Method of making sandwich board of laminate

FIELD: process engineering.

SUBSTANCE: proposed method comprises the steps that follow. Making the multiple first layers (1a, 1b, 1c, 1d) of impregnated cellulose fibres. Making the multiple second layers (2a, 2b, 2c, 2d) of impregnated cellulose fibres. Making the wood chipboard (3). Making the set (4) of layers with top facing layer (4a) including first layers (1a, 1b, 1c. 1d) of cellulose fibres with central board (4b) abutting on top facing layer (4a) by its top surface (4b.1) including chipboard (3) and bottom facing layer (4c) abutting on bottom surface (4b.2) of central boars (4b) including second layers (2a, 2b, 2c, 2d) of cellulose fibres. Note here that top facing layer (4a) and/or bottom facing layer (4c) is made so that after escaping out of hot press (5) it features thickness of at least 2 mm. Displacement of said set (4) of layer in hot press (5). Pressing of said set (4) of layer in hot press (5) at increased pressing force and temperature for making multilayer board (6) and discharging said board (6) from hot press (5).

EFFECT: lower products costs.

18 cl, 2 dwg

 

The invention relates to a method of manufacturing a multilayer plate of the layered material, and a multilayer plate fabricated by this method.

In the prior art there are known various plates on the basis of chipboard for the field of interior decoration, including the manufacture of furniture. As an example, it is necessary to call chipboards, fibre boards (in particular, LDF, MDF and HDF boards), and OSB boards. Requirements for existing bonded plates regulates the standard EN 312. In accordance with this "plates for interior design (including furniture for use in dry areas - type P2)" must be in the range of thickness from 13 to 20 mm and a bending strength of from 13 N/mm2(measured according to standard EN 310). In addition, this standard includes the modulus of elasticity in bending in the transverse direction, i.e. transversely to the plane of the plate, which should be between 1600 N/mm2.

Further, the prior art plate of the layered material. These plates consist of a large number of layers having a core made of paper impregnated with phenolic resin on at least one side of which is provided a decorative paper impregnated with melamine resin, and thus consisting of several layers kits are pressed at high pressing force and an elevated temperature with the formation of the comp is ktoi plate. To improve the wear resistance of the decorative paper may provide another transparent layer of paper, the so-called outer layer of paper. With increased requirements regarding durability and resistance to scratching it can also be equipped with solid particles, such as corundum.

The scope of the plates of the layered material is very diverse. So, these so-called layered materials are now widely used in the manufacture of furniture as a decorative coating surfaces with high load on both surfaces or edges, and in this case, the thickness of the layered materials is below 2 mm Next plate in the form of a so-called compact plates are used as self-supporting worktops, intermediate walls or facings of the walls, as well as in the outer area, for example, for cladding facades, with their thickness in these cases is usually more than 2 mm

For the manufacture of slabs of layered materials described species, usually layers of Kraft paper is usually impregnated with phenolic resin, as forming a core, covered for the formation of the decorative surface of the decorative paper impregnated with melamine resin, and pressed with each other at elevated temperature. When used this temperature range, typically in the region of 130C at unit d is the pressure pressing from 8 to 10 MPa. Typically, in the manufacture of slabs of layered materials are used Newspapers circulating water, which before the opening of the press is cooled plate to reduce the steam pressure available due to the contained residual moisture at high temperatures. Excessively high steam pressure in the cooker at the moment of opening the press could otherwise break the plate.

Thus, the manufactured laminates can then at the next stage, to serve as applications, in particular, to be glued to the substrate, such as wood particle Board, previously described species. But for the manufacture of such composite panels are characterized by relatively high costs and time.

Therefore, the present invention is to develop a method of manufacturing a multilayer slabs of layered materials, which can be reduced manufacturing costs. Goal is the creation of an appropriate multi-layer plate.

The above problem according to the first technical solution of the invention is solved by a method of manufacturing a multilayer slabs of layered materials, which are carried out the following steps:

- preparation of the greater part of the first layers of cellulose fibers with impregnation,

- preparing the most part is which layer of cellulose fibers, equipped with impregnation,

- preparation of chipboard,

- formation of a stack of layers with the upper cladding layer containing the first layers of cellulose fibers with an average shield adjacent to the upper cladding layer in its upper side, containing wood-shaving plate, and the lower cladding layer adjacent to the bottom side of the middle of the shield containing the second layers of the fibers of the pulp, and the upper cladding layer and lower cladding layer is formed so that it after nomination from the press hot pressing has a thickness of at least 2 mm,

- dvizhenie set of layers in the press hot pressing,

- pressing the stack of layers with increasing tonnage and temperature with the formation of multilayered plates and

- nomination laminate from the press of hot pressing.

