JP3597372B2

JP3597372B2 - Flexible container

Info

Publication number: JP3597372B2
Application number: JP6423998A
Authority: JP
Inventors: 貴宏若山
Original assignee: Riso Kagaku Corp
Current assignee: Riso Kagaku Corp
Priority date: 1998-02-27
Filing date: 1998-02-27
Publication date: 2004-12-08
Anticipated expiration: 2018-02-27
Also published as: JPH11240542A

Description

【０００１】
【発明の属する技術分野】
本発明は、液体、特に孔版印刷用インキなどの高粘度液体を収容するのに好適な可撓容器に関し、さらに詳しくは、内容物の未充填時には扁平であり、内容物の充填に従い筒状に膨み、内容物が大部分取り出された後は扁平な形状にすることが可能な膨縮自在の容器に関する。
【０００２】
【従来の技術】
樹脂フィルム等の可撓性の内袋を段ボールや板紙等の外箱内に収容した所謂バッグインボックス、バッグインカートンと呼ばれる液体用包装用容器は良く知られており、高粘度液体等の収容に用いられている。かかる容器は、内容物である高粘度液体の排出に伴い、内袋は収縮して外形寸法が減少するが、外箱の形状は変わらないため、廃棄処理する場合、スペースを取り、または、廃棄スペースを小さくするには外箱を潰したりする手間を要する。
【０００３】
【発明が解決しようとする課題】
そこで、図１に示すように、柔軟な樹脂フィルムで構成され、扁平な形状から筒状の拡張形状に変形し得る密封袋体１と、該袋体１の上端部に設けられた内容物取出口２と、内容物充填前の該袋体１の扁平な形状においてその対向する両側面に添着された可撓性板状体３１及び３２とからなる可撓容器を作成することが考えられる。かかる可撓容器は、図２に示すように、内容物充填時には、袋体１の拡張に合わせて可撓性板状体３１及び３２が湾曲し、全体的に筒状の形態をとる。そして、取出口２にポンプ等を連結して内容物を吸い上げて取り出す場合、特に内容物が高粘度液体であるときは、これを取り出すに従って、密封袋体１の底部が取出口２の方向へ移動するとともに密封袋体１の下半部が袋体１の内側にまくれかえるように反転しつつ変位し、容積を縮小するとともに扁平な形状に戻る。したがって、この容器は、内容物の充填前は扁平で容積が小さく保管、運搬等にスペースをとらず、内容物充填時には充填量に応じた大きさとなり、内容物を使いきった後は小さな容積に戻る点で好都合である。
【０００４】
図１及び図２に示される容器は、使用時、図３に示されるように、内容物取出口２を外方に露出させて収容するカートリッジ４に装填される。このとき、該取出口２の首部２１にカートリッジ４の端壁に開けられた穴の縁辺が嵌合するため、該取出口２はカートリッジ４に固定される。しかし、内容物を取り出す際、袋体１の内部には減圧によって容器の内方への引張力が働く。その結果、図３に示されるように、袋体１は、内容物取出口２と板状体３１及び３２との間の板状体３１に被覆されていない領域で図３の矢印の方向に収縮する傾向があることを本発明者は見い出した。このように袋体１が収縮すると、図３の矢印で示すように、板状体３１及び３２が取出口２の方向に移動しようとする。さらに、板状体３１及び３２が板紙や段ボールからなる場合、図４に示すように、板状体３１及び３２の取出口側の端部が板状体の切断面であるため、端部から層間剥離３９が生じることがある。上記のような板状体３１及び３２の移動や層間剥離３９が拡大すると、板状体３１及び３２と取出口２との間で袋体１が収縮してインキの流路を閉塞し、内容物の取り出しを阻害し、内容物の全量の取り出しを困難にする。この問題は、特に内容物が高粘度である場合に著しい。
【０００５】
そこで、本発明は、上記のような可撓容器において、内容物取出時の袋体内の流路の閉塞を防止することにより、内容物の全量排出をスムーズに行えるようにすることを目的とする。
【０００６】
【課題を解決するための手段】
上記の目的は、本発明によれば、柔軟な樹脂フィルムで構成され、扁平な形状から筒状の拡張形状に変形し得る密封袋体と、前記袋体の端部に設けられた内容物取出口と、前記袋体の扁平な形状においてその両側面に添着され、前記袋体の拡張に合わせて変形可能な板状体とからなる可撓容器であって、該容器は、内容物の取出時に前記取出口と前記板状体との間の領域で前記袋体が収縮するのを制限する特定の手段を備えていることを特徴とする可撓容器によって達成される。
【０００７】
本発明によれば、内容物取出時に容器内の減圧により、密閉袋体に内方への引張力が働いても、該袋体は内容物取出口と板状体との間の領域で収縮して容器内方へ移動したとしても、その移動が一定範囲に抑制されるので、該袋体中の流路が狭窄により閉塞を起こすには至らず、内容物の全量をスムーズに取り出すことができる。
【０００８】
本発明において、板状体は、可撓性を有し、手などによって容易に折り曲げ可能なものであれば、金属板、プラスチック板、板紙、段ボール等の如何なる材質のものであってもよいが、廃棄物処理上、板紙又は段ボールとすることが好ましい。板状体は、密閉袋体の扁平な形状においてその各側面に添着された１対のシートであってもよく、また、両側面を挟むように折り返して添着された１枚のシートであってもよい。また、内容物の取出後に、密封袋体の下半部はその上半部内にまくれ上がるため、板状体は、密封袋体の下半部を被うことは必ずしも必要ではなく、密閉袋体の上半部を被う寸法であれば足りる。
【０００９】
本発明において、密封袋体を構成する樹脂フィルムは、内容物の種類を考慮して、セロハン、ポリエチレンフィルム、ポリプロピレンフィルム、ポリエステルフィルム、ナイロンフィルム、ポリスチレンフィルム、ポリ塩化ビニルフィルム、ポリ塩化ビニリデンフィルム、ポリビニルアルコールフィルム、ポリカーボネートフィルム、ＥＶＯＨフィルム、フッ素樹脂フィルム、ポリメチルメタクリレートフィルム、ポリブテンフィルム、アルミ箔、ＳｉもしくはＡｌ等の酸化物薄膜を形成した上記フィルム、ＰＶＤＣ・ＥＶＯＨ・ワックス等をコーティングした上記フィルム等を一層または多層の形態で用いることができる。
【００１０】
本発明において、板状体は密封袋体に対して容易に分離しない程度に添着されていればよい。特に、内容物の取出後に、密封袋体の下半部は板状体から剥離してその上半部内にまくれ上がるため、密封袋体の下半部と板状体とは剥離可能に接着されているか、又は、接着されていなくてもよい。かかる接着剤としては、ユリア樹脂、メラミン樹脂、フェノール樹脂、エポキシ樹脂、酢酸ビニル樹脂、アクリル樹脂、シアノアクリレート系接着剤、ポリウレタン系接着剤、ＥＶＡ等の各種接着剤が用いられる。また、接着剤の形態は、ドライラミネート型、水性ドライラミネート型、無溶剤型、電子線硬化型、紫外線硬化型、ホットメルト型等から適宜選択することができる。
【００１１】
【発明の実施の形態】
以下、図５乃至図９を参照して、本発明の可撓容器の具体例を説明する。なお、図示の具体例は例示であり、本発明は以下の具体例のみに限定されるものではない。
【００１２】
図５の具体例は、内容物取出口２の台座２２の袋体１内部側に、容器の底部に向かって延在する突起２３を形成した以外、図１及び図２の容器と同様の構成を有する。取出口２は台座２２の全面又は少なくとも周面を袋体１に接着することにより袋体１と一体化されている。図５の具体例では、突起２３は、台座２２の周縁に沿って略等角度間隔で複数個設けられている。かくして、内容物の取出時に、袋体１内の減圧により、内容物取出口２と板状体３１及び３２との間の領域で袋体１が収縮したとしても、袋体１の内方への移動は突起２３で制限されるため、袋体１が狭窄することはなく、内容物の取り出しをスムーズに行うことができる。
【００１３】
図６の具体例は、内容物取出口２の台座２２の径を大きくした以外、図１及び図２の容器と同様の構成を有する。取出口２は台座２２の全面又は少なくとも周面を袋体１に接着することにより袋体１と一体化されている。かくして、内容物の取出時に、袋体１内の減圧により、内容物取出口２と板状体３１及び３２との間の領域で袋体１が収縮したとしても、当該領域における袋体１の寸法が短いため、袋体１の内方への移動は狭窄に至らない程度に制限され、内容物の取り出しをスムーズに行うことができる。台座２２の形状は、円形に限らず、楕円、多角形等であってもよい。なお、この具体例において、台座２２の最大径又は幅ｌは、内容物充填時の袋体１の筒状拡張形状における横断面（すなわち、当該筒状形状の軸線に概略直交する面）の最大径又は幅Ｌの半分以上の寸法とすることが好ましい。
【００１４】
図７の具体例は、可撓容器については図１及び図２のものと同様である。しかし、カートリッジ４の内部側壁には、板状体３１及び３２の取出口２側の端部と当接又は係合する突起４１が設けられている。かくして、内容物の取出時に、袋体１内の減圧により、内容物取出口２と板状体３１及び３２との間の領域で袋体１が収縮して板状体３１及び３２が取出口２の方向へ移動しようとしたとしても、この移動は、板状体３１及び３２の端部が該突起４１に当接して阻止されるため、袋体１が狭窄することはなく、内容物の取り出しをスムーズに行うことができる。なお、この突起４１は、板状体３１及び３２の取出口２側の端部と平行に、カートリッジの内部側壁に連続して環状に設けられたものであってもよいし、断続的なものであってもよい。かかる移動阻止手段は、カートリッジ４の内径を取出口２側で小さくして板状体３１及び３２の端部と当接する段部（図示せず）を形成することによって構成してもよく、また、板状体３１及び３２の外側面に凹部又は凸部（図示せず）を設け、該凹部又は凸部と係合して板状体３１及び３２の取出口２方向への移動を阻止する凸部又は凹部をカートリッジ４の内部側壁に形成することによって構成してもよい。また、図７（ｂ）に示されるように、突起４１を備えたスペーサー４３を、カートリッジ４の取出口２側の内方端壁４２と板状体３１及び３２の取出口２側の端部との間に配置することによって同様の移動阻止手段を形成することもできる。このスペーサー４３は、カートリッジ４及び容器から着脱可能にされてもよい。
【００１５】
図８の具体例は、板状体３１及び３２の内容物取出口２側の端部の構造の点を除いて、図１及び図２の容器と同様である。
【００１６】
図８（ａ）の具体例では、板状体３１及び３２の内容物取出口２側の端部から容器底部へ向かう一定の領域は、袋体１と接着せずに、非接着状態で延在する張出部３３とされ、それ以降の容器底部に至る領域は袋体１と接着されている点に特徴を有する。この場合、内容物の取出時に、袋体１内の減圧により、内容物取出口２と板状体３１及び３２との間の領域で袋体１が収縮して板状体３１及び３２に容器内方への引張力が働いたとしても、この力が板状体３１及び３２の端部に集中することが避けられるので、板状体３１及び３２に層間剥離が発生しにくくなり、袋体１が上記領域で容器内方に移動することが防止される。したがって、袋体１が狭窄することが防止され、内容物の取り出しをスムーズに行うことができる。この張出部３３は、板状体３１及び３２の端部で層間剥離が発生せず、かつ袋体１が自由に動かない程度に張り出していればよく、具体的には、板状体３１及び３２の端部から３〜２０ｍｍ程度の長さとされることが好ましい。
【００１７】
図８（ｂ）及び（ｃ）の具体例では、板状体３１及び３２の内容物取出口２側の端部を折り返して形成した折返部３４又は３５を備えて二層構造とされている点に特徴を有する。この場合、内容物の取出時に、袋体１内の減圧により、内容物取出口２と板状体３１及び３２との間の領域で袋体１が収縮して板状体３１及び３２に容器内方への引張力が板状体３１及び３２の端部に集中したとしても、該端部は折返部３４又は３５であり、端部が板状体の切断面ではないため、板状体３１及び３２に層間剥離が発生しにくくなり、袋体１が上記領域で容器内方に移動することが防止される。したがって、袋体１が狭窄することが防止され、内容物の取り出しをスムーズに行うことができる。この折返部は、図８（ｂ）に示されるように外側へ向かう折返部３４であっても、図８（ｃ）に示されるように内側へ向かう折返部３５であってもよい。
【００１８】
図９の具体例は、板状体３１及び３２が内容物取出口２側で該取出口２の台座２２の付近まで延びる張出部３６を備えている以外、図１及び図２に示される容器と同様の構成を有する。かくして、内容物の取出時に、袋体１内の減圧により、内容物取出口２と板状体３１及び３２との間の領域で袋体１が収縮して板状体３１及び３２が取出口２の方向に移動しようとしたとしても、張出部３６の端部がカートリッジ４の内方端壁４２に当接するので、袋体１の内方への移動は狭窄に至らない程度に制限され、内容物の取り出しをスムーズに行うことができる。このとき、図９（ｂ）に示されるように、張出部３６が袋体１に接着されていると、さらに、袋体１の内方への移動を阻止できるので好ましい。また、張出部３６は、図９（ｃ）に示されるように、容器の未充填時には折り曲がるようにしてもよい。なお、その場合、張出部３６の底辺、すなわち板状体３１及び３２との連接部の幅は短い方が内容物充填時の容器の拡張の妨げとなりにくく、好ましい。
【００１９】
【発明の効果】
本発明によれば、内容物取出時に容器内の減圧により、密閉袋体に内方への引張力が働いたとしても、内容物取出口と板状体との間の領域で該袋体が収縮して容器内方へ移動する範囲は一定限度に抑制されるので、該袋体中の流路が狭窄により閉塞を起こすには至らず、内容物の全量をスムーズに取り出すことができる。
【図面の簡単な説明】
【図１】（ａ）は密封袋体の対向する各側面に板状体が添着されてなる膨縮自在な可撓容器を内容物充填前の状態で示す斜視図、（ｂ）は（ａ）の正面図である。
【図２】図１の容器を内容物充填時の状態で示す図１と同様の図である。
【図３】図２の容器をカートリッジに収容した状態で示す側面図である。
【図４】図２の容器を示す側断面図である。
【図５】本発明の可撓容器の具体例を示す図４と同様の図である。
【図６】本発明の可撓容器の他の具体例を示す図５と同様の図である。
【図７】（ａ）及び（ｂ）は、図２の可撓容器をカートリッジに収容した状態で示す側面図である。
【図８】（ａ）、（ｂ）及び（ｃ）は、夫々、本発明の可撓容器の他の具体例を示す図５と同様の図である。
【図９】（ａ）は、本発明の可撓容器の他の具体例をカートリッジに収容した状態で示す側面図であり、（ｂ）は（ａ）の正面図、（ｃ）は図１の（ｂ）と同様の図である。
【符号の説明】
１密封袋体
２内容物取出口
２１首部
２２台座
２３突起
３１、３２板状体
３３張出部
３４、３５折返部
３６張出部
３９層間剥離
４カートリッジ
４１突起
４２内方端壁
４３スペーサー[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a flexible container suitable for containing a liquid, particularly a high-viscosity liquid such as a stencil printing ink, and more specifically, it is flat when the contents are not filled, and is formed into a tubular shape according to the filling of the contents. The present invention relates to an inflatable container that can be swelled and formed into a flat shape after most of its contents are taken out.
[0002]
[Prior art]
A so-called bag-in-box in which a flexible inner bag such as a resin film is accommodated in an outer box such as a cardboard or a paperboard, and a container for liquid called a bag-in-carton are well known, and contain a high-viscosity liquid or the like. It is used for In such containers, the inner bag shrinks and the outer dimensions decrease with the discharge of the high-viscosity liquid as the contents, but the shape of the outer box does not change. To reduce the space, it is necessary to crush the outer box.
[0003]
[Problems to be solved by the invention]
Therefore, as shown in FIG. 1, a sealed bag 1 which is made of a flexible resin film and can be deformed from a flat shape to a cylindrical expanded shape, and a contents collecting unit provided at the upper end of the bag 1 It is conceivable to prepare a flexible container comprising the outlet 2 and the flexible plate-like bodies 31 and 32 attached to both opposing sides in the flat shape of the bag body 1 before filling the contents. As shown in FIG. 2, when the contents are filled, the flexible containers 31 and 32 are curved in accordance with the expansion of the bag 1, and have a cylindrical shape as a whole. Then, when a pump or the like is connected to the outlet 2 to suck up and take out the contents, particularly when the contents are a high-viscosity liquid, the bottom of the sealed bag 1 moves toward the outlet 2 as the contents are taken out. As it moves, the lower half of the sealed bag 1 is displaced while being inverted so as to be turned over inside the bag 1, thereby reducing the volume and returning to the flat shape. Therefore, this container is flat and small in volume before filling with the contents, does not take up space for storage and transportation, etc., and has a size corresponding to the filling amount when filling the contents, and has a small volume after the contents are used up. It is convenient in returning to.
[0004]
In use, the container shown in FIG. 1 and FIG. 2 is loaded into a cartridge 4 that accommodates the content taking-out port 2 by exposing it outwardly, as shown in FIG. At this time, since the edge of the hole formed in the end wall of the cartridge 4 fits into the neck 21 of the outlet 2, the outlet 2 is fixed to the cartridge 4. However, when the contents are taken out, a pulling force acts on the inside of the bag 1 due to the reduced pressure. As a result, as shown in FIG. 3, the bag 1 is moved in the direction of the arrow in FIG. 3 in a region between the contents outlet 2 and the plates 31 and 32 which is not covered by the plate 31. The inventor has found that it has a tendency to shrink. When the bag body 1 contracts in this way, the plate-like bodies 31 and 32 tend to move in the direction of the outlet 2 as shown by arrows in FIG. Further, when the plate-like bodies 31 and 32 are made of paperboard or corrugated cardboard, as shown in FIG. 4, the ends of the plate-like bodies 31 and 32 on the outlet side are cut surfaces of the plate-like bodies. Delamination 39 may occur. When the movement of the plate-like members 31 and 32 and the delamination 39 as described above expand, the bag 1 contracts between the plate-like members 31 and 32 and the outlet 2 to close the ink flow path, It hinders the removal of items and makes it difficult to remove the entire contents. This problem is remarkable especially when the content has a high viscosity.
[0005]
Therefore, an object of the present invention is to prevent the flexible container as described above from blocking the flow path in the bag at the time of taking out the contents, thereby smoothly discharging the entire contents. .
[0006]
[Means for Solving the Problems]
According to the present invention, there is provided a sealed bag body formed of a flexible resin film and capable of being deformed from a flat shape to a cylindrical expanded shape, and a content collecting unit provided at an end of the bag body. A flexible container comprising an outlet and a plate-like body attached to both side surfaces of the bag body in a flat shape and deformable in accordance with expansion of the bag body, wherein the container takes out the contents. This is achieved by a flexible container characterized in that it comprises specific means for limiting the shrinkage of the bag at times in the region between the outlet and the plate.
[0007]
According to the present invention, even if a tensile force acts inward on the sealed bag due to the reduced pressure in the container when the contents are taken out, the bag shrinks in the region between the contents outlet and the plate-like body. Even if it moves into the container, the movement is suppressed to a certain range, so that the flow path in the bag does not become blocked due to stenosis, and the entire amount of the contents can be taken out smoothly. it can.
[0008]
In the present invention, the plate-shaped body may be made of any material such as a metal plate, a plastic plate, a paperboard, and a cardboard as long as it has flexibility and can be easily bent by a hand or the like. In terms of waste treatment, it is preferable to use paperboard or cardboard. The plate-like body may be a pair of sheets attached to each side in the flat shape of the closed bag, or a single sheet folded back and attached so as to sandwich both sides. Is also good. In addition, after the contents are taken out, the lower half of the sealed bag is rolled up into the upper half thereof, so that the plate-shaped body does not necessarily need to cover the lower half of the sealed bag, and the sealed bag is not necessarily covered. Any size that covers the upper half of is sufficient.
[0009]
In the present invention, the resin film constituting the sealed bag, in consideration of the type of contents, cellophane, polyethylene film, polypropylene film, polyester film, nylon film, polystyrene film, polyvinyl chloride film, polyvinylidene chloride film, Polyvinyl alcohol film, polycarbonate film, EVOH film, fluororesin film, polymethyl methacrylate film, polybutene film, aluminum foil, the above film formed with oxide thin film such as Si or Al, the above film coated with PVDC, EVOH, wax, etc. And the like can be used in the form of a single layer or a multilayer.
[0010]
In the present invention, the plate-like body may be attached to the sealed bag to such an extent that it does not easily separate. In particular, after the contents are taken out, the lower half of the sealed bag is peeled off from the plate and rolled up into the upper half, so that the lower half of the sealed bag and the plate are releasably bonded. Or may not be adhered. As such an adhesive, various adhesives such as a urea resin, a melamine resin, a phenol resin, an epoxy resin, a vinyl acetate resin, an acrylic resin, a cyanoacrylate adhesive, a polyurethane adhesive, and EVA are used. The form of the adhesive can be appropriately selected from a dry lamination type, an aqueous dry lamination type, a non-solvent type, an electron beam curing type, an ultraviolet ray curing type, a hot melt type and the like.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, specific examples of the flexible container of the present invention will be described with reference to FIGS. Note that the specific examples shown in the drawings are merely examples, and the present invention is not limited to only the following specific examples.
[0012]
The specific example of FIG. 5 has the same configuration as that of the container of FIGS. 1 and 2 except that a projection 23 extending toward the bottom of the container is formed on the inside of the bag 1 of the pedestal 22 of the content outlet 2. Having. The outlet 2 is integrated with the bag 1 by bonding the entire surface or at least the peripheral surface of the pedestal 22 to the bag 1. In the specific example of FIG. 5, a plurality of protrusions 23 are provided at substantially equal angular intervals along the periphery of the pedestal 22. Thus, even if the bag 1 contracts in the region between the contents outlet 2 and the plate-like bodies 31 and 32 due to the reduced pressure in the bag 1 during the removal of the contents, Is restricted by the projections 23, so that the bag body 1 does not narrow and the contents can be taken out smoothly.
[0013]
The specific example of FIG. 6 has the same configuration as the container of FIGS. 1 and 2 except that the diameter of the pedestal 22 of the content outlet 2 is increased. The outlet 2 is integrated with the bag 1 by bonding the entire surface or at least the peripheral surface of the pedestal 22 to the bag 1. Thus, even when the bag 1 contracts in the region between the contents outlet 2 and the plate-like bodies 31 and 32 due to the reduced pressure in the bag 1 at the time of taking out the contents, the bag 1 in that region is contracted. Since the dimensions are short, the inward movement of the bag 1 is limited to a degree that does not lead to stenosis, and the contents can be taken out smoothly. The shape of the pedestal 22 is not limited to a circle, but may be an ellipse, a polygon, or the like. In this specific example, the maximum diameter or width 1 of the pedestal 22 is equal to the maximum of the transverse cross section (that is, the surface approximately orthogonal to the axis of the cylindrical shape) of the cylindrical expanded shape of the bag 1 when the contents are filled. It is preferable that the dimension be at least half the diameter or the width L.
[0014]
The specific example of FIG. 7 is the same as that of FIGS. 1 and 2 for the flexible container. However, a projection 41 is provided on the inner side wall of the cartridge 4 so as to abut or engage with the end of the plate-like body 31 or 32 on the side of the outlet 2. Thus, at the time of taking out the contents, the bag 1 contracts in the region between the contents taking-out port 2 and the plate-like bodies 31 and 32 due to the reduced pressure in the bag 1, and the plate-like bodies 31 and 32 are taken out. Even if it is attempted to move in the direction 2, this movement is prevented by the ends of the plate-like bodies 31 and 32 abutting on the projections 41, so that the bag body 1 does not narrow and the contents 1 Extraction can be performed smoothly. The projection 41 may be provided in a continuous annular shape on the inner side wall of the cartridge in parallel with the end of the plate-like bodies 31 and 32 on the outlet 2 side, or may be an intermittent one. It may be. Such a movement preventing means may be constituted by reducing the inner diameter of the cartridge 4 on the side of the outlet 2 to form a step (not shown) which comes into contact with the ends of the plate-like bodies 31 and 32. A concave portion or a convex portion (not shown) is provided on the outer surface of the plate-like bodies 31 and 32, and the plate-like bodies 31 and 32 are prevented from moving in the direction of the outlet 2 by engaging with the concave portions or the convex portions. It may be configured by forming a protrusion or a recess on the inner side wall of the cartridge 4. As shown in FIG. 7B, a spacer 43 having a projection 41 is formed by forming an inner end wall 42 on the outlet 2 side of the cartridge 4 and an end on the outlet 2 side of the plate-like bodies 31 and 32. A similar movement preventing means can also be formed by disposing between them. The spacer 43 may be made detachable from the cartridge 4 and the container.
[0015]
The concrete example of FIG. 8 is the same as the container of FIG. 1 and FIG. 2 except for the structure of the end of the plate-like bodies 31 and 32 on the side of the content outlet 2.
[0016]
In the specific example of FIG. 8A, a certain area from the end of the plate-like bodies 31 and 32 on the side of the contents outlet 2 toward the container bottom does not adhere to the bag 1 but extends in a non-adhesive state. The overhanging portion 33 is present, and the region extending to the bottom of the container thereafter is characterized by being adhered to the bag 1. In this case, when taking out the contents, the bag 1 contracts in the region between the contents take-out port 2 and the plates 31 and 32 due to the reduced pressure in the bag 1, and the containers 31 Even if a tensile force acts inward, this force is prevented from concentrating on the ends of the plate-like bodies 31 and 32, so that delamination hardly occurs in the plate-like bodies 31 and 32, and the bag body 1 is prevented from moving inward of the container in the region. Therefore, stenosis of the bag 1 is prevented, and the contents can be taken out smoothly. The overhanging portion 33 only needs to overhang to such an extent that delamination does not occur at the ends of the plate-like bodies 31 and 32 and the bag 1 does not move freely. , And 32 from the end of about 3 to 20 mm.
[0017]
In the specific examples of FIGS. 8B and 8C, the plate-like bodies 31 and 32 are provided with a folded portion 34 or 35 formed by folding an end on the side of the content outlet 2, and have a two-layer structure. It is characterized by points. In this case, when taking out the contents, the bag 1 contracts in the region between the contents take-out port 2 and the plates 31 and 32 due to the reduced pressure in the bag 1, and the containers 31 Even if the inward tensile force concentrates on the ends of the plate-like members 31 and 32, the ends are the folded portions 34 or 35, and the ends are not cut surfaces of the plate-like members. Delamination hardly occurs in 31 and 32, and the bag 1 is prevented from moving inward in the container in the above-mentioned region. Therefore, stenosis of the bag 1 is prevented, and the contents can be taken out smoothly. This folded portion may be a folded portion 34 facing outward as shown in FIG. 8B, or a folded portion 35 facing inward as shown in FIG. 8C.
[0018]
The specific example of FIG. 9 is shown in FIGS. 1 and 2, except that the plate-like bodies 31 and 32 are provided with an overhang 36 extending to the vicinity of the pedestal 22 of the content outlet 2 on the side of the content outlet 2. It has the same configuration as the container. Thus, at the time of taking out the contents, the bag 1 contracts in the region between the contents taking-out port 2 and the plate-like bodies 31 and 32 due to the reduced pressure in the bag 1, and the plate-like bodies 31 and 32 are taken out. Even if it is attempted to move in the direction of 2, the inward movement of the bag body 1 is limited to a degree that does not lead to stenosis because the end of the overhang 36 abuts on the inner end wall 42 of the cartridge 4. The contents can be smoothly taken out. At this time, as shown in FIG. 9B, it is preferable that the overhang portion 36 is adhered to the bag body 1 because the inward movement of the bag body 1 can be further prevented. Further, as shown in FIG. 9C, the overhang portion 36 may be bent when the container is not filled. In this case, it is preferable that the width of the bottom of the overhanging portion 36, that is, the width of the connecting portion with the plate-like bodies 31 and 32 is short, because it is less likely to hinder the expansion of the container when filling the contents.
[0019]
【The invention's effect】
According to the present invention, even when a pressure is applied to the inside of the closed bag due to the reduced pressure in the container when the contents are taken out, the bag is formed in the region between the contents take-out port and the plate-like body. Since the range of contraction and movement into the container is suppressed to a certain limit, the flow path in the bag does not become blocked due to stenosis, and the entire amount of the contents can be smoothly taken out.
[Brief description of the drawings]
FIG. 1A is a perspective view showing an expandable and contractible flexible container in which a plate is attached to each of opposing side surfaces of a sealed bag before filling contents, and FIG. FIG.
FIG. 2 is a view similar to FIG. 1, showing the container of FIG. 1 in a state of filling contents.
FIG. 3 is a side view showing a state where the container of FIG. 2 is housed in a cartridge.
FIG. 4 is a side sectional view showing the container of FIG. 2;
FIG. 5 is a view similar to FIG. 4, showing a specific example of the flexible container of the present invention.
FIG. 6 is a view similar to FIG. 5, showing another specific example of the flexible container of the present invention.
FIGS. 7A and 7B are side views showing a state where the flexible container of FIG. 2 is housed in a cartridge.
FIGS. 8 (a), (b) and (c) are each a view similar to FIG. 5, showing another specific example of the flexible container of the present invention.
9A is a side view showing another specific example of the flexible container of the present invention in a state accommodated in a cartridge, FIG. 9B is a front view of FIG. 9A, and FIG. It is a figure similar to (b) of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sealing bag 2 Contents take-out 21 Neck 22 Pedestal 23 Protrusion 31, 32 Plate-like body 33 Overhanging part 34, 35 Folding part 36 Overhanging part 39 Delamination 4 Cartridge 41 Projection 42 Inner end wall 43 Spacer

Claims

A sealed bag body that is made of a flexible resin film and can be deformed from a flat shape to a cylindrical expanded shape, a content outlet provided at an end of the bag body, and a flat shape of the bag body. A flexible container comprising a plate attached to both sides thereof and deformable in accordance with the expansion of the bag, wherein the container is connected to the outlet and the plate by removing the contents. Means for restricting shrinkage of the bag in the region between , wherein the shrinkage limiting means comprises a projection extending into the interior of the bag from the opposite side of the outlet, wherein the outlet comprises the bag A flexible container characterized by comprising a pedestal bonded to the pedestal, wherein a plurality of the protrusions are annularly arranged on the periphery of the pedestal .

A sealed bag body that is made of a flexible resin film and can be deformed from a flat shape to a cylindrical expanded shape, a content outlet provided at an end of the bag body, and a flat shape of the bag body. A flexible container comprising a plate attached to both sides thereof and deformable in accordance with the expansion of the bag, wherein the container is connected to the outlet and the plate by removing the contents. Means for restricting shrinkage of the bag body in the region between, the shrinkage restricting means is provided on an inner side wall of a cartridge accommodating the container by exposing the outlet to the outside, and A flexible container comprising means for abutting or engaging with the body to prevent the plate from moving toward the outlet.

3. The flexible container according to claim 2 , wherein the shrinkage restricting means comprises an abutting or engaging means provided on a spacer removably arranged in the cartridge.

A sealed bag body that is made of a flexible resin film and can be deformed from a flat shape to a cylindrical expanded shape, a content outlet provided at an end of the bag body, and a flat shape of the bag body. A flexible container comprising a plate attached to both sides thereof and deformable in accordance with the expansion of the bag, wherein the container is connected to the outlet and the plate by removing the contents. Means for restricting shrinkage of the bag body in a region between them, wherein the shrinkage limiting means further extends in a non-adhered state from the adhesion area between the bag body and the plate-like body to the outlet side. A flexible container comprising a projecting portion of the plate-like body.

The shrinkage restricting means is a projecting portion of the plate-like body that extends until the outlet is exposed to the outside and comes into contact with an inner end wall on the outlet side of the cartridge that houses the container. Item 5. The flexible container according to Item 4 .

A sealed bag body that is made of a flexible resin film and can be deformed from a flat shape to a cylindrical expanded shape, a content outlet provided at an end of the bag body, and a flat shape of the bag body. A flexible container comprising a plate attached to both sides thereof and deformable in accordance with the expansion of the bag, wherein the container is connected to the outlet and the plate by removing the contents. Means for restricting shrinkage of the bag body in a region between, the shrinkage restricting means is provided on the plate-like body at an end on the outlet side of an adhesion area between the bag body and the plate-like body. A flexible container comprising a folded portion formed.