JP6807146B2 - Manufacturing method of multi-layer bottle product and multi-layer bottle product manufactured by the manufacturing method - Google Patents

Manufacturing method of multi-layer bottle product and multi-layer bottle product manufactured by the manufacturing method Download PDF

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JP6807146B2
JP6807146B2 JP2015026805A JP2015026805A JP6807146B2 JP 6807146 B2 JP6807146 B2 JP 6807146B2 JP 2015026805 A JP2015026805 A JP 2015026805A JP 2015026805 A JP2015026805 A JP 2015026805A JP 6807146 B2 JP6807146 B2 JP 6807146B2
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bottle
inner bottle
guide member
layer
manufacturing
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JP2017013796A (en
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山口 和洋
和洋 山口
公雄 片岡
公雄 片岡
英俊 宮本
英俊 宮本
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Daizo Corp
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Priority to US15/300,530 priority patent/US10071850B2/en
Priority to CN201580016928.1A priority patent/CN106163946B/en
Priority to PCT/JP2015/060673 priority patent/WO2015152415A1/en
Priority to EP15774311.3A priority patent/EP3127836B1/en
Priority to JP2016511653A priority patent/JP6603653B2/en
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この発明は、多層ボトル製品の製造方法および該製造方法により製造された多層ボトル製品に関する。 The present invention relates to a method for producing a multilayer bottle product and a multilayer bottle product produced by the manufacturing method.

特許文献1には、液状の原液を外ボトルと内ボトルとの間に充填してなる二層ボトル製品が開示されている。この二層ボトル製品は、原液充填前においては、外ボトルの内面と内ボトルの外面とが殆ど隙間無く当接しており、原液を充填(圧入)することで生じる、内ボトルの収縮変形によって初めて両者間に隙間(原液を貯留するための貯留部)が形成されるようになっている。なお、この二層ボトル製品では、内ボトル内に加圧剤が充填されており、収縮変形した内ボトルが加圧剤の圧力によって元の形に戻ろうとすることで、前記貯留部に充填された原液が外部に吐出される仕組みになっている。 Patent Document 1 discloses a two-layer bottle product in which a liquid stock solution is filled between an outer bottle and an inner bottle. In this double-layer bottle product, before filling the undiluted solution, the inner surface of the outer bottle and the outer surface of the inner bottle are in contact with each other with almost no gap, and it is the first time due to the shrinkage deformation of the inner bottle caused by filling (press-fitting) the undiluted solution. A gap (reservoir for storing the undiluted solution) is formed between the two. In this two-layer bottle product, the inner bottle is filled with a pressurizing agent, and the shrink-deformed inner bottle tries to return to its original shape by the pressure of the pressurizing agent, so that the storage portion is filled. The undiluted solution is discharged to the outside.

特許第5487011号公報Japanese Patent No. 5487011

ところで、上記二層ボトル製品を製造するにあたっては、以下のような問題があることが本発明者らの検討により判明した。すなわち、外ボトルと内ボトルとの間の貯留部に原液を充填していくと、外ボトルの内面と内ボトルの外面とが殆ど隙間無く当接しているため、原液が充填されない部分ができ易い。特に、内ボトルの肩部の前記貯留部に連通する通路近辺に収縮変形が集中し易く、原液が偏在してしまうといった問題を抱えていたのである。 By the way, it has been found by the studies of the present inventors that there are the following problems in manufacturing the above-mentioned double-layer bottle product. That is, when the storage portion between the outer bottle and the inner bottle is filled with the undiluted solution, the inner surface of the outer bottle and the outer surface of the inner bottle are in contact with each other with almost no gap, so that a portion where the undiluted solution is not filled is likely to be formed. .. In particular, there is a problem that the contraction deformation tends to concentrate in the vicinity of the passage communicating with the storage portion on the shoulder of the inner bottle, and the undiluted solution is unevenly distributed.

なお、例えば、内ボトル内の空気を抜く等して、原液充填前に予め内ボトルを収縮変形させておけば、原液を充填するための貯留部を確保し、通路近辺の収縮変形の集中は回避できると考えられる。ただ、この場合、内ボトルは、製造誤差で生じるような僅かな板厚の違いや凹凸に基づいて歪むように収縮することから、変形形状が製品毎に不規則となり、品質にばらつきが生じることになる。また、内ボトルが持ち上がるようにして変形したり、底部を巻き込むようにして変形したりすることもあり、これらの変形により貯留部と連通する通路が閉鎖されたり、原液が減少しても内ボトルの形状が元に戻らず(内ボトルの外面が外ボトルの内面に当接せず)、貯留部に原液が大量に残留してしまうといった新たな問題を生じる可能性もある。 For example, if the inner bottle is contracted and deformed in advance before filling the stock solution by removing air from the inner bottle, a storage portion for filling the stock solution is secured, and the concentration of contraction deformation near the passage is concentrated. It is thought that it can be avoided. However, in this case, the inner bottle shrinks so as to be distorted based on slight differences in plate thickness and unevenness that occur due to manufacturing errors, so that the deformed shape becomes irregular for each product and the quality varies. Become. In addition, the inner bottle may be deformed by lifting it up, or it may be deformed by involving the bottom part. Due to these deformations, the passage communicating with the storage part is closed, or even if the stock solution is reduced, the inner bottle is deformed. There is a possibility that the shape of the bottle will not be restored (the outer surface of the inner bottle will not come into contact with the inner surface of the outer bottle), and a large amount of undiluted solution will remain in the storage portion.

そこで、この発明は、上記課題を解決するためになされたものであって、内ボトルの不規則な収縮を制御することのできる多層ボトル製品の製造方法を提供することを目的とする。 Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide a method for manufacturing a multilayer bottle product capable of controlling irregular shrinkage of an inner bottle.

上記課題を解決するため、本願の多層ボトル製品の製造方法は、有底筒状の外ボトル2と、外ボトル2の内面と略同一形状を有し、外ボトル2に収容される可撓性を有する内ボトル3と、外ボトル2の口部2a及び内ボトル3の口部3aを閉じる蓋体4とからなる多層ボトルに、原液5と加圧剤6とからなる内容物を充填する多層ボトル製品の製造方法であって、外ボトル2内に位置する内ボトル3内にガイド部材17、18、19、20、2
1、22、23を挿入した状態で、内ボトル3を収縮させた後、原液5と加圧剤6とをそれぞれ充填することを特徴としている。
In order to solve the above problems, the method for manufacturing a multi-layer bottle product of the present application has substantially the same shape as the bottomed tubular outer bottle 2 and the inner surface of the outer bottle 2, and is flexible to be housed in the outer bottle 2. A multi-layer bottle composed of an inner bottle 3 having an inner bottle 3 and a lid 4 for closing the mouth portion 2a of the outer bottle 2 and the mouth portion 3a of the inner bottle 3 is filled with the contents of the stock solution 5 and the pressurizing agent 6. A method for manufacturing a bottle product, in which guide members 17, 18, 19, 20, 2 are contained in an inner bottle 3 located in an outer bottle 2.
It is characterized in that the inner bottle 3 is shrunk with 1, 22, and 23 inserted, and then the undiluted solution 5 and the pressurizing agent 6 are filled, respectively.

この場合、ガイド部材17、18、19、20、21、22、23の下端部は内ボトル3の底部3c近傍に位置していることが好ましい。また、ガイド部材17、18、19、20、21、22、23の下端部が球面状であることが好ましい。 In this case, it is preferable that the lower ends of the guide members 17, 18, 19, 20, 21, 22, and 23 are located near the bottom 3c of the inner bottle 3. Further, it is preferable that the lower ends of the guide members 17, 18, 19, 20, 21, 22, and 23 are spherical.

また、内ボトル3の収縮が、外ボトル2と内ボトル3との間にガスを充填するか、内ボトル3内を減圧することによりなされることが好ましい。また、内ボトル3の収縮に際し、内ボトル3を加熱することが好ましい。 Further, it is preferable that the inner bottle 3 is contracted by filling a gas between the outer bottle 2 and the inner bottle 3 or by reducing the pressure inside the inner bottle 3. Further, it is preferable to heat the inner bottle 3 when the inner bottle 3 is contracted.

ガイド部材17、18、21、23の外面に凹凸又は隙間が形成されていることが好ましい。また、ガイド部材18、19、23が、内ボトル3内と外部とを連通するガス通路を備えていても良い。さらに、ガイド部材18、19、20、23が蓋体4に設けられていても良い。 It is preferable that irregularities or gaps are formed on the outer surfaces of the guide members 17, 18, 21 and 23. Further, the guide members 18, 19 and 23 may be provided with a gas passage that communicates the inside of the inner bottle 3 with the outside. Further, the guide members 18, 19, 20, and 23 may be provided on the lid 4.

ガイド部材17、21、23が拡縮可能に形成されていても良い。また、内ボトル3を収縮させた後、ガイド部材17、21を内ボトル3から抜き取ることが好ましい。また、ガイド部材17が袋状であって且つ弾性を有し、風船状に膨らませ又は萎ませることで拡縮可能とされていても良いし、ガイド部材21が、立設状態において円周上に並べられ且つ上下端部が束ねられた円弧状の複数の棒状体21cを有し、これら棒状体21cを下方の押し付けで径外方向に撓ませる又は下方の押し付けを開放することで拡縮可能とされていても良い。 The guide members 17, 21 and 23 may be formed so as to be expandable and contractible. Further, it is preferable to remove the guide members 17 and 21 from the inner bottle 3 after the inner bottle 3 is contracted. Further, the guide member 17 may be bag-shaped and elastic, and may be expanded or contracted by inflating or shrinking in a balloon shape, or the guide members 21 may be arranged on the circumference in an upright state. It has a plurality of arc-shaped rod-shaped bodies 21c whose upper and lower ends are bundled, and these rod-shaped bodies 21c can be expanded or contracted by bending them in the outward diameter direction by pressing downward or by releasing the downward pressing. You may.

この発明の多層ボトル構造の製造方法では、内ボトル内にガイド部材を挿入した状態で内ボトルを収縮させることから、内ボトルの収縮形状を制御して意図した形状とすることができる。そのため、製品間において内ボトルの収縮形状が略一定(つまり、内容物、特に原液の貯留部が略一定)となり、品質のばらつきを抑えることができる。また、内ボトルの収縮形状を元に戻りやすい形状とすることも可能となり、結果、原液の残留を抑制することも可能となる。なお、原液を充填する前に、予め内ボトルを収縮変形させることから、貯留部に連通する通路付近への収縮変形の集中を抑制し、貯留部への通路を確保することも可能である。 In the method for manufacturing a multi-layer bottle structure of the present invention, since the inner bottle is contracted with the guide member inserted in the inner bottle, the contraction shape of the inner bottle can be controlled to obtain an intended shape. Therefore, the shrinkage shape of the inner bottle is substantially constant between the products (that is, the storage portion of the contents, particularly the stock solution is substantially constant), and the variation in quality can be suppressed. In addition, the contracted shape of the inner bottle can be made into a shape that can easily return to the original shape, and as a result, the residual of the stock solution can be suppressed. Since the inner bottle is contracted and deformed in advance before the undiluted solution is filled, it is possible to suppress the concentration of contraction deformation in the vicinity of the passage communicating with the storage portion and secure the passage to the storage portion.