The specified task according to the second technical solution of the invention is solved by a method of manufacturing a multilayer slabs of layered materials, in particular, by using the above-described method, when carrying out the following steps:

- preparation of the greater part of the first layers of cellulose fibers with impregnation,

- preparation of the greater part of the second layer of cellulose fibers with impregnation,

- preparation of chipboard the plate,

- formation of a stack of layers with the upper cladding layer containing the first layers of cellulose fibers with an average shield adjacent to the upper cladding layer in its upper side, containing wood-shaving plate, and the lower cladding layer adjacent to the bottom side of the middle of the shield containing the second layers of cellulose fibers, and the thickness of the chipboard is chosen so that it is after the nomination of the press (5) hot pressing has a thickness that is at most a factor of 5 greater than the thickness of the upper cladding layer or the lower cladding layer,

- dvizhenie set of layers in the press hot pressing,

- pressing the stack of layers with increasing tonnage and temperature with the formation of multilayered plates and

- nomination laminate from the press of hot pressing.

The specified task according to the third technical solution of the invention is solved by a method of manufacturing a multilayer slabs of layered materials, in particular, by using the above-described method, when carrying out the following steps:

- preparation of the greater part of the first layers of cellulose fibers with impregnation,

- preparation of the greater part of the second layer of cellulose fibers with impregnation,

- preparation of wood-frame echnol plate,

- formation of a stack of layers with the upper cladding layer containing the first layers of cellulose fibers with an average shield adjacent to the upper cladding layer in its upper side, containing wood-shaving plate, and the lower cladding layer adjacent to the bottom side of the middle of the shield containing the second layers of the fibers of the pulp, and the upper cladding layer and lower cladding layer is formed so that the number of layers of cellulose fibers, respectively, at least 12 in the corresponding cladding layer,

- dvizhenie set of layers in the press hot pressing,

- pressing the stack of layers with increasing tonnage and temperature with the formation of multilayered plates and

- nomination laminate from the press of hot pressing.

So, according to the invention the multi-layer slab of layered materials, i.e. multi-layer plate, which also has plates of the layered material, is fabricated with the help of what is contained in a future multi-layer slab of the individual layers is first prepared in a separate form and are superimposed on each other, and a chipboard integrated in the layer structure as a carrier plate or as a medium shield, and then it formed from a large number of unrelated individual who's layers of a stack of layers with integrated wood-shaving plate is pressed during a single pressing with the formation of the multilayer plate. In other words, is produced not only the first slab of layered materials and the second slab of layered materials, which are then connected with wood-shaving plate when the previous gluing, and raw material (separate layers of fibers of the pulp and particleboard) are subjected to only a single pressing process. So no time for pressing the first plate of the layered material, the time for pressing the second plate of the layered material and the time for applying the adhesive. It also reduces the cost of manufacture by reason of the denial of a separate adhesive.

Thus fabricated multi-layered plates are also particularly stable connection between the respective cladding layers, with layers of cellulose fibers, and a medium shield with wood particles. In combination with the characteristic according to which the cladding layers have a thickness of at least 2 mm, and/or a sign that the thickness of the chipboard at most 5 times greater than the thickness of the upper cladding layer or the lower cladding layer, and/or sign, in accordance with which the upper cladding layer and lower cladding layer comprises at least 12 layers of cellulose fibers, can be produced PL is you with high mechanical and technological properties, who, for example, can be used as shelves or grounds shelves at high loads, as slabs formwork in building construction, as the underbody of the truck or carrier overlapping elements for construction using wooden structures, and in the latter case is the minimization of overlapping design and high moisture resistance.

According to the version proposed according to the invention at the stage of formation of a set of layers of the upper cladding layer and lower cladding layer on its side facing away from the middle of the shield is provided with a layer of cellulose fibers, forming a decorative paper. In other words, using the proposed in accordance with the invention a method of decorative paper in advance may be provided within a set of layers, which further reduces manufacturing costs.

Additionally or alternatively, at the stage of formation of a stack of layers on a side of the upper cladding layer and lower cladding layer, facing away from the middle of the shield, can also provide a protective layer against wear, which, in particular, has solid particles, such as corundum, and is mainly a layer of cellulose fibers forming the surface of the paper layer.

