EP0547982B1 - Verfahren zur Herstellung eines Sprühdosenkörpers mit einem metallischen Innenbehälter sowie Sprühdosenkörper und entsprechende Sprühdose - Google Patents

Verfahren zur Herstellung eines Sprühdosenkörpers mit einem metallischen Innenbehälter sowie Sprühdosenkörper und entsprechende Sprühdose Download PDF

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Publication number
EP0547982B1
EP0547982B1 EP19920420458 EP92420458A EP0547982B1 EP 0547982 B1 EP0547982 B1 EP 0547982B1 EP 19920420458 EP19920420458 EP 19920420458 EP 92420458 A EP92420458 A EP 92420458A EP 0547982 B1 EP0547982 B1 EP 0547982B1
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EP
European Patent Office
Prior art keywords
pocket
blank
casing
process according
skirt
Prior art date
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Expired - Lifetime
Application number
EP19920420458
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English (en)
French (fr)
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EP0547982A1 (de
Inventor
Jacques Benquet
Pierre Brugerolle
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.)
Albea Tubes France SAS
Original Assignee
Cebal SAS
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Publication of EP0547982A1 publication Critical patent/EP0547982A1/de
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2615—Edge treatment of cans or tins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2615—Edge treatment of cans or tins
    • B21D51/2623—Curling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2615—Edge treatment of cans or tins
    • B21D51/2638—Necking

Definitions

  • the invention relates to a method of manufacturing a flexible metal bag dispenser body according to the preamble of claim 1 as well as the dispenser body according to the preamble of claim 18 and corresponding dispenser.
  • a pocket dispenser is used for cosmetic, pharmaceutical, hygienic or food products.
  • pocket dispensers also called two-chamber aerosols
  • the product to be dispensed is placed in a flexible waterproof pocket provided with a dispensing valve, a pocket which constitutes a barrier between the product to be dispensed and the propellant gas, the bag and the propellant gas being contained in a rigid case, generally metallic, usually made of aluminum or iron or an alloy of these metals.
  • the distributor body is called the distributor before fixing the distribution valve.
  • a pocket dispenser body may be metallic, typically aluminum or aluminum alloy, and not made of plastic, despite the ease of shaping of plastic materials, because this material is already recognized for its qualities and widely used in this type of packaging where its behavior with regard to packaged products is well known.
  • a pocket dispenser comprising a rigid casing with a neck which is little or not constricted, a flexible metal pocket with a neck expanded and a metal dome provided with a valve, these three elements being assembled by rolling the edges of the housing and of the pocket then crimping or swaging the dome.
  • EP-A-0 326052 describes a method of manufacturing a pocket distributor body consisting in particular of a rigid housing and a flexible and crumpled aluminum pocket, in which a pocket blank is assembled. with cylindrical skirt in a case blank with cylindrical skirt in their upper parts to be conified, then these upper parts thus assembled are conified and rolled simultaneously.
  • the distributor body described in EP 326052-A2 has a number of advantages over that described in EP-A1-017147: on the one hand, on the aesthetic level: because its conical and rolled upper part is in continuity with its cylindrical body, the smooth surface obtained being preferred to that of the body with dome set with EP-A1-017147; on the other hand in terms of capacity: in fact, in EP-A1-017147, the flexible pouch is introduced into the rigid case after it has been formed.
  • the flexible bag therefore has an outside diameter which must be less than the diameter of the orifice of the rigid case and, consequently, the capacity of the flexible bag, that is to say the quantity of product to be delivered, is limited, a lot of annular space being unused between the skirt of the case and that of the pocket. This is not the case with the dispenser body described in EP-A-0 326052 for which there is a small dead volume between the skirt of the rigid case and that of the flexible pocket.
  • the Housing bodies manufactured in these tests therefore varied by the degree of conification or constriction rate R of the conified walls.
  • This shrinking rate R can be expressed by the ratio Di / di, Di corresponding to the inside diameter of the cylindrical skirt (not shrunk) and di corresponding to the inside diameter of the most constricted conical part, located at the neck where will be fixed the distribution valve.
  • the present invention makes it possible to solve this problem and therefore to obtain a distributor body with a high shrinkage level, with a neck free of folds, therefore suitable for the sealed assembly of a valve.
