JP2665476B2 - Interior bag for double structure aerosol cans - Google Patents
Interior bag for double structure aerosol cansInfo
- Publication number
- JP2665476B2 JP2665476B2 JP4310110A JP31011092A JP2665476B2 JP 2665476 B2 JP2665476 B2 JP 2665476B2 JP 4310110 A JP4310110 A JP 4310110A JP 31011092 A JP31011092 A JP 31011092A JP 2665476 B2 JP2665476 B2 JP 2665476B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- bag
- laminate
- heat
- aerosol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000443 aerosol Substances 0.000 title claims description 28
- 239000010410 layer Substances 0.000 claims description 62
- 229910052782 aluminium Inorganic materials 0.000 claims description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 21
- 229920000642 polymer Polymers 0.000 claims description 14
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 8
- 229920002647 polyamide Polymers 0.000 claims description 8
- 239000004952 Polyamide Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims description 5
- 229920006149 polyester-amide block copolymer Polymers 0.000 claims description 5
- 229920005992 thermoplastic resin Polymers 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 4
- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical group OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 claims description 4
- 239000012793 heat-sealing layer Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 23
- 239000003915 liquefied petroleum gas Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- -1 Freon Substances 0.000 description 9
- 239000003814 drug Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000002537 cosmetic Substances 0.000 description 7
- 239000000470 constituent Substances 0.000 description 6
- 239000011888 foil Substances 0.000 description 6
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229920000098 polyolefin Polymers 0.000 description 4
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 3
- 229920000299 Nylon 12 Polymers 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000003380 propellant Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 229920000571 Nylon 11 Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 101100160821 Bacillus subtilis (strain 168) yxdJ gene Proteins 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 235000021056 liquid food Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
- B65D83/60—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant with contents and propellant separated
- B65D83/62—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant with contents and propellant separated by membranes, bags or the like
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Bag Frames (AREA)
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、二重構造エアゾール缶
内に使用される内装袋に関するものであって、より詳し
くは、加圧用ガスの内装袋への混入を効率的に抑制した
少なくとも３層構造からなる二重構造エアゾール缶用内
装袋に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner bag used in a double-structured aerosol can, and more particularly, to at least a three-layer bag capable of efficiently preventing pressurized gas from being mixed into the inner bag. The present invention relates to an interior bag for an aerosol can having a double-layer structure.
【０００２】[0002]
【従来の技術】従来から、外用薬、防虫剤等の薬剤ある
いは化粧料等を、噴射剤によってエアゾール缶内に設置
された取り出し口から噴出させる技術が知られている。
しかしながら、袋内に収納される薬剤や化粧料などが該
噴射剤と混合されることを嫌う場合等、内容物だけを外
部に放出することが望まれる場合には、いわゆる隔離方
式と呼ばれる方法、即ち、薬剤や化粧料などは内装袋に
収納され、該内装袋とエアゾール缶内壁との間に形成さ
れる空間に加圧用ガスが充填され、バルブを解放した時
に、加圧用ガス（噴射剤）の圧力により、内装袋を圧縮
変形させ、内装袋内に収容されているものが外部に噴射
される技術を用いることが行われている。2. Description of the Related Art Heretofore, there has been known a technique in which a medicine such as an external medicine, an insect repellent, a cosmetic, or the like is ejected from an outlet provided in an aerosol can by a propellant.
However, when it is desired to release only the contents to the outside, such as when it is desired that the medicine or cosmetics contained in the bag is not mixed with the propellant, a method called a so-called isolation method, That is, the medicine, cosmetics, and the like are stored in the inner bag, and the space formed between the inner bag and the inner wall of the aerosol can is filled with a pressurizing gas. When the valve is opened, the pressurizing gas (propellant) The technique of compressing and deforming the inner bag by the pressure described above and spraying the one contained in the inner bag to the outside is used.
