EP1338356A2 - Méthode et dispositif pour la fabrication d' un récipient sous pression - Google Patents

Méthode et dispositif pour la fabrication d' un récipient sous pression Download PDF

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Publication number
EP1338356A2
EP1338356A2 EP03001947A EP03001947A EP1338356A2 EP 1338356 A2 EP1338356 A2 EP 1338356A2 EP 03001947 A EP03001947 A EP 03001947A EP 03001947 A EP03001947 A EP 03001947A EP 1338356 A2 EP1338356 A2 EP 1338356A2
Authority
EP
European Patent Office
Prior art keywords
lacquer
paint
opening
pressure
diameter
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.)
Withdrawn
Application number
EP03001947A
Other languages
German (de)
English (en)
Other versions
EP1338356A3 (fr
Inventor
Konrad BÖHM
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.)
Lechner GmbH
Original Assignee
Lechner GmbH
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 Lechner GmbH filed Critical Lechner GmbH
Publication of EP1338356A2 publication Critical patent/EP1338356A2/fr
Publication of EP1338356A3 publication Critical patent/EP1338356A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B21D51/24—Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles
    • 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

Definitions

  • the invention relates to a method for producing a pressure pack according to the The preamble of claim 1 appended here and an apparatus for producing a Pressure pack according to the preamble of claim 13 appended hereto Methods and such a device are known from WO 99/20413.
  • Pressure packs are mostly used as aerosol cans, also called spray cans. They are generally essentially cylindrical in shape and have a tapered shape Mouthpiece that by means of a pressure valve or aerosol valve, through which the Filling is dispensed, is closed. The opening of the pressure packs with the Pressure valves are closed to an inch, i.e. H. 25.4 mm diameter standardized.
  • single-chamber pressure packs which consist of a single, except for the valve opening, completely closed, mostly made of aluminum
  • two-chamber pressure packs as they are with the method can be produced according to the publication WO 99/20413 mentioned at the beginning. Two-chamber pressurized packages have an inner container inserted in the outer container, with propellant between the between through a hole in the bottom of the outer container Inner and outer container formed space can be filled.
  • the cylindrical blank of the outer container is inserted an inner container is used, as described in WO 99/20423.
  • the inner container is a soft annealed aluminum bag, which expanded at its opening edge and with which the opening of the Outer edge of the container is connected by gluing.
  • the so together connected edges of the inner and outer containers then together become the Mouthpiece retracted and flanged.
  • the method according to the preamble of appended claim 1 and the device according to the preamble of the appended Claim 13 can be improved in such a way that pressure packs e.g. with bigger Outside diameter and standard valve opening diameter or Large-scale pressure packs with smaller valve opening diameters without leaks are producible.
  • the invention thus provides a method for producing a pressure pack in which First, a blank of a substantially cylindrical shape with a first diameter - which determines the outer diameter of the pressure pack - and provided with an apertured open end, d. H. in particular is made in the usual way and then the open end becomes one tapering mouthpiece which can be sealed by a pressure valve by pulling in and crimping the edge of the printing package blank bordering the opening becomes. With this shaping of the mouthpiece the diameter of the opening starting from the first diameter to a smaller second diameter, the corresponds in particular to the standard valve opening width of 25.4 mm. According to the invention, the one in the molding process of the mouthpiece then becomes one Bead shaped edge on its intended for sealing detection of the pressure valve Surface area coated with a varnish.
  • the materials differ in the flanging so that very fine cracks and unevenness occur in the surface.
  • the cracks are usually only visible under the microscope, but in some cases they also occur strongly that they are also visible to the normal eye. Those in the micrometer range lying cracks can be caused by the usually inserted in the top of the pressure valve Rubber seal can no longer be sealed.
  • UV varnish is used as the varnish is used, which is exposed to UV radiation after application to the flange becomes.
  • Such UV varnishes have the special feature that they are exposed to ultraviolet radiation Harden light immediately. For example, one based on UV-crosslinked acrylic resins built-up paint used.
  • a varnish with a viscosity of 15-40 sec is advantageously used here. preferably used for about 25 seconds, here the viscosity according to DIN 53211 with the Time is specified that the varnish at 20 ° C for the outflow from the DIN cup of 4 mm needed.
  • the measurement of this expiration time with diving cups is due to the simple Handling in practice as a standard test method for determining viscosity of paints used in production and incoming goods inspection.
  • the varnish is preferred applied very thinly, for example with a layer thickness of approx. 1-10 ⁇ m and in particular with a layer thickness of 2-3 ⁇ m.
  • the application of the varnish can by spraying, rolling, dipping, painting.
  • a material wetted with varnish Preferably for application of the varnish of the bead is brought into contact with a material wetted with varnish.
  • the Material is preferably elastic, so that there is good contact at any point on the surface to be wetted Surface is ensured. Suitable materials are felt, foam or Rubber, with felt or foam preferred for its liquid-absorbing effect are. If, as is further preferred, the material wetted with lacquer and the this contacting pressure pack moves relative to each other during contact This has the advantage that the varnish literally in the unevenness to be leveled is smeared in or pushed in. This is preferably done with Paint wetted material rotated relative to the bead.