  • the method of manufacturing a pocket dispenser body consisting of a rigid external metal case containing a waterproof, flexible and crumpled metal pocket comprises the manufacture of a rigid case blank and the manufacture of 'a flexible blank of said pocket, the sealed assembly of these two blanks by connecting an upper part of the housing blank, of height H, with an upper part of the blank of the pocket, of height H' , so as to form a space for storing a propulsion means between the bottom of the blank of the case and the bottom of the blank of the pocket, and the common shaping of said upper ends by conification and rolling so forming a constricted neck allowing the tight assembly of a valve, and is characterized in that, so as to form a neck with an interior surface free of folds for a constriction rate R of said pocket at least equal to 1.15 and a secure the sealed fixing of the valve, at least a portion of said upper part of the pocket blank has a wall thickness E greater than the average thickness Eo of the wall of the skirt of said blank of said pocket, the additional thickness
  • the invention applies in particular in the case where the dispenser body and more particularly the flexible bag has a significant shrinkage, that is to say when the shrinkage rate R (ratio Di / di between the internal diameter Di of the skirt of the pocket (or of the skirt of the blank), and the internal diameter di of the most constricted part of the wall of the pocket corresponding substantially to the internal diameter of the neck) is high, greater than 1.2 and typically greater than 1.35.
  • R shrinkage rate
  • the problem to be solved by the invention does not arise at all or little when the shrinking rate R is equal to 1 or slightly greater than 1.
  • this rate reaches, and a fortiori exceeds, the value of 1.15, a neck cannot be formed, despite prior adhesive assembly, without having folds on the narrowed wall of the pocket on the inside surface of the neck where the level of shrinkage of the pocket is greatest . These folds make it difficult, if not impossible, to seal a valve tightly.
  • the walls (skirt and upper part) of the housing and the pocket are close and substantially homothetic, in particular in the conical part where they are assembled, the ratio Di / di expressing the level of shrinking R of the pocket substantially also expresses that of the case.
  • the invention also relates to a pocket dispenser body consisting of a rigid external metal case containing a flexible and crumpled waterproof metal pocket having a skirt, the upper parts of said case and of said pocket skirt being linked together. and forming a constriction ending in a neck extending by an externally rolled edge, the constriction ratio R of said pocket being at least equal to 1.15, this body being obtainable by the preceding method, characterized in that said skirt the pocket has, at less than 10 mm from the start of said constriction, a maximum thickness E1 greater than the average thickness Eo of the skirt in its non-constricted part, E1 / Eo being at least equal to 1.15 and the external surface of said collar free of creases.
  • the constricted portion is deformed circumferentially and axially, and the result is typically a thickening which increases towards small diameters.
  • the invention avoids the crumpling of the thin flexible pouch when the shrinkage rate R is high, the most important practical result being the absence of folds on the inside surface of the neck. To this absence of folds is added, to recognize a dispenser body of the invention, the presence of a thickening of the pocket before the shrinking or at the beginning of the shrinking, that is to say in an unaffected area or little affected by the gradual thickening effect linked to shrinking.
  • the interior surface of the skirt shrinkage is also free of creases, as well as the exterior surface of the rolled edge.
  • the maximum thickness E1 of the pocket more or less 10 mm from the neck is preferably such that E1 / Eo is greater than R and at least equal to 1.2. This maximum thickness E1 increases even more with the preferential condition E1 / Eo greater than or equal to R + 0.3, corresponding to the condition "E / Eo greater than or equal to R + 0.3" adopted preferably for the pocket blank.
  • the pocket is made of aluminum or aluminum alloy and typically has a thickness of 0.1 to 0.2 mm.
  • Figure 1 shows schematically, in longitudinal section, the two blanks of the housing (24) and the pocket (34) made mechanically integral by a sealed annular junction (8), before the conformation and rolling phase.
  • Figure 2 shows schematically, in longitudinal section, the manufacture of a blank (34) of the pocket whose skirt (35) has an average thickness Eo and whose end (37) has, over a height H 'a greater thickness at Eo and over most of the height H 'a thickness equal to E.