【０００３】該加圧用ガスとしては、フロン、ＬＰＧ、
炭酸ガス、窒素ガスなどが利用可能であるが、いずれを
使用するにせよ、内装袋収納物の全てが完全に放出され
るまでは、該収納物を放出させるに十分なる圧力を保持
することが可能なものであることが必要であるうえに、
長期間、内装袋やエアゾール缶を劣化させることなく、
しかも、無害であり、環境の破壊を招くことなく、安価
なものであることが好ましい。そのような条件を満足す
るものとして、最近ではとくにＬＰＧ（液化石油ガス）
が使用されている。As the pressurizing gas, Freon, LPG,
Carbon dioxide gas, nitrogen gas, etc. can be used, but in any case, it is necessary to maintain a sufficient pressure to release the contents until all of the contents of the interior bag are completely released. It needs to be possible,
For a long period of time without deteriorating interior bags or aerosol cans,
Moreover, it is preferably harmless and inexpensive without destruction of the environment. In recent years, LPG (liquefied petroleum gas)
Is used.
【０００４】一方、内装袋を構成する材料としては、ア
ルミニウム箔の使用が試みられたが、該箔はガスバリア
ー性に優れ加圧用ガスの内装袋内への侵入を防止できる
点では好ましいものの、加圧媒体により加圧される際
に、内装袋収納物が存在しない袋の上部付近が先ず圧縮
され変形しやすいので、袋上部の内装袋収納物の通過道
が閉塞され、このため内装袋収納物がスムースに放出さ
れにくくなったり、アルミニウム層が破損されやすいと
いう欠点がある。On the other hand, the use of aluminum foil as a material for forming the inner bag has been attempted, but this foil is preferable in that it has excellent gas barrier properties and can prevent intrusion of pressurizing gas into the inner bag. When pressurized by the pressurized medium, the vicinity of the upper part of the bag in which the inner bag storage does not exist is firstly compressed and easily deformed, so that the passage of the inner bag storage at the upper part of the bag is closed, so that the inner bag storage is performed. There are drawbacks in that it is difficult for the material to be released smoothly and that the aluminum layer is easily damaged.
【０００５】アルミニウムの代わりとして、例えばポリ
エチレンなどのポリオレフィンから成るフィルムを内装
袋に使用すると、たしかに、前記アルミニウムの欠点は
解消されたものの、今度はポリオレフィンのガス透過性
に由来して加圧用ガスの内装袋内への侵入が問題となっ
ている。When a film made of a polyolefin such as polyethylene is used for the inner bag instead of aluminum, the disadvantage of aluminum is certainly solved, but this time, due to the gas permeability of the polyolefin, the pressurizing gas is reduced. Penetration into the interior bag is a problem.
【０００６】そこで、前記各材料の欠点が解消された内
装袋として、例えば、実開昭５９−１０６８８７号公報
には、二重構造エアゾール缶用内装袋の材料として、エ
チレン−酢酸ビニル共重合体ケン化物またはポリビニル
アルコール系樹脂からなる外層およびポリオレフィン系
樹脂、ポリアミド系樹脂、ポリエステル系樹脂からなる
内層との積層体を用いる技術が開示されている。ところ
が、この積層体は、機械的な強度においては優れてお
り、内層としてポリエチレンを用いているためヒートシ
ール性も優れ、強く密着された内装袋を提供できるの
で、従来から指摘されている欠点がかなり改善されたも
のの、とくに、加圧用ガスの侵入を防止するには十分で
はないという不都合さが残っている。また、実開昭６３
−１５６９８８号公報には、ガスバリアー性に優れた金
属層を含む積層体から二重構造エアゾール缶用内装袋を
製造する技術が開示されている。Therefore, as an interior bag in which the disadvantages of each of the above-mentioned materials have been eliminated, for example, Japanese Utility Model Application Laid-Open No. Sho 59-108687 discloses an ethylene-vinyl acetate copolymer as a material for an interior bag for a double structure aerosol can. There is disclosed a technique using a laminate of an outer layer made of a saponified product or a polyvinyl alcohol-based resin and an inner layer made of a polyolefin-based resin, a polyamide-based resin, or a polyester-based resin. However, this laminate has excellent mechanical strength, and has excellent heat sealability because polyethylene is used as the inner layer, and can provide a strongly adhered interior bag. Although considerably improved, the disadvantage remains, in particular that it is not sufficient to prevent the intrusion of pressurizing gas. In addition, 63
Japanese Patent Application No. 156988 discloses a technique for producing an inner bag for a double-structured aerosol can from a laminate including a metal layer having excellent gas barrier properties.
