EP0925236B1 - Spraying can - Google Patents

Spraying can Download PDF

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Publication number
EP0925236B1
EP0925236B1 EP97941980A EP97941980A EP0925236B1 EP 0925236 B1 EP0925236 B1 EP 0925236B1 EP 97941980 A EP97941980 A EP 97941980A EP 97941980 A EP97941980 A EP 97941980A EP 0925236 B1 EP0925236 B1 EP 0925236B1
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EP
European Patent Office
Prior art keywords
spray
paint
pressure
bar
propane
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EP97941980A
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German (de)
French (fr)
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EP0925236A1 (en
Inventor
Rolf Schiestel
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Peter Kwasny GmbH
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Peter Kwasny GmbH
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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
    • B65D83/75—Aerosol containers not provided for in groups B65D83/16 - B65D83/74
    • B65D83/752—Aerosol containers not provided for in groups B65D83/16 - B65D83/74 characterised by the use of specific products or propellants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material

Definitions

  • the invention relates to a spray can containing a paint or a paint preparation material and a blowing agent, in particular a propellant gas from a propane / butane mixture, the generates a pressure of 4.5 bar to 6 bar in the spray can, whereby the paint or the paint preparation material Opening a valve can be sprayed.
  • a blowing agent in particular a propellant gas from a propane / butane mixture
  • Such spray cans are e.g. from DE 28 19 635 C2, DE 38 08 405 C1 or DE 195 11 771 A1 for a wide range of applications and for the most diverse to be sprayed Materials are known and have been special for many years for the household and the DIY sector in millions Number of pieces sold.
  • Paint preparation materials in spray cans are common Propane / butane germ propellant with one pressure of about 4.7 bar (at room temperature) as used in the DE 28 19 635 C2 (corresponds to the preamble of claim 1) is described.
  • Spray cans for paints and paint preparation materials are mainly in the do-it-yourself area for car repair painting used.
  • the industrial serial painting is followed by the coating usually by compressed air, airless, air-assisted Airless or electrostatic atomization (see E. Springmann, "Paint spray coating technology today” in the Trade magazine “Farben + Lacke”).
  • Low pressure paint sprayers or high pressure paint sprayers used in the craft or industrial auto repair paint jobs.
  • the high-pressure spraying is that most common painting processes. Even if the Quality of the surface in the series painting in the Automotive industry or for refinishing meets the desired requirements, it must be borne in mind that this painting process has the biggest "overspray" and only achieved an order efficiency of around 30% to 50%.
  • Conventional spray cans are used because of their small amount of paint and the very uneven paint application from professional users such as car repair shops or in industrial serial painting only in very little Scope used, but mainly in the do-it-yourself area.
  • the object of the present invention is therefore a spray can of the type mentioned so that both the Order efficiency and the working speed of the Spray can, as well as the result of the paint flow and paint level are comparable to that of an HVLP spray gun.
  • This solution creates a spray can that due to higher application rates for use in professional area, especially for Processing of paints and paint preparation materials for professional car painters.
  • the application efficiency of the spray can according to the invention comparable or better than that of a modern HVLP spray gun.