  • Figure 3 shows schematically, in longitudinal section a blank (34) of the pocket whose end (37) has an extra thickness located on the outer wall, while in Figure 2, the extra thickness was located on the inner wall of the draft (34).
  • Figure 4c shows schematically, in longitudinal half-section, a modality offset h, typically greater than H / 2, such that the constricted part (22) of the housing (2) is only partially covered internally by the constricted part (32) of the pocket (3).
  • Figure 5 shows schematically, in longitudinal section, a bag dispenser body according to the invention.
  • Figures 6a to 6c show, in longitudinal section, respectively, the blanks of the housing and the assembled bag, the same blanks after conformation, and after rolling the edge or chimney.
  • the relative excess thickness S is preferably at least equal to 1.2 and has substantially the same value over the entire height H 'of the upper part (37) of the blank (34) and therefore over the entire constricted wall ( 32) and possibly rolled (33) of the pocket (3), this height H 'being typically between 5 and 50 mm and preferably between 15 and 40 mm, for a height H of the upper part (27) of the blank (24) typically between 25 and 50 mm.
  • a variable relative thickness S is chosen, at least over a fraction of said height H ', making it possible to progressively go from the average thickness of the skirt (35) Eo to the maximum thickness E, because it has been found that the extra thickness S is all the more necessary as the metal is more shrunk by conification, in the same conified body.
  • a variable relative excess thickness S moreover avoids unnecessary consumption of metal and above all facilitates the extraction of the blank (34) from the mandrel when the latter is produced by stretching or calibration as shown diagrammatically in FIG. 2.
  • This relative excess thickness S can be located on the interior wall of the skirt (35) when it is obtained with a punch of variable section as shown diagrammatically in FIG. 2.
  • the sealed assembly of the blanks is carried out by a cylindrical annular junction (8) which is obtained either by chemical means, typically a thin adhesive layer, at most of a few 1 / 10ths of a mm thick, or by means mechanical, such as forcibly fitting the blank (34) into the blank (24), which is possible with calibrated blanks (24) and (34) and in particular in the case where the extra thickness S of the blank (34) is of variable thickness and located on its outer wall, or again by localized annular welding of the two upper parts (27) and (37).
  • a cylindrical annular junction (8) which is obtained either by chemical means, typically a thin adhesive layer, at most of a few 1 / 10ths of a mm thick, or by means mechanical, such as forcibly fitting the blank (34) into the blank (24), which is possible with calibrated blanks (24) and (34) and in particular in the case where the extra thickness S of the blank (34) is of variable thickness and located on its outer wall, or again by localized annular welding of the two upper parts (27) and
  • the adhesive can be chosen from solutions or dispersions of resins, as the case may be in an aqueous medium or in a solvent medium, based on EAA, EVA, VMCH (common copolymer designations), Surlyn (R) ionomer resin, or based on hot-melt resins, known as "hot-melt".
  • a maleic modified vinyl acetochloride copolymer is used.
  • the clearance between the blank (24) and the blank (34) after tight assembly is low.
  • the clearance between the upper part (27) of the blank of the housing and the upper part (37) of the blank of the pocket is typically between 0.05 and 0.5 mm.
  • the Applicant has observed that by assembling the two blanks by a cylindrical annular junction (8), of height possibly less than the height H 'of the upper part (37) of the pocket subjected to deformation, the metal walls of the two assembled blanks behaved in the conformation and rolling tool substantially like a single metal wall.
  • This cylindrical junction (8) becomes, after deformation by conification and rolling, the shaped annular junction (9), which secures all or part of the constricted walls (22) and (32) and possibly of the edges rolled (23) of the rigid case and (33) of the flexible pocket when the end of the flexible pocket forms a rolled edge (33).
  • this offset height h is less than H / 2, that is to say substantially 25 mm, so that, as illustrated in FIGS. 4a and 4b, the deformed part of the pocket (3) covers at least the constricted part. (22) of the housing so that the assembly of the valve (6) allows to pinch and mechanically fix the pocket (3) flexible at the neck (4) between two relatively rigid concentric surfaces which are the outer edge of the valve and the inner edge of the housing neck (2).