【０００７】本発明者らは、前記従来技術を認識した上
で、実験を重ね、ガスバリアー性に優れる金属層として
アルミニウムを選択し、該アルミニウムを中間層とし、
内層としてポリエチレンやポリプロピレンなどのポリオ
レフィンを、外層としてポリエステルやポリアミドから
なる積層体を得、二重構造エアゾール缶用内装袋として
の使用を試みたが、加圧用ガス、特にＬＰＧを加圧用ガ
スとして用いると、該媒体の内装袋内への侵入を防止す
ることができなかった。また前記アルミニウム層を厚く
して、通常薄いアルミニウム箔が有する微小なピンホー
ルがない状態にしても、同様に内装袋内への加圧用ガス
の侵入を防止することはできなかった。[0007] The present inventors, after recognizing the prior art, repeated experiments and selected aluminum as a metal layer having excellent gas barrier properties, and used the aluminum as an intermediate layer.
Polyolefins such as polyethylene and polypropylene were obtained as the inner layer, and a laminate made of polyester or polyamide was obtained as the outer layer, and an attempt was made to use it as an interior bag for a double-structured aerosol can. However, it was not possible to prevent the medium from entering the interior bag. Also, even if the aluminum layer is thickened and there are no fine pinholes normally included in a thin aluminum foil, the intrusion of the pressurizing gas into the interior bag cannot be similarly prevented.
【０００８】[0008]
【発明が解決しようとする課題】そこで、本発明の課題
は、上記問題を解決する優れた積層体を提供することに
ある。具体的には、加圧用ガスの侵入を防止することが
可能であり、しかもその他の必要な要件を十分に満たし
ている、二重構造エアゾール缶用内装袋として適切な積
層体を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an excellent laminate which solves the above problems. Specifically, it is necessary to provide a laminate suitable as an inner bag for a double-structured aerosol can, which can prevent intrusion of pressurizing gas and sufficiently satisfy other necessary requirements. is there.
【０００９】[0009]
【課題を解決するための手段】本発明者らは、上記課題
を解決するために度重なる実験を繰り返す中で、加圧用
ガスの内装袋内への侵入は、積層体を構成する内層のポ
リオレフィンの熱シールされた部分の断面（端面）から
加圧用ガスが侵入するという事実を発見した。そこでさ
らに研究を重ねていくうちに、中間層としてアルミニウ
ムを用い、内層として、特定のポリマー層を選択するこ
とによって、加圧用ガスの侵入を効率的に防止できると
いう知見を得、本発明に到達した。すなわち、本発明に
よれば、中間層としてアルミニウム、外層として耐熱性
の熱可塑性樹脂、内層としてヒートシール性樹脂からな
る少なくとも３層構造の積層体から構成される二重構造
エアゾール缶用内装袋において、該ヒートシール性層
が、エチレン−ビニルアルコール系共重合体またはポリ
アクリロニトリル系重合体であることを特徴とする二重
構造エアゾール缶用内装袋が提供される。本発明におい
て、とくに重要な構成は、内層を構成するヒートシール
性樹脂として、前記特定のポリマーを選択した点にあ
り、なかんずく、ヒートシール性層としてアクリロニト
リル系重合体を使用した時にその効果は著しく優れてい
る。In order to solve the above-mentioned problems, the present inventors have repeatedly conducted experiments. As a result, the penetration of the pressurizing gas into the inner bag caused the polyolefin in the inner layer constituting the laminate to be reduced. Discovered that the pressurizing gas entered from the cross section (end face) of the heat-sealed part. In the course of further research, the inventor found that by using aluminum as the intermediate layer and selecting a specific polymer layer as the inner layer, it was possible to efficiently prevent the intrusion of pressurizing gas, and reached the present invention. did. That is, according to the present invention, in the inner bag for a double-structured aerosol can composed of a laminate of at least a three-layer structure composed of aluminum as an intermediate layer, a heat-resistant thermoplastic resin as an outer layer, and a heat-sealable resin as an inner layer. Further, there is provided an interior bag for a double-structured aerosol can, wherein the heat-sealing layer is an ethylene-vinyl alcohol-based copolymer or a polyacrylonitrile-based polymer. In the present invention, a particularly important configuration is that the specific polymer is selected as the heat-sealing resin constituting the inner layer.Especially, when an acrylonitrile-based polymer is used as the heat-sealing layer, the effect is remarkable. Are better.