  • the Milling the flange before applying the varnish. Under certain circumstances, this also affects the adhesiveness of the paint enlarged.
  • the process can also be used to print such packs seal securely, the mouthpiece of which is larger than 45 mm, for example a diameter of approx. 50 mm - minus if necessary the wall thickness of the blank - to the standard valve opening diameter size of about 25.4 mm (1 inch) is reduced.
  • the method according to the invention is particularly well suited for two-chamber pressure packs, in which the pressure pack blank consists of an outer container and a inner container used in the manufacture of the pressure pack blank So an inner container inserted into the outer container and in the area of the edge of the Opening is connected to the outer container.
  • the procedure is also for those Two-chamber pressure packs, in which the inner container and the outer container in the area of the edge to be flanged with an elastic adhesive be connected, because then in the area of the flare a mix of hard materials Material (outer container), elastic material (adhesive) and soft material (soft annealed Inner container) exists, which tends to wrinkle when flanging.
  • the device according to the invention for producing the pressure pack and for carrying it out of the method according to the invention has, as is already in use, pressure pack manufacturing devices a provision device for providing the substantially cylindrical pressure chamber blank with an opening at its open end is provided with a still wide first diameter, and a pulling and flanging device, by means of which the edge of the pressure chamber blank bordering the opening to the tapered mouthpiece while reducing the opening from the first diameter to the standard smaller diameter and is flanged. According to the invention is further in the conveying direction of the pressure chamber blanks after the pulling-in and flanging device or after tools of the same Paint application device is provided, by means of which paint on the through the retracting and Beading device can be applied to a beaded edge.
  • the pressure pack manufacturing device also has a UV lamp for curing a UV lacquer applied by the lacquer application device.
  • the paint application device with a body wetted with paint provided, which can be brought into contact with the flange.
  • the body is preferably composed made of absorbent and / or elastic material such as felt, foam or rubber.
  • a relative movement device ensures a relative movement the body and the flange to be painted. This is preferably by means of a rotating device for rotating the body relative to the pressure packs to be coated with varnish educated.
  • the paint application device also has one by means of a Valve, such as needle valve, controllable paint supply device for continuous Feeding the paint to the body or to track a used one Quantity of paint.
  • a Valve such as needle valve
  • controllable paint supply device for continuous Feeding the paint to the body or to track a used one Quantity of paint.
  • the paint supply device is blocked, with the result that the paint flows away to prevent irregular paint thicknesses on the application unit.
  • the entire manufacturing device is preferably used as an automatic manufacturing system or a part of it is formed, which is controlled fully automatically by means of a control. Accordingly, the individual devices of the device are controlled automatically.
  • the paint application device is connected to a row of tools of the drawing-in and flanging device like another tool of the same is provided.
  • tools are usually equidistant to each other so that they successively reshape a series of pressure packs can determine which pressure packs are conveyed to the next tool become.
  • the tool carrier with the row of tools is relative for flanging to a holding and conveying device in which the row of pressure pack blanks preferably kept equidistant and transported from station to station, around all tools at the same time with their respective blanks for processing to engage.
  • the paint application device can then be moved with the same movement engages with the molded package to be painted bring.
  • the UV lamp could also be used as another tool on the paint application device connect as another station.
  • the paint application device preferably has a housing and a housing thereon or therein housed paint application disk, the paint application disk relative to the housing is rotatable by means of a motor, for example a servo motor. Preferred speed ranges for the motor are 30-300 rpm.
  • the housing is further preferably on its end facing the pressure pack blanks is cup-shaped and grips around the rotatable paint application disc, so that its edges are completely are encompassed by the housing. This way, the paint application disc dripping paint caught in the housing. Only a flat area of the paint application disc is then accessible to the blank blanks.
  • the insertion opening also preferably forms a stop for these mouthpieces, so that these in contact the paint application disc in a precisely defined position and apply an even paint application is guaranteed.
  • the insertion opening is, for example, in one at this end placed on a housing base body housing cover, which for Replacement of a body made of absorbent material applied to the paint application disc Material is held detachably on the housing.
  • the provided with absorbent material Paint application disk is preferably rotatable about a horizontal axis of rotation.
