WO2002062679A1 - Procede de production de bombes a aerosol avec contenant interieur, contenant interieur et bombe a aerosol - Google Patents

Procede de production de bombes a aerosol avec contenant interieur, contenant interieur et bombe a aerosol Download PDF

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Publication number
WO2002062679A1
WO2002062679A1 PCT/CH2002/000078 CH0200078W WO02062679A1 WO 2002062679 A1 WO2002062679 A1 WO 2002062679A1 CH 0200078 W CH0200078 W CH 0200078W WO 02062679 A1 WO02062679 A1 WO 02062679A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner container
valve body
container
adhesive
outer container
Prior art date
Application number
PCT/CH2002/000078
Other languages
German (de)
English (en)
Other versions
WO2002062679A9 (fr
Inventor
Hans F. Stoffel
Original Assignee
Stoffel Hans F
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stoffel Hans F filed Critical Stoffel Hans F
Publication of WO2002062679A1 publication Critical patent/WO2002062679A1/fr
Publication of WO2002062679A9 publication Critical patent/WO2002062679A9/fr

Links

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 or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/60—Contents and propellant separated
    • B65D83/62—Contents and propellant separated by membrane, bag, or the like

Definitions

  • the present invention relates to a method for
  • Such spray cans generally have a relatively rigid outer container and a flexible inner container located therein, often in the form of a laminate bag.
  • the inner container is filled with the spray medium via a valve body, which fills the opening on the top of the outer container and is connected to it. releases this via the valve body as required.
  • a method for producing such a spray can is known for example from WO 90/10583.
  • a dispensing valve is attached to a flexible inner container, which is integrated in a valve body.
  • the valve body with the inner container attached to it is inserted into the outer container of the spray can and is gas-tightly connected to it by crimping the edges of both the outer container opening and the valve body.
  • the inner container is then filled with liquid or pasty spray medium and the interior between the outer container and inner container filled with propellant gas.
  • the big problem with this method is that the propellant gas can escape to the outside at the connection between the inner container and the dispensing valve, in particular if compressed air under high pressure is used as the propellant gas.
  • a sealing compound conventionally often with a low-viscosity synthetic resin.
  • the outer container is first filled with the liquid synthetic resin in a predetermined amount via its opening, then the inner container with the valve body is inserted, which is then connected to the outer container. This is conventionally done in the standing position of the outer container, ie with the opening of the outer container facing upwards.
  • the sprayed material is filled into the inner container and the propellant gas into the space between the inner container and the outer container and the can is then turned upside down by approx. 180 °.
  • the still liquid synthetic resin flows from the bottom of the outer container into the area of the opening of the latter, which is now closed by the valve body with the inner container attached to it.
  • the synthetic resin thus reaches the area of the connection between the inner container and the valve body and seals it. After the curing time of the synthetic resin, which can take from one to several hours, this seal is completed and the can is ready for use.
  • a disadvantage of this procedure is that there is a risk that the inner container will at least partially come into contact with the inside of the outer container before the can is turned over and will be glued to it by the synthetic resin flowing downward along the inside of the outer container. As a result, the inner bag cannot be completely emptied and part of the spray medium cannot be used. If so-called stand-up pouches or bottom-up pouches are to be used as inner containers, there is also the risk that the bottom area of these inner containers will completely nestle against the inside of the outer container after being filled with the spraying agent and thus practically completely or at least drain the synthetic resin after twisting the can prevented to a significant extent. As a result, no reliable sealing of the inner container and the valve body is achieved and the problem described at the outset is not eliminated.
  • the object of the present invention was to find a method for producing such spray cans which eliminates the disadvantages described and also allows the use of propellant gases under high pressure.
  • the object is further achieved by means of an inner container according to claim 9 and a spray can according to claim 10.
  • Liquid gas can thus advantageously also be used as a blowing agent, because it can no longer influence the hardening process of the seal, since this is already complete at this point in time. A considerable saving in sealant can also be achieved.
  • a major advantage is also to be seen in the fact that, due to the fact that the sealing point is accessible from the outside, a fast-curing sealant or adhesive can be used, preferably based on two components.
  • a fast-curing sealant or adhesive can be used, preferably based on two components.
  • UV-curing adhesive or Sealants can drastically reduce the curing process compared to the conventional process with thin, self-curing sealants, which means that much shorter production times for such spray cans can be achieved.
  • the cans preassembled in this way and advantageously already fumigated can also be stored temporarily and / or transported, for example, to another operating site until they are filled with the spraying agent in due course.
  • Rolled-up laminate bags are preferably used as inner containers and are fixed in this rolled state by a connecting means.
  • the connecting means preferably adhesive tapes with a predetermined breaking point or a comparatively low tear load, keep the laminate bag fixed in this compact state until they tear through the filling process with the spray material and thus allow the inner container to expand.
  • So-called stand-up pouches can preferably be used in this method without the risk that they could prevent the sealant from flowing to the inside of the valve body.
  • the collar in the area of the connection to the valve body preferably has a weld seam that extends over a certain distance and runs parallel to the valve axis. This distance is preferably between about 5 - 15 mm, in a particularly preferred manner this distance is 3 - 6 mm, after which the weld seam is then vertical or is formed obliquely outwards to the edge of the inner container.
  • the capillary action. the creep effect increases, which the sealing or. Allows adhesive to flow from the valve body to the collar of the inner container, thus creating a diffusion-proof seal between the inside of the outer container and the inner container, ie between the propellant gas and the spray medium.
