EP0486630B1 - Verfahren zum Herstellen einer Ventileinheit, Ventileinheit, Druckgaspackung mit einer Ventileinheit sowie Verfahren zur Montage und Füllung einer Druckgaspackung - Google Patents

Verfahren zum Herstellen einer Ventileinheit, Ventileinheit, Druckgaspackung mit einer Ventileinheit sowie Verfahren zur Montage und Füllung einer Druckgaspackung Download PDF

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Publication number
EP0486630B1
EP0486630B1 EP91909259A EP91909259A EP0486630B1 EP 0486630 B1 EP0486630 B1 EP 0486630B1 EP 91909259 A EP91909259 A EP 91909259A EP 91909259 A EP91909259 A EP 91909259A EP 0486630 B1 EP0486630 B1 EP 0486630B1
Authority
EP
European Patent Office
Prior art keywords
valve
filling bag
compressed gas
filling
region
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 - Lifetime
Application number
EP91909259A
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German (de)
English (en)
French (fr)
Other versions
EP0486630A1 (de
Inventor
Hans Erich Maier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hirsch Rolf Dr
Original Assignee
Hirsch Rolf Dr
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 Hirsch Rolf Dr filed Critical Hirsch Rolf Dr
Publication of EP0486630A1 publication Critical patent/EP0486630A1/de
Application granted granted Critical
Publication of EP0486630B1 publication Critical patent/EP0486630B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 invention relates to a method for producing a valve unit, the valve unit, a pressurized gas pack comprising the valve unit and a method for assembling and filling the pressurized gas pack, according to the preambles of claims 1, 2, 7 and 8.
  • Compressed gas packs which are often referred to as aerosol containers, are known in which the filling material and the pressure medium are mixed with one another, dissolved in one another and / or dispersed. After actuating the valve, the filling material and the pressure medium emerge together.
  • pressurized gas packs as so-called two-chamber spray systems in order to prevent the contents from coming into contact with the pressurized gas container and / or with the pressurized medium.
  • two-chamber spray systems in order to prevent the contents from coming into contact with the pressurized gas container and / or with the pressurized medium.
  • a metal or glass housing is used as the outer container, as has been used as an aerosol container for decades for filling goods as personal care products, hair care products, insecticides, impregnation sprays and technical aerosols etc.
  • the inner containers which are used to hold the filling material to be dispensed, are filling bags made of flexible material, e.g. thermoplastic or aluminum.
  • the filling bag which is under the excess pressure of the pressure medium, is compressed when the pressure is released, the filling material then being conveyed out of the valve opening of the compressed gas pack by actuating a valve in spray form, as a foam or paste strand.
  • compressed gases such as preferably environmentally compatible compressed air, are used as pressure medium, as are gases condensing under pressure.
  • the filling process takes place in such a way that the filling material is first filled into the empty filling bag previously placed in the pressure gas or pressure medium container, until the filling bag is returned to its original shape and filled with the filling material.
  • valve is put on and the rim of the plate is permanently connected to the pressurized gas container together with the brim-shaped mouth of the filling bag by clinching or crimping.
  • Air bubbles, enclosed in pasty filling material, are quite annoying because they relax spontaneously when the filling material is discharged, which can cause the strand of filling to burst open.
  • the conventional method is particularly complex because the initially unpressurized, closed pressure pack has to be sealed in the region of the second opening mentioned above in order to be subjected to an overpressure inside between the filling bag and the container wall.
  • the desired excess pressure is then generated through this opening with a pressure-increasing medium, such as compressed air or another compressed gas.
  • a pressure-increasing medium such as compressed air or another compressed gas.
  • the opening must be sealed with a plug, as explained above.
  • EP-A-0 179 538 describes a method for producing a valve unit in which, before the valve unit is introduced into an outer housing, a filling bag with its mouth region is brought into firm and sealing contact with the lower surface of a valve plate.
  • the filling bag has a flange surrounding its mouth, the surface of which is brought into contact with the lower surface of the valve disk.
  • the invention has for its object to provide a method for producing a valve unit, which leads to a sealing and adhering system between the underside of the valve plate and the mouth area of the filling bag with fewer components and with a much lower assembly effort.
  • the interior of the filling bag is evacuated by opening the valve element connected to negative pressure, the inner surface of a constriction formed below the mouth region of the filling bag coming into contact with the outer surface of the valve housing.
  • a sealing and adhering system between the underside of the valve plate and the mouth area of the filling bag is thus achieved without further components solely by the fact that the filling bag with its shape in the mouth area adapted to the configuration of the underside of the valve plate firmly evacuates the filling bag against the underside of the valve plate is pressed.
  • a secure positioning of the opening of the filling bag on the underside of the valve plate is achieved in that the filling bag orients itself with respect to the valve disk during the evacuation process due to the interaction between its constriction and the outer surface of the valve housing.
  • the valve unit produced in this way can be stored as such and, if necessary, inserted into a compressed gas pack.
  • the contours in the region of its mouth are adapted to those of the adhesive surface, so that the filling bag is contracted during evacuation, which is also a pneumatic fastening process, and fixed to the adhesive surface.
