JP2018154390A - Double aerosol container - Google Patents

Double aerosol container Download PDF

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JP2018154390A
JP2018154390A JP2017053966A JP2017053966A JP2018154390A JP 2018154390 A JP2018154390 A JP 2018154390A JP 2017053966 A JP2017053966 A JP 2017053966A JP 2017053966 A JP2017053966 A JP 2017053966A JP 2018154390 A JP2018154390 A JP 2018154390A
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inner bag
outer container
valve assembly
housing
container
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JP7021858B2 (en
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亮一 大和田
Ryoichi Owada
亮一 大和田
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Daizo Corp
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Daizo Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a double aerosol container in which the residual of an undiluted solution can be suppressed as far as possible.SOLUTION: Provided is a double aerosol container which comprises an outer container 10, an inner bag 20 which is housed in the outer container 10 and is for filling the inside with an undiluted solution C, and a valve assembly 30 which closes opening parts 10a, 20a of the outer container 10 and the inner bag 20, in which the inner bag 20 is compresses by a pressurizing agent P fed into the space between the outer container 10 and the inner bag 20, to discharge the undiluted solution C. The inner bag 20 is made of synthetic resin and comprises a bottom part 20b, a cylindrical trunk part 20c, a neck part 20d to which the valve assembly 30 is fitted, and a bellows part 20e which is provided between the trunk part 20c and the neck part 20d. The neck part 20d protrudes from the opening part 10a of the outer container 10 under a condition that the bottom part 20b is loaded on the inner bottom surface of the outer container 10, and the thickness of the neck part 20d is 0.3 to 0.5 mm.SELECTED DRAWING: Figure 1

Description

この発明は、外容器と内袋とバルブアッセンブリとを備えた二重エアゾール容器に関し、特に外容器と内袋の間の空間に充填した加圧剤によって内袋を圧縮し、内袋内の原液を吐出するための二重エアゾール容器に関する。   The present invention relates to a double aerosol container having an outer container, an inner bag, and a valve assembly, and in particular, compresses the inner bag with a pressurizing agent filled in a space between the outer container and the inner bag, and a stock solution in the inner bag. The present invention relates to a double aerosol container for discharging water.

特許文献1には、二重エアゾール製品に用いる原液充填用の内袋が開示されている。この内袋は、外容器と内袋の間の空間に加圧剤を充填するにあたってバルブアッセンブリを外容器から浮かせた状態で支え、外容器とバルブアッセンブリとの間に加圧剤充填用の隙間を形成しつつ、加圧剤充填後は、バルブアッセンブリの押し込みを許容する、すなわち、上下方向の高さを調節するための蛇腹部を備えている。   Patent Document 1 discloses an inner bag for filling a stock solution used for a double aerosol product. The inner bag supports the valve assembly in a state where it is floated from the outer container when filling the space between the outer container and the inner bag with the pressure agent, and the pressure agent filling gap is provided between the outer container and the valve assembly. After the pressurizing agent is filled, the bellows part is provided to allow the valve assembly to be pushed, that is, to adjust the height in the vertical direction.

特開2011−136747号公報JP 2011-136747 A

ところで、蛇腹部は横方向に対するリブとして作用するため、他の部分に比べて変形し難い。また、内袋の上端近傍もバルブアッセンブリが内挿されるため変形し難い。そのため、内袋の上端近傍から蛇腹部にかけて思うように収縮せず、この部分に多くの原液が残留することになっていた。   By the way, since the bellows part acts as a rib with respect to the lateral direction, the bellows part is less likely to be deformed than other parts. Further, the valve assembly is also inserted in the vicinity of the upper end of the inner bag, so that it is difficult to deform. Therefore, it does not shrink as expected from the vicinity of the upper end of the inner bag to the bellows part, and a large amount of stock solution remains in this part.

そこで本発明は、原液の残留をなるべく抑えることができる二重エアゾール容器の提供を目的とする。   Then, this invention aims at provision of the double aerosol container which can suppress the residue of stock solution as much as possible.

本発明の二重エアゾール容器は、外容器10と、外容器10に収容され、内部に原液Cを充填するための内袋20と、外容器10および内袋20の開口部10a、20aを閉じるバルブアッセンブリ30とを備え、外容器10と内袋20の間の空間に充填した加圧剤Pによって内袋20を圧縮し、原液Cを吐出する二重エアゾール容器であって、内袋20が合成樹脂製であり、底部20bと、筒状の胴部20cと、バルブアッセンブリ30を装着する首部20dと、胴部20cと首部20dの間に設けられた蛇腹部20eとを備え、外容器10の内底面に底部20bを載置させた状態で首部20dが外容器10の開口部10aよりも突出するものであり、首部20dの肉厚が0.3〜0.5mmであることを特徴としている。   The double aerosol container of the present invention closes the outer container 10, the inner bag 20 that is accommodated in the outer container 10 and is filled with the stock solution C, and the openings 10 a and 20 a of the outer container 10 and the inner bag 20. A double aerosol container comprising a valve assembly 30 and compressing the inner bag 20 with a pressurizing agent P filled in a space between the outer container 10 and the inner bag 20 and discharging the stock solution C. The outer container 10 is made of a synthetic resin and includes a bottom portion 20b, a cylindrical barrel portion 20c, a neck portion 20d to which the valve assembly 30 is attached, and a bellows portion 20e provided between the trunk portion 20c and the neck portion 20d. The neck 20d protrudes from the opening 10a of the outer container 10 in a state where the bottom 20b is placed on the inner bottom surface, and the thickness of the neck 20d is 0.3 to 0.5 mm. Yes.

バルブアッセンブリ30を外容器10に装着することで、内袋20の蛇腹部20eが軸方向に圧縮されて一部が折り畳まれることが好ましい。   By attaching the valve assembly 30 to the outer container 10, it is preferable that the bellows portion 20e of the inner bag 20 is compressed in the axial direction and partly folded.