また、ガイド部材の下端部が内ボトルの底部近傍に位置されていれば、内ボトルが持ち上がるような変形や、底部を巻き込むような変形を抑制することができる。その結果、貯留部への通路を確実に確保することができ、内ボトルが元の形状に戻りやすくなり、原液の残留をさらに無くすことができる。 Further, if the lower end of the guide member is located near the bottom of the inner bottle, it is possible to suppress deformation such that the inner bottle is lifted or deformation that involves the bottom. As a result, a passage to the storage portion can be surely secured, the inner bottle can easily return to the original shape, and the residue of the undiluted solution can be further eliminated.

また、ガイド部材の下端部が球面状とされていれば、内ボトルの収縮時に内ボトルの底部をガイド部材で破いてしまう(貫いてしまう)といったことも防止される。 Further, if the lower end portion of the guide member is spherical, it is possible to prevent the bottom portion of the inner bottle from being torn (penetrated) by the guide member when the inner bottle is contracted.

さらに、内ボトルを収縮させるにあたり、外ボトルと内ボトルとの間にガスを充填すれば、内ボトルを容易に収縮変形させることができる。 Further, when the inner bottle is contracted, if a gas is filled between the outer bottle and the inner bottle, the inner bottle can be easily contracted and deformed.

また、内ボトル内を減圧する場合でも、内ボトルを容易に収縮変形させることができる。 Further, even when the pressure inside the inner bottle is reduced, the inner bottle can be easily contracted and deformed.

なお、内ボトルの収縮に際し、内ボトルを加熱すれば、内ボトルが軟化し収縮させ易くなる。 If the inner bottle is heated when the inner bottle is contracted, the inner bottle is softened and easily contracted.

ガイド部材の外面に凹凸又は隙間が形成されていれば、内ボトルを収縮させた場合に生じる弛み(ヒダ)を意図した箇所に設けることができ、製品間の品質のばらつきが抑えられ、且つ見栄えも良好となる。 If unevenness or gaps are formed on the outer surface of the guide member, slack (folds) that occurs when the inner bottle is contracted can be provided at the intended location, quality variation between products can be suppressed, and the appearance can be suppressed. Will also be good.

また、ガイド部材が、内ボトル内と連通するガス通路を備えていれば、ガイド部材を通じて内ボトル内の減圧を行うことができ、内ボトルを容易に収縮変形させることができる。 Further, if the guide member is provided with a gas passage communicating with the inside of the inner bottle, the pressure inside the inner bottle can be reduced through the guide member, and the inner bottle can be easily contracted and deformed.

また、ガイド部材を蓋体に設けていれば、蓋体をボトルに取り付けた状態で内ボトルを収縮させることができ、製造工程を簡素化できる。 Further, if the guide member is provided on the lid, the inner bottle can be contracted with the lid attached to the bottle, and the manufacturing process can be simplified.

また、ガイド部材が拡縮可能とされていれば、徐々に収縮する内ボトルを内側から支持しながら、ガイド部材を徐々に収縮させていくことができ、内ボトルをガイド部材の形状に沿って収縮させ易くなる。 Further, if the guide member is expandable and contractible, the guide member can be gradually contracted while supporting the gradually contracting inner bottle from the inside, and the inner bottle is contracted along the shape of the guide member. It becomes easy to make it.

特に、ガイド部材が風船のように膨らみ又は萎む場合には、連続的な支持が可能となる。 In particular, when the guide member swells or shrinks like a balloon, continuous support is possible.

ガイド部材が複数の棒状体からなれば、連続的な支持が可能となるとともに、内ボトルとの接触面積が小さくなり、内ボトルからの抜き取りが容易となる。 If the guide member is composed of a plurality of rod-shaped bodies, continuous support is possible, the contact area with the inner bottle is reduced, and the guide member can be easily pulled out from the inner bottle.

本発明の第1実施形態に係る二層ボトル製品を示す側面断面図である。It is a side sectional view which shows the two-layer bottle product which concerns on 1st Embodiment of this invention. 図1の蓋体近傍を拡大した側面断面図である。It is a side sectional view which enlarged the vicinity of the lid body of FIG. 図3a〜3hは、図1の二層ボトル製品の製造方法を示す側面断面図である。3a to 3h are side sectional views showing a method of manufacturing the double-layer bottle product of FIG. 1. ガイド部材の平面断面図である。It is a plan sectional view of a guide member. 本発明の第2実施形態に係る二層ボトル製品を示す側面断面図である。It is a side sectional view which shows the two-layer bottle product which concerns on 2nd Embodiment of this invention. 図6a〜6cは、図5の二層ボトル製品の製造方法を示す側面断面図である。6a to 6c are side sectional views showing a method of manufacturing the double-layer bottle product of FIG. 図7は、本発明の第3実施形態に係る二重ボトル製品を示す側面断面図である。FIG. 7 is a side sectional view showing a double bottle product according to a third embodiment of the present invention. 本発明の第4実施形態に係る二重ボトル製品を示す側面断面図である。It is a side sectional view which shows the double bottle product which concerns on 4th Embodiment of this invention. 本発明の第5実施形態に係る二層ボトル製品を示す側面断面図である。It is a side sectional view which shows the two-layer bottle product which concerns on 5th Embodiment of this invention. 図10a〜10cは、図9の二層ボトル製品の製造方法を示す側面断面図である。10a to 10c are side sectional views showing a method of manufacturing the double-layer bottle product of FIG. 9. 図11a〜11fは、本発明の第6実施形態に係る二層ボトル製品の製造方法を示す側面断面図である。11a to 11f are side sectional views showing a method for manufacturing a double-layer bottle product according to a sixth embodiment of the present invention. 本発明の第7実施形態に係る三層ボトル製品を示す側面断面図である。It is a side sectional view which shows the three-layer bottle product which concerns on 7th Embodiment of this invention. 図13a〜13dは、図12の三層ボトル製品の製造方法を示す側面断面図である。13a to 13d are side sectional views showing a method of manufacturing the three-layer bottle product of FIG. 12.

次に、この発明の二層ボトル製品の第1実施形態について図面に基づいて詳細に説明する。図1及び図2に示す二層ボトル製品1は、外ボトル2と、その中に収納される可撓性を有する内ボトル3と、外ボトル2の口部2a及び内ボトル3の口部3aを閉じる蓋体4と、外ボトル2と内ボトル3との間(以下、貯留部と称す)に充填される原液5と、内ボトル2内に充填される加圧剤6とを備えている。以下、上記構成品について個々に説明していく。 Next, the first embodiment of the double-layer bottle product of the present invention will be described in detail with reference to the drawings. The two-layer bottle product 1 shown in FIGS. 1 and 2 includes an outer bottle 2, a flexible inner bottle 3 housed therein, a mouth portion 2a of the outer bottle 2, and a mouth portion 3a of the inner bottle 3. It is provided with a lid 4 for closing the bottle, a stock solution 5 filled between the outer bottle 2 and the inner bottle 3 (hereinafter referred to as a storage portion), and a pressurizing agent 6 filled in the inner bottle 2. .. Hereinafter, the above components will be described individually.

外ボトル2は、耐圧性を有する有底筒状であり、原液5の残量を確認できるように透光性を有している。また、図1に示すように、円筒状の胴部2bと、その下端を閉じる底部2cと、胴部2bの上端からテーパー状に縮径する肩部2dと、その上端から延びる円筒状の首部2eと、その上端の口部2aとから構成されている。首部2eの外周にネジ2fが形成されており、さらにそのネジ2fの下方には、外ボトル2をベルトコンベヤ等の搬送機械や充填機械に吊り下げ支持させるためのフランジ部2gが形成されている。
このような外ボトル2は、例えば、ポリエチレンテレフタレート、ポリシクロヘキサンジメチレンテレフタレート等のポリエステル、ナイロン等のポリアミドといった合成樹脂により耐圧性を有するように成形される。なお、透光性を有しなくなるものの、アルミニウム、ブリキ、ステンレススチール等の金属により成形しても良い。
The outer bottle 2 has a bottomed tubular shape having pressure resistance, and has translucency so that the remaining amount of the undiluted solution 5 can be confirmed. Further, as shown in FIG. 1, a cylindrical body portion 2b, a bottom portion 2c that closes the lower end thereof, a shoulder portion 2d that tapers from the upper end of the body portion 2b, and a cylindrical neck portion that extends from the upper end thereof. It is composed of 2e and a mouth portion 2a at the upper end thereof. A screw 2f is formed on the outer circumference of the neck portion 2e, and a flange portion 2g for suspending and supporting the outer bottle 2 on a transport machine such as a belt conveyor or a filling machine is formed below the screw 2f. ..
Such an outer bottle 2 is molded so as to have pressure resistance by, for example, a synthetic resin such as polyester such as polyethylene terephthalate and polycyclohexanedimethylene terephthalate and polyamide such as nylon. Although it does not have translucency, it may be molded from a metal such as aluminum, tinplate, or stainless steel.

内ボトル3は、図3aに示すように、原液5を充填する前の状態では外ボトル2の内面と当接する形状、すなわち、外ボトル2の内面と実質的に同一形状(略同一の形状)を呈している。内ボトル3は、図1に示すように、円筒状の胴部3bと、その下端を閉じる底部3cと、胴部3bの上端からテーパー状に縮径する肩部3dと、その上端から延びる円筒状の首部3eと、その上端の口部3aと、口部3aから径外方向に延びるフランジ部3fとから構成されている。また、内ボトル3には、図2に示すように、フランジ部3fの下面から首部3eの外周にかけて、貯留部と大気(外部)とを連通するための連通溝3gが形成されている。
このような内ボトル3は、例えば、ポリエチレンテレフタレート、ポリシクロヘキサンジメチレンテレフタレート等のポリエステル、ナイロン等のポリアミド、ポリエチレン、ポリプロピレン等のポリオレフィンといった合成樹脂により可撓性を有するように成形される。外ボトル3と内ボトル2は同じ材質でもよく、異なる材質であってもよい。なお、ここでいう「可撓性」には、変形後、完全な弾力復帰を生じるものは含まない。
As shown in FIG. 3a, the inner bottle 3 has a shape that comes into contact with the inner surface of the outer bottle 2 before being filled with the undiluted solution 5, that is, has substantially the same shape as the inner surface of the outer bottle 2 (substantially the same shape). Is presented. As shown in FIG. 1, the inner bottle 3 has a cylindrical body portion 3b, a bottom portion 3c that closes the lower end thereof, a shoulder portion 3d that tapers from the upper end of the body portion 3b, and a cylinder extending from the upper end thereof. It is composed of a shaped neck portion 3e, a mouth portion 3a at the upper end thereof, and a flange portion 3f extending in the outer diameter direction from the mouth portion 3a. Further, as shown in FIG. 2, the inner bottle 3 is formed with a communication groove 3g for communicating the storage portion and the atmosphere (outside) from the lower surface of the flange portion 3f to the outer circumference of the neck portion 3e.
Such an inner bottle 3 is molded so as to have flexibility by, for example, a synthetic resin such as polyester such as polyethylene terephthalate and polycyclohexanedimethylene terephthalate, polyamide such as nylon, and polyolefin such as polyethylene and polypropylene. The outer bottle 3 and the inner bottle 2 may be made of the same material or different materials. The term "flexibility" as used herein does not include those that cause a complete return to elasticity after deformation.