  • Secure adhesion is achieved in that the shape of the elastic, flexible filling bag, which is to be connected to the adhesive surface by applying a negative pressure, is adapted to the contour of the adhesive surface in the region of the mouth. Due to the configuration of the constriction, the filling bag is oriented with respect to the orientation with respect to the adhesive surface. In addition, this constriction ensures that the mouth region of the filling bag adheres securely to the adhesive surface when it is evacuated. If this possibility for supporting the filling bag on the valve housing was missing, it could occur comparatively frequently that the filling bag contracts in its mouth area when it is evacuated, as a result of which the sealing adhesion of the mouth area of the filling bag to the adhesive surface could be lost.
  • the filling bag By designing the filling bag with longitudinal grooves that are arranged underneath the constriction and that protrude inward and / or bulges that protrude outward, the filling bag becomes due to its nature and shape contracted at the moment of pneumatic fastening and oriented and fixed on the adhesive surface with respect to the shape and orientation according to a predetermined pattern.
  • valve unit the object on which the invention is based is achieved by the features specified in claim 2; here the already mentioned adhesive surface is formed on the plate edge of a seat valve for compressed gas packs.
  • the flexible plastic container - hereinafter referred to simply as a filling bag for the sake of simplicity - is first lightly pressed onto the underside of the valve plate rim.
  • a hollow needle By depressing the spring socket of the valve against the spring force, an open connection between the surroundings and the interior of the elastic filling bag pressed against the corresponding adhesive surface is created by means of a hollow needle, and through this the air contained in the filling bag is evacuated.
  • the combination of valve and filling bag can be viewed as a unit.
  • the valve unit according to the invention consisting of the valve and the elastic filling bag pneumatically attached to it, can be preassembled, stored, transported and manually or mechanically inserted into the mouth of an empty compressed gas container and in a known manner with correspondingly changed values to be permanently connected to it by clinching or crimping. Thanks to the contracted volume and cross-section significantly reduced shape, the valve unit with the filling bag attached to the valve plate can be easily inserted manually or mechanically through the opening of the empty compressed gas pack and then clipped with the same on its rolled edge. Through the formation of the constriction, the filling bag can be precisely aligned and oriented with respect to the valve plate during the evacuation.
  • the filling bag is designed in its shape and profile by bulges and / or by longitudinal grooves so that in the pneumatic fastening process by the negative pressure is an elongated and perpendicular to the axis of the adhesive surface alignment and the bag into a multi-pointed star-shaped strand, a flattened, slightly curved, elongated bladder or another shape that can be predetermined by the shape of the filling bag.
  • the cross section of the filling bag is significantly reduced; the filling bag attached to the valve is formed, for example, when three or more longitudinal grooves are made in the fuselage area as a straight, multi-point star-shaped strand which is oriented perpendicular to the valve disk.
  • the filling bag deforms after applying the negative pressure to an elongated, slightly curved, flattened bladder that can be easily wound together.
  • valve unit designed as a one-piece component considerably simplifies the assembly of the compressed gas pack according to the invention.
  • the object underlying the invention is achieved according to the invention by the features specified in claim 8. Due to the increase in volume of the filling bag filled in the filled pressure gas container, an excess pressure is generated in the space between the inner wall of the pressure gas container and the now extended filling bag, without such an excess pressure, as described in connection with the conventional so-called two-chamber method, by an additional one Opening in the compressed gas container only afterwards should be built.
  • the filling material does not come into contact with the inner wall of the container and can be metered into the filling bag in the pressurized gas container in the absence of air.
  • the procedure proposed according to claim 9 can be used to prevent the filling bag inside the compressed gas container from being subjected to external stresses such as e.g. can occur during transport and handling, can be damaged by striking the inner wall of the compressed gas container.
  • the overpressure available for expelling the filling material is increased by largely filling the interior of the compressed gas container through the filling bag.
  • the molecular structure and physical properties, in particular the permeability can be improved by stretching the flexible, preferably thermoplastic material of the filling bag.
  • diffusion such as occurred over time in known unstretched filling bags, no longer takes place. Due to the expansion of the bag during filling with the filling material, the latter is brought into contact with the bottom of the compressed gas container and / or with its inner wall, which also results in a firmly anchored seat of the filling bag in the compressed gas container.
  • the valve unit 4 shown in FIG. 1, designed as an aerosol valve, has a valve plate 3, a valve element 9 designed as a spring socket, a valve housing 8, which is connected to the valve plate 3 by crimping and in which the spring socket 9 is received, and one Filling bag 2.
  • the filling bag 2 is not yet attached to the valve plate 3.
  • the filling bag 2 consists of a flexible plastic material, preferably of polyethylene, is of the basic shape forth approximately cylindrical and has a convex downwardly curved base region 20 and an adjoining fuselage 19. Above the fuselage 19, a constriction 13 is formed which merges into the fuselage 19 in an extension region 18.
  • the constriction 13 merges into an expanding mouth region 1;