バルブアッセンブリ30が、内袋20の開口部20aに内挿される環状の外周壁41bと、バルブ機構42を収容するハウジング41と、外周壁41b内でハウジング41に装着されるハウジングカバー47とを備えており、ハウジングカバー47の上端が外周壁41b内で開口していることが好ましい。   The valve assembly 30 includes an annular outer peripheral wall 41b inserted into the opening 20a of the inner bag 20, a housing 41 that houses the valve mechanism 42, and a housing cover 47 that is mounted on the housing 41 within the outer peripheral wall 41b. The upper end of the housing cover 47 is preferably open in the outer peripheral wall 41b.

この発明の二重エアゾール容器は、内袋の首部の肉厚が0.3〜0.5mmとされていることにより、首部が変形し易くなり、首部の下部に連続する蛇腹部も変形し易くなって、首部と蛇腹部との間、蛇腹部内での原液の残留量を少なくすることができる。また、蛇腹部の一部が折り畳まれていれば、蛇腹部の半径方向の剛性がその分小さくなり、蛇腹部がさらに変形し易くなる。ハウジングカバーの上端が外周壁内で開口していれば、首部や蛇腹部が半径方向に圧縮されて不規則に変形しても、ハウジング内へ向かう原液通路を確保することができる。   In the double aerosol container of the present invention, the neck portion of the inner bag has a thickness of 0.3 to 0.5 mm, so that the neck portion is easily deformed, and the bellows portion continuous to the lower portion of the neck portion is also easily deformed. Thus, the remaining amount of the stock solution in the bellows portion between the neck portion and the bellows portion can be reduced. Further, if a part of the bellows part is folded, the rigidity of the bellows part in the radial direction is reduced correspondingly, and the bellows part is further easily deformed. If the upper end of the housing cover is open in the outer peripheral wall, the stock solution passage toward the housing can be secured even if the neck portion and the bellows portion are radially compressed and deformed irregularly.

本発明の二重エアゾール容器の一実施形態を示す断面図である。It is sectional drawing which shows one Embodiment of the double aerosol container of this invention. 原液を吐出した後の二重エアゾール容器を示す断面図である。It is sectional drawing which shows the double aerosol container after discharging stock solution. バルブアッセンブリを内袋に装着した状態を示す断面図である。It is sectional drawing which shows the state which mounted | wore the inner bag with the valve assembly. 二重エアゾール容器の他の実施形態を示す断面図である。It is sectional drawing which shows other embodiment of a double aerosol container. 二重エアゾール容器のさらに他の実施形態を示す断面図である。It is sectional drawing which shows other embodiment of a double aerosol container.

次に、この発明の二重エアゾール容器について図面に基づいて説明していく。本発明の二重エアゾール容器は図1〜図3に示すように、上端に開口部10aを有する外容器10と、同じく上端に開口部20aを有し、外容器10内に収容される内袋20と、外容器10の開口部10aと内袋20の開口部20aの双方に取り付けられ、内袋20内と外部とを連通/遮断するバルブアッセンブリ30とを備えている。   Next, the double aerosol container of this invention is demonstrated based on drawing. As shown in FIGS. 1 to 3, the double aerosol container of the present invention has an outer container 10 having an opening 10 a at the upper end and an inner bag that has an opening 20 a at the upper end and is accommodated in the outer container 10. 20 and a valve assembly 30 that is attached to both the opening 10a of the outer container 10 and the opening 20a of the inner bag 20 and communicates / blocks the inside and the outside of the inner bag 20 with each other.

外容器10は、底部10bと、円筒状の胴部10cと、胴部10cの上方で縮径する括れ部10dと、括れ部10dの上端から立ち上がる円筒状の立ち上がり部10eとを備えている。開口部10aは、立ち上がり部10eの上端に設けられている。   The outer container 10 includes a bottom part 10b, a cylindrical body part 10c, a constricted part 10d whose diameter is reduced above the body part 10c, and a cylindrical rising part 10e that rises from the upper end of the constricted part 10d. The opening 10a is provided at the upper end of the rising portion 10e.

この外容器10は、例えばアルミニウムなどの金属円盤をインパクト加工または絞りしごき加工により有底筒状に成形し、または金属板を絞りしごき加工により有底筒状に形成し、内面に合成樹脂コートを施し、ついで、その胴部10c上端にネッキング加工を施して括れ部10d及び立ち上がり部10eを形成することで構成されており、少なくとも加圧剤Pを充填しても、さらには加圧剤充填直後にバルブアセンブリ30を取り付ける際に、バルブアッセンブリ30を降下させて軸方向に荷重を加えても、破裂や形状が変化しない程度の耐圧性を有している。   The outer container 10 is formed, for example, by forming a metal disk such as aluminum into a bottomed cylindrical shape by impact processing or squeezing and ironing, or forming a metal plate into a bottomed cylindrical shape by squeezing and ironing, and a synthetic resin coat is formed on the inner surface. Then, the upper end of the body portion 10c is necked to form the constricted portion 10d and the rising portion 10e. Even if at least the pressurizing agent P is filled, it is further immediately after the pressurizing agent is filled. When the valve assembly 30 is attached to the valve assembly 30, the valve assembly 30 has a pressure resistance enough to prevent the burst or shape from changing even if the valve assembly 30 is lowered and a load is applied in the axial direction.

