded to the side where the first perforating means 7, 7 are provided, and at the bottom by shape-retaining means 6, 6 made of the notches shown in FIG. Since the flat portion is formed, it can be easily made independent.
[0015]
By the way, in FIGS. 1-3, although the said bending means 7 and 7 were shown by the 1st perforation, this is an example and is not restricted to this, For example, linear shape is shown. It may be a notch, may be composed of a plurality of shapes such as two without being limited to one, may be a rectangular or slot-like notch, The bending means 7 may be a non-heat bonded portion having a rectangular shape or a long hole shape. In short, the bending means 7 can kill the elasticity (repulsive force) of the gusset bag 1 with a pouring tool composed of a top plate, a back plate, and a folding plate. 7 are included in the present invention, and one embodiment thereof is illustrated in FIG.
[0016]
FIG. 4 is a plan view showing the second embodiment as viewed from the back plate side of FIG. 1, and the gusset bag 1 'with a dispensing tool is a single sewing machine in the first embodiment shown in FIG. Bending means 7 and 7 made of eyes are provided, but in place of this, bending means 7 'and 7' made of two perforations with the interval between the stripes set to 1.5 mm are provided. The same as in the first embodiment. By comprising in this way, the elasticity (repulsive force) of the gusset bag comprised of a top plate, a back plate, and a folding plate can be further killed compared to the first embodiment, and the bottom of the gusset bag is bent. The means 7 ', 7' can be folded even more easily. By the way, the interval between the stripes is set to 0.7 to 3.0 mm, because when the interval is narrower than 0.7 mm, the processing is hindered. When the interval is larger than 3.0 mm, each perforation exists independently. This is because the easiness of bending is not different from the case of one line, and the synergistic effect that the lines are related to each other and become easy to bend is not exhibited. Further, the reason why the number of strips is set to 2 or 3 is that even if the number of strips is further increased, there is no difference in the easiness of bending and the appearance is not preferable.
[0017]
Further, the shape-retaining means 6 and 6 are not limited to cutting, and may be, for example, rectangular or slot-shaped notches, or rectangular or slot-shaped unheated bonded portions. In short, all of the shape retaining means 6 and 6 capable of killing the elasticity (repulsive force) of the gusset bag 1 with the pouring tool composed of the top plate, the back plate, and the folding plate are all included in the present invention.
[0018]
1 to 4, the folding means 7, 7, 7 ′, 7 ′ are connected to the ridge line heat bonding portions 2 ′, 2 ′ on the back plate 20 side and the folding plates 30, 30. Although the example provided in the triangular region on the back plate 20 side formed by the bottom portion heat bonding portion 4 and the bottom portion forming heat bonding portions 5 ′ and 5 ′, the ridge line heat bonding on the top plate 10 side is illustrated. And also provided in both of the triangular regions on the top plate 10 side formed by the bottom thermal bonding portion 4 and the bottom forming thermal bonding portions 5 and 5 of the folding portions 30 and 30 and the folding plates 30 and 30. The same holds for the shape-retaining means 6, 6, and the intersection of the ridge line heat-bonding portions 2, 2 on the top plate 10 side with the bottom-forming heat-bonding portions 5, 5. Exemplified those provided in the vicinity, but is not limited thereto, the ridgeline thermal bonding portions 2 ', 2' on the back plate 20 side, the bottom portion thermal bonding It is also possible to adopt a configuration in which both are provided in the vicinity of the intersection with the portions 5 ′ and 5 ′, and the folding means 7 and 7 and 7 ′ and 7 ′ and the shape-retaining shape are provided on both sides in this way. It is more preferable in terms of productivity that the means 6 and 6 are provided. 1 to 4, the bottom forming thermal bonding portions 5, 5, 5 ′, and 5 ′ have a triangular shape, but they may be thermally bonded in a band shape although not shown.
[0019]
Next, an example of the manufacturing method of the gusset bag with the extraction tool of this invention is demonstrated.
