Scraper device for scraping liquid paint off the edge of an opening in a container for paints

Abstract

A scraper device for removing coating material, in particular paint or varnish, from the edge of an opening of a container for coating materials, characterized in that the scraper device is arranged flat around at least a part of the opening and encompasses the opening in a U-shape in a direction perpendicular to the edge of the opening, wherein the scraper device consists of a material that repels coating materials.

Description

[0001] The invention relates to a scraper device for removing liquid coating material, in particular paint or varnish, from the edge of an opening of a container for coating materials, for example, a paint or varnish container. The invention further relates to a tool for manufacturing a scraper device.

[0002] According to DIN 55945, a coating material, also called a paint or coating substance, is a "liquid to paste-like coating material that is applied primarily by brushing or rolling". Such a coating material is, in particular, varnish or glaze.

[0003] Containers for liquid coatings, such as paint containers or paint cans made of sheet metal or plastic, are known from the prior art. These containers are usually cylindrical and have a mostly circular opening on their upper, flat end face for filling and / or dispensing coatings. To remove the coating from the container, a brush, roller, or spatula is dipped into the coating. If the brush, roller, or spatula picks up too much coating, some of it is wiped off at the edge of the opening and remains in depressions in the rim or drips back into the container. With fast-drying or setting coatings, which typically dry or set within a few minutes, this is not always the case.When coatings, for example acrylic paints with water as a solvent, the paint can dry at the edge of the opening and, upon subsequent contact with, for example, a brush, break into small particles, which then fall into the container. The paint contaminated by these small particles cannot be used immediately, as the particles would be transferred by the brush to the object being coated, creating visible bumps or blemishes on the coated surface. The contaminated paint must therefore be cleaned in a time-consuming process, such as using a sieve to trap the small particles, or it is unusable and must be disposed of.

[0004] It is known from the prior art to mask the rim of a paint container with masking tape, also known as painter's tape. The paint is then applied to the tape using a brush, roller, or spatula. If some of the paint has dried on the tape, it can be removed and disposed of along with the dried paint without contaminating the paint in the container. However, this method has the disadvantage that the masking tape often needs to be removed and disposed of when coating larger surfaces, generating significant amounts of waste. Furthermore, removing and reapplying masking tape to the rim of the container is time-consuming.

[0005] From DE 20 2014 005 712 U1, a funnel-shaped brush wiper for paint cans is known, which is placed on the opening of a paint can. Part of the funnel-shaped brush wiper extends into the paint can, while another part protrudes from the paint can in a funnel shape. When a brush is wiped against the upper edge of the funnel-shaped brush wiper, paint or varnish can flow back into the paint can along the inner wall of the funnel-shaped brush wiper. However, this funnel-shaped brush wiper extends considerably beyond the edge of the paint can and thus takes up a lot of space.

[0006] The invention is therefore based on the objective of further developing a generic scraping device for scraping paint material from the edge of an opening of a container for paint materials in such a way that the disadvantages of the prior art are eliminated.

[0007] This problem is solved by the features of the independent claim. Further developments of the invention are the subject of the dependent claims.

[0008] According to the invention, the scraper is arranged flat around at least a portion of the opening and encompasses the opening in a U-shape, extending in a direction perpendicular to the edge of the opening, or, in the case of cylindrical containers, in a radial direction. The scraper consists of a material that repels or has a repellent effect on coatings, so that no coatings adhere to the scraper. The coating-repellent material is particularly preferably made of silicone. A particular advantage of the coating-repellent material is that the coating does not adhere to the scraper, but rather runs back into the container or can be easily scraped off the scraper, for example, by shaking it off.

[0009] The scraper device comprises the opening in a U-shape, extending perpendicular to the edge of the opening. In the context of this invention, "U-shaped" means that the scraper device at least partially, preferably completely, covers the edge and extends downwards by several millimeters, preferably about 5 millimeters, on at least one side of the edge on the inside and / or outside of the container. Particularly preferably, the scraper device projects into the inner edge by about 5 millimeters, completely covers the edge of the container, and projects downwards by about 5 millimeters on the outer edge. Projecting into the inner edge of the container opening has the particular advantage that the coating material cannot penetrate between the scraper device and the edge of the container opening after scraping.