内袋20は、底部20bと、円筒状の胴部20cと、バルブアッセンブリ30を装着する首部20dと、胴部20cと首部20dの間に設けられた蛇腹部20eとを備えている。開口部20aは、首部20dの上端に設けられている。首部20dは、蛇腹部20eの上端に位置する円筒状の基部20fと、基部20fの上端から外側に広がる拡径部20gと、拡径部20gの上端から上方に延びる円筒状のバルブ嵌合部20hとを備えている。   The inner bag 20 includes a bottom portion 20b, a cylindrical trunk portion 20c, a neck portion 20d to which the valve assembly 30 is attached, and a bellows portion 20e provided between the trunk portion 20c and the neck portion 20d. The opening 20a is provided at the upper end of the neck 20d. The neck portion 20d includes a cylindrical base portion 20f positioned at the upper end of the bellows portion 20e, a diameter-enlarged portion 20g extending outward from the upper end of the base portion 20f, and a cylindrical valve fitting portion extending upward from the upper end of the enlarged-diameter portion 20g. 20h.

蛇腹部20eは、図3に示すように、内側に傾斜して伸びる内側傾斜部20e1と、その上端から外側に傾斜して延びる外側傾斜部20e2とを交互に繰り返すことによって構成されている。本実施形態の蛇腹部20eでは、内側傾斜部20e1と外側傾斜部20e2をそれぞれ2つずつ有しており、内袋20を外側から見ると、谷折り部Vが2つと、これら谷折り部V、Vの間に山折り部Mが1つ形成されている。蛇腹部20eの最外径(山折り部Mの頂点での外径)は、胴部20cや首部20dの基部20fの外径と略同一である。傾斜部20e1、20e2の角度(水平面に対する角度)αは、バルブアッセンブリ30を外容器10に装着する前で約45度である。ただし、30〜60度程度とすることができる。   As shown in FIG. 3, the bellows portion 20 e is configured by alternately repeating an inner inclined portion 20 e 1 that is inclined and extends inward and an outer inclined portion 20 e 2 that is inclined outward from the upper end thereof. The bellows portion 20e of the present embodiment has two inner inclined portions 20e1 and two outer inclined portions 20e2, and when the inner bag 20 is viewed from the outside, there are two valley fold portions V. These valley fold portions V , One mountain fold M is formed between V and V. The outermost diameter of the bellows portion 20e (the outer diameter at the apex of the mountain fold portion M) is substantially the same as the outer diameter of the base portion 20f of the trunk portion 20c and the neck portion 20d. The angle (angle with respect to the horizontal plane) α of the inclined portions 20 e 1 and 20 e 2 is about 45 degrees before the valve assembly 30 is mounted on the outer container 10. However, it can be about 30 to 60 degrees.

この内袋20は、合成樹脂をブロー成形することにより製造され、外容器10と内袋20との間に充填される加圧剤Pの圧力によって押し潰される程度の可撓性を有している。合成樹脂としては、ポリエチレン、ポリプロピレン、ポリエチレンテレフタレート、ナイロン、エバールなどである。これらは単層あるいは2種以上の積層体として使用される。   The inner bag 20 is manufactured by blow molding a synthetic resin, and has such flexibility that it can be crushed by the pressure of the pressurizing agent P filled between the outer container 10 and the inner bag 20. Yes. Examples of the synthetic resin include polyethylene, polypropylene, polyethylene terephthalate, nylon, and eval. These are used as a single layer or a laminate of two or more.

内袋20の肉厚としては0.2〜0.8mm、好ましくは0.25〜0.7mm程度であるが、特に首部20dは0.3〜0.5mmとする。首部20dの肉厚が0.3mm未満であると精度良い成型が困難となり、0.5mmを超えると首部の基部20fや蛇腹部20eが変形し難くなるためである。   The wall thickness of the inner bag 20 is 0.2 to 0.8 mm, preferably about 0.25 to 0.7 mm, but the neck portion 20 d is particularly 0.3 to 0.5 mm. This is because if the thickness of the neck portion 20d is less than 0.3 mm, accurate molding becomes difficult, and if it exceeds 0.5 mm, the base portion 20f and the bellows portion 20e of the neck portion are difficult to deform.

全長(上下方向の高さ)は、内袋20を外容器10に挿入し、内袋20の底部20bを外容器10の内底面に載置させた状態で、図3に示すように、内袋20の首部20d(特にバルブ嵌合部20h)が外容器10の開口部10aから上方に突出する長さに設定されている。なお、これは、加圧剤Pを充填する際、内袋20にバルブアッセンブリ30を支持させ、バルブアッセンブリ30と外容器10との間に加圧剤充填用の隙間を形成するためである。突出分は、主に蛇腹部20eが折り畳まれることによって吸収される(図1参照)。   The total length (height in the vertical direction) is determined by inserting the inner bag 20 into the outer container 10 and placing the bottom 20b of the inner bag 20 on the inner bottom surface of the outer container 10, as shown in FIG. The neck 20d of the bag 20 (particularly the valve fitting portion 20h) is set to a length that protrudes upward from the opening 10a of the outer container 10. This is because when the pressurizing agent P is filled, the valve assembly 30 is supported by the inner bag 20, and a gap for filling the pressurizing agent is formed between the valve assembly 30 and the outer container 10. The protrusion is absorbed mainly by folding the bellows portion 20e (see FIG. 1).

バルブアッセンブリ30は、内袋20内に充填された原液Cの外部への吐出/遮断を選択的に行うバルブ40と、外容器10の開口部10aと内袋20の開口部20aをそれぞれシールするガスケット50と、バルブ40を外容器10及び内袋20に固定するカバーキャップ60とから構成されている。   The valve assembly 30 seals the valve 40 that selectively discharges / blocks the stock solution C filled in the inner bag 20 to the outside, the opening 10a of the outer container 10, and the opening 20a of the inner bag 20, respectively. The gasket 50 and the cover cap 60 that fixes the valve 40 to the outer container 10 and the inner bag 20 are configured.

バルブ40は、ハウジング41と、バルブ機構42と、ハウジング41を下側から囲むハウジングカバー47とから構成されている。   The valve 40 includes a housing 41, a valve mechanism 42, and a housing cover 47 that surrounds the housing 41 from below.