  • the paint supply device is provided on the housing, the paint from a dosing unit precisely dosed amount to the paint application disc. From the paint application disc Dripping and thus superfluous paint can be preferred by using a below of the absorbent material remove the drain device.
  • FIGS. 1 to 4 a method for producing a Pressure pack described, in which a mouth opening of the pressure pack framing bead for the purpose of a perfectly sealing closure with a Dispensing valve is repainted.
  • a Printing package blank as shown in FIG. 1 with reference number 2 in a first embodiment and in FIG. 2 with the reference number 4 in a second embodiment is shown.
  • FIG. 1 shows a pressure pack blank 2 for producing a single-chamber pressure pack and FIG. 2 shows a pressure pack blank 4 for producing a two-chamber pressure pack.
  • the pressure pack tube blank 2 shown in Fig. 1 for producing a A single-chamber pressure pack consists of an essentially cylindrical one External container 6 made of aluminum, the cylinder jacket 8 already the later Outside diameter of the first to determine the pressure pack to be produced Has (inner) diameter D1.
  • the printing package blank 2 is through at one end closed a bottom 10 and completely forming an opening 14 at the other end 12 open.
  • the base 10 is usually curved inwards, but shown here for the sake of simplicity.
  • the opening 14 has the pressure Packing blanks 2, 4 also have the first diameter D1 as the opening width.
  • the outer container 6 is made of aluminum. To do this, it is made from an aluminum disc (not shown) brought into the shape shown in FIG. 1 by cold working. In this form the cylinder jacket 8 is provided on the outside with the color design desired by the customer and provided with an interior protective lacquer on the inside.
  • the pressure pack blank shown in FIG. 2 for producing a two-chamber pressure pack also has the outer container 6 previously described with reference to FIG. 1, the same reference numerals designating the same parts as in the first embodiment.
  • an inner container also referred to as an inner bag 16 made of soft annealed aluminum.
  • Edge 18 is the inner container 16 and the outer container 6 together by an adhesive firmly connected.
  • the production of the pressure pack blank 4 takes place in the in of WO 99/20413 described manner in which document hereby in its entirety is referred. Before inserting and widening the inner container 16, this is provided with an interior protective varnish on the inside.
  • the edge region 18 of the printing package blanks is then used to produce a printing package 2 or 4 brought into the form shown in Fig. 3.
  • the edge 18 Edge region 20 of the open end 12 of the pressure pack blank 2, 4 is covered by a Pull-in process for one starting from the first diameter D1 for one standardized second smaller diameter D2 tapered mouthpiece 22 shaped.
  • the edge 18 is formed into a flange 24 by flanging.
  • the second diameter D2 is one inch, i.e. approximately 25.4 mm, the first diameter D1 being more than 45 mm, around an outer diameter to form the pressure pack of about 50 mm or more.
  • the now scaled down Opening 14, which is bordered by the flange 24, is standardized to the diameter D2, to the usual bottling plants and in particular to delivery valves, such as Aerosol valves (not shown) with which the opening 14 'after filling the Pressure pack is sealed to be compatible.
  • the ones from the blister packs 2, 4 formed pressure packs tend to larger D1 at the first Flare to bumps, especially in the form of folds and cracks on the surface available. Such bumps occur particularly when d. H. on the mouthpiece 22, the edge region 20 and the edge 18 different material pairings can be used, as is the case with the blank 4 with the relatively hard outer container 6 made of aluminum, the elastic adhesive and the soft annealed Aluminum inner container 16 is the case.
  • this one provided methods that of a pull-in and formed by a pull-in machine Beading device supplied cylindrical pressure pack blanks 2, 4, as in previous also used, gradually drawn in up to the finished bead 24.
  • the flange 24 is in a for sealing with the dispensing valve certain sealing area 26 wetted with UV varnish 28, as shown in Fig. 4.
  • the UV varnish 28 is then applied at a further station by means of a rather UV radiation source cured in no time.
  • the flange 24 is short beforehand roughened to achieve better paint adhesion or to level larger ones Bumps milled and then with a protective paint layer 30 from the UV varnish 28 provided.
  • the application of the sealing lacquer layer 30 by spraying, rolling, dipping or painting.
  • the application is preferably carried out the lacquer layer 30 by contacting a material wetting the lacquer 28, preferably felt, foam or rubber.
  • the refinishing of the flange 24 is D1 for all flange shapes and all diameters of one- and two-chamber pressure packs, in particular aerosol cans, can be used to Scoring, cracks, folds, paint peeling, etc. equalize in the sealing area 26.
  • the UV lacquer 28 is applied in a very thin lacquer layer 30 and then with the UV lamp hardened.
  • the curing time of the UV varnish and the thickness of the coating layer chosen such that the curing time is approximately in the range of about half Second.
  • This application of varnish is preferably carried out in the drawing-in and flanging device, So carried out for example in a drawing machine.
  • the curing time is therefore set to such a short time, so high clock numbers of more than about 100 pieces per minute are possible. May also be instead of UV varnish other quickly curable paints are suitable for such cycle times.
  • a UV varnish 28 in a preferred embodiment, a lacquer based on UV-crosslinking acrylic resins of very high chemical resistance.
  • the viscosity of the paint 28 is measured with the DIN cup 4 mm, 15- 40 sec (flow time from the cup), preferably 25 sec.
  • a paint application device for application the lacquer layer 30 described on the flange 24.