【００１０】[0010]
【発明の具体的構成】本発明の積層体のアルミニウム層
を構成するアルミニウムは、通常使用されている箔状の
ものを用いることができる。該アルミニウム層の厚さは
５ないし２０μ、特に７ないし１０μが好ましい。DETAILED DESCRIPTION OF THE INVENTION The aluminum constituting the aluminum layer of the laminate of the present invention may be a commonly used foil. The thickness of the aluminum layer is preferably 5 to 20 μm, particularly preferably 7 to 10 μm.
【００１１】本発明の積層体の外層は、中間層として使
用されるアルミニウムと接着性が良好な耐熱性の熱可塑
性樹脂であればどのような熱可塑性樹脂でも使用可能で
あるが、加圧用ガスと接触しても劣化されることがな
く、しかも機械的強度に優れたものが好ましく、本発明
では、とくにポリエステルあるいはポリアミドが使用さ
れる。ポリエステルあるいはポリアミドとしては、ポリ
エチレンテレフタレートなどのポリエステル、あるい
は、ナイロン６、ナイロン６６、ナイロン１１、ナイロ
ン１２、共重合ナイロンなどのポリアミドなどが使用さ
れる。該外層の厚さは１０ないし５０μ、特に１０ない
し３０μが好ましい。As the outer layer of the laminate of the present invention, any thermoplastic resin can be used as long as it is a heat-resistant thermoplastic resin having good adhesion to aluminum used as an intermediate layer. In particular, polyester or polyamide is preferably used in the present invention so as not to be degraded by contact with water and to have excellent mechanical strength. As the polyester or polyamide, polyester such as polyethylene terephthalate, or polyamide such as nylon 6, nylon 66, nylon 11, nylon 12, or copolymerized nylon is used. The thickness of the outer layer is preferably 10 to 50 μm, particularly preferably 10 to 30 μm.
【００１２】本発明では、前述したように、前記アルミ
ニウム層と接触する内層（ヒートシール層）として下記
に述べる特定の材料を使用した点に重要な技術的特徴を
有するものである。即ち、本発明の内装袋は、内層の端
面同士をヒートシールすることによって形成されるもの
であるから、内層として使用されるポリマー材料は、ヒ
ートシール性に優れるとともに、中間層を構成するアル
ミニウム層との密着性や機械的強度に優れたものである
ことが要求され、かつ、積層体を構成するシール部断面
からのガス不透過性に優れたものでなければならない。
そのような物性特性を有するものとして、本発明におい
ては、エチレン−ビニルアルコール共重合体またはポリ
アクリロニトリル系重合体を選択的に使用するものであ
る。As described above, the present invention has an important technical feature in that a specific material described below is used as an inner layer (heat seal layer) which is in contact with the aluminum layer. That is, since the interior bag of the present invention is formed by heat-sealing the end faces of the inner layer, the polymer material used as the inner layer has excellent heat-sealing properties and an aluminum layer constituting the intermediate layer. It is required to be excellent in adhesion and mechanical strength, and must be excellent in gas impermeability from the cross section of the seal portion constituting the laminate.
In the present invention, an ethylene-vinyl alcohol copolymer or a polyacrylonitrile-based polymer having such physical properties is selectively used.