[0010] The container is preferably a cylindrical can made of plastic or metal, which has an opening on one of its flat end faces. In this case, the wiping device according to the invention is preferably designed to be at least partially circular, preferably circular, in the azimuthal direction and encompasses at least a part of the rim, preferably the entire rim of the opening. The wiping device thus forms the shape of a wiping ring.

[0011] According to a preferred embodiment, the wiping device at least partially replicates or shapes the contours of the opening's edge. The wiping device is preferably adapted to the contours of the opening's edge of the respective container, whereby containers from different manufacturers of coating material containers have different opening edge contours. Particularly preferably, the wiping device is designed so that it can be placed on differently shaped opening edges of different containers. This includes containers with different shaped edges or different diameters, or containers from different manufacturers.

[0012] According to a further preferred embodiment, the scraper is flat in that it projects beyond the edge of the opening by only up to 5 millimeters, preferably only up to 3 millimeters. "Flat" in the sense of this invention means that the scraper according to the invention projects beyond the edge of the container's opening by only a few millimeters. Particularly preferred is the scraper according to the invention, which is a flat silicone scraper ring that is placed on the edge of the container's opening and completely covers it.

[0013] A commonly used container is a cylindrical tin can, suitable for Jotun or Caparol paints. This can has a diameter of approximately 17 cm and a height of approximately 16.5 cm. The opening at the top of the can has an inner diameter of approximately 13.5 cm, and the rim of the opening is approximately 1.5 cm wide. A scraper ring according to the invention, adapted to the rim of this can, has an outer diameter of approximately 17.5 cm, an inner diameter of approximately 12.5 cm, and a height of approximately 0.8 cm. The scraper ring projects approximately 0.3 cm beyond the upper edge of the opening. The rim of the opening has a groove or channel-shaped depression for collecting scraped-off paint (without the scraper ring). A concentric projection on the underside of the scraper ring extends into this groove.

[0014] A corresponding wiper ring is also available for cylindrical tinplate paint cans that can be filled with Sto paint. The rim of these paint cans is also approximately 1.5 cm wide, but the groove on the rim for collecting the wiped-off paint is positioned further out than on a paint can filled with Jotun or Caparol paint. Therefore, a specially adapted wiper ring is provided for this paint can, with its concentric projection on the underside of the wiper ring positioned further outwards.

[0015] According to another preferred embodiment, the coating material is applied using a brush, roller or spatula.

[0016] According to another preferred embodiment, the scraper device is removable from the edge of the opening and arranged for reuse. This has the advantage that the scraper device can be removed from one container and placed on another.

[0017] According to a further preferred embodiment, the scraper device has a nose-like protrusion at its terminal edge, which projects into the inner rim of the container, and this protrusion points towards the container wall. This protrusion hooks onto the edge of the container opening like a claw. This advantageously prevents the scraper device from being lifted off the container when the brush, roller, or spatula is removed.

[0018] The invention further relates to a tool for manufacturing a corresponding scraper device. The paint-repellent material, still liquid or pasty, is filled into this tool and then hardened. Finally, the tool is removed from the finished scraper device. The tool forms the negative mold of the scraper device.

[0019] Preferably, the tool is designed in two parts, consisting of a lower and an upper part that are detachably attached to each other and are filled with the paint-repellent material while still liquid or pasty. After the paint-repellent material has hardened, the lower and upper parts are separated. Alternatively, the tool is a cavity that is open at one end and is filled there with the paint-repellent material while still liquid or pasty.

[0020] It is particularly advantageous for the surface of the tool to be provided with a non-hardening lubricant or a non-stick coating, so that the hardened paint-repellent material can be easily removed from the tool without damage.

[0021] It is understood that the features mentioned above and those to be explained below can be used not only in the combinations specified, but also in other combinations without leaving the scope of the present invention, insofar as this is covered by the scope of protection of the claims.

[0022] The advantages of the invention are explained with reference to the following exemplary embodiments and the accompanying figures. These exemplary embodiments represent preferred configurations, to which, however, the invention is in no way limited. Furthermore, for the sake of clarity, the illustrations in the figures are highly schematic and do not reflect actual conditions. In particular, the proportions shown in the figures do not correspond to the relationships found in reality and serve solely to improve clarity. Moreover, for the sake of clarity, the embodiments described in the following exemplary embodiments have been reduced to the essential core information. In practical implementation, significantly more complex patterns or images may be used.