  • the mouth region 1 has, following the constriction 13, initially a radially widening subsection 21, an adjoining, approximately cylindrical middle section 24 and a circumferential and trough-shaped brim 5 adjoining the middle section 24 at the top 19 of the filling bag 2 are formed inward indented longitudinal grooves 14, which extend into the bottom region 20 of the filling bag, and outwardly protruding bulges 22, which extend into the extension region 18 of the filling bag 2.
  • the valve plate 3 is trough-shaped at its plate edge 6.
  • the shape of the lower surface 15 of the valve plate 3 corresponds to the brim 5 of the filling bag 2.
  • a circular sealing lip (not shown) can be arranged at the apex of the brim 5 or at the corresponding location on the lower surface 15 of the trough-shaped plate rim 6, .
  • the filling bag 2 is positioned with respect to the valve plate 3 so that the brim 5 of the filling bag 2 comes into contact with the trough-shaped lower surface 15 of the valve plate 3, possibly with the interposition of the sealing lip mentioned above. With this positioning of the filling bag 2, the inner surface of the constriction 13 of the filling bag 2 comes close to or even in contact with the outer surface of the valve housing 8.
  • the spring socket 9 is now pressed into the valve housing 8 by means of a hollow needle 7; A vacuum is applied to the valve housing 8 from the outside, whereupon the interior 17 of the filling bag 2 is evacuated.
  • the mouth area 1 of the filling bag 2 adheres firmly to the lower surface 15 of the valve plate 3, the brim 5 and the approximately cylindrical central section 24 of the mouth area 1 being pressed firmly against the lower surface 15 of the valve plate 3 due to the effect of the negative pressure.
  • the inner surface of the constriction 13 also comes into firm contact with the outer surface of the valve housing 8, which results in the evacuated filling bag 2 being positioned approximately perpendicular to the valve disk 3. Due to its design with the four longitudinal grooves 14 and the four bulges 22, the cross-sectional shape of the filling bag 2 in the exemplary embodiment shown assumes the shape shown in FIG. 2 below after the evacuation.
  • the filling bag 2 By appropriately shaping the filling bag 2, it can assume any desired shape after the evacuation.
  • the hollow needle 7 After evacuation, i.e. After the interior 17 of the filling bag 2 has been vented, the hollow needle 7 is withdrawn. Due to the spring tension of the spring socket 9, the valve housing 8 is closed automatically. The filling bag 2 adheres firmly with its mouth region 1 to the lower surface 15 of the valve plate 3. A separation is only possible with an enormous pulling force and is therefore very unlikely.
  • valve or valve-bag unit 4 shown in FIG. 2 is thus produced after the evacuation. This can be stored, transported and further handled as a single component.
  • valve-bag unit For installation in a pressurized gas pack, the valve-bag unit is inserted through the opening 16 in an end face of a cylindrical pressurized gas container 10 into the interior of the pressurized gas container 10.
  • the compressed gas container 10 is formed with a rolled edge 11 at the edge region bordering the opening 16. This rolled edge 11 is of its shape ago formed so that it lies flat against the trough designed by the brim 5 or the plate rim 6.
  • an O-ring seal 12 can be inserted at the top of the trough.
  • valve-bag unit 4 After the valve-bag unit 4 has been inserted into the compressed gas container 10, the latter is filled with the compressed gas.
  • the valve-bag unit 4 is raised slightly from the position shown in FIG. 3 with respect to the compressed gas container 10.
  • a space is formed between the outside of the mouth region 1 of the evacuated filling bag 2 adhering to the lower surface 15 of the valve plate 3 and the rolled edge 11 of the compressed gas container 10 surrounding the opening 16.
  • the interior 23 of the compressed gas container 10 is filled with the compressed gas.
  • the valve-bag element 4 is held magnetically, pneumatically and / or mechanically in the position forming the intermediate space.
  • the filling of the compressed gas container 10 with compressed gas is continued until the entire interior 23 of the compressed gas container 10 surrounding the evacuated filling bag 2 is filled with compressed gas.
  • the valve-bag unit 4 is then inserted completely into the compressed gas container 10.
  • the mouth area 1 of the filling bag 2 connected to the valve plate 3 with the brim 5 lies on the rolled edge 11 of the compressed gas container 10.
  • the plate edge 6 of the valve plate 3 is clinched with the rolled edge 11 of the compressed gas container 10.
  • the one inserted between the brim 5 and the rolled edge 11 is inserted An O-ring seal between the underside of the brim and the rolled edge 11.
  • the pressure gas container 10 is filled with pressure medium or gas under a defined overpressure, which can be done by using an overpressure filling head known per se, this defined overpressure is maintained until the valve-bag unit 4 with the evacuated filling bag 2 has been attached or clinched on the compressed gas container 10 in the manner described above. As a result, a defined excess pressure can be presented in the interior 23 of the compressed gas container 10.
  • the overpressure in the interior of the compressed gas container 10 increases by this overpressure in excess of the overpressure generated by the introduction of the liquid or pasty filling material and by the overexpansion of the filling bag.
  • valve-bag unit 4 After the valve-bag unit 4 has been clinched on the pressurized gas container 10 and, if appropriate, after removal of the excess pressure filling head used to create a defined excess pressure, the spring socket 9 accommodated in the valve housing 8 is opened, after which the excess material, which is a Gas, a liquid or pasty good can act, for example by means of a liquid gas filling head known per se, into the previously empty or evacuated filling bag 2. The previously contracted filling bag 2 unfolds until it has returned to its original shape.
  • excess material which is a Gas, a liquid or pasty good
  • the filling bag 2 is overstretched with the gaseous, liquid or pasty filling material beyond the original shape of the filling bag 2.
  • the filling or overstretching of the filling bag 2 is continued until the outer surface of the filling bag largely lies against the inner surface of the compressed gas container 10.