According to the other execution is proposed in accordance with the invention method particleboard prepared in the form of particle-, fibrous - OSB-plates. These plates have a relatively high resistance, in particular, high bending strength and high modulus of elasticity in bending and also have the advantage that, for example, in the manufacture of furniture, when two such multi-layered plates are screwed to each other at an angle, on average, the shield can easily installed from the front side and stay simple screws, which are used in the manufacture of furniture. This medium shield thus on the one hand suitable for standard fastening screws in the manufacture of furniture and in addition has the advantage that with this arrangement, the corner screws from the front side is fixed in a multilayer plate, since the average Board consists of wood chips, and in contrast to the existing slab of layered material or a compact stove should not be pre-drilling. When the application is made in accordance with the invention, a multilayer slabs of layered material in the manufacture of furniture thanks to their design and, in particular, integration into the design chipboard, easier to work and decreases the time required for the production of furniture.

Again, according to another implementation provides that the multilayer plate after the nomination of the press is as hot pressing is supplied with a floor, moreover, the step of coating includes coating, printing, coating, powder coating, gluing decorative material, in particular wood veneer or thin plates of stone, decorative film or metal foil or laminate, and/or pressing impregnated with, in particular, impregnated with melamine resin, a decorative paper. Relatively very good offers provided the application of the plots using a digital printing method.

The upper cladding layer and lower cladding layer according to another implementation proposed in accordance with the invention a method is formed so that it after nomination from the press hot pressing has a thickness of at least 2 mm, preferably at least 3 mm, particularly preferably at least 4 mm, Such plates are more resistant, and also, in spite of this even at a time is good communication between the two cladding layers and a medium shield.

Similarly, for reasons of stability, the thickness of the chipboard may further be selected such that the plate after nomination from the press hot pressing had a thickness of 5 times, preferably 4 times more, particularly preferably 3 times the thickness of the top is bocouacolo layer and/or the lower cladding layer.

Finally, just to achieve the increased resistance of the upper and/or lower cladding layer may be formed so that the number of layers of cellulose fibers, respectively, at least 12, preferably at least 18, particularly preferably at least 24 in the corresponding cladding layer.

According to still another implementation proposed in accordance with the invention method, the upper cladding layer and lower cladding layer is made so that the thickness of the upper cladding layer after nomination from the press extrusion greater than the thickness of the lower cladding layer. In other words, by using the proposed in accordance with the invention method, it is possible to prepare along with symmetrically performed also performed asymmetrically layered plates, and also when performed asymmetrically plates are provided due to the relatively large possible thicknesses can hardly be expected noteworthy differences in shrinkage. Despite the asymmetrical design, this multi-layered plate acquires a durable flat surface or keeps its shape well, i.e. excluded warping of the plate.

The material layers of cellulose fibers and wood-shaving plate, and the pressing force, the temperature of the hot press forging the Oia and the temperature of the laminate in a press for hot pressing according to still another implementation proposed in accordance with the invention of the way so coordinated with each other, what the finished multi-layer plate has a bending strength in the transverse direction of at least 30 N/mm2preferably at least 50 N/mm2especially preferably, at least 80 N/mm2and/or modulus of elasticity in the transverse direction of at least 3000 N/mm2preferably at least 5000 N/mm2especially preferably, at least 7500 N/mm2. At the stage of pressing the maximum temperature press hot pressing may be at least 130C., preferably at least 140C., particularly preferably at least 150C. This reflects positively on the stability of the finished laminate and reduces pressing time to a minimum. Due to the high temperature pressing preferred also is the increased pressing force. So at the stage of pressing the maximum pressing force can be at least 15 MPa, preferably at least 19 MPa, particularly preferably at least 23 MPa. Finally, at the stage of pressing the maximum temperature of the multilayer plate may be at least 120C, preferably at least 130C., particularly preferably at least 140C. the Plates, which were produced this way, when it could be loaded very high the th mechanical stress and in many cases could serve as a replacement for existing compact plates.

