WO2018137881A1 - Disposable paint container comprising a closable vent device - Google Patents

Abstract

The invention concerns a disposable container (1), intended to contain at least one component for spraying and having a bottom (3) with an inner face on the inside of said container and an outer face (3a) on the outside of said container (1), at least one peripheral side wall (2) extending from the inner face of the bottom (3) to an open connection end, spaced apart from and facing said bottom (3), characterised in that the bottom (3) has at least one part (10a) projecting out of the outer face (3a), said part (10a) delimiting, on the inside, a groove (10) opening into the inner volume of said container (1) at the inner face.

Description

 DISPOSABLE PAINT CONTAINER HAVING A DEVICE

 SHUTTER VENT

The present invention relates to the general technical field of containers containing liquid spray products and systems, apparatus or devices for spraying. The containers are generally used for packaging, preparing and working with a spray gun or spraying, storage, application and possible preservation of a product from a mixture of at least two components .

 More particularly, the invention relates to a kit or a disposable kit separately containing the two or more components to be mixed before use after its assembly via an adapter part on a spray gun.

 In the field of two-component products and more generally multi-component products for painting, spraying or spraying, for example paints, primers, varnishes and the like, each of the two or more components of the final product must be conditioned. apart. These components are mixed at the last moment, just before being used, because after a certain time it is no longer possible to spray them or to spray them, for example because they take in mass, that they harden or become pasty. In addition, these components are generally sensitive to air and / or light and must be packaged separately in sealed and / or opaque containers.

 When a bi-component or multi-component product is to be sprayed, the operator must generally pre-mix the components of the product before transferring the mixture to a suitable container for its spray tool, each of the components of the The product is then initially individually packaged in a separate container.

 This preparation of two-component or multi-component spraying products has many disadvantages, among which we can notably mention:

• bulky and expensive commercial packaging for the product bi-component because each of the components must be individually packaged in a separate container;

 • risks of overturning and loss of components or product during the preparation of the product to be sprayed due to multiple transfer operations from one container to another;

 • risk of improper dosage from the operator during the preparation of the product to be sprayed, which can affect the effectiveness of the bi-component product obtained;

 • cumbersome storage of partially emptied containers for each of the components after mixing,

 • air deterioration of remaining components stored in partially emptied containers;

 • the preparation time required when mixing components, while the rising cost of labor forces employers to find solutions to increase the speed of interventions.

 In the field of painting or spraying by means of a tool such as a gravity gun, a suction gun or the like, there are only a few single-use two-component packages.

 In order to make the painting or spraying work easier, more reliable and faster but also more economical in products and equipment, it is an object of the present invention to provide a new packaging and work container serving as a disposable cup for mounting on a spray tool.

 Another object of the invention is to limit the risk of deformation of such a container, especially when the latter contains several components and / or is closed by a sealing film.

The objects assigned to the invention are achieved by means of a disposable container, intended to contain at least one component to be sprayed and having a bottom with an internal face and an external face to said container, at least one peripheral lateral wall. extending from the inner face of the bottom to an open connection end, spaced and facing said bottom, characterized in that the bottom has at least one groove opening on the interior volume of said container at the level of the face in that the bottom is provided with a closable vent device, which comprises an opening forming a air passage arranged in the bottom.

 According to an exemplary embodiment of the container according to the invention, the bottom has at least one projecting portion on the outer face, said portion internally defining the groove.

 According to an exemplary embodiment according to the invention, the container comprises reinforcement reinforcements integral with the bottom and the portion defining the groove.

 According to an exemplary embodiment according to the invention, the groove extends in a closed circle on itself.

 According to an exemplary embodiment according to the invention, the container comprises at least one rigid and removable wall engaged by one of its ends in said at least one groove, to delimit in said container a sealed compartment adapted to contain an additional component .

 According to an exemplary embodiment, the portion defining the groove has a U-shaped cross section and comprises sealing members intended to cooperate with the end of the rigid and removable wall.

 According to an exemplary embodiment according to the invention, the rigid and removable wall delimits a tube.

 The container is advantageously translucent.

 According to an exemplary embodiment according to the invention, the container contains at least one product of the paint, varnish or cleaning product type and / or the connection end being closed by a rigid closure element or by a sealing film.

 The opening is for example made in the bottom and a rotary valve is mounted on the outer face of the bottom in the extension of the opening so as to close and release the air passage.

 According to an exemplary embodiment of the container according to the invention, the rotary valve has in the open position, for example with an actuating lever, a projection on the outer face greater than the portion defining the groove and in the position of closure, said rotary valve having a projection smaller than the portion defining the groove.

The objects assigned to the invention are also attained at using a liquid spray apparatus comprising a gravity fed spray gun and a reservoir comprising a disposable container as described above, a removable cover, said cover being arranged to close the open end of the container, characterized in that the bottom, also called base, of the container is provided with a closable opening, also called air hole, the container being made of a translucent plastic chosen so that the contents of the container is visible and having markings on the side wall (s) to determine the amount of contents, the lid being provided with an orifice, also called an outlet, for transferring liquid from the reservoir to an inlet of the spray gun and a filter being arranged to filter the liquid sucked out of the tank through the lid orifice, the filter being located in the lid.

 The objects assigned to the invention are also achieved by means of a liquid spray device comprising a spray gun and a tank for a liquid to be sprayed, the tank comprising a container as described above and a lid removable container which is arranged to close the open end of the container, also called opening in the container, the lid having an orifice, also called outlet, which can be connected to the spray gun so as to allow the suction of the liquid out of the tank in use.

 According to an exemplary embodiment according to the invention, the spray gun comprises an integrated connection means which is arranged to make a non-screwed engagement with a cooperating connector means on the lid and by means of which the tank is detachably fixed. spray gun.

 By the term "non-screwed" is meant all forms of separable connections between two connectors that can be engaged / disengaged mutually by axial movement and / or relative angular movement requiring less than a complete turn around a connection axis.

According to an exemplary embodiment according to the invention, the spray gun comprises an integrated plug, arranged to engage without threading with the connector means, which comprise a tubular coupling member which is pushed into the socket, the tubular coupling member having a first portion which provides a fluid-tight connection between the coupling member and the socket and a second portion which may cooperate with the spray gun outside the socket to prevent rotation of the coupling member in said socket without limiting the relative axial movement between the coupling member and said socket for engaging / disengaging the coupling member; coupling member.

 The container according to the invention has the advantage of having in its bottom a groove for engaging an inner tube whose design improves the seal between said bottom and said inner tube. In addition, the container can be used without inner tube and without structural modification.

 The groove of the container according to the invention also provides a better maintenance of the inner tube and increases the stability of the bottom. Indeed, the conformation protruding on an outer face reduces the risk of deformation of the bottom and the container, which is very advantageous when said container is closed by a sealing film. The conformation of the groove also improves the support of the container on a plane.

 In addition, the bottom is flat and devoid of elements in relief may interfere with a mixing operation using a stirring rod.

 The container according to the invention also comprises a closable vent device remarkably simple, reliable and economical.

 Other features and advantages of the invention will appear in the description which follows, given by way of non-limiting example and accompanied by the drawings in which:

 FIG. 1 is a perspective illustration of an exemplary embodiment of a container according to the invention,

 FIG. 2 is an illustration of the container of FIG. 1 in which the sealing film has been removed,

FIG. 3 is an illustration in plan view of a sealing film sealing the opening of the container according to the invention in plan view, FIG. 4 is an illustration in plan view of a rotary valve according to a first embodiment mounted on the container according to the invention,

 FIG. 5 is a perspective view of the valve illustrated in FIG. 4;

 FIG. 6 is an illustration in plan view of a rotary valve according to a second embodiment mounted on the container according to the invention,

 FIG. 7 is a front perspective view of the valve illustrated in FIG. 6;

 FIG. 7 is a rear perspective view of the valve illustrated in FIG. 6;

 FIG. 9 is a sectional view of an exemplary embodiment of a container according to the invention for multi-component application with the rotary valve in the open position,

 FIG. 10 illustrates the container according to it in section of FIG. 9 according to another section plane,

 - Figure 1 1 is an illustration of the container according to the invention of Figures 9 and 10 provided with a sealing film and showing the rotary valve in the closed position,

 FIG. 12 is an illustration of the container of FIG. 11 during the separation of the sealing film,

 - Figure 13 is another example of use of the container according to the invention, specifically in a single-component use, - Figure 14 illustrates the use of the container according to the invention during the extraction of a central tube insulating an additional component,

FIG. 15 illustrates a detail of FIG.

 FIG. 16 illustrates an exemplary embodiment of a spraying apparatus on which the container according to the invention is mounted, and

 FIG. 17 illustrates an exemplary embodiment of a container according to the invention, seen from below and in perspective.

detailed description

Figure 1 illustrates in perspective view an embodiment of a container 1 according to the invention. This generally cylindrical or frustoconical generally shaped container has a peripheral side wall 2 extending from a bottom 3 to an open end 4. The latter is visible more precisely in Figure 2.

 FIG. 2 shows for example an embodiment of the container

1 provided with an internal compartment delimited by a tube 1 has internal. The opening end 4, also called connection end is advantageously closed by a sealing film 5 when the container 1 is filled with one or more products.

 The sealing film 5 is shown, not attached to the container 1, in Figure 3 in plan view. The sealing film 5 has one or more gripping tabs 5a accessible at its periphery so as to allow a better grip when it is detached from the container 1.

 The container 1 is also provided, centrally or eccentrically, on an outer face 3a of the bottom 3 of a closable vent device 6. The latter is shown respectively closed and open for example in Figures 1 and 3.

 The closable vent device 6 comprises an opening 7 formed in the bottom 3 so as to form an air passage. This opening 7 is illustrated in particular in FIGS. 9, 11, 12 and 13.

 The closable vent device 6 also comprises a rotary valve 8, a first embodiment of which is illustrated in greater detail in FIGS. 4 and 5 and a second embodiment of which is illustrated in greater detail in FIGS. 6 to 8. The rotary valve 8 is mounted on an outer face 3a of the bottom 3 and in the extension of the opening 7. Reference may be made more particularly to FIGS. 9, 11, 12 and 13.

 The rotary valve 8 has an axis of rotation 8a extending in a plane parallel to the outer face 3a and mounted in tight fit in the jaws 9. The jaws 9 are preferably integral and projecting on the outer face 3a.

The rotary valve 8 advantageously comprises an actuating lever 8b for moving said rotary valve 8 between two abutting positions constituting limit switches. These two abutment positions respectively correspond to a release and a closure of the opening 7.

 The rotary valve 8 also has a central cylindrical portion 8c. The latter is in contact with the outer face 3a of the bottom 3 and ends longitudinally and axially on each side by a coaxial end of the smaller diameter to form the axis of rotation 8a engaged in a corresponding jaw 9.

 According to a first embodiment of the rotary valve 8, the cylindrical portion 8c also has a radial duct 8d and through to allow depending on the rotational position of the rotary valve 8, to release the air passage by setting communicating the opening 7 with the free air or closing said opening 7. Such a rotary valve 8 is shown in Figures 4 and 5.

 According to a second embodiment of the rotary valve 8, the cylindrical portion 8c has a groove 8e open towards the outside, for example located on at least a quarter turn of the cylindrical portion 8c, to allow depending on the position in rotating the rotary valve 8, to release the air passage by communicating the opening 7 with the free air or to close said opening 7. Such a rotary valve 8 is shown in Figures 6 to 8.

 The rotary valve 8 according to the first embodiment is thus illustrated in the open position, for example in FIG. 9 and in the closed position, for example in FIG. 11, 12 or 13.

 The container 1 and the jaws 9 are advantageously made in one piece, for example by injection of a plastic material.

 The axis of rotation 8a and the cylindrical portion 8c are advantageously made in one piece, for example by injection of a plastic material.

 The container 1 according to the invention, illustrated for example in Figure 1 is pre-filled with at least one product of the paint, varnish or cleaning product type and comprises a closure element which is advantageously constituted by the sealing film 5 .

An exemplary embodiment of the container 1 according to the invention illustrated in Figures 2, 9, 10, 1 1, 12, 14 and 17 relates to a 1-component container 1, intended to contain separately and isolated two separate components. These will be mixed before a spraying operation.

 Thus, as can be seen for example in FIG. 2, the container 1 internally comprises the tube 1a whose lower end 1c is engaged in a groove 10, for example circular and of rectangular cross section, formed in the bottom 3. The upper end of the tube 1a is advantageously provided with a flat part 1b peripheral to facilitate the adhesion of the sealing film 5. Reference will be made more particularly to Figure 1 1.

 The groove 10 is constituted by a U-shaped bottom 3, for example with a radial conical shape on the inner or outer side to ensure or improve the seal. According to other exemplary embodiments, the seal can be obtained radially on one side, with sealing lips, with lugs for performing a hitching, interlocking or elastic embedding (tight engagement with retaining elements) or the like sealing elements may be provided, if necessary in different materials.

 Axial guide ribs may also be provided on the inner tube or in the groove with an axial seal at the bottom of the groove

 The upper field 2a of the side wall 2 advantageously has a contact surface smaller than the contact surface that the flat 1b has. This makes it possible to obtain a stronger adhesion between the sealing film 5 and the tube 1a than between the sealing film 5 and the upper field 2a of the container 1. It is thus easier to extract the tube 1a from the container 1, more precisely from its sealed engagement in the groove 10 of the bottom 3, by exerting a pull on the sealing film 5, the tube 1 then remaining attached to the said sealing film 5. This is illustrated for example in Figure 12.

 Figure 13 illustrates an embodiment of the container 1 according to the invention which is intended to contain only one component. There is therefore no tube 1a and no partition wall disposed inside the container 1 or engaged in the groove 10.

FIG. 14 illustrates an exemplary embodiment of a two-component container 1 according to the invention. It is necessary to extract the tube 1 inside so as to be able to mix the stored components respectively inside said tube 1a and peripherally in the container 1 around said tube 1a. The latter can also be off-center in the container 1.

 The container is advantageously made of a translucent or opaque plastic material depending on the contained product or products, which may be sensitive to light, especially ultraviolet radiation.

 It may be advantageous to use a hollow stirring rod 12, illustrated in FIGS. 14 and 15, which has a shoulder 12a in the form of a leading edge at one of its ends as well as positioning notches 12b at its other end. end. It may thus be useful to engage the shoulder 12a under the flat part 1b of the tube 1 inside by bearing with the rod 12, in particular with the aid of one of the notches 12b, on the upper field 2a. A lever effect is thus used to lift and extract the tube 1a from the container 1 or to start its extraction out of the groove 10.

 Once this tube 1 inside extracted from the container 1, it is advisable to mix the two components inside said container 1 with the aid of the stirring rod 12. The latter is provided for this purpose with holes 12c facilitating the mixing operation.

 The container 1 is advantageously provided with portions of helical ribs 13 on the upper and outer side of the peripheral side wall 2 so as to constitute a means of connection to a spray gun 14. Such a connection, known as such, is made via a cover 15 provided with an outlet port associated with an adapter. The lid 15 internally comprises complementary mounting means to the rib portions 13 to be mounted or screwed on the container 1. The adapter mounted on the outlet orifice makes it possible to connect the tank thus constituted on the spray gun 14. A filter 16 is preferably integrated in the lid 15.

 The reservoir comprising the container 1 and the lid 15 according to the invention, intended to be mounted on a painting or spraying tool, for example a spray gun 14.

The present description is mainly concerned with the case of a two-component or one-component product. The increase in the number components results in the relative multiplication of individual additional volumes containing each of them in the container 1.

 If the final product used after mixing for spraying or spraying is for example a paint, a primer, a coating or a varnish, the first component may be a solvent or a binder and the second component a filler or a hardener.

 The cover 15 advantageously has a part or adapter part or adapter provided for connecting the assembly of the reservoir of the invention to a spraying tool. In the case where the disposable assembly 1 of the invention is intended to be mounted on a spray gun 14 including gravity, the part or adaptation part comprises a distribution cone or a particular technical form of adaptation to the the entry of the gun 14 as shown in particular in Figure 16. The assembly, also called tank, comprising the container 1 and the lid 15, thus constitutes a true full bucket which is disposable.

 The container 1, illustrated for example in Figure 17, comprises reinforcements 17solidaires the bottom 3 and a portion 10a projecting on the outer face 3a, defining the groove 10. The reinforcements 17, for example three in number, present a triangle shape and are substantially distributed in a star along the portion 10a. The reinforcements 17 also extend on either side of the portion 10a of circular extension. The reinforcements 17 thus contribute to limiting or eliminating the deformations of the bottom 3, in particular during the sealing or sealing operation of the container 1, during which said container is subjected to a certain number of mechanical stresses.

 Obviously, the invention is not limited to the preferred embodiments described above and shown in the various figures, the skilled person can make many modifications and imagine other variants without departing from the scope and of the scope of the invention.

Claims

1. Container (1) disposable, intended to contain at least one component to be sprayed and having a bottom (3) with an inner face and an outer face (3a) to said container (1), at least one peripheral side wall (2) s extending from the inner face of the bottom (3) to an open connection end, spaced and facing said bottom (3), characterized in that the bottom (3) has at least one groove (10) opening on the inner volume of said container (1) at the inner face and in that the bottom is provided with a closable vent device (6), which comprises an opening (7) forming an air passage formed in the bottom (3). 2. Container (1) according to claim 1, characterized in that the bottom (3) has at least one portion (10a) projecting on the outer face (3a), said portion (10a) internally defining the groove (10). . 3. Container (1) according to claim 2, characterized in that it comprises stiffening reinforcements (17) integral with the bottom (3) and the portion (10a) defining the groove (10). 4. Container (1) according to any one of claims 1 to 3, characterized in that the groove (10) extends in a closed circle on itself. 5. Container (1) according to any one of claims 1 to 4, characterized it comprises at least one rigid wall and removable engaged by one of its ends (1 c) in said at least one groove (10). ), to delimit in said container (1) a sealed compartment adapted to contain an additional component. 6. Container (1) according to claim 5, characterized in that the portion (10a) defining the groove (10) has a U-shaped cross section and comprises sealing members intended to cooperate with the end of the rigid and removable wall. 7. Container (1) according to claims 4 and 5, characterized in that the rigid and removable wall defines an inner tube (1 a). 8. Container (1) according to any one of claims 1 to 7, characterized in that it is translucent. 9. Container (1) according to any one of claims 1 to 8, characterized in that it is pre-filled and contains at least one product of the paint, varnish or cleaning product and / or the end of connection being closed by a rigid closure member or a sealing film (5). Container (1) according to any one of claims 1 to 9, characterized in that the venting device (6) comprises a rotary valve (8) mounted on the outer face (3a) of the bottom (3) in the extension of the opening (7), so as to close and release the air passage. 1 1. Container (1) according to claims 10 and 2, characterized in that the rotary valve (8) has in the open position, a projection on the outer face (3a) larger than the portion (10a) defining the groove (10). ) and in the closed position, said rotary valve (8) having a projection smaller than the portion (10a) defining the groove (10). A liquid spray apparatus comprising a gravity fed spray gun (14) and a reservoir comprising a disposable container (1) according to any one of claims 1 to 11, a removable lid (15), said lid (15) being arranged to close the open end of the container (1), characterized in that the bottom (3) of the container (1) is provided with a closable opening, the container (1) consisting of a translucent plastic material selected so that the contents of the container (1) are visible and marked on the side wall (s) for to determine the quantity of contents, the lid (15) being provided with an orifice, for transferring liquid from the reservoir to an inlet of the spray gun (14) and a filter (16) being arranged to filter the liquid sucked out of the tank through the hole of the lid (15), the filter (16) being located in the lid (15). A liquid spray device comprising a spray gun (14) and a reservoir for a liquid to be sprayed, the tank comprising a container (1) according to any one of claims 1 to 1 1 and a lid (15) removable container which is arranged to close the open end or connecting end of the container (1), the lid (15) having an orifice which can be connected to the spray gun (14) so as to allow the suction of the liquid out of the tank in use. Device according to claim 13, characterized in that the spray gun (14) comprises an integrated connection means which is arranged to make a non-screwed engagement with connector means cooperating with the cover (15) and by means of which the reservoir is detachably attached to the spray gun (14).