  • liquid gas can also advantageously be used by the process according to the invention.
  • This has the advantage that practically a constant pressure is provided from the fully filled state to proper emptying and thus a much lower initial pressure can be used compared to gas or air. Furthermore, sticking of the inner container to the inside of the outer container is completely ruled out, since there are no effective adhesives in the room at the time of inserting or unfolding the inner container.
  • spray cans can be pre-gassed before being filled with spraying agent and then transported, for example, to another plant and / or stored temporarily.
  • FIG.l schematically in cross section an embodiment of a valve body with a rolled inner container which according to the invention has been connected to the inner container before insertion into the outer container;
  • FIG. 2 schematically shows the view of the area of the valve body as in FIG. 1 with the inner container in the original form before rolling in;
  • FIG 3 shows the schematic cross section through a fully assembled can before filling with the spray medium.
  • FIG. 1 the cross section through the upper region of an inner container 5 preassembled according to the invention with the valve body 6 attached is shown schematically - in an overhead position.
  • the valve body 6 acting as a valve carrier has, for example, the dispensing valve 9 in the center of its ring 7 (flanged edge).
  • the dispensing valve 9 is preferably surrounded by a conical jacket-shaped holder of the valve body 6 and connected to it in the radial direction on the inside.
  • On a riser pipe holder 10 - jacket of the discharge valve 9 - the collar 5 1 of the inner container 5 is attached or. pushed on and connected via the weld 11.
  • the weld seam 11 of the inner container 5 (see also FIG. 2) runs in the region of the collar 5 1 a small distance parallel to the riser pipe holder 10 before it runs radially or preferably obliquely away from the riser pipe holder 10 to the edge of the inner container 5.
  • the sealing or Adhesive 4 can preferably be introduced in the upside-down position of the inner container 5, that is to say with the valve body 6 pointing downward, into the space 12 formed by the conical configuration, the collar 5 'of the inner container 5 thereby also covering at least part of its length and a reliable seal can be achieved. Due to the capillary action between the collar 5 'of the inner container 5 and the riser holder 10, the sealing or. Adhesive 4 drawn into the contacting areas in this area, which makes the particularly reliable Sealing along this critical area is achieved.
  • a sealing or Adhesive can be used a fast curing medium, such as preferably a two-component epoxy resin or a UV curing sealant. Adhesive material because the application is accessible from the outside.
  • the curing of the sealing or Adhesive 4 can additionally be supported and in particular accelerated by the action of heat or UV light at this point. This is also favored by the easy accessibility.
  • conventional inner containers 5 in the form of laminate bags with a straight upper edge and a straight weld seam 11 can also be used, as is shown schematically in FIG. 2 in the view.
  • the sealing or Adhesive 4 are applied from the outside to the appropriate place, which can also be achieved easily and quickly by machine due to the good accessibility.
  • the inner container 5 prepared in this way - as shown in FIG. 1 - can now be introduced from above through the opening 2 of the outer container 1, as shown in FIG. 3.
  • the rim 7 (flanged edge) provided with a circumferential groove of the plate-shaped valve body 6 acting as a valve carrier is placed on the rim 3 (flanged edge) of the outer container 1 and in connected in a known manner, such as crimped, preferably after the propellant has been introduced into the interior of the outer container 1.
  • a sealing ring can be inserted between the ring 7 (flange edge of the valve body 6) and the ring 3 (flange edge of the outer container 1).
  • a hot-melt adhesive, an adhesive, a two-component adhesive or the like can be applied to the surfaces of the rings 3 and 7, which reacts after the valve body 6 and the outer container 1 have been connected, for example by the action of heat and in a short time as a tight one Adhesion can harden.
  • the inner container 5 is preferably parallel to the spray axis, optionally rolled up around a riser pipe, and fixed in this form, for example, by means of adhesive strips 8 (FIG. 1). This prevents the inner container 5 from touching the inner wall of the outer container 1.
  • the inner container 5 can now be mounted on the outer container 1 without first turning the outer container 1 and waiting for one The curing time can be filled directly with the spray medium.
  • the process can also be interrupted here, and the spray can prepared in this way can be temporarily stored and / or transported in order to be filled at a later point in time and, if necessary, in another operating facility.
  • the inner container 5 By filling the inner container 5 with liquid or pasty spray material, the inner container 5 is expanded, causing the adhesive strips 8 to tear. These either have a relatively low tensile strength or have predetermined breaking points dimensioned accordingly. Since there is no adhesive sealant or adhesive 4 (FIGS. 1 and 3) in the interior between the inner wall of the outer housing 1 and the inner container 5, there is absolutely no risk of the inner container 5 sticking to the inside of the outer container 1.
  • standing bags can also advantageously be used as the inner container 5.
  • the method according to the invention allows savings in sealant or adhesive 4 compared to known methods. It is also conceivable to apply a preferably two-component sealant or adhesive 4 to the areas of the valve body 6 / riser pipe holder 10 and inner container 5 which are in contact with one another, at least in regions, before the connection.
  • At least approximately hardened sealant or adhesive 4 is to be understood to mean that the sealant or adhesive 4 is dimensionally stable in this state, has no adhesive properties on the exposed surface, does not undergo chemical reactions with propellant or possibly liquid gas, and tightness is ensured.
  • valve body made of a non-weldable, but gas-tight material, such as polyamide (PA), also called nylon, can be used.
  • PA polyamide
  • the advantage of the invention is that the sealing, respectively.
  • Adhesive (4) which completely surrounds the collar (5 1 ) of the inner container (5) and the exposed part of the riser pipe holder (10), the entire space (12) is completely sealed, so that even when using a non-gas-tight riser pipe holder (10 ) For example, no propellant gas can escape from polyethylene (PE).
  • PE polyethylene
  • Another advantage of the invention is that the space (12) formed by the conical valve body (6) and the riser pipe holder (10) with sealing, respectively. Adhesive (4) is filled, and is therefore completely gas-tight.