  • the paint material in A wide-angle atomization becomes a working speed enables the working speed of a Spray gun comes close.
  • the distribution of the Paint particles due to the increased pressure in connection with the Wide jet atomization so fine that flow and paint level comparable results as when using a spray gun bring.
  • the pressure in the spray can is 5.0 to 5.5 bar.
  • the application rate of the paint material can be applied continuously advantageously be 18 g to 28 g per 10 seconds.
  • the pressure in the spray can at one particularly advantageous embodiment of the invention, 5.2 bar can the application rate of the varnish is usually about 10 g within 10 seconds with conventional spray cans that have a pressure of 3.5 to 3.6 bar, to about 20 g Increase to 24 g in the same time unit.
  • the spray can according to the invention no compressed air is used while using spray guns the material to be sprayed under a pneumatic pressure exposed that creates a mist of paint and above causes an air rebound in front of the workpiece, so that the incoming paint particles in part be thrown back. This effect is called "overspray" designated.
  • the desired pressure increase compared to conventional spray cans can be in an embodiment of the invention Achieve the spray can by using the known propane-butane mixture, that a pressure of about 4.2 bar at 20 ° C generates an additional portion of propane up to an amount is mixed in, at which the pressure in the spray can desired value reached.
  • a pressure of about 5.2 bar leaves can be achieved according to the invention in that the propellant gas mixture 72% from the known propane-butane mixture with a Pressure of 4.2 bar at 20 ° C and 28% propane with a Pressure of 9.1 bar at 20 ° C.
  • the increased paint application rate can be sprayed with a wide jet with homogeneous distribution of the paint particles in one of the Spray gun modeled on elliptical spray pattern atomize much more evenly than the conventional one Round nozzle. This ensures optimal processing of the Enables paint materials.
  • Known spray cans usually use a propellant gas Propane-butane mixture, in which the ratio of propane to Butane varies from 50:50 to 65% propane and 35% butane.
  • the Pressure of the propane / butane propellant mixture is from Manufacturer always exactly to the desired value of 4.2 bar set. This leads together with that to be sprayed Paint material to a pressure in the spray can from 3.5 to 3.6 bar.
  • the propellant gas mixture used in the spray can according to the invention consists of 72% of that described in Example 1 Propane / butane mixture at a pressure of 4.2 bar. 28% of The propellant gas mixture is pure propane with a pressure of 9.1 bar. Overall, this results in a spray can pressure of 5.2 bar.
  • paint materials such as basecoats, clearcoats, topcoats, and spray fillers, Corrosion protection agents, plastic adhesion promoters, etc. used.
  • the main advantages of using the invention Spray can applicable new spray technology compared to the Spraying techniques do not result in material savings remaining quantities, only small spray mist, a high Order efficiency and non-existent pot lives, in a cost reduction due to lower energy costs (Air consumption) and significantly lower disposal costs for paint materials as well as in handling and saving time, there are no set-up times compared to the spray gun technology are necessary, no cleaning of the spray gun necessary is, it has a lower weight and also Finished paint mixtures can be used, so that no Mixing process is more required.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Nozzles (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Road Repair (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Spray Control Apparatus (AREA)