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)
  • Packages (AREA)
  • Vacuum Packaging (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Check Valves (AREA)
EP91909259A 1990-06-09 1991-05-08 Verfahren zum Herstellen einer Ventileinheit, Ventileinheit, Druckgaspackung mit einer Ventileinheit sowie Verfahren zur Montage und Füllung einer Druckgaspackung Expired - Lifetime EP0486630B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4018528 1990-06-09
DE4018528A DE4018528A1 (de) 1990-06-09 1990-06-09 Behaeltnis aus flexiblem kunststoff zur befestigung an einer starren haftflaeche und verfahren zur befestigung des behaeltnisses an einer starren haftflaeche
PCT/EP1991/000860 WO1991019653A1 (de) 1990-06-09 1991-05-08 Behältnis aus flexiblem kunststoff zur befestigung an einer starren haftfläche und verfahren zur befestigung des behältnisses an einer starren haftfläche

Publications (2)

Publication Number Publication Date
EP0486630A1 EP0486630A1 (de) 1992-05-27
EP0486630B1 true EP0486630B1 (de) 1995-07-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91909259A Expired - Lifetime EP0486630B1 (de) 1990-06-09 1991-05-08 Verfahren zum Herstellen einer Ventileinheit, Ventileinheit, Druckgaspackung mit einer Ventileinheit sowie Verfahren zur Montage und Füllung einer Druckgaspackung

Country Status (9)

Country Link
US (1) US5265765A (ja)
EP (1) EP0486630B1 (ja)
JP (1) JPH06502829A (ja)
AT (1) ATE124662T1 (ja)
CA (1) CA2059660A1 (ja)
DE (4) DE9006547U1 (ja)
DK (1) DK0486630T3 (ja)
ES (1) ES2077228T3 (ja)
WO (1) WO1991019653A1 (ja)

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JP3965236B2 (ja) * 1997-12-10 2007-08-29 東洋エアゾール工業株式会社 二重エアゾール容器及びその製造方法
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JP5190163B2 (ja) * 2001-03-07 2013-04-24 株式会社ダイゾー 二重エアゾール製品の製造方法およびその製造方法によって製造される二重エアゾール製品
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WO2010048465A1 (en) * 2008-10-23 2010-04-29 The Procter & Gamble Company Valve and dispenser comprising same
KR101004628B1 (ko) * 2010-02-05 2011-01-03 정해룡 디스펜서
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US8690003B2 (en) 2010-09-13 2014-04-08 Black & Decker Inc. Gas cartridge
KR101258142B1 (ko) * 2011-06-30 2013-04-25 (주)연우 내용물의 리필이 가능한 지관용기
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Also Published As

Publication number Publication date
DE9007315U1 (de) 1991-10-10
CA2059660A1 (en) 1991-12-10
WO1991019653A1 (de) 1991-12-26
EP0486630A1 (de) 1992-05-27
DE4018528A1 (de) 1991-12-12
ES2077228T3 (es) 1995-11-16
DE59105925D1 (de) 1995-08-10
US5265765A (en) 1993-11-30
ATE124662T1 (de) 1995-07-15
JPH06502829A (ja) 1994-03-31
DK0486630T3 (da) 1995-11-20
DE9006547U1 (de) 1991-10-02

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