【００１３】内層の構成材料としてのポリアミド系重合
体は、ヒートシール性の優れたものとして、とくに好ま
しくはナイロン１１、ナイロン１２などが使用される。As the polyamide polymer as the constituent material of the inner layer, nylon 11, nylon 12, or the like is particularly preferably used as having excellent heat sealing properties.
【００１４】また、エチレン−ビニルアルコール系重合
体としては、好ましくは、エチレン含有率が１５ないし
６０モル％のエチレン−酢酸ビニル共重合体のケン化度
９０％以上のものが使用される。なお、通常のエチレン
−ビニルアルコール系重合体は、ヒートシール性が余り
よくないため、本発明においては、ヒートシール性を有
するグレードのものを使用する。Further, as the ethylene-vinyl alcohol polymer, an ethylene-vinyl acetate copolymer having an ethylene content of 15 to 60 mol% and a saponification degree of 90% or more is preferably used. In addition, since the general ethylene-vinyl alcohol-based polymer does not have good heat-sealing properties, a grade having heat-sealing properties is used in the present invention.
【００１５】本発明のポリアクリロニトリル系重合体
は、アクリロニトリルの単独重合体、あるいはアクリロ
ニトリルと該アクリロニトリルと共重合可能なモノマー
との共重合体である。好ましくは、アクリロニトリルと
１０ないし５０％のコモノマーとの共重合体が使用され
る。該コモノマーとしては、スチレン、アクリル系モノ
マー、ジエン系モノマーなどが例示される。The polyacrylonitrile polymer of the present invention is a homopolymer of acrylonitrile or a copolymer of acrylonitrile and a monomer copolymerizable with the acrylonitrile. Preferably, a copolymer of acrylonitrile and 10 to 50% of a comonomer is used. Examples of the comonomer include styrene, acrylic monomers, diene monomers and the like.
【００１６】該内層の厚さは２０ないし７０μ、特に３
０ないし５０μが好ましい。該内層は厚みを増すとヒー
トシール強度が向上するものの、厚みが増すにしたがっ
て加圧用ガスの透過性が増すことになり、そのような意
味から７０μを超す厚みは好ましくない。The thickness of the inner layer is 20 to 70 μm, especially 3
0 to 50μ is preferred. As the thickness of the inner layer increases, the heat seal strength increases, but as the thickness increases, the permeability of the pressurizing gas increases. Therefore, a thickness exceeding 70 μm is not preferable.
【００１７】本発明の積層体は、前記３層からなる積層
体を基本構成とし、さらにその外層または内層として、
同種または他種のポリマー層を設け４層あるいはそれ以
上の層構成とすることもできるが、この場合でも、アル
ミニウムより内側の層は、エチレン−ビニルアルコール
共重合体またはポリアクリロニトリル系重合体によって
構成されていなければならない。外層としては、ポリエ
ステルとポリアミドとの２層構造とする４層構造の積層
体、あるいは内層として２層構造をとる４層以上の積層
体を例示することができる。The laminate of the present invention has a basic structure of the above three-layer laminate, and further has an outer layer or an inner layer thereof.
A polymer layer of the same type or another type may be provided to form a four-layer or more layer structure, but even in this case, the layer inside aluminum is formed of an ethylene-vinyl alcohol copolymer or a polyacrylonitrile-based polymer. Must have been. Examples of the outer layer include a four-layer laminate having a two-layer structure of polyester and polyamide, and a four or more-layer laminate having a two-layer structure as the inner layer.
【００１８】本発明の内装袋内には薬剤や化粧料等の内
容物が収納されており、その下端部に形成されるヒート
シール性層端面が露出しているが、この端面が加圧用ガ
スと接触しても、ヒートシール性層が上記特定のポリマ
ーによって構成されていることにより、加圧用ガスが内
層袋内に混入することがない。このヒートシール性の内
層は、上記特定の重合体の単独であっても、複数種を組
み合わせて用いてもよい。The interior bag of the present invention contains contents such as medicines and cosmetics, and the end face of the heat-sealable layer formed at the lower end thereof is exposed. Even if it comes into contact, the pressurizing gas does not mix into the inner bag because the heat sealable layer is made of the specific polymer. The heat-sealable inner layer may be used alone or in combination of a plurality of the above-mentioned specific polymers.