Abstract

A spray can, particularly for paints and paint preparation materials, is pressurized with a propellant, particularly propellant gas, as a result of which the paint material can be sprayed when a valve is opened. In order to substantially increase the paint output amount per unit time so that a greater layer thickness is achieved in the same working time, the propellant provided in the spray generates a pressure of 4.5 to 6 bar, the output amount of the paint material is 15 g to 35 g per 10 seconds for uninterrupted flow, and that the paint is output in the form of broad-stream atomization.

Description

Die Erfindung betrifft eine Sprühdose enthaltend einen Lack oder ein Lackiervorbereitungsmaterial und ein Treibmittel, insbesondere ein Treibgas aus einem Propan/Butan-Gemisch, das in der Sprühdose einen Druck von 4,5 bar bis 6 bar erzeugt, wodurch der Lack oder das Lackiervorbereitungsmaterial bei Öffnen eines Ventils versprüht werden kann.The invention relates to a spray can containing a paint or a paint preparation material and a blowing agent, in particular a propellant gas from a propane / butane mixture, the generates a pressure of 4.5 bar to 6 bar in the spray can, whereby the paint or the paint preparation material Opening a valve can be sprayed.

Derartige Sprühdosen sind z.B. aus der DE 28 19 635 C2, DE 38 08 405 C1 oder DE 195 11 771 A1 für unterschiedlichste Anwendungsbereiche und für unterschiedlichste zu versprühende Materialien bekannt und werden seit vielen Jahren insbesondere für den Haushalt sowie den Heimwerkerbereich in Millionen Stückzahlen vertrieben. Zur Verarbeitung von Lacken und Lackiervorbereitungsmaterialien in Sprühdosen werden häufig Treibmittel aus einem Propan/Butan-Germisch mit einem Druck von etwa 4,7 bar (bei Raumtemperatur) verwendet, wie es in der DE 28 19 635 C2 (entspricht den Oberbegriff des Anspruchs 1) beschrieben ist.Such spray cans are e.g. from DE 28 19 635 C2, DE 38 08 405 C1 or DE 195 11 771 A1 for a wide range of applications and for the most diverse to be sprayed Materials are known and have been special for many years for the household and the DIY sector in millions Number of pieces sold. For processing paints and Paint preparation materials in spray cans are common Propane / butane germ propellant with one pressure of about 4.7 bar (at room temperature) as used in the DE 28 19 635 C2 (corresponds to the preamble of claim 1) is described.

Bei der aus der WO-A-91/14638 bekannten Sprühdose sollen dagegen umweltfreundliche Treibgase verwendet werden, die ein ökonomisches Austragen des Wirkstoffes in der Sprühdose ermöglichen. Dabei sollen ausdrücklich Kohlenwasserstoffe wie Propan, Butan oder Isobutan oder andere organischen Verbindungen, wie beispielsweise Dimethyläther, als Treibmittel ausgenommen werden, da bei diesen im Gemisch mit Luft hochexplosive Verbindungen entstehen, die als Schadstoffe gelten.In the spray can known from WO-A-91/14638 on the other hand, environmentally friendly propellant gases are used, the one Economical discharge of the active ingredient in the spray can enable. Hydrocarbons such as Propane, butane or isobutane or other organic compounds, such as dimethyl ether, except as a blowing agent be highly explosive when mixed with air Connections are created that are considered pollutants.

Sprühdosen für Lacke und Lackiervorbereitungsmaterialien werden überwiegend im Do-it-yourself-Bereich für die Autoreparatur-Lackierung verwendet. Im handwerklichen Bereich oder in der industriellen Serienlackierung erfolgt die Beschichtung üblicherweise durch Druckluft-, Airless-, luftunterstützte Airless- oder elektrostatische Zerstäubung (siehe E. Springmann, "Farbspritzen-Beschichtungstechnik heute" in der Fachzeitschrift "Farben + Lacke"). In der handwerklichen oder industriellen Autoreparatur-Lackierung werden dabei entweder Niederdruck-Farbspritzgeräte oder Hochdruck-Farbspritzgeräte verwendet. Bei dem Hochdruck-Spritzen handelt es sich um das am meisten verbreitete Lackierverfahren. Auch wenn dabei die Qualität der Oberfläche bei der Serienlackierung in der Automobil-Industrie oder bei Reparaturlackierungen den gewünschten Anforderungen entspricht, muß bedacht werden, daß dieses Lackierverfahren den größten "Overspray" hat und nur einen Auftragswirkungsgrad von etwa 30% bis 50% erreicht.Spray cans for paints and paint preparation materials are mainly in the do-it-yourself area for car repair painting used. In the craft sector or in The industrial serial painting is followed by the coating usually by compressed air, airless, air-assisted Airless or electrostatic atomization (see E. Springmann, "Paint spray coating technology today" in the Trade magazine "Farben + Lacke"). In the craft or industrial auto repair paint jobs are either Low pressure paint sprayers or high pressure paint sprayers used. The high-pressure spraying is that most common painting processes. Even if the Quality of the surface in the series painting in the Automotive industry or for refinishing meets the desired requirements, it must be borne in mind that this painting process has the biggest "overspray" and only achieved an order efficiency of around 30% to 50%.