According to yet another performance after nomination from the press of hot pressing in laminated plate is installed edging profile, in particular, the profile for the connection groove-ridge. In particular, this profile is installed in a wood-shaving plate, i.e. in the middle of the shield, consisting of chipboard material. Material chipboard particularly suitable for a simple way to install is also relatively complex shape of the profile. The area of the facing layer, which is formed by layers of cellulose fibers, if necessary, in particular if you have a profile in wood-shaving plate can be cut exactly in the transverse direction of the plate to the profile in wood-shaving plate could optimally interact with a corresponding profile in the adjacent plate. Thus, then also a few made in accordance with the invention of the sandwich panels can be connected in a planar arrangement. For the case when the above-described at least one facing layer must be laid back in relation to the average shield, for example, a comprehensive profile on average, the shield could optimally interact with the profile of the other plate, also in the formation of a layered structure corresponding to the facing layer of the criminal code is to advetise or be offset to a nearby wood-shaving plate.

According to still another implementation proposed in accordance with the invention method, after nomination from the press of hot pressing and/or during compression of the stack of layers on the surface of the upper cladding layer or the lower cladding layer structure. Can also be applied to the shuttering plate figure a wooden structure or additional milling and/or cutting by laser, so that in the manufacture of decorative concrete to obtain an attractive surface. In principle, it is possible with the help of drawing, cutting with cutters or laser to produce other patterns. For the bottom trucks or the like simple means is applied, the lattice structure to obtain the desired stability against slipping off.

For greater simplification of the manufacturing process, then it may be provided that the layers of cellulose fibre bundle layers are all supplied with the same impregnation. Additionally or alternatively may be provided that all layers of cellulose fibre bundle layers impregnated with phenolic resin. Impregnating one or more layers of cellulose fibers may also contain conductive electric current supplements, in particular salts of organic acids, mostly metal salts. Using p is adlounge in accordance with the invention, a method of manufacturing a laminated plate thus low-cost can adapt to a wide variety of requirements.

According to yet another performance between nomination laminate from the press of hot pressing and phase coating laminate is a pre-processing step laminate, which includes grinding, smoothing, in particular, thermal smoothing of multilayered plates and/or the application of a primer, application of a primer layer and/or multilayer coating of the plate and/or plasma treatment of the surface of the multilayer plate.

The advantage of pre-processing is the possibility of grinding a multilayer plate before coating, allowing obtained significantly smaller tolerances on the thickness than existing extruded laminated materials. In addition, this circumstance is extremely preferable, since thereby it is possible to refuse expensive sheets for pressing. For laminated surface can be applied only high-quality, maintenance-free sheets for pressing, which should be cleaned periodically and from time to time to podnabratsya, for example, re-chromonemata to obtain a continuous surface with the desired degree of smoothness and the desired structure. From these high-quality and maintenance-sheets for pressing use proposed in accordance with ISO what rutenium method and coating at a later stage may be waived.

For more effective interventions to reduce time compression are derived from the ability to provide on one or both sides of complex layers, i.e. between the main part and leaves for pressing, porous permeable to water vapor layer. Resulting roughness of the surface of the main part can again very easily removed during subsequent grinding. Due to the additional layer, for example, non-woven material or a film, in particular of synthetic material, the water vapor arising from residual moisture impregnated layers of cellulose fibers, may come out superior way through the surface of the stack of layers. The internal vapor pressure in emerging layered molding material is reduced, so it can be prevented described gap plate when the press output. This can be achieved a significant reduction of the time of pressing. It is preferable to provide a porous permeable to water vapor layer on both sides, because otherwise, especially when large thicknesses of the plates, there are asymmetric conditions that can lead to warping of the finished plates. Another advantage is re-established, the porous permeable to water vapor layer further is that it acts as separating the film and thereby constantly facilitates easy extraction of the molded product when you exit or press when you open the press.

The method can be carried out using cyclic presses, and continuously operating presses.

Know the use for the manufacture of slabs of layered material cyclically operating a multi-storey presses. Them in one cycle is always pressed a large part of the sets of layers lying between them leaves for pressing. The usual time pressing is approximately 100 minutes. Expensive along with a very high pressing time is also the stacking of different sets of layers and preparing the most part sheets for pressing. The use of cyclic presses according to the prior art is the only possibility of obtaining a higher thickness of the plate. Continuous methods of pressing, as a rule, apply Isobaric dvuhetajnyi press, because available during this relatively short time pressing, limited by the plate thickness maximum of 1.2 mm

