EP2552806B1 - Spray can comprising a spray head having an adjustable abutment element - Google Patents

Description

The invention relates to a spray can according to the preamble of claim 1.

Platelet-shaped metal pigments have also been marketed in the form of aerosols for many years. This has the advantage over conventional painting with the aid of a paint gun that the platelet-shaped metal pigments can be applied locally to the substrate. For example, the use of aerosols is standard in automotive refinish. Since the platelet-shaped metal pigments are high-quality pigments, such aerosols are relatively expensive.

Compared to conventionally painted platelet-shaped metal pigments, the metal pigments applied from spray cans as aerosols have the disadvantage that they are less well oriented. In optical applications, this leads to a less pronounced metallic effect (brilliance, light-dark-flop, opacity) and in particular to increased cloud formation. In the case of zinc flakes as anti-corrosive pigment leads a poorer orientation of the platelets also leads to a reduction in the anti-corrosion properties. This is based on the electrochemical principle of the "sacrificial anode" and a barrier effect of the oxidized pigments. Both mechanisms work optimally with a good orientation of the zinc flakes after application: well-oriented pigments have a maximum high surface contact of the pigments with each other and thus a particularly good electrical conductivity. This is a prerequisite for optimal oxidation of the pigments. Well-oriented zinc flakes can also provide optimal barrier effect as they allow the least interstitial space between them.

Another aspect is the simple dosage of aerosol application.

The DE 43 03 157 A1 discloses an actuator for the dosing of a pressure vessel. Here, the adjustment path of the confirmation lever is limited by an adjustable stop.

The DE 35 30 611 C2 discloses a nebulizer, which allows a continuous control of the discharge amount of an aerosol, wherein a rod as a passage means has at least two outlet openings, which are spaced apart in the axial direction of the rod.

The DE 20 2008 009 601 U1 discloses a spray head with a rotatable actuator for regulating the spray characteristics of the spray head. The actuator pivots different sized outlet openings in front of a spray nozzle.

The DE 20 2005 007 242 U1 discloses a spray can with a spray head, which is associated with a rotatable adjusting element for influencing the flow of Sprühguts, wherein the adjusting element has a plurality of sub-paths which are pivotable in the flow path and have different sized outlet openings.

The DE 42 23 611 A1 describes an adjustable valve assembly for pressurized sprayable media, wherein the flow area of the valve assembly is variable by rotation of a spray body.

The invention has for its object to provide a spray of the type mentioned, which has a spray head with an improved over the prior art device for adjustable limitation of the exiting the nozzle volume flow.

This object is achieved by the invention with the subject matter of patent claim 1.

• in dem Druckbehälter ein mittels eines Inertgases unter Druck stehendes Sprühgut aufgenommen ist;
• der Sprühkopf eine Düse und einen Sprühbetätigungstaster aufweist;
• in dem Sprühkopf ein mit dem Sprühbetätigungstaster zusammenwirkendes Druckstück bewegbar gelagert ist;
• mit dem Druckstück ein Stößelrohr und ein radial anschließendes Düsenrohr bewegungsverbunden und/oder darin starr angeordnet ist;
• an dem freien Ende des Düsenrohrs eine Düse angeordnet ist;
• in dem Druckbehälter eine Ventileinrichtung angeordnet ist;
• die Ventileinrichtung über das Stößelrohr des Druckstücks durch Betätigung des Sprühbetätigungstasters derart betätigbar ist, dass bei geöffneter Ventileinrichtung das Sprühgut über das Stößelrohr und das Düsenrohr der Düse zugeführt wird, um dort auszutreten;
• in oder auf dem Sprühkopf ein mit dem Sprühbetätigungstaster zusammenwirkendes im Wesentlichen stiftförmiges Anschlagelement abgestützt ist;
• das Anschlagelement über eine Verstellhandhabe relativ zum Sprühkopf durch Drehung um seine Längsachse höhenverstellbar ist.

It is a spray can with a pressure vessel and a spray head, wherein

• in the pressure vessel is received by means of an inert gas under pressure Sprühgut;
• the spray head has a nozzle and a spray actuator button;
• in the spray head a cooperating with the Sprühbetätigungstaster pressure piece is movably mounted;
• a ram tube and a radially adjoining nozzle tube are movably connected to the pressure piece and / or arranged rigidly therein;
• at the free end of the nozzle tube, a nozzle is arranged;
• in the pressure vessel, a valve device is arranged;
• the valve device can be actuated via the ram tube of the pressure piece by actuation of the spray actuation button such that, when the valve device is open, the spray material is supplied to the nozzle via the ram tube and the nozzle tube in order to emerge there;
• a substantially pin-shaped abutment element cooperating with the spray actuation button is supported in or on the spray head;
• the stop element is height adjustable by means of an adjusting handle relative to the spray head by rotation about its longitudinal axis.

The design of the adjustment of the stop element determines the adjustability of the limitation of the exiting the nozzle flow rate significantly. For this so crucial for the solution of the task design of the adjustment of the stop element, the invention provides four alternative solutions, which are specified in claim 1 with the alternative features a), b), c) and d). These four alternative solutions always agree with each other that the height adjustment of the stop element takes place by a type of cam gear with a supported on a rising guide surface radial pin. This concept enables a robust reliable support of the stop element in its respective adjusted height position. Furthermore, each result in cleaning benefits at the same time. Any deposits of Sprühguts, for example, aerosol deposits can be relatively easily removed in the construction according to the invention. It is also advantageous that the adjustability can be made tailor-made in a simple manner by the design of the guide curve for the application.

The alternative solution a) of claim 1 provides that the stop element has a radially projecting pin-shaped or nose-shaped projection which is supported with at least a portion of its radial extension resting on a radial counter-surface, which is formed as a rising guide surface on a guide surface element on which the projection is guided resting upon rotation of the stop element.

This alternative solution a) provides particular advantages in that the guide surface element can also form a bearing for the stop element.

The alternative solution b) of claim 1 provides that the stop element has an anti-rotation and a radially projecting pin-shaped or nose-shaped projection which is supported with at least a portion of its radial extension resting on a radial mating surface which is formed as a rising guide surface on a guide surface element on which the projection is guided resting upon rotation of the guide surface element.

This alternative solution b) provides particular advantages in that the guide surface element is easily replaceable, so that a spray can with several adjustment characteristics can be delivered.

The alternative solution c) of claim 1 provides that the stop element is movement-connected with a guide surface element, wherein the guide surface element on a bearing element upon rotation of the guide surface element height adjustable is guided and the bearing element has a radially projecting pin-shaped or nose-shaped projection which is supported with at least a portion of its radial extent resting on a radial counter-surface, which is formed as an increasing guide surface on the guide surface element.

This alternative solution c) provides the same advantages as described for solution variant b).

The alternative solution d) of claim 1 provides that the stop element is motion-connected with a guide surface element having an anti-rotation, wherein the guide surface element is guided vertically adjustable on a bearing element upon rotation of the bearing element and the bearing element has a radially projecting pin-shaped or nose-shaped projection, the is supported with at least a portion of its radial extent resting on a radial mating surface, which is formed as an increasing guide surface on the guide surface element

This alternative solution d) provides the same advantages as described for solution variant b).

It can be provided that the guide surface is formed on a surface of a ramp forming the guide surface element.

It can further be provided that the guide surface in a sliding recess of a trained as the guide surface element Slotted element is formed.

The guide surface may be formed at least in sections with a constant pitch.

But it can also be provided that the guide surface is at least partially formed with non-constant pitch. In this way, for example, areas may be formed in which a particularly sensitive adjustment of the stop height is possible.

Furthermore, the guide surface can have, at least in sections, at least one plateau region.

It can be provided that the radially projecting projection is formed as a plugged into the stop element or the bearing element fixed radial pin.

The radially projecting projection may be formed integrally with the stop element or the bearing element.

The adjusting handle may be formed as a radially projecting from the stop element or the bearing element or the guide surface element actuating arm.

The actuator arm can be connected in a torsionally rigid manner with the stop element or the bearing element or the guide surface element.

In an advantageous embodiment of the actuating arm may be formed integrally with the stop element or the bearing element or the guide surface element.

It can be provided that the actuating arm protrudes radially beyond the contour of the spray actuating button.

It may further be provided that the spray head has a Sprühkopfgestell, is connected to the spray head with the pressure vessel, wherein the actuating arm protrudes radially beyond the contour of the Sprühbetätigungstasters, but does not protrude radially beyond the contour of the Sprühkopfgestells. In this embodiment, the actuator arm is optimally protected against damage, such as the fall of the spray can.

However, it can also be provided that the spray head has a Sprühkopfgestell, with which the spray head is connected to the pressure vessel, wherein the actuating arm projects beyond the contour of the Sprühkopfgestells radially. In this embodiment, the actuator arm is optimally accessible, even when using protective gloves.

It can be provided that the rotational position of the actuating arm can be read on a scale. The scale may have a graduation. The scale can also be provided to apply individual markings. It may expediently have a slightly roughened surface in this case in order to facilitate the permanent adhesion of the marking.

In an advantageous embodiment, the scale may be arranged on the spray head.

It can be provided that the actuating arm is adjustable in an angular range of 90 ° to 270 °, particularly preferably 150 ° - 190 °.

The spray head can be screwed onto a central attachment portion of a valve device of the spray can. As a result, the spray head is mechanically very well stabilized and also withstands robust handling. A mechanically stable spray head allows a higher complete emptying of the spray. Otherwise, spray cans which have become unusable due to defective spray heads, such as, for example, shaky or loose spray heads and / or spray heads damaged by the fall of the spray can, have been thrown away. Especially with expensive spraying this leads to an unnecessary and wasteful waste.

It can advantageously be provided that the valve device has a "female" valve. A "female" valve is a valve which is not formed with a protruding valve stem, but with a valve seat arranged in a recess.

The spray head can engage around the valve device with its lower section. By this design, the connection between the spray head and the valve device against impact stress or the like is well protected.

1. a) plättchenförmige Metalleffektpigmente
2. b) Wasser und/oder organische/s Lösemittel
3. c) Bindemittel
4. d) Treibgas.

It can be provided that the aerosol is filled with an aerosol comprising the following components:

1. a) platelet-shaped metallic effect pigments
2. b) water and / or organic / s solvents
3. c) binders
4. d) propellant.

The proposed spray can as described above, be formed.

The platelet-shaped metal pigments usually have an average size (d50) of from 3 to 50 μm, preferably from 5 to 25 μm.

In particular, in a preferred embodiment in which the spray head can be screwed onto a central attachment portion of a valve device of the spray can, there is a further advantage: aerosols containing platelet-shaped metal pigments often result due to the relatively large dimensions of the platelet-shaped metal pigments in the prior art a blockage of the spray head. This in turn means that the contents of the can can not be emptied.
In the preferred embodiment of the invention, the spray head can be unscrewed after a blockage and cleaned, for example, a cleaning aerosol. This measure also contributes to a more economical use of pigments pigmented with aerosols.

1. a) 2,5 - 30 Gew.-% plättchenförmige Metallpigmente,
2. b) 10 - 50 Gew.-% organische/s Lösemittel,
3. c) 5 - 20 Gew.-% Bindemittel,
4. d) 15 - 50 Gew.-% Treibgas,

wobei sich die Gewichtsangaben jeweils auf das Gesamtgewicht des Aerosols beziehen.The aerosol may preferably have the following composition:

1. a) 2.5-30% by weight of platelet-shaped metal pigments,
2. b) 10 to 50% by weight of organic solvent,
3. c) 5-20% by weight of binder,
4. d) 15-50% by weight of propellant gas,

wherein the weights are in each case based on the total weight of the aerosol.

The platelet-shaped metallic effect pigments are preferably taken from the group consisting of aluminum pigments, zinc pigments, brass pigments, copper pigments, stainless-steel pigments or mixtures thereof. Particular preference is given to using aluminum pigments or zinc pigments or mixtures of these pigments.

Platelet-shaped zinc pigments are used for corrosion protection. Even in this case, however, an attractive appearance can be advantageous. Therefore, better orientation of the pigments, in addition to improved corrosion protection, also contributes to improved optical properties such as brilliance, light-dark-flop, and less cloudiness.

In the case of platelet-shaped zinc pigments, preference is given to using 8-25% by weight and more preferably 10 to 20% by weight, based on the total weight of the aerosol.

In the case of platelet-shaped aluminum pigments, a smaller proportion tends to be used. This is based on the one hand on the lower density of aluminum (compared to zinc, stainless steel, copper, brass) and on the other hand, that in optical applications less than in the anti-corrosion pigmentation. Thus, the proportion of the platelet-shaped aluminum pigments is preferably 2.5 to 20 wt .-% and particularly preferably 5 to 15 wt .-%, based on the total weight of the aerosol.

In the case of platelet-shaped stainless steel, copper or brass pigments, preference is given to using from 2.5 to 25% by weight and more preferably from 8 to 20% by weight, based on the total weight of the aerosol.

The organic solvents may be taken from the group consisting of aromatics, aliphatics, esters, ketones, alcohols, and mixtures thereof.

As aromatics solvent naphtha and / or xylene may be provided.

As aliphatics, white spirit and / or high-boiling aliphatics may be provided.

As esters, ethyl acetate and / or butyl acetate may be provided.

Acetone and / or methyl ethyl ketone may be provided as ketones.

As alcohols, n-butanol and / or isopropanol can be provided.

The binders may be taken from the group consisting of alkyd resin, acrylate resin, vinyl isobutyl ether, 1K or 2K polyurethane resin, hydrocarbon resin, silicone resin, cellulosic resin, 2K epoxy resins, modified rubber resins, urea resins, polyvinyl chloride copolymer resins, and mixtures thereof , Particularly preferred are alkyd resins and acrylate resins.

As the alkyd resin, there are used, for example, styrenated alkyd resin, urethane alkyds, ricinoleic alkyds, short oily alkyd resin, phthalate-modified alkyd resin, linseed oil alkyd resin, phenol resin-modified alkyd resin, acrylic-modified alkyd resin, silicone resin-modified alkyd resins, soybean oil-modified alkyd resin.

As acrylate resins, for example, thermoplastic butyl methacrylate, thermoplastic methyl acrylate acrylate resin or thermoplastic butyl methacrylate / methyl methacrylate acrylate resin are used.

The propellant gases may be taken from the group consisting of propane, butane, dimethyl ether, N ₂ , CO ₂ , compressed air and mixtures thereof. Particularly preferred are propane, butane and mixtures thereof.

The aerosol may contain other components which are taken from the group consisting of additives, fillers, desiccants and mixtures thereof.

The additives may be taken from the group consisting of antisettling additives, wetting agents, thixotropic agents, leveling agents, corrosion inhibitors, molecular sieves (water scavengers) and mixtures thereof.

The fillers may be taken from the group consisting of calcium carbonate, calcium oxide, magnesium oxide, silica, quartz, kaolin, mica, shale, magnesium carbonate, talc, silicic acid, zinc oxide, zinc sulfide, barium sulfate / lithopone, barium borate, zinc phosphate and mixtures thereof. Particularly preferred here is calcium carbonate, calcium oxide, quartz powder and mixtures thereof.

Fig. 1a

ein erstes Ausführungsbeispiel der erfindungsgemäßen Sprühdose in perspektivischer Ansicht, eingestellt auf minimalen Durchfluss;

Fig. 1b

die Sprühdose in Fig. 1 a, eingestellt auf maximalen Durchfluss;

Fig. 2a

die Sprühdose in Fig. 1a in der Draufsicht;

Fig. 2b

die Sprühdose in Fig. 1b in der Draufsicht;

Fig. 3a

eine Teilschnittansicht längs der Schnittlinie Illa-Illa in Fig. 2a;

Fig. 3b

eine Teilschnittansicht längs der Schnittlinie Illb-Illb in Fig. 2b;

Fig. 4a

eine Teilseitenansicht in der in Fig. 3a angegebenen Blickrichtung IVa;

Fig. 4b

eine Teilseitenansicht in der in Fig. 3b angegebenen Blickrichtung IVb;

Fig. 5

eine Einzelheit aus Fig. 4b in vergrößerter Ansicht;

Fig. 6a bis 6c

Drehwinkel-Diagramme zur Verdeutlichung der Höhenverstellung des Anschlagselements in Fig. 3a und 3b;

Fig. 7

ein zweites Ausführungsbeispiel zur Einstellung des Sprühgutdurchsatzes analog Fig. 5;

Fig. 8

ein drittes Ausführungsbeispiel zur Einstellung des Sprühgutdurchsatzes analog Fig. 5;

Fig. 9

ein viertes Ausführungsbeispiel zur Einstellung des Sprühgutdurchsatzes analog Fig. 5.

The invention will now be explained in more detail with reference to exemplary embodiments. Show it

Fig. 1a

a first embodiment of the spray can according to the invention in a perspective view, set to minimum flow;

Fig. 1b

the spray can in Fig. 1 a set to maximum flow;

Fig. 2a

the spray can in Fig. 1a in the plan view;

Fig. 2b

the spray can in Fig. 1b in the plan view;

Fig. 3a

a partial sectional view along the section line Illa-Illa in Fig. 2a ;

Fig. 3b

a partial sectional view along the section line Illb-Illb in Fig. 2b ;

Fig. 4a

a partial page view in the in Fig. 3a indicated viewing direction IVa;

Fig. 4b

a partial page view in the in Fig. 3b indicated viewing direction IVb;

Fig. 5

a detail Fig. 4b in enlarged view;

Fig. 6a to 6c

Rotation angle diagrams to illustrate the height adjustment of the stop element in Fig. 3a and 3b ;

Fig. 7

a second embodiment for adjusting the Sprühgutdurchsatzes analog Fig. 5 ;

Fig. 8

a third embodiment for adjusting the Sprühgutdurchsatzes analog Fig. 5 ;

Fig. 9

a fourth embodiment for adjusting the Sprühgutdurchsatzes analog Fig. 5 ,

The FIGS. 1 to 4 show a spray can 1 with a can-shaped pressure vessel 11, hereinafter also referred to as a can, and a spray head 12, which is intended to receive a pressurized gas by means of a propellant ( Fig. 1 ).

As the Figures 3 show, the spray head 12 is arranged on a valve means 111 of the pressure vessel 11. The spray head 12 has a Sprühkopfgestell 121 on which further elements are mounted, as described below.

The spray head frame 121 has a central fastening section with an internal thread, which is screwed onto a central fastening section 121b formed on the valve device 111. By the screwing of the spray head 12 is a very reliable connection between the spray head 12 and the pressure vessel 11 made, which withstands rough operation use. The valve device 111 is connected in a gastight manner in the usual manner by crimping with the pressure vessel 11. The spray head frame 121 has a cup-shaped outer portion which engages over the valve means 111 together with the upper edge of the can.

The valve device 111 has a "female" valve, i. H. a valve which is not formed with a protruding valve stem, but with a valve seat arranged in a recess.

A cylindrical pressure piece 122 is mounted linearly movable in the spray head frame 121. The direction of movement is along the can axis 11a. The pressure piece 122 cooperates with its end facing away from the valve means 111 with a Sprühbetätigungstaster 123, which is designed as a one-armed lever which is mounted by means of a bearing pin 1231 in a fork-shaped bearing portion of the Sprühkopfgestells 121. With the pressure piece 122, a plunger tube 122s and a radially adjoining nozzle tube 122d are motion-connected. The plunger tube 122s and the nozzle tube 122d in the pressure piece 122 are rigidly arranged. In a preferred embodiment, the nozzle tube, ram tube and pressure piece are integrally formed as a plastic injection molded part. The plunger tube 122s may have an inner diameter of 1 to 1.4 mm, preferably 1.2 mm. The nozzle tube 122d may have an exit diameter of 0.4 to 0.6 mm, preferably 0.5 mm. Diameter. The spray material is supplied via a supply hose 111s, which is attached to a tubular inlet nozzle of the valve and the inlet rests on the bottom of the pressure vessel 11 is supplied.

By pushing down the spray actuation button 123 - ie pivot about its axis of rotation Fig. 3 clockwise - presses in the can axis 11a acting plunger tube 122s the spring-loaded valve seat of the valve device 111 into the valve means, so that an annular gap is formed around the valve seat, through which in the pressure vessel 11 under gas pressure Sprühgut past the valve seat by a in the the lower portion of the plunger tube 122s introduced slot into the interior of the plunger tube 122 s and from there into the perpendicular to the plunger tube 122 s arranged nozzle tube 122 d, which is closed by a nozzle 124. In the nozzle 124, the sprayed material is atomized. Depending on the degree of depression of the Sprühbetätigungstasters 123 a more or less large flow rate of the Sprühguts is set. In the in the Fig. 1 to 4 illustrated embodiment, the nozzle 124 has a slot-shaped outlet, so that a fan-shaped flat spray is formed. The nozzle 124 is formed pivotable about its longitudinal axis by 90 °.

The path of the spray actuation button 123 is limited by a cylindrical height-adjustable stop element 125. In the upper position of the stop element 125, a minimum flow of Sprühguts is provided (see Fig. 1a . 2a . 3a . 4a ), in the lower position of the stop element 125 a maximum flow of Sprühguts is provided (see Fig. 1b . 2 B . 3b . 4b ).

The stop element 125 has in its lower portion a radially projecting guide pin 125s, which is supported with a part of its radial extent resting on a radial counter-surface, which is formed as a rising guide surface 127f on a guide surface element 127. In the in the Fig. 1 to 4 illustrated embodiment, the guide surface 127f is formed as a gate guide groove of a link element. The guide surface 127f may preferably cover an angle range α of 90 ° to 270 °, preferably of 150 ° to 190 °, wherein the guide surface 127f designed as a slide guide groove also provides end stops for the guide pin 125s. The end stops can be formed by the front ends of the guide groove. The guide surface element 127 can at the same time form a pivot bearing for the stop element 125 and be supported on the spray head frame 121. In an advantageous embodiment, the guide surface element 127 may be formed integrally with the spray head frame 121 ( Fig. 5 ).

The stop element 125 has a radially projecting adjusting handle, which is designed as an actuating arm 126. On the upper side of the spray actuation button 123, a scale 123s is provided, which either offers the possibility of attaching individual markings or already has markings which make it possible to adjust the setting arm 126 in a reproducible manner.

The actuating arm 126 protrudes at least as far as the edge region of the spray head 12 or even beyond, in order to allow a safe adjustment of the maximum flow even with gloves. On the other hand, the actuator arm 126 is protected against damage by the large-area design of the spray head 12, as they may occur, for example, when dropping the spray can. The radial length of the actuating arm 126 may therefore be designed in specific embodiments so that the radial end of the actuating arm 126 on the top view contour of the spray actuator 123 protrudes, but lies within the plan view contour of Sprühkopfgestells.

The FIGS. 6 show on the basis of diagrams h (α) different training possible the guide surface 127f.

Fig. 6a shows a developed guide surface 127f for a linear rotation angle-dependent height adjustment h (α) of the stop element. With this embodiment, a continuous height adjustment of the stop element 125 is possible.

Fig. 6b shows a developed guide surface 127f for a rotational angle-dependent height adjustment h (α) as in Fig. 6a shown, but with the difference that three plateau sections are provided, in which no height adjustment takes place. In these areas, a rest for the actuating arm 126 could be further provided, so that three operating points for the maximum flow are adjustable without visual control.

Fig. 6c shows a developed guide surface 127f for a non-linear height adjustment h (α). With this embodiment, for example, a height adjustment of the stop element 125 is possible, which is particularly sensitive in the beginning and end.

The FIGS. 7 to 9 show further embodiments, with regard to the formation and the interaction of the stop member 125 and of the area guide element 127 differ.

Fig. 7 shows an embodiment in which a surface guide member 127 is rotatably mounted on the Sprühkopfgestell 121 and is rigidly connected to a radially projecting actuator arm 126. A cylindrical stop element 125 is mounted linearly in the surface guide element 127 and connected to a rotation-locking device 128, so that the stop element 125 is only linearly movable. A fixed guide pin 125s penetrating the stop element 125 radially is supported on the surface guide element 127 on a guide surface 127f designed as a guide groove. Upon rotation of the surface guide member 127, the stop member 125 performs a lifting movement h, the in Fig. 7 is symbolized by a guide arrow.

Fig. 8 shows a further embodiment in which a cylindrical bearing element 125I is arranged fixed on the Sprühkopfgestell 121, which is encompassed by a sleeve-shaped surface guide member 127. The surface guide element 127 is rigidly connected to a radially projecting actuator arm 126. The front side of the surface guide element 127 facing away from the spray head frame 121 forms a stop element 125. A guide surface 127f formed on the surface guide element 127 as a guide groove is supported on a fixed guide pin 125s which extends radially through the bearing element 1251. Upon rotation of the surface guide member 127, the stop member 125 performs a lifting movement h, the in Fig. 8 is symbolized by a guide arrow.

Fig. 9 shows a further embodiment in which a cylindrical bearing element 125I is rotatably mounted on the Sprühkopfgestell 121 and is encompassed by a sleeve-shaped surface guide member 127. The rotatable bearing element 125I is rigidly connected to a radially projecting actuator arm 126. The surface guide element 127 is connected to an anti-rotation device 128, so that the surface guide element 127 is only linearly movable. The front side of the surface guide element 127 facing away from the spray head frame 121 forms a stop element 125. A guide surface 127f formed on the surface guide element 127 as a guide groove is supported on a fixed guide pin 125s which extends radially through the bearing element 125I. Upon rotation of the bearing element 125I, the stop element 125 executes a stroke movement h, which in Fig. 9 is symbolized by a guide arrow.

1. a) 2,5 - 30 Gew.-% plättchenförmige Metallpigmente
2. b) 10 - 50 Gew.-% organische/s Lösemittel
3. c) 5 - 20 Gew.-% Bindemittel
4. d) 15 - 50 Gew.-% Treibgas,

wobei sich die Gewichtsangaben jeweils auf das Gesamtgewicht des Aerosols beziehen.The spray can of the embodiment of the figures is preferably provided for receiving an aerosol comprising the following components:

1. a) 2.5-30% by weight of platelet-shaped metal pigments
2. b) 10 to 50% by weight of organic solvent
3. c) 5-20% by weight of binder
4. d) 15-50% by weight of propellant gas,

wherein the weights are in each case based on the total weight of the aerosol.

LIST OF REFERENCE NUMBERS

1

Spray can

11

pressure vessel

11a

can axis

12

spray nozzle

111

valve means

111s

supply hose

121

Sprühkopfgestell

121b

attachment section

122

Pressure piece

123

Sprühbetätigungstaster

123l

bearing pin

123s

scale

124

jet

125

stop element

125l

bearing element

125s

guide pin

126

actuating arm

127

Surface guide element

127f

guide surface

128

anti-rotation

Claims (15)

1. Spray can (1) with a pressure container (11) and a spray head (12), in which

   - a spray product placed under pressure by means of a propellant gas is contained in the pressure container (11);

   - the spray head (12) has a nozzle (124) and a spray operating button (123);

   - a pressure piece (122) co-operating with the spray operating button (123) is mounted in the spray head (12) so as to be displaceable;

   - a plunger tube (122s) and a radially adjoining nozzle tube (122d) is connected to the pressure piece (122) so as to be displaceable therewith and/or is disposed rigidly therein;

   - the nozzle (124) is disposed at the free end of the nozzle tube (122d);

   - a valve unit (111) is disposed in the pressure container (11);

   - the valve unit (111) can be operated via the plunger tube (122s) of the pressure piece (122) by operating the spray operating button (123) so that when the valve unit (111) is opened, the spray product is delivered through the plunger tube (122s) and the nozzle tube (122d) of the nozzle (124), so that it can exit there;

   - an essentially pin-shaped stop element (125) co-operating with the spray operating button (123) is supported in or on the spray head (12);

   - the stop element (125) is height adjustable relative to the spray head (12) by means of an adjusting handle (126),

   characterised in that

   a) the stop element (125) has a radially projecting pin-shaped or lug-shaped projection (125s) which is supported by at least a part of its radial extension so that it lies on a radial co-operating surface which is provided in the form of a rising guide surface (127f) on a guide surface element (127) on which the projection lies in a guided arrangement as the stop element is rotated;
   or

   b) the stop element (125) has an anti-rotation lock (128) and a radially projecting pin-shaped or lug-shaped projection (125s) which is supported by at least a part of its radial extension so that it lies on a radial co-operating surface which is provided in the form of a rising guide surface (127f) on a guide surface element (127), on which the projection lies in a guided arrangement as the guide surface element (127) is rotated;
   or

   c) the stop element (125) is connected to a guide surface element (127) so as to be displaceable therewith and the guide surface element (127) is guided on a bearing element (125l) in a height-adjustable arrangement as the guide surface element (127) is rotated, and the bearing element (125l) has a radially projecting pin-shaped or lug-shaped projection (125s) which is supported so that it lies with at least a part of its radial extension on a radial co-operating surface, which is provided in the form of a rising guide surface (127f) on the guide surface element (127);
   or

   d) the stop element (125) is connected to a guide surface element (127) having an anti-rotation lock (128)so as to be displaceable therewith, and the guide surface element (127) is guided on a bearing element (125l) in a height-adjustable arrangement as the bearing element (125l) is rotated, and the bearing element (125l) has a radially projecting pin-shaped or lug-shaped projection (125s) which is supported so that it lies with at least a part of its radial extension on a radial co-operating surface, which is provided in the form of a rising guide surface (127f) on the guide surface element (127).
2. Spray can as claimed in claim 1,
   characterised in that
   the guide surface (127f) is provided on a surface of a ramp forming the guide surface element (127)
3. Spray can as claimed in claim 1,
   characterised in that
   the guide surface (127f) is disposed in a link recess of a link element constituting the guide surface element (127).
4. Spray can as claimed in one of the preceding claims, characterised in that
   the radially projecting projection is provided in the form of a fixed radial pin (125s) inserted in the stop element (125) or the bearing element (125l).
5. Spray can as claimed in one of claims 1 to 3,
   characterised in that
   the radially projecting projection (125s) is of an integral design with the stop element (125) or the bearing element (125l).
6. Spray can as claimed in one of the preceding claims,
   characterised in that
   the adjusting handle (126) is provided in the form of an actuator arm (126) projecting radially out from the stop element (125) or from the bearing element (125l) or from the guide surface element (127).
7. Spray can as claimed in claim 6,
   characterised in that
   the actuator arm (126) is connected rigidly to the stop element (125) or to the bearing element (125l) or to the guide surface element (127) so as to rotate therewith.
8. Spray can as claimed in claim 7,
   characterised in that
   the actuator arm (126) is of an integral design with the stop element (125) or the bearing element (125l) or the guide surface element (127).
9. Spray can as claimed in one of claims 6 to 8,
   characterised in that
   the actuator arm (126) extends radially out beyond the contour of the spray operating button (123).
10. Spray can as claimed in one of the preceding claims,
    characterised in that
    the spray head (12) has a spray head support frame (121) by means of which the spray head (12) is connected to the pressure container (11), and the actuator arm (126) extends radially out beyond the contour of the spray operating button (123) but does not extend radially out beyond the contour of the spray head support frame (121).
11. Spray can as claimed in one of claims 1 to 9,
    characterised in that
    the spray head (12) has a spray head support frame (121) by means of which the spray head (12) is connected to the pressure container (11), and the actuator arm (126) extends radially out beyond the contour of the spray head support frame (121).
12. Spray can as claimed in one of claims 6 to 11,
    characterised in that
    the rotary position of the actuator arm (126) can be read from a scale (123s).
13. Spray can as claimed in one of claims 6 to 12
    characterised in that
    the actuator arm (126) is displaceable within an angular range of 90° to 270°.
14. Spray can as claimed in one of the preceding claims
    characterised in that
    the spray head (12) can be screwed onto a central fixing portion (121 b) of a valve unit (111) of the spray can (1).
15. Spray can (1) as claimed in one of the preceding claims
    characterised in that
    the spray can (1) is filled with an aerosol comprising the following components:

    a) platelet-shaped metal effect pigments

    b) water and/or organic solvent

    c) binding agent

    d) propellant gas.

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