DE9106156U1 - Paint grid insert for paint containers - Google Patents

Abstract

A grid insert for a paint container of high-viscosity wall paint is proposed, in which the total surface area of the webs of the grid insert accounts for a maximum of 35% of the total surface area of the grid insert. <IMAGE>

Description

Paint grid insert for paint containers

The invention relates to a paint grid insert which rests on highly viscous wall paint (“solid paint”) in paint containers.

It is known to place scraper devices on the paint surface in paint containers, through whose openings the paint is supposed to reach the surface of the paint roller when the paint roller is pressed on. For example, EP O 151 876 proposes the use of a so-called membrane, the openings of which have an average dimension of more than 5 mm. The membrane is supposed to be held to the paint surface by a tight fit with the internal dimensions and a relatively wide edge area without openings. In addition, it was proposed to provide guide elements on the membrane and container in order to prevent the membrane from jamming when it is lowered.

This design of the membrane results in dead edge areas that cannot be used to absorb paint by the paint roller. The membrane offers relatively high resistance to the pressure of the paint roller, as the paint can only be forced through the relatively small openings in the middle area. In order to achieve a good paint application on the paint rollers, certain requirements are placed on flexibility and rigidity, depending on the paint to be used.

This is where the invention comes in, the aim of which is to create a simple way to evenly apply paint to paint rollers when using highly viscous wall paint ("solid paint").

According to the invention, this object is achieved by the features specified in the characterizing part of claim 1.

Advantageous further developments and embodiments of the invention emerge from the subclaims.

The very simply designed paint grid insert ensures that the relatively small area of the web resting on the paint surface, in conjunction with the almost constant width of the web, ensures that the paint is evenly absorbed onto the paint roller through the relatively large openings in the grid. There are no dead edges, i.e. no areas where no paint can be absorbed. It is also possible to pick up and apply paint directly from the paint container with a brush without any additional equipment.

The color grid insert according to the invention is easy to manufacture and uncomplicated to handle. It can be used in any sufficiently large container. A guide device on the container wall is not required.

Applying the paint evenly to the paint roller requires only a small amount of skill, as even light pressure is enough to press the paint grid insert into the paint. The relatively large, evenly arranged openings allow the paint to easily reach the surface of the paint roller and can be picked up there. The bars of the paint grid insert have a stripping and spreading effect. However, if the pressure of the paint roller on the paint grid insert is too strong, the paint grid insert is quickly pressed into the paint, and the paint also quickly reaches the surface of the paint roller through the openings and comes into almost complete contact with it, so that a sharp increase in force is required to press the paint roller even deeper into the paint, which indicates that the pressure applied was too great.

The invention will be explained in more detail below using exemplary embodiments. In this case:

Fig. 1 a complete color grid insert;

Fig. 2 a cross section through a web

of the color grid insert, and

Fig. 3 shows another cross-sectional shape of a web.

In a rectangular paint container with internal dimensions of 220 x 260 mm, a paint grid insert with dimensions of 213 x 255 mm is placed on top of the paint. During transport or storage, a film is placed between the paint and the paint grid insert to prevent the paint from drying out.

The paint grid insert has a circumferential bar 1 with rounded corners and a constant base width of 4 mm. Between this circumferential bar 1 there are nine additional bars 1 that intersect diagonally from both long sides. These bars 1 are at a constant distance from each other and form rhombus-shaped and triangular openings at the edge through which the paint reaches the paint roller. With a bar height of 5 mm and a bar width of 4 mm, i.e. an almost square ratio, the highly viscous paint is evenly applied to the paint roller.

In the cross-sectional shape of the webs 1 shown in Fig. 2, the web base surface 3 with its sharp edge to the web side surface 2 offers quite a lot of resistance when the color grid insert is pressed into the paint. The angle α between the web base surface 3 and the web side surface 2 should not exceed, and preferably be slightly less than 90, so that the paint pressed through the openings between the webs 1 can be well distributed.

For paints with slightly lower viscosity, a web cross-sectional shape as shown in Fig. 3 is

cheaper. The concave shape of the base surface 4 provides greater resistance to the pressing of the paint grid insert into the paint.

Favorable scraping conditions and less roller wear are achieved by the triangular or trapezoidal cross-sectional shape with the rounded tip of the web. The rounding of the tip should have a relatively large radius.

Claims (8)

Protection claims 1. Paint grid insert for paint containers with high-viscosity wall paint, characterized, that the proportion of the total web base area of the color grid insert makes up a maximum of 35% of the total area of the color grid insert. 2. Color grid insert according to claim 1, thereby characterized in that the width of the webs (1) is constant. 3. Color grid insert according to claim 1 and 2, characterized in that the web base surface (3) flat and sharp-edged to the web side surface (2) is trained. 4. Color grid insert according to claim 1 to 3, characterized in that the web base area (3) and the web side surface (2) enclose an angle a of maximum 90. 5. Color grid insert according to claim 1 to 4, characterized in that the web base area (4) has a concave cross-section. 6. Color grid insert according to one of claims 1 to 5, characterized in that the webs have an almost triangular cross-section with rounded have a tip. 7. Color grid insert according to one of claims 1 to 6, characterized in that the webs enclose rhombus-shaped openings. 8. Color grid insert according to one of claims 1 to 7, characterized in that the web width and web height are in the range of 4 to 6 mm.