【００１９】本発明の積層体の製法は、例えば、各層を
構成するフィルムを予め調製しておき、それらのフィル
ムを接着剤でラミネートする方法、アルミニウムホイル
の両側に前記樹脂を押出し塗布する方法等、公知の方法
を採用することができる。The method for producing the laminate of the present invention includes, for example, a method of preparing films constituting each layer in advance and laminating those films with an adhesive, a method of extruding the resin on both sides of an aluminum foil, and the like. A known method can be adopted.
【００２０】この積層体から常法により、二重構造エア
ゾール缶用内装袋を製造することができる。なお、この
内装袋を製造するにあたって、内装袋内に収納されてい
る薬剤または化粧料などの内容物をとり出す樹脂部材を
予め準備しておき、該樹脂部材を積層体のヒートシール
部内にセットし、熱圧着することが好ましい。該樹脂部
材として用いられるスパウトの一例は、例えば実開平１
−１２２４５０号公報に開示されている。From this laminate, an inner bag for a double aerosol can can be produced by a conventional method. In manufacturing the inner bag, a resin member for taking out contents such as medicine or cosmetics stored in the inner bag is prepared in advance, and the resin member is set in the heat seal portion of the laminate. Then, it is preferable to perform thermocompression bonding. An example of the spout used as the resin member is, for example,
-122450.
【００２１】[0021]
【発明の効果】本発明により、加圧用ガスが内装袋内に
侵入されず、袋内の薬剤は袋に装入された状態の時と同
じ品質のものがいつでも放出され使用されることが可能
になったうえに、加圧用ガスとしてＬＰＧを使用するこ
とが可能となるために、最後までガス圧が低下すること
なく、袋内に収納された薬剤あるいは化粧料などの内容
物を、無駄なくほぼ完全に外部に放出することができ
る。なお、袋内に収納されるものとしては、調髪用品、
化粧品、液状食品など多くの商品に適用可能である。According to the present invention, the gas for pressurization is prevented from entering the inner bag, and the medicine in the bag can be released and used at any time with the same quality as when the bag is loaded. In addition, since LPG can be used as a pressurizing gas, the gas pressure does not decrease until the end, and the contents such as medicines or cosmetics stored in the bag can be used without waste. It can be released almost completely to the outside. In addition, as things stored in the bag, hair accessories,
It can be applied to many products such as cosmetics and liquid foods.
【００２２】[0022]
【実施例】＜実施例１＞ ９μ厚みのアルミニウム箔の片面にポリエチレンテレフ
タレート層を１２μ厚となるように形成させ、他方の面
にエチレン−ビニルアルコール共重合体層を３０μ厚と
なるように形成させ、３層構造の積層体を得た。該積層
体の１２ｃｍ×１６ｃｍの小片を２枚用意し、エチレン
−ビニルアルコール共重合体層面を合わせて、樹脂製と
り出し口をはさみ、小片の周囲を加熱圧着することによ
り、二重構造エアゾール缶用内装袋を調製した。該袋内
に水を７０ｍｌ充填し、エアゾール缶内に該袋をセット
し、ＬＰＧを前記袋の外で前記缶内に充填し、エアゾー
ル缶を製造した。なお、エアゾール缶の空間容積は３８
０ｍｌであり、内装袋の内容積は１００ｍｌであった。
このエアゾール缶を所定条件にて所定時間放置した後
の、エアゾール缶内の内装袋へのＬＰＧの侵入量を測定
し、その結果を表１に示した。EXAMPLES Example 1 A polyethylene terephthalate layer was formed on one side of a 9 μm thick aluminum foil to a thickness of 12 μm, and an ethylene-vinyl alcohol copolymer layer was formed on the other side to a thickness of 30 μm. Thus, a laminate having a three-layer structure was obtained. A double-structured aerosol can was prepared by preparing two small pieces of 12 cm x 16 cm of the laminate, aligning the surfaces of the ethylene-vinyl alcohol copolymer layers, sandwiching a resin outlet, and heat-pressing the periphery of the small pieces. An interior bag was prepared. The bag was filled with 70 ml of water, the bag was set in an aerosol can, and LPG was filled in the can outside the bag to produce an aerosol can. The space volume of the aerosol can is 38
0 ml, and the inner volume of the inner bag was 100 ml.