蓋体4は、外ボトル2の口部2a及び内ボトル3の口部3aを閉じ、貯留部と大気、内ボトル3内と大気とを連通/遮断する弁機構を備えるものであって、図2に示すように、内ボトル3の口部3aに挿入されるハウジング7と、そのハウジング7内に上下移動可能に収納されるステム8と、ステム8のステム孔8c、8fを閉塞するステムラバー10、11と、ハウジング7を覆い外ボトル2に固定されるキャップ12とから構成されている。 The lid 4 is provided with a valve mechanism that closes the mouth portion 2a of the outer bottle 2 and the mouth portion 3a of the inner bottle 3 to communicate / shut off the storage portion and the atmosphere, and the inside of the inner bottle 3 and the atmosphere. As shown in 2, the housing 7 inserted into the mouth portion 3a of the inner bottle 3, the stem 8 housed in the housing 7 so as to be vertically movable, and the stem rubber that closes the stem holes 8c and 8f of the stem 8. It is composed of 10 and 11 and a cap 12 that covers the housing 7 and is fixed to the outer bottle 2.

まず、ハウジング7について説明すると、ハウジング7は、内ボトル3の口部3aに内嵌する円筒体7aと、この円筒体7aの上底7bを径外方向に突出するように形成されたフランジ部7cと、円筒体7aの上底7bから上方に向かって延出された上側筒部7dと、下方に向かって延出された下側筒部7eとを有している。 First, the housing 7 will be described. The housing 7 has a cylindrical body 7a that is internally fitted into the mouth portion 3a of the inner bottle 3 and a flange portion formed so as to project the upper bottom 7b of the cylindrical body 7a in the outer diameter direction. It has a 7c, an upper tubular portion 7d extending upward from the upper bottom 7b of the cylindrical body 7a, and a lower tubular portion 7e extending downward.

細部について説明すると、フランジ部7cの上面には、貯留部と大気とを連通するための連通溝7fが形成されている。また、フランジ部7cの下面と円筒体7aの外周面とで構成される角部には切欠7gが形成され、この切欠7gに第1環状パッキン(平板状のリング)13が装着されている。この第1環状パッキン13は、内ボトル3の口部3aにハウジング7を挿入した状態において、内ボトル3のフランジ部3fの上端面と、ハウジング7のフランジ部7cの下面との間で圧縮され、両者間をシールしている。
また、円筒体7aには、この第1環状パッキン13の下方にも環状の凹溝7hが設けられており、この凹溝7hに第2環状パッキン(Oリング)14が装着されている。この第2環状パッキン14は、内ボトル3の口部3aにハウジング7の円筒体7aを挿入した状態において、内ボトル3の口部3aの内周面と、ハウジング7の円筒体7aの凹溝7hの底面との間で半径方向に圧縮され、両者間をシールしている。
Explaining the details, a communication groove 7f for communicating the storage portion and the atmosphere is formed on the upper surface of the flange portion 7c. Further, a notch 7g is formed in a corner portion formed by the lower surface of the flange portion 7c and the outer peripheral surface of the cylindrical body 7a, and the first annular packing (flat plate-shaped ring) 13 is attached to the notch 7g. The first annular packing 13 is compressed between the upper end surface of the flange portion 3f of the inner bottle 3 and the lower surface of the flange portion 7c of the housing 7 in a state where the housing 7 is inserted into the mouth portion 3a of the inner bottle 3. , The space between the two is sealed.
Further, the cylindrical body 7a is also provided with an annular concave groove 7h below the first annular packing 13, and a second annular packing (O-ring) 14 is mounted on the concave groove 7h. The second annular packing 14 has a concave groove on the inner peripheral surface of the mouth portion 3a of the inner bottle 3 and the cylindrical body 7a of the housing 7 in a state where the cylindrical body 7a of the housing 7 is inserted into the mouth portion 3a of the inner bottle 3. It is compressed in the radial direction with the bottom surface of 7h and seals between the two.

ところで、円筒体7aの上底7bには貫通孔7iが形成されており、その周りを囲むようにして上側筒部7dが形成されている。上側筒部7dの側面には、径外方向に突出するようにして突片7jが形成されており、この突片7jが後述するキャップ12の係合突起12aと係合している。また、突片7jの下方には貯留部と大気とを連通するための連通孔7kが形成されている。
下側筒部7eは、貫通孔7iの孔壁を下方に延長するようにして形成されている。下側筒部7eは底部7lを有しており、この底部7lには、内ボトル3内と大気とを連通するための連通孔7mが形成されている。また、この底部7lからは下方に向かって接続筒7nが延出されている。さらに、底部7lからは上方に向かって延びる、弾性変形可能な複数の突出片7oが形成されており、この突出片7oが上側筒部7dと下側筒部7eとの中空部に収納されたステム8を上方に付勢している。
By the way, a through hole 7i is formed in the upper bottom 7b of the cylindrical body 7a, and an upper tubular portion 7d is formed so as to surround the through hole 7i. On the side surface of the upper tubular portion 7d, a projecting piece 7j is formed so as to project in the out-of-diameter direction, and the projecting piece 7j is engaged with the engaging projection 12a of the cap 12 described later. Further, a communication hole 7k for communicating the storage portion and the atmosphere is formed below the projecting piece 7j.
The lower tubular portion 7e is formed so as to extend the hole wall of the through hole 7i downward. The lower tubular portion 7e has a bottom portion 7l, and the bottom portion 7l is formed with a communication hole 7m for communicating the inside of the inner bottle 3 with the atmosphere. Further, a connecting cylinder 7n extends downward from the bottom portion 7l. Further, a plurality of elastically deformable projecting pieces 7o extending upward from the bottom portion 7l are formed, and the projecting pieces 7o are housed in a hollow portion between the upper tubular portion 7d and the lower tubular portion 7e. The stem 8 is urged upward.

ステム8は、有底ステムの外周にさらにステムを設けてなる、所謂同軸ステムである。図2に示すように、底部近傍の側面には、内周側のステム(以下、内周ステムと称す)8aの内周側上端孔8bと連通する第1ステム孔8cが形成されている。また、第1ステム孔8cの上方には、外周側のステム(以下、外周ステムと称す)8dの外周側上端孔8eと連通する第2ステム孔8fが形成されている。そして、これら第1、第2ステム孔8c、8fは、ハウジング7内に収容された筒状の固定材15によって支持された第1、第2ステムラバー10、11によってそれぞれ閉塞されている。また、ステム8は、内周ステム8aの方が外周ステム8dより上方に突出しており、その先端には、図1に示すように、内周ステム8aの内周側上端孔8bを塞ぐが、外周ステム8dの外周側上端孔(内周ステム8aと外周ステム8dとの間の環状空間)8eと大気とを連通する噴射部材9が装着されている。 The stem 8 is a so-called coaxial stem in which a stem is further provided on the outer circumference of the bottomed stem. As shown in FIG. 2, a first stem hole 8c communicating with the inner peripheral side upper end hole 8b of the inner peripheral side stem (hereinafter, referred to as an inner peripheral stem) 8a is formed on the side surface near the bottom. Further, above the first stem hole 8c, a second stem hole 8f communicating with the outer peripheral side upper end hole 8e of the outer peripheral side stem (hereinafter, referred to as the outer peripheral stem) 8d is formed. The first and second stem holes 8c and 8f are closed by the first and second stem rubbers 10 and 11 supported by the tubular fixing member 15 housed in the housing 7, respectively. Further, in the stem 8, the inner peripheral stem 8a projects upward from the outer peripheral stem 8d, and as shown in FIG. 1, the inner peripheral stem 8a closes the inner peripheral side upper end hole 8b at the tip thereof. An injection member 9 that communicates the outer peripheral upper end hole (annular space between the inner peripheral stem 8a and the outer peripheral stem 8d) 8e and the atmosphere of the outer peripheral stem 8d is mounted.

キャップ12は、ハウジング7の上部を覆う上底12bを有する円筒状であって、上底12bには、ステム8を通すためのステム挿通孔12cが形成されている。また、キャップ12は、上底12bの外周端から下方に延びる上筒部12dの内周面に係合突起12aを備えており、ハウジング7の上側筒部7dに設けられた突片7jと係合する。それにより、キャップ12とハウジング7とを一体化して取り扱うことができる。さらに、キャップ12の上底12bとハウジング7の上側筒部7dによって第2ステムラバー11の外周部の位置が固定され、また、固定材15を介して第1ステムラバー10の外周部の位置も固定され、第1ステム孔8cが第1ステムラバー10の内径部分によりシールされ、第2ステム孔8fが第2ステムラバー11の内径部分でシールされる位置で保持される。また、キャップ12は、下方に下筒部12eを備えており、下筒部12eの内周面にネジ12fが形成されている。そして、ネジ12fが外ボトル2の口部2aの外周面に形成されたネジ2fと螺合することにより、外ボトル2に固定されている。
外ボトル2にキャップ12が取り付けられると、以下の作用が生じる。すなわち、外ボトル2の外周面とキャップ12の内周面との間に設けられた第3環状パッキン(Oリング)16が半径方向に圧縮される。また、ハウジング7の円筒体7aの凹溝7hに設けられた第2環状パッキン14が内ボトル3の口部3aの内周面との間で半径方向に圧縮される。加えて、キャップ12の拡径段部12gがハウジング7のフランジ部7cを下方に押圧するため、ハウジング7のフランジ部7cの下面と内ボトル3のフランジ部3fの上端面との間に位置する第1環状パッキン13が圧縮される。その結果、外ボトル2とキャップ12との間、内ボトル3とハウジング7との間、ステム8の流路は全てシールされ、貯留部に充填されている原液5は大気や内ボトル3内と遮断された状態となる。内ボトル3内に充填されている加圧剤6においても、第1ステムラバー10によって大気と遮断された状態となる。
The cap 12 has a cylindrical shape having an upper bottom 12b that covers the upper portion of the housing 7, and the upper bottom 12b is formed with a stem insertion hole 12c for passing the stem 8. Further, the cap 12 is provided with an engaging protrusion 12a on the inner peripheral surface of the upper cylinder portion 12d extending downward from the outer peripheral end of the upper bottom 12b, and engages with the projecting piece 7j provided on the upper cylinder portion 7d of the housing 7. It fits. As a result, the cap 12 and the housing 7 can be handled integrally. Further, the position of the outer peripheral portion of the second stem rubber 11 is fixed by the upper bottom 12b of the cap 12 and the upper tubular portion 7d of the housing 7, and the position of the outer peripheral portion of the first stem rubber 10 is also fixed via the fixing material 15. It is fixed and held at a position where the first stem hole 8c is sealed by the inner diameter portion of the first stem rubber 10 and the second stem hole 8f is sealed by the inner diameter portion of the second stem rubber 11. Further, the cap 12 is provided with a lower cylinder portion 12e below, and a screw 12f is formed on the inner peripheral surface of the lower cylinder portion 12e. Then, the screw 12f is fixed to the outer bottle 2 by being screwed with the screw 2f formed on the outer peripheral surface of the mouth portion 2a of the outer bottle 2.
When the cap 12 is attached to the outer bottle 2, the following actions occur. That is, the third annular packing (O-ring) 16 provided between the outer peripheral surface of the outer bottle 2 and the inner peripheral surface of the cap 12 is compressed in the radial direction. Further, the second annular packing 14 provided in the concave groove 7h of the cylindrical body 7a of the housing 7 is compressed in the radial direction with the inner peripheral surface of the mouth portion 3a of the inner bottle 3. In addition, since the enlarged diameter step portion 12g of the cap 12 presses the flange portion 7c of the housing 7 downward, it is located between the lower surface of the flange portion 7c of the housing 7 and the upper end surface of the flange portion 3f of the inner bottle 3. The first annular packing 13 is compressed. As a result, the flow paths of the stem 8 are all sealed between the outer bottle 2 and the cap 12, between the inner bottle 3 and the housing 7, and the undiluted solution 5 filled in the storage portion is in the atmosphere or in the inner bottle 3. It will be in a blocked state. The pressurizing agent 6 filled in the inner bottle 3 is also in a state of being shielded from the atmosphere by the first stem rubber 10.

