BE1024736B1 - CONTINUOUS GROOVE - Google Patents

Abstract

Method for producing a brick, the method comprising the following steps: - provided with an open mold defined by a bottom and several upright walls; - inserting a clay lump into the open mold so that the clay lump mainly fills the mold; - cutting off excess clay at the open side of the open mold so that a mold is formed in the mold with a shape related to the open mold; - removing the clay mold from the mold; - baking from the clay form to the brick; wherein the open mold contains at least one raised fin on its inner side which extends continuously over the bottom and over at least one of the raised walls of the open mold.

Description

(73) Holder (s):

NELISSEN STONE FACTORY N.V.

3620, LANAKEN

Belgium (72) Inventor (s):

VANDEBEEK Roel 3630 MAASMECHELEN Belgium (54) CONTINUOUS GROOVE (57) Method for producing a brick, the method comprising the following steps: - provided with an open mold defined by a bottom and several upright walls; - inserting a clay block into the open mold so that the clay block mainly fills the mold; - cutting off excess clay at the open side of the open mold so that a mold is formed in the mold with a shape related to the open mold; removing the clay mold from the mold; - firing from the clay mold to the brick; wherein the open mold contains at least one upright fin on its inner side which extends continuously over the bottom and over at least one of the upright walls of the open mold.

3a

BELGIAN INVENTION PATENT

FPS Economy, K.M.O., Self-employed & Energy

Publication number: 1024736 Filing number: BE2016 / 5860

Intellectual Property Office

International classification: B28B 7/00 B28B 13/02 Date of issue: 06/19/2018

The Minister of Economy,

Having regard to the Paris Convention of 20 March 1883 for the Protection of Industrial Property;

Having regard to the Law of March 28, 1984 on inventive patents, Article 22, for patent applications filed before September 22, 2014;

Having regard to Title 1 Invention Patents of Book XI of the Economic Law Code, Article XI.24, for patent applications filed from September 22, 2014;

Having regard to the Royal Decree of 2 December 1986 on the filing, granting and maintenance of inventive patents, Article 28;

Having regard to the application for an invention patent received by the Intellectual Property Office on 16/11/2016.

Whereas for patent applications that fall within the scope of Title 1, Book XI, of the Code of Economic Law (hereinafter WER), in accordance with Article XI.19, § 4, second paragraph, of the WER, the granted patent will be limited. to the patent claims for which the novelty search report was prepared, when the patent application is the subject of a novelty search report indicating a lack of unity of invention as referred to in paragraph 1, and when the applicant does not limit his filing and does not file a divisional application in accordance with the search report.

Decision:

Article 1

NELISSEN STEENFABRIEKEN N.V., Kiezelweg 458, 3620 LANAKEN Belgium;

represented by

PHILIPPAERTS Yannick, Meir 24 box 17, 2000, ANTWERP;

a Belgian invention patent with a term of 20 years, subject to payment of the annual fees as referred to in Article XI.48, § 1 of the Economic Law Code, for: CONTINUOUS GROOVE.

INVENTOR (S):

VANDEBEEK Roel, Langstraat 78, 3630, MAASMECHELEN;

PRIORITY:

BREAKDOWN:

Split from basic application: Filing date of the basic application:

Article 2. - This patent is granted without prior investigation into the patentability of the invention, without warranty of the Merit of the invention, nor of the accuracy of its description and at the risk of the applicant (s).

Brussels, 19/06/2018,

With special authorization:

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BE2016 / 5860

Continuous groove

The invention relates to a method for producing a brick according to the hand-mold principle.

The hand shape principle for producing a brick relates to a method with the following steps:

provided with an open mold defined by a bottom and several upright walls;

inserting a clay lump into the open mold so that the clay lump mainly fills the mold;

cutting off excess clay at the open side of the open mold so that a mold is formed in the mold with a shape related to the open mold;

removing the clay mold from the mold;

- firing from the clay mold to the brick.

Bricks that are formed using the hand shape principle are called hand shape bricks. Hand shape bricks are typically used as facing bricks for house making. Hand-molded bricks are known to create a specific visual impression that is mainly caused by the fact that each brick is unique. The way in which the mold fills with the clay as a result of the insertion of the clay lump is always different, so that the outer surface of the hand-molded brick always shows imperfections. These imperfections are desirable and give the brick a unique character.

In the past, hand-molded bricks were made entirely manually. The open mold was usually made of wood. During use, the mold was sprinkled with sand on the inside.

Then, a clay lump is formed which is typically also rolled in sand before throwing the clay lump into the wooden mold with a predetermined force and / or speed. Due to the force and / or speed of the clay clump, the clay will end up with a predetermined impact on the mold, causing the clay to deform and mainly fill the mold. The clay lump typically has a mass that is significantly greater than the mass required to fill the mold. A surplus of clay material will therefore protrude above the mold, on the open side. In a next step, the excess clay is cut at the open side so that the mold contains a clay shape with a shape that is related to the shape of the mold. The skilled person will understand that the mold is formed as a negative of the desired brick. In a further step, the clay mold is removed from the mold, typically by inverting the mold so that gravity pushes the clay mold out of the mold. Because the mold and the outside of the clay lump are sprinkled with sand, the

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BE2016 / 5860 clay is not worth mentioning on the mold, and can easily be removed from it. The clay shape thus obtained is then baked into a brick in a shape that is predetermined and related to the shape of the mold.

For many years, this process has been at least partially automated, with 5 clay clogs being automatically formed and machine-cast in an open mold. The open molds are typically made of metal or a hard plastic to optimize the life of the molds. For small runs of bricks with special shapes, a wooden mold is still made, in which clay clogs are manually inserted.

In recent years, much has been experimented with alternative methods for traditional masonry. In the past, a facade was built by placing bricks in rows on top of each other and connecting them by means of a layer of mortar. The bricks then typically have a height between 5 cm and 8 cm, and the mortar is applied with a layer thickness between 0.5 cm and 1.5 cm. In recent years, experiments have been conducted with glue to replace mortar, with the layer thickness of the glue being only a few millimeters.

Architects are experimenting further with bricks with patterns in the main view side. Such patterns can be obtained in the brick in various ways. However, the possibilities for such patterns are limited because the patterns must be within the surface of the main viewing side. When the pattern extends to the edge of the main view side, a practical problem arises when the corner of a facade is reached with such a brick.

It is an object of the invention to provide a method for producing a brick according to the hand-mold principle, whereby the brick can be designed and used in a facade with greater freedom.

To this end, the method of producing a brick is characterized in that the open mold contains at least one upright fin on its inner side which extends continuously over the bottom and over at least one of the upright walls of the open mold.

The effect of continuously providing an upright fin in the bottom and at least one upright wall of an open mold is unexpected and atypical for hand-molded bricks. In the traditional practice of the method according to the hand-mold principle, and subsequent use of the hand-mold bricks when bricking a facade, the cut side of the clay form the final bottom side of the brick.

This means that the visible sides of the brick, which are visible in a facade when the brick is placed with a cut side of the clay shape downwards, are formed by the sides of the brick that adjoin the upright walls in the open mold. The method for producing a brick according to the invention aims explicitly

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BE2016 / 5860 follows this tradition, and aims to form the main facing side of the brick through the bottom of the open mold. This is atypical in the field of hand-formed bricks.

In theory, it would be possible to add additional steps to the method in which, for example, between the removal of the clay mold from the mold and the baking of the clay mold, predetermined patterns are applied in the visible side and the front side of the brick. However, this would be cumbersome and labor-intensive, and would require significant intervention in existing systems. Because according to the invention a continuous pattern is provided in the bottom and in one of the upright side walls, and because the bottom of the mold corresponds to the main facing side of the brick, a pattern can advantageously be formed in the main facing side and in the front side of the brick. This allows to form the bricks with a pattern in the main face side that continues in at least one end face on a traditional machine with a traditional sequence of steps without the need for post-processing or additional steps. As a result, such a brick can be manufactured economically.

Preferably, the at least one upright fin is arranged in a visual pattern in the bottom of the mold, which visual pattern continues into at least one upright wall of the mold. By passing the visual pattern from the bottom of the mold into at least one upright wall of the mold, the visual pattern that forms in the brick will also extend from the main face side of the brick to the side face of the brick. This allows use of the brick on a corner of a wall while the optical effects resulting from the grooves run from the front to the side of the facade. In other words, the visual effect will run around the corner. The possibilities for designing such patterns are therefore considerably greater because, unlike before, the patterns no longer have to be within the surface of the main view side. The pattern may extend to the edge of the main view side, and from there extend continuously to the side view side.

Preferably, the at least one upright fin extends from the inside of the mold to a height of at least 2 mm above the inside. By extending the upright fin upward by at least 2 mm, the groove will be formed in the brick corresponding to it, which groove extends from the main face side to the side face of the brick. Furthermore, the fin preferably has a height which is less than 7 mm. Tests have shown that the height of the fin, which determines the depth of the groove, affects the perception of a person who is looking at the exposed side of the brick. By giving the fins a height of more than 2 mm, the groove is typically perceived as a subdivision

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BE2016 / 5860 of the stone. By manufacturing the groove smaller than 7 mm, simple realization can be achieved without technical complications while the optical illusion is maximized.

Preferably, the at least one of the upright walls consists of one upright wall, the other of the multiple upright walls being flat. By patterning only one of the upright walls, removing the brick from the mold will be noticeably easier. The clay shape can then move out of the mold away from the upright wall with the pattern by a translation movement or by a combined translation and rotation movement, so that the pattern remains optimally reflected in the clay shape.

Preferably, the bottom of the mold is substantially rectangular and the at least one upright fin extends along the long side of the rectangle. Bricks are typically used in a facade with their long side according to the direction of the rows, which is the mainly horizontal direction of the facade. By also shaping the fins in this direction, the height of the stone is optically reduced. For example, when a fin is formed in the center of the rectangle, the stone gives the appearance of two stones of equal height placed on top of each other. Those skilled in the art will understand that the fin can be formed at different positions to give the impression of being stones of different heights.

Preferably, the upright fin extends along at least one line from the short side of the rectangle to an opposite short side of the rectangle, the at least one of the upright walls being formed by a wall adjacent to the at least one of the short sides of the rectangle. Preferably the at least one line is straight. Tests have shown that on the one hand this is easily achievable when forming the hand-molded brick and on the other hand it creates an optimal visual effect when a facade is made with the bricks.

Preferably, the line continues across at least one of the upright walls in a direction substantially perpendicular to the bottom of the mold. By running the upright fin substantially perpendicular to the bottom of the mold over the upright wall, removal of the clay form from the mold will simplify considerably. Namely, the clay shape is ideally removed by a movement that is essentially perpendicular to the bottom of the mold.

By allowing the upright fin to extend in the side wall parallel to the removal direction for removing the clay mold from the mold, the clay mold will not be affected by the upright fin in the side wall when moving out of the mold. Namely, the direction of movement and the direction of the upright fin are the same.

The invention further relates to a brick obtained by carrying out the method according to the invention.

The invention will now be described in more detail with reference to an exemplary embodiment shown in the drawing.

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In the drawing:

Figure 1 shows the steps for hand-molding a brick; figure 2 shows an open mold from the method according to the invention; figure 3 shows a section of an upright fin; and figure 4 shows some exemplary embodiments of the invention.

In the drawing, the same or analogous element is assigned the same reference numeral.

Figure 1 illustrates the basic steps of the brick hand molding method. As already explained above, the present invention is particularly applicable in such a method for producing hand-molded bricks. In the first instance, the traditional method for hand-shaping bricks will be explained with reference to figure 1. The invention will then be explained with reference to the further figures, and it will be explained how the invention is surprisingly compatible with the traditional method for hand-forming stones. Unless otherwise stated, the features and steps for the traditional hand-molding of bricks explained with reference to Figure 1 will be an integral part of the method of the invention.

Figure 1A shows an open mold 1. The open mold 1 contains at least a bottom 2 and a plurality of side walls 3 that rise up from the bottom to form an open cavity. In figure 1A, a mold 1 is shown in the form of a traditional brick. The open mold 1 from figure

1A therefore shows a substantially rectangular bottom 2, where an upright side wall 3A, 3B, 3C and 3D is formed at each side of the rectangle. Thereby the side walls 3A and 3D are formed at the short sides of the rectangle of the bottom 2. The side walls 3B and 3C are formed at the long sides of the rectangular bottom 2. It will be clear to a skilled person that the open mold 1 may have different sizes and shapes, the sizes and shapes of the open mold 1 determining the final shapes and sizes of the bricks formed therein. As one skilled in the art will understand, one main condition is preferably fulfilled in the design of the open mold, this is that the opening at the location of the open side has a shape and dimensions which allows the entire clay shape to be able to escape from the open mold 1 via the opening. be removed. In line with this condition, the side walls 3 are also preferably formed to allow removal of the brick from the open mold through the open side thereof. The removal step is illustrated in Figure ID.

Figure 1A further illustrates a clay lump 4. A lump is defined as a shapeless mass. A clay lump 4 is thus defined as a formless mass in which the mass mainly contains clay. The clay block 4 preferably has a volume which is noticeably larger than the volume required to fill the open mold properly. The

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BE2016 / 5860 clay clog 4 is traditionally thrown into the open mold 1, manually or by machine. Insertion is defined as moving the clay lump 4 to the open mold 1 with a predetermined minimum force and / or speed such that the clay lump 4 at least partially fills the open mold 1. The predetermined force is illustrated with arrow F in figure 1A. This is easily achievable in practice by bringing the clay lump 4 to a predetermined height h above the open side of the open mold 1, after which the clay lump is released so that it falls into the open mold 1 from the predetermined height h. In addition, the clay lump 4 can be guided during the fall movement to optimize, for example, the fall direction and / or the fall trajectory for filling the open mold 1. Furthermore, the clay lump can be slowed or accelerated during the fall movement to fill the open mold. 1.

Figure IB shows a cross section of an open mold and a clay lump 4 after the clay lump has been thrown into the open mold. Preferably, the method between the step of figure 1A and the step of figure 1b further comprises applying a sand layer on the inside of the open mold 1 and / or on an outside of the clay mold 4. The sand has several functions. By inserting the clay block 4 into the open mold 1, the sand is pressed at least partly into the clay, so that it forms part of the final brick. In particular, when the clay has a first color, and the sand has a second color different from the first color, a unique visual impression is obtained. A second effect relates to the removal of the clay from the open mold 1, wherein the sand significantly reduces the friction between the open mold 1 and the clay. Without a sand layer on the outside of the clay clump 4 and / or on the inside of the open mold 1, clay has a strong tendency to stick to the bottom 2 and walls 3 of the open mold 1, so that the clay is removed from the mold 1 is difficult.

In figure IB, the clay block 4 is indicated with reference number 4 '. In addition, Figure IB illustrates that the clay shape 4 'has changed in shape relative to the clay shape 4 of Figure 1A.

This is the result of the deformability of the clay on the one hand and the force F and / or speed with which the clay clump 4 is thrown into the open mold 1 on the other. By inserting the clay block 4, an impact is created between the clay and the open mold 1, which results in the clay block 4 deforming. By deforming, the clay block fills almost the entire open mold 1.

Thereby figure IB illustrates how the clay lump 4 has a first segment 5 and a second segment 6. With the first segment 5, the clay fills the open mold 1. This first segment 5 is also called the clay mold because it is the part of the clay lump 4 that takes the form of the open mold 1. The second segment 6 is the part of the clay block 4 which extends above the open mold 1. The clay from the second segment 6 is also called the surplus clay, and is the direct result of the clay lump 4, which is considerably larger in volume than the content of the open mold 1.

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Figure IB illustrates how the clay 5 is pressed against the bottom 2 and the side walls 3B and 3C. There is typically sand between the bottom 2 and the clay and between the side walls 3B and 3C and the clay. Also, the clay does not adhere flawlessly everywhere to the bottom 2 and the side walls 3, due to the insertion of the clay lump 4. This is because the clay lump 4 does not have a controlled shape, and because insertion implies that there is no complete control over the filling the mold 1. This irregular and uncontrolled aspect of the filling of the mold 1 is desirable, and gives the hand-molded brick a unique character.

Figure 1C illustrates cutting off the excess clay, indicated by arrow 10.

The term cut is broadly interpreted in the context of this invention, and includes cutting, sawing, grinding, tearing or any other way of separating the first segment 5 and the second segment 6 from the clay lump 4 ". In figure 1C the clay shape is indicated with reference number 8, and the surplus clay is indicated with reference number 9. The cutting line is indicated in figure 1C with reference number 7. As described above, the clay shape 8 is at the bottom 2 and the side walls 3 uniquely shaped by the sand and by insertion. At the location of the open side

7, the clay shape 8 does not have a notably unique shape. In practice, the cutting line 7 forms a regular, typically smooth surface with no sand pressed into the clay. This side 7 typically forms a brick side with an undesired visual character. The cut side 7 of the clay mold 8 is therefore typically used in practice as the bottom of the brick. In this aspect, the method of the invention differs from the traditional method, as will be explained below.

Figure ID illustrates with arrow 11 the removal of the clay mold 8 from the open mold 1. In practice, the open mold 1 with the clay mold 8 of figure 1C is turned over, after which the open mold 1 is lifted up, while the clay mold 8 is lifted by the gravity remains. By turning the cut side 7 of the clay mold 8 comes to lie at the bottom, indicated in figure 1 by brick side 12F. In this position, the clay mold 8 can be baked into a brick.

Since the clay mold 8 is with its cut side 12F down, no significant pressure will be exerted during firing on the unique sides of the brick, being side 12A which is related to the bottom of the open mold, being sides 12E, 12D, 12C and 12B which are respectively related to the upright side walls 3A, 3B, 3D and 3C of the open mold 1.

As already explained above, these side walls of the brick 1 are formed with a unique character, so that it is advantageous not to exert any further force on these sides during baking.

Figure IE shows a facade 13 that is built up with several bricks that have been formed according to the method described above. Figure IE particularly illustrates a corner of a facade 13, which shows that two sides of the brick

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BE2016 / 5860 are visible at the corner. More specifically, the longitudinal side 12B and a front side 12C will be visible. According to the traditional method, the longitudinal side 12B which forms the main visible side of the brick corresponds to a side which abuts a long side wall 3B or 3C of the open mold 1 of figure 1A. The face end face corresponds to a side that abuts a short side wall 3A or 3D of the open mold 1 of figure 1A. As will become clear below, the invention herein deviates from the traditional method.

Figure 2 shows an embodiment of an open mold used in the method according to the invention. The open mold 1 of Figure 2 corresponds in many respects to the open mold of Figure 1A such that the open mold of Figure 2 is compatible with the method described above. The open mold 1 of figure 2 differs in that the bottom 2 is provided with at least one upright fin 14. Preferably, the upright fin 14 extends in one piece to a corresponding upright fin 14 at the location of at least one side wall 3. In the case of Figure 2, two upright fins 14 run from the bottom 2 to one upright wall 3A.

It will be clear that the continuous passage is a functional characteristic and not necessarily a physical characteristic of the mold 1. The upright fin 14 can be made of several parts which are interconnected and / or cooperate in such a way that the parts functionally as one upright fin 14 can be considered.

The upright fins 14 aim to form a groove in the clay mold 8 at the bottom and the side wall 3A. As described above, this groove creates the optical illusion that the brick formed consists of several individually formed bricks. The open mold 1 from figure 2 differs further from the open mold from figure 1 in its intended use. In the open mold of figure 2, the bottom 2 of the mold 1 is formed, i.e. provided with an outer shape and dimensions, to form the main visible side of the finally formed brick. In contrast, the bottom 2 from the open mold of Figure 1A is formed to form the top of the final brick formed. The effect of this is further explained with reference to figure 4.

Figure 3 shows a cross-section of a preferred embodiment of an upright fin 14. Figure 3 illustrates that the upright fin 14 extends above the bottom 2 with a height 15. The height 15 is preferably at least 2 mm, more preferably at least 3 mm , and is preferably maximum 7 mm, more preferably maximum 6 mm. Most preferably, the height is about 4 mm. Figure 3 further illustrates that the upright fin tapers upward. At the bottom 2, the upright fin 14 has a width 16 greater than the width 17 at the top of the fin 14. Preferably, the width 16 is about 3 mm, while the width 17 at the top preferably is about 2 mm. This is a preferred embodiment, and it will be appreciated that the upstanding fin 14 is broad in width

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BE2016 / 5860 embodiment is not limited in dimensions. Preferably, the upright fin 14 has an average width over its height of less than 7 mm, more preferably less than 5 mm.

In figure 3, the upright fin 14 is shown with the bottom 2 as the basis for the upright fin 14. The person skilled in the art will understand that the upright fin 14 at the side wall 3 is analogously formed.

The upright fin 14 is preferably formed from metal. Tests have shown that when the upright fin 14 is formed of metal, a high resistance to wear can be obtained. Also, the fin 14 of the above-mentioned dimensions may be formed with sufficiently high strength. The metal fin 14 can be integrally formed with a metal bottom 2 or a metal wall 3. Alternatively, the metal fin 14 is embedded in a hard plastic layer, which functions as bottom 2 or as wall 3.

Figure 4 shows three different embodiments of the open mold, showing its effects on the brick formed with the mold. The brick is then indicated with reference numeral 21. The brick 21 always has a main view side 18 and a front view side 19, which correspond respectively to the brick view sides 12B and 12C of figure IE.

Figure 4A shows an embodiment in which the bottom 2 has two parallel upright fins 14 running in the longitudinal side of the bottom 2. These fins 14 are continuous in one short side wall 3. The effect of this is that a brick 21 can be formed with grooves 20 extending continuously from a main face side 18 to a front face side 19. As described above, the optical illusion is created that brick 21 of Figure 4A consists of three bricks stacked one on top of the other. By positioning the upright fins 14 as illustrated in Figure 4A, removal of the clay mold 8 from an open mold 1 (as shown in Figure ID) is simple because the removal direction is parallel to the upright fins 14, especially on site of the side wall 3. Furthermore, the fins 14 of figure 4A are formed substantially parallel to the insertion direction of the clay lump 4 in the open mold, so that the upright fins 14 are loaded substantially straight and evenly. This noticeably increases the life of the mold 1. It will be appreciated that the upright fins 14 can continue to extend continuously across the sidewall overhanging the sidewall shown, so that the two front face sides of the brick have the grooves.

In this context, it is noted that if upright fins were to be placed in the mold of Figure 1A at the sides that form the main face side and the front face side, these are the sides 3B and 3A, on the one hand removing the clay mold from the mold would be virtually impossible and, on the other hand, filling the mold by inserting the clay would be difficult because the fins would be formed transverse to the throwing direction.

Figure 4B shows an alternative embodiment in which an upright fin 14 extends diagonally across the bottom and diagonally across a side wall. When ejecting the

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BE2016 / 5860 clay mold from such a mold, the clay mold will at least partially make a rotational movement away from the side wall 3 with the diagonal fin 14. With this mold, a brick 21 can be obtained which generates a visual impression consisting of several pyramidal bricks.

Figure 4C shows a further alternative embodiment, in which not only 5 upright fins 14 are placed in the longitudinal direction, but also in the transverse direction, at least at the location of the bottom 2. As a result, a brick 21 can be obtained in which the main view side has a pattern, in this example is divided into several Segments, both horizontal and vertical.

The examples of Figure 4 have been added for illustrative purposes only, and will demonstrate to those skilled in the art that many possibilities exist for designing and creating visual impressions in hand-molded brick. In addition, horizontal, vertical and transverse fins 14 can be combined depending on the intended visual effect. Since the bottom 2 of the open mold forms the main face side, which is atypical in the brick hand molding process, these optical effects can be obtained without the efficiency of the brick molding process illustrated in Figures 1A to ID, is reduced. In particular, no significant post-processing or intermediate steps will be required. Provided it is provided with an adapted mold as illustrated in Figure 2 and in Figures 4A-4C, existing machines can be used for the manufacture of bricks according to the invention.

Based on the description above, those skilled in the art will understand that the invention can be practiced in different ways and on different principles. In addition, the invention is not limited to the above-described embodiments. The above-described embodiments, as well as the figures, are merely illustrative and serve only to enhance the understanding of the invention. Therefore, the invention will not be limited to the embodiments described herein, but is defined in the claims.

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Legend of the figures

1. open mold

2. bottom

3. side walls

4. clay clog

5. first segment clay block

Second segment clay block

7. cut side

8. clay mold

9. excess clay

10. cut

11. Delete

12. she of the brick

13. facade

Upright fin

15. height of upright fin

16. width of base upright fin

17. width top upright fin

18. main view side

19. front view side

20. grooves

21. brick

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Claims (13)

Conclusions A method of producing a brick, the method comprising the following steps: 5 - provided with an open mold defined by a bottom and several upright walls; inserting a clay lump into the open mold so that the clay lump mainly fills the mold; cutting off excess clay at the open side of the open mold so that a mold is formed in the mold with a shape related to the open mold; 10 - removing the clay mold from the mold; baking from the clay mold to the brick; characterized in that the open mold contains at least one upright fin on its inner side which extends continuously over the bottom and over at least one of the upright walls of the open mold. 15 2. The method according to claim 1, wherein the at least one upright fin also has a visual pattern arranged in the bottom of the mold, which visual pattern continues into at least one upright wall of the mold. The method according to any of the preceding claims, wherein the at least one upright fin extends from the inside of the mold to a height of at least 2 20 mm above the inside. Method according to one of the preceding claims, wherein the at least one of the upright walls consists of one upright wall, wherein the other of the multiple upright walls are formed flat. A method according to any one of the preceding claims, wherein the bottom of the mold is substantially rectangular and wherein the at least one upright fin extends along the long side of the rectangle. The method of claim 4, wherein the at least one upright fin further extends at least one line from a short side of the rectangle to an opposite short side of the rectangle, the at least one of the upright walls being formed by a 30 wall adjacent to at least one of the short sides of the rectangle. The method of claim 7, wherein the at least one line is straight. The method of claim 8, wherein the line continues across the at least one of the upright walls in a direction substantially perpendicular to the bottom of the mold. The method according to any of the preceding claims, wherein the at least one upright fin has a width less than 4 mm. 2016/5860 BE2016 / 5860 The method of any of the preceding claims, wherein the at least one upright fin has a height less than 7mm. A method according to any preceding claim, wherein the mold is formed such that the bottom of the mold forms the main facing side of the brick. 5 A method according to any of the preceding claims, wherein the at least one upright wall of the mold forms the side view side of the brick. Brick obtained by performing the method according to any of the preceding claims. BE2016 / 5860 BE2016 / 5860 _bE 20 ^ ⁶⁰ 2016/5860 BE2016 / 5860 Continuous groove