Während beim Hochdruck-Spritzen die Druckluft-Zerstäubung mit Drücken von 1,5 bis 5 bar erfolgt, erfolgt die Zerstäubung des Lackmaterials beim Niederdruck-Spritzen bei Drücken im Bereich von 0,7 bis 1,0 bar. Dieses Niederdruck-Spritzverfahren benötigt hohe Luftvolumina, die u.a. mit Gebläsen erzeugt werden. Da in bestimmten Staaten der U.S.A. für Farbspritzarbeiten der Zerstäuberdruck auf 0,7 bar begrenzt sein muß und gleichzeitig ein Auftragswirkungsgrad von mindestens 65% gefordert wird, wurden in jüngster Zeit Farbspritzgeräte entwickelt, die unter der Bezeichnung HVLP (= High Volume Low Pressure) auf den Markt gebracht wurden. Gegenüber der konventionellen Druckluftzerstäubung mit 3,5 bis 4 bar hat das Niederdruck-Spritzen den Vorteil, daß Farbnebel ("Overspray") weitgehend vermieden werden und damit eine hohe Materialausbeute sowie ein wesentlich verbesserter Auftragswirkungsgrad erzielt wird.While with high pressure spraying the compressed air atomization Pressures from 1.5 to 5 bar, the atomization of the Paint material for low pressure spraying at pressures in the area from 0.7 to 1.0 bar. This low pressure spraying process requires high air volumes, which include generated with blowers become. Because in certain U.S. states for paint spraying the atomizer pressure must be limited to 0.7 bar and at the same time an order efficiency of at least 65% paint spraying devices have been requested recently developed under the name HVLP (= High Volume Low Pressure) were brought onto the market. Opposite the conventional compressed air atomization with 3.5 to 4 bar has that Low pressure spraying has the advantage that paint overspray largely avoided and thus a high material yield as well as a significantly improved order efficiency is achieved.

Herkömmliche Sprühdosen werden wegen ihrer geringen Lackausbringmenge und dem stark ungleichmäßigen Lackauftrag von professionellen Anwendern wie Autoreparaturwerkstätten oder in der industriellen Serienlackierung nur in sehr geringem Umfang verwendet, sondern vorwiegend im Do-it-yourself-Bereich.Conventional spray cans are used because of their small amount of paint and the very uneven paint application from professional users such as car repair shops or in industrial serial painting only in very little Scope used, but mainly in the do-it-yourself area.

Aufgabe der vorliegenden Erfindung ist daher, eine Sprühdose der eingangs genannten Art so zu gestalten, daß sowohl der Auftragswirkungsgrad und die Arbeitsgeschwindigkeit der Sprühdose, als auch das Ergebnis von Lackverlauf und Lackstand vergleichbar sind dem einer HVLP-Spritzpistole.The object of the present invention is therefore a spray can of the type mentioned so that both the Order efficiency and the working speed of the Spray can, as well as the result of the paint flow and paint level are comparable to that of an HVLP spray gun.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Ausbringung in Form einer Breitstrahlzerstäubung derart erfolgt, daß die Ausbringmenge des Lacks und Lackiervorbereitungsmaterials bei ununterbrochener Ausbringung 15 g bis 35 g pro 10 Sekunden beträgt. This object is achieved in that the Application in the form of a wide jet atomization is carried out that the application rate of the paint and paint preparation material with continuous application 15 g to Is 35 g per 10 seconds.

Mit dieser Lösung wird eine Sprühdose geschaffen, die aufgrund höherer Ausbringungsmengen zur Verwendung im professionellen Bereich geeignet sind, insbesondere zur Verarbeitung von Lacken und Lackiervorbereitungsmaterialien bei professionellen Autolackierern. Wie Meßergebnisse zeigen, ist der Auftragswirkungsgrad der erfindungsgemäßen Lacksprühdose vergleichbar oder besser dem einer modernen HVLP-Lackspritzpistole. Durch die Ausbringung des Lackmaterials in Form einer Breitstrahlzerstäubung wird eine Arbeitsgeschwindigkeit ermöglicht, die der Arbeitsgeschwindigkeit einer Spritzpistole nahekommt. Außerdem ist die Verteilung der Lackpartikel durch den erhöhten Druck in Verbindung mit der Breitstrahlzerstäubung so fein, daß Verlauf und Lackstand vergleichbare Ergebnisse wie bei Einsatz einer Spritzpistole bringen. Für andere Anwendungsbereiche ist die Verwendung von Breitstrahldüsen bereits bekannt. So wird in der US 4,401,271 eine Verbesserung des Newman-Green-Ventils "3M" beschrieben, das jedoch für Sprühanwendungen von hochviskosen Produkten mit hohem Festkörpergehalt verwendet wird. Diese Breitstrahldüse ist für den Einsatz in Lacksprühdosen völlig ungeeignet, da sich damit z.B. ein Kotflügel nicht gleichmäßig lackieren läßt.This solution creates a spray can that due to higher application rates for use in professional area, especially for Processing of paints and paint preparation materials for professional car painters. As measurement results show is the application efficiency of the spray can according to the invention comparable or better than that of a modern HVLP spray gun. By applying the paint material in A wide-angle atomization becomes a working speed enables the working speed of a Spray gun comes close. In addition, the distribution of the Paint particles due to the increased pressure in connection with the Wide jet atomization so fine that flow and paint level comparable results as when using a spray gun bring. For other areas of application, the use of Wide jet nozzles already known. In US 4,401,271 described an improvement to the Newman Green valve "3M", however, for spray applications of highly viscous products high solids content is used. This wide jet nozzle is completely unsuitable for use in paint spray cans because e.g. do not paint a fender evenly leaves.

Gemäß einer bevorzugten Ausgestaltung der Erfindung beträgt der Druck in der Sprühdose 5,0 bis 5,5 bar. Die Ausbringmenge des Lackmaterials kann bei ununterbrochener Ausbringung dabei vorteilhafterweise 18 g bis 28 g pro 10 Sekunden betragen.According to a preferred embodiment of the invention the pressure in the spray can is 5.0 to 5.5 bar. The application rate of the paint material can be applied continuously advantageously be 18 g to 28 g per 10 seconds.

Beträgt der Druck in der Sprühdose bei einer besonders vorteilhaften Ausgestaltung der Erfindung 5,2 bar, läßt sich die Ausbringmenge des Lackes von üblicherweise ca. 10 g innerhalb von 10 Sekunden bei herkömmlichen Sprühdosen, die über einen Druck von 3,5 bis 3,6 bar verfügen, auf etwa 20 g bis 24 g in der gleichen Zeiteinheit steigern. Dies geht erfindungsgemäß einher mit einem gegenüber einer herkömmlichen Spritzpistole erhöhten Auftragungswirkungsgrad. Dieser beruht im wesentlichen darauf, daß bei der erfindungsgemäßen Sprühdose keine Druckluft verwendet wird, während bei Spritzpistolen das zu versprühende Material einem pneumatischen Druck ausgesetzt wird, der einen Farbnebel erzeugt und darüber hinaus einen Luftrückprall vor dem Werkstück verursacht, so daß die anfliegenden Lackpartikel zum Teil zurückgeworfen werden. Dieser Effekt wird als "Overspray" bezeichnet.Is the pressure in the spray can at one particularly advantageous embodiment of the invention, 5.2 bar, can the application rate of the varnish is usually about 10 g within 10 seconds with conventional spray cans that have a pressure of 3.5 to 3.6 bar, to about 20 g Increase to 24 g in the same time unit. This is possible according to the invention along with a conventional one Spray gun increased application efficiency. This is based essentially that the spray can according to the invention no compressed air is used while using spray guns the material to be sprayed under a pneumatic pressure exposed that creates a mist of paint and above causes an air rebound in front of the workpiece, so that the incoming paint particles in part be thrown back. This effect is called "overspray" designated.

Die gegenüber herkömmlichen Sprühdosen gewünschte Druckerhöhung läßt sich bei einer Ausgestaltung der erfindungsgemäßen Sprühdose dadurch erreichen, daß dem bekannten Propan-Butan-Gemisch, das einen Druck von etwa 4,2 bar bei 20°C erzeugt, ein zusätzlicher Anteil Propan bis zu einer Menge beigemischt wird, bei der der Druck in der Sprühdose den gewünschten Wert erreicht. Ein Druck von etwa 5,2 bar läßt sich erfindungsgemäß dadurch erreichen, daß das Treibgasgemisch zu 72% aus dem bekannten Propan-Butan-Gemisch mit einem Druck von 4,2 bar bei 20°C und zu 28% aus Propan mit einem Druck von 9,1 bar bei 20° C besteht.The desired pressure increase compared to conventional spray cans can be in an embodiment of the invention Achieve the spray can by using the known propane-butane mixture, that a pressure of about 4.2 bar at 20 ° C generates an additional portion of propane up to an amount is mixed in, at which the pressure in the spray can desired value reached. A pressure of about 5.2 bar leaves can be achieved according to the invention in that the propellant gas mixture 72% from the known propane-butane mixture with a Pressure of 4.2 bar at 20 ° C and 28% propane with a Pressure of 9.1 bar at 20 ° C.

Durch die Ausbringung des Lackmaterials in Form einer Breitstrahlzerstäubung läßt sich die erhöhte Lackausbringmenge mit homogener Verteilung der Lackpartikel in einem der Spritzpistole nachempfundenen ellipsenförmigen Spritzbild wesentlich gleichmäßiger zerstäuben als die herkömmliche Rundstrahldüse. Damit wird eine optimale Verarbeitung der Lackmaterialien ermöglicht.By applying the paint material in the form of a The increased paint application rate can be sprayed with a wide jet with homogeneous distribution of the paint particles in one of the Spray gun modeled on elliptical spray pattern atomize much more evenly than the conventional one Round nozzle. This ensures optimal processing of the Enables paint materials.

Weitere Merkmale, Vorteile und Anwendungsmöglichkeiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Beispielen der Erfindung im Vergleich zum bekannten Fachwissen.Other features, advantages and possible uses of the Invention result from the following description of Examples of the invention in comparison to the known specialist knowledge.

Beispiel 1:Example 1:

Bekannte Sprühdosen verwenden als Treibgas üblicherweise ein Propan-Butan-Gemisch, bei dem das Verhältnis von Propan zu Butan von 50:50 bis zu 65% Propan und 35% Butan schwankt. Der Druck des Treibgasgemisches Propan/Butan wird dabei vom Hersteller immer exakt auf den gewünschten Wert von 4,2 bar eingestellt. Dies führt zusammen mit dem zu versprühenden Lackmaterial zu einem Druck in der Sprühdose von 3,5 bis 3,6 bar.Known spray cans usually use a propellant gas Propane-butane mixture, in which the ratio of propane to Butane varies from 50:50 to 65% propane and 35% butane. The Pressure of the propane / butane propellant mixture is from Manufacturer always exactly to the desired value of 4.2 bar set. This leads together with that to be sprayed Paint material to a pressure in the spray can from 3.5 to 3.6 bar.

Beispiel 2:Example 2:

Das bei der erfindungsgemäßen Sprühdose verwendete Treibgasgemisch besteht zu 72% aus dem in Beispiel 1 beschriebenen Propan/Butan-Gemisch mit einem Druck von 4,2 bar. 28% des Treibgasgemisches ist reines Propan mit einem Druck von 9,1 bar. Insgesamt ergibt dieses einen Sprühdosen-Druck von 5,2 bar.The propellant gas mixture used in the spray can according to the invention consists of 72% of that described in Example 1 Propane / butane mixture at a pressure of 4.2 bar. 28% of The propellant gas mixture is pure propane with a pressure of 9.1 bar. Overall, this results in a spray can pressure of 5.2 bar.

Dieser in Verbindung mit einer Breitstrahlzerstäubung äußerst vorteilhafte Sprühdosen-Druck muß für jedes Lackmaterial individuell eingestellt werden. So hängt die Materialausbringung entscheidend auch von dem zu verspritzenden Lackmaterial ab. Je höher gefüllt das Lackmaterial ist, d.h. je höher der Feststoffgehalt des verspritzten Lackmaterials ist, desto höher ist der benötigte Druck, um die gewünschte Aussprühmenge zu erreichen.This in connection with a wide jet atomization extremely advantageous spray can pressure must be for every paint material can be set individually. So the material output depends decisive also from the paint material to be sprayed from. The higher the filling material is, i.e. The higher the solids content of the sprayed paint material is the more the higher the pressure required to achieve the desired spray rate to reach.

Durch die Abstimmung der Höhe des Sprühdosen-Druckes auf die Ausbringmenge des Lackmaterials wird ein Auftragswirkungsgrad erreicht, der dem einer modernen HVLP-Lackspritzpistole entspricht. Auch ist die Verteilung der Lackpartikel durch den erhöhten Druck und die Breitstrahlzerstäubung so fein, daß Verlauf und Lackstand vergleichbare Ergebnisse zum Spritzpistoleneinsatz bringen und dies bei vergleichbaren Arbeitsgeschwindigkeiten. Messungen der Schichtdicken zeigen, daß mit der erfindungsgemäßen Sprühdose gegenüber den Spritzpistolen höhere Schichtdicken in gleicher Zeiteinheit erzielbar sind. By adjusting the level of the spray can pressure to the The application rate of the coating material becomes an application efficiency achieved that of a modern HVLP paint spray gun equivalent. Also the distribution of the paint particles through the increased pressure and the wide jet atomization so fine that Course and paint level comparable results for spray gun use bring and this at comparable working speeds. Measurements of the layer thicknesses show that with the spray can according to the invention compared to the spray guns higher layer thicknesses can be achieved in the same time unit.

Als Lackmaterialien wurden unterschiedliche Lackmaterialien wie Basislacke, Klarlacke, Decklacke, sowie Spritzspachtel, Korrosionsschutzmittel, Kunststoffhaftvermittler u.a. eingesetzt. Different paint materials were used as paint materials such as basecoats, clearcoats, topcoats, and spray fillers, Corrosion protection agents, plastic adhesion promoters, etc. used.

Die wesentlichen Vorteile der mit der erfindungsgemäßen Sprühdose anwendbaren neuen Sprühtechnik gegenüber den Spritztechniken liegen in einer Materialersparnis wegen nicht vorhandener Restmengen, nur geringem Sprühnebel, einem hohen Auftragswirkungsgrad und nicht vorhandenen Topfzeiten, in einer Kostenreduzierung wegen geringerer Energiekosten (Luftverbrauch) sowie deutlich geringeren Entsorgungskosten für Lackmaterialien sowie in der Handhabung und Zeitersparnis, da gegenüber der Spritzpistolentechnik keine Rüstzeiten erforderlich sind, keine Reinigung der Spritzpistole notwendig ist, diese ein geringeres Gewicht aufweist und außerdem fertige Lackmischungen verwendet werden können, so daß kein Mischvorgang mehr erforderlich ist.The main advantages of using the invention Spray can applicable new spray technology compared to the Spraying techniques do not result in material savings remaining quantities, only small spray mist, a high Order efficiency and non-existent pot lives, in a cost reduction due to lower energy costs (Air consumption) and significantly lower disposal costs for paint materials as well as in handling and saving time, there are no set-up times compared to the spray gun technology are necessary, no cleaning of the spray gun necessary is, it has a lower weight and also Finished paint mixtures can be used, so that no Mixing process is more required.

Claims (8)

  1. Spray can comprising a paint or a paint preparation material and a propellant, in particular a propellant comprising a propane/butane mixture, the propellant generating a pressure of 4.5 to 6 bar in the spray can thereby enabling the paint or paint material to be sprayed when a valve is opened, characterized in that the paint or paint preparation material is output in the form of a broad-stream atomization such that the output flow rate of the paint and paint preparation material is 15 g to 35 g per 10 seconds for uninterrupted flow.
  2. Spray can according to claim 1, characterized in that the pressure in the spray can is 5.0 to 5.5 bar.
  3. Spray can according to claim 1 or 2, characterized in that the pressure in the spray can is 5.2 bar.
  4. Spray can according to claim 1, characterized in that an additional portion of propane is added to the propane/butane mixture having a pressure of about 4.2 bar at 20°C up to an amount which is sufficient to raise the pressure in the spray can to a desired value.
  5. Spray can according to claim 3 or 4, characterized in that the propellant gas mixture comprises 72% propane/butane mixture having a pressure of 4.2 bar (at 20°C) and 28% propane having a pressure of 9.1 bar such that the pressure in the spray can is approximately 5.2 bar.
  6. Spray can according to claim 1, characterized in that the output flow rate of the paint material is 18 g to 28 g per 10 seconds for uninterrupted flow.
  7. Spray can according to claim 1 or 6, characterized in that the output flow rate of the paint material is 20 g to 24 g per 10 seconds for uninterrupted flow.
  8. Spray can according to claim 1, characterized in that the discharge in form of a broad-stream atomization is effected by means of a low-pressure broad-stream nozzle.
EP97941980A 1996-09-06 1997-09-05 Spraying can Expired - Lifetime EP0925236B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19636221A DE19636221C2 (en) 1996-09-06 1996-09-06 Spray can
DE19636221 1996-09-06
PCT/EP1997/004818 WO1998009887A1 (en) 1996-09-06 1997-09-05 Spraying can

Publications (2)

Publication Number Publication Date
EP0925236A1 EP0925236A1 (en) 1999-06-30
EP0925236B1 true EP0925236B1 (en) 2003-01-15

Family

ID=7804824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97941980A Expired - Lifetime EP0925236B1 (en) 1996-09-06 1997-09-05 Spraying can

Country Status (12)

Country Link
US (1) US5957341A (en)
EP (1) EP0925236B1 (en)
AT (1) ATE231094T1 (en)
AU (1) AU738425B2 (en)
CA (1) CA2264696C (en)
CZ (1) CZ296725B6 (en)
DE (3) DE19636221C2 (en)
ES (1) ES2191196T3 (en)
NO (1) NO320865B1 (en)
PL (1) PL332142A1 (en)
TR (1) TR199900502T2 (en)
WO (1) WO1998009887A1 (en)

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WO2005051802A1 (en) 2003-11-17 2005-06-09 Peter Kwasny Gmbh Aerosol can

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DE19636221C2 (en) * 1996-09-06 1999-02-04 Peter Kwasny Gmbh Spray can
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Also Published As

Publication number Publication date
ES2191196T3 (en) 2003-09-01
NO991075D0 (en) 1999-03-04
WO1998009887A1 (en) 1998-03-12
US5957341A (en) 1999-09-28
DE29617635U1 (en) 1996-12-12
AU738425B2 (en) 2001-09-20
PL332142A1 (en) 1999-08-30
DE19636221A1 (en) 1998-03-12
CA2264696C (en) 2004-08-03
EP0925236A1 (en) 1999-06-30
TR199900502T2 (en) 1999-07-21
ATE231094T1 (en) 2003-02-15
CZ296725B6 (en) 2006-05-17
DE59709163D1 (en) 2003-02-20
NO991075L (en) 1999-04-20
DE19636221C2 (en) 1999-02-04
CA2264696A1 (en) 1998-03-12
AU4382397A (en) 1998-03-26
NO320865B1 (en) 2006-02-06
CZ74799A3 (en) 1999-11-17

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