ハウジング41は、ステム43を支持する内筒41aと、内袋20のバルブ嵌合部20hの内径よりもわずかに大きく、バルブ嵌合部20hと嵌合してシールする外周壁41bとを備えている。これら内筒41aと外周壁41bとは、内筒41aと外周壁41bの上端同士に跨る天板41cと、内筒41aを中心として放射状に設けられた複数の垂直リブ41dとによって連結されている。   The housing 41 includes an inner cylinder 41a that supports the stem 43, and an outer peripheral wall 41b that is slightly larger than the inner diameter of the valve fitting portion 20h of the inner bag 20 and that fits and seals with the valve fitting portion 20h. Yes. The inner cylinder 41a and the outer peripheral wall 41b are connected by a top plate 41c straddling the upper ends of the inner cylinder 41a and the outer peripheral wall 41b, and a plurality of vertical ribs 41d provided radially around the inner cylinder 41a. .

内筒41aは略円筒状であって、上端側の全面が開口している。内筒41aの内周面には、上下方向に向かって複数の溝41eが等間隔に形成されており、内筒41a内に挿入されたステム43の外周面との間で通路を形成している。また、内筒41aの外周面にも上下方向に向かって複数の溝41fが等間隔に形成されており、ハウジングカバー47の内周面との間で通路を形成している。また、内筒41aの底部41gからは、内筒41aよりも小径とされた円筒状の下筒41hが延設されている。下筒41hと内筒41aとは、内筒41aの底部41gの中心に設けられた小孔41iによって連通している。   The inner cylinder 41a is substantially cylindrical, and the entire upper surface is open. On the inner peripheral surface of the inner cylinder 41a, a plurality of grooves 41e are formed at equal intervals in the vertical direction, and a passage is formed between the outer periphery of the stem 43 inserted into the inner cylinder 41a. Yes. Further, a plurality of grooves 41 f are formed at equal intervals in the vertical direction on the outer peripheral surface of the inner cylinder 41 a, and a passage is formed with the inner peripheral surface of the housing cover 47. A cylindrical lower cylinder 41h having a smaller diameter than the inner cylinder 41a extends from the bottom 41g of the inner cylinder 41a. The lower cylinder 41h and the inner cylinder 41a communicate with each other through a small hole 41i provided at the center of the bottom 41g of the inner cylinder 41a.

外周壁41bは略円筒状であって下端側が開口している。外周壁41bの外周面には環状に凸部41jが設けられており、内袋20のバルブ嵌合部20h及び拡径部20gを径外方向に押しやり、加圧剤Pをアンダーカップ充填する際に内袋20内に加圧剤Pが入り込まないようにシールする。また、バルブアッセンブリ30を外容器10に装着した際に内袋20の外面を外容器10の内面に当接させる。   The outer peripheral wall 41b is substantially cylindrical and has a lower end opened. The outer peripheral surface of the outer peripheral wall 41b is provided with an annular convex portion 41j. The valve fitting portion 20h and the enlarged diameter portion 20g of the inner bag 20 are pushed outward in the radial direction, and the pressurizing agent P is filled with the undercup. At this time, sealing is performed so that the pressurizing agent P does not enter the inner bag 20. Further, when the valve assembly 30 is mounted on the outer container 10, the outer surface of the inner bag 20 is brought into contact with the inner surface of the outer container 10.

天板41cは、内筒41aの上端近傍において、内筒41a側に下る階段状に形成されている。段数は2段であり、下段41k側がステムラバー44を載置するための部位、上段41m側がカバー体45を取り付けるための部位となっている。また、天板41cは、外周壁41bの上端を越えて径外方向に延出されてフランジ部41nを形成している。このフランジ部41nの下面と外周壁41bの外周面とで構成される入隅部には円環状のガスケット50が配置されており、外容器10と内袋20の上端に当接し、シールを構成している。   The top plate 41c is formed in a staircase shape that descends toward the inner cylinder 41a in the vicinity of the upper end of the inner cylinder 41a. The number of stages is two, the lower stage 41k side is a part for mounting the stem rubber 44, and the upper stage 41m side is a part for attaching the cover body 45. Moreover, the top plate 41c extends radially outward beyond the upper end of the outer peripheral wall 41b to form a flange portion 41n. An annular gasket 50 is arranged at the corner formed by the lower surface of the flange portion 41n and the outer peripheral surface of the outer peripheral wall 41b, and abuts against the upper ends of the outer container 10 and the inner bag 20 to form a seal. doing.

バルブ機構42は、ハウジング41内に上下動自在に挿入された有底筒状のステム43と、ステム43の外周に位置し、ステム43の側面に設けられたステム孔43aを塞ぐステムラバー44と、ステムラバー44の上面を覆う円板状のカバー体45と、ステム43を常時上方に付勢する弾性体46(コイルバネ)とから構成されている。   The valve mechanism 42 includes a bottomed cylindrical stem 43 that is inserted into the housing 41 so as to freely move up and down, and a stem rubber 44 that is positioned on the outer periphery of the stem 43 and closes a stem hole 43 a provided on the side surface of the stem 43. The disc-shaped cover body 45 that covers the upper surface of the stem rubber 44 and the elastic body 46 (coil spring) that constantly biases the stem 43 upward.

