RU2351465C1 - Method for production of decorative facing material and mold used in it - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention is related to the field of construction items production. Method for production of decorative facing material includes moulding of concrete mix and bulge forming on its open surface. At that moulding includes placement of concrete mix in mold and its vibrocompaction. At that in process of vibrocompaction water loss of concrete mix is retained and prevented from its leaking from sections. Then preliminary leveling and removal of concrete mix surplus is done in mold so that mold occupation with concrete mix is at the level of sides height, afterwards mentioned bulge forming, and then - cutting of molded concrete mix into products. Then products are dried in mold for about a day, stocking several molds one on another. Mold for production of decorative facing material comprises sides, which have identical height. At that they are made of metal bars of square section with the side of 10 mm and are rigidly fixed on lower plate with size of 625×500×1 mm from metal-roll sheet. At that sides and lower plate form two identical rectangular sections of mold. Along the whole length of two sides installed on mold sides, two extensions are installed parallel to each other, every of which is made of metal strip with thickness of 1 mm and width of 20 mm.

EFFECT: method simplicity and increased efficiency of device.

19 cl, 8 dwg, 9 ex

Description

The claimed group of inventions relates to building materials made of concrete mix, namely to the manual production of facing materials with a decorative surface, mainly decorative facade tiles.

Methods for making decorative cladding materials are known. Known, for example, is a method of manufacturing cladding plates (RF patent for invention No. 2036088, IPC 6 В28В 11/00, В28В 7/38, 1995 [1]), which includes preparing a raw mix, processing a mold with a smooth bottom wax grease with a thickness of not more than 30 microns, application to the bottom of the mold of technical foam based on saponified wood resin or gaseous slurry, laying the raw material mixture in the mold, aging, heat treatment and formwork.

The disadvantage of this method is the processing of the mold with a smooth bottom with wax grease, applying to the bottom of the mold technical foam based on saponified wood resin or gaseous suspension. This formation of a decorative surface near the bottom of the mold makes it necessary to soak the raw mix in the mold until it is almost completely cured — another drawback of this method. This significantly reduces the turnover of the form. To ensure a continuous production process should have a sufficiently large stock of forms, which leads to a large material consumption of the means of production necessary for the implementation of the method. The back side of the plate in the specified method is formed on the open upper surface of the raw material mixture in the form. Moreover, small heterogeneities of the mixture itself, especially in combination with heterogeneity of the heat treatment conditions, lead to a curvature of the surface. This leads to the fact that the thus-made plate of small thickness when laid on a flat surface breaks, that is, it becomes unsuitable for decoration and requires replacement.

Another disadvantage of this method and the form used therein is that a separate form is required for each plate. This leads to increased material consumption of the means of production used in the implementation of the method, and low productivity of the method, especially in the manufacture of tiles of relatively small size.

There is also a method of obtaining a decorative front surface of concrete products (RF patent No. 2243890 for an invention, IPC 7 В28В 11/00, 2005 [2]), including the layout of the relief former in the mold, coating it with a moisture-permeable fabric, laying structural concrete. As a relief former, a porous hydrophilic material is used with successively a layer of powder blowing agent and a layer of powder pigment deposited on its surface.

The specified method is simpler than the previous counterpart due to the elimination of the operation of lubricating the mold. However, it is inherent in all other shortcomings and their consequences indicated for the previous analogue.

There is also a known method of manufacturing wall products from lightweight concrete with a front textured layer and the form used in the method (RF patent No. 2288838 for invention, IPC B28B 1/087 (2006.01), Е04С 1/40 (2006.01), 2006 [3]). The method includes:

- preparation of the molding material from a cement-sand mixture with the addition of iron oxide pigments of different colors;

- laying it in a form in the form of a collapsible or removable formwork with a removable technological tray installed in it and previously introduced and compacted by pressing the lower layer of light concrete mixture, including natural or artificial porous fillers;

- installation of the upper punch with a matrix, the size and shape of which are identical to the formwork and the removable technological tray installed in it;

- molding, including the simultaneous compression and vibrocompression of layers in the form.

At the same time, a matrix with a texture print is installed on the punch, which corresponds to the desired pattern or relief of the front textured layer of the product.

The disadvantage of this method and form is collapsibility or removability of the formwork, as well as the presence of a removable technological tray. This complicates the design of the form, reduces its useful life, leads to the presence in the method of additional operations for disassembling or removing the formwork. When applying the specified method and form for the production of tiles, where it is necessary to accurately maintain linear dimensions, this also leads to the need to control the geometry of the form after each assembly-disassembly operation. And this reduces the manufacturability of this method.

Another disadvantage of this method and the form used in it is that each product requires a separate form. This leads to increased material consumption of the means of production used in the implementation of the method, and low productivity of the method, especially in the manufacture of products of relatively small size.

Another disadvantage of this method is the simultaneous operations of squeezing and vibropressing the layers during molding. This leads to the fact that the texture can be formed on the front surface of the product only with the help of a stencil matrix mounted on a punch. This significantly limits the versatility of this method with respect to options for forming textures on the front side of the product.

A device for decorative surface finishing is also known (USSR author's certificate No. 507446 for an invention, IPC 2 В28В 11/00, 1976 [4]), including a self-propelled portal, a roller for compacting concrete, a roll for rolling the relief and a device for applying color solutions, made in the form of hollow cylindrical rolls with holes on the working surface, repeating the pattern of the roll for rolling the relief, and nozzles for supplying color solutions. A method of using said device includes forming a concrete or reinforced concrete panel, installing rolls with flanges on the sides of the mold, moving synchronously rotating rolls along the mold. In this case, the roll for rolling the relief extrudes the profile on the surface of the panel; nozzles installed in hollow rollers apply color solutions through holes; and the last roll for concrete compaction finally smooths the textured surface.

The disadvantage of this device is the design complexity, which does not allow to use all its advantages in a small business.

Another disadvantage of this method and the form used in it is that each product requires a separate form. This leads to increased material consumption of the means of production used in the implementation of the method, and low productivity of the method, especially in the manufacture of products of a relatively small size, such as tiles.

The indicated device for decorative surface finishing and the method of its application are, by the combination of essential features, the closest technical solutions of the same purpose to the claimed group of inventions. Therefore, they are adopted as a prototype of the respectively claimed form for the manufacture of decorative cladding material and a method of manufacturing a decorative cladding material.

The technical problem to be solved by the claimed group of inventions is the development of technological support for a simple method for the manual production of decorative facing material, mainly decorative facade tiles.

The technical result provided by the claimed method of manufacturing decorative facing material is the ability to manually manufacture decorative facing material, increasing productivity (manufacturing in one form at the same time to several dozen products), increasing the turnover of forms.

The technical result provided by the claimed form for the manufacture of decorative cladding material is the possibility of application in the manual manufacture of decorative cladding material.

The essence of the method of manufacturing a decorative cladding material is that the method includes molding the concrete mixture and embossing on its open surface, and molding includes placing the concrete mixture in the mold and its vibration compaction. In this case, a mold with identical rectangular sections is used, the sides of which are made of the same height and at least one side of each section along its entire length is equipped with a extension, the upper face of which is placed above the upper face of the sides. Moreover, the form contains at least two extensions and all of them are placed parallel to each other. At the same time, when vibration compaction, extensions prevent the loss of water by the concrete mixture and prevent it from flowing out of the sections. After vibration compaction, preliminary alignment and removal of excess concrete mixture in the mold is carried out so that the mold is filled with concrete mix at the level of the sides, after which the aforementioned relief formation is performed, and then the molded concrete mix is cut into products. Then the products are dried in the form for about a day, setting several forms on top of each other. In this case, the extensions provide air flow to the products due to the distance of the shapes from each other in height. Dried products are removed from the mold and dried predominantly under normal environmental conditions.

Before placing the concrete mixture in the mold, dye can be added to the mixture and marble chips added. Vibration compaction is preferably carried out using a vibrating table on which the mold is pre-fixed.

It is advisable to pre-align and remove excess concrete mixes using a tightening tool with a rigid, even working rib. The width of the tightening tool is equal to the width of one or more adjacent sections, increased by the width of their sides, and does not exceed the smallest distance between the two extensions. In this case, the tightening tool is installed with a working edge on the upper sides of the sides perpendicular to the extensions and move it along the sides, constantly pressing its working edge to their upper face. The width of the tightening tool is predominantly equal to the width of one section, increased by the width of its two sides. The tightening tool according to a preferred embodiment is a rigid metal plate, the lower working surface of which is held while moving at an acute angle to the direction of movement. It is desirable to perform a metal plate curved in the shape of a corner.

Relief formation can be performed using the following material means:

- using fabric material and a smooth roll. At the same time, the fabric is laid on the surface of the concrete mixture with the formation of folds and rolled with a roll, after which the fabric is removed;

- using industrially produced textured rollers of various reliefs;

- using a roll of flexible polyurethane foam (foam rubber) with large cells;

- using a stencil matrix, the size of which corresponds to the size of the surface of the concrete mixture in one section. In this case, the stencil matrix is briefly applied to the surface of the concrete mixture in each section;

- using a hard brush. In this case, with vertical or slightly inclined movements, the open surface of the concrete mixture is deformed with a brush.

It is advisable to cut the molded concrete mixture into products using a knife, which is vertically inserted alternately into each section of the mold with concrete mixture. In this case, the knife, at least to the height of the concrete mixture layer, is made in the form of a rectangular parallelepiped open at the bottom, divided by partitions into divisions, which, at least by the height of the concrete mixture layer, are made in the form of direct prisms, the lower bases of which lie in the plane of the lower the edges of the knife, and the ends of all partitions from below lie in the same plane, and the external shape and dimensions of the knife in the lower part correspond to the internal dimensions of each section of the form. In this case, to perform cutting, insert the knife into the mold section vertically until it stops, after which it is also vertically withdrawn from the section. These steps are repeated for all sections of the form. The lower bases of the knife divisions can be made in the form of rectangles or curved rectangles. In the latter case, the knife walls have a curved profile, and curved plates are rigidly attached to the inner walls of the knife.

When installing several forms one on top of another to dry the extensions of each higher form, it is permissible to install perpendicular to the extensions of the lower form.

After removing the products from the molds, they are preferably stacked in cassettes, which are stacked. Cassettes can be made of two wooden battens with sides, the height of which is greater than the width of the products. Cartridges mainly perform such a capacity to ensure the convenience of counting the number of products.

The essence of the form for the manufacture of decorative cladding material is that the sides are of the same height, made of metal rods of square cross section with a side of 10 mm and are rigidly fixed to the bottom plate. The bottom plate is made of dimensions 625 × 500 × 1 mm from a sheet of metal. In this case, the sides and the lower plate form two identical rectangular sections of the form. Moreover, along the entire length of two sides located on the sides of the form, two extensions are placed parallel to each other. Each extension is made of a metal strip 1 mm thick and 20 mm wide. The upper faces of the extensions are placed at the same height above the lower plate and above the upper faces of the sides.

The invention is illustrated by the following graphic materials. Figure 1 shows the inventive form for the manufacture of decorative cladding material, figure 2, 3 - scheme of preliminary alignment and removal of surplus, figure 4 is a diagram of the cutting molded concrete mixture into products (with the tearing of the knife), figure 5, 6 - knives according to examples 8 and 9 of the method, respectively, bottom view, FIG. 7 is a diagram of an example of placement of molds during drying, FIG. 8 is a cassette for drying products.

The inventive method of manufacturing a decorative facing material is as follows.

A concrete mixture is made, if necessary, a dye is introduced into it. Lay the concrete mixture in N identical rectangular sections (1) of the form (Fig. 1). The sides (2) of the sections (1) are made of the same height and are mounted on the lower plate (3). At least one side (2) of each section (1) is provided with an extension (4) along its entire length. Moreover, the upper face of all extensions (4) is placed at the same height above the lower plate (3) and above the upper edge of the sides (2). The form contains at least two extensions (4) and all of them are placed parallel to each other. The size of the mold is chosen mainly so as to ensure the convenience of moving the mold manually by one worker.

After placing the concrete mixture in the mold, it is vibro-compacted using a vibrating table, on which the mold is pre-fixed. At the same time, extensions (4) inhibit the loss of water by the concrete mixture and its leakage from sections (1). After vibration compaction, preliminary alignment and removal of excess concrete mixture in the mold is carried out so that the mold is filled with concrete mix at the level of the sides (2) (Fig. 2). To do this, use a tightening tool (5) with a rigid, even working rib. The width of the tightening tool (5) is equal to the width of one or more adjacent sections (1), increased by the width of their sides (2), and mainly equal to the width of one section (1), increased by the width of its two sides (2). The width of the tightening tool (5) does not exceed the smallest distance between the two extensions (4). A tightening tool (5) is installed with a working edge on the upper faces of the sides (2) perpendicular to the extensions (4). Then the tightening tool (5) is moved along the sides (2), constantly pressing its working rib to their upper face. The tightening tool (5) in the simplest case can be made in the form of a rigid metal plate (figure 2), the lower working surface of which is kept moving at an acute angle to the direction of movement. For the convenience of manually tightening the excess, the tightening plate is preferably curved in the shape of a corner (Fig. 3).

After this preparation, relief formation is performed on the open surface of the concrete mixture.

Then, the molded concrete mixture is cut into products (Fig. 4). To do this, use a knife (6), which is vertically inserted alternately into each section (1) of the mold with concrete mixture. The said knife (6), at least to the height of the concrete mixture layer, is made in the form of a rectangular parallelepiped open from below, divided by partitions (7) into divisions (8) (Fig. 5). Divisions (8), at least by the height of the concrete mixture layer, are made in the form of direct prisms, the lower bases of which lie in the plane of the lower edge of the knife (6). The shape of the lower base of these prisms is selected depending on the shape that should be given to the final product - facing material. The ends of all partitions (7) below lie in the same plane. The external shape and dimensions of the knife (6) in the lower part correspond to the internal dimensions of each section (1) of the mold (the dimensions of the molded concrete mixture in the mold section (1)). The external dimensions of the knife (6) are smaller than the internal dimensions of the shape section (1) so that they can freely enter the section (1). For cutting, the knife (6) is inserted vertically up to the stop in the section (1), after which it is also vertically removed from the section (1). These actions are performed for all N sections (1) of the form.

After cutting, the articles (9) are dried in the molds for about a day, for which the molds are mounted one on top of the other. In this case, extensions (4) of each superior form can be installed perpendicular to extensions (4) of a lower form (Fig. 7). Extension (4) during drying provides air flow to the products (9) due to the distance of the shapes from each other in height. The rest of the drying is carried out according to the usual technology of drying concrete (Mironov SA, Malinina LA Acceleration of hardening of concrete, 2nd ed., M., 1964 [5]).

Dried products (9) are removed from the molds, for example, using a metal spatula, placed in cassettes, which are stacked, and dried mainly under normal environmental conditions. In this case, the cassettes are made of two wooden battens (10) with sides (11), the height of which is greater than the width of the products (9) (Fig. 8). Cartridges mainly perform such a capacity to provide the convenience of counting the number of products (9), for example 20 products or 1 square meter. m products.

Examples of specific implementations of a method for manufacturing decorative cladding material.

Example 1

To obtain a particularly durable product in the manufacture of concrete mix, marble chips are added to it.

Example 2

When implementing the method, a metal mold is used, 625 mm long, 500 mm wide, and a side height of 10 mm. The bottom plate (3) is made of a metal sheet 1 mm thick. The form contains two sections (N = 2). The weight of the mold is 4.5 kg.

Example 3

The relief formation is performed using a fabric material and a smooth roll. At the same time, they lay the fabric on the surface of the concrete mixture and roll it with a roll. The fabric is predominantly stacked so that folds are formed when the roll is rolled over it. A roll is used with a width approximately equal to the distance between the extensions (4) of the shape and less than this distance so that the roll freely enters between the extensions (4). Rolling is performed so that the roll rests on the sides (2) of the mold. After rolling, the fabric is removed.

After the actions indicated in this example, the surface of the concrete mix acquires a relief of texture and fabric folds. Additionally, the fabric collects excess water from the surface of the concrete mixture, contributing to the curing of the mixture and faster shaping and fixing the relief on the specified surface.

Example 4

Relief formation is performed using industrially produced textured rollers of various reliefs. In this case, the rollers in the usual way of their application are rolled on the surface of the concrete mixture in various directions, depending on the desired artistic result.

Example 5

Relief formation is performed using a roll of elastic polyurethane foam (foam rubber) with large cells. Use a roller as in example 4, rolling it on the surface of the concrete mixture.

Example 6

For relief formation, a stencil matrix is used, the size of which corresponds to the size of the surface of the concrete mixture in one section (1). The specified matrix-template is briefly applied to the surface of the concrete mixture in each section (1).

Example 7

Relief is performed using a hard brush. In this case, with vertical or slightly inclined movements, the open surface of the concrete mixture is deformed with a brush.

Example 8

For the manufacture of rectangular products using a knife (6) with the lower bases of the divisions (8), made in the form of rectangles (figure 5).

Example 9

In order to give the edges of the product bumps that mimic the "old" stone, use a knife (6) with the lower bases of the divisions (8), made in the form of curved rectangles (Fig.6). The partitions (7) of such a knife (6) have a curved profile, and curved plates (12) are rigidly attached to the inner walls of the knife (6).

In the inventive method for the production of decorative facing material, the claimed technical result: "enabling manual manufacturing of decorative facing material" is achieved due to the fact that the method includes molding the concrete mixture, preliminary alignment and removal of its excess in the form, relief formation on the open surface of the concrete mixture, cutting molded concrete mix on products, drying products in the form for about a day, removing dried products from the mold and their subsequent drying iven. In this case, molding includes the placement of concrete mixture in the mold and its vibration compaction. In this case, a mold with identical rectangular sections is used, the sides of which are made of the same height and at least one side of each section along its entire length is equipped with a extension, the upper face of which is placed above the upper face of the sides. Moreover, the form contains at least two extensions and all of them are placed parallel to each other. At the same time, when vibration compaction, extensions prevent the loss of water by the concrete mixture and prevent it from flowing out of the sections. Pre-alignment and removal of excess concrete mixture in the mold is performed so that the mold is filled with concrete mix at the height of the sides. When drying, several forms are set one on top of the other, and drying is carried out mainly under normal environmental conditions. At the same time, extensions during drying provide air flow to the products due to the distance of the shapes from each other in height. The lack of sophisticated technological equipment, the simplicity of the method and the forms used makes it possible that the inventive method can be carried out in conditions of small production of building materials and will find wide application in the field of manufacturing decorative facing products.

The technical result of "increasing productivity (manufacturing in one form at the same time up to several dozens of products)" is achieved due to the fact that the method includes molding the concrete mixture, cutting the molded concrete mixture into products, drying the products in the mold for about a day, removing the dried products from the mold and their subsequent drying. In this case, a mold with identical rectangular sections is used, the sides of which are made of the same height. The possibility of manufacturing several products in one form leads to a decrease in the material consumption of forms and the number of technological cycles per one product, which leads to a decrease in the energy consumption of the method and a decrease in the frequency of technological cycles. This leads to increased productivity.

The technical result "increasing the turnover of molds" is achieved due to the fact that the method includes molding the concrete mixture, drying the products in the form for about a day, removing the dried products from the mold and their subsequent drying, mainly in normal environmental conditions. The specified technical result is achieved due to the fact that the form is freed from the products immediately after they acquire sufficient strength, but before they are completely dried. In this case, the drying of the products is already outside the forms.

The inventive form for the manufacture of decorative facing material contains (Fig. 1) a lower metal plate (3) with dimensions of 625 × 500 × 1 mm with flanges (2) of the same height fixed on it. The size of the form is chosen so as to ensure the convenience of moving the form manually by one worker. The sides (2) are made of metal rods of square section with a side of 10 mm. These rods are rigidly connected to the bottom plate (3) by a threaded connection. The sides (2) and the lower plate (3) form two identical rectangular sections (1) of the form. Along the entire length of the two sides (2) located on the sides of the form, two extensions (4) are placed parallel to each other. The extensions (4) are made of metal strips 1 mm thick and 20 mm wide and placed on the sides of the mold. Moreover, the upper face of all extensions (4) is placed at the same height above the lower plate (3) and above the upper edge of the sides (2).

The inventive form for the manufacture of decorative cladding material is implemented from industrially produced materials, can be assembled in any workshop, including at home, and will be widely used in the production of building materials.

Information sources

1. RF patent for the invention No. 2036088, IPC 6 V28V11 / 00, VVV 7/38, 1995.

2. RF patent №2243890 for the invention, IPC 7 В28В 11/00, 2005.

3. RF patent No. 2288838 for an invention, IPC В28В 1/087 (2006.01), Е04С 1/40 (2006.01), 2006.

4. USSR author's certificate No. 507446 for an invention, IPC 2 B28B 11/00, 1976.

5. Mironov S.A., Malinina L.A. Acceleration of hardening of concrete, 2nd ed., M., 1964.

Claims (19)

1. A method of manufacturing a decorative facing material, comprising molding a concrete mixture and embossing on its open surface, the molding comprising placing the concrete mixture in the mold and its vibration compaction, characterized in that they use a mold with the same rectangular sections, the sides of which are made of the same height, at least one side of each section along its entire length is provided with an extension, the upper face of which is placed above the upper face of the sides, and the form contains at least two n add-ons, and all of them are placed parallel to each other, while during vibration compaction, the extensions inhibit the loss of water by the concrete mixture and prevent it from flowing out of the sections, while after vibration-sealing, the surplus concrete mixture is pre-aligned and removed so that the concrete mixture is filled with concrete so that the height level of the sides, after which the aforementioned relief formation is performed, and then the molded concrete mixture is cut into products, after which the products are dried in a mold for about a day, setting several lko forms one on another, wherein the extension provides air flow to the articles by distancing forms from each other in height, after which the dried product is removed from the mold and finally dried, preferably under normal ambient conditions. 2. The method according to claim 1, characterized in that before the placement of the concrete mixture in the form, a dye is introduced into the mixture. 3. The method according to claim 1, characterized in that before placing the concrete mixture in the form, marble chips are added to the mixture. 4. The method according to claim 1, characterized in that the vibration compaction is performed using a vibrating table, on which the form is pre-fixed. 5. The method according to claim 1, characterized in that for preliminary alignment and removal of excess concrete mixture, a constriction tool is used with a rigid, even working rib, and the width of the constriction tool is equal to the width of one or more adjacent sections, increased by the width of their sides, and does not exceed the smallest distance between the two extensions, while the tightening tool is installed with a working edge on the upper sides of the sides perpendicular to the extensions and move it along the sides, constantly pressing its working edge their upper face. 6. The method according to claim 5, characterized in that the width of the tightening tool is equal to the width of one section, increased by the width of its two sides, and the tightening tool is made in the form of a rigid metal plate, the lower working surface of which is held when moving at an acute angle to the direction of movement . 7. The method according to claim 6, characterized in that the metal plate is made curved in the shape of a corner. 8. The method according to claim 1, characterized in that the relief formation is carried out using a fabric material and a smooth roll, while laying the fabric on the surface of the concrete mixture with the formation of folds and rolling it with a roll. 9. The method according to claim 1, characterized in that the relief formation is performed using industrially produced textured rollers of various reliefs. 10. The method according to claim 1, characterized in that the relief formation is carried out using a roll of elastic polyurethane foam - foam with large cells. 11. The method according to claim 1, characterized in that the relief is performed using a stencil matrix, the size of which corresponds to the surface size of the concrete mixture in one section, while the stencil matrix is briefly applied to the surface of the concrete mixture in each section. 12. The method according to claim 1, characterized in that the relief formation is performed using a hard brush, while vertical or slightly oblique movements deform the open surface of the concrete mixture with a brush. 13. The method according to claim 1, characterized in that the cutting of the molded concrete mixture into products is performed using a knife, which is vertically inserted alternately into each section of the mold with concrete mixture, the knife being made at least to the height of the concrete mixture layer in in the form of a rectangular parallelepiped open at the bottom, divided by partitions into divisions, which, at least by the height of the concrete mixture layer, are made in the form of direct prisms, the lower bases of which lie in the plane of the lower edge of the knife, and the ends of all partitions from below harvested in one plane, and the external shape and dimensions of the knife in the lower part correspond to the internal dimensions of each section of the mold, while for cutting, insert the knife into the mold section vertically until it stops, and then also vertically remove it from the section, and the above steps are repeated for all sections of the form. 14. The method according to item 13, wherein the lower base of the divisions of the knife is made in the form of rectangles. 15. The method according to item 13, wherein the knife walls have a curved profile, and curved plates are rigidly attached to the inner walls of the knife, while the lower bases of the knife divisions are made in the form of curved rectangles. 16. The method according to claim 1, characterized in that when installing several forms on top of each other to dry the extensions of each higher form, set perpendicular to the extensions of the lower form. 17. The method according to claim 1, characterized in that after removing the products from the forms they are placed in cassettes, which are installed in a stack. 18. The method according to 17, characterized in that the cassettes are made of two wooden battens with sides, the height of which is greater than the width of the products, and the cassettes perform such a capacity to ensure the convenience of counting the number of products. 19. A mold for the manufacture of decorative facing material containing flanges, characterized in that the flanges have the same height, are made of metal rods of square section with a side of 10 mm and are rigidly fixed to the bottom plate, made in the size of 625 × 500 × 1 mm from a sheet of metal, the sides and the lower plate form two identical rectangular sections of the form, while along the entire length of the two sides located on the sides of the form, two extensions are placed parallel to each other, each of which is made of metal cal strip 1 mm thick and 20 mm wide, and upper faces extensions placed at the same height above the bottom plate and above the top faces of the beads.

Images