  • the paint application device 40 has a housing 42, a rotating device 44, a paint feed device 46, a through the rotating device 44 rotatable paint application disc 48 and a drain device 50 for superfluous paint.
  • the housing 42 is in a precise position with a positioning device formed by adjusting nuts 52 in a device for producing a pressure pack, in particular one Retracting and flanging device of the same, attachable.
  • the housing 42 encloses for the most part the paint application disc 48, the one receiving the paint application disc 48 Space 54 at an end 56 of the housing that faces the pressure packs 42 with a housing cover 58 releasably attached to the basic housing body is covered.
  • the housing cover 58 has a tapering centering insertion opening 60, which are used to precisely position and center the mouthpiece 22 serves.
  • the rotating device 44 comprises a servo motor which can be rotated at 30-300 rpm 62, which is supplied with energy and control commands via a cable feed 64.
  • the paint application disk 48 comprises a one placed on the axis of the servo motor 62 Driving plate 66 on which a body 68 for the lacquer application is fastened.
  • the body 68 consists of elastic and / or absorbent material such as sponge or preferably Felt.
  • the axis of rotation 70 of the servo motor 62 and the paint application disc 48 is horizontal arranged.
  • the paint supply device is located above the paint application disk 48 46, which supplies paint 28 from a lockable metering unit. Below the paint application disc there is the drain device 50 for from the paint application disc 48 dripping unnecessary paint.
  • the pressure pack manufacturing device 74 comprises a provision device 76 for provision the blanks 2 or 4, a pulling and flanging device for drawing in and flanging the edge 18 of the pressure chamber blanks bordering the opening 14 2, 4 to the tapered mouthpiece 22 and the lacquer application device 40th
  • the provision device 76 is essentially known, for example, from WO99 / 20413 and not interesting here, which is why it is only shown as a block.
  • the drawing-in and flanging device has a tool carrier 80 in the form of a fixed one Wheel with a number of retracting tools arranged here one after the other in a circle 82, which are each arranged at the same distance from one another.
  • the pulling and flanging device 78 further comprises a holding and conveying device 84 for holding and conveying the pressure pack blanks 2, 4.
  • the holding and conveying device 84 is in the form of a rotatable relative to the tool carrier 80 and axially movable wheel 86 formed on its circumference in corresponding receptacles 88 firmly holds the blank blanks.
  • the wheel 86 of the holding and conveying device 84 rotates at a distance from the tool carrier 80 to the in the receptacles 88 held blister packs to move from one tool to the next and then moves axially toward the tool carrier 80 without rotating the pressure pack blanks 2, 4 with the individual drawing-in and flanging tools 82 to engage and then axially away from the tool carrier 80.
  • Paint application device 40 which is like another drawing tool on the tool carrier 80 is attached and to the metering unit 90, which by means of a controller 92 controlled valve 94 is lockable when the device 74 is stopped is.
  • a paint receptacle 96 is connected to the drain device 50.
  • a UV lamp 98 for curing of the UV varnish 28 is provided.
  • the servo motor 62 is also outside of the Paint application device 40 arranged.
  • the function of the pressure chamber manufacturing device 74 is in manufacturing the 2 in such a way that initially in the provision device 76 the outer container 6 is manufactured and painted in the manner shown in FIG. 1 becomes.
  • the inner container 16 is manufactured and painted, then annealed, then expanded with an expanding tool and glue overdrawn. Then the outer container 6 is placed over the inner container 16, and then by further widening the inner container edge, the two containers 6, 16 glued together. Then the edges 18 in the retraction and Flanging device 78 retracted.
  • There are a number of pulling tools for pulling in 82, with which the pressure pack blanks 4 are successively engaged become.
  • the pressure pack blanks 4 are located in the large wheel 86 that is moved axially for curling.
  • Rotation of the wheel 86 changes the blister packs 4 to the next tool 82.
  • the tools 82 are also on one Arranged (fixed) wheel that forms the tool carrier 80.
  • the series of Retracting tools 82 ultimately become the paint application device as a further tool 40 added.
  • This has a felt or the like liquid-absorbent material (Body 68).
  • the body 68 is slowly rotated by means of the electric motor 62.
  • the body 68 picks up the paint 28.
  • the turning means that the paint despite its high Viscosity remains evenly distributed. I.e. even if the device stops, Despite its relatively low viscosity, the varnish does not sink downwards, it is always uniform spread over the body 68.
  • the paint 28 becomes the body 68 via the valve 94 directed.
  • valve 94 closes to shut off excessive paint avoid.
  • the flange 24 is pressed Pressure chamber blank 4 briefly on the body 68, the flange 24 takes a corresponding one Quantity of paint 28.
  • the paint application is so thin that the paint 28 due to adhesive forces despite the horizontal pressure pack layer evenly distributed on the flange 24 remains.
  • the paint-wetted bead 24 is fed to the UV lamp 98, which cures the paint 28 immediately.
  • the then finished printing package then becomes Shipping to the bottler prepared.
  • the seal with the dispensing valve is then from made to the bottler.
EP03001947A 2002-02-20 2003-01-30 Méthode et dispositif pour la fabrication d' un récipient sous pression Withdrawn EP1338356A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10207129 2002-02-20
DE10207129A DE10207129B4 (de) 2002-02-20 2002-02-20 Verfahren und Vorrichtung zum Herstellen eines Druckpackungsbehälters

Publications (2)

Publication Number Publication Date
EP1338356A2 true EP1338356A2 (fr) 2003-08-27
EP1338356A3 EP1338356A3 (fr) 2005-06-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03001947A Withdrawn EP1338356A3 (fr) 2002-02-20 2003-01-30 Méthode et dispositif pour la fabrication d' un récipient sous pression

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US (1) US20030178136A1 (fr)
EP (1) EP1338356A3 (fr)
DE (1) DE10207129B4 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11633758B2 (en) 2019-04-19 2023-04-25 Photex Inc. System and method for inside of can curing
WO2021252724A1 (fr) * 2020-06-10 2021-12-16 Photex Inc. Fabrication de boîtes au moyen d'un système doté de stations d'irradiance à bande étroite

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4045860A (en) * 1975-05-07 1977-09-06 Cebal Method of assembling an aerosol dispenser
US5069590A (en) * 1988-01-27 1991-12-03 Gerd Stoffel Process for producing a two-chamber pressurized package
WO1999020413A1 (fr) * 1997-10-17 1999-04-29 Lechner Gmbh Procede et dispositif pour produire une bombe a aerosol comportant deux chambres
DE19932680A1 (de) * 1999-06-10 2000-12-21 Lechner Gmbh Verfahren und Vorrichtung zur Herstellung einer Zweikammerdruckpackung, Bearbeitungswerkzeug zur Verwendung darin sowie damit herstellbare Zweikammerdruckpackung
FR2820127A1 (fr) * 2001-01-30 2002-08-02 Pechiney Emballage Alimentaire Poche et boitier muni de cette poche permettant d'obtenir un distributeur a taux de restitution ameliore

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4045860A (en) * 1975-05-07 1977-09-06 Cebal Method of assembling an aerosol dispenser
US5069590A (en) * 1988-01-27 1991-12-03 Gerd Stoffel Process for producing a two-chamber pressurized package
WO1999020413A1 (fr) * 1997-10-17 1999-04-29 Lechner Gmbh Procede et dispositif pour produire une bombe a aerosol comportant deux chambres
DE19932680A1 (de) * 1999-06-10 2000-12-21 Lechner Gmbh Verfahren und Vorrichtung zur Herstellung einer Zweikammerdruckpackung, Bearbeitungswerkzeug zur Verwendung darin sowie damit herstellbare Zweikammerdruckpackung
FR2820127A1 (fr) * 2001-01-30 2002-08-02 Pechiney Emballage Alimentaire Poche et boitier muni de cette poche permettant d'obtenir un distributeur a taux de restitution ameliore

Also Published As

Publication number Publication date
US20030178136A1 (en) 2003-09-25
DE10207129A1 (de) 2003-09-11
EP1338356A3 (fr) 2005-06-01
DE10207129B4 (de) 2004-04-01

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