外ボトル2と内ボトル3との間の貯留部に充填される原液5としては、例えば、化粧水、日焼け止め、ほてり止め、クレンジング等のスキンケア、スタイリング剤、トリートメ
ント剤、染毛剤等のヘアケア、殺菌消毒剤、水虫薬、消炎鎮痛剤、鎮痒剤、育毛剤、点鼻薬、点耳薬等の医薬品、ホイップクリーム、ダイエット飲料、スポーツ飲料、清涼飲料等の食品、室内用芳香剤、消臭剤などの家庭用品、害虫駆除剤、栄養剤などの園芸用品といった液状物、クリーム、ゲルなどが充填される。なお、原液5として、後述する発泡剤を混入させることによりフォーム状を呈して吐出するものであってもよい。
Examples of the undiluted solution 5 filled in the storage portion between the outer bottle 2 and the inner bottle 3 include skin care such as lotion, sunscreen, anti-fog, and cleansing, and hair care such as styling agents, treatment agents, and hair dyes. , Sterilizing and disinfecting agents, water bugs, anti-inflammatory analgesics, antipruritic agents, hair restorers, nasal drops, ear drops and other medicines, whipped cream, diet drinks, sports drinks, soft drinks and other foods, indoor air fresheners, deodorants It is filled with household products such as agents, liquid substances such as pest control agents and gardening products such as nutritional products, creams, and gels. The undiluted solution 5 may be discharged in the form of a foam by mixing a foaming agent described later.

内ボトル3に充填される加圧剤6としては、例えば、窒素、二酸化炭素、亜酸化窒素、酸素、圧縮空気及びこれらの混合ガス等の圧縮ガス、液化石油ガス、ジメチルエーテル、ハイドロフロオロエオレフィン及びこれらの混合ガス等の液化ガス等が挙げられる。圧縮ガスを用いる場合、二層ボトル製品1の圧力が0.1〜1.0MPa、特に0.15〜0.8MPaとなるように充填することが好ましい。 Examples of the pressurizing agent 6 filled in the inner bottle 3 include compressed gas such as nitrogen, carbon dioxide, nitrous oxide, oxygen, compressed air and a mixed gas thereof, liquefied petroleum gas, dimethyl ether, and hydrofluoroeolefin. And liquefied gas such as a mixed gas thereof. When a compressed gas is used, it is preferable to fill the double-layer bottle product 1 so that the pressure is 0.1 to 1.0 MPa, particularly 0.15 to 0.8 MPa.

上記構成の二層ボトル製品1は、噴射部材9を押し下げると、ステム8が下方に移動して第2ステムラバー11が下方に撓み、第2ステム孔8fが開口する。すると、貯留部に充填されている原液5が、内ボトル3の形状を元に戻そうとする加圧剤6の圧力によって、内ボトル3の連通溝3g、ハウジング7のフランジ部7cの連通溝7f、ハウジング7の上側筒部7dの連通孔7k、固定材15の連通溝15a、固定材15の内周面と内周ステム8aとの間の隙間を経て外周側上端孔8eから噴射部材9に送られ、噴射部材9の噴射孔から吐出される(図2の実線矢印)。なお、この際、第1ステムラバー10も下方に撓み、第1ステム孔8cが開口するが、内周ステム8aの内周側上端孔8bは、噴射部材9によって常に閉塞されるため、加圧剤6が吐出することはない。 In the two-layer bottle product 1 having the above configuration, when the injection member 9 is pushed down, the stem 8 moves downward, the second stem rubber 11 bends downward, and the second stem hole 8f opens. Then, the undiluted solution 5 filled in the storage portion receives the pressure of the pressurizing agent 6 that tries to restore the shape of the inner bottle 3, and the communication groove 3g of the inner bottle 3 and the communication groove of the flange portion 7c of the housing 7 are used. 7f, the communication hole 7k of the upper tubular portion 7d of the housing 7, the communication groove 15a of the fixing material 15, and the injection member 9 from the outer peripheral side upper end hole 8e through the gap between the inner peripheral surface of the fixing material 15 and the inner peripheral stem 8a. Is discharged from the injection hole of the injection member 9 (solid arrow in FIG. 2). At this time, the first stem rubber 10 also bends downward and the first stem hole 8c opens, but the inner peripheral end hole 8b of the inner peripheral stem 8a is always closed by the injection member 9, so that pressure is applied. The agent 6 is not discharged.

このようにして原液5が吐出されていくと、原液により収縮していた内ボトル3が膨張し、外ボトル2と内ボトル3との間の貯留部の容積が減少していき、やがて外ボトル2の内面と内ボトル3の外面とが当接するようになる。従って、外ボトル2が透光性を有していると、原液5が存する間は原液5の色が透けて見え、原液5が無くなると同時に、内ボトル3が透けて見えるようになる。なお、内ボトル3内の加圧剤6は、噴射部材9を外してステム8を押し下げることで外部に排出することができるため、安全に廃棄することができる。 When the undiluted solution 5 is discharged in this way, the inner bottle 3 that has been contracted by the undiluted solution expands, the volume of the storage portion between the outer bottle 2 and the inner bottle 3 decreases, and eventually the outer bottle The inner surface of 2 and the outer surface of the inner bottle 3 come into contact with each other. Therefore, if the outer bottle 2 has translucency, the color of the stock solution 5 can be seen through while the stock solution 5 is present, and at the same time when the stock solution 5 disappears, the inner bottle 3 can be seen through. The pressurizing agent 6 in the inner bottle 3 can be discharged to the outside by removing the injection member 9 and pushing down the stem 8, so that the pressure agent 6 can be safely disposed of.

次に、図3a〜hを用いて本発明の第1実施形態である二層ボトル製品1の製造方法について説明する。まず、外ボトル2用のプリフォームと内ボトル3用のプリフォームを射出成型等により個別に成型するとともに、内ボトル3用のプリフォームを外ボトル2用のプリフォームに挿入し、二重プリフォームを準備する。なお、この二重プリフォームは、射出成型によって一体に成形しても良い。
次に、この二重プリフォームを、ブロー金型内においてブロー(具体的には2軸延伸ブロー)等することにより、外ボトル2と内ボトル3とを同時に成型する。これにより、図3aに示すように、内ボトル3の外形は、外ボトル2の内面と当接する形状、すなわち、外ボトル2の内面と実質的に同一形状となる。
Next, a method for producing the double-layer bottle product 1 according to the first embodiment of the present invention will be described with reference to FIGS. 3a to 3h. First, the preform for the outer bottle 2 and the preform for the inner bottle 3 are individually molded by injection molding or the like, and the preform for the inner bottle 3 is inserted into the preform for the outer bottle 2 to double the plastic. Prepare for remodeling. In addition, this double preform may be integrally molded by injection molding.
Next, the outer bottle 2 and the inner bottle 3 are simultaneously molded by blowing (specifically, biaxial stretching blow) or the like in the blow mold with this double preform. As a result, as shown in FIG. 3a, the outer shape of the inner bottle 3 is in contact with the inner surface of the outer bottle 2, that is, substantially the same shape as the inner surface of the outer bottle 2.

次に、図3bに示すように、内ボトル3内にガイド部材17を挿入する。ガイド部材17は、図3及び図4に示すように、下端部が球面状に形成された、中空略棒状の弾性体であって、その下端部が内ボトル3の底部3cに当接した状態とされる。また、外周面には上下方向に延びる凸部(縦リブ)17a及び凹部(縦溝)17bが交互に且つ規則的に形成されている。さらに、上端部近傍は、内ボトル3の口部3aの内径より小径とされており、ガイド部材17を内ボトル3に挿入した状態においても、内ボトル3内と大気とは連通状態を維持できるようになっている。
このようなガイド部材17は、例えば合成ゴムやシリコーンゴムなどの弾性材料から構成される。
そして、図3cに示すように、このガイド部材17の開口にポンプ等の給排気装置(図
示しない)を接続し、内ボトル3の内面と接しない程度まで膨らませる。
Next, as shown in FIG. 3b, the guide member 17 is inserted into the inner bottle 3. As shown in FIGS. 3 and 4, the guide member 17 is a hollow substantially rod-shaped elastic body having a spherically formed lower end portion, and the lower end portion thereof is in contact with the bottom portion 3c of the inner bottle 3. It is said that. Further, convex portions (vertical ribs) 17a and concave portions (vertical grooves) 17b extending in the vertical direction are alternately and regularly formed on the outer peripheral surface. Further, the vicinity of the upper end portion has a diameter smaller than the inner diameter of the mouth portion 3a of the inner bottle 3, and even when the guide member 17 is inserted into the inner bottle 3, the inside of the inner bottle 3 and the atmosphere can be maintained in a communicative state. It has become like.
Such a guide member 17 is made of an elastic material such as synthetic rubber or silicone rubber.
Then, as shown in FIG. 3c, an air supply / exhaust device (not shown) such as a pump is connected to the opening of the guide member 17 and inflated to the extent that it does not come into contact with the inner surface of the inner bottle 3.

次に、図3dに示すように、内ボトル3の連通溝3gを通じて貯留部にガスを充填していく。ガスを充填すると、内ボトル3はその圧力によって収縮(縮径方向に圧縮)され、風船状に膨らんだガイド部材17の外面に当接する。なお、ガスは加熱したものを用いても良い。この場合、内ボトル3が軟化し収縮させ易くなる。内ボトル3内の空気については、口部3aとガイド部材17との間に生じた隙間から自然と外部に排出される。
また、図3eに示すように、ガス充填による内ボトル3の収縮に合わせて、ガイド部材17から空気を抜いていき徐々に収縮させる(萎ませていく)。この際、内ボトル3の内面がガイド部材17の外面にほぼ隙間無く当接した状態を維持するようにし、内ボトル3を内側から支持することが好ましい。このようにすることで、内ボトル3の不規則な収縮が抑制され、ガイド部材17の形状に沿って収縮変形し易くなる。
ガイド部材17を完全に収縮させた後、図3fに示すように、ガイド部材17を内ボトル3から抜き取る。なお、この際、内ボトル3はガイド部材17の外周に設けられた凹凸に沿って規則的に弛み3hが形成された状態であり、またこの状態を維持する。
Next, as shown in FIG. 3d, the storage portion is filled with gas through the communication groove 3g of the inner bottle 3. When filled with gas, the inner bottle 3 is contracted (compressed in the radial direction) by the pressure and comes into contact with the outer surface of the balloon-shaped inflated guide member 17. A heated gas may be used. In this case, the inner bottle 3 softens and easily shrinks. The air in the inner bottle 3 is naturally discharged to the outside through the gap formed between the mouth portion 3a and the guide member 17.
Further, as shown in FIG. 3e, air is evacuated from the guide member 17 and gradually contracted (withered) in accordance with the contraction of the inner bottle 3 due to gas filling. At this time, it is preferable that the inner surface of the inner bottle 3 is maintained in contact with the outer surface of the guide member 17 with almost no gap, and the inner bottle 3 is supported from the inside. By doing so, the irregular contraction of the inner bottle 3 is suppressed, and the inner bottle 3 is easily contracted and deformed along the shape of the guide member 17.
After the guide member 17 is completely contracted, the guide member 17 is pulled out from the inner bottle 3 as shown in FIG. 3f. At this time, the inner bottle 3 is in a state in which slack 3h is regularly formed along the unevenness provided on the outer circumference of the guide member 17, and this state is maintained.

そして、図3gに示すように、外ボトル2に蓋体4を螺着し、貯留部に原液5を、内ボトル2に加圧剤6を充填していく。貯留部への原液5の充填は、内周ステム8aの内周側上端孔8bを閉塞した状態において、ステム8を下方に押圧し、図2の実線矢印で示すルートを通じて行われる。このとき、内ボトル3が収縮しているため、貯留部への通路が確保されており、原液5をスムーズに充填することができる。また、内ボトル3への加圧剤6の充填は、外周ステム8dの外周側上端孔8eを閉塞した状態において、ステム8を下方に押圧し、図2の点線矢印で示すルートを通じて行われる。なお、蓋体4を取り付ける前に(図3f)、連通溝3gから貯留部に原液5を充填しても良い。 Then, as shown in FIG. 3g, the lid 4 is screwed into the outer bottle 2, the stock solution 5 is filled in the storage portion, and the pressurizing agent 6 is filled in the inner bottle 2. The storage portion is filled with the undiluted solution 5 by pressing the stem 8 downward with the inner peripheral upper end hole 8b of the inner peripheral stem 8a closed and passing through the route indicated by the solid arrow in FIG. At this time, since the inner bottle 3 is contracted, a passage to the storage portion is secured, and the undiluted solution 5 can be smoothly filled. Further, the inner bottle 3 is filled with the pressurizing agent 6 through the route indicated by the dotted arrow in FIG. 2 by pressing the stem 8 downward while the outer peripheral upper end hole 8e of the outer peripheral stem 8d is closed. Before attaching the lid 4 (FIG. 3f), the stock solution 5 may be filled in the storage portion from the communication groove 3g.

なお、加圧剤6の充填前における内ボトル3内の空気は、原液5を充填した後(図3g)、外周ステム8dの外周側上端孔8eを閉塞した状態でステム8を下方に押圧することで排出することができる。貯留部内の空気は、加圧剤6を充填する際に外周ステム8dの外周側上端孔8eを開放した状態にしておくことで排出することができる。 The air in the inner bottle 3 before filling the pressurizing agent 6 presses the stem 8 downward after filling the stock solution 5 (FIG. 3g) with the outer peripheral upper end hole 8e of the outer peripheral stem 8d closed. It can be discharged by. The air in the storage portion can be discharged by keeping the outer peripheral side upper end hole 8e of the outer peripheral stem 8d open when the pressurizing agent 6 is filled.

原液5や加圧剤6の充填後(図3h)は、内周ステム8aの噴射孔8bを閉塞した状態でステム8を押し下げ、貯留部内に残存する空気を排出し、貯留部を原液5で満たす(液密にする)。また、ステム8内に残留する原液5や加圧剤6の除去等を行い、二層ボトル製品1の製造を完了する。 After filling the stock solution 5 and the pressurizing agent 6 (FIG. 3h), the stem 8 is pushed down with the injection hole 8b of the inner peripheral stem 8a closed, the air remaining in the storage section is discharged, and the storage section is filled with the stock solution 5. Fill (make it liquidtight). Further, the stock solution 5 and the pressurizing agent 6 remaining in the stem 8 are removed to complete the production of the double-layer bottle product 1.

上記製造方法では、内ボトル3内にガイド部材17を挿入した状態で内ボトル3を収縮させることから、内ボトル3をガイド部材17に沿って収縮させることができ、内ボトル3を意図した形状に変形させることができる。そのため、製品間での品質のばらつきを抑えることができ、さらに原液5を外ボトル2と内ボトル3との間の貯留部に凡そ均一な厚みで充填することも可能となる。また、ガイド部材17の外面に凹凸を形成しているため、内ボトル3を収縮させたことによる弛み3hを意図した箇所に設けることができる。そのため、例えば外ボトル2が透光性を有していても見栄えが良く、さらに、規則的に形成された弛み3hにより、内ボトル3が元の形状に戻りやすいといった効果も生じる。 In the above manufacturing method, since the inner bottle 3 is contracted with the guide member 17 inserted in the inner bottle 3, the inner bottle 3 can be contracted along the guide member 17, and the inner bottle 3 has an intended shape. Can be transformed into. Therefore, it is possible to suppress variations in quality between products, and it is also possible to fill the storage portion between the outer bottle 2 and the inner bottle 3 with a substantially uniform thickness. Further, since the outer surface of the guide member 17 is uneven, the slack 3h due to the contraction of the inner bottle 3 can be provided at an intended location. Therefore, for example, even if the outer bottle 2 has translucency, it looks good, and further, the regularly formed slack 3h has an effect that the inner bottle 3 easily returns to its original shape.

また、ガイド部材17の下端部が収縮変形前の内ボトル3の底部3cと当接しているため、内ボトル3が持ち上がるような変形や、底部3cを巻き込むような変形を抑制することができ、内ボトル3の肩部3dによる連通路3gの閉塞を防止し、貯留部に原液5を均等に充填することができる。 Further, since the lower end portion of the guide member 17 is in contact with the bottom portion 3c of the inner bottle 3 before shrinkage deformation, it is possible to suppress deformation such that the inner bottle 3 is lifted or deformation such that the bottom portion 3c is involved. It is possible to prevent the shoulder portion 3d of the inner bottle 3 from blocking the communication passage 3g, and to evenly fill the storage portion with the stock solution 5.

さらに、内ボトル3を収縮変形させる(外ボトル2と内ボトル3との間に貯留部を形成
する)にあたって、原液5に比べて遥かに粘性の低いガスを用いることから、内ボトル3の連通溝3g付近に収縮変形が集中する虞も小さく、内ボトル3を簡単に且つ均一に収縮させることができる。また、内ボトル3の収縮に伴ってガイド部材17を収縮させる方法を合わせて採っていることから、内ボトル3をガイド部材17に沿って収縮させ易くなり、より簡単に内ボトル3を収縮させることができる。
Further, when the inner bottle 3 is contracted and deformed (a storage portion is formed between the outer bottle 2 and the inner bottle 3), a gas having a much lower viscosity than the undiluted solution 5 is used, so that the inner bottle 3 communicates with the inner bottle 3. There is little possibility that shrinkage deformation will concentrate in the vicinity of the groove 3g, and the inner bottle 3 can be easily and uniformly shrunk. Further, since the method of contracting the guide member 17 as the inner bottle 3 contracts is also adopted, the inner bottle 3 can be easily contracted along the guide member 17, and the inner bottle 3 can be contracted more easily. be able to.

次に、この発明の第2実施形態に係る二層ボトル製品1Aについて図面に基づいて詳細に説明する。この第2実施形態の二層ボトル製品1Aは、図5及び図6a〜cに示すように、ガイド部材18が蓋体4に装着されている点に特徴を有する。従って、ガイド部材18は、上記実施形態のガイド部材17と異なり、内ボトル3内から抜き取られること無く、内ボトル3内に残されたままとなる。 Next, the double-layer bottle product 1A according to the second embodiment of the present invention will be described in detail with reference to the drawings. The two-layer bottle product 1A of the second embodiment is characterized in that the guide member 18 is attached to the lid 4 as shown in FIGS. 5 and 6a to 6c. Therefore, unlike the guide member 17 of the above embodiment, the guide member 18 is not removed from the inner bottle 3 and remains in the inner bottle 3.

このガイド部材18は、例えばポリブチレンテレフタレートやポリアセタールなどの硬質樹脂からなり、図5に示すように、下端部が球面状に形成され、且つ凸部18aと凹部18bとが螺旋状に形成された中空棒状であって、その表面には、内ボトル3内と中空部18cとを連通する複数の連通孔18dが凹部18bに沿うようにして形成されている。中空部18cは、蓋体4のハウジング7の接続筒7nに装着された状態において、図2の点線矢印に示すルートを通じて大気と連通可能である。そのため、ステム8を下方に押圧すると、ガイド部材18を介して内ボトル3内と大気とが連通するようになっている。 The guide member 18 is made of a hard resin such as polybutylene terephthalate or polyacetal, and as shown in FIG. 5, the lower end portion is formed in a spherical shape, and the convex portion 18a and the concave portion 18b are formed in a spiral shape. It has a hollow rod shape, and a plurality of communication holes 18d for communicating the inside of the inner bottle 3 and the hollow portion 18c are formed on the surface thereof so as to be along the recess 18b. The hollow portion 18c can communicate with the atmosphere through the route indicated by the dotted arrow in FIG. 2 in a state of being attached to the connecting cylinder 7n of the housing 7 of the lid body 4. Therefore, when the stem 8 is pressed downward, the inside of the inner bottle 3 and the atmosphere communicate with each other via the guide member 18.

製造方法について説明すると、まず、図6aに示すように、例えば二重プリフォームを2軸延伸ブロー等で成型してなる外ボトル2と内ボトル3の口部2a、3aに、ガイド部材18を装着した蓋体4を螺着する。この際、ガイド部材18の下端部は、内ボトル3の底部3cには当接しないものの、底部3cの近傍に位置される。
次に、ステム8を下方に押圧した状態において、内周ステム8aにポンプ等の給排気装置(図示しない)を接続し、ガイド部材18の連通孔18d及び中空部18cからなるガス通路を介して、内ボトル3内の空気を抜いていく。連通孔18dは、下方に向かうに従って開口径が大きくなるように形成されていることから、内ボトル3の下方側においてもスムーズに減圧が行われるようになっている。なお、内ボトル3の減圧に際しては、外周ステム8dの噴射孔8eを開口させておき、内ボトル3の収縮に伴い、外ボトル2と内ボトル3との間に空気が供給されるようにしておく。ただ、代わりにガス(加熱ガスでも可)を充填するようにしても良い。
内ボトル3内の空気を十分に抜くと、図6bに示すように、内ボトル3はガイド部材18の外形に沿って変形する。すなわち、螺旋状に凹凸が形成された形状となる。
そして、図6cに示すように、貯留部に原液5を、内ボトル3内に加圧剤6をそれぞれ充填し、貯留部内の空気を外部に排出することで二層ボトル製品1Aの製造を完了する。なお、充填方法については、上記実施形態と同様である。ただ、加圧剤6がガイド部材18の中空部18cと連通孔18dを通じて内ボトル3内に充填される点は、本実施形態特有のものである。
Explaining the manufacturing method, first, as shown in FIG. 6a, the guide member 18 is attached to the mouth portions 2a and 3a of the outer bottle 2 and the inner bottle 3 formed by molding a double preform by biaxial stretching blow or the like. The attached lid 4 is screwed on. At this time, the lower end portion of the guide member 18 is located in the vicinity of the bottom portion 3c, although it does not abut on the bottom portion 3c of the inner bottle 3.
Next, with the stem 8 pressed downward, an air supply / exhaust device (not shown) such as a pump is connected to the inner peripheral stem 8a via a gas passage including a communication hole 18d and a hollow portion 18c of the guide member 18. , The air in the inner bottle 3 is evacuated. Since the communication hole 18d is formed so that the opening diameter increases toward the lower side, the pressure is smoothly reduced even on the lower side of the inner bottle 3. When the inner bottle 3 is depressurized, the injection hole 8e of the outer stem 8d is opened so that air is supplied between the outer bottle 2 and the inner bottle 3 as the inner bottle 3 contracts. deep. However, it may be filled with gas (heating gas may be used) instead.
When the air inside the inner bottle 3 is sufficiently evacuated, the inner bottle 3 is deformed along the outer shape of the guide member 18 as shown in FIG. 6b. That is, the shape is such that irregularities are formed in a spiral shape.
Then, as shown in FIG. 6c, the storage portion is filled with the undiluted solution 5 and the inner bottle 3 is filled with the pressurizing agent 6, and the air in the storage portion is discharged to the outside to complete the production of the double-layer bottle product 1A. To do. The filling method is the same as that of the above embodiment. However, the point that the pressurizing agent 6 is filled in the inner bottle 3 through the hollow portion 18c of the guide member 18 and the communication hole 18d is peculiar to the present embodiment.