Proposed in accordance with the invention method, which allows high temperature pressing, of course, decreases the time of pressing, so that it becomes possible to manufacture proposed in accordance with the invention, multi-layer boards with a thickness of cladding layers, respectively, at least 2 mm in a continuous way is risovaniya. Due to the additional capabilities of the individual surface treatments proposed in accordance with the invention method, it does not require the use of Isobaric dvuhnitochnogo press that under the current production of layered materials already presented the opportunity to produce high-quality solid laminate surface. Local differences in pressure, which in contrast to izobaricheskogo pressing may not occur during Isobaric pressing, would lead to undesirable valaoritou and uneven gloss. But since according to the invention, the coating is carried out on a separate stage, and besides possible special pre-treatment, such as grinding, for the first time for the manufacture of laminated slabs of layered materials can be used isochorically dvuhnitochnyj press. This allows you to have multiple the length of the extrusion, and can therefore provide the required pressing time when the thicknesses of the plates over 5, 12 or even 18 mm

An additional advantage of using izobaricheskogo dvuhnitochnogo press with a length of at least 10 mm, preferably greater than 20 m, especially preferably more than 25 m is variable establishing temperature. So with this type of press, it is possible in order to provide different zones of different temperature pressing. If now at the beginning of the press kit of the layers is heated to a high temperature, which then by the end of the press is reduced, it is already known the effect of reverse cooling, which reduces the internal pressure of the steam in the manufactured plate, which again reduces the risk of cracking in the slab, which is the determining criterion for time compression. This gives another possibility to reduce the time required for the manufacture of multilayer boards.

Due to the fact that under the proposal, in accordance with the invention method, the first laminate can be manufactured by using a continuously operating dvuhnitochnyj presses, they first may be available theoretically infinite length. Using custom made cutting strips from the plate after dvuhnitochnogo press for the first time can be fabricated plates with the thickness of cladding layers, respectively, at least 2 mm or more, almost any length. The only limit is the local host or existing transportation facilities. For the first time can be manufactured multilayer plate over a length of 5 m, preferably more than 8 m, particularly preferably over a length of 10 m

Thanks to simply being able to cut plate mentioned is the size, also cutting possible with comparatively significantly less waste, as sawn after press large format plates can be chosen based on the finished size of the plate, which then will be cutting. Thus, it appears great flexibility in terms of format. In cyclic compression, such is not available, as there is a fixed amount of the surface pressing set the plate size.

Next problem is solved using a multilayer plate, which is manufactured by a process as described above.

Accordingly, the problem can be solved with multi-layered slab of chipboard as a medium shield and two plates of the layered material as cladding layers, in particular, with the above-described multi-layered plate, using the fact that the different layers are connected to each other without mechanical fasteners and/or adhesives.

Finally, the task multilayer slab of chipboard as a medium shield and two plates of the layered material as cladding layers, in particular, with the above-described multi-layered plate, also solved due to the fact that the cladding layers and the average shield pressed directly with each other.

The preferred options are the subject of dependent claims and lyrics by the blow from the above-described method.

Now there are a large number of development opportunities and improvements proposed in accordance with the invention of the method proposed in accordance with the invention, a multilayer plate. In addition, on the one hand, you should refer to the claims that follow, paragraph 1, of the formula, on the other hand to the description of embodiments in conjunction with drawings. In the drawings, show:

1 - set of layers of the multilayer plate according to the present invention; and

figure 2 - schematic representation of the manufacture of multilayer boards.

Figure 1 shows the design of multilayered slabs of layered materials, as it can be according to the embodiment proposed according to the invention method.

Depicts a set of 4 layer consists of the upper cladding layer 4A, adjacent to the upper cladding layer 4A upper side 4b.1 medium shield 4b and adjacent to the bottom side 4b.2 medium shield 4b of the lower cladding layer 4C.

Medium shield 4b here formed of wood-shaving plate 3 in the form of chipboard.

The upper cladding layer 4A and the lower cladding layer 4 in this embodiment are symmetrical, although it could be asymmetrical design. The upper cladding layer 4A has Bo the greater part of the layers 1a-1d from cellulose fibers, supplied by impregnation, and the lower cladding layer has a majority of layers 2a-2d of the cellulose fibers with impregnation. Although there are reasons of clarity, schematically represented by only four layers on each of the facing layer, the exact number in this example is, of course, 12 layers, including decorative paper. In the case of impregnation of speech for all layers of cellulose fibers is about a phenolic resin.

The upper cladding layer 4A and the lower cladding layer 4C on his side, facing away from the middle of the shield 4b, provided with a decorative paper, which is formed respectively in the outer layer 1A of cellulose fibers cladding layer 4A or 4C.