As for the gusset bag with the dispensing tool of the present invention, first, a gusset bag having an opening at the upper end is manufactured using a known gusset bag making machine. At that time, a well-known perforation forming device and a notch forming device are installed in the gusset bag making machine, and a gusset bag in which the bending means 7 and 7 and the shape retaining means 6 and 6 are formed is manufactured. Thereafter, a pouring tool (pouring tool without a lid) is inserted into the opening of the gusset bag, and the pouring tool is fixed to the opening by thermal bonding, and at the same time, the opening is the top heat bonding portion 3 (see FIG. 1). The contents are filled from the spout of the pouring tool (pour tool without a lid), and the lid is screwed to the pour tool (pour tool without a lid). A gusset bag with a pouring tool filled with an object can be obtained.
[0020]
In addition, as a heat sealing method when manufacturing the gusset bag of the present invention and the gusset bag with a spout of the present invention, for example, a bar seal, a rotary roll seal, a belt seal, an impulse seal, a high frequency seal, an ultrasonic seal, etc. It can carry out by the well-known method.
[0021]
Next, the packaging material used for the top plate 10, the back plate 20, and the two folding plates 30 and 30 that form the gusset bag with the dispensing tool of the present invention will be described.
As a packaging material used for the top plate 10, the back plate 20, and the two folding plates 30, 30 forming the gusset bag 1 with the pouring tool, the inner layer is composed of a heat-adhesive resin layer, and the inner layers are heated. As long as it can be thermally bonded with pressure, it can be used without any particular limitation, and each packaging material may be a gusseted bag with a pouring tool formed of a laminate having the same configuration, or from a different configuration It may be a gusseted bag with a pouring tool formed of a laminate.
[0022]
By the way, as the resin forming the heat-adhesive resin layer of the inner layer of the packaging material, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, ethylene-vinyl acetate copolymer Resin consisting of one or more resins such as polymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, polypropylene, ethylene-propylene copolymer, or A sheet in which these are formed can be used, and a thickness of 30 to 200 μm is appropriate.
[0023]
Moreover, since it becomes a basic material which comprises the said gusset bag 1 with a pouring tool as an outer layer of the said packaging material, using the synthetic resin film which has the property excellent in mechanical, physical, chemical, etc. is used. For example, a film made of a resin such as polyester, polyamide, polypropylene, polycarbonate, or polyacetal can be used. These films may be unstretched films or stretched in a uniaxial or biaxial direction. Any film such as a stretched film can be used, and the thickness of the film may be a thickness that can be kept to the minimum necessary for strength, rigidity, etc. as a basic substrate, taking into account costs and the like Although it may be decided, about 12 to 25 μm is usually appropriate. In addition, these films are barrier films as films coated with polyvinylidene chloride as necessary, and films with an inorganic vapor deposition layer such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, zirconium oxide formed thereon. It is good also as a structure which has property. Further, since the synthetic resin film used as the outer layer is generally printed on the inner layer side of the synthetic resin film, the synthetic resin film used as the outer layer has printability. A stretched film that is required and stretched in a uniaxial direction or a biaxial direction is suitable. In addition, synthetic paper, cellophane, paper, non-woven fabric, or the like can be appropriately used as necessary.
[0024]
Further, in the present invention, an intermediate layer may be provided between the inner layer and the outer layer, and the intermediate layer is usually used only when the inner layer and the outer layer cannot sufficiently function as a gusset bag. Provided. The functions include gas barrier properties, mechanical toughness, flex resistance, puncture resistance, impact resistance, wear resistance, cold resistance, heat resistance, chemical resistance, etc., which are required as gusset bags. These final functions are achieved by providing the intermediate layer. Examples of the base material used as the intermediate layer include metal foils such as aluminum, iron, copper, and tin, polyolefins such as polyethylene terephthalate, polyamide, polyethylene, and polypropylene, polyvinyl chloride, polycarbonate, polyvinyl alcohol, and ethylene- Films of saponified propylene copolymer, ethylene-vinyl acetate copolymer, etc. or films coated with polyvinylidene chloride on these films or inorganic materials such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, zirconium oxide, etc. An applied film or a film of polyvinylidene chloride or the like can be used. One or more of these substrates can be used in combination. The thickness of the base material only needs to satisfy the function required for the gusset bag, and can be appropriately selected as necessary.