After the aerosol can was allowed to stand for a predetermined time under a predetermined condition, the amount of LPG penetrating into the interior bag in the aerosol can was measured, and the results are shown in Table 1.
【００２３】＜実施例２，比較例１＞ 積層体の構成素材を表１に示す以外は実施例１と同様な
操作を行い、積層体を得、二重構造エアゾール缶用内装
袋を得た。実施例１と同様にして、ＬＰＧの侵入の程度
を測定した。 結果を、表１に示す。 Example 2, Comparative Example 1 The same operation as in Example 1 was performed except that the constituent materials of the laminate were as shown in Table 1, to obtain a laminate, and an inner bag for a double structure aerosol can was obtained. . In the same manner as in Example 1, the degree of intrusion of LPG was measured. Table 1 shows the results.
【００２４】＜比較例２＞ 積層体の構成素材を表１に示す以外は実施例１と同様な
操作を行い、積層体を得、二重構造エアゾール缶用内装
袋を得た。実施例１と同様にして、ＬＰＧの侵入の程度
を測定した。 結果を、表１に示す。Comparative Example 2 The same operation as in Example 1 was performed except that the constituent materials of the laminate were as shown in Table 1, to obtain a laminate, and an inner bag for a double structure aerosol can was obtained. In the same manner as in Example 1, the degree of intrusion of LPG was measured. Table 1 shows the results.
【００２５】＜実施例３＞ 積層体の構成素材を表１に示す以外は実施例１と同様な
操作を行い、積層体を得、二重構造エアゾール缶用内装
袋を得た。該内装袋に１０％エタノール水溶液を充填す
る以外は実施例１と同様にして、ＬＰＧの侵入の程度を
測定した。結果を、表１に示す。 Example 3 The same operation as in Example 1 was performed except that the constituent materials of the laminate were as shown in Table 1, to obtain a laminate, and an inner bag for a double-structured aerosol can was obtained. The degree of penetration of LPG was measured in the same manner as in Example 1 except that the interior bag was filled with a 10% aqueous ethanol solution. Table 1 shows the results.
【００２６】＜比較例３＞ 積層体の構成素材を表１に示す以外は実施例１と同様な
操作を行い、積層体を得、二重構造エアゾール缶用内装
袋を得た。該内装袋に１０％グリセリン水溶液を充填す
る以外は実施例１と同様にして、ＬＰＧの侵入の程度を
測定した。結果を、表１に示す。 Comparative Example 3 The same operation as in Example 1 was performed except that the constituent materials of the laminate were as shown in Table 1, to obtain a laminate, and an inner bag for a double-structured aerosol can was obtained. Except for filling the inner bag with a 10% aqueous glycerin solution, the degree of LPG penetration was measured in the same manner as in Example 1. Table 1 shows the results.
【００２７】＜実施例４＞ 積層体の構成素材を表１に示す以外は実施例１と同様な
操作を行い、積層体を得、二重構造エアゾール缶用内装
袋を得た。該内装袋に水性整髪剤を充填する以外は実施
例１と同様にして、ＬＰＧの侵入の程度を測定した。結
果を、表１に示す。 Example 4 The same operation as in Example 1 was performed except that the constituent materials of the laminate were as shown in Table 1, to obtain a laminate, and an inner bag for a double-structured aerosol can was obtained. The degree of LPG penetration was measured in the same manner as in Example 1 except that the interior bag was filled with an aqueous hairdressing agent. Table 1 shows the results.
