EP2414103B1 - Disposable container, its utilisation and a method of pressurizing the disposable container - Google Patents

Description

The invention relates to a disposable container, in particular a disposable ink container for receiving and applying a color fluid by spraying, a method for pressurizing such a container and the use of such a container for paint, varnish, glaze, wood preservatives or similar fluids.

Disposable color containers are known from the prior art, for example in the form of aerosol spray cans. In these, a color fluid and a pressurized propellant container are arranged in the can. At the top of the can, a dispensing valve is arranged, upon the actuation of which pressurized color fluid can be sprayed by the propellant via a spray nozzle located on the valve. A disadvantage of such Aerosolsprühdosen is that their sizes or filling volumes are usually limited to 250 ml to 1000 ml. In larger aerosol aerosol cans, the handling is adversely affected or even impossible. If a user wants to apply a correspondingly large amount of paint, he is forced to use several such aerosol spray cans, which must be disposed of or recycled under appropriate environmental impact.

Another problem with high volume disposable paint spray packages is that they can result in pressure loss in the package, loss of propellant in the propellant reservoir, as well as drying or other deterioration of the color fluid unless all the color fluid is consumed in one application.

A disposable container according to the preamble of claim 1 is in document US 1,196,965 disclosed.

Starting from the above-described prior art, the invention is based on the object of providing a disposable container for receiving and discharging a color fluid by means of spraying, that is suitable for fluid volumes of up to 10 liters or more, satisfies a high level of security, especially against a Erstverbrauch sure and can be stored without loss of pressure or propellant, can be stored in the color fluid in particular after a partial consumption for longer periods without loss of quality and continue to be used and which is easy to dispose of and recyclable and easy to handle. Furthermore, the invention has for its object to provide a method by which such a disposable container can be pressurized.

On the device side, the object is achieved by a disposable container, in particular a disposable ink container, for receiving and applying a color fluid by spraying, with a storage volume for the color fluid forming container and a pressure control unit which is connectable to a propellant reservoir, wherein the propellant reservoir on a receiving unit of disposable is arranged or can be arranged, a piercing element for piercing the propellant reservoir is positioned relative to the receiving unit, which piercing element is movable via a user actuated actuator and having a sealing portion with which an introduced by means of the piercing element in the propellant reservoir outlet can be sealed.

The invention makes it possible that the propellant reservoir can be pre-mounted on or in the receiving unit without pressurized propellant can escape from this and the color fluid container would be exposed to a higher pressure before a first use, especially over a longer period. The only unit that must withstand sustained high pressure is the propellant reservoir itself. The remaining units of the disposable package, on the other hand, need only be designed to withstand increased pressure for shorter periods of time. This is particularly advantageous in view of the fact that the container according to the invention is a disposable container in which preferably less high-quality materials than in the case of reusable containers are used. Furthermore, the container can be realized with less material, resulting in resource conservation and cost savings. A container in the sense of the invention is to be understood in particular as a disposable color container.

The arrangement of the propellant reservoir on or in the receiving unit can basically be done in any way. With particular advantage, it is bolted to the receiving unit, so that commercially available gas pressure cartridges can be used as a propellant reservoir. In addition, the propellant reservoir can be connected by latching connection or other positive connection with the receiving unit. With particular advantage, the propellant reservoir is a CO ₂ cartridge. The amount of gas contained in the cartridge or propellant reservoir depends essentially on the internal pressure of the container required for spraying the color fluid and the container volume. Particularly advantageous is the use of a commercially available 38g CO ₂ cartridge together with a 5 liter container. Depending on the spray nozzle used, a container internal pressure between 2.0 bar and 3 bar, preferably 2.5 bar has been found to be particularly advantageous. At a pressure of 2.5 bar 5 Ltr. Color fluid by means of a Commercially available 38g CO ₂ cartridge sprayable. However, these values may vary depending on the color fluid.

Under a color fluid in the context of the present invention, in particular paints, varnishes, wood preservatives, oils, or similar liquids are to be understood, which must be spread as evenly distributed by means of the spray nozzle. It should be noted that spray pressure, nozzle size and viscosity of the color fluid to be sprayed must be coordinated. Depending on the color fluid, other blowing agents can be used instead of CO ₂ . Examples include nitrogen (N ₂ ) or nitrous oxide (laughing gas, N ₂ O).

The receiving unit preferably consists essentially of plastic and may in particular be designed as an injection-molded component. It can be made of other materials or combinations of materials if it has to withstand very high pressures. Preferably, the receiving unit is designed in the form of a housing in which the piercing element is received. It may in particular have a passage opening. In this, the piercing element can advantageously be arranged to be movable in the longitudinal direction of the housing or the passage opening. With the invention is particularly proposed that the piercing element is arranged to be sealingly movable relative to the receiving unit. The seal can be done for example by an arranged between piercing and receiving unit O-ring seal. The receiving unit has in particular in the passage opening according to a further embodiment of the invention, a thread into which the propellant reservoir can be screwed. The propellant reservoir is preferably sealed against the receiving unit. In particular, a shoulder can be formed in the passage opening for this purpose, against which the propellant reservoir sealingly rests when intended arrangement. The receiving unit may be directly or indirectly fluidly connected to the pressure control unit.

The piercing element is preferably made of plastic. On its side facing the propellant reservoir, a piercing tip is formed, which can penetrate the propellant reservoir or a closure element present on the propellant reservoir and can introduce therein an outlet for propellant through which propellant can flow out of the propellant reservoir. The piercing tip may be reinforced for this purpose by, for example, a metal sheath or similar reinforcement. The piercing element is linearly guided on or in the receiving unit in its longitudinal direction, preferably in its passage opening. To this Purpose may correspond to the outer contour of the piercing element of the inner contour of the present in the receiving unit through hole. There is advantageously a slight clearance fit between the piercing element and the receiving unit, so that the piercing element can be moved with sufficient guidance relative to the receiving unit in the longitudinal direction.

The piercing element can be sealed with particular advantage with respect to the receiving unit so as to be resistant to a driving medium. In the case of a piercing element arranged in a through-opening of the receiving unit, a groove can be made in the outer contour of the piercing element or the inner contour of the through-hole, in which a sealing element is arranged which seals the gap between the piercing element and through-hole.

At the side opposite the propellant reservoir side, the piercing element can be connected directly or indirectly with the actuator to be actuated by the user. For this purpose, it may have a thread which cooperates with a corresponding mating thread on the actuator and can cause a linear movement of the piercing element in the passage opening upon rotation of the actuator. In this case, the actuator is rotatable, but arranged fixed in the longitudinal direction of the housing of the receiving unit, while the piercing element rotationally fixed, but is arranged linearly movable in or on the receiving unit. Alternatively, the actuator can be arranged by means of a thread, in particular by means of an internal thread, on the receiving unit, in particular on the housing, while the piercing element is arranged to be movable in the longitudinal direction of the housing. Tapping and actuator are arranged fixed in this case in the longitudinal direction relative to each other, the former need not have threads to cause an adjustment for piercing. For this purpose, an annular groove can be arranged on the piercing element, in which engages a suitable spring of the actuator, or vice versa.

The pressure control unit is arranged in the flow path of the propellant behind the receiving unit and serves to regulate the pressure from the high pressure of the propellant reservoir to the low pressure in the container. It is connected to the high pressure side with the propellant reservoir and the low pressure side with the container and has a transfer member, via which a high-pressure side exhaust valve can be actuated in response to low-pressure side pressure fluctuations. The pressure prevailing in the container can act via a flexible membrane on the transmission member, which closes a low-pressure chamber. The height of the pressure and thus the position of the membrane determine the position of the transmission element through which in turn, the position of the exhaust valve is controlled. According to a particular embodiment, a rocker arm is provided as a transmission member. A low pressure side lever arm of the rocker arm abuts against the flexible diaphragm, while a high pressure side lever arm actuates the exhaust valve. The transfer member can be biased against the membrane with advantage, in particular, the bias can be adjusted by an end user, whereby the height of the settable in the container via the pressure control unit pressure can be determined. The exhaust valve can be biased only on the prevailing pressure on the high pressure side against the transmission member or the rocker arm. As biasing means is advantageously a compression spring of any kind.

The outlet valve preferably has a valve body, in particular made of plastic, which is arranged in a sealing manner in the high-pressure line between the receiving unit and the pressure regulating unit. The high-pressure line may be widened to a valve chamber for this purpose, in which the valve body between a high-pressure line shut-off closed position and the high-pressure line releasing open position is arranged to be movable. A particularly simply designed valve body can be used if the valve chamber is provided at the end with a high-pressure inlet and laterally with an outlet. In this case, the valve body in the closed position sealingly abuts the end-side inlet and moves when it opens from this in its open position, in which it releases the lateral outlet. A surface of the valve body facing the inlet is designed as a sealing surface which sealingly seals the high-pressure inlet in the closed position.

With particular advantage, the membrane is attached to the low-pressure chamber by clamping. It can be clamped in particular via a clamping element with the pressure control unit, which in turn is secured thereto by means of latching projections. This allows a particularly simple installation of the membrane.

The pressure control unit may further comprise a pressure relief valve, by which an excessive pressure load of the container is avoided. It is particularly advantageous if the pressure relief valve is fluidically connected to the low-pressure chamber and opens in the event of overpressure relative to the environment, so that the excess pressure can escape into the atmosphere and does not get into the container. Particularly simple and safe, such a pressure relief valve can be realized by the low pressure chamber is provided with an atmosphere outlet, the pressure medium tight by a spring-loaded closing body of the pressure relief valve is closed. If too high a pressure builds up in the low-pressure chamber, the closing body is lifted off its valve seat against the spring force and releases the outflow opening, so that the overpressure can be reduced.

The color fluid is sprayed with an application device, in particular with a spray gun. The connecting line between the pressure control unit and application device can be arranged with particular advantage over an adapter piece by an end user detachable and wiederanordbar with the fluid container. In this way, the connecting line as well as the possibly existing adapter piece and the application device can be easily cleaned at a partial consumption of the color fluid. In the connecting line or the adapter piece, a check valve or shut-off valve can be arranged, so that the container can be tightly closed before removing the dispensing device or connecting line and the quality of color fluid remaining therein is minimized as little as possible. Although the container according to the invention is a disposable container, so a multiple use in the form of multiple partial emptying is possible.

In a further embodiment, the disposable container has an attachment on or in which the pressure regulating unit and / or the receiving unit is or are arranged. In or on the essay further units may be arranged. In particular, there may be placed the spray gun or a similar device for applying the color fluid and the connecting line between this and the pressure control unit. This advantageously makes it possible to provide containers for large amounts of color fluid as a disposable container, wherein during the spraying of color fluid, the container can be placed on the floor or a corresponding surface and only the spray gun regardless of the container and its weight can be easily operated and handled , When spraying the color fluid, it is not necessary to move the entire container with the color fluid received therein, which considerably simplifies the spraying and dispensing. The delivery device may be formed depending on the shape, size and material of the container. It can therefore be adapted to the anatomy of the hand with greater freedom of design. It is preferably designed as an injection-molded part, so that it can be inexpensively and easily manufactured in the appropriate form with low weight.

The article may advantageously be designed as a plastic component, in particular as a plastic injection molded component according to another proposal. He may according to another proposal of the invention by the end user substantially insoluble be arranged on the container. In this way, tightness, functionality and safety of the disposable container can be maintained. In particular, the attachment with locking elements, for example in the form of a clip connection, may be fastened to the container rim. Additionally or alternatively, attachment by gluing, welding, soldering or similar types of attachment is possible. It is particularly advantageous if the container edge is formed bead-shaped or provided with a fold. At this bead or fold the article can be defined outwardly or inwardly across by means of locking projections or clips. Another way to set the attachment to the container, is that on the opposite side of the container bottom of the container wall, a container lid is provided. The container lid can be formed integrally with the container wall or arranged pressure-tight as a separate element on this in a known manner. Preferably, the container lid is made of the same material as the rest of the container. It may be provided in the middle of a filling opening in the container lid, through which the container on the one hand filled with color fluid and on the other hand color fluid can be removed from the container. The filling opening can now be used with particular advantage to set the article exclusively or in addition to the aforementioned attachment in the same or similar manner on the container edge on the container.

In a further embodiment, a riser can be arranged on the attachment, which protrudes into the container. It can be glued, stuck, screwed or otherwise connected to the essay or be integrally formed with this. Preferably, the riser can be fluidly connected to the connecting line and be adapted to receive color fluid from a region as close to the bottom of the container and to promote the spray gun. With particular advantage, the container bottom may be curved, so that a deepest point of the container is formed centrally or edge. The riser ends preferably in this lowest point or in its vicinity, so that an almost complete emptying of the disposable container is possible.

According to a further proposal, the riser pipe can project through the filling opening into the storage volume. Alternatively, a separate opening in the container may be provided for the riser. Between the riser opening or filling opening, a sealing plug, preferably made of rubber, can be arranged between riser pipe and the edge of the container surrounding the opening, which seals the gap between riser pipe and opening edge in a fluid-tight and pressure-tight manner. It is particularly useful in terms of manufacturing, when the sealing plug is fixedly arranged on the riser pipe or connected thereto. In particular, the sealing plug with glued to the riser or molded on this. Thus, in a proper arrangement of the attachment to the container, the riser pipe can be arranged together with the sealing plug in a single operation in a sealing manner in the container opening. Likewise, the sealing plug can initially be arranged in the container opening in the intended manner and, where appropriate, held there by positive locking, adhesion, molding or gluing. In this case, the riser is introduced when arranging the attachment in the sealing plug and possibly glued. With particular advantage, the riser, in addition to the promotion of the color fluid from the container at the same time fulfills the further function of feeding the propellant into the storage volume.

The cap closing the container, in addition to its function as a closure of the container at the same time perform other tasks, such as some or all necessary for a removal of the color fluid units such as pressure control unit, propellant reservoir, riser, connecting line, application device and possibly provided safety and shut-off valves wear. The basic shape of the attachment can advantageously correspond to the basic shape of the container, in particular be circular. Its lower edge may preferably be slightly larger in diameter than the edge of the container on which the attachment is located. The attachment is then the container edge encompassing on or on the container anordbar. Preferably, the article forms a well stackable and manageable shape together with the container. In cylindrical or barrel-shaped container, the entire disposable container may have a cylindrical or barrel-shaped shape, whereby a good stackability can be achieved. On the side turned away from the container, the attachment can have a recess or groove on the outside or inside. Preferably, this extends around the tower in an annular manner. The width and depth of the groove can be matched to the length of the connecting line, so that it can be accommodated in the recess or groove space saving and largely protected from damage. For the discharge device arranged on the connection line, a receptacle can be formed in or on the attachment. In this, the application device may be preferably held by clamping or positive engagement or by releasable retaining means.

In order to facilitate the transport of disposable packaging according to the invention and to improve its handling, one or more handles can be provided on the attachment. Preferably, these are formed on the side facing away from the container or end face of the attachment. An education in the form of circular segment-like handles is particularly advantageous because then a at least partially peripheral boundary can be formed on the side facing away from the container of the essay. With particular advantage, the handle / handles are arranged in a circular or circular segment parallel to the container bottom so that the basic structure of the disposable container consisting of attachment and container is substantially cylindrical so that disposable containers according to the invention are particularly easy to stack, store and transport. Alternatively, a handle in the essay be arranged to be retractable, so that it can be brought by a user from this retracted rest position in an extended and projecting from the attachment transport position.

The invention further proposes a method for pressurizing a disposable package, in particular a disposable colored package. The disposable container has a container for storing a storage volume for color fluid and a pressure regulating unit which is connected to a propellant reservoir. The propellant reservoir is or is arranged to be driven medium-sealed on a receiving unit of the disposable container and is pierced by means of a positioning unit can be positioned piercing element by the latter is moved by a user-side actuation of an actuator in the direction of the propellant reservoir and seals with a sealing portion of the Treitmittelreservoirs Treibmitteldicht. The piercing element is subsequently moved away from the propellant reservoir, whereby an outlet opening for propellant for pressurizing the container is released. The sealing of the propellant reservoir can be effected, in particular, by abutting the sealing section after being pierced against the propellant reservoir, the outlet opening being released, since the sealing section is detached from the propellant reservoir.

By the method according to the invention a high level of safety can be realized. The disposable container can be given to the end user as a ready-assembled and filled unit and can only be activated shortly before use, ie the container can be pressurized. The use of commercial gas cartridges allows safe long-term storage of propellant. For activation, the actuator is actuated on the user side, whereby it initially comes only to a piercing of the propellant reservoir. However, the introduced into the propellant reservoir outlet is still sealed by the sealing portion of the piercing, so that no propellant can flow out and the color fluid container is not yet pressurized. Only by moving the piercing element away from the propellant reservoir, the sealing portion is released from the outlet opening and this released, so that blowing agent can flow into the paint fluid container and this is pressurized. The release of the outlet opening can preferably be effected by a further actuation of the actuator. This further operation is opposite to the advantage of the first operation for piercing the propellant reservoir. The additional necessary release of the outlet opening is an advantageous and safety-procuring function, since the possibility of accidental pressurization of the container can be almost certainly avoided.

Furthermore, the piercing element can be brought into a position sealing the outlet opening by repeated actuation of the actuator. As a result, the propellant reservoir can be closed in a fuel-tight manner, in particular after a partial consumption of color fluid. For an intermediate storage of the disposable container then the pressure in the container can be lowered, for example via a vent. If necessary, the application device and connecting line can be cleaned without the use of a new propellant reservoir for further use of the opened disposable container.

Figur 1

ein Einweggebinde in einer seitlichen Schnittansicht,

Figur 2

einen Aufsatz eines Einweggebindes in einer ersten Schnittansicht,

Figur 3

einen Aufsatz eines Einweggebindes in einer zweiten Schnittansicht,

Figur 4

einen Aufsatz eines Einweggebindes in einer dritten Schnittansicht,

Figur 5

(a, b, c) einen Aufsatz eines Einweggebindes in einer vierten Schnittansicht mit zwei vergrößerten Detailansichten,

Figur 6

einen Aufsatz in einer perspektivischen Darstellung,

Figur 7

den Aufsatz der Figur 6 mit ausgezogener Handhabe,

Figur 8

eine Aufsicht auf einen mit einer Kappe versehenen Aufsatz des Einweggebindes und

Figur 9

(a, b, c) das in der Figur 3 dargestellte Hochdruckabsperrventil vergrößert in verschiedenen Funktionsstellungen zeigt.

Further features and details emerge from the following non-limiting description of the figures, in which:

FIG. 1

a disposable container in a lateral sectional view,

FIG. 2

an attachment of a disposable package in a first sectional view,

FIG. 3

an attachment of a disposable package in a second sectional view,

FIG. 4

an attachment of a disposable package in a third sectional view,

FIG. 5

(a, b, c) an attachment of a disposable package in a fourth sectional view with two enlarged detail views,

FIG. 6

an essay in a perspective view,

FIG. 7

the essay of FIG. 6 with extended handle,

FIG. 8

a plan view of a capped attachment of the disposable container and

FIG. 9

(a, b, c) that in the FIG. 3 shown high-pressure shut-off valve shown enlarged in different functional positions.

In FIG. 1 is a disposable container 1 with container 2 and article 3 shown in a side sectional view. The container 2 has a substantially circular container bottom 4 and a container wall 5 connected thereto. The container bottom 4 is curved in its inner region in the direction of the container interior. The outer edge 6 of the container bottom 4 in this way forms an annular standing area, on which the disposable container 1 can be set up safely and stably. The outer edge 6 has an outwardly and in the direction of the container wall 5 crimped fold 7, in which the lower edge of the bottom 4 is received fluid and pressure tight. At the container bottom 4 opposite side of the container wall 5, a container lid 10 is arranged. This is curved in its interior as well as the container bottom 4 in the direction of the container interior, so that a peripheral lid edge 11 is formed. Similar to the container bottom 4, the container lid 10 is fluid and pressure-tight connected by a flange with the upper fold 9 of the container wall 5. The circumferential lid edge 11 forms a base, on which the container 2 can be stored as a semi-finished product (without attachment 3) or for filling by means of filling lance and stored. It is particularly advantageous if the shape of the container bottom 4 and the outer edge 6 are matched to the shape of the container lid 10 and the lid edge 11, so that the container bottom 4 and container lid 10 of two stacked container 2 can engage each other and partly around each other, so that the Container 2 semi-finished are particularly good stackable, storable and transportable. In the container lid 10, a filling opening 13 is provided centrally. A riser pipe 18, which is either formed directly on a base body 14 of the attachment 3 described in more detail below or is sealingly connected thereto, projects into the container 2 through the filling opening 13. The length of the riser 18 is dimensioned such that its open lower riser end 19 terminates in a trough-like depression 20 of the container bottom 4. In this way, it is ensured that color fluid received via the riser 18 in the container 2 can be removed substantially completely and without residue. The seal between riser 18 and container lid 10 via a introduced into the filling opening 13 and the riser 18 fluid and pressure-tight surrounding plug 23rd

The attachment 3 for the disposable container 1 is shown in various sectional views in the Figures 2 . 3 and 4 as well as in perspective views in the Figures 5 and 6 shown. He has the main body 14. This is at the intended arrangement of the article 3 the container 2 (as in FIG. 1 shown) corresponding to the shape of the container, for example, circular and has an annular end edge 15 whose inner diameter is slightly larger than the outer diameter of the upper lid edge 11, so that it can embrace the container 2. In the region of the end edge 15 latching elements 12 are formed, which can engage in corresponding counter-latching structures on the container 2 and lock with these, so that the attachment 3 is arranged securely and stably on the container 2.

The riser 18 is to be connected to a line 24 for discharging color fluid. From the container interior via the riser 18 sucked color fluid is then passed through the line 24 to the spray gun 25 as an application device. In the figures it is shown that the line 24 is wound in a recess 26 formed on the outside of the main body 14 of the attachment 3 for transport and storage purposes. It can be unwound for spraying the color fluid and is then connected to the riser 18 on the one hand and the spray gun 25 on the other hand in a manner described later.

At the annular end edge 15 opposite side of the attachment 3, a grip element 27 is formed. The grip element is, as in particular from the Figures 5 and 6 emerges, relative to the attachment 3 movably mounted on the base body 14 so that it consists of a substantially flush with the top of the attachment 3 rest position (in the FIGS. 1 to 5 shown) in an in Fig. 6 shown pulled out transport position can be transferred. Thus, the handle member 27 can be easily grasped by a user in the rest position, a recess 31 is provided in the base body 14 of the attachment 3. Since the grip element 27 terminates flush in its rest position with the top of the attachment 3, a plurality of disposable containers 1 can be stacked on top of one another in a simple and stable manner.

About the essay 3, a cover member 32 is slipped for protection during transport. This has a recess 16 through which the grip element 27 can be grasped and can be transferred into the transport position. The outer circumference of the lid member 32 is advantageously slightly smaller than the inner diameter of the outer edge 6 of the container bottom 4, so that when stacking several containers of the outer edge 6 of an upper disposable container, the lid member 32 of a lower disposable container can embrace, so that a particularly stable state is possible ,

The spray gun 25 is formed in the form of a plastic injection molded component as a disposable spray gun. It has a non-illustrated in the figures and actuated by a handle shut-off valve. For spraying of color fluid received in the container 2, the container interior is acted upon via the pressure regulating valve 30 by means of CO ₂ as propellant from a CO ₂ pressure cartridge 29 as propellant reservoir, so that the desired and largely constant internal pressure is ensured for the removal. When the shut-off valve is opened by actuating the spray gun 25, color fluid contained in the container 2 under overpressure is sprayed out through the riser 18, the line 24 and the spray gun 25. The spray gun 25 is arranged in a recess 14 formed in the base body and held there by means of a clamping device, not shown.

As in particular from the Figures 2 . 3 and 4 As can be seen, the CO ₂ print cartridge 29 is screwed into a receiving element 33, which is fastened by means of screw connections 21 or a clip connection to the base body 14 of the attachment 3. For fixing On the receiving element, the CO ₂ print cartridge 29 has an external thread 34, which is formed on its neck region. The receiving element 33 has a matching to this internal thread 22 which is arranged in a widened portion 35 of the receiving element 33 in the longitudinal direction through-projecting through opening 36. At its end facing away from the CO ₂ print cartridge 29, the widened region 35 terminates in a shoulder 37. The CO ₂ print cartridge 29 lies with its end sealingly against the shoulder 37 with the interposition of a sealing element 8.

On the shoulder 37 opposite side of the through hole 36, this is formed with a relation to the flared portion 35 reduced diameter. The inner contour of the passage opening forms a guide region 38 there for a piercing element 39 arranged in the passage opening 36. At the end of the passage opening 36 opposite the widened region 35, a further shoulder 40 is arranged as an end stop for the piercing element 39.

The piercing element 39 is essentially cylindrical and has a piercing tip 42 at its end facing the CO ₂ -pressure cartridge 29. It also has a guide region 43 which fits with a small clearance to the guide region 38 of the through-opening 36. In the piercing element 39, a groove 41 is introduced approximately centrally in the guide region 43, in which an O-ring seal 28 is placed. This seals between piercing element 39 and guide region 38 from the center of a driving medium. At the piercing tip 42 opposite end of the piercing element 39 is provided with a connection extension 44. This has a relation to the guide portion 43 reduced diameter, so that a shoulder 45 is formed, which in turn prevents falling out of the piercing member 39 from the through hole 36 together with the shoulder 40. The piercing element 39 also has a sealing region 48 which bears sealingly against the piercing element 39 displaced in the direction of the CO ₂ print cartridge 29 and prevents the escape of propellant from the piercing tip 49 pierced by the piercing tip. The sealing region 48 is formed in particular in the form of a flat sealing surface, which comes with a corresponding positioning of the Ansteckelements 39 sealingly against the CO ₂ print cartridge 29 to the plant.

At its opposite end of the CO ₂ print cartridge 29, the receiving element 33 has an external thread 46 which cooperates with a matching internal thread of a rotary knob 47 as an actuator. The knob 47 can be moved by rotation relative to the receiving element 33 in its longitudinal direction. He is further connected to the connection extension 44 of the piercing element 39 that this can be moved by its operation in the longitudinal direction of the passage opening 36. If the rotary knob 47 is rotated in a first direction, the piercing element 39 is displaced in the direction of the CO ₂ print cartridge 29, so that it is pierced by the piercing tip. Without further operation of the knob 47, the piercing element 39 remains in the position piercing the cartridge. In this case, the introduced through the piercing tip 42 into the cartridge outlet opening 49 is closed by the sealing area 48 frictionally sealed, so that initially no blowing agent from the CO ₂ print cartridge 29 can escape. Upon rotation in the opposite direction, the piercing tip is then moved away from the CO ₂ print cartridge 29, the sealing region 48 coming off the latter and the outlet opening 49 being released. After release, propellant from the CO ₂ print cartridge 29 may enter the chamber 50 formed upon retraction of the piercing member 39. This is connected via a passage, not shown in the figures with the pressure control valve 30. By a repeated actuation of the knob 47, the piercing element 39 can be moved back in the direction of the CO ₂ print cartridge 29, so that its sealing area 48 again comes into sealing contact and the outlet opening 49 closes treibmitteldicht.

The pressure regulating valve 30 is in FIG. 3 clearly visible. It has a rocker arm 51, a high-pressure chamber 52, a low-pressure chamber 53, a check valve body 54, a blowing agent passage 55 as a high-pressure line, a compression spring 56 and an elastic membrane 57. The formed in the receiving element 33 chamber 50 is connected via the passage, not shown, with the high-pressure chamber 52. This in turn is connected to the low-pressure chamber 53 via the blowing agent passage 55.

In the propellant passage 55, a high-pressure shut-off valve is arranged with the check valve body 54, through which the propellant passage 55 is closable. The high pressure shut off valve is in the FIGS. 9a to c shown schematically. The shut-off valve body 54 is arranged in the expanded to a valve chamber 69 propellant passage 55, guided by the wall and between this shut-off closed position ( FIG. 9a ) and an open position ( FIG. 9b ) displaceable. It is provided with a circumferential groove 67, in which an O-ring seal 68 is arranged, which seals between the check valve body 54 and the wall of the valve chamber 69. Front side of the check valve body 54 is a Valve seat seal 70 is provided, which lies in the closed position sealing over the opening into the valve chamber 69 Treibmitteldurchurchpassage 55. On its opposite side of the valve seat seal 70, the check valve body 54 is formed with a rounded head 71, which, as in FIG. 3 is shown, is applied to the rocker arm 51. In the open position of the check valve body 54 is displaced in the direction of the rocker arm 51, whereby the valve seat seal 70 is released from the sealing position. The part of the blowing agent passage 55 connecting the valve chamber 69 to the low pressure chamber 53 is released from the shut-off valve body 54 in the open position so that blowing agent from the CO ₂ pressure cartridge 29 can flow into the low-pressure chamber 53. The Absperrventilköper is brought with appropriate and subsequently described release by the rocker arm 51 by acting on the valve seat seal 70 high pressure in the CO ₂ pressure cartridge 29 from the closed position to the open position. The reverse closing operation is effected by a corresponding bias of the rocker arm 51.

The low-pressure chamber 53 of the pressure regulating valve 30 is closed on one side with the elastic membrane 57 and connected via a propellant outlet 58 to the container 2 and via the Treibmitteldurchurchpass 55 with the valve chamber 69. The rocker arm 51 is pivotally mounted about a pivot 60 around, contacted with a high pressure side lever arm 59, the head of Absperrventilkörpers 54 and a low-pressure side arm 61, the elastic membrane 57. The low-pressure side lever arm 61 is also biased by the compression spring 56 in the direction of the membrane 57 , The elastic membrane 57 is clamped between a clamping ring 62 and the base body 14. The clamping ring 62 is attached via latching elements 17 on the base body 14.

In the low-pressure chamber 53 prevails due to the connection with the container 2 of the present in this internal pressure. How out FIG. 3 is immediately apparent, adjusts itself to the rocker arm 51, a force equilibrium, wherein the force exerted by the compression spring 56 force acting on the cross-sectional area of Absperrventilkörpers 54 high pressure in the high pressure chamber 52 to the membrane 57 acting internal pressure of the low pressure chamber 53 (corresponding to the pressure in the container 2) counteract. This equilibrium is set so that in the case of equilibrium in the low-pressure chamber 53 and container 2, there is the desired pressure for dispensing (spraying) of colored fluid. Decreases when applying the pressure in the container and low pressure chamber, it comes through the resulting force imbalance to a pivoting of the rocker arm 51 (in the illustration of FIG. 3 counterclockwise). The high-pressure side lever arm 59 moves it moves away from the Absperrventilköper 54 so that it moves out of its closed position due to the pressure in the high-pressure chamber 52 and the Treibmitteldurchlass 55 releases. High pressure propellant from the high pressure chamber 52 may then flow through the propellant passage 55 into the low pressure chamber 53 and from there via the propellant outlet 58 into the container 2, thereby restoring the balance of forces at the rocker arm 51. The higher the pressure in the low pressure chamber 53 rises again, the more the rocker arm returns to its original position, wherein the check valve body 54 moves back from the propellant passage 55 releasing position back to its closed position.

In the main body 14, an outlet passage 63 is formed. The main body 14 projects with an extension 64 through the filling opening 13 present in the container lid 10 into the container 2. The riser 18 forms an extension of the extension 64. In the outlet passage 63, an adapter piece 65 is inserted at the opposite end of the riser 18, which is provided on the outlet passage 63 opposite side with a connector 66 to which the line 24 can be connected (please refer FIG. 3 ). Instead of the directly inserted into the outlet passage 63 adapter piece in the FIGS. 5a and 5c shown adapter piece 65 are used, which is plugged into a check valve 71. In this way, the line 24 can be removed with the spray gun 25, for example, for cleaning or transport purposes, without it can lead to contamination of remaining in the container 2 color fluid. The shut-off valve 71 essentially has a valve body 77, in which a valve seat 72 is formed, which can be closed in a color fluid-tight manner by means of a shut-off element 73, and a shut-off element 73. The shut-off element 73 is screwed by means of an external thread 76 in the valve body 77 and positioned relative to this over the thread. The shut-off element 73 is also hollow with a through opening 74, in turn, the adapter piece 65 is added in the end. When the shut-off valve 71 is closed, ie shut-off element 73 completely screwed into the valve body 77, the valve seat 72 is closed by means of a seat seal 75. By unscrewing the valve seat 72 is opened by loosening the seat seal 75 and color fluid can flow through the through hole 74 and the adapter piece 65 to line 24.

In the FIGS. 5a and 5b is a pressure relief valve 78 shown to prevent overloading of the container 2 by excessive pressure. The pressure relief valve 78 closes an outlet 79, via which the low pressure chamber 53 with the environment connected is. It consists essentially of a provided with a seal 80 valve body 81, a compression spring 82 and a base body 83. The latter is fixedly arranged on the base body 14. The compression spring 82 biases the valve body 81 with the seal 80 relative to the main body 83 in the direction of the outlet 79, so that the seal 80 closes this pressure medium tight. If the pressure in the low-pressure chamber 53 rises to a too high value, the valve body 81 is lifted off via the seal 80 from the outlet 79 against the bias of the compression spring 82, so that pressure medium from the low-pressure chamber 53 can escape into the environment and an overload of the Container 2 is avoided. After escaping the overpressure and reaching the desired pressure in the low pressure chamber 53 and container 2, the pressure relief valve 78 closes automatically by the action of the compression spring 82nd <B> LIST OF REFERENCES </ b> 1 disposable containers 37 shoulder 2 container 38 guide region 3 essay 39 piercing 4 container bottom 40 shoulder 5 container wall 41 groove 6 outer edge 42 puncture tip 7 fold 43 guide region 8th sealing element 44 Connecting projection 9 Fold (above) 45 shoulder 10 container lid 46 external thread 11 cover edge 47 knob 12 locking element 48 sealing portion 13 fill opening 49 outlet opening 14 body 50 chamber 15 end edge 51 rocker arm 16 Recess (in 32) 52 High-pressure chamber 17 locking element 53 Low-pressure chamber 18 riser 54 check valve 19 Standpipe end 55 Propellants passage 20 trough-like depression 56 compression spring 21 screw 57 membrane 22 inner thread 58 Treibmittelauslass 23 Plug 59 high pressure side lever arm 24 management 60 swivel 25 spray gun 61 low-pressure side lever arm 26 deepening 62 clamping ring 27 handle element 63 outlet passage 28 O-ring seal 64 extension 29 CO ₂ print cartridge 65 adapter piece 30 Pressure control valve 66 joint 31 Recess (in 14) 67 groove 32 cover element 68 O-ring seal 33 recording unit 69 valve chamber 34 external thread 70 Valve seat 35 expanded area 71 shut-off valve 36 Through opening 72 valve seat 73 shut-off 79 outlet 74 Through opening 80 poetry 75 seat seal 81 valve body 76 82 compression spring 77 valve body 83 body 78 Pressure relief valve

Claims (12)

1. Single-use package (1), in particular, a single-use paint package for receiving and discharging a paint fluid by spraying, comprising:

   a container (2) forming a storage volume for the paint fluid, and

   a pressure control unit (30) which can be connected to a propellant reservoir (29),

   wherein the propellant reservoir (29) is or can be disposed at a receiving unit (33) of the single-use package,

   wherein a tapping element (39) for tapping the propellant reservoir (29) can be positioned relative to the receiving unit (33),

   which tapping element (39) is movable via a user-side operable actuator (47),

   characterized in that the tapping element comprises a sealing portion (48), by means of which an outlet opening (49) introduced into the propellant reservoir (29) by means of the tapping element (39) can be sealed off.
2. The single-use package according to claim 1, characterized in that the receiving unit (33) comprises a through hole (36), in which the tapping element (39) is disposed to be movable in the longitudinal direction thereof, in particular, disposed to be sealingly movable relative to the receiving unit (33).
3. The single-use package according to claim 2, characterized in that the receiving unit (33) comprises a thread (22), to which the propellant reservoir (29) is or can be screwed.
4. The single-use package according to claims 2 or 3, characterized in that the through-hole (36) comprises a shoulder (37), on which the propellant reservoir (29) sealingly rests when disposed as intended.
5. The single-use package according to any one of the preceding claims, characterized in that the actuator (47) comprises a thread and is connected to the tapping element (39) so that the tapping element (39) is movable via operation, in particular, rotational operation of the actuator (47) relative to the receiving unit (33).
6. The single-use package according to any one of the preceding claims, characterized in that the receiving unit (33) is in fluidic communication with the pressure control unit (30).
7. The single-use package according to any one of the preceding claims, characterized in that it comprise an attachment (3), at which the pressure control unit (30) and/or the receiving unit (33) is/are disposed.
8. The single-use package according to claim 7, characterized in that the attachment (3) is sealingly fastened to the container edge (9) of the container (3), in particular, by means of latching elements (17) or a clip connection.
9. Method for pressurizing a single-use package (1), in particular, a single-use paint package, comprising a container (2) forming a storage volume for paint fluid, and
   a pressure control unit (30) which is or can be connected to a propellant reservoir (29), wherein the propellant reservoir (29) is disposed at a receiving unit (33) of the single-use package in a propellant-tightly closed manner and is tapped by means of a tapping element (39) which can be positioned relative to the receiving unit (33), by moving the tapping element (39) towards the propellant reservoir (29) via user-side operation, in particular, rotational operation of an actuator (47), and
   sealing the propellant reservoir (29), subsequent to tapping, in a propellant-tight manner by means of a sealing portion (48),
   wherein the tapping element (39) is then moved away from the propellant reservoir (29), thereby clearing an outlet opening (49) for propellant for pressurizing the container (2).
10. The method according to claim 9, characterized in that the tapping element (39) is moved away from the propellant reservoir (29) by operation of the actuator (47).
11. The method according to claims 9 or 10, characterized in that the tapping element (39) is brought into a position sealing the outlet opening (49) of the propellant reservoir (29) by repeated operation of the actuator (47).
12. Use of a package according to any one of claims 1 to 8 for paint, varnish, glaze, wood preservative and similar fluids.

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