本実施形態の二層ボトル製品1Aの製造方法では、蓋体4を取り付けた状態で内ボトル3の収縮を行うことから、内ボトル3内への空気の戻り等に注意を払う必要が無く、内ボトル3の収縮作業を簡単に行うことができるといった利点がある。また、ガイド部材18を抜き取らないので、その分、作業工程が簡略化される。 In the method for manufacturing the double-layer bottle product 1A of the present embodiment, since the inner bottle 3 is contracted with the lid 4 attached, it is not necessary to pay attention to the return of air into the inner bottle 3. There is an advantage that the shrinking work of the inner bottle 3 can be easily performed. Moreover, since the guide member 18 is not pulled out, the work process is simplified accordingly.

次に、この発明の第3実施形態に係る二層ボトル製品1Bについて図面に基づいて詳細に説明する。この第3実施形態の二層ボトル製品1Bは、図7aに示すように、第2実施形態の二層ボトル製品1Aと比較して、ガイド部材19が中空部19aを有する内外平滑なチューブ状であり、その下端部に、中空部19aの開口を側方に向ける球状のアタッチメント19bを有している点に特徴を有する。 Next, the double-layer bottle product 1B according to the third embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 7a, the double-layer bottle product 1B of the third embodiment has a tube shape in which the guide member 19 has a hollow portion 19a and is smooth inside and outside as compared with the double-layer bottle product 1A of the second embodiment. It is characterized in that it has a spherical attachment 19b at the lower end thereof, which directs the opening of the hollow portion 19a to the side.

このようなガイド部材19であっても、内ボトル3が持ち上がるような変形や、底部3cを巻き込むような変形を抑制することができる。また、下端部が球状(球面状)であるため、内ボトル3の収縮時にガイド部材19で内ボトル3の底部3cを破いてしまう(貫いてしまう)といったことが防止される。 Even with such a guide member 19, it is possible to suppress deformation such that the inner bottle 3 is lifted and deformation such that the bottom portion 3c is involved. Further, since the lower end portion is spherical (spherical), it is possible to prevent the guide member 19 from breaking (penetrating) the bottom portion 3c of the inner bottle 3 when the inner bottle 3 is contracted.

また、この第3実施形態の二層ボトル製品1Bは、第2実施形態の二層ボトル製品1Aと比較して、原液5と加圧剤6の充填位置が異なる(反対とされている)点に特徴を有する。具体的に説明すると、本実施形態では、内ボトル3に原液5を充填し、貯留部に加圧剤6を充填するようにしている。噴射部材9Aは、内周ステム8aの内周側上端孔8bと大気とは連通するが、外周ステム8dの外周側上端孔8eは常に閉塞する構成とされている。従って、内ボトル3に充填された原液5はガイド部材19のアタッチメント19bの側面開口から中空部19aを通り、第1ステム孔8c、内周側上端孔8bを経由して噴射部材9Aから吐出するが、外ボトル2と内ボトル3との間の貯留部に充填された加圧剤6は吐出することがない。この二層ボトル製品1Bは、原液5の吐出に伴い、内ボトル3が収縮するが、中空部19aの開口が側方に向いているため、収縮する内ボトル3によって開口が閉塞されるのを抑制することができる。 Further, the double-layer bottle product 1B of the third embodiment is different from the double-layer bottle product 1A of the second embodiment in the filling positions of the stock solution 5 and the pressurizing agent 6 (opposite). It has the characteristics of. More specifically, in the present embodiment, the inner bottle 3 is filled with the undiluted solution 5, and the storage portion is filled with the pressurizing agent 6. The injection member 9A communicates with the inner peripheral side upper end hole 8b of the inner peripheral stem 8a and the atmosphere, but the outer peripheral side upper end hole 8e of the outer peripheral stem 8d is always closed. Therefore, the undiluted solution 5 filled in the inner bottle 3 is discharged from the injection member 9A through the hollow portion 19a through the side opening of the attachment 19b of the guide member 19 and via the first stem hole 8c and the inner peripheral side upper end hole 8b. However, the pressurizing agent 6 filled in the storage portion between the outer bottle 2 and the inner bottle 3 is not discharged. In this double-layer bottle product 1B, the inner bottle 3 shrinks as the undiluted solution 5 is discharged, but since the opening of the hollow portion 19a faces sideways, the opening is closed by the shrinking inner bottle 3. It can be suppressed.

次に、この発明の第4実施形態に係る二層ボトル製品1Cについて図面に基づいて詳細に説明する。この第4実施形態の二層ボトル製品1Cは、図8に示すように、第3実施形態の二層ボトル製品1Bと比較して、ガイド部材20が中空部を有さない点、貯留部に原液5を充填し内ボトル3に加圧剤6を充填する点に特徴を有する。 Next, the double-layer bottle product 1C according to the fourth embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 8, the double-layer bottle product 1C of the fourth embodiment has a storage portion in that the guide member 20 does not have a hollow portion as compared with the double-layer bottle product 1B of the third embodiment. It is characterized in that the undiluted solution 5 is filled and the inner bottle 3 is filled with the pressurizing agent 6.

このようなガイド部材20においても、内ボトル3が持ち上がるような変形や、底部3cを巻き込むような変形を抑制することができる。また、下端部が球状(球面状)であるため、内ボトル3の収縮時にガイド部材20で内ボトル3の底部3cを破いてしまう(貫いてしまう)といったことが防止される。なお、ガイド部材20をハウジング7の接続筒7nに取り付けることから、ハウジング7の下側筒部7eの側面に連通孔7pを設けておき、ここから内ボトル3内の空気を抜いたり、加圧剤6を充填および廃棄時に排出できるようにしておく。 Even in such a guide member 20, it is possible to suppress deformation such that the inner bottle 3 is lifted and deformation such that the bottom portion 3c is involved. Further, since the lower end portion is spherical (spherical), it is possible to prevent the guide member 20 from breaking (penetrating) the bottom portion 3c of the inner bottle 3 when the inner bottle 3 is contracted. Since the guide member 20 is attached to the connection cylinder 7n of the housing 7, a communication hole 7p is provided on the side surface of the lower cylinder portion 7e of the housing 7, and the air in the inner bottle 3 is evacuated or pressurized. The agent 6 is prepared so that it can be discharged at the time of filling and disposal.

図9及び図10は、さらに本発明の第5実施形態に係る二層ボトル製品1Dを示したものである。この第5実施形態の二層ボトル製品1Dは、図10aまたは図10bに示すように、ガイド部材21に特徴を有する。すなわち、第1実施形態の二層ボトル製品1においては、中空棒状であって風船のように膨らむガイド部材17を用いていたが、本実施形態では、骨組みだけで構成されたようなガイド部材21を用いている。 9 and 10 further show the double-layer bottle product 1D according to the fifth embodiment of the present invention. The double-layer bottle product 1D of the fifth embodiment is characterized by the guide member 21 as shown in FIG. 10a or FIG. 10b. That is, in the two-layer bottle product 1 of the first embodiment, the guide member 17 which is hollow rod-shaped and inflates like a balloon is used, but in the present embodiment, the guide member 21 which is composed of only the skeleton is used. Is used.

具体的に説明すると、ガイド部材21は、内ボトル3の口部3aを塞ぐ栓体21aと、栓体21aを貫通し内ボトル3内と大気とを連通するガス通路を形成するパイプ21bと、パイプ21bの下端部に取り付けられた複数の棒状体21cとから構成されている。棒状体21cは例えばステンレス製の棒材(線材)を円弧状に湾曲形成したものであって弾性を有している。また、上端部及び下端部が回転を許容するピンによって連結され、さらに中間部にもピンが設けられている。そして、立設状態において、円弧の突出側を外側に向けるようにして円周上に並べられた状態で束ねられている。そのため、図10bに示すように、ガイド部材21を内ボトル3内に挿入した状態において、棒状体21cの下端部を内ボトル3の底部3cに押し付けると、棒状体21cの中間部が外側に広がるようにして膨らむ。この状態において、第1実施形態と同様に、外ボトル2と内ボトル3との間にガス(加熱ガスでも可)を充填するとともに、ガイド部材21のパイプ21bから内ボトル3内の空気をポンプ等の給排気装置(図示しない)を用いて抜くことで、内ボトル3をガイド部材21に沿って収縮させる。この際、内ボトル3は、棒状体21c、21c間の
隙間に入り込むようにして変形するため、収縮によって生じる弛み3hが規則的に形成されることになる。
その後、ガイド部材21の押し付けを内ボトル3の収縮に合わせて徐々に開放していき、棒状体21cを元の形状に収縮させてから内ボトル3から抜き取る。そして、図10cに示すように、蓋体4を取り付けた後、貯留部に原液5を、内ボトル3内に加圧剤6をそれぞれ充填することで製造を完了する。なお、充填方法については、上記実施形態と同様である。
Specifically, the guide member 21 includes a plug 21a that closes the mouth portion 3a of the inner bottle 3, a pipe 21b that penetrates the plug 21a and forms a gas passage that communicates the inside of the inner bottle 3 with the atmosphere. It is composed of a plurality of rod-shaped bodies 21c attached to the lower end of the pipe 21b. The rod-shaped body 21c is formed by, for example, a stainless steel rod (wire) curved in an arc shape and has elasticity. Further, the upper end portion and the lower end portion are connected by a pin that allows rotation, and a pin is also provided in the intermediate portion. Then, in the upright state, they are bundled in a state of being arranged on the circumference so that the protruding side of the arc faces outward. Therefore, as shown in FIG. 10b, when the lower end portion of the rod-shaped body 21c is pressed against the bottom portion 3c of the inner bottle 3 in the state where the guide member 21 is inserted into the inner bottle 3, the intermediate portion of the rod-shaped body 21c expands outward. It swells like this. In this state, as in the first embodiment, gas (heating gas may be used) is filled between the outer bottle 2 and the inner bottle 3, and the air in the inner bottle 3 is pumped from the pipe 21b of the guide member 21. The inner bottle 3 is contracted along the guide member 21 by pulling it out using an air supply / exhaust device (not shown). At this time, since the inner bottle 3 is deformed so as to enter the gap between the rod-shaped bodies 21c and 21c, the slack 3h caused by the contraction is regularly formed.
After that, the pressing of the guide member 21 is gradually released in accordance with the contraction of the inner bottle 3, the rod-shaped body 21c is contracted to the original shape, and then the rod-shaped body 21c is withdrawn from the inner bottle 3. Then, as shown in FIG. 10c, after the lid 4 is attached, the storage portion is filled with the undiluted solution 5, and the inner bottle 3 is filled with the pressurizing agent 6, respectively, to complete the production. The filling method is the same as that of the above embodiment.