【００２８】 ＊「ＰＥＴ」は、ポリエチレンテレフタレート（12μ
厚）を示す。 「ＡＬ」は、アルミニウム（9 μ厚）を示す。 「ＮＬ」は、ナイロン１２（商品名「ダイアミド」30μ
厚）を示す。 「ＥＶＯＨ」は、エチレン−ビニルアルコール共重合体
（商品名「ヒートシーラブルエバールＸＥＦ−０１０」
30μ厚）を示す。 「ＰＡＮ」は、ポリアクリロニトリル系重合体（商品名
「ハイトロンＢＸ」30μ厚）を示す。 「ＣＰＰ」は、無延伸ポリプロピレン（30μ厚）を示
す。[0028] * “PET” is polyethylene terephthalate (12μ)
Thickness). “AL” indicates aluminum (9 μ thickness). "NL" is nylon 12 (trade name "Dyamide" 30μ)
Thickness). “EVOH” is an ethylene-vinyl alcohol copolymer (trade name “Heat Sealable Eval XEF-010”)
30 μm). “PAN” indicates a polyacrylonitrile-based polymer (trade name “Hytron BX” 30 μ thickness). “CPP” indicates unstretched polypropylene (30 μ thickness).
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ６５Ｄ 83/58 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification number Agency reference number FI Technical display location B65D 83/58
Claims (4)
耐熱性の熱可塑性樹脂、内層としてヒートシール性樹脂
からなる少なくとも３層構造の積層体から構成される二
重構造エアゾール缶用内装袋において、該ヒートシール
性層が、エチレン−ビニルアルコール系共重合体または
ポリアクリロニトリル系重合体であることを特徴とする
二重構造エアゾール缶用内装袋。An inner bag for a double-structured aerosol can, comprising a laminate having at least a three-layer structure comprising aluminum as an intermediate layer, a heat-resistant thermoplastic resin as an outer layer, and a heat-sealable resin as an inner layer. An interior bag for a double-structured aerosol can, wherein the sealing layer is an ethylene-vinyl alcohol-based copolymer or a polyacrylonitrile-based polymer.
トリルによって形成される請求項１記載の二重構造エア
ゾール缶用内装袋。2. The inner bag according to claim 1, wherein the heat-sealing layer is formed of polyacrylonitrile.
ルあるいはポリアミドである請求項１または２記載の二
重構造エアゾール缶用内装袋。3. The inner bag for a double-structured aerosol can according to claim 1, wherein the heat-resistant thermoplastic resin is polyester or polyamide.
備えている請求項１ないし３のいずれか１項記載の二重
構造エアゾール缶用内装袋。4. The interior bag for a double structure aerosol can according to any one of claims 1 to 3, wherein the laminated body is provided with an outlet for taking out stored items in the bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4310110A JP2665476B2 (en) | 1992-11-19 | 1992-11-19 | Interior bag for double structure aerosol cans |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4310110A JP2665476B2 (en) | 1992-11-19 | 1992-11-19 | Interior bag for double structure aerosol cans |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06156555A JPH06156555A (en) | 1994-06-03 |
| JP2665476B2 true JP2665476B2 (en) | 1997-10-22 |
Family
ID=18001302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4310110A Expired - Fee Related JP2665476B2 (en) | 1992-11-19 | 1992-11-19 | Interior bag for double structure aerosol cans |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2665476B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002240873A (en) * | 2001-12-25 | 2002-08-28 | Hoyu Co Ltd | Aerosol container and two-agent discharge container |
| JP4332444B2 (en) * | 2004-02-17 | 2009-09-16 | 東洋製罐株式会社 | Double structure aerosol can container for hair dye and interior pouch housed in aerosol can container |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03176390A (en) * | 1989-11-30 | 1991-07-31 | Takeuchi Press Ind Co Ltd | Barrier pack in double wall aerosol container |
-
1992
- 1992-11-19 JP JP4310110A patent/JP2665476B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03176390A (en) * | 1989-11-30 | 1991-07-31 | Takeuchi Press Ind Co Ltd | Barrier pack in double wall aerosol container |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06156555A (en) | 1994-06-03 |
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