Abstract

L'invention concerne un procédé de production de bombes à aérosol avec contenant intérieur (5). Le contenant intérieur (5), à l'état monté, est relié, par l'intermédiaire d'un corps à soupape (6) comportant une soupape de diffusion (9), au contenant extérieur (1). Le contenant intérieur (5) sert au logement de la substance à vaporiser et un gaz propulseur est introduit entre le contenant intérieur (5) et la face intérieure du contenant extérieur (1). Avant l'insertion du contenant intérieur (5) dans le contenant extérieur (1), la zone de liaison entre le contenant intérieur (5) et le corps à soupape (6) est rendue étanche à l'aide d'un agent d'étanchéité ou de collage (4) durcissant. Ainsi, un collage de la face extérieure du contenant intérieur (5) à la face intérieure du contenant extérieur (1), lors de la production de la bombe à aérosol, est empêché de façon fiable et il est garanti que le contenant intérieur (5) puisse se vider correctement. De façon avantageuse, on peut utiliser, comme contenant intérieur (5),un sachet restant en position verticale, et on utilise, comme gaz propulseur, de façon avantageuse, un gaz liquide.
PCT/CH2002/000078 2001-02-08 2002-02-08 Procede de production de bombes a aerosol avec contenant interieur, contenant interieur et bombe a aerosol WO2002062679A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH229/01 2001-02-08
CH2292001 2001-02-08

Publications (2)

Publication Number Publication Date
WO2002062679A1 true WO2002062679A1 (fr) 2002-08-15
WO2002062679A9 WO2002062679A9 (fr) 2002-10-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2895735A1 (fr) * 2005-12-30 2007-07-06 Ecopack France Valve a poche amelioree