本実施形態の二層ボトル製品1Dの製造方法では、ガイド部材21が主に棒状体21cで構成されているため、内ボトル3の内面との接触面積が小さくなり、内ボトル3からの抜き取り作業が容易となる。また、図3a〜hの第1実施形態の場合、内ボトル3が収縮することによる弛み3hの深さに制限がある、すなわち、ガイド部材17の凹凸の深さが限度となるが、本実施形態の場合はそのような制限はなく、無理なく内ボトル3を収縮させることができるといった利点がある。また、下端部が回転を許容するピンとされており、球面状とされていることから、内ボトル3の収縮時にガイド部材21で内ボトル3の底部3cを破いてしまう(貫いてしまう)といったことも防止される。 In the method for manufacturing the two-layer bottle product 1D of the present embodiment, since the guide member 21 is mainly composed of the rod-shaped body 21c, the contact area with the inner surface of the inner bottle 3 becomes small, and the work of extracting from the inner bottle 3 Becomes easier. Further, in the case of the first embodiment of FIGS. 3a to 3h, the depth of the slack 3h due to the contraction of the inner bottle 3 is limited, that is, the depth of the unevenness of the guide member 17 is the limit. In the case of the form, there is no such limitation, and there is an advantage that the inner bottle 3 can be contracted without difficulty. Further, since the lower end portion is a pin that allows rotation and has a spherical shape, the guide member 21 breaks (penetrates) the bottom portion 3c of the inner bottle 3 when the inner bottle 3 contracts. Is also prevented.

次に、この発明の第6実施形態に係る二層ボトル製品1Eについて図面に基づいて詳細に説明する。この第6実施形態の二層ボトル製品1Eは、図11に示すように、第1実施形態の二層ボトル製品1と比較して、ガイド部材22が単純な形状、例えば断面が円形や楕円形、多角形とされた柱状(棒状)とされている点に特徴を有する。この場合であっても、内ボトル3の収縮後の形状は略一定となり、内ボトル3の不規則な収縮を抑制することができる。製造方法としては、ガイド部材17を膨らませる工程、及びガイド部材17を萎ませる工程を有しない他は、第1実施形態と同様であることから、その工程を図11a〜図11fに示し、具体的な説明は省略する。なお、本実施形態においても、ガイド部材22の下端部は球面状に形成されており、内ボトル3の収縮時にガイド部材22で内ボトル3の底部3cを破いてしまう(貫いてしまう)といったことが防止される。 Next, the double-layer bottle product 1E according to the sixth embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 11, in the double-layer bottle product 1E of the sixth embodiment, the guide member 22 has a simple shape, for example, a circular or elliptical cross section as compared with the double-layer bottle product 1 of the first embodiment. It is characterized by the fact that it has a polygonal columnar shape (rod shape). Even in this case, the shape of the inner bottle 3 after shrinkage becomes substantially constant, and irregular shrinkage of the inner bottle 3 can be suppressed. The manufacturing method is the same as that of the first embodiment except that it does not have a step of inflating the guide member 17 and a step of inflating the guide member 17, and therefore the steps are shown in FIGS. 11a to 11f. Description will be omitted. Also in this embodiment, the lower end portion of the guide member 22 is formed in a spherical shape, and the guide member 22 breaks (penetrates) the bottom portion 3c of the inner bottle 3 when the inner bottle 3 contracts. Is prevented.

次に、この発明の第7実施形態に係る三層ボトル製品1Fについて図面に基づいて詳細に説明する。この第7実施形態の三層ボトル製品1Fは、図12及び図13に示すように、内ボトル3内にさらにパウチ24を設けている点、パウチ24とチューブ25がガイド部材23として作用する点に特徴を有する。
パウチ24は、アルミ箔などの金属箔の両面にポリエチレンやポリエチレンテレフタレートなどの樹脂シートをラミネートするとともに袋状に形成し、チューブ25に溶着などにより取り付けたものであって、貯留部とは別に原液5を充填可能とされている。チューブ25は、上端にハウジング7の接続筒7nに装着する装着部25aを備え、その下部にパウチ24を溶着するための溶着部25bを備え、さらにその下方に複数のくびれ部25cを備え、下端に、下面が球面状とされた円盤状の底部25dを備えている。このような三層ボトル製品1Gでは、貯留部とパウチ24とで異なる種類の原液5を充填することができ、例えば2液式染毛剤等、2液を混合させる必要があるものや発泡剤を用いるものにおいて特に好適である。
Next, the three-layer bottle product 1F according to the seventh embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 12 and 13, the three-layer bottle product 1F of the seventh embodiment further provides a pouch 24 in the inner bottle 3, and the pouch 24 and the tube 25 act as a guide member 23. It has the characteristics of.
The pouch 24 is formed by laminating a resin sheet such as polyethylene or polyethylene terephthalate on both sides of a metal foil such as aluminum foil and forming it in a bag shape, and is attached to a tube 25 by welding or the like, and is a stock solution separate from a storage portion. It is said that 5 can be filled. The tube 25 is provided with a mounting portion 25a to be mounted on the connection cylinder 7n of the housing 7 at the upper end, a welding portion 25b for welding the pouch 24 at the lower end thereof, and a plurality of constricted portions 25c below the mounting portion 25c. A disk-shaped bottom portion 25d having a spherical lower surface is provided. In such a three-layer bottle product 1G, different types of undiluted solution 5 can be filled in the storage portion and the pouch 24, and for example, a two-component hair dye or a foaming agent that requires mixing of two solutions. Is particularly suitable for those using.

なお、三層ボトル製品1Fは、以下のようにして製造される。まず、ブロー成形した外ボトル2と内ボトル3に、蓋体4に装着されたチューブ25及びパウチ24を挿入する(図13a)。この際、蓋体4を浮かせた状態、すなわち、第1〜3環状パッキン13、14、16を利かせない状態とする。
次に、外ボトル2と内ボトル3の間の貯留部にガスを充填し、内ボトル3を収縮させるが、この際、パウチ24とチューブ25がガイド部材23として機能し、内ボトル3はパウチ24の外面に沿って収縮変形する(図13b)。なお、内ボトル3を収縮させる際に、パウチ24の内部に空気などを充填しておけば、内ボトル3の収縮形状や大きさを調整
することができるため、図3の製造方法と同様に、パウチ24内の空気を排出しながら内ボトル3を収縮させることもできる。
そして、内ボトル3とハウジング7との隙間から、内ボトル3内に加圧剤6を充填し、充填完了と同時に蓋体4を外ボトル2に対して完全に螺着させ、密封する(いわゆるアンダーカップ充填:図13c)。
その後、貯留部に外周ステム8dを通じて第1原液5aを充填する。さらに、パウチ24内に内周ステム8aとチューブ25の中空部25e及び連通孔25fを通じて第2原液5bを充填する(図12及び図13d)。そして、ステム8に噴射部材9Bを取り付けることで、三層ボトル製品1Fの製造を完了する。なお、噴射部材9Bは、内周ステム8aの内周側上端孔8b、外周ステム8dの外周側上端孔8eのいずれも閉塞しない構成とされており、噴射部材9Bを押し下げることにより、貯留部の第1原液5aとパウチ24内の第2原液5bの双方が噴射部材9Bから吐出するようになっている。
The three-layer bottle product 1F is manufactured as follows. First, the tube 25 and the pouch 24 attached to the lid 4 are inserted into the blow-molded outer bottle 2 and inner bottle 3 (FIG. 13a). At this time, the lid 4 is in a floating state, that is, the first to third annular packings 13, 14 and 16 are not used.
Next, the storage portion between the outer bottle 2 and the inner bottle 3 is filled with gas to contract the inner bottle 3. At this time, the pouch 24 and the tube 25 function as the guide member 23, and the inner bottle 3 is the pouch. It contracts and deforms along the outer surface of 24 (FIG. 13b). When the inner bottle 3 is contracted, the shrinkage shape and size of the inner bottle 3 can be adjusted by filling the inside of the pouch 24 with air or the like. Therefore, the same as the manufacturing method of FIG. The inner bottle 3 can be contracted while discharging the air in the pouch 24.
Then, the pressurizing agent 6 is filled in the inner bottle 3 through the gap between the inner bottle 3 and the housing 7, and at the same time when the filling is completed, the lid 4 is completely screwed to the outer bottle 2 and sealed (so-called). Undercup filling: FIG. 13c).
Then, the storage portion is filled with the first stock solution 5a through the outer peripheral stem 8d. Further, the pouch 24 is filled with the second stock solution 5b through the inner peripheral stem 8a, the hollow portion 25e of the tube 25, and the communication hole 25f (FIGS. 12 and 13d). Then, by attaching the injection member 9B to the stem 8, the production of the three-layer bottle product 1F is completed. The injection member 9B is configured so that neither the inner peripheral side upper end hole 8b of the inner peripheral stem 8a nor the outer peripheral side upper end hole 8e of the outer peripheral stem 8d is closed, and by pushing down the injection member 9B, the storage portion Both the first undiluted solution 5a and the second undiluted solution 5b in the pouch 24 are discharged from the injection member 9B.

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、外ボトル2と内ボトル3とは、2重プリフォームを2軸延伸ブロー等で同時に成型されていたが、この方法に限られることは無く、例えば、各々のボトルを別個に成型し、その後、内ボトル3を折り畳んで外ボトル2内に挿入する等、公知の種々の方法を採用可能である。また、外ボトル2と内ボトル3との二層ボトル製品に限らず、外ボトル2と内ボトル3との間や、内ボトル3の内部に、パウチではなく別途ボトルを設ける、三重以上のプリフォーム(多重プリフォーム)から形成される三層以上の多層ボトル製品としても良い。また、上記実施形態では、内ボトル3内に加圧剤を充填していたが、蓋体4に手動又は電動のポンプ機構を組み込み、内ボトル3内に加圧剤6として空気を圧入、その圧力で原液5を吐出させるようにしても良い。 Although the typical embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. For example, the outer bottle 2 and the inner bottle 3 are simultaneously molded by biaxial stretching blow or the like, but the method is not limited to this method. For example, each bottle is molded separately. After that, various known methods such as folding the inner bottle 3 and inserting it into the outer bottle 2 can be adopted. In addition, not limited to the double-layer bottle product of the outer bottle 2 and the inner bottle 3, a separate bottle is provided between the outer bottle 2 and the inner bottle 3 and inside the inner bottle 3, instead of a pouch. It may be a multi-layer bottle product having three or more layers formed from reform (multiple preform). Further, in the above embodiment, the inner bottle 3 is filled with the pressurizing agent, but a manual or electric pump mechanism is incorporated in the lid 4, and air is press-fitted into the inner bottle 3 as the pressurizing agent 6. The stock solution 5 may be discharged by pressure.