ハウジングカバー47は、上端に開口部47aを有し、下端に底部47bを有する略円筒状である。このハウジングカバー47は、ハウジング41の内筒41aや下筒41hに装着されるものであって、その下方側は、内筒41よりも小径とされた下筒41hに合わせて小径とされている。ハウジングカバー47の上部は、上方に向かうにつれて徐々に拡径するテーパ状とされている。この拡径部47cには、ハウジング41の垂直リブ41dに対応してスリット47dが形成されている。スリット47dは垂直リブ41dの上下方向の長さよりも短く形成されており、ハウジング41の内筒41aや下筒41hにハウジングカバー47を外嵌させた状態において、ハウジングカバー47の上端とハウジング41の天板41cの下面との間に開口が形成されるようになっている。なお、この開口が、内袋20内の原液Cをバルブ40内に取り込む取込口となる。   The housing cover 47 has a substantially cylindrical shape having an opening 47a at the upper end and a bottom 47b at the lower end. The housing cover 47 is attached to the inner cylinder 41 a and the lower cylinder 41 h of the housing 41, and the lower side thereof has a small diameter in accordance with the lower cylinder 41 h that has a smaller diameter than the inner cylinder 41. . The upper part of the housing cover 47 has a tapered shape that gradually increases in diameter as it goes upward. A slit 47d is formed in the enlarged diameter portion 47c corresponding to the vertical rib 41d of the housing 41. The slit 47d is formed to be shorter than the vertical length of the vertical rib 41d. When the housing cover 47 is externally fitted to the inner cylinder 41a and the lower cylinder 41h of the housing 41, the upper end of the housing cover 47 and the housing 41 An opening is formed between the lower surface of the top plate 41c. This opening serves as a take-in port for taking the stock solution C in the inner bag 20 into the valve 40.

上記構成の二重エアゾール容器1は、内袋20に原液Cを充填し、内袋の開口部20aにバルブアッセンブリ30を載置し、外容器10と内袋20との間に加圧剤Pを充填するとともに、バルブアッセンブリ30を外容器10にカシメ固定し、さらにステム43に吐出部材(図示しない)を取り付けることで、加圧剤Pの圧力によって内袋20を圧縮し(収縮させ)、原液Cをバルブ40から吐出する二重エアゾール製品となる。   In the double aerosol container 1 having the above configuration, the inner bag 20 is filled with the stock solution C, the valve assembly 30 is placed in the opening 20a of the inner bag, and the pressure agent P is placed between the outer container 10 and the inner bag 20. The inner bag 20 is compressed (contracted) by the pressure of the pressurizing agent P by fixing the valve assembly 30 to the outer container 10 and attaching a discharge member (not shown) to the stem 43. It becomes the double aerosol product which discharges stock solution C from valve 40.

充填される原液Cとしては、クリーム状、ペースト状、ジェル状など、25℃において1000〜100,000MPa・sの粘度を有する原液C(粘性内容物)が充填可能である。用途としては、2液式染毛剤などの頭髪用製品、2液式発熱製剤(クレンジング、シェービング剤)などの皮膚用製品など各種用途のものが想定される。なお、2液式製品として使用する場合は、第1原液を充填した第1エアゾール製品と第2原液を充填した第2エアゾール製品を吐出部材に取り付ける。   As the stock solution C to be filled, a stock solution C (viscous content) having a viscosity of 1000 to 100,000 MPa · s at 25 ° C. such as cream, paste or gel can be filled. Possible uses include various products such as hair products such as two-component hair dyes and skin products such as two-component exothermic preparations (cleansing and shaving agents). When used as a two-component product, the first aerosol product filled with the first stock solution and the second aerosol product filled with the second stock solution are attached to the discharge member.

加圧剤Pとしては、例えば窒素、圧縮空気、炭酸ガス、亜酸化窒素などの圧縮ガスが充填される。充填後の圧力は、例えば25℃において0.4〜1.0MPaである。なお、液化ガスを充填してもよい。   As the pressurizing agent P, for example, a compressed gas such as nitrogen, compressed air, carbon dioxide, nitrous oxide is filled. The pressure after filling is, for example, 0.4 to 1.0 MPa at 25 ° C. Note that liquefied gas may be filled.

ところで加圧剤Pの充填は、図3に示すように、ハウジング41を外容器10の開口部10aから僅かに浮かせた状態で行う(いわゆるアンダーカップ充填)。加圧剤Pの充填後は、ハウジング41を押し下げて外容器10の上端にガスケット50を圧縮させる(図1参照)。この際、内袋20は軸方向(上下方向)に圧縮され、蛇腹部20eが上下方向に収縮する。収縮は、谷折り部Vや山折り部Mがそれぞれ均等に折れ曲がるのではなく、一部(図1においては上側の谷折り部V)が極端に折れ曲がる。そして、互いに隣接する内側傾斜部20e1と外側傾斜部20e2とが重なり合う重畳部21が形成される。なお、重畳部21を確実に形成するため、重畳部21を形成したい部分の肉厚を他の部分よりも薄くしたり、傾斜部の角度αを他の傾斜部よりも浅くしたり、予め癖付けしていたりしても良い。   By the way, as shown in FIG. 3, the pressurizing agent P is filled in a state where the housing 41 is slightly lifted from the opening 10a of the outer container 10 (so-called undercup filling). After filling the pressurizing agent P, the housing 41 is pushed down to compress the gasket 50 to the upper end of the outer container 10 (see FIG. 1). At this time, the inner bag 20 is compressed in the axial direction (vertical direction), and the bellows portion 20e contracts in the vertical direction. In the shrinkage, the valley fold V and the mountain fold M are not evenly bent, but a part (the upper valley fold V in FIG. 1) is extremely bent. And the overlapping part 21 with which the inner side inclination part 20e1 and the outer side inclination part 20e2 which adjoin each other overlap is formed. In order to reliably form the overlapping portion 21, the thickness of the portion where the overlapping portion 21 is to be formed is made thinner than the other portions, the angle α of the inclined portion is made shallower than the other inclined portions, It may be attached.

上記二重エアゾール製品は、ステム43を操作することで、ステムラバー44によって塞がれていたステム孔43aを開放し、原液Cを吐出させることができる。原液Cは、ハウジングカバー47の上端の開口部47aから、ハウジングカバー47とハウジング41の内筒41aの外側の溝41fとで形成された通路、ハウジングカバー47とハウジング41の下筒41hとの間の隙間、ハウジング41の下筒41h内、ハウジング41の底部41gの小孔41i、ハウジング41の内筒41aの内側の溝41eとステム43の外周面との間の通路、ステム孔43a、ステム内通路、吐出部材を経て外部に吐出される(図1の矢印参照)。   By operating the stem 43, the double aerosol product can open the stem hole 43a closed by the stem rubber 44 and discharge the stock solution C. The stock solution C passes from the opening 47a at the upper end of the housing cover 47 to the passage formed by the housing cover 47 and the groove 41f outside the inner cylinder 41a of the housing 41, and between the housing cover 47 and the lower cylinder 41h of the housing 41. , A small hole 41i in the bottom 41g of the housing 41, a passage between the groove 41e inside the inner cylinder 41a of the housing 41 and the outer peripheral surface of the stem 43, the stem hole 43a, and the inside of the stem It is discharged to the outside through the passage and the discharge member (see the arrow in FIG. 1).

原液Cが吐出されていくと、原液Cの減少に伴い内袋20は半径方向に収縮していく。収縮は変形し易い胴部20cから始まり、やがて首部20dや蛇腹部20eに及ぶが、本発明で用いる内袋20は、首部20dの肉厚が0.3〜0.5mmと薄肉とされているため、首部20dが変形し易い。また、蛇腹部20eの一部が折り畳まれ、傾斜部20e1、20e2同士が重なる重畳部21が形成されていることから、見かけ上、蛇腹の数(山折り部M、谷折り部Vの数)が少なくなっており、蛇腹部20eでも変形し易くなっている。具体的には、傾斜部20e1、20e2が重なり合うことで、上下方向の剛性が小さくなり、捩れるようにして変形するようになる(横座屈)。そのため、図2で示すように、例えば首部20dの一部がハウジングカバー47に当接する程度に、首部20dから蛇腹部20eにかけて大きな変形が生じ、原液Cの残留が極力抑えられる。なお、原液Cの取込口(ハウジングカバー47の開口部47a)が、ハウジング41の外周壁41bで囲まれた空間内に位置しているため、内袋20が大きく且つ不規則に変形しても原液Cの取り込みが内袋20によって阻害されることは無く、最後まで原液Cを吐出することができる。   As the stock solution C is discharged, the inner bag 20 shrinks in the radial direction as the stock solution C decreases. The shrinkage starts from the deformable body portion 20c and eventually reaches the neck portion 20d and the bellows portion 20e, but the inner bag 20 used in the present invention has a thin thickness of 0.3 to 0.5 mm at the neck portion 20d. Therefore, the neck portion 20d is easily deformed. In addition, since a part of the bellows portion 20e is folded and the overlapping portion 21 is formed in which the inclined portions 20e1 and 20e2 overlap each other, it is apparent that the number of bellows (the number of mountain fold portions M and valley fold portions V). And the bellows portion 20e is easily deformed. Specifically, since the inclined portions 20e1 and 20e2 overlap each other, the rigidity in the vertical direction becomes small and deforms so as to be twisted (lateral buckling). Therefore, as shown in FIG. 2, for example, a large deformation occurs from the neck portion 20d to the bellows portion 20e so that a part of the neck portion 20d contacts the housing cover 47, and the residual of the stock solution C is suppressed as much as possible. In addition, since the intake port for the stock solution C (the opening 47a of the housing cover 47) is located in the space surrounded by the outer peripheral wall 41b of the housing 41, the inner bag 20 is large and irregularly deformed. However, the uptake of the stock solution C is not hindered by the inner bag 20, and the stock solution C can be discharged to the end.

図4に示す二重エアゾール容器2は、内袋20Aの首部20dに括れ部22が設けられている。具体的には、蛇腹部20eと拡径部20gとの間の基部20fに括れ部22が設けられている。このように括れ部22を設けていれば、首部20dから蛇腹部20eにかけての容量を予め小さくしておくことができ、原液Cの残留を抑えることができる。また、原液Cを吐出する際には上部の開口部47aに向かって導出され、さらに首部20dの肉厚が0.3〜0.5mmと薄肉とされているため、原液Cが少なくなると一点鎖線で示すように、内袋20Aがハウジング41側に向かって持ち上がるように収縮変形し、原液Cの残留量をより低減することができる。なお、他の部分については、図1〜図3に示すエアゾール容器と同様であり、例えば内袋20Aの重畳部21は、バルブアッセンブリ30を押し下げる前は、図3に示す内袋20と同様に形成されておらず、バルブアッセンブリ30を押し下げることで初めて形成される。   The double aerosol container 2 shown in FIG. 4 is provided with a constricted portion 22 at the neck portion 20d of the inner bag 20A. Specifically, the constricted portion 22 is provided at the base portion 20f between the bellows portion 20e and the enlarged diameter portion 20g. If the constricted portion 22 is provided in this manner, the volume from the neck portion 20d to the bellows portion 20e can be reduced in advance, and the remaining stock solution C can be suppressed. Further, when discharging the stock solution C, it is led out toward the upper opening 47a, and the thickness of the neck 20d is as thin as 0.3 to 0.5 mm. As shown, the inner bag 20A is contracted and deformed so as to be lifted toward the housing 41, and the residual amount of the stock solution C can be further reduced. The other portions are the same as the aerosol container shown in FIGS. 1 to 3. For example, the overlapping portion 21 of the inner bag 20 </ b> A is the same as the inner bag 20 shown in FIG. 3 before the valve assembly 30 is pushed down. It is not formed, but is formed for the first time by pushing down the valve assembly 30.

図5に示す二重エアゾール容器3は、バルブアッセンブリ31が上記二重エアゾール容器1、2と異なっている。具体的には、ハウジング41の外周壁41bに相当する部分がハウジング49とは別体となっている。この別体とされた部分(マウンティングカップ48)は、逆カップ状のハウジング保持部48aと、そのハウジング保持部48aとの間に環状の深溝48bを介して設けられる外周部48cと、その外周部48cの上端のフランジ部48dとを備えている。なお、深溝48bはハウジング49を嵌合させるときの弾性を得るために、さらには外周部48cに撓みを持たせバルブ40を取り付けたときにシール性を高くするために設けられている。   The double aerosol container 3 shown in FIG. 5 differs from the double aerosol containers 1 and 2 in the valve assembly 31. Specifically, a portion corresponding to the outer peripheral wall 41 b of the housing 41 is separate from the housing 49. The separated portion (mounting cup 48) includes an inverted cup-shaped housing holding portion 48a, an outer peripheral portion 48c provided between the housing holding portion 48a and an annular deep groove 48b, and an outer peripheral portion thereof. And a flange portion 48d at the upper end of 48c. The deep groove 48b is provided in order to obtain elasticity when the housing 49 is fitted, and further, in order to enhance the sealing performance when the outer peripheral portion 48c is bent and the valve 40 is attached.

上記構成のバルブアッセンブリ31では、外周部48cからハウジング49にかけて原液Cが溜まる空間がほとんど形成されないため、図1〜図4に示す二重エアゾール容器1、2に比べて原液Cの残留を抑制することができる。また、ハウジングカバー47を設ける必要もない。ハウジング49の側面に開口49aを設けることで、内袋20Bがハウジング49に密着するように収縮しても、最後まで原液Cを吐出できる。なお、この開口49aは複数設けることが好ましい。さらに周方向に等間隔に設けることが好ましい。他の構成については、上記エアゾール容器1、2と略同様であり、例えば内袋20Bにおいても、バルブアッセンブリ31を押し下げる前は、図3に示す内袋20と同様に、重畳部21は形成されておらず、バルブアッセンブリ30を押し下げることで初めて重畳部21が形成される。内袋20Bの肉厚についても上記内袋20、20Aと同様であり、首部20dの肉厚は0.3〜0.5mmと薄肉とされている。   In the valve assembly 31 configured as described above, since a space for storing the stock solution C is hardly formed from the outer peripheral portion 48c to the housing 49, the residual of the stock solution C is suppressed as compared with the double aerosol containers 1 and 2 shown in FIGS. be able to. Further, it is not necessary to provide the housing cover 47. By providing the opening 49 a on the side surface of the housing 49, the stock solution C can be discharged to the end even if the inner bag 20 </ b> B contracts to be in close contact with the housing 49. A plurality of openings 49a are preferably provided. Furthermore, it is preferable to provide at equal intervals in the circumferential direction. Other configurations are substantially the same as those of the aerosol containers 1 and 2 described above. For example, also in the inner bag 20B, before the valve assembly 31 is pushed down, the overlapping portion 21 is formed as in the inner bag 20 shown in FIG. However, the overlapping portion 21 is formed only when the valve assembly 30 is pushed down. The thickness of the inner bag 20B is the same as that of the inner bags 20, 20A, and the thickness of the neck portion 20d is as thin as 0.3 to 0.5 mm.

以上に、この発明の代表的な実施形態について説明したが、この発明は上記実施形態に限定されるものではなく、この発明の範囲内で種々変更して実施することが可能である。例えば、蛇腹部の角度αを大きくしても良い。蛇腹部の角度αを大きくすることにより蛇腹部の横方向(半径方向)の剛性が小さくなるため、バルブアッセンブリを外容器に装着したときに重畳部21が形成されなくても蛇腹部全体が変形しやすく、原液の残量が少なくなる。蛇腹部の角度αを大きくする方法としては、例えば、蛇腹部を図3の蛇腹部20eよりも長くし、その分首部の基部20fを短くする、などがあげられる。
また、蛇腹部20eの山折り部Mや谷折り部Vの数は2つに限らず、1つや3つ以上であっても良い。重畳部21が形成される位置も、最も上の山折り部M、谷折り部Vに限らず、最も下や中間の山折り部M、谷折り部Vに形成されるようにしても良い。
As mentioned above, although typical embodiment of this invention was described, this invention is not limited to the said embodiment, It can be implemented in various changes within the scope of this invention. For example, the bellows angle α may be increased. By increasing the angle α of the bellows portion, the rigidity in the lateral direction (radial direction) of the bellows portion is reduced. Therefore, the entire bellows portion is deformed even if the overlapping portion 21 is not formed when the valve assembly is mounted on the outer container. Easy to use, and the remaining amount of the stock solution is reduced. As a method of increasing the angle α of the bellows portion, for example, the bellows portion is made longer than the bellows portion 20e of FIG. 3, and the base portion 20f of the neck portion is shortened accordingly.
Further, the number of the mountain folds M and the valley folds V of the bellows part 20e is not limited to two, and may be one or three or more. The position where the overlapping portion 21 is formed is not limited to the uppermost mountain fold portion M and the valley fold portion V, and may be formed at the lowermost or middle mountain fold portion M and valley fold portion V.

1、2、3 二重エアゾール容器
10 外容器
10a 開口部
10b 底部
10c 胴部
10d 括れ部
10e 立ち上がり部
20、20A、20B 内袋
20a 開口部
20b 底部
20c 胴部
20d 首部
20e 蛇腹部
20f 基部
20g 拡径部
20h バルブ嵌合部
20e1 内側傾斜部
20e2 外側傾斜部
21 重畳部
22 括れ部
30、31 バルブアッセンブリ
40 バルブ
41 ハウジング
41a 内筒
41b 外周壁
41c 天板
41d 垂直リブ
41e 内周面側の溝
41f 外周面側の溝
41g 底部
41h 下筒
41i 小孔
41j 凸部
41k 段部(下段)
41m 段部(上段)
41n フランジ部
42 バルブ機構
43 ステム
43a ステム孔
44 ステムラバー
45 カバー体
46 弾性体
47 ハウジングカバー
47a 開口部
47b 底部
47c 拡径部
47d スリット
48 マウンティングカップ
48a ハウジング保持部
48b 深溝
48c 外周部
48d フランジ部
49 ハウジング
49a 開口
50 ガスケット
60 カバーキャップ
C 原液
P 加圧剤
M 山折り部
V 谷折り部
1, 2, 3 Double aerosol container 10 Outer container 10a Opening part 10b Bottom part 10c Body part 10d Constriction part 10e Standing part 20, 20A, 20B Inner bag 20a Opening part 20b Bottom part 20c Body part 20d Neck part 20e Bellows part 20f Base part 20g Expansion Diameter portion 20h Valve fitting portion 20e1 Inner inclined portion 20e2 Outer inclined portion 21 Superposed portion 22 Constricted portion 30, 31 Valve assembly 40 Valve 41 Housing 41a Inner cylinder 41b Outer wall 41c Top plate 41d Vertical rib 41e Inner peripheral surface side groove 41f Outer peripheral surface side groove 41g Bottom 41h Lower cylinder 41i Small hole 41j Convex 41k Step (lower)
41m step (upper)
41n Flange portion 42 Valve mechanism 43 Stem 43a Stem hole 44 Stem rubber 45 Cover body 46 Elastic body 47 Housing cover 47a Opening portion 47b Bottom portion 47c Expanded portion 47d Slit 48 Mounting cup 48a Housing holding portion 48b Deep groove 48c Outer peripheral portion 48d Flange portion 49 Housing 49a Opening 50 Gasket 60 Cover cap C Stock solution P Pressure agent M Mountain fold V Valley fold

Claims (3)

外容器と、
外容器に収容され、内部に原液を充填するための内袋と、
外容器および内袋の開口部を閉じるバルブアッセンブリとを備え、
外容器と内袋の間の空間に充填した加圧剤によって内袋を圧縮し、原液を吐出する二重エアゾール容器であって、
内袋が合成樹脂製であり、底部と、筒状の胴部と、バルブアッセンブリを装着する首部と、胴部と首部の間に設けられた蛇腹部とを備え、外容器の内底面に底部を載置させた状態で首部が外容器の開口部から突出するものであり、首部の肉厚が0.3〜0.5mmであることを特徴とする二重エアゾール容器。
An outer container,
An inner bag that is housed in an outer container and is filled with a stock solution;
A valve assembly for closing the opening of the outer container and the inner bag,
A double aerosol container that compresses the inner bag with a pressurizing agent filled in the space between the outer container and the inner bag and discharges the stock solution,
The inner bag is made of synthetic resin, and includes a bottom portion, a cylindrical barrel portion, a neck portion to which a valve assembly is attached, and a bellows portion provided between the trunk portion and the neck portion, and a bottom portion on the inner bottom surface of the outer container. A double aerosol container, wherein the neck protrudes from the opening of the outer container in a state where is placed, and the thickness of the neck is 0.3 to 0.5 mm.
バルブアッセンブリを外容器に装着することで、内袋の蛇腹部が軸方向に圧縮されて一部が折り畳まれる、請求項1記載の二重エアゾール容器。 The double aerosol container according to claim 1, wherein by attaching the valve assembly to the outer container, the bellows part of the inner bag is compressed in the axial direction and a part thereof is folded. バルブアッセンブリが、内袋の開口部に内挿される環状の外周壁と、バルブ機構を収容するハウジングと、外周壁内でハウジングに装着されるハウジングカバーとを備えており、
ハウジングカバーの上端が外周壁で囲まれた空間内で開口している、請求項1又は2記載の二重エアゾール容器。
The valve assembly includes an annular outer peripheral wall inserted into the opening of the inner bag, a housing that houses the valve mechanism, and a housing cover that is attached to the housing within the outer peripheral wall.
The double aerosol container according to claim 1 or 2, wherein an upper end of the housing cover is opened in a space surrounded by an outer peripheral wall.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020125138A (en) * 2019-02-05 2020-08-20 メビウスパッケージング株式会社 Double structure container

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548069A (en) * 1978-09-25 1980-04-05 Rhen Beteiligung Finanz Method that fill twoochamber pressure tin and inject gas and inside vessel used for said method
JP2011136747A (en) * 2009-12-29 2011-07-14 Daizo:Kk Inner bag and double aerosol product using the same
JP2014031180A (en) * 2012-08-01 2014-02-20 Takeuchi Press Ind Co Ltd Double aerosol container and method for manufacturing the same
WO2015083642A1 (en) * 2013-12-03 2015-06-11 株式会社三谷バルブ Aerosol housing mechanism and aerosol product provided with said aerosol housing mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548069A (en) * 1978-09-25 1980-04-05 Rhen Beteiligung Finanz Method that fill twoochamber pressure tin and inject gas and inside vessel used for said method
JP2011136747A (en) * 2009-12-29 2011-07-14 Daizo:Kk Inner bag and double aerosol product using the same
JP2014031180A (en) * 2012-08-01 2014-02-20 Takeuchi Press Ind Co Ltd Double aerosol container and method for manufacturing the same
WO2015083642A1 (en) * 2013-12-03 2015-06-11 株式会社三谷バルブ Aerosol housing mechanism and aerosol product provided with said aerosol housing mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020125138A (en) * 2019-02-05 2020-08-20 メビウスパッケージング株式会社 Double structure container
JP7385994B2 (en) 2019-02-05 2023-11-24 メビウスパッケージング株式会社 double structure container

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