  • the constricted portion (22) of the housing or (32) of the pocket is defined as the portion of the housing or pocket that is only subjected to a reduction in diameter or that is shrunk during conification (portion located between dotted lines in FIG. 4a or 4b), as opposed to the rolled part (23) of the housing or (33) of the pocket, when it exists, which has been then subjected to expansion (slight increase in diameter after conification).
  • the blanks of the housing (24) and of the pocket (34) are preferably made of aluminum or aluminum alloy.
  • the blank of the housing (24) intended to form the rigid housing (2) is preferably made of aluminum alloy chosen from the 1000, 3000 and 5000 series according to the standardized designation of the AA (Aluminum Association) while the blank of the pocket (34) intended to form the flexible pocket (3) is preferably made of aluminum alloy chosen from the 1000 series, lightly loaded with additives or impurities.
  • the blank of the pocket (34) is in the annealed state so that the pocket (3) has sufficient flexibility.
  • the thickness of the skirt (25) of the blank of the housing is generally between 0.30 and 0.50 mm depending in particular on the pressure resistance which is required for the housing (2). Its diameter is between 35 and 66 mm in the case of the usual diameters of the distributor bodies (1).
  • the thickness Eo of the skirt (35) of the blank of the pocket is generally between 0.1 and 0.2 mm and preferably between 0.12 and 0.18 mm, except at the upper end of the skirt, over all or part of its height H ', where the maximum thickness E is generally between 0.25 and 0.45 mm, this thickness being variable as already mentioned over all or part of the height H'.
  • the blanks of the housing (24) and of the pocket (34) can be completely or partially covered with a protective coating, whether it is a varnish or a film resistant to deformation by conification and by rolling.
  • a protective coating whether it is a varnish or a film resistant to deformation by conification and by rolling.
  • the blank (24) of the housing has its painted and decorated external surface and its internal surface coated or not with a protective layer (varnish or plastic film), and the blank (34) of the pocket has its surface. internal coated with a protective layer (varnish or plastic film) compatible with the product to be packaged while its external surface can be bare or coated.
  • the bottom (21) of the housing is shaped, the bottom which has been provided with a central orifice (10) making it possible to introduce into the storage space (7) the propellant, typically a propellant, which may be partially in the liquid state.
  • the assembly by crimping or swaging, of a valve (6) to the dispenser body after filling the bag (3) with the product to be dispensed, and closing the orifice (10) after introduction of the propellant in the storage space (7) complete the manufacture of a pocket dispenser loaded with product to be dispensed.
  • A) Manufacture of a rough outer case blank a rigid housing blank (24) was manufactured by drawing-drawing from an aluminum alloy pin (alloy 1040 according to the designation of Aluminum Association): outside diameter 47 mm height 184mm wall thickness 0.30 mm at the bottom of the skirt - 0.35 mm at the top of the skirt After degreasing, a decoration was printed on the external surface of this housing blank. A layer of adhesive (maleic modified vinyl acetochloride) of 15 micrometers was deposited on the upper part of the interior surface of the housing, and this, over a height of 25 mm counted from the upper end. This adhesive was dried for 2 min at 80 ° C.
  • the inside diameter of the upper part of the housing blank is 46.10 mm.
  • Manufacturing of the pocket outline (34) we first made a blank of the semi-flexible pocket by drawing-stretching from a pawn in aluminum alloy (alloy 1040 according to the designation of the Aluminum Association) with a punch with a diameter shrunk from '' a height of 138 mm counted from its end, so as to obtain a pocket blank having the following dimensions: outside diameter 45.98 mm height 148 mm wall thickness 0.15 x 138 mm (lower part of the skirt) (in mm) 0.35 on 25 mm (upper part of the skirt) 0.15-0.35 on 10 mm of transition between upper part and lower part This semi-flexible pocket blank was then treated for 5 min at 500 ° C.
  • FIG. 6a shows different stages of the manufacture of the dispenser body according to the example.
  • the blanks of the housing and of the pocket are shown assembled in FIG. 6a, after conformation in FIG. 6b and after rolling in FIG. 6c, which shows in section the distributor body obtained according to the example described above.
  • the method of the invention is used to obtain pocket distributors comprising, in addition to the distributor body, a valve or a distribution pump fixed in a sealed manner thanks to the invention, by a cup for fixing this valve or pump, to or against the inside of the neck and on the rolled edge of the body whose pocket has just been filled with the dispensed product.
  • the bottom of the housing has an orifice for introducing propellant, closed by a plug after this introduction.
  • the invention provides a solution to the problem of sealing the valve in the case of bag dispenser bodies, the conical part of which has a high shrinkage rate.
  • the invention makes it possible to widen the range of bodies of pocket dispensers towards large diameters (high shrinkage rate), and provides greater security with regard to the tight fixing of the valve, compared to the prior art, even in the case of dispenser bodies with a low shrinkage rate, typically close to or less than 1.15.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Claims (25)

  1. Verfahren zur Herstellung des Hauptteils eines Spenders (1) mit Beutel, der aus einem starren äußeren Gehäuse (2) aus Metall gebildet ist, das einen dichten, flexiblen und knautschbaren Beutel (3) aus Metall enthält, umfassend die Herstellung eines starren Gehäuserohlings (24) und die Herstellung eines flexiblen Beutelrohlings (34), das abdichtende Zusammenfügen dieser beiden Rohlinge durch Verbinden eines oberen Abschnitts (27) des Gehäuserohlings (24) von der Höhe H mit einem oberen Abschnitt (37) des Beutelrohlings (34) von der Höhe H', derart, daß zwischen dem Boden (26) des Gehäuserohlings (24) und dem Boden (36) des Beutelrohlings (34) ein Speicherraum (7) für ein Treibmittel entsteht, und die gemeinsame Formgebung der genannten oberen Endabschnitte (27, 37) durch Kegeligmachen und Rollen zu einem verengten Hals (4), der die abdichtende Montage eines Ventils ermöglicht,
    dadurch gekennzeichnet, daß
    zur Ausbildung eines Halses (4) mit einer faltenfreien Innenfläche bei einem Verhältnis R der Querschnittsverkleinerung des genannten Beutels von wenigstens 1,15 und zur Sicherstellung der dichten Befestigung des Ventils zumindest ein Abschnitt des genannten oberen Endabschnitts (37) des Beutelrohlings (34) eine Wanddicke E aufweist, die größer ist als die mittlere Wanddicke Eo des Mantels (35) des genannten Beutelrohlings (34), derart, daß das durch das Verhältnis E/Eo definierte relative Übermaß S wenigstens gleich 1,15 ist.
  2. Verfahren nach Anspruch 1,
    bei dem das genannte relative Metall-Übermaß S wenigstens gleich ist dem Wert der Verhältnisses R der Querschnittsverkleinerung und wenigstens 1,2 beträgt.
  3. Verfahren nach Anspruch 2,
    bei dem das genannte Übermaß S vorzugsweise zwischen R + 0,3 und R + 1,3 beträgt.
  4. Verfahren nach einem der Ansprüche 1 bis 3,
    bei dem das genannte Übermaß S auf im wesentlichen der gesamten Höhe H' des oberen Abschnitts (37) des Rohlings (34) von gleichem Wert ist.
  5. Verfahren nach einem der Ansprüche 1 bis 3,
    bei dem das genannte Übermaß S zumindest in einem Teil der Höhe H' des zu verformenden oberen Abschnitts (37) des Rohlings (34) veränderlich ist, wobei die Dicke des Rohlings (34) dort allmählich von Eo auf E zunimmt.
  6. Verfahren nach einem der Ansprüche 1 bis 5,
    bei dem das genannte Übermaß S auf der Innenwand vom Mantel (35) des Beutelrohlings (34) gelegen ist.
  7. Verfahren nach einem der Ansprüche 1 bis 5,
    bei dem das genannte Übermaß S auf der Außenwand vom Mantel (35) des Beutelrohlings (34) gelegen ist.
  8. Verfahren nach einem der Ansprüche 1 bis 7,
    bei dem das abdichtende Zusammenfügen des Gehäuserohlings (24) mit dem Beutelrohling (34) durch eine zylindrische, kreisringförmige Verbindung (8) unter Anwendung chemischer Mittel oder durch eine kreisringförmige, örtlich begrenzte Schweißverbindung erzielt wird.
  9. Verfahren nach Anspruch 8,
    bei dem die genannten chemischen Mittel durch Klebstoffe gebildet sind, die aus der Gruppe mit Harzlösungen oder Harzdispersionen, fallweise in wäßrigem oder Lösungsmittelmilieu, auf der Basis von EAA, EVA, VMCH (Bezeichnungen üblicher Copolymere), von ionomerischem Kunstharz Surlyn® oder auf der Basis von warmschmelzenden Harzen, die unter dem Namen "Heißschmelzmasse" bekannt sind, gewählt sind.
  10. Verfahren nach einem der Ansprüche 1 bis 9,
    bei dem der genannte obere Abschnitt (37) des Beutelrohlings (34) nach innen in den Gehäuserohling (24) und in bezug auf den genannten oberen Abschnitt (27) des Gehäuserohlings (24) um eine Höhe h ≧ 0 ( h = H-H'
    Figure imgb0005
     ) nach innen in den Gehäuserohling (24), üblicherweise um weniger als H/2 versetzt ist, derart, daß der verformte Abschnitt des genannten Beutels (3) wenigstens den im Querschnitt verkleinerten Abschnitt (22) des genannten Gehäuses (2) bedeckt, und daS somit der flexible Beutel (3) zwischen dem Außenrand des genannten Ventils und dem Innenrand des Halses (4) vom genannten Gehäuse (2) beim Befestigen des Ventils geklemmt und mechanisch befestigt werden kann.
  11. Verfahren nach einem der Ansprüche 1 bis 9,
    bei dem die genannte Versetzungshöhe h so gewählt ist, daß der im Querschnitt verkleinerte Abschnitt des Beutels (3) den im Querschnitt verkleinerten Abschnitt des Gehäuses (2) nur zum Teil bedeckt.
  12. Verfahren nach einem der Ansprüche 1 bis 11,
    bei dem der Gehäuserohling (24) aus einer Aluminiumlegierung ist, die vorzugsweise aus den Reihen 1000, 3000, 5000 entsprechend der genormten Bezeichnung der AA (Aluminium Association) gewählt ist.
  13. Verfahren nach einem der Ansprüche 1 bis 12,
    bei dem der Beutelrohling (34) aus einer Aluminumlegierung im geglühten Zustand ist, die aus der Reihe 1000 (AA) mit geringem Anteil an Zusatzelementen oder Verunreinigungen gewählt ist.
  14. Verfahren nach einem der Ansprüche 1 bis 13,
    bei dem der Gehäuserohling (24) einen Mantel (25) von einer Dicke zwischen 0,30 und 0,50 mm und einem Durchmesser zwischen 35 und 66 mm aufweist.
  15. Verfahren nach einem der Ansprüche 1 bis 14,
    bei dem die mittlere Dicke Eo des Mantels (35) vom Beutelrohling (34) zwischen 0,1 und 0,2 mm, vorzugsweise zwischen 0,12 und 0,18 mm beträgt, ausgenommen im oberen Abschnitt (37) des Mantels über der ganzen oder einem Teil seiner Höhe H', in dem die maximale Dicke E zwischen 0,25 und 0,45 mm beträgt, wobei die Dicke E auf der ganzen oder einem Teil der Höhe H' veränderlich sein kann.
  16. Verfahren nach einem der Ansprüche 1 bis 15,
    bei dem die Rohlinge (24) und (25) zum Teil oder ganz mit einem Schutzüberzug beschichtet sind.
  17. Verfahren nach Anspruch 16,
    bei dem der Rohling (24) des Gehäuses (2) eine lackierte und dekorierte Außenfläche aufweist, und der Rohling (34) des Beutels innen mit einer Schutzschicht aus Lack oder Kunststoffolie bedeckt ist.
  18. Hauptteil eines Spenders (1) mit Beutel, der von einem starren äußeren Gehäuse aus Metall (2) gebildet ist, das einen flexiblen, dichten und knautschbaren Beutel (3) aus Metall mit einem Mantel (30) aufweist, wobei die oberen Abschnitte des genannten Gehäuses (2)und des genannten Mantels vom Beutel (3) miteinander verbunden sind und eine Querschnittsverkleinerung bilden, die in einem Hals (4) endet, der sich in einem außengerollten Rand (33) fortsetzt, wobei das Verhältnis R der Querschnittsverkleinerung des genannten Beutels (3) zumindest gleich 1,15 ist und dieses Hauptteil nach dem Verfahren gemäß einem der Ansprüche 1 bis 17 erzielbar ist,
    dadurch gekennzeichnet, daß
    der genannte Mantel (30) des Beutels (3) weniger als 10 mm vor Beginn der genannten Querschnittsverkleinerung eine maximale Dicke E1 aufweist, die größer als die mittlere Dicke Eo des Mantels (30) in seinem im Querschnitt nicht verkleinerten Abschnitt ist, wobei E1/Eo wenigstens gleich 1,15 ist und die Innenfläche des genannten Halses (4) faltenfrei ist.
  19. Spender-Hauptteil nach Anspruch 18,
    bei dem die Innenfläche der Querschnittsverkleinerung (32) vom Mantel (30) ebenfalls faltenfrei ist.
  20. Spender-Hauptteil nach einem der Ansprüche 18 oder 19,
    bei dem E1/Eo wenigstens gleich R ist und zumindest 1,2 beträgt.
  21. Spender-Hauptteil nach einem der Ansprüche 18 oder 19,
    bei dem E1/Eo größer oder gleich R + 0,3 ist.
  22. Spender-Hauptteil nach einem der Ansprüche 20 oder 21,
    bei dem das genannte Verhältnis R der Querschnittsverkleinerung größer als 1,35 ist.
  23. Spender-Hauptteil nach einem der Ansprüche 18 bis 22,
    bei dem das genannte Metall des Beutels (3) aus Aluminium oder Aluminiumlegierung ist.
  24. Spender mit Beutel, mit dem Spender-Hauptteil (1) nach einem der Ansprüche 18 bis 23 und außerdem mit einem Ventil oder einer Spendepumpe, das bzw. die mit einer Befestigungskapsel versehen ist, welche abdichtend im Innern des genannten Halses (4) und auf dem genannten gerollten Rand des Hauptteils (1) befestigt ist.
  25. Spender nach Anspruch 24, zum Abgeben eines Aerosols und mit einem Spendeventil, wobei das äußere Gehäuse (2) seines Hauptteils (1) eine Öffnung (10) zum Einfüllen des Treibfluides aufweist.
EP19920420458 1991-12-17 1992-12-11 Verfahren zur Herstellung eines Sprühdosenkörpers mit einem metallischen Innenbehälter sowie Sprühdosenkörper und entsprechende Sprühdose Expired - Lifetime EP0547982B1 (de)

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Application Number Priority Date Filing Date Title
FR9115967 1991-12-17
FR9115967 1991-12-17

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EP0547982A1 EP0547982A1 (de) 1993-06-23
EP0547982B1 true EP0547982B1 (de) 1995-09-06

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2130465T3 (es) * 1995-05-19 1999-07-01 Gerd Stoffel Procedimiento para la fabricacion de un envase a presion de doble camara.
DE19746018C2 (de) * 1997-10-17 2000-12-21 Lechner Gmbh Verfahren zur Herstellung einer Zweikammerdruckpackung und Vorrichtung zur Durchführung des Verfahrens
BR9906502A (pt) * 1998-05-20 2000-09-19 Cebal "corpo de distribuidor sob pressão que possui uma câmara metálica ou metaloplástica, a dita câmara e seu processo de obtenção"
FR2781209B1 (fr) 1998-07-17 2000-08-25 Cebal Distributeur de produits cremeux sous pression muni d'un piston etanche
FR2781210B3 (fr) 1998-07-17 2000-08-18 Cebal Distributeur de produits cremeux sous pression muni d'un piston etanche

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2083382B (en) * 1980-09-08 1984-06-20 Metal Box Co Ltd Forming can bodies
DE3802314C1 (de) * 1988-01-27 1989-10-26 Stoffel, Gerd, 7750 Konstanz, De
DE3925211A1 (de) * 1989-06-24 1991-01-17 Miczka Franz Lothar Geneckte druckdose mit einem im dosenzylinder untergebrachten substratfolienbeutel

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DE69204640D1 (de) 1995-10-12
DE69204640T2 (de) 1996-03-21

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