1、1A、1B、1C、1D、1E・・二層ボトル製品
1F・・三層ボトル製品
2・・外ボトル
2a・・口部
2b・・胴部
2c・・底部
2d・・肩部
2e・・首部
2f・・ネジ
2g・・フランジ部
3・・内ボトル
3a・・口部
3b・・胴部
3c・・底部
3d・・肩部
3e・・首部
3f・・フランジ部
3g・・連通溝
3h・・弛み
4・・蓋体
5・・原液
5a・・第1原液
5b・・第2原液
6・・加圧剤
7・・ハウジング
7a・・円筒体
7b・・上底
7c・・フランジ部
7d・・上側筒部
7e・・下側筒部
7f・・連通溝
7g・・切欠
7h・・凹溝
7i・・貫通孔
7j・・突片
7k・・連通孔
7l・・底部
7m・・連通孔
7n・・接続筒
7o・・突出片
7p・・連通孔
8・・ステム
8a・・内周ステム
8b・・内周側上端孔
8c・・第1ステム孔
8d・・外周ステム
8e・・外周側上端孔
8f・・第2ステム孔
9、9A、9B・・噴射部材
10・・第1ステムラバー
11・・第2ステムラバー
12・・キャップ
12a・・係合突起
12b・・上底
12c・・ステム挿通孔
12d・・上筒部
12e・・下筒部
12f・・ネジ
12g・・拡径段部
13・・第1環状パッキン
14・・第2環状パッキン
15・・固定材
15a・・連通溝
16・・第3環状パッキン
17・・ガイド部材
17a・・凸部
17b・・凹部
18・・ガイド部材
18a・・凸部
18b・・凹部
18c・・中空部
18d・・連通孔
19・・ガイド部材
19a・・中空部
19b・・アタッチメント
20・・ガイド部材
21・・ガイド部材
21a・・栓体
21b・・パイプ
21c・・棒状体
22・・ガイド部材
23・・ガイド部材
24・・パウチ
25・・チューブ
25a・・装着部
25b・・溶着部
25c・・くびれ部
25d・・底部
25e・・中空部
25f・・連通孔
1, 1A, 1B, 1C, 1D, 1E ... Double layer bottle product 1F ... Three layer bottle product 2 ... Outer bottle 2a ... Mouth 2b ... Body 2c ... Bottom 2d ... Shoulder 2e ...・ Neck part 2f ・ ・ Screw 2g ・ ・ Flange part 3 ・ ・ Inner bottle 3a ・ ・ Mouth part 3b ・ ・ Body part 3c ・ ・ Bottom part 3d ・ ・ Shoulder part 3e ・ ・ Neck part 3f ・ ・ Flange part 3g ・ ・ Communication groove 3h・ ・ Looseness 4 ・ ・ Lid body 5 ・ ・ Undiluted solution 5a ・ ・ First undiluted solution 5b ・ ・ Second undiluted solution 6 ・ ・ Pressurizer 7 ・ ・ Housing 7a ・ ・ Cylindrical body 7b ・ ・ Upper bottom 7c ・ ・ Flange part 7d・ ・ Upper cylinder part 7e ・ ・ Lower cylinder part 7f ・ ・ Communication groove 7g ・ ・ Notch 7h ・ ・ Concave groove 7i ・ ・ Through hole 7j ・ ・ Projection piece 7k ・ ・ Communication hole 7l ・ ・ Bottom part 7m ・ ・ Communication hole 7n ・ ・ Connection cylinder 7o ・ ・ Protruding piece 7p ・ ・ Communication hole 8 ・ ・ Stem 8a ・ ・ Inner circumference stem 8b ・ ・ Inner circumference side upper end hole 8c ・ ・ First stem hole 8d ・ ・ Outer circumference stem 8e ・ ・ Outer circumference side Upper end hole 8f ... 2nd stem holes 9, 9A, 9B ... Injection member 10 ... 1st stem rubber 11 ... 2nd stem rubber 12 ... Cap 12a ... Engagement protrusion 12b ... Upper bottom 12c ... Stem insertion hole 12d ・ ・ Upper cylinder part 12e ・ ・ Lower cylinder part 12f ・ ・ Screw 12g ・ ・ Diameter expansion step part 13 ・ ・ First annular packing 14 ・ ・ Second annular packing 15 ・ ・ Fixing material 15a ・ ・ Communication groove 16 ・ ・ Third annular packing 17 ・ ・ Guide member 17a ・ ・ Convex 17b ・ ・ Concave 18 ・ ・ Guide member 18a ・ ・ Convex 18b ・ ・ Concave 18c ・ ・ Hollow part 18d ・ ・ Communication hole 19 ・ ・ Guide member 19a ... Hollow part 19b ... Attachment 20 ... Guide member 21 ... Guide member 21a ... Plug body 21b ... Pipe 21c ... Rod-shaped body 22 ... Guide member 23 ... Guide member 24 ... Pouch 25 ... Tube 25a ... Mounting part 25b ... Welding part 25c ... Constricted part 25d ... Bottom 25e ... Hollow part 25f ... Communication hole

Claims (12)

有底筒状の外ボトルと、
外ボトルの内面と略同一形状を有し、外ボトルに収容される可撓性を有する内ボトルと、外ボトルの口部及び内ボトルの口部を閉じる蓋体とからなる多層ボトルに、
原液と加圧剤とからなる内容物を充填する多層ボトル製品の製造方法であって、
外ボトルと内ボトルとが、内ボトル用のプリフォームを外ボトル用のプリフォームに挿入した二重プリフォームを成型したものであり、
外ボトル内に収容済みの内ボトル内にガイド部材を挿入し、その状態で、外ボトルと内ボトルとの間にガスを充填することで内ボトルを収縮させた後、内ボトル又は外ボトルと内ボトルとの間に原液を充填し、他方に加圧剤を充填することを特徴とする多層ボトル製品の製造方法。
With a bottomed tubular outer bottle
A multi-layer bottle consisting of a flexible inner bottle that has substantially the same shape as the inner surface of the outer bottle and is housed in the outer bottle, and a lid that closes the mouth of the outer bottle and the mouth of the inner bottle.
A method for manufacturing a multi-layer bottle product that fills the contents consisting of a stock solution and a pressurizing agent.
The outer bottle and the inner bottle are molded double preforms in which the preform for the inner bottle is inserted into the preform for the outer bottle.
A guide member is inserted into the inner bottle that has been housed in the outer bottle, and in that state, the inner bottle is contracted by filling gas between the outer bottle and the inner bottle, and then the inner bottle or the outer bottle is combined. A method for producing a multi-layer bottle product, which comprises filling an undiluted solution between an inner bottle and a pressurizing agent on the other side.
ガイド部材が、内ボトル内と外部とを連通するガス通路を備えている請求項1記載の多層ボトル製品の製造方法。 Guide member, the manufacturing method of the multilayer bottle article of claim 1 Symbol mounting includes a gas passage for communicating the inner bottle and the outside. ガイド部材が蓋体に設けられている請求項1又は2記載の多層ボトル製品の製造方法。 The method for manufacturing a multilayer bottle product according to claim 1 or 2, wherein the guide member is provided on the lid. 有底筒状の外ボトルと、
外ボトルの内面と略同一形状を有し、外ボトルに収容される可撓性を有する内ボトルと、外ボトルの口部及び内ボトルの口部を閉じる蓋体とからなる多層ボトルに、
原液と加圧剤とからなる内容物を充填する多層ボトル製品の製造方法であって、
外ボトルと内ボトルとが、内ボトル用のプリフォームを外ボトル用のプリフォームに挿入した二重プリフォームを成型したものであり、
外ボトル内に収容済みの内ボトル内に、拡縮可能に形成されているガイド部材を挿入し、その状態で、内ボトルを収縮させた後、内ボトル又は外ボトルと内ボトルとの間に原液を充填し、他方に加圧剤を充填することを特徴とする多層ボトル製品の製造方法。
With a bottomed tubular outer bottle
A multi-layer bottle consisting of a flexible inner bottle that has substantially the same shape as the inner surface of the outer bottle and is housed in the outer bottle, and a lid that closes the mouth of the outer bottle and the mouth of the inner bottle.
A method for manufacturing a multi-layer bottle product that is filled with the contents of a stock solution and a pressurizing agent.
The outer bottle and the inner bottle are molded double preforms in which the preform for the inner bottle is inserted into the preform for the outer bottle.
A guide member formed to be expandable and contractible is inserted into the inner bottle contained in the outer bottle, and in that state, the inner bottle is contracted, and then the inner bottle or the undiluted solution is placed between the outer bottle and the inner bottle. A method for producing a multi-layer bottle product, which comprises filling the bottle with a pressurizing agent.
有底筒状の外ボトルと、
外ボトルの内面と略同一形状を有し、外ボトルに収容される可撓性を有する内ボトルと、外ボトルの口部及び内ボトルの口部を閉じる蓋体とからなる多層ボトルに、
原液と加圧剤とからなる内容物を充填する多層ボトル製品の製造方法であって、
外ボトルと内ボトルとが、内ボトル用のプリフォームを外ボトル用のプリフォームに挿入した二重プリフォームを成型したものであり、
外ボトル内に収容済みの内ボトル内にガイド部材を挿入し、その状態で、内ボトルを収縮させた後、ガイド部材を内ボトルから抜き取り、内ボトル又は外ボトルと内ボトルとの間に原液を充填し、他方に加圧剤を充填することを特徴とする多層ボトル製品の製造方法。
With a bottomed tubular outer bottle
A multi-layer bottle consisting of a flexible inner bottle that has substantially the same shape as the inner surface of the outer bottle and is housed in the outer bottle, and a lid that closes the mouth of the outer bottle and the mouth of the inner bottle.
A method for manufacturing a multi-layer bottle product that fills the contents consisting of a stock solution and a pressurizing agent.
The outer bottle and the inner bottle are molded double preforms in which the preform for the inner bottle is inserted into the preform for the outer bottle.
The guide member is inserted into the inner bottle contained in the outer bottle, and in that state, the inner bottle is contracted, then the guide member is pulled out from the inner bottle, and the undiluted solution is placed between the inner bottle or the outer bottle and the inner bottle. A method for producing a multi-layer bottle product, which comprises filling the bottle with a pressurizing agent.
ガイド部材が袋状であって且つ弾性を有し、風船状に膨らませ又は萎ませることで拡縮可能とされている請求項又は記載の多層ボトル製品の製造方法。 The method for producing a multi-layer bottle product according to claim 4 or 5 , wherein the guide member has a bag shape and elasticity, and can be expanded and contracted by inflating or shrinking in a balloon shape. ガイド部材が、立設状態において円周上に並べられ且つ上下端部が束ねられた円弧状の複数の棒状体を有し、これら棒状体を下方の押し付けで径外方向に撓ませる又は下方の押し付けを開放することで拡縮可能とされている請求項又は記載の多層ボトル製品の製造方法。 The guide members have a plurality of arcuate rod-shaped bodies arranged on the circumference in an upright state and the upper and lower ends are bundled, and these rod-shaped bodies are bent outward by pressing downward or downward. The method for manufacturing a multilayer bottle product according to claim 4 or 5 , wherein the expansion / contraction is possible by releasing the pressing. ガイド部材の下端部が内ボトルの底部近傍に位置している請求項1から7のいずれかに記載の多層ボトル製品の製造方法。 The method for manufacturing a multilayer bottle product according to any one of claims 1 to 7, wherein the lower end of the guide member is located near the bottom of the inner bottle. ガイド部材の下端部が球面状である請求項1から8のいずれかに記載の多層ボトル製品の製造方法。 The method for manufacturing a multilayer bottle product according to any one of claims 1 to 8, wherein the lower end portion of the guide member is spherical. 内ボトルの収縮が、内ボトル内を減圧することによりなされる請求項1からのいずれかに記載の多層ボトル製品の製造方法。 The method for producing a multilayer bottle product according to any one of claims 1 to 9 , wherein the shrinkage of the inner bottle is performed by depressurizing the inside of the inner bottle. 内ボトルの収縮に際し、内ボトルを加熱する請求項1から10のいずれかに記載の多層ボトル製品の製造方法。 The method for producing a multilayer bottle product according to any one of claims 1 to 10 , wherein the inner bottle is heated when the inner bottle is shrunk. ガイド部材の外面に凹凸又は隙間が形成されている請求項1から11のいずれかに記載の多層ボトル製品の製造方法。 The method for manufacturing a multilayer bottle product according to any one of claims 1 to 11 , wherein irregularities or gaps are formed on the outer surface of the guide member.
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