[0023] The figures schematically depict in Fig. 1. A cylindrical container for coating materials known from the prior art, shown in an oblique top view. Fig. 2. Side view, a sectional view of the edge of the container. Fig. 1 along the intersection line AA, and thereby in Fig. 2a and Fig. 2b the edge of two different containers, Fig. 3 in oblique top view an embodiment of a scraper device according to the invention in the form of a scraper ring and here in Fig. 3a from diagonally above and in Fig. 3b from a low angle, Fig. 4 in side view a sectional view of the wiper ring made of Fig. 3 along the intersection line BB, Fig. 5 in side view a sectional view of the wiper ring made of Fig. 3 along the intersection line CC, Fig. 6 in side view the wiper ring made of Fig. 5, which is on the edge of the container Fig. 2a is set up.

[0024] Fig. Figure 1 schematically shows, in an oblique top view, a cylindrical container for coating materials known from the prior art, in the form of a paint container or paint can. The paint can has an outer wall 1 and a rim 2 at its upper opening. The radial direction is defined here as the direction perpendicular to the rim of the opening, and the azimuthal direction as the direction along the rim of the opening, i.e., in the direction of angle α.

[0025] Fig. Figure 2 shows a sectional view of the edge 2 of the paint can in a side view. Fig. 1 along the intersection line AA. Fig. Figure 2a shows the rim 2 of a paint can that can be filled with paint from the company Caparol or Jotun, and Fig. 2b the rim 2 of a paint can that can be filled with paint from the company Sto. The rim of the opening of both paint cans has a width Ba and Bb of approximately 1.5 cm and a groove 3. To the left of the outer wall 1 is the outer area of ​​the paint can and the outer edge of the opening, and to the right of the outer wall 1 is the inner area of ​​the paint can and the inner edge of the opening.

[0026] Fig. Figure 3 shows an exemplary embodiment of a scraper device according to the invention in the form of a scraper ring 4 in an oblique top view and here in Fig. 3a from diagonally above and in Fig. 3b from a downward angle. This wiper ring 4 is attached to the paint can with the rim made of Fig. 2a adapted, i.e., a paint can that can be filled with paint from the companies Caparol or Jotun. The wiper ring 4 is made of silicone and has an outer diameter of approximately 17.5 cm, an inner diameter of approximately 12.5 cm, a width of approximately 2.5 cm and a height of approximately 0.8 cm. Fig. Figure 4 shows a sectional view of the wiper ring in a side view. Fig. 3 along the intersection line BB and Fig. 5 along the intersection line CC.

[0027] Fig. Figure 6 shows the scraper ring 4 in a side view. Fig. 5, which is on the edge 2 of the paint can. Fig. 2a is attached. The wiper ring 4 projects approximately 0.3 cm beyond the upper boundary of the edge 2 of the opening. A concentric projection on the underside of the wiper ring 4 extends into the groove 3.

[0028] The wiper ring extends approximately 5 millimeters into the inner rim, completely covers the rim of the paint container, and extends approximately 5 millimeters downwards at the outer rim. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 20 2014 005 712 U1

[0005]

Claims

[1] Scraper device for scraping off coating material, in particular paint or varnish, from the edge of an opening of a container for coating materials, characterized by that the scraper device is arranged flat around at least part of the opening and encompasses the opening in a U-shape in a direction perpendicular to the edge of the opening, wherein the scraper device consists of a material that repels coating materials. [2] Scraper device according to claim 1, characterized by that the container is a cylindrical can made of plastic or metal, which has an opening on one of its flat end faces. [3] Scraper device according to claim 2, characterized by that the scraping device is designed in an azimuthal direction at least partially circular, preferably circular, and encompasses at least a part of the edge, preferably the entire edge of the opening. [4] Scraper device according to one of the preceding claims, characterized bythat the scraping device at least partially replicates or recreates the contours of the edge of the opening. [5] Scraper device according to one of the preceding claims, characterized by that the paint is scraped off with a brush, roller or spatula. [6] Scraper device according to one of the preceding claims, characterized by that the material which repels paints is made of silicone. [7] Scraper device according to one of the preceding claims, characterized by that the scraping device is flat, in that it only extends up to 5 millimeters, preferably only up to 3 millimeters, beyond the edge of the opening. [8] Scraper device according to one of the preceding claims, characterized by that the scraper device is arranged to be removable from the edge of the opening and reusable. [9] Tool for manufacturing a stripping device according to one of the preceding claims.

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