Next on the side of the upper cladding layer 4A and the lower cladding layer 4, facing away from the middle of the shield 4b, provides a protective layer 4d from wear, with integrated solid particles in the form of a covering paper layer, forming a layer of cellulose fibers.

In the present embodiment, the upper cladding layer 4A and the lower cladding layer 4 are respectively a thickness of 4 mm and a chipboard 3, i.e. the average shield 4b, has a thickness of 8 mm, the Total thickness of the multilayer plate with a set of layers according to Fig 1 is approximately 16 mm

Figure 2 shows schematically the manufacture mnogosloino the second plate 6, having described using Fig. 1 design.

To do this here as press 5 hot pressing is provided continuously operating, isochorically dvuhnitochnyj press 7. To download the press 7 is already impregnated Kraft paper 9 in the form of a layer of cellulose fibers, there are a few rolls 8, which layers 9a retracted and directly served to the press 7. In this case we are talking about Kraft paper 9, impregnated with phenolic resin, with a weight of raw paper 150 g/m2and impregnated with resin 67%. When a residual moisture content of 7%, the weight per square impregnated Kraft paper 9 corresponds to 270 g/m2. The upper and the lower layers are formed of the porous layer 10 of the blade 10A of synthetic material. Last after press 7 again removed from the surface of the plate and again wound on the roll 8', to be able to re-use. In order to get a higher plate thickness, and have fewer stations of unwinding the roll may be wound several layers of impregnated paper web 9a. Finally, between the rolls 8 is served chipboard plate 3 in the form of an endless strip 6A.

Press 7 has an effective length of 22.5 m and may in areas with appropriate heating means 11 to be heated to different temperatures and accordingly with the relevant sections 12 pressing can be created in various tonnage. So in this case, the pressing force on the first (front) section 12 of the pressing selected 20 MPa, which is then up to the middle press 7 decreases to about 17 MPa and, from there, is saved. In the last quarter of the length of the press, the pressing force is not already set, and is adjusting the distance, i.e. sets the distance between the conveyor belts 13, to obtain the desired thickness of the slab as possible inside the least tolerance.

After the press 7 is provided by diagonal saw 14, which divides the endless strip 6A to plate the desired length. A separate plate 6 is then cooled to a sub-cooling the sprocket (not shown) and then can be stored in the interim storage area or to proceed directly to further processing.

1. A method of manufacturing a multilayer slabs of layered material in which carry out the following steps:
preparing multiple first layers (1a, 1b, 1c, 1d) of the cellulose fibers with impregnation,
prepare a second set of layers (2A, 2b, 2c, 2d) of the cellulose fibers with impregnation,
preparation chipboard (3),
education kit (4) layers with the upper cladding layer (4A), containing the first layers (1a, 1b, 1c, 1d) of the cellulose fibers, medium shield (4b)adjacent to the upper cladding layer (4A) of its top one hundred is one (4b.1), containing wood-shaving plate (3), and the lower cladding layer (4)adjacent to the bottom side (4b.2) medium shield (4b)containing the second layers (2A, 2b, 2c, 2d) of the cellulose fibers, and the upper cladding layer (4A) and/or the lower cladding layer (4C) is formed so that it after nomination from the press hot pressing (5) has a thickness of at least 2 mm,
dvizhenie kit (4) layers in press (5) hot pressing,
pressing the set (4) layers with increasing tonnage and temperature with the formation of the multilayer plate (6) and
the nomination of a multilayer plate (6) of the press (5) hot pressing.

2. A method of manufacturing a multilayer slabs of layered material in which carry out the following steps:
preparing multiple first layers (1a, 1b, 1c, 1d) of the cellulose fibers with impregnation,
prepare a second set of layers (2A, 2b, 2c, 2d) of the cellulose fibers with impregnation,
preparation chipboard (3),
education kit (4) layers with the upper cladding layer (4A), containing the first layers (1a, 1b, 1c, 1d) of the cellulose fibers, medium shield (4b)adjacent to the upper cladding layer (4A) of its upper side (4b.1)containing wood-shaving plate (3), and the lower cladding layer (4)adjacent to the bottom side (4b.2) medium shield (4b), containing the named second layers (2A, 2b, 2c, 2d) of the cellulose fibers, and the thickness of the chipboard (3) is chosen so that it is after the nomination of the press (5) hot pressing has a thickness that is at most 5 times the thickness of the top cladding layer (4A) or the lower cladding layer (4C),
dvizhenie kit (4) layers in press (5) hot pressing,
pressing the set (4) layers with increasing tonnage and temperature with the formation of the multilayer plate (6) and
the nomination of a multilayer plate (6) of the press (5) hot pressing.