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375743A (en) * 1979-01-12 1983-03-08 Corning Glass Works Apparatus for and method of assuring the quality of the results obtained from a blood gas analyzer
JPS5974081A (ja) * 1982-10-20 1984-04-26 東京エアゾル化学株式会社 隔壁式エアゾ−ル容器
US5137179A (en) * 1990-02-15 1992-08-11 Hans Stoffel Containers and methods for preparing and manufacturing the same
CH680849A5 (en) * 1990-05-02 1992-11-30 Aerosol Service Ag Aerosol dispenser for flowable material - has cast sealing compound, for relative sealing of outer container or core, and cover and discharge valve
EP0549096A1 (fr) * 1991-12-27 1993-06-30 Ccl Industries Inc. Ensemble de poches de distribution d'un produit et appareil de distribution comportant un tel ensemble de poches
EP0585908A2 (fr) * 1992-09-01 1994-03-09 Präzisions-Werkzeuge AG Réceptacles avec sachet interne
JPH0789581A (ja) * 1993-06-21 1995-04-04 Koike Kagaku Kk エアゾール容器
EP0763469A1 (fr) * 1992-05-22 1997-03-19 MESHBERG, Philip Doublure insérable pour récipient de distribution à col étroit et procédé de remplissage d'une telle doublure par le syphon tubulaire
EP0972723A2 (fr) * 1998-07-14 2000-01-19 Toyo Aerosol Industry Co., Ltd. Récipient-aérosol à double chambre et son procédé de fabrication
WO2000009416A2 (fr) * 1998-08-12 2000-02-24 Vantico Ag Emballage
US6085945A (en) * 1995-05-09 2000-07-11 Alfons Jozef Ida Fransen Distributer for a product including a pressure bag and a non-return valve
DE20014647U1 (de) * 2000-08-24 2000-12-14 Lindal Gmbh Aerosol Tech Ventilanordnung für Druckspender

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375743A (en) * 1979-01-12 1983-03-08 Corning Glass Works Apparatus for and method of assuring the quality of the results obtained from a blood gas analyzer
JPS5974081A (ja) * 1982-10-20 1984-04-26 東京エアゾル化学株式会社 隔壁式エアゾ−ル容器
US5137179A (en) * 1990-02-15 1992-08-11 Hans Stoffel Containers and methods for preparing and manufacturing the same
CH680849A5 (en) * 1990-05-02 1992-11-30 Aerosol Service Ag Aerosol dispenser for flowable material - has cast sealing compound, for relative sealing of outer container or core, and cover and discharge valve
EP0549096A1 (fr) * 1991-12-27 1993-06-30 Ccl Industries Inc. Ensemble de poches de distribution d'un produit et appareil de distribution comportant un tel ensemble de poches
EP0763469A1 (fr) * 1992-05-22 1997-03-19 MESHBERG, Philip Doublure insérable pour récipient de distribution à col étroit et procédé de remplissage d'une telle doublure par le syphon tubulaire
EP0585908A2 (fr) * 1992-09-01 1994-03-09 Präzisions-Werkzeuge AG Réceptacles avec sachet interne
JPH0789581A (ja) * 1993-06-21 1995-04-04 Koike Kagaku Kk エアゾール容器
US6085945A (en) * 1995-05-09 2000-07-11 Alfons Jozef Ida Fransen Distributer for a product including a pressure bag and a non-return valve
EP0972723A2 (fr) * 1998-07-14 2000-01-19 Toyo Aerosol Industry Co., Ltd. Récipient-aérosol à double chambre et son procédé de fabrication
WO2000009416A2 (fr) * 1998-08-12 2000-02-24 Vantico Ag Emballage
DE20014647U1 (de) * 2000-08-24 2000-12-14 Lindal Gmbh Aerosol Tech Ventilanordnung für Druckspender

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2895735A1 (fr) * 2005-12-30 2007-07-06 Ecopack France Valve a poche amelioree
WO2007077003A1 (fr) * 2005-12-30 2007-07-12 Ecopack France S.A.S. Valve a poche amelioree
CN101356102A (zh) * 2005-12-30 2009-01-28 伊科帕克法国股份有限公司 改进型袋阀
JP2009522173A (ja) * 2005-12-30 2009-06-11 エコパック フランス ソシエテ パル アクスィオン サンプリフィエ 改良されたバッグオンバルブ
AU2006332121B2 (en) * 2005-12-30 2011-12-01 Ecopack France S.A.S. Improved bag valve
US8196620B2 (en) 2005-12-30 2012-06-12 Ecopack France S.A.S. Bag valve

Also Published As

Publication number Publication date
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