[0025]
Next, the pouring tool used for the gusset bag with the pouring tool of the present invention will be described. First, as a method for forming the pouring tool (pouring tool without a lid), it can be formed by a well-known injection molding method. The material used for the pouring tool (pouring tool without a lid) may be any material that can be melted by heat and fused with the heat-adhesive resin layer used for the inner layer, and is selected according to the resin used for the inner layer. For example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer , Ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, and the like. Moreover, the said extraction tool (extraction tool without a cover body) may be colored with the pigment etc. as needed.
[0026]
Further, a lid that is screwed onto a screw portion provided on the outer periphery of the pouring tool (pouring tool without a lid) protruding outside the gusset bag can also be formed by a well-known injection molding method. Examples of the material used for this include polyethylene, polypropylene, polystyrene, ethylene-propylene copolymer, acrylonitrile-styrene-butadiene polymer, and other semi-rigid or rigid synthetic resins. Of course, the lid may be colored with a pigment or the like as required. In addition, the lid body may be provided with a pill fuffproof function as necessary.
[0027]
Further, although the gusset bag with a pouring tool has been described so far, it can be naturally applied to an ordinary gusset bag that does not include the pouring tool.
[0028]
【The invention's effect】
As described above, the present invention is, as described above, the upper surface plate side triangular region formed by the upper surface plate, the bottom heat bonding portion of the folding plate, the ridge line heat bonding portion, and the bottom forming heat bonding portion, or the back plate. By providing folding means in the triangular region on at least one side of the triangular region on the back plate side formed by the bottom thermal bonding portion, the ridge line thermal bonding portion and the bottom forming thermal bonding portion of the folding plate, self-supporting stability is achieved. The effect that the outstanding gusset bag and the gusset bag with a pouring tool can be provided is produced. Further, the ridge line heat bonding portion on the upper surface plate side formed by the upper surface plate and the folding plate, or the ridge line heat bonding on at least one side of the ridge line heat bonding portion on the rear plate side formed by the back plate and the folding plate. By providing a shape-retaining means in the vicinity of the intersection of the adhesive portion with the heat forming portion for forming the bottom portion, there is an effect that it is possible to provide a gusset bag and a gusset bag with a pouring tool that are more excellent in self-supporting stability. .
[Brief description of the drawings]
FIG. 1 is a plan view seen from the top plate side showing an embodiment of a gusset bag with a dispensing tool according to the present invention.
FIG. 2 is a plan view showing the first embodiment as viewed from the back plate side of FIG.
3 is a perspective view seen from the bottom in a state where the gusseted bag with a dispensing tool shown in FIG.
4 is a plan view showing a second embodiment viewed from the back plate side of FIG. 1. FIG.
[Explanation of symbols]
1,1 'gusseted bag with dispenser
2, 2 'Ridge line thermal bonding part
3 Top heat bonding part
4 Bottom heat bonding part
5,5 'Thermal bonding part for bottom formation
6 Shape retention means
7,7 'Bending means
8 pouring tool
10 Top plate
20 Back plate
30 Folding plate
31 Folding

Claims

Four ridge lines formed by the top plate, the back plate, and the folding plate are inserted between the top plate and the back plate so that the folded portions of the two folded plates having a substantially V-shaped cross section are opposed to each other. The inner surface is thermally bonded to form a cylindrical body having a ridge line thermal bonding portion, and the upper end and the lower end of the cylindrical body are thermally bonded to form a top thermal bonding portion and a bottom thermal bonding portion, and the bottom portion In the gusset bag having a bottom-forming heat-bonding portion formed by heat-bonding the inner surfaces reaching the ridge-line heat-bonding portion obliquely upward from the heat-bonding portion, the bottom-surface heat bonding of the top plate and the folding plate An upper plate side triangular region formed by a portion, the ridgeline thermal bonding portion, and the bottom forming thermal bonding portion, or the bottom thermal bonding portion, the ridgeline thermal bonding portion, and the bottom portion of the back plate and the folding plate. Back plate formed by thermal bonding part for forming Said at least one side of the triangular area is provided with bending member in a triangular area, the folding means, that the one end reaches the outer end of the ridge line thermal bonding portion of those reaching the ridge heat-bonding portion The gusset bag is characterized in that the other end is a perforation that does not reach the inner end of the bottom forming thermal bonding portion .

Four ridge lines formed by the top plate, the back plate, and the folding plate are inserted between the top plate and the back plate so that the folded portions of the two folded plates having a substantially V-shaped cross section are opposed to each other. The inner surface is thermally bonded to form a cylindrical body having a ridge line thermal bonding portion, and the upper end and the lower end of the cylindrical body are thermally bonded to form a top thermal bonding portion and a bottom thermal bonding portion, and the bottom portion In the gusset bag having a bottom-forming heat-bonding portion formed by heat-bonding the inner surfaces reaching the ridge-line heat-bonding portion obliquely upward from the heat-bonding portion, the bottom-surface heat bonding of the top plate and the folding plate A top plate side triangular region formed by a portion, the ridgeline thermal bonding portion and the bottom forming thermal bonding portion, and the bottom thermal bonding portion, the ridgeline thermal bonding portion and the bottom portion of the back plate and the folding plate. Back plate side formed by thermal bonding part for forming Wherein both sides of the corner regions is provided with bending member in a triangular area, the folding means, without reaching the outer end of the ridge line thermal bonding portion of which one end reaches the ridge heat-bonding portion The gusset bag is characterized in that the other end is a perforation that does not reach the inner end of the bottom portion forming thermal bonding portion .

Two folding plates having a substantially V-shaped cross section are inserted between the top plate and the back plate so that the folding portions of the two folding plates face each other, and the folding plate facing the right end of the top plate The upper surface plate side right ridge line heat bonding part formed by heat bonding the inner surfaces of the ridge lines to be formed and the inner surface of the ridge line formed by the folding plate facing the left end of the upper surface plate are thermally bonded. A top plate side left side ridge line thermal bonding portion to be formed, and a back plate side right side ridge line thermal bonding portion formed by thermally bonding the inner surfaces of the ridge line formed by the folding plate facing the right end of the back plate; A cylindrical shape having four ridge line thermal bonding portions formed of a back plate side left ridge line thermal bonding portion formed by thermally bonding the inner surfaces of the ridge lines formed by the folding plate facing the left end of the back plate. The body and the upper and lower ends of the cylindrical body To form a top portion heat-bonded and bottom heat-bonded portion, said bottom heat from the adhesive portion of the inner surfaces leading to said upper plate side right ridge heat seal portion obliquely upward is formed by thermally bonding the top plate side Thermal bonding part for forming the right side bottom part and thermal bonding for forming the left side bottom part on the upper plate side formed by thermally bonding the inner surfaces from the bottom thermal bonding part to the upper side plate side left ridge line thermal bonding part obliquely upward. And a back plate side right bottom forming thermal bonding portion formed by thermally bonding the inner surfaces from the bottom thermal bonding portion obliquely upward to the back plate side right ridge line thermal bonding portion, and the bottom heat Four bottom-forming heat-bonding portions comprising a back-plate-side left-side bottom-forming heat-bonding portion formed by thermally bonding the inner surfaces from the bonding portion to the back-plate-side left-side ridge line heat-bonding portion obliquely upward. In the gusset bag, the top plate and the folding And said bottom heat-bonded portion and the upper surface plate side right ridge heat seal portion and the upper surface plate side right bottom forming heat bonding portion and the formed upper plate side right triangle region of the plate, the folding plate and the upper plate The bottom plate side left triangular region formed by the bottom heat bonding portion, the top plate side left ridge heat bonding portion, and the top plate side left bottom forming thermal bonding portion, and the bottom portion of the back plate and the folding plate. The back plate side right triangle region formed by the heat bond portion, the back plate side right ridge line heat bond portion, and the back plate side right bottom forming thermal bond portion, and the bottom heat bond of the back plate and the folding plate Of the back plate side left side ridge line thermal bonding portion and the back plate side left side bottom forming thermal bonding portion, the top plate side right triangle The upper plate side right side bending means is installed in the area. The upper surface plate side left side bending means is provided in the upper surface plate side left side triangular area, and the upper surface plate side right side bending means has one end reaching the upper surface plate side right side ridge line thermal bonding portion. The upper surface plate is a perforation that does not reach the outer end of the upper surface plate side right ridge line thermal bonding portion and the other end does not reach the inner end of the upper surface plate side right bottom portion thermal bonding portion, The side left side bending means has one end reaching the upper surface plate side left ridge line thermal bonding portion, but does not reach the outer end of the upper surface plate side left ridge line thermal bonding portion, and the other end is the upper surface plate side left bottom portion. A gusset bag characterized by a perforation that does not reach the inner end of the heat-bonding portion for forming .

Two folding plates having a substantially V-shaped cross section are inserted between the top plate and the back plate so that the folding portions of the two folding plates face each other, and the folding plate facing the right end of the top plate The upper surface plate side right ridge line heat bonding part formed by heat bonding the inner surfaces of the ridge lines to be formed and the inner surface of the ridge line formed by the folding plate facing the left end of the upper surface plate are thermally bonded. A top plate side left side ridge line thermal bonding portion to be formed, and a back plate side right side ridge line thermal bonding portion formed by thermally bonding the inner surfaces of the ridge line formed by the folding plate facing the right end of the back plate; A cylindrical shape having four ridge line thermal bonding portions formed of a back plate side left ridge line thermal bonding portion formed by thermally bonding the inner surfaces of the ridge lines formed by the folding plate facing the left end of the back plate. The body and the upper and lower ends of the cylindrical body To form a top portion heat-bonded and bottom heat-bonded portion, said bottom heat from the adhesive portion of the inner surfaces leading to said upper plate side right ridge heat seal portion obliquely upward is formed by thermally bonding the top plate side Thermal bonding part for forming the right side bottom part and thermal bonding for forming the left side bottom part on the upper plate side formed by thermally bonding the inner surfaces from the bottom thermal bonding part to the upper side plate side left ridge line thermal bonding part obliquely upward. And a back plate side right bottom forming thermal bonding portion formed by thermally bonding the inner surfaces from the bottom thermal bonding portion obliquely upward to the back plate side right ridge line thermal bonding portion, and the bottom heat Four bottom-forming heat-bonding portions comprising a back-plate-side left-side bottom-forming heat-bonding portion formed by thermally bonding the inner surfaces from the bonding portion to the back-plate-side left-side ridge line heat-bonding portion obliquely upward. In the gusset bag, the top plate and the folding And said bottom heat-bonded portion and the upper surface plate side right ridge heat seal portion and the upper surface plate side right bottom forming heat bonding portion and the formed upper plate side right triangle region of the plate, the folding plate and the upper plate The bottom plate side left triangular region formed by the bottom heat bonding portion, the top plate side left ridge heat bonding portion, and the top plate side left bottom forming thermal bonding portion, and the bottom portion of the back plate and the folding plate. The back plate side right triangle region formed by the heat bond portion, the back plate side right ridge line heat bond portion, and the back plate side right bottom forming thermal bond portion, and the bottom heat bond of the back plate and the folding plate Among the four triangular regions formed by the back plate side left side triangular region formed by the back plate side left side ridge line thermal bonding part and the back plate side left side bottom forming thermal bonding part. set the back plate side right folding means in the region The back plate side left side bending means is provided in the back plate side left triangle area, and the back plate side right side bending means has one end reaching the back plate side right side ridge line thermal bonding part. The back plate is a perforation that does not reach the outer end of the back plate side right side ridge line thermal bonding portion and the other end does not reach the inner end of the back plate side right side bottom forming thermal bond portion, The side left side bending means has one end reaching the back plate side left side ridge line thermal bonding portion, but does not reach the outer end of the back plate side left side ridge line thermal bond portion, and the other end is the back plate side left bottom portion. A gusset bag characterized by a perforation that does not reach the inner end of the heat-bonding portion for forming .

Two folding plates having a substantially V-shaped cross section are inserted between the top plate and the back plate so that the folding portions of the two folding plates face each other, and the folding plate facing the right end of the top plate The upper surface plate side right ridge line heat bonding part formed by heat bonding the inner surfaces of the ridge lines to be formed and the inner surface of the ridge line formed by the folding plate facing the left end of the upper surface plate are thermally bonded. A top plate side left side ridge line thermal bonding portion to be formed, and a back plate side right side ridge line thermal bonding portion formed by thermally bonding the inner surfaces of the ridge line formed by the folding plate facing the right end of the back plate; A cylindrical shape having four ridge line thermal bonding portions formed of a back plate side left ridge line thermal bonding portion formed by thermally bonding the inner surfaces of the ridge lines formed by the folding plate facing the left end of the back plate. The body and the upper and lower ends of the cylindrical body To form a top portion heat-bonded and bottom heat-bonded portion, said bottom heat from the adhesive portion of the inner surfaces leading to said upper plate side right ridge heat seal portion obliquely upward is formed by thermally bonding the top plate side Thermal bonding part for forming the right side bottom part and thermal bonding for forming the left side bottom part on the upper plate side formed by thermally bonding the inner surfaces from the bottom thermal bonding part to the upper side plate side left ridge line thermal bonding part obliquely upward. And a back plate side right bottom forming thermal bonding portion formed by thermally bonding the inner surfaces from the bottom thermal bonding portion obliquely upward to the back plate side right ridge line thermal bonding portion, and the bottom heat Four bottom-forming heat-bonding portions comprising a back-plate-side left-side bottom-forming heat-bonding portion formed by thermally bonding the inner surfaces from the bonding portion to the back-plate-side left-side ridge line heat-bonding portion obliquely upward. In the gusset bag, the top plate and the folding And said bottom heat-bonded portion and the upper surface plate side right ridge heat seal portion and the upper surface plate side right bottom forming heat bonding portion and the formed upper plate side right triangle region of the plate, the folding plate and the upper plate The bottom plate side left triangular region formed by the bottom heat bonding portion, the top plate side left ridge heat bonding portion, and the top plate side left bottom forming thermal bonding portion, and the bottom portion of the back plate and the folding plate. The back plate side right triangle region formed by the heat bond portion, the back plate side right ridge line heat bond portion, and the back plate side right bottom forming thermal bond portion, and the bottom heat bond of the back plate and the folding plate Of the back plate side left side ridge line thermal bonding portion and the back plate side left side bottom forming thermal bonding portion, the top plate side right triangle The upper plate side right side bending means is installed in the area. A top plate side left side bending means is provided in the top side plate side left triangle region, a back plate side right side bending means is provided in the back plate side right triangle region, and the back plate side left side A back plate side left side bending means is provided in the triangular area, and the top plate side right side bending means has one end reaching the top plate side right ridge line thermal bonding part, but the top plate side right side ridge line thermal bonding part. A perforation that does not reach the outer end and the other end does not reach the inner end of the upper surface plate side right bottom forming thermal bonding portion. Although it reaches the upper surface plate side left ridge line heat bonding portion, it does not reach the outer end of the upper surface plate side left ridge line heat bonding portion, and the other end is on the inner end of the upper surface plate side left bottom portion heat bonding portion. Misi never reach The back plate side right side bending means has one end reaching the back plate side right side ridge line thermal bonding portion, but does not reach the outer end of the back plate side right side ridge line thermal bonding portion, and the other end. Is a perforation that does not reach the inner end of the back plate side right bottom forming thermal bonding portion, and the back plate side left side bending means has one end reaching the back plate side left ridge line thermal bonding portion However, it is a perforation that does not reach the outer end of the back-plate-side left-side ridge line heat-bonding portion, and the other end does not reach the inner end of the back-plate-side left bottom forming heat-bonding portion. Gusset bag.

The gusset bag according to any one of claims 1 to 5, wherein the bending means is at least one perforation .

The gusset bag according to any one of claims 1 to 6, wherein the bending means has two or three perforations, and the interval between the stripes is 0.7 to 3.0 mm .

The gusset bag with a pouring tool according to any one of claims 1 to 7, wherein the pouring tool is fixed to the top thermal bonding portion by heat bonding .