3. A method of manufacturing a multilayer slabs of layered material in which carry out the following steps:
preparing multiple first layers (1a, 1b, 1c, 1d) of the cellulose fibers with impregnation,
prepare a second set of layers (2A, 2b, 2c, 2d) of the cellulose fibers with impregnation (2A, 2b, 2c, 2d),
preparation chipboard (3),
education kit (4) layers with the upper cladding layer (4A), containing the first layers (1a, 1b, 1c, 1d) of the cellulose fibers, medium shield (4b)adjacent to the upper cladding layer (4A) of its upper side (4b.1)containing wood-shaving plate (3), and the lower cladding layer (4)adjacent to the bottom side (4b 2) medium shield (4b)containing the second layers (2A, 2b, 2c, 2d) of cellulose fibers, the upper cladding layer (4 is) and/or the lower cladding layer (4C) form, the number of layers of cellulose fibers, respectively, at least 12 in the respective cladding layer,
dvizhenie kit (4) layers in press (5) hot pressing,
pressing the set (4) layers with increasing tonnage and
temperature with the formation of multilayered plates and
the nomination of a multilayer plate (6) of the press (5) hot pressing.

4. The method according to one of claims 1 to 3, characterized in that at the stage of formation of a set (4) layers of the upper cladding layer (4A) and/or the lower cladding layer (4C) on their facing away from the middle of the shield (4b) side provided with a layer of cellulose fibers (1A), forming a decorative paper and/or protective layer (4d) from wear, which, in particular, has solid particles and preferably is a layer of cellulose fibers, forming a covering layer of paper.

5. The method according to one of claims 1 to 3, characterized in that the upper cladding layer (4A) and/or the lower cladding layer (4C) is formed so that it is after the nomination of the press (5) hot pressing has a thickness of at least 3 mm, preferably at least 4 mm, and/or that the number of layers of cellulose fibers, respectively, at least 18, preferably at least 24 in the corresponding cladding layer.

6. The method according to one of claims 1 to 3, characterized in that is that the thickness of the chipboard (3) are chosen so that after the nomination of the press (5) hot pressing she has a thickness that is at most 4 times, preferably the largest 3 times greater than the thickness of the upper cladding layer (4A) or the lower cladding layer (4C).

7. The method according to one of claims 1 to 3, characterized in that the step of pressing the maximum temperature press (5) hot pressing is at least 130C, preferably at least 140C., particularly preferably at least 150C and/or the maximum temperature of the multilayer plate (6) is at least 120C, preferably at least 130C., particularly preferably at least 140C and/or the maximum pressing force is at least 15 MPa, preferably at least 19 MPa, particularly preferably at least 23 MPa.

8. The method according to one of claims 1 to 3, characterized in that one or more layers of cellulose fibers (1a, 1b, 1c, 1d, 2a, 2b, 2c, 2d) is provided with impregnation containing conductive electric current supplements, in particular salts of organic acids, mostly metal salts.

9. The method according to one of claims 1 to 3, characterized in that before the step of pressing include permeable to water vapor layer, in particular a non-woven fabric or film adjacent to one or both sides of the set (4) layers, which is donkey stage of compression is removed from the multilayer plate (6).

10. The method according to one of claims 1 to 3, characterized in that the press (5) hot pressing is continuously working press, in particular dvuhnitochnyj press, which, in particular, has a length of pressing at least 10 m, in particular at least 20 meters, mostly, at least 25 m, and/or that nominated from the press (5) hot pressing of the multilayer plate (6) presents a continuous strip of plate, from which with the help of cross-cutting made a separate plate.

11. Multilayer slab of chipboard (3) as a medium shield and plates of the layered material as the cladding layer and each cladding layer (4A, 4C) includes layers of cellulose fibres, supplied by impregnation, and the different layers are connected to each other without mechanical fasteners and/or adhesives, characterized in that the upper or lower cladding layer (4A, 4C) has a thickness of at least 2 mm, and/or the thickness of the middle plate (4b) largest 5 times the thickness of the top or the lower cladding layer (4A, 4C) and/or the upper or lower cladding layer (4A, 4C) is formed so that it consists of at least 12 layers of cellulose fibers in the respective cladding layer.

