JPWO2003080458A1 - Sealed bag with chuck - Google Patents

Sealed bag with chuck Download PDF

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JPWO2003080458A1
JPWO2003080458A1 JP2003578235A JP2003578235A JPWO2003080458A1 JP WO2003080458 A1 JPWO2003080458 A1 JP WO2003080458A1 JP 2003578235 A JP2003578235 A JP 2003578235A JP 2003578235 A JP2003578235 A JP 2003578235A JP WO2003080458 A1 JPWO2003080458 A1 JP WO2003080458A1
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bag
bag body
chuck
sealed
opening
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JP4423045B2 (en
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研一 田中
研一 田中
郁雄 高村
郁雄 高村
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Idemitsu Unitech Co Ltd
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Idemitsu Unitech Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • B65D33/25Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • B65D33/25Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/007Details of, or accessories for, sacks or bags for facilitating the separation of the two walls, e.g. walls of inequal height, tabs; for maintaining the mouth of the sack or bag open
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • B65D33/25Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2516Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
    • B65D33/2533Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener the slide fastener being located between the product compartment and the tamper indicating means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Abstract

チャックや袋全体が大型化せず、製袋時に突起部に融解,偏平化等が生じることなく、密封袋の易開封性を確実に向上させることができるチャック付き密封袋である。本密封袋は、一側に開口部1aを有する袋本体1と、袋本体1の開口部近傍に熱融着され、開口部1aに沿って対向する一対のテープ11a,11b及び一対のテープ11の対向面に形成され、開口部1aに沿って咬脱自在に咬合して袋本体1を密封する雌雄一対の咬合具12a,12bを有するチャック10とを備え、一対の各テープ11a,11bの袋本体開口側端縁部に形成される一対の凸条をなし、袋本体1aの内面側及び外面側に一体的に突出する突起部20a,20bを備えるとともに、突起部20a,20bが、一対のテープ11が袋本体内面に熱融着されることにより、袋本体1の開口縁部より内側に位置するとともに、この突起部20a,20bを袋本体1の内面に熱融着しない構成としてある。It is a sealed bag with a chuck that can reliably improve the easy-openability of the sealed bag without causing the chuck or the entire bag to be enlarged and without causing the protrusions to melt or flatten during bag making. The sealed bag has a bag body 1 having an opening 1a on one side, a pair of tapes 11a and 11b and a pair of tapes 11 which are heat-sealed near the opening of the bag body 1 and face each other along the opening 1a. And a chuck 10 having a pair of male and female bites 12a and 12b that are occupably detachably engaged with each other along the opening 1a and seal the bag body 1. The pair of protrusions 20a and 20b are integrally formed on the inner surface side and the outer surface side of the bag body 1a, and a pair of protrusions 20a and 20b are provided. When the tape 11 is heat-sealed to the inner surface of the bag main body, the tape 11 is positioned on the inner side of the opening edge of the bag main body 1, and the protrusions 20a and 20b are not heat-sealed to the inner surface of the bag main body 1. .

Description

技術分野
本発明は、合成樹脂フィルム等からなる袋本体の開口近傍に、袋を開閉,密封する咬合式のチャック(ファスナー)を備えたチャック付き密封袋に関する。
特に、チャックのテープ端縁部に袋本体の内側面及び外側面の双方に一体的に突出する突起部を設けるとともに、この突起部を袋本体の開口から露出しない内側に、袋側に融着させることなく配設することによって、チャックや袋全体が大型化することなく、また、製袋時に突起部の融解,偏平化等が生じることなく、袋の易開封性を確実に向上させることができる、医薬品や食品,雑貨等の収納に用いられる小型の密封袋に好適なチャック付き密封袋に関する。
背景技術
一般に、合成樹脂フィルム等で形成した袋本体の開口部に雌雄咬合式の樹脂製チャックを貼着した、チャック付きの密封袋が知られている。この種のチャック付き密封袋は、袋自体が安価で大量に製造でき、軽量かつ可撓性,耐水性等に優れる上、咬合式のチャックの開閉が自在で、しかも、チャックを閉じることにより袋内を容易に密封できることから、例えば、医薬品や食品,雑貨等を収納する容器,袋として広く普及している。このような樹脂製の密封袋に備えられるチャックは、樹脂製のテープの表面に咬脱自在に構成された雌雄一対の咬合具が形成されたもので、テープが袋本体の開口近傍に熱融着等されるようになっており、咬合具の雌雄部が咬合,離脱することによって、袋の開口が開閉され、咬合具が咬合した状態で袋内部が密封されるようになっている。
ここで、このような密封袋に備えられるチャックの開閉は、袋を閉じる場合には、対向,離間している雌部と雄部の一部を位置合わせしつつ指で挟持し、その挟持箇所を指で押圧して咬合させ、その押圧している指を開口部に沿って移動させることにより、雌雄部を順次咬合させてチャック全体を閉じ合わせることができる。そして、このように雌雄部が咬合したチャックを開く場合には、袋本体の開口縁部を指で掴んで両側に引くことで、雌部と雄部の咬合の一部を解除させ、咬合の外れた部分から順次チャックを離間させてチャック全体の咬合を外し、袋を開くことができる。
ところが、このようなチャック付き密封袋は、袋本体がポリプロピレン等の薄いフィルムによって形成されていることから、チャックを開く際に指で挟持する袋の開口縁部が滑り易く、特に指先が湿っている場合や力の弱い者が開けようとすると、指が滑ってチャックを上手く開けないということがあった。
一般に、この種の密封袋では、袋内部を確実に密封できるように、チャックを構成する雌雄一対の咬合具は一定の強さで咬合し、簡単には開かないようになっている。このため、袋の把持部分が滑り易い従来の密封袋では、袋の開封作業が困難となり、特に幼児や老齢者等が利用する医薬品用の袋や、家庭で主婦等が使用する食品用や雑貨用の袋としては、使い易さ,開け易さの面で問題があった。
そこで、これまで、上述のような樹脂製密封袋における開封時の指の滑りを防止してチャック開封の困難性を緩和するため、袋開口部近傍に突条等を設けて指を引っかけられるようにした、指滑り止め構造付きの密封袋が提案されるようになった。
第11図及び第12図は、これまで提案されている指滑り止め構造を備えた従来の密封袋を示す断面で、第11図は密封袋全体の側面断面図、第12図は袋開口部近傍の要部側面断面図である。
第11図に示す密封袋は、実開平3−19313号公報に提案されているもので、雌雄一対の咬合具112(112a,112b)を形成したチャック111(同公報では「レール状ファスナー」)を、樹脂製の袋本体101の開口縁部外側に連続するように貼着するとともに、このチャック111の外側縁部を摘み部113a,113bとして外側に延出,曲折させ、この摘み部113a,113bの端縁に、指滑り止め手段となる断面三角形状に形成された膨大部114a,114bを形成するようにしたものである。この密封袋によれば、チャック111の外側最端部に備えられた膨大部114a,114bに指を引っかけることにより、袋の開封時に指が滑ることなくチャック111を開くことが可能になった。
また、第12図に示す密封袋は、実開平5−76309号公報に提案されているもので、第11図に示した密封袋の場合と同様、袋本体201の開口縁の外側に連続して、雌雄一対の咬合具212(212a,212b)を形成したチャック211(同公報では「レール状ファスナー」)を貼着し、このチャック211の外縁部を摘み部213a,213bとして構成するとともに、この摘み部213a,213bの表面に、指滑り止め手段となる複数の突条214,214...を形成するようにしたものである。この密封袋によれば、チャック211の縁部表面に形成された複数の突条214,214...が所定の間隔をもって形成され、この複数の突条214,214...の間に指の腹部を嵌めることができるようになっており、これによって、チャック開封時の指の滑りを防止することが可能となった。
しかしながら、これら従来提案されてきた指滑り止め構造を備えた密封袋では、第11図及び第12図に示したように、いずれも、チャックが袋本体の開口側縁部から外側に連続して融着され、かつ、チャックの外縁を摘み部として更に外側に延出させる構成となっていたことから、チャックを含めた袋全体が大型化するという問題があった。このようなチャックによる密封袋の大型化は、例えば寝具や衣類等、大きな内容物を収納するために袋自体が大型化された密封袋の場合にはそれ程問題とならなかったが、医薬品や食品用等に使用されるような小型化,薄型化された密封袋では、その影響はきわめて大きかった。
しかも、このようにチャックが袋開口の外側に連続する構造では、チャック自体が開口部となり、かつ、チャックの周囲を覆うものが存在しないため、チャックの開封時に内容物が外にこぼれたり、袋内に異物等が混入し易くなり、特に、小さな物や細かい物,液体等を収納する家庭,医療用として使用される小型の密封袋の場合、深刻な問題となった。
さらに、このようにチャックが袋の開口側最端部に形成される密封袋では、袋開口部分のシール(トップシール)ができないという問題も発生した。この種の密封袋では、例えば流通用に使用される袋の場合、袋内を完全に密封する必要があり、チャック側の開口部分を含めて袋の四辺を全てシールすることが必要となる。ところが、袋の開口部の外側にチャックが配設され、滑り止め用の摘み部が形成される密封袋では、袋開口側をシールできず、特に流通用の密封袋に対応することができなかった。
また、第11図に示した密封袋のように、チャックの最端部に突条(膨大部)を備える滑り止め構造では、膨大部から外側には連続する部分が存在しないことから、指の力が膨大部のみに集中してしまい、実開平5−76309号公報でも指摘されている通り、膨大部が指先に強く食い込み、指先に痛みやしびれが生ずるという問題があった。
一方、第12図に示した密封袋のように、複数の突条を摘み部の両面に別々に形成する構造では、指の力が異なる位置に形成された複数の突条に分散してしまい、却って指に力が入りにくくなるという問題が生じた。
ここで、以上のようにチャックを袋本体の外側に連続して融着させる従来の密封袋の問題を回避する手段として、チャック全体を小型化し、袋本体の内面に配設,融着させるとともに、この袋の内面側に突条等の滑り止め手段を突出させることが考えられる。
しかし、チャックを単に袋本体内面に配設して突条等を形成するというだけでは、突条等を袋の内面側にしか突出させることができず、指の滑り止め防止手段として必ずしも充分とは言えなかった。また、チャックを袋本体に融着する際に、袋内面に配設された突条等がチャックとともに融解,偏平化してしまい、指の滑り止め手段として機能しなくなるおそれもあった。さらに、このような突条の融解,偏平化を防止するために、例えば、融解しても一定の長さとなるように、突条等を予め長く形成することも考えられるが、単に突条を長くするのみでは、袋の製袋時に突条が倒れやすくなって製造が困難化するとともに、袋の内側に突条が長く突出することで、袋開口に指を入れにくくなり、却って袋の開閉性が損なわれるおそれもあった。
本発明は、以上のような従来の技術が有する問題を解決するために提案されたものであり、チャックのテープ端縁部に袋本体の内側面及び外側面の双方に一体的に突出する突起部を設けるとともに、この突起部を袋本体の開口から露出しない内側に、袋側に融着させることなく配設することによって、チャックや袋全体が大型化することなく、また、製袋時に融解,偏平化等が生じることなく、袋の易開封性を確実に向上させることができる、特に、医薬品や食品,雑貨等の収納に用いられる小型の密封袋に好適なチャック付き密封袋の提供を目的とする。
発明の開示
上記目的を達成するため、本発明のチャック付き密封袋は、一側に開口する袋本体と、この袋本体の開口近傍に貼着され、当該袋本体の開口に沿って対向する一対のテープ、及びこの一対のテープの対向面に形成され、前記袋本体の開口に沿って咬脱自在に咬合して当該袋本体を開閉自在に密封する雌雄一対の咬合具を有するチャックと、を備えるチャック付き密封袋であって、前記一対の各テープの前記袋本体開口側端縁部に形成される凸条をなし、当該袋本体の内面側及び外面側に一体的に突出する突起部を備え、この突起部が、前記一対のテープが前記袋本体内面の前記開口内側に貼着されることにより、当該袋本体の開口縁部より内側に位置する構成としてある。
このような構成からなる本発明のチャック付き密封袋によれば、袋本体を開閉,密封するチャックの端縁部に沿って、袋開閉時の指の滑り止め手段となる突起部が備えられ、この突起部が、チャックとともに、袋本体の開口部より内側に配設されることになる。このようにチャック及び突起部を袋本体の内側に位置させることで、従来の密封袋のように、チャックや滑り止め構造が袋の外側に大きく張り出すことがなく、チャック及び袋全体を小型化することができる。
また、このように突起部を含むチャック全体が袋本体内に収納される構造とすることで、チャックの外側に袋本体の開口縁部をさらに延出させることができるので、チャックを備えた開口部の全体を袋本体で覆うことができ、密封袋の開閉の際に内容物がこぼれたり、異物が侵入することもなくなる。
そして、密封袋の指滑り止め手段となる本発明の突起部は、チャックが袋本体内面に貼着された状態で、袋本体の内面側及び外面側方向に、ほぼ均等に一体的に突出する、例えば断面円形状等の凸条からなり、この凸条が袋本体から露出することなく袋の内側に位置するようになっている。このような構成とすることにより、突起部が袋の内面側及び外面側に一体的に突出しているので、袋の開閉の際には、突起部を二本の指で袋の内外面から一箇所でしっかり挟持することができる。しかも、突起部が袋本体の内側に位置しているので、指で挟持された突起部のさらに外側(挟持する指の掌側)に袋の開口縁部が延出し、この延出した袋縁部も、突起部とともに指で挟持することができる。
従って、本発明の密封袋では、袋内外面に突出する突起部を一箇所で挟持することで、力が分散することなくしっかりと突起部を保持することができ、かつ、突起部から延出する袋縁部も併せて挟持することで、突起部のみに力が集中することなく袋の開口縁部全体を保持することができるようになる。これにより、本発明では、指の滑りが生ずることなく、また、従来の密封袋のように指先に痛みやしびれ等が発生することもなく、容易かつ円滑,確実に密封袋の開封を行うことができるようになる。しかも、袋内外から同一箇所で同時に挟持できる突起部は、袋の内面側や外面側に個別に突出する従来の密封袋の突条等と比較して、袋の内面側又は外面側への各突出幅自体を小さくすることができ、袋の製袋時等に突条の倒れ等が生じて製造が困難となったり、袋内面に突条が長く突出して開口部に指が入れにくくなったりするといったことも一切なくなる。
そして、本発明の密封袋では、前記一対のテープが前記袋本体の内面に熱融着により貼着される場合に、当該一対のテープに備えられる前記突起部が、前記袋本体内面に熱融着されない構成としてある。このような構成とすることにより、縁部に突起部を備えたチャックを袋本体に熱融着する際に、突起部を除く残余の部分のみを袋側に融着し、突起部は袋側に融着しないようにすることができる。
一般に、合成樹脂製の密封袋に備えられるチャックは、熱融着されることにより袋本体に一体的に貼着されるようになっているが、突起部を備えたチャック全体をそのまま熱融着すると、突起部も熱で融解して偏平化してしまい、指の滑り止め手段として機能しなくなってしまうおそれがある。本発明では、チャックの突起部を除く残余部分のみを袋側に熱融着し、突起部については融着しない構成とすることで、突起部が融解,偏平化することを防止でき、突起部を本発明に係る指滑り止め手段として有効に機能させることができるようになっている。
また、本発明の密封袋では、前記突起部が、前記袋本体の深さ方向に対し、同じ位置に配設される構成とし、また、異なる位置に配設される構成とすることができる。袋本体の内面に対向して配設される突起部を、袋の深さ方向の異なる位置に配設されるように構成することにより、チャックを咬合させた状態、すなわち密封袋を閉じ合わせた状態において、対向する突起部同士が干渉しないようになっている。このように突起部同士の干渉が生じない本発明では、各突起部の外形は、チャック咬合時に対向するテープ対向面間の距離の範囲内で、最適な大きさに設定することが可能となり、突起部を、指が引っかかり易く、かつ、指を間に挿入し易い大きさ,形状に任意に形成して、密封袋の易開封性を更に向上させることができる。
そして、本発明に係る突起部の大きさは、突起部が袋本体の深さ方向の同じ位置に配設される場合、前記袋本体の内面側及び外面側突出方向の最大幅が0.3mm以上テープ対向面間距離以下となるように構成してある。このような構成とすることにより、チャックの咬合時に対向する突起部を、テープ対向面間で互いに干渉しない範囲で最大となるように設定することができる。特に、袋本体の内面側及び外面側突出方向の最大幅が0.5mm以上テープ対向面間距離の1/2以下となるように構成すると、更に掴み易くなり、オスとメスの突起の間に間隙を設けて指を入れ易くできるので望ましい。
医薬品や食品用として使用される小型の密封袋では、例えばテープ厚みが約0.15〜0.16mm程度のテープの場合、チャック咬合時に対向するテープ対向面間の距離は約1.5mm程度が一般的であるが、このテープ対向面に突出,対向する突起部同士が、このテープ対向面間で干渉すると、袋開封時に突起部の間に指を入れにくくなり、袋の易開封性を損なうことになる。一方、突起部間への指の挿入性を高めるために突起部を小さくした場合、例えば突起部の突出幅が0.3mm程度に満たないと、突起部が小さ過ぎて指の引っかかりが悪くなり、指の滑り止め手段として機能しなくなる。そこで、本発明では、例えばテープ厚みが約0.15〜0.16mm程度のテープに対して、突起部の大きさを、袋本体の内外面側へ突出する最大幅が0.3mm以上で、かつ最大でテープ対向面間距離以下、望ましくは最大幅が0.5mm以上でテープ対向面間距離の1/2(約0.7mm)以下となるように設定することで、突起部が袋本体内面の同位置に対向して配設された場合にも、指の引っかかり性を確保しつつ、テープ対向面間に突出する突起部の突出幅の合計がテープ対向面間の距離(約1.5mm)を超えないようにして、指の挿入性が損なわれることのないようにしてある。これにより、本発明では、指の引っかかり性と易挿入性の双方が良好な状態に確保された、易開封性に優れた密封袋を提供することできる。
一方、突起部が袋本体の深さ方向の異なる位置に配設される場合には、突起部の大きさを、前記袋本体の内面側及び外面側突出方向の最大幅が0.3mm以上2.0mm以下、好ましくは最大幅が0.5mm以上となるように構成してある。この場合、特に、袋本体の内面側及び外面側突出方向の最大幅が0.3mm以上テープ対向面間距離以下、好ましくは最大幅が0.5mm以上となるように構成することが望ましい。このような構成とすることにより、チャック咬合時に突起部が異なる位置で対向するように配設される場合に、テープ対向面間の距離の最大範囲で、更に突起部を大きく形成することができる。
上述のように、小型の密封袋では、テープ厚みが約0.15〜0.16mm程度のテープの場合、チャック咬合時のテープ対向面間の距離は約1.5mm程度となっている。一方、突起部は、突出幅が0.3mmにも満たなくなると、指の引っかかり性が悪化し、指の滑り止め手段として機能しなくなる。そこで、本発明では、突起部を袋本体内面の異なる位置で対向させる場合に、例えばテープ厚みが約0.15〜0.16mm程度のテープに対して、袋本体内面側及び外面側への突出幅の全体が、0.3mm以上で、最大で2.0mm以下、望ましくは0.5mm以上でテープ対向面間距離(約1.5mm)以下となるように形成するようにしてある。これにより、テープ各突起部は、互いに干渉することなく、テープ対向面間の距離の範囲で最大限に大きく形成されることになり、指の滑り止め性を更に向上させて、密封袋の易開封性をより向上させることが可能となる。
そして、突起部は、断面円形状の凸条をなす構成とし、また、断面角形状の凸条をなす構成とすることができる。このように、本発明に係る突起部は、袋本体の内面側及び外面側の双方に一体的に突出可能な凸条である限り、その断面形状は特に限定されず、例えば、断面円形状の凸条とし、また、四角形や菱形等の断面角形状の凸条とすることができる。すなわち、本発明に係る突起部は、密封袋やチャックの大きさ,チャックの咬合力等に応じて、本発明を適用する密封袋に最適な断面形状のものを選択的に設定することができるようになっており、このような突起部を備えることにより、汎用性,拡張性に優れたチャック付き密封袋を実現することが可能となる。
発明を実施するための最良の形態
以下、本発明に係るチャック付き密封袋の好ましい実施形態について、図面を参照しつつ説明する。
[第一実施形態]
まず、第1図〜第9図を参照しつつ、本発明に係るチャック付き密封袋の第一実施形態について説明する。
第1図は、本発明の第一実施形態に係るチャック付き密封袋を模式的に示す袋全体の側面断面図である。第2図は、同じく本実施形態に係るチャック付き密封袋を模式的に示すチャック部分の側面断面図で、(a)はチャックが離間した状態、(b)はチャックが咬合した状態である。第3図は、同じく本実施形態に係るチャック付き密封袋を示す、(a)は袋全体の正面図、(b)は(a)の二点鎖線に示す部分の拡大図である。また、第4図は、本実施形態と従来の密封袋における突起部の大きさを比較するためのチャック部分の側面断面図であり、(a)は本発明の第一実施形態、(b)は従来の密封袋を示している。
これらの図に示すように、本実施形態に係るチャック付き密封袋は、一側に開口した開口部1aを有する袋状に形成された袋本体1と、この袋本体1の開口部1aの近傍に貼着される雌雄咬合式のチャック10を備えた密封袋となっている。
そして、袋本体1の内面に貼着されるチャック10の基材となる一対のテープ11の縁部に、袋内外面に突出して袋開閉時の指の滑り止め手段となる一対の突起部20(20a,20b)を備えるようになっている。
袋本体1は、一側に開口する袋状に形成された樹脂製の袋体である。この袋本体1は、通常、平面矩形状等に形成された二枚の樹脂製フィルム(メス側フィルム2及びオス側フィルム3)が重ね合わされ、又は一枚の樹脂製フィルムが折り曲げられて重ね合わされ、第3図に示すように、開口部1aとなる一辺を除く三辺(又は二辺)が熱融着等の手段により貼り合わされることによって(第3図に示す貼着部5参照)、袋状に製袋されるようになっている。ここで、袋本体1を構成する樹脂製フィルムは、一般に、二軸延伸ポリプロピレンフィルとキャストポリプロピレンフィルムをラミネートしたフィルム等が用いられ、収納対象となる内容物に応じて種々の大きさに裁断され製袋されるようになっている。
チャック10は、袋本体1の一側開口部1aを開閉自在に密封する開閉手段であり、第1図に示すように、袋本体1の開口部1a近傍に配設される一対のテープ11(11a,11b)と、このテープ11の表面に形成された雌雄一対の咬合具12(12a,12b)を備えている。
一対のテープ11は、袋本体1の内面に、開口部1aに沿って対向して貼着される帯状部材(第3図参照)で、第1図に示すように、一対の咬合具12a,12bの基材となるメス側テープ11aとオス側テープ11bからなっている。この一対のテープ11a,11bは、通常、ポリプロピレン等の合成樹脂からなり、熱融着によって袋本体1の内面に貼着されるようになっている。
そして、本実施形態では、この一対のテープ11a,11bが、第3図に示すように、袋本体1の内面の開口部1aから袋内側に入った位置に貼着されるようになっており、後述するように、テープ11の端縁に沿って形成される突起部20が袋本体1の開口部1aから露出しないようになっている。
一対の咬合具12は、対向する一対のテープ11a,11bの各表面に一条ずつ形成された雌雄一対の咬合手段であり、第1図に示すように、メス側テープ11aに形成されるメス側咬合部12aとオス側テープ11bに形成されるオス側咬合部12bからなり、両咬合部12a,12bが、袋本体1の内面側の対応する同位置に対向して配設されるようになっている。
そして、第2図に示すように、メス側咬合部12aとオス側咬合部12bが咬脱自在に咬合することにより、袋本体1の開口部1aが開閉自在に密封されることになる。
この一対の咬合具12は、通常、押出し成形等の方法により、基材となるテープ11と一体的に形成されるようになっている。ここで、一対の咬合具12は、袋本体1を開閉自在に密封できる咬合構造(チャック構造)を有する限り、どのような構成であっても良く、例えば本実施形態では、第2図に示すように、一側にスリットを有する断面ほぼC字状のメス側咬合部12aと、このスリットを介してメス側咬合部12a内に咬脱自在に咬合する断面鏃状のオス側咬合部12bとで構成してある。
なお、本実施形態では、一対の咬合具12がテープ11の表面に一組(一条)備えられるようになっているが、咬合具12は少なくとも一組備えられれば良く、例えば咬合具12が二重に備えられる二重チャック構造等、複数条の咬合具12を備えることもできる。
複数の咬合具12を備えるチャック構造の場合、袋本体1の気密性をより確実に保持することができるため、液体を収納する密封袋等、袋内をより高気密に保つ必要のある密封袋のチャック構造として好適である。
そして、以上のような構成からなるチャック10の一対のテープ11の各端縁部に、それぞれ指滑り止め手段となる突起部20(20a,20b)が形成されている。第1図〜第4図を参照して、本実施形態に係る突起部20の詳細について説明する。
これらの図に示すように、本実施形態の突起部20は、一対のテープ11の袋本体1の開口部1a側端縁部にそれぞれ形成される一対の凸条部材である。具体的には、突起部20は、メス側テープ11aに形成されるメス側突起部20aと、オス側テープ11bに形成されるオス側突起部20bからなり、両突起部20a,20bがそれぞれ開口部1aに沿って配設され、袋本体1の深さ方向(図面上下方向)の同位置に対向するようになっている。そして、この突起部20a,20bは、それぞれ袋本体1を構成するフィルム2,3の内面側及び外面側に一体的に突出するようになっており、本実施形態では、第1図及び第2図に示すように、断面円形状の凸条に形成されている。
ここで、この断面円形状の突起部20は、第4図に示すように、袋本体1の内面側及び外面側への突出幅(第4図(a)に示すW及びW)が、ほぼ均等に形成され、この袋内外面側の突出方向の最大幅の全体(第4図(a)に示すW)が、約0.3mm以上でテープ対向面間距離以下、望ましくは0.5mm以上でテープ対向面間距離の1/2以下(約0.7mm以下)となるように構成してある。
一般に、医薬品や食品用として使用される小型の密封袋では、厚みが約0.15mmのテープ(11a,11b)の場合、チャック咬合時に対向するテープ対向面間の距離(第4図(a)に示すD)は、約1.5mm程度が一般的である。本実施形態では、突起部20a,20bが袋内面の同位置に対向しているので、テープ対向面に突出,対向する突起部同士が、テープ対向面間で干渉すると、袋開封時に突起部の間に指を入れにくくなり、袋の易開封性を損なうことになる。一方、突起部20は、袋外面側(体4図中のW)及び袋内面側(同じくW)方向への突出幅の合計(同じくW)が例えば0.3mm程度に満たないと、突起部が小さ過ぎて指の引っかかりが悪くなり、指の滑り止め手段として機能しなくなってしまう。
そこで、本実施形態では、例えば厚みが約0.15〜0.16mm程度のテープに対して、突起部20a,20bの大きさを、それぞれ、袋本体1の内外面側へ突出する最大幅Wが0.3mm以上で、かつ最大でテープ対向面間距離以下となるように設定するようにしてある。このようにすると、W≒W≒0.67mmとなり、テープの厚みを0.15mmとすると、W≒0.67(W)+0.67(W)+0.15(テープ厚み)≒1.5mm(W)となり、突出幅の全体(W)は最大でもテープ対向面間距離以下となる。
さらに、望ましくは最大幅Wが0.5mm以上でテープ対向面間距離の1/2(約0.7mm)以下となるように設定するようにしてある。この場合、例えば、W≒W≒0.28mmとすると、テープの厚み0.15mmを含めて、W≒0.28(W)+0.28(W)+0.15(テープ厚み)≒0.7mm(W)となり、突出幅の全体(W)を最大でテープ対向面間距離の1/2以下にすることができる。
このようにして、突起部20a,20bが袋本体内面の同位置に対向して配設されても、指の引っかかり性を確保しつつ、テープ対向面間に突出する突起部の突出幅の合計がテープ対向面間の距離(約1.5mm)を超えないようにして、指の挿入性が損なわれることのないようにしてある。これにより、本実施形態では、指の滑り止め手段となる一対の突起部20a,20bを、互いに干渉し合わない範囲で最大限に大きく形成することができ、指の引っかかり性と易挿入性の双方を良好な状態に確保できるようになっている。
また、このように袋本体1の内面側及び外面側へほぼ均等に一体的に突出する突起部20は、二本の指等で袋内外から同一箇所で同時に挟持できることになり、第4図に示すように、袋の内面側や外面側に個別に突出する従来の密封袋(第12図参照)の突条の突出幅(第4図(b)に示すw及びw)と比較して、袋の内面側又は外面側の各突出幅を小さくすることができ、その結果、突出幅全体も従来と比較して小さくすることができる(第4図(a)に示すW及び同図(b)に示すw参照)。従って、本実施形態の突起部20を備える密封袋では、例えば袋本体1の製袋時に、突条に倒れ等が生じて製造が困難となったり、袋内面に突条が長く突出して開口部に指が入れにくくなったりするといった問題も一切なくなり、小型で易開封性に優れた密封袋を効率よく製造することができる。
さらに、本実施形態では、上述のように一対のテープ11が袋本体1の内面に熱融着によって貼着されるようになっているが、このテープ11に形成される突起部20については、袋本体1に熱融着されないようにしてある。すなわち、本実施形態では、テープ端縁部に突起部20を備えたチャック10を袋本体1側に熱融着する際に、突起部20を除く残余のテープ部分のみを袋側に融着し、突起部20は袋側に融着しないようになっている(第2図参照)。
本実施形態に係る合成樹脂製のチャック10は、通常の密封袋の場合と同様、熱融着されることにより袋本体1に一体的に貼着されるようになっているが、突起部20を備えたチャック全体をそのまま熱融着すると、突起部20が熱で融解して偏平化してしまい、指の滑り止め手段として機能しなくなるおそれがある。そこで、本実施形態では、チャック10の突起部20を除くテープ11の残余部分のみを袋側に熱融着し、突起部20については融着しない構成としてあり、これによって、突起部20が融解,偏平化することを防止して、突起部20を指滑り止め手段として有効に機能させることができるようになっている。
しかも、突起部20を備えたチャック10は、全体が袋本体1内に収納され、チャック10の外側には袋本体1の開口縁部が延出しているので、この開口縁部を融着してトップシールすることもできる。この種の密封袋では、例えば流通用に使用される場合、袋内を完全に密封するために、チャック側の開口部分を含めて袋の四辺を全てシールすることが必要となる。本実施形態の密封袋では、袋本体1の開口縁部はチャック10の外側に延出しているので、第5図に示すように、この開口縁部を熱融着等してトップシールすることができる(第5図(a)及び(b)に示すトップシール部5a参照)。これにより、突起部20を備えることによっても、トップシール性が損なわれることがなく、高い密封性が要求される流通用密封袋に対応することができる。
なお、本実施形態に係る突起部20は、上述したように、断面円形状の凸条をテープ11に一条ずつ形成するようにしてあるが、袋本体1の内面側及び外面側の双方に一体的に突出可能な凸条である限り、その断面形状や条数等は特に限定されない。例えば、第8図に示すように、突起部20を、断面が正方形(同図(a))や菱形(同図(b))等の断面角形状の凸条とすることもできる。突起部20の数についても、例えば、第9図に示すように、各テープ11の端縁部に複数条形成することもできる。
また、本実施形態では、上述のように、厚みが約0.15〜0.16mm程度のテープ厚みと、テープ対向面間の距離(約1.5mm)に対応させて、各突起部20の最大幅Wをテープ対向面間距離(約1.5mm)以下としたが、この値はテープの厚みやテープ対向面間の距離に応じて適宜変更できることは勿論である。例えば、テープ対向面間の距離が1.5mmを超える場合、各突起部20の最大幅Wも1.5mm以上とすることができる。このように、突起部20の形状や数,大きさは、種々変更が可能であって、袋本体1やチャック10の大きさ,チャックの咬合力等に応じて、本実施形態を適用する密封袋に最適な断面形状や条数の突起部20を選択的に設定することができる。
次に、以上のような構成からなる本実施形態に係るチャック付き密封袋の開閉動作について、第2図及び第6図,第7図を参照しつつ説明する。第6図は、本実施形態に係るチャック付き密封袋の開封動作を示す、袋上方から見た斜視図であり、第7図は、同じく密封袋の開封動作を示す、袋断面を模式的に示した説明図である。
まず、袋本体1に備えられたチャック10の咬合が解除されている状態(第2図(a)に示す状態)では、開口部1aが開いているので、袋本体1の内部に、医薬品や食品,雑貨等、任意の内容物を収納することができる。内容物を袋本体1に収納した後は、チャック10を閉じて袋本体1を密封することができる。
チャック10を閉じる場合には、対向,離間しているチャック10のメス側咬合部12aとオス側咬合部12b(第2図(a)参照)の一部を位置合わせしつつ指で挟持し、その挟持箇所を指で押圧することにより両咬合部12a,12を咬合させる(第2図(b)参照)。そして、その押圧している指を開口部に沿って移動させることによって両咬合部12a,12bを順次咬合させて、咬合具12の全体を閉じ合わせることができる。
次に、咬合具12が咬合している状態(第2図(b)に示す状態)のチャック10を開く場合には、まず、袋本体1の開口縁部を指で掴み、袋縁部に位置する一対の突起部20をそれぞれ二本の指で挟持する(第6図参照)。このとき、突起部20は袋本体1の内外面側に一体的に突出しているので、第7図に示すように、両突起部20a,20bは、それぞれ二本の指で袋の内外面から一箇所においてしっかりと挟持され、突起部20が挟持する指の腹に引っかかることになる。また、突起部20の外側(挟持した指の掌側)には袋本体1の開口縁部が延出しているので、第7図に示すように、この延出した袋縁部も、突起部20とともに指で挟持されることになる。
この状態で、袋本体1を両側に引くと、第6図に示すように、メス側咬合部12aとオス側咬合部12bの咬合の一部が解除され、そのまま、咬合の外れた部分から順次チャック10を離間させることで、咬合具12全体の咬合を解除することができる。これにより、チャック10による密封が解除され、袋本体1を開いて内容物の出し入れ等が行え、内容物の収納後は、上記と同様にしてチャック10を閉じ合わせ、袋本体1を密封することができる。
以上説明したように、本実施形態に係るチャック付き密封袋によれば、袋本体1を開閉,密封するチャック10の端縁部に沿って、袋開閉時の指の滑り止め手段となる突起部20を備え、この突起部20を、チャック10とともに、袋本体1の開口部1aより内側に位置するように配設してあるので、従来の密封袋のように、チャックや滑り止め構造が袋の外側に大きく張り出すことがなく、チャック及び袋全体を小型化することができる。また、このように突起部20を含むチャック10の全体が袋本体1内に収納される本実施形態では、チャック10の外側に袋本体1の開口縁部がさらに延出するようになり、チャック10を備えた開口部1aの全体が袋本体1の側面フィルム2,3で覆われることになるので、密封袋の開閉の際に内容物がこぼれたり、異物が侵入することもなくなり、開口部のトップシールも可能となる。
そして、本実施形態では、密封袋の指滑り止め手段となる突起部20が、チャック10が袋本体1内面に貼着された状態で、袋本体1の内面側及び外面側方向に、ほぼ均等に一体的に突出する断面円形状等の凸条からなり、この凸条が袋本体1の開口部1aから露出することなく袋内側に位置するようになっているので、袋の開閉の際には、袋本体1の内面側及び外面側に一体的に突出する突起部20を二本の指で袋内外面から一箇所においてしっかり挟持することができる。
しかも、突起部20が袋本体の内側に位置することから、指で挟持された突起部20の更に外側(挟持する指の掌側)に袋開口縁部が延出し、この延出部分も、突起部20とともに指で挟持することができる。
従って、本実施形態の密封袋によれば、袋内外面に突出する突起部20を一箇所で挟持できるので、力が分散することなくしっかりと突起部20を保持することができ、かつ、突起部20から延出する袋縁部も併せて挟持できるので、突起部20のみに力が集中することなく袋縁部を保持することができる。これにより、指の滑りが生ずることなく、また、従来の密封袋のように指先に痛みやしびれ等が発生することもなく、容易かつ円滑,確実に密封袋を開けることができる。
また、このように袋内外から同一箇所で同時に挟持できる突起部20は、袋の内面側や外面側に個別に突出する従来の密封袋の突条等と比較して、袋本体1の内面側又は外面側への各突出幅自体は小さくすることができ、従来のように袋の製袋時に突条に倒れ等が生じて製造が困難となったり、袋内面に突条が長く突出して開口部に指が入れにくくなったりするといったことも一切なくなる。
さらに、本実施形態では、テープ11の各縁部に突起部20を備えたチャック10を袋本体1に熱融着する際に、突起部20を除くテープ11の残余の部分のみを袋側に融着し、突起部20は袋側に融着しないようにしてあるので、突起部20が融解,偏平化することを防止でき、突起部20を、本実施形態に係る密封袋の指滑り止め手段として有効に機能させることができる。
[第二実施形態]
次に、第10図を参照して、本発明に係るチャック付き密封袋の第二実施形態について説明する。第10図は、本発明の第二実施形態に係るチャック付き密封袋を模式的に示す袋全体の側面断面図である。
同図に示す本実施形態に係るチャック付き密封袋は、上述した第一実施形態の変形例であり、第一実施形態において袋本体1内の同位置に対向して配設されていた突起部20を、袋本体1の深さ方向に対し、異なる位置に配設するようにしたものである。その他の構成部分は、第一実施形態と同様となっており、同様の構成部分については、第一実施形態と同一符号を付し、詳細な説明は省略する。
具体的には、本実施形態に係る突起部20は、第10図に示すように、袋本体1の深さ方向(図面上下方向)に対し、オス側突起部20bがメス側突起部20aより袋内側に位置するように配設され、両突起部20a,20bの位置が、袋本体1の深さ方向に約1mm異なるようになっている。そして、本実施形態では、第一実施形態と同様、断面円形状に形成された突起部20の袋内面側及び外面側への突出幅(第4図(a)のW及びW参照)がほぼ均等に形成され、この袋内外面側の突出方向の最大幅(第4図(a)に示すW参照)が0.3mm以上2.0mm以下、好ましくは最大幅が0.5mm以上となるように構成してある。
上述したように、小型の密封袋では、厚みが約0.15〜0.16mmのテープの場合、チャック咬合時のテープ対向面間の距離は約1.5mm程度となっている。一方、突起部20は、袋外面側(W)及び袋内面側(W)方向への突出幅の合計(W)が、例えば0.3mm程度に満たなくなると、指の引っかかり性が悪化し、指の滑り止め手段として機能しなくなる。
そこで、本実施形態では、突起部20を袋本体内面の異なる位置で対向させることにより、袋本体1の内外面側へ突出する最大幅Wが0.3mm以上で、かつ最大で2.0mm以下、望ましくは最大幅Wが0.5mm以上で1.5mm以下(テープ対向面間距離以下)となるように形成してある。
対向する突起部20同士が干渉しない位置では、最大でW≒W≒1.5mmとすることができ、テープの厚みを0.15mmとすると、W≒1.5+1.5+0.15≒3.0mmとなり、Wは最大でテープ対向面間距離の2倍に設定することが可能となる。ところが、Wが約2.0mmを超えると、指や手が入れずらくなり、開封性が損なわれるおそれがる。そこで、本実施形態では、各突起部20を袋本体1内の異なる位置に配設することで突起部同士に干渉が生じることをなくしつつ、開封性が損なわれないテープ対向面間の距離の範囲で突起部20を最大限に大きく形成できるようにしたものである。
なお、本実施形態では、テープ対向面間の距離(約1.5mm)に対応させて、各突起部20の最大幅Wを最大2.0mm、望ましくは1.5mm以下としたが、この値は、上述した第一実施形態の場合と同様、テープ対向面間の距離に応じて適宜変更できることは勿論であり、例えば、テープ対向面間の距離が1.5mmを超える場合、各突起部20の最大幅Wも0.3mm以上で、対向面間距離以下に設定することができる。また、袋本体1の深さ方向で異ならせる突起部20a,20bの位置についても、本実施形態では約1mmとしたが、これについても、突起部20や袋本体1,咬合具12等の大きさや態様に応じて適宜変更できることは言うまでもない。
以上のように、本実施形態のチャック付き密封袋によれば、袋本体1の内面に対向して配設される突起部20を、袋の深さ方向の異なる位置に配設するようにしてあるので、チャック10の咬合具12を咬合させた状態、すなわち密封袋を閉じ合わせた状態において、対向する突起部同士を干渉させないようにすることができる。そして、これによって、本実施形態に係る突起部20の外形は、チャック咬合時に対向するテープ対向面間の距離Dの範囲内で、最適な大きさに設定することが可能となり、指が引っかかり易く、かつ、指を挿入し易い大きさ,形状からなる突起部20を任意に形成することができ、密封袋の易開封性を更に向上させることができる。
[実施例]
以下、本発明に係るチャック付き密封袋の実施例を、比較例を挙げつつ、より具体的に説明する。以下に示す実施例は、上述した各実施形態で示した密封袋について、下記のような具体的条件に基づいて製造したものである。
[実施例1]
(1)チャック(テープ及び咬合具)は、ポリプロピレンにより形成した。
(2)テープ端部の突起部は、断面丸形状とし、この突起部の断面円形状部分の直径を0.3mmとした。
(3)突起部の位置は、上述した第一実施形態に示した密封袋に対応して、オス側とメス側で同位置になるように形成した。
(4)袋本体は、二軸延伸ポリプロピレンフィルとキャストポリプロピレンフィルムをラミネートしたフィルムを用いて形成した。
(5)テープ端部の突起部を除くテープ部を袋本体のフィルムと融着させ、突起部は袋本体に融着させないようにした。
[実施例2]
テープ端部の突起部を断面円形状とし、直径を0.5mmとした。その他は実施例1と同様とした。
[実施例3]
テープ端部の突起部を断面円形状とし、直径を0.7mmとした。その他は実施例1と同様とした。
[実施例4]
テープ端部の突起部を断面円形状とし、直径を1.0mmとした。その他は実施例1と同様とした。
[実施例5]
テープ端部の突起部を断面円形状とし、直径を1.5mmとした。その他は実施例1と同様とした。
[実施例6]
テープ端部の突起部を断面円形状とし、直径を0.3mmとした。また、突起部の位置を、上述した第二実施形態に示した密封袋に対応して、オス側とメス側で1mmずらして配設した。その他は実施例1と同様とした。
[実施例7]
テープ端部の突起部を断面円形状とし、直径を1.0mmとした。また、突起部の位置を、上述した第二実施形態に示した密封袋に対応して、オス側とメス側で1mmずらして配設した。その他は実施例1と同様とした。
[実施例8]
テープ端部の突起部を断面円形状とし、直径を1.5mmとした。また、突起部の位置を、上述した第二実施形態に示した密封袋に対応して、オス側とメス側で1.5mmずらして配設した。その他は実施例1と同様とした。
[実施例9]
テープ端部の突起部を断面円形状とし、直径を2.0mmとした。また、突起部の位置を、上述した第二実施形態に示した密封袋に対応して、オス側とメス側で2.0mmずらして配設した。その他は実施例1と同様とした。
[比較例1]
テープ端部の突起部を断面円形状とし、直径を0.2mmとした。その他は実施例1と同様とした。
[比較例2]
テープ端部の突起部を断面円形状とし、直径を2.0mmとした。その他は実施例1と同様とした。
[比較例3]
テープ端部の突起部を断面円形状とし、直径を2.5mmとした。また、突起部の位置を、オス側とメス側で2.5mmずらして配設した。その他は実施例1と同様とした。
[比較例4]
チャック(咬合具付きテープ)として、袋体内側にのみ突出する突条片を備えたチャック「P−560」(出光ユニテック(株)製)を用いた。その他は実施例1と同様とした。
[比較例5]
テープ端部に突起部,突条片等を備えないチャックを使用した。その他は実施例1と同様とした。
上記実施例1〜9及び比較例1〜5の条件で製造した密封袋の開封試験を行い、掴み易さ,指の挿入のし易さを調査し、また、袋本体側面シール部分へのピンホールの発生及び製袋後の突起部の変形について調査した。
調査結果は、以下に示す表1の通りである。

Figure 2003080458
上記表1中に示す記号の意味は次の通りである。
・ 開封感1 ◎:非常に掴み易い,○:掴み易い,△:やや掴みづらい,×:掴みにくい
・ 開封感2 ◎:非常に指が入れ易い,○:入れ易い,△:やや入れづらい,×:入れにくい
・ 製袋後の突起部の変形 ◎:変形なし,△:やや変形(倒れ)あり
この表1から明らかなように、突起部の位置がオス側テープとメス側テープで同じ位置にある場合、まず、実施例1に示すように、突起部の直径を0.3mmとすると、掴み易さがやや落ちるが、指の入れ易さが良好であることが確認された。そして、実施例2及び実施例3に示すように、突起部の直径を0.5mmから0.7mmの範囲とすることで、掴み易さ,指の入れ易さとも良好であることが確認された。また、実施例4及び実施例5に示すように、突起部の直径を1.0mmから1.5mmの範囲とすると、指の入れ易さがやや落ちるものの、掴み易さが非常に良好になることが確認された。この範囲では、比較例1のように突起部の直径が小さいために掴み易さが損なわれることがなく、また、比較例2のように突起部の直径が大きいために指の入れ易さが悪くなることもないことが確認できた。
また、実施例6〜9に示すように、突起部の位置をオス側とメス側で1mm〜2.0mmの範囲でずらすことにより、突起部の直径を2.0mmまで大きくすることができ、掴み易さ,指の入れ易さが更に向上することが確認された。この場合には、比較例3に示すように、突起部の直径が大き過ぎて掴み易さ,指の入れ易さが損なわれたり、製袋時に突起部に倒れや変形が生じることがないことも確認できた。
なお、本発明のチャック付き密封袋は、上述した実施形態にのみ限定されるものではなく、本発明の範囲で種々の変更実施が可能であることは言うまでもない。
例えば、上記実施形態では、密封袋として、医薬品や食品,雑貨等を収納する比較的小型の密封袋を例にとって説明したが、密封袋の用途,対象はこの場合に限られるものではなく、合成樹脂製の袋本体に袋内を密封可能に封止できるチャックを備えたチャック付き密封袋であれば、どのような用途,機能の袋であっても本発明を適用することができる。従って、小型の密封袋だけでなく、比較的大型の密封袋や、袋内を脱気,圧縮するノズル挿入用の逆止弁を備える密封袋,チャックの開閉具となるチャック・スライダ等を備える密封袋等、各種のチャック付き密封袋に対しても本発明を適用することができる。
産業上の利用可能性
以上のように、本発明に係るチャック付き密封袋によれば、チャックのテープ端縁部に袋本体の内側面及び外側面の双方に一体的に突出する突起部を設けるとともに、この突起部を袋本体の開口から露出しない内側に、袋側に融着させることなく配設することによって、チャックや袋全体が大型化することなく、また、製袋時に融解,偏平化等が生じることなく、袋の易開封性を確実に向上させることができる。これにより、特に、医薬品や食品,雑貨等の収納に用いられる小型の密封袋に好適なチャック付き密封袋を実現することができる。
【図面の簡単な説明】
第1図は、本発明の第一実施形態に係るチャック付き密封袋を模式的に示す袋全体の側面断面図である。
第2図は、本発明の第一実施形態に係るチャック付き密封袋を模式的に示すチャック部分の側面断面図で、(a)はチャックが離間した状態、(b)はチャックが咬合した状態である。
第3図は、本発明の第一実施形態に係るチャック付き密封袋を示す、(a)は袋全体の正面図、(b)は(a)の二点鎖線に示す部分の拡大図である。
第4図は、本発明の第一実施形態と従来の密封袋における突起部の大きさを比較するためのチャック部分の側面断面図であり、(a)は本発明の第一実施形態、(b)は従来の密封袋を示している。
第5図は、本発明の第一実施形態に係るチャック付き密封袋の開口部側をトップシールした状態を示す図であり、(a)は側面断面図、(b)は袋正面部の拡大図である。
第6図は、本発明の第一実施形態に係るチャック付き密封袋の開封動作を示す、袋上方から見た斜視図である。
第7図は、本発明の第一実施形態に係るチャック付き密封袋の開封動作を示す、袋断面を模式的に示した説明図である。
第8図は、本発明の第一実施形態に係るチャック付き密封袋の変更例を模式的に示すチャック部分の側面断面図で、(a)は突起部が断面正方形状の場合、(b)は同じく菱形状の場合である。
第9図は、本発明の第一実施形態に係るチャック付き密封袋の変更例を模式的に示すチャック部分の側面断面図で、各テープの端縁部に突起部を複数形成した場合である。
第10図は、本発明の第二実施形態に係るチャック付き密封袋を模式的に示す袋全体の側面断面図である。
第11図は、従来の袋開口部近傍に指滑り止め構造を備えた密封袋を示す、密封袋全体の側面断面図である。
第12図は、従来の袋開口部近傍に指滑り止め構造を備えた他の密封袋を示す、袋開口部近傍の要部側面断面図である。Technical field
The present invention relates to a sealing bag with a chuck provided with an occlusal chuck (fastener) for opening and closing and sealing a bag in the vicinity of an opening of a bag body made of a synthetic resin film or the like.
In particular, a protrusion that integrally protrudes from both the inner and outer surfaces of the bag body is provided at the tape edge of the chuck, and the protrusion is fused to the bag side on the inside not exposed from the opening of the bag body. Arranging without making it easy to improve the easy-openability of the bag without increasing the size of the chuck or the entire bag, and without causing melting or flattening of the protrusions at the time of bag making. The present invention relates to a sealing bag with a zipper suitable for a small sealing bag used for storing medicines, foods, miscellaneous goods and the like.
Background art
Generally, a sealed bag with a chuck is known in which a male and female biting type resin chuck is attached to an opening of a bag body formed of a synthetic resin film or the like. This type of sealed bag with a chuck is inexpensive and can be manufactured in large quantities, is lightweight, flexible and water-resistant, and can open and close an occlusal chuck. Since the inside can be easily sealed, for example, it is widely used as a container or bag for storing medicines, foods, miscellaneous goods and the like. A chuck provided in such a resin-made sealing bag has a pair of male and female articulating tools configured to be detachable on the surface of a resin-made tape, and the tape is thermally fused in the vicinity of the opening of the bag body. As the male and female parts of the bite engage and disengage, the opening of the bag is opened and closed, and the inside of the bag is sealed while the bite is engaged.
Here, when opening and closing the chuck provided in such a sealed bag, when closing the bag, the female part and the male part facing each other are separated from each other and the fingers are clamped with fingers, and the clamping part Can be engaged with each other by sequentially engaging the male and female portions by moving the pressed fingers along the opening. And when opening the chuck with the male and female parts engaged in this way, by grasping the opening edge of the bag body with fingers and pulling it to both sides, part of the female and male part of the engagement is released, By sequentially separating the chuck from the detached portion, the entire chuck can be disengaged and the bag can be opened.
However, in such a sealed bag with a chuck, since the bag body is formed of a thin film such as polypropylene, the opening edge of the bag that is pinched with a finger when opening the chuck is slippery, especially when the fingertip is wet. When a person with a weak force tries to open the finger, the finger slips and the chuck cannot be opened successfully.
In general, in this type of sealing bag, a pair of male and female bites constituting the chuck are bitten with a certain strength so that the inside of the bag can be surely sealed, and is not easily opened. For this reason, with conventional sealed bags where the gripping part of the bag is slippery, it is difficult to open the bag. Especially, bags for pharmaceuticals used by infants and the elderly, and food and miscellaneous goods used by housewives at home, etc. As a bag, there was a problem in terms of ease of use and ease of opening.
So far, in order to prevent finger slipping at the time of opening the resin sealing bag as described above and ease the difficulty of opening the chuck, it is possible to hook a finger by providing a protrusion or the like in the vicinity of the bag opening. Thus, a sealed bag with a non-slip structure has been proposed.
11 and 12 are cross-sectional views showing a conventional sealing bag having a finger-slip prevention structure proposed so far, FIG. 11 is a side sectional view of the whole sealing bag, and FIG. 12 is a bag opening. It is principal part side surface sectional drawing of the vicinity.
The sealing bag shown in FIG. 11 is proposed in Japanese Utility Model Laid-Open No. 3-19313, and has a chuck 111 (a “rail fastener” in the same publication) in which a pair of male and female occlusion tools 112 (112a, 112b) is formed. Are attached to the outside of the opening edge of the resin bag main body 101 so that the outer edge of the chuck 111 extends outward and bends as knobs 113a and 113b, and the knob 113a, Enlarged portions 114a and 114b having a triangular cross-section serving as finger slip preventing means are formed on the edge of 113b. According to this sealing bag, it is possible to open the chuck 111 without sliding the finger when the bag is opened by hooking the finger on the enormous portions 114a and 114b provided at the outermost end of the chuck 111.
Further, the sealed bag shown in FIG. 12 is proposed in Japanese Utility Model Laid-Open No. 5-76309, and is continuous with the outside of the opening edge of the bag body 201 as in the case of the sealed bag shown in FIG. Then, a chuck 211 ("rail-shaped fastener" in the publication) that forms a pair of male and female biting tools 212 (212a, 212b) is attached, and the outer edge of the chuck 211 is configured as knobs 213a, 213b, On the surface of the knobs 213a and 213b, a plurality of protrusions 214, 214. . . Is formed. According to this sealing bag, the plurality of protrusions 214, 214. . . Are formed at predetermined intervals, and the plurality of protrusions 214, 214. . . The abdomen of the finger can be fitted between the fingers, thereby preventing the finger from slipping when the chuck is opened.
However, in these sealed bags having a finger slip prevention structure that have been proposed in the past, as shown in FIGS. 11 and 12, the chucks are continuously connected outward from the opening side edge of the bag body. There is a problem that the entire bag including the chuck is increased in size because the outer edge of the chuck is extended further outward with the outer edge of the chuck as a knob. Such an increase in the size of the sealed bag by the chuck was not so much a problem in the case of a sealed bag in which the bag itself was enlarged in order to store large contents such as bedding and clothing. The effect is extremely large in the case of a sealed bag that has been reduced in size and thickness, such as those used for business purposes.
Moreover, in such a structure in which the chuck is continuous to the outside of the bag opening, the chuck itself is an opening, and there is nothing that covers the periphery of the chuck, so the contents may spill out when the chuck is opened, Foreign matter and the like are easily mixed in, and it has become a serious problem particularly in the case of small-sized sealed bags used for homes and medical purposes in which small objects, fine objects, liquids and the like are stored.
Furthermore, in the sealed bag in which the chuck is formed at the opening end of the bag as described above, there is a problem that the bag opening portion cannot be sealed (top seal). In this type of sealed bag, for example, in the case of a bag used for distribution, it is necessary to completely seal the inside of the bag, and it is necessary to seal all four sides of the bag including the opening portion on the chuck side. However, in a sealed bag in which a chuck is provided outside the opening of the bag and a gripping portion for preventing slipping is formed, the bag opening side cannot be sealed, and in particular, it cannot cope with a sealed bag for distribution. It was.
Moreover, in the anti-slip structure having a protrusion (enlarged part) at the outermost end of the chuck as in the sealed bag shown in FIG. 11, there is no continuous part from the enormous part to the outside. The force is concentrated only on the enormous part, and as pointed out in Japanese Utility Model Laid-Open No. 5-76309, the enormous part bites into the fingertip strongly, causing pain and numbness at the fingertip.
On the other hand, in the structure in which a plurality of protrusions are separately formed on both surfaces of the knob as in the sealing bag shown in FIG. 12, the force of the finger is dispersed to the plurality of protrusions formed at different positions. On the other hand, there was a problem that it was difficult to apply force to fingers.
Here, as a means for avoiding the problem of the conventional sealing bag in which the chuck is continuously fused to the outside of the bag body as described above, the entire chuck is downsized and disposed on the inner surface of the bag body. It is conceivable that non-slip means such as protrusions protrude from the inner surface side of the bag.
However, simply forming the ridge etc. by arranging the chuck on the inner surface of the bag main body can project the ridge etc. only on the inner surface side of the bag, and it is not always sufficient as a means for preventing finger slipping. I could not say. Further, when the chuck is fused to the bag body, the protrusions and the like disposed on the inner surface of the bag are melted and flattened together with the chuck, so that there is a possibility that the function does not function as a finger slip preventing means. Furthermore, in order to prevent such melting and flattening of the ridges, for example, it may be possible to form the ridges etc. long in advance so that the ridges have a certain length even after melting. If only the length is long, the ridges will easily fall down when the bag is made, making it difficult to manufacture, and the ridges will protrude long inside the bag, making it difficult to put fingers into the bag opening. There was also a possibility that the property might be impaired.
The present invention has been proposed in order to solve the above-described problems of the prior art, and is a protrusion that integrally protrudes from both the inner surface and the outer surface of the bag body at the tape edge of the chuck. In addition, the protrusions are disposed on the inner side of the bag body that is not exposed from the opening of the bag body without being fused to the bag side. Providing a sealing bag with a chuck that can improve the easy-openability of the bag without flattening, and is particularly suitable for a small sealing bag used for storing medicines, foods, sundries, etc. Objective.
Disclosure of the invention
In order to achieve the above object, a sealed bag with a chuck according to the present invention includes a bag body that opens to one side, a pair of tapes that are attached in the vicinity of the opening of the bag body, and that face each other along the opening of the bag body. And a chuck having a pair of male and female bites that are formed on opposite surfaces of the pair of tapes and are detachably occluded along the opening of the bag body so as to open and close the bag body. A sealing bag, comprising a protrusion formed on the edge of the bag body opening side edge of each of the pair of tapes, and provided with protrusions integrally projecting on the inner surface side and outer surface side of the bag body, The protrusion is configured to be positioned on the inner side of the opening edge portion of the bag body by attaching the pair of tapes to the inner side of the opening of the inner surface of the bag body.
According to the sealing bag with a chuck of the present invention having such a configuration, a protrusion serving as a means for preventing a slip of a finger when opening and closing the bag is provided along an edge of the chuck that opens and closes and seals the bag body. This protrusion is disposed inside the opening of the bag body together with the chuck. By positioning the chuck and protrusion on the inside of the bag body in this way, the chuck and anti-slip structure do not overhang outside the bag as in conventional sealed bags, and the entire size of the chuck and bag is reduced. can do.
In addition, since the entire chuck including the protrusion is housed in the bag body in this way, the opening edge of the bag body can be further extended to the outside of the chuck. The entire portion can be covered with the bag body, and contents are not spilled or foreign matter is not invaded when the sealed bag is opened and closed.
And the protrusion part of this invention used as the finger | toe slip prevention means of a sealing bag protrudes integrally in the inner surface side and outer surface side direction of a bag main body substantially uniformly in the state which the chuck | zipper stuck on the bag main body inner surface. For example, it is formed of a ridge having a circular cross-section, and the ridge is positioned inside the bag without being exposed from the bag body. By adopting such a configuration, the protruding portion integrally protrudes from the inner surface side and the outer surface side of the bag. Therefore, when the bag is opened and closed, the protruding portion is placed between the inner and outer surfaces of the bag with two fingers. It can be firmly clamped at the place. Moreover, since the protrusion is located inside the bag body, the opening edge of the bag extends to the outer side (the palm side of the finger to be sandwiched) of the protrusion sandwiched between fingers, and this extended bag edge The part can also be sandwiched with the fingers together with the protruding part.
Therefore, in the sealed bag of the present invention, the protruding portion protruding from the inner and outer surfaces of the bag can be held at one place, so that the protruding portion can be firmly held without the force being distributed and is extended from the protruding portion. By sandwiching the bag edge portion to be held together, the entire opening edge portion of the bag can be held without concentrating the force only on the projection portion. Accordingly, in the present invention, the sealing bag can be opened easily, smoothly and surely without causing finger slippage and without causing pain or numbness in the fingertip as in the case of conventional sealing bags. Will be able to. Moreover, the protrusions that can be held simultaneously at the same location from inside and outside of the bag are different from those on the inner surface side or outer surface side of the bag as compared with the protrusions of the conventional sealed bag that individually protrude on the inner surface side and outer surface side of the bag. The protrusion width itself can be reduced, making it difficult to manufacture due to the fall of the ridge when bags are made, etc., or the ridge protrudes long on the inner surface of the bag, making it difficult to put fingers into the opening. There is no need to do anything.
In the sealed bag of the present invention, when the pair of tapes are adhered to the inner surface of the bag body by heat fusion, the protrusions provided on the pair of tapes are thermally fused to the bag body inner surface. The structure is not worn. With this configuration, when a chuck having a protrusion on the edge is heat-sealed to the bag body, only the remaining portion excluding the protrusion is fused to the bag, and the protrusion is on the bag side. It can be prevented from fusing.
Generally, a chuck provided in a sealed bag made of synthetic resin is integrally bonded to the bag body by heat-sealing, but the entire chuck including the protrusions is heat-sealed as it is. Then, the protrusions are also melted and flattened by heat, and there is a risk that they will not function as finger slip prevention means. In the present invention, only the remaining portion excluding the protruding portion of the chuck is thermally fused to the bag side, and the protruding portion is not fused, thereby preventing the protruding portion from being melted and flattened. Can effectively function as the finger slip prevention means according to the present invention.
Further, in the sealed bag of the present invention, the protrusions can be arranged at the same position with respect to the depth direction of the bag body, or can be arranged at different positions. By configuring the protrusions disposed opposite the inner surface of the bag body to be disposed at different positions in the depth direction of the bag, the state where the chuck is engaged, that is, the sealed bag is closed In the state, the protruding portions facing each other do not interfere with each other. Thus, in the present invention in which interference between the protrusions does not occur, the outer shape of each protrusion can be set to an optimum size within the range of the distance between the tape facing surfaces facing each other at the time of chucking, The protrusions can be arbitrarily formed in a size and shape that allows the fingers to be easily caught and the fingers to be inserted between them, so that the easy-openability of the sealing bag can be further improved.
The size of the protrusion according to the present invention is such that when the protrusion is disposed at the same position in the depth direction of the bag body, the maximum width in the protruding direction on the inner surface side and outer surface side of the bag body is 0.3 mm. It is comprised so that it may become below the distance between tape opposing surfaces above. By setting it as such a structure, the protrusion part which opposes at the time of the occlusion of a chuck | zipper can be set so that it may become the maximum in the range which does not mutually interfere between tape opposing surfaces. In particular, if the maximum width of the bag body in the protruding direction on the inner surface side and outer surface side is 0.5 mm or more and 1/2 or less of the distance between the tape facing surfaces, it becomes easier to grip, and between the male and female projections. This is desirable because a gap can be provided to facilitate insertion of a finger.
In a small sealed bag used for pharmaceuticals and foods, for example, in the case of a tape having a tape thickness of about 0.15 to 0.16 mm, the distance between the tape facing surfaces facing each other at the time of chucking is about 1.5 mm. Generally, if the protrusions that protrude and face each other on the tape facing surface interfere with each other between the tape facing surfaces, it becomes difficult to put a finger between the protruding portions when opening the bag, and the easy-openability of the bag is impaired. It will be. On the other hand, if the protrusions are made small in order to improve the insertion of the fingers between the protrusions, for example, if the protrusion width of the protrusions is less than about 0.3 mm, the protrusions are too small and the finger will not be caught easily. , It will not function as a finger slip prevention means. Therefore, in the present invention, for example, with respect to a tape having a tape thickness of about 0.15 to 0.16 mm, the maximum width protruding to the inner and outer surface sides of the bag body is 0.3 mm or more, In addition, by setting the maximum width to be equal to or less than the distance between the tape-facing surfaces, desirably the maximum width is 0.5 mm or more and 1/2 (approximately 0.7 mm) or less of the distance between the tape-facing surfaces, Even when it is disposed facing the same position on the inner surface, the total protrusion width of the protrusions protruding between the tape facing surfaces is the distance between the tape facing surfaces (about 1.. 5 mm) so that the insertion property of the finger is not impaired. Thereby, in this invention, the sealing bag excellent in the easy-opening property in which both the catching property of a finger | toe and the easy insertion property were ensured can be provided.
On the other hand, when the protrusions are disposed at different positions in the depth direction of the bag body, the protrusions are sized so that the maximum width in the protruding direction on the inner surface side and outer surface side of the bag body is 0.3 mm or more. 0.0 mm or less, preferably the maximum width is 0.5 mm or more. In this case, in particular, it is desirable that the maximum width in the protruding direction of the inner surface side and the outer surface side of the bag body is 0.3 mm or more and not more than the distance between the tape facing surfaces, preferably the maximum width is 0.5 mm or more. With such a configuration, when the protrusions are arranged so as to face each other at different positions when the chuck is engaged, the protrusions can be formed larger in the maximum range of the distance between the tape facing surfaces. .
As described above, in a small sealed bag, when the tape has a tape thickness of about 0.15 to 0.16 mm, the distance between the tape facing surfaces when the chuck is engaged is about 1.5 mm. On the other hand, when the protrusion width is less than 0.3 mm, the catching property of the finger is deteriorated, and the protrusion does not function as an anti-slip means for the finger. Therefore, in the present invention, when the protrusions are opposed to each other at different positions on the inner surface of the bag body, for example, with respect to a tape having a tape thickness of about 0.15 to 0.16 mm, it protrudes toward the inner surface side and the outer surface side The entire width is 0.3 mm or more and a maximum of 2.0 mm or less, preferably 0.5 mm or more and a distance between the tape facing surfaces (about 1.5 mm) or less. As a result, the protruding portions of the tape are formed to be as large as possible within the range of the distance between the tape-facing surfaces without interfering with each other, further improving the anti-slip property of the fingers and facilitating the sealing bag. It becomes possible to further improve the openability.
And a projection part can be set as the structure which makes a cross-section circular shape protrusion, and can make the structure which makes a cross-section angle-shaped protrusion. Thus, the cross-sectional shape of the protrusion according to the present invention is not particularly limited as long as it is a protrusion that can integrally protrude on both the inner surface side and the outer surface side of the bag body. It can be a ridge, or a ridge having a square cross section such as a quadrangle or rhombus. That is, the projecting portion according to the present invention can be selectively set to have a cross-sectional shape optimal for a sealing bag to which the present invention is applied, according to the size of the sealing bag or chuck, the biting force of the chuck, and the like. By providing such a protruding portion, it is possible to realize a sealed bag with a chuck having excellent versatility and expandability.
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of a sealed bag with a chuck according to the present invention will be described with reference to the drawings.
[First embodiment]
First, a first embodiment of a sealing bag with a chuck according to the present invention will be described with reference to FIGS.
FIG. 1 is a side cross-sectional view of an entire bag schematically showing a sealed bag with a chuck according to a first embodiment of the present invention. FIG. 2 is a side sectional view of the chuck portion schematically showing the sealing bag with a chuck according to the present embodiment, where (a) shows a state in which the chuck is separated and (b) shows a state in which the chuck is engaged. FIG. 3 shows a sealed bag with a chuck according to the present embodiment, (a) is a front view of the whole bag, and (b) is an enlarged view of a portion indicated by a two-dot chain line in (a). FIG. 4 is a side cross-sectional view of the chuck portion for comparing the size of the protrusions in this embodiment and the conventional sealing bag, (a) is the first embodiment of the present invention, (b). Shows a conventional sealed bag.
As shown in these drawings, the sealed bag with a chuck according to the present embodiment includes a bag body 1 formed in a bag shape having an opening 1a opened on one side, and the vicinity of the opening 1a of the bag body 1. It is a sealed bag provided with a male and female occlusion type chuck 10 to be attached to.
A pair of protrusions 20 projecting from the inner and outer surfaces of the bag and serving as means for preventing slipping of the fingers when opening and closing the bag are formed on the edges of the pair of tapes 11 serving as the base material of the chuck 10 adhered to the inner surface of the bag body 1. (20a, 20b).
The bag body 1 is a resin bag formed in a bag shape opened to one side. In the bag body 1, usually two resin films (female side film 2 and male side film 3) formed in a flat rectangular shape or the like are overlapped, or one resin film is folded and overlapped. As shown in FIG. 3, three sides (or two sides) excluding one side that becomes the opening 1a are bonded together by means such as heat fusion (see the bonding unit 5 shown in FIG. 3). It is designed to be made into bags. Here, the resin film constituting the bag body 1 is generally a film obtained by laminating a biaxially stretched polypropylene film and a cast polypropylene film, and is cut into various sizes according to the contents to be stored. Bags are made.
The chuck 10 is an opening / closing means for opening and closing the one side opening 1a of the bag body 1 so as to be freely opened and closed. As shown in FIG. 1, a pair of tapes 11 ( 11a, 11b) and a pair of male and female bites 12 (12a, 12b) formed on the surface of the tape 11.
The pair of tapes 11 are belt-like members (see FIG. 3) that are attached to the inner surface of the bag body 1 so as to face each other along the opening 1a. As shown in FIG. It consists of a female-side tape 11a and a male-side tape 11b, which are the base material of 12b. The pair of tapes 11a and 11b is usually made of a synthetic resin such as polypropylene and is attached to the inner surface of the bag body 1 by heat fusion.
In the present embodiment, the pair of tapes 11a and 11b are attached to the inside of the bag from the opening 1a on the inner surface of the bag body 1 as shown in FIG. As will be described later, the protrusion 20 formed along the edge of the tape 11 is not exposed from the opening 1 a of the bag body 1.
The pair of biting tools 12 is a pair of male and female biting means formed on each surface of a pair of opposing tapes 11a and 11b, and as shown in FIG. 1, the female side formed on the female side tape 11a. It consists of the occlusal part 12a and the male side occlusal part 12b formed on the male side tape 11b, and both the occlusal parts 12a, 12b are arranged to face the corresponding positions on the inner surface side of the bag body 1. ing.
And as shown in FIG. 2, the opening part 1a of the bag main body 1 is sealed so that opening and closing is possible, when the female side occlusal part 12a and the male side occlusal part 12b engage so that occlusion is possible.
The pair of articulating tools 12 is usually formed integrally with the tape 11 serving as a base material by a method such as extrusion molding. Here, the pair of articulating tools 12 may have any configuration as long as it has an occlusal structure (chuck structure) that can seal the bag body 1 so as to be opened and closed. For example, in this embodiment, it is shown in FIG. Thus, a female side occlusal part 12a having a substantially C-shaped cross section having a slit on one side, and a male side occlusal part 12b having a bowl-like cross section that engages with the female side occlusal part 12a via the slit so as to be detachable. It consists of
In the present embodiment, a pair (one strip) of the pair of articulating tools 12 is provided on the surface of the tape 11, but it is sufficient that at least one set of the articulating tools 12 is provided. It is also possible to provide a plurality of articulating tools 12 such as a double chuck structure provided in heavy.
In the case of a chuck structure including a plurality of biting devices 12, since the airtightness of the bag body 1 can be more reliably maintained, a sealed bag that needs to keep the inside of the bag more highly airtight, such as a sealed bag for storing liquid. It is suitable as a chuck structure.
And the protrusion part 20 (20a, 20b) used as a finger | toe slip prevention means is formed in each edge part of a pair of tape 11 of the chuck | zipper 10 which consists of the above structures, respectively. The details of the protrusion 20 according to this embodiment will be described with reference to FIGS.
As shown in these drawings, the protrusions 20 of the present embodiment are a pair of ridge members respectively formed on the opening 1a side edge portions of the bag body 1 of the pair of tapes 11. Specifically, the protrusion 20 includes a female-side protrusion 20a formed on the female-side tape 11a and a male-side protrusion 20b formed on the male-side tape 11b, and both the protrusions 20a and 20b are opened. It arrange | positions along the part 1a and opposes the same position of the depth direction (drawing up-down direction) of the bag main body 1. As shown in FIG. The projecting portions 20a and 20b are integrally projected on the inner surface side and the outer surface side of the films 2 and 3 constituting the bag body 1, respectively. In this embodiment, in FIGS. As shown in the figure, it is formed in a ridge having a circular cross section.
Here, as shown in FIG. 4, the projecting portion 20 having a circular cross section has a protruding width toward the inner surface side and the outer surface side of the bag body 1 (W shown in FIG. 4 (a)). 1 And W 2 ) Is formed substantially evenly, and the entire maximum width (W shown in FIG. 4 (a)) in the protruding direction on the inner and outer surfaces of the bag is about 0.3 mm or more and less than the distance between the tape facing surfaces, preferably It is configured to be 0.5 mm or more and 1/2 or less (about 0.7 mm or less) of the distance between the tape facing surfaces.
In general, in a small sealed bag used for pharmaceuticals and foods, in the case of a tape (11a, 11b) having a thickness of about 0.15 mm, the distance between the tape facing surfaces facing each other when the chuck is engaged (FIG. 4 (a) D) shown in FIG. 1 is generally about 1.5 mm. In this embodiment, since the protrusions 20a and 20b are opposed to the same position on the inner surface of the bag, if the protrusions that protrude and face the tape facing surface interfere with each other between the tape facing surfaces, It becomes difficult to put a finger in between, and the easy-openability of the bag is impaired. On the other hand, the protrusion 20 is formed on the bag outer surface side (W in FIG. 4). 1 ) And bag inner side (also W 2 ) If the total protrusion width in the direction (also W) is less than, for example, about 0.3 mm, the protrusion is too small and the finger is not easily caught, and it does not function as a finger slip prevention means.
Therefore, in the present embodiment, for example, the maximum width W that protrudes toward the inner and outer surfaces of the bag body 1 is set to the size of the protrusions 20a and 20b with respect to a tape having a thickness of about 0.15 to 0.16 mm. Is set to be not less than 0.3 mm and not more than the distance between the tape facing surfaces. In this way, W 1 ≒ W 2 ≈0.67 mm, and assuming that the tape thickness is 0.15 mm, W≈0.67 (W 1 ) +0.67 (W 2 ) +0.15 (tape thickness) ≈1.5 mm (W), and the entire protrusion width (W) is not more than the distance between the tape facing surfaces.
Further, the maximum width W is desirably set to 0.5 mm or more and to be ½ (about 0.7 mm) or less of the distance between the tape facing surfaces. In this case, for example, W 1 ≒ W 2 If ≒ 0.28mm, including the tape thickness of 0.15mm, W ≒ 0.28 (W 1 ) +0.28 (W 2 ) +0.15 (tape thickness) ≈0.7 mm (W), and the entire protrusion width (W) can be reduced to ½ or less of the distance between the tape facing surfaces.
In this way, even when the protrusions 20a and 20b are disposed opposite to the same position on the inner surface of the bag body, the total protrusion width of the protrusions protruding between the tape-facing surfaces while ensuring finger catchability is ensured. Does not exceed the distance (about 1.5 mm) between the tape-facing surfaces so that the finger insertability is not impaired. Thereby, in this embodiment, a pair of protrusion part 20a, 20b used as the anti-slip | slip means of a finger can be formed in the largest extent in the range which does not interfere mutually, and finger catching property and easy insertion property are possible. Both can be secured in good condition.
Further, the protrusions 20 that protrude integrally and substantially uniformly to the inner surface side and the outer surface side of the bag body 1 can be sandwiched simultaneously from the inside and the outside of the bag by two fingers or the like in FIG. As shown, the protruding width of the protrusion of the conventional sealing bag (see FIG. 12) protruding individually on the inner surface side and outer surface side of the bag (see w in FIG. 4 (b)). 1 And w 2 ), The protrusion width on the inner surface side or outer surface side of the bag can be reduced, and as a result, the entire protrusion width can also be reduced compared to the conventional case (shown in FIG. 4 (a)). W and w shown in FIG. Therefore, in the sealed bag provided with the protruding portion 20 of the present embodiment, for example, when the bag body 1 is manufactured, the protrusion may fall down and the manufacture becomes difficult, or the protrusion protrudes long on the inner surface of the bag and the opening. There is no problem that it is difficult to put a finger in the bag, and it is possible to efficiently manufacture a small and easy-to-open sealing bag.
Furthermore, in this embodiment, as described above, the pair of tapes 11 are attached to the inner surface of the bag body 1 by heat fusion, but for the protrusions 20 formed on the tape 11, The bag body 1 is not heat-sealed. That is, in this embodiment, when the chuck 10 having the protrusion 20 on the tape edge is heat-sealed to the bag body 1 side, only the remaining tape portion excluding the protrusion 20 is fused to the bag. The protrusion 20 is not fused to the bag side (see FIG. 2).
The synthetic resin chuck 10 according to the present embodiment is integrally bonded to the bag body 1 by heat fusion as in the case of a normal sealed bag. If the entire chuck provided with is heat-sealed as it is, the protrusion 20 is melted by heat and flattened, and it may not function as a means for preventing finger slipping. Therefore, in the present embodiment, only the remaining portion of the tape 11 excluding the protruding portion 20 of the chuck 10 is heat-sealed to the bag side, and the protruding portion 20 is not fused. As a result, the protruding portion 20 is melted. , Flattening can be prevented, and the protrusion 20 can effectively function as a finger slip preventing means.
In addition, the entire chuck 10 having the protrusion 20 is accommodated in the bag body 1, and the opening edge of the bag body 1 extends outside the chuck 10. Therefore, the opening edge is fused. You can also top seal. In this type of sealed bag, for example, when used for distribution, in order to completely seal the inside of the bag, it is necessary to seal all four sides of the bag including the opening portion on the chuck side. In the sealed bag of the present embodiment, the opening edge of the bag body 1 extends to the outside of the chuck 10, so that the opening edge is top-sealed by heat sealing or the like as shown in FIG. (See the top seal portion 5a shown in FIGS. 5 (a) and 5 (b)). Thereby, even if it has the projection part 20, it can respond to the sealing bag for distribution | circulation in which a top sealing performance is not impaired and a high sealing performance is requested | required.
In addition, although the protrusion part 20 which concerns on this embodiment is forming the protruding item | line with a circular cross section in the tape 11 one by one as mentioned above, it is integrated in both the inner surface side of the bag main body 1, and an outer surface side. As long as it is a protruding protrusion that can be protruded, the cross-sectional shape and the number of stripes are not particularly limited. For example, as shown in FIG. 8, the projecting portion 20 may be a ridge having a square cross section such as a square (FIG. 8A) or a rhombus (FIG. 8B). For example, as shown in FIG. 9, a plurality of protrusions 20 may be formed on the end edge of each tape 11.
In the present embodiment, as described above, each protrusion 20 has a thickness corresponding to the tape thickness of about 0.15 to 0.16 mm and the distance between the tape facing surfaces (about 1.5 mm). Although the maximum width W is not more than the distance between the tape facing surfaces (about 1.5 mm), it is needless to say that this value can be appropriately changed according to the thickness of the tape and the distance between the tape facing surfaces. For example, when the distance between the tape facing surfaces exceeds 1.5 mm, the maximum width W of each protrusion 20 can be 1.5 mm or more. As described above, the shape, number, and size of the protruding portion 20 can be variously changed, and the sealing to which the present embodiment is applied according to the size of the bag body 1 or the chuck 10, the biting force of the chuck, and the like. It is possible to selectively set the projections 20 having the optimal cross-sectional shape and number of strips for the bag.
Next, the opening / closing operation | movement of the sealing bag with a chuck | zipper which concerns on this embodiment which consists of the above structures is demonstrated, referring FIG. 2, FIG. 6, FIG. FIG. 6 is a perspective view showing the opening operation of the sealing bag with a chuck according to the present embodiment as seen from above the bag, and FIG. 7 is a schematic cross-sectional view of the bag, similarly showing the opening operation of the sealing bag. It is explanatory drawing shown.
First, in the state where the occlusion of the chuck 10 provided in the bag body 1 is released (the state shown in FIG. 2A), the opening 1a is open. Arbitrary contents such as food and miscellaneous goods can be stored. After the contents are stored in the bag body 1, the bag body 1 can be sealed by closing the chuck 10.
When closing the chuck 10, the female side occlusal portion 12a and the male occlusal portion 12b (see FIG. 2 (a)) of the chuck 10 which are opposed and separated from each other are positioned with a finger, The occlusal portions 12a and 12 are engaged by pressing the sandwiched portion with a finger (see FIG. 2 (b)). Then, both the occlusal portions 12a and 12b can be sequentially engaged by moving the pressing finger along the opening, and the entire occlusal device 12 can be closed.
Next, when opening the chuck 10 in the state where the bite 12 is engaged (the state shown in FIG. 2 (b)), first, the opening edge of the bag body 1 is grasped with a finger, The pair of positioned protrusions 20 are each sandwiched between two fingers (see FIG. 6). At this time, since the protruding portion 20 protrudes integrally to the inner and outer surface side of the bag body 1, as shown in FIG. 7, both protruding portions 20a and 20b are respectively separated from the inner and outer surfaces of the bag with two fingers. It is clamped firmly in one place and is caught by the belly of the finger clamped by the protrusion 20. Further, since the opening edge of the bag body 1 extends outside the protrusion 20 (the palm side of the pinched finger), as shown in FIG. 20 is sandwiched between fingers.
In this state, when the bag body 1 is pulled to both sides, as shown in FIG. 6, a part of the occlusion of the female side occlusal part 12a and the male side occlusal part 12b is released, and the part from the occlusal part is sequentially released as it is. The occlusion of the entire bite 12 can be released by separating the chuck 10. As a result, the sealing by the chuck 10 is released, the bag body 1 can be opened and the contents can be taken in and out. After the contents are stored, the chuck 10 is closed and the bag body 1 is sealed in the same manner as described above. Can do.
As described above, according to the sealed bag with a chuck according to the present embodiment, along the edge portion of the chuck 10 that opens and closes and seals the bag body 1, the protruding portion that serves as a means for preventing slipping of the finger when opening and closing the bag. 20 and the protrusion 20 together with the chuck 10 are disposed so as to be located on the inner side of the opening 1a of the bag body 1, so that the chuck or the anti-slip structure is a bag like a conventional sealed bag. Thus, the chuck and the entire bag can be reduced in size. Further, in this embodiment in which the entire chuck 10 including the protrusion 20 is housed in the bag body 1 in this manner, the opening edge of the bag body 1 further extends outside the chuck 10, and the chuck 10 10 is covered with the side films 2 and 3 of the bag body 1 so that the contents are not spilled and foreign matter does not enter when the sealing bag is opened and closed. It is also possible to make a top seal.
And in this embodiment, the projection part 20 used as the finger | toe slip prevention means of a sealing bag is substantially equal in the inner surface side and outer surface side direction of the bag main body 1 in the state where the chuck 10 is adhered to the inner surface of the bag main body 1. Since the projecting ridges are formed so as to be integrated with the projecting ridges having a circular cross-section and the like, and the ridges are located inside the bag without being exposed from the opening 1a of the bag body 1, Can firmly hold the protrusion 20 integrally projecting from the inner surface and the outer surface of the bag body 1 at one location from the inner and outer surfaces of the bag with two fingers.
Moreover, since the protrusion 20 is located inside the bag body, the bag opening edge extends further to the outside of the protrusion 20 sandwiched between fingers (the palm side of the finger to be sandwiched), The projection 20 can be held with a finger.
Therefore, according to the sealed bag of the present embodiment, since the protruding portion 20 protruding to the inner and outer surfaces of the bag can be sandwiched at one place, the protruding portion 20 can be firmly held without the force being dispersed, and the protruding portion Since the bag edge part extended from the part 20 can also be clamped together, a bag edge part can be hold | maintained, without force concentrating only on the projection part 20. FIG. Accordingly, the sealing bag can be opened easily, smoothly and surely without causing finger sliding and without causing pain or numbness at the fingertip as in the case of a conventional sealing bag.
In addition, the protrusions 20 that can be held at the same place from the inside and outside of the bag in this way are compared with the inner surface side of the bag body 1 and the inner surface side of the bag body 1 as compared with the protrusions of a conventional sealed bag that protrudes individually on the outer surface side Alternatively, the width of each protrusion on the outer surface side can be reduced, making it difficult to manufacture the bag when the bag is made as in the conventional case, making it difficult to manufacture, or the protrusion protruding longer on the inner surface of the bag. There is no longer any difficulty in putting fingers into the club.
Furthermore, in this embodiment, when the chuck 10 having the protrusions 20 on the respective edges of the tape 11 is heat-sealed to the bag body 1, only the remaining portion of the tape 11 excluding the protrusions 20 is placed on the bag side. Since the projection 20 is not fused to the bag side, the projection 20 can be prevented from melting and flattening, and the projection 20 is prevented from slipping on the finger of the sealing bag according to the present embodiment. It can function effectively as a means.
[Second Embodiment]
Next, a second embodiment of the sealed bag with a chuck according to the present invention will be described with reference to FIG. FIG. 10 is a side cross-sectional view of the entire bag schematically showing the zippered sealing bag according to the second embodiment of the present invention.
The sealed bag with a chuck according to the present embodiment shown in the figure is a modification of the first embodiment described above, and the protrusions disposed opposite to the same position in the bag body 1 in the first embodiment. 20 is arranged at a different position with respect to the depth direction of the bag body 1. Other components are the same as those in the first embodiment, and the same components are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted.
Specifically, as shown in FIG. 10, the protrusion 20 according to the present embodiment is such that the male protrusion 20b is more than the female protrusion 20a in the depth direction of the bag body 1 (the vertical direction in the drawing). It arrange | positions so that it may be located inside a bag, and the position of both projection part 20a, 20b differs about 1 mm in the depth direction of the bag main body 1. FIG. In this embodiment, as in the first embodiment, the protruding width of the protrusion 20 formed in a circular cross section toward the bag inner surface and the outer surface (W in FIG. 4A). 1 And W 2 The maximum width in the protruding direction on the inner and outer surfaces of the bag (see W shown in FIG. 4 (a)) is 0.3 mm to 2.0 mm, preferably the maximum width is 0.5 mm. The configuration is as described above.
As described above, in the case of a small sealing bag having a thickness of about 0.15 to 0.16 mm, the distance between the tape facing surfaces when the chuck is engaged is about 1.5 mm. On the other hand, the protrusion 20 has a bag outer surface side (W 1 ) And bag inner side (W 2 When the total protrusion width (W) in the) direction is less than, for example, about 0.3 mm, the catching property of the finger is deteriorated and the finger does not function as a slip prevention means.
Therefore, in the present embodiment, the maximum width W protruding to the inner and outer surface sides of the bag body 1 is 0.3 mm or more and 2.0 mm or less at the maximum by making the protrusions 20 face each other at different positions on the inner surface of the bag body. Desirably, the maximum width W is 0.5 mm or more and 1.5 mm or less (the distance between the tape facing surfaces).
At the position where the opposing protrusions 20 do not interfere with each other, the maximum is W 1 ≒ W 2 If the tape thickness is 0.15 mm, W≈1.5 + 1.5 + 0.15≈3.0 mm, and W is set to a maximum of twice the distance between the tape facing surfaces. It becomes possible. However, if W exceeds about 2.0 mm, it is difficult to put fingers and hands, and the openability may be impaired. Therefore, in the present embodiment, by disposing the protrusions 20 at different positions in the bag body 1, the interference between the protrusions is eliminated, and the distance between the tape facing surfaces that does not impair the unsealing property is maintained. The protrusion 20 can be formed as large as possible within the range.
In the present embodiment, the maximum width W of each protrusion 20 is set to 2.0 mm, preferably 1.5 mm or less, corresponding to the distance between the tape facing surfaces (about 1.5 mm). Of course, as in the case of the first embodiment described above, it is possible to appropriately change according to the distance between the tape facing surfaces. For example, when the distance between the tape facing surfaces exceeds 1.5 mm, each protrusion 20 The maximum width W can be set to 0.3 mm or more and less than the distance between the opposing surfaces. Further, the positions of the protrusions 20a and 20b that are different in the depth direction of the bag body 1 are also about 1 mm in the present embodiment, but this is also the size of the protrusions 20, the bag body 1, the bite 12, and the like. It goes without saying that it can be appropriately changed according to the sheath.
As described above, according to the sealed bag with a chuck of the present embodiment, the protrusions 20 disposed to face the inner surface of the bag body 1 are disposed at different positions in the bag depth direction. Therefore, it is possible to prevent the opposing protrusions from interfering with each other in a state where the bite 12 of the chuck 10 is engaged, that is, in a state where the sealing bag is closed. Thus, the outer shape of the protrusion 20 according to the present embodiment can be set to an optimum size within the range of the distance D between the tape facing surfaces facing each other when the chuck is engaged, and the finger is easily caught. And the protrusion part 20 which consists of a magnitude | size and shape which is easy to insert a finger | toe can be formed arbitrarily, and the easy-opening property of a sealing bag can further be improved.
[Example]
Hereinafter, the Example of the sealing bag with a chuck | zipper which concerns on this invention is described more concretely, giving a comparative example. In the following examples, the sealed bags shown in the above-described embodiments are manufactured based on the following specific conditions.
[Example 1]
(1) The chuck (tape and bite) was made of polypropylene.
(2) The protrusion at the end of the tape had a round cross section, and the diameter of the circular cross section of the protrusion was 0.3 mm.
(3) The position of the protrusion was formed so as to be the same position on the male side and the female side, corresponding to the sealing bag shown in the first embodiment.
(4) The bag body was formed using a film obtained by laminating a biaxially stretched polypropylene film and a cast polypropylene film.
(5) The tape part excluding the protruding part at the end of the tape was fused to the film of the bag body, and the protruding part was not fused to the bag body.
[Example 2]
The protrusion at the end of the tape was circular in cross section and the diameter was 0.5 mm. Others were the same as in Example 1.
[Example 3]
The protrusion at the end of the tape was circular in cross section and the diameter was 0.7 mm. Others were the same as in Example 1.
[Example 4]
The protrusion at the end of the tape was circular in cross section and the diameter was 1.0 mm. Others were the same as in Example 1.
[Example 5]
The protrusion at the end of the tape was circular in cross section and the diameter was 1.5 mm. Others were the same as in Example 1.
[Example 6]
The protrusion at the end of the tape was circular in cross section and the diameter was 0.3 mm. Further, the positions of the protrusions were shifted by 1 mm between the male side and the female side, corresponding to the sealing bag shown in the second embodiment described above. Others were the same as in Example 1.
[Example 7]
The protrusion at the end of the tape was circular in cross section and the diameter was 1.0 mm. Further, the positions of the protrusions were shifted by 1 mm between the male side and the female side, corresponding to the sealing bag shown in the second embodiment described above. Others were the same as in Example 1.
[Example 8]
The protrusion at the end of the tape was circular in cross section and the diameter was 1.5 mm. Further, the positions of the protrusions were shifted by 1.5 mm between the male side and the female side, corresponding to the sealing bag shown in the second embodiment described above. Others were the same as in Example 1.
[Example 9]
The protrusion at the end of the tape was circular in cross section and the diameter was 2.0 mm. Further, the positions of the protrusions were shifted by 2.0 mm on the male side and the female side corresponding to the sealing bag shown in the second embodiment described above. Others were the same as in Example 1.
[Comparative Example 1]
The protrusion at the end of the tape was circular in cross section and the diameter was 0.2 mm. Others were the same as in Example 1.
[Comparative Example 2]
The protrusion at the end of the tape was circular in cross section and the diameter was 2.0 mm. Others were the same as in Example 1.
[Comparative Example 3]
The protrusion at the end of the tape was circular in cross section and the diameter was 2.5 mm. Further, the positions of the protrusions were shifted by 2.5 mm between the male side and the female side. Others were the same as in Example 1.
[Comparative Example 4]
A chuck “P-560” (manufactured by Idemitsu Unitech Co., Ltd.) provided with a protruding strip projecting only inside the bag was used as the chuck (tape with bite). Others were the same as in Example 1.
[Comparative Example 5]
A chuck with no protrusions, protrusions, etc. at the tape end was used. Others were the same as in Example 1.
An opening test of the sealed bag manufactured under the conditions of Examples 1 to 9 and Comparative Examples 1 to 5 was performed, and the ease of grasping and the ease of inserting the finger were investigated, and the pin on the side seal portion of the bag body The occurrence of holes and the deformation of the protrusions after bag making were investigated.
The survey results are shown in Table 1 below.
Figure 2003080458
The meanings of the symbols shown in Table 1 are as follows.
・ Opening feeling 1 ◎: Very easy to grip, ○: Easy to grip, △: Slightly difficult to grip, ×: Difficult to grip
・ Opening feeling 2 ◎: Very easy to insert fingers, ○: Easy to insert, △: Slightly difficult to insert, ×: Difficult to insert
・ Deformation of protrusion after bag making ◎: No deformation, △: Slight deformation (falling)
As is apparent from Table 1, when the protruding portion is located at the same position on the male side tape and the female side tape, first, as shown in Example 1, when the diameter of the protruding portion is 0.3 mm, It was confirmed that the ease of putting in the finger was good, although the ease dropped slightly. And as shown in Example 2 and Example 3, it was confirmed that the ease of grasping and the ease of putting in the finger were good by setting the diameter of the protrusions in the range of 0.5 mm to 0.7 mm. It was. Moreover, as shown in Example 4 and Example 5, when the diameter of the protrusion is in the range of 1.0 mm to 1.5 mm, the ease of grasping is slightly reduced, but the ease of grasping is very good. It was confirmed. In this range, the ease of grasping is not impaired because the diameter of the protrusion is small as in Comparative Example 1, and the ease of putting a finger is not large because the diameter of the protrusion is large as in Comparative Example 2. It was confirmed that nothing worsened.
Moreover, as shown in Examples 6 to 9, by shifting the position of the protrusion in the range of 1 mm to 2.0 mm on the male side and the female side, the diameter of the protrusion can be increased to 2.0 mm, It was confirmed that the ease of grasping and the ease of putting in the finger were further improved. In this case, as shown in Comparative Example 3, the diameter of the protruding portion is not too large, and the gripping and finger insertion are not impaired, and the protruding portion does not fall or deform during bag making. Was also confirmed.
In addition, the sealing bag with a chuck | zipper of this invention is not limited only to embodiment mentioned above, It cannot be overemphasized that various change implementation is possible in the scope of the present invention.
For example, in the above-described embodiment, as the sealing bag, a comparatively small sealing bag that stores medicines, foods, miscellaneous goods, and the like has been described as an example. However, the use and the object of the sealing bag are not limited to this case, The present invention can be applied to any bag of any application and function as long as it is a sealed bag with a chuck provided with a chuck that can seal the inside of the bag in a resin bag body. Therefore, not only a small sealed bag, but also a relatively large sealed bag, a sealed bag with a check valve for inserting a nozzle for degassing and compressing the inside of the bag, a chuck slider that serves as a chuck opening and closing device, etc. The present invention can also be applied to various types of sealed bags with a chuck such as a sealed bag.
Industrial applicability
As described above, according to the sealing bag with a chuck according to the present invention, the protrusions that integrally project on both the inner surface and the outer surface of the bag main body are provided on the tape edge portion of the chuck, and the protrusions are Arranged on the inner side that is not exposed from the opening of the bag body without being fused to the bag side, so that the entire size of the chuck and bag is not increased, and melting, flattening, etc. do not occur during bag making, The easy-openability of a bag can be improved reliably. Thereby, in particular, a sealed bag with a chuck suitable for a small sealed bag used for storing medicines, foods, miscellaneous goods and the like can be realized.
[Brief description of the drawings]
FIG. 1 is a side cross-sectional view of an entire bag schematically showing a sealed bag with a chuck according to a first embodiment of the present invention.
FIG. 2 is a side cross-sectional view of a chuck portion schematically showing a sealing bag with a chuck according to the first embodiment of the present invention, where (a) shows a state where the chuck is separated and (b) shows a state where the chuck is engaged. It is.
Fig. 3 shows a sealed bag with a chuck according to the first embodiment of the present invention, (a) is a front view of the entire bag, and (b) is an enlarged view of a portion indicated by a two-dot chain line in (a). .
FIG. 4 is a side cross-sectional view of a chuck portion for comparing the size of the protrusions of the first embodiment of the present invention and the conventional sealing bag, (a) is the first embodiment of the present invention, ( b) shows a conventional sealed bag.
FIG. 5 is a view showing a state in which the opening side of the sealing bag with a chuck according to the first embodiment of the present invention is top-sealed, (a) is a side cross-sectional view, and (b) is an enlargement of the front part of the bag. FIG.
FIG. 6 is a perspective view showing the opening operation of the sealing bag with a chuck according to the first embodiment of the present invention as seen from above the bag.
FIG. 7 is an explanatory view schematically showing a cross section of the bag, showing the opening operation of the sealing bag with a chuck according to the first embodiment of the present invention.
FIG. 8 is a side cross-sectional view of a chuck portion schematically showing a modified example of the sealing bag with a chuck according to the first embodiment of the present invention. FIG. 8 (a) shows a case where the protrusion has a square cross section. Is the case of a diamond shape.
FIG. 9 is a side cross-sectional view of a chuck portion schematically showing a modified example of the sealing bag with a chuck according to the first embodiment of the present invention, and shows a case where a plurality of protrusions are formed on the edge portion of each tape. .
FIG. 10 is a side cross-sectional view of the entire bag schematically showing the zippered sealing bag according to the second embodiment of the present invention.
FIG. 11 is a side sectional view of the whole sealing bag showing a sealing bag having a finger slip prevention structure in the vicinity of the conventional bag opening.
FIG. 12 is a side cross-sectional view of the main part in the vicinity of the bag opening, showing another sealing bag having a finger slip prevention structure in the vicinity of the conventional bag opening.

Claims (13)

一側に開口する袋本体と、
この袋本体の開口近傍に貼着され、当該袋本体の開口に沿って対向する一対のテープ、及びこの一対のテープの対向面に形成され、前記袋本体の開口に沿って咬脱自在に咬合して当該袋本体を開閉自在に密封する雌雄一対の咬合具を有するチャックと、を備えるチャック付き密封袋であって、
前記一対の各テープの前記袋本体開口側端縁部に形成される凸条をなし、当該袋本体の内面側及び外面側に一体的に突出する突起部を備え、
この突起部が、前記一対のテープが前記袋本体内面の前記開口内側に貼着されることにより、当該袋本体の開口縁部より内側に位置することを特徴とするチャック付き密封袋。
A bag body that opens to one side;
A pair of tapes attached near the opening of the bag body and opposed along the opening of the bag body, and formed on the opposing surfaces of the pair of tapes, biting freely along the opening of the bag body A zipper having a pair of male and female bites that seals the bag body so as to be openable and closable,
Forming a ridge formed at the bag body opening side edge of each of the pair of tapes, and including a protrusion that integrally projects on the inner surface side and the outer surface side of the bag body;
The projecting portion is located on the inner side of the opening edge portion of the bag body by attaching the pair of tapes to the inner side of the opening of the inner surface of the bag body.
前記一対のテープが前記袋本体の内面に熱融着により貼着される場合に、
当該一対のテープに備えられる前記突起部が、前記袋本体内面に熱融着されない請求の範囲第1項記載のチャック付き密封袋。
When the pair of tapes are attached to the inner surface of the bag body by heat fusion,
The sealed bag with a chuck according to claim 1, wherein the protrusions provided on the pair of tapes are not heat-sealed to the inner surface of the bag body.
前記突起部が、前記袋本体の深さ方向に対し、同じ位置に配設される請求の範囲第1項又は第2項記載のチャック付き密封袋。The sealed bag with a chuck according to claim 1 or 2, wherein the protrusion is disposed at the same position with respect to the depth direction of the bag body. 前記突起部の、前記袋本体の内側が及び外側突出方向の最大幅が0.3mm以上テープ対向面間距離以下である請求の範囲第3項項記載のチャック付き密封袋。The sealed bag with a chuck according to claim 3, wherein a maximum width of the protrusion in the inner side of the bag body and in an outer protruding direction is not less than 0.3 mm and not more than a distance between the tape facing surfaces. 前記突起部の、前記袋本体の内面側及び外面側突出方向の最大幅が0.5mm以上テープ対向面間距離の1/2以下である請求の範囲第3項記載のチャック付き密封袋。The sealed bag with a chuck according to claim 3, wherein a maximum width of the protruding portion in the protruding direction of the inner surface side and the outer surface side of the bag body is 0.5 mm or more and 1/2 or less of the distance between the tape facing surfaces. 前記突起部が、前記袋本体の深さ方向に対し、異なる位置に配設される請求の範囲第1項又は第2項記載のチャック付き密封袋。The sealed bag with a chuck according to claim 1 or 2, wherein the protrusions are disposed at different positions with respect to the depth direction of the bag body. 前記突起部の、前記袋本体の内面側及び外面側突出方向の最大幅が0.3mm以上2.0mm以下である請求の範囲第6項記載のチャック付き密封袋。The sealed bag with a chuck according to claim 6, wherein a maximum width of the protruding portion in the protruding direction of the inner surface and the outer surface of the bag body is 0.3 mm or more and 2.0 mm or less. 前記突起部の、前記袋本体の内面側及び外面側突出方向の最大幅が0.5mm以上2.0mm以下である請求の範囲第6項記載のチャック付き密封袋。The sealed bag with a chuck according to claim 6, wherein a maximum width of the protruding portion in the protruding direction from the inner surface side to the outer surface side of the bag body is 0.5 mm or more and 2.0 mm or less. 前記突起部の、前記袋本体の内面側及び外面側突出方向の最大幅が0.3mm以上テープ対向面間距離以下である請求の範囲第6項記載のチャック付き密封袋。The sealed bag with a chuck according to claim 6, wherein a maximum width of the protruding portion in the protruding direction on the inner surface side and the outer surface side of the bag body is not less than 0.3 mm and not more than the distance between the tape facing surfaces. 前記突起部の、前記袋本体の内面側及び外面側突出方向の最大幅が0.5mm以上テープ対向面間距離以下である請求の範囲第6項記載のチャック付き密封袋。The sealed bag with a chuck according to claim 6, wherein a maximum width of the protruding portion in the protruding direction of the inner surface and the outer surface of the bag body is not less than 0.5 mm and not more than a distance between the tape facing surfaces. 前記突起部の、前記袋本体の深さ方向のずれが1.0mm〜2.0mmの範囲である請求の範囲第6項記載のチャック付き密封袋。The sealed bag with a chuck according to claim 6, wherein a deviation of the protrusion in the depth direction of the bag body is in a range of 1.0 mm to 2.0 mm. 前記突起部が、断面円形状の凸条をなす請求の範囲第1項,第2項,第4項,第5項,第7項〜第11項のいずれかに記載のチャック付き密封袋。The sealed bag with a chuck according to any one of claims 1, 2, 4, 5, and 7 to 11, wherein the protruding portion forms a convex section having a circular cross section. 前記突起部が、断面角形状の凸条をなす請求の範囲第1項,第2項,第4項,第5項,第7項〜第11項のいずれかに記載のチャック付き密封袋。The sealing bag with a chuck according to any one of claims 1, 2, 4, 5, and 7 to 11, wherein the protruding portion forms a ridge having an angular cross section.
JP2003578235A 2002-03-27 2003-03-27 Sealed bag with chuck Expired - Lifetime JP4423045B2 (en)

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