12. Multilayer slab of chipboard (3) as a medium shield and two square the t of the layered material as cladding layers, each cladding layer (4A, 4C) includes a number of layers of cellulose fibers impregnated with, and cladding layers (4A, 4C) with wood-shaving plate (3) as a medium shield (4b) are directly laminated to each other, characterized in that the upper or lower cladding layer (4A, 4C) has a thickness of at least 2 mm, and/or the thickness of the middle plate (4b) largest 5 times greater than the thickness of the upper or lower cladding layer (4A, 4C), and/or the upper or lower cladding layer (4A, 4C) is formed so that it consists of at least 12 layers of cellulose fibers in the respective cladding layer.

13. Multilayer plate according to 11 or 12, characterized than that of cladding layers (4A, 4C) have a thickness of at least 3 mm, preferably 4 mm or consist of at least 18, preferably at least 24 layers of cellulose fibers in the respective cladding layer.

14. Multilayer plate according to claim 11 or 12, characterized in that the thickness of the middle plate (4b) at most 4 times, particularly preferably the largest 3 times greater than the thickness of the upper cladding layer (4A) or the lower cladding layer (4C).

15. Multilayer plate according to 11 or 12, characterized in that the upper cladding layer (4A) and/or the lower cladding layer (4C) on their facing away from the middle shita (4b) side provided with what ecorom and/or protection layer (4d) from wear, which has solid particles and preferably is a layer of cellulose fibers formed from the covering layer of paper.

16. Multilayer plate according to claim 11 or 12, characterized in that the multilayer plate (6) provided with a coating, and the coating formed varnish, powder coating or decorative material, in particular wood veneer or thin stone plates, a decorative film or metal foil or laminated material and/or received by pressing impregnated with, in particular melamine impregnated resin decorative paper.

17. Multilayer plate according to claim 11 or 12, otlichayushiesya the fact that the thickness of the upper cladding layer (4A) is greater than the thickness of the lower cladding layer (4C).

18. Multilayer plate according to claim 11 or 12, characterized in that the multilayer plate (6) has a bending strength in the transverse direction of at least 30 N/mm2preferably at least 50 N/mm2especially preferably, at least 80 N/mm2and/or modulus of elasticity in bending in the transverse direction is at least 3000 N/mm2preferably at least 5000 N/mm2especially preferably, at least 7500 N/mm2.



 

Same patents:

FIELD: process engineering.

SUBSTANCE: invention relates to production of decorative articles using amber and amber production wastes as filler and may be used for making decorative construction boards. Proposed method comprises preparation of filler, binder and mould, filling said binder in mould, curing it, extracting the article and drying to condition. Note here that article is cured at pressure to complete hardening. Note also that filler is the first to be filled in said mould, then binder is poured therein. Note that in pouring the binder absolute pressure is kept in said mould not exceeding 30 kPa. Note that pouring is carried out from below while, after pouring, absoluter pressure of up to 100-300 kPa is created to complete hardening. Note that pressure feed moment is selected to make binder viscosity be increased by not over 30% at said moment. After extraction, the articled is sliced into thin plates.

EFFECT: reduced labor input.

4 cl, 4 ex, 4 tbl

Decorative element // 2474479

FIELD: process engineering.

SUBSTANCE: invention relates to surface decoration, particularly, to set for surface decoration, to painted coat and method of surface decoration. Proposed set comprises PVC-based surface coating to be painted covered by protective varnish based of polyurethane polymer cross-linked by UV radiation, and encased acrylo-urethane paint.

EFFECT: simple process, better spraying capacity and strength, wide range of colours and ornamental patters.

15 cl, 1 dwg, 3 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to decorative laminated board and to method of its production. Method comprises the following stages. Preparing the board of fibrous or chip material, coating the board on, at least, one side with liquid glue hardened by pressure and/or heat. Building up of decorative layer not impregnated with resin on glue layer. Applying thermoplastic or liquid cover material o decorative layer. Pressing and heating laminar structure thus made to form surface structure of cover layer.

EFFECT: simple and efficiency process.

6 cl

FIELD: process engineering.

SUBSTANCE: invention relates to method and device for refining particle board. Method of refining particle board 2 with decorative finish on one of its sides comprises the following steps. (a) Cleaning particle board top and bottom surfaces. (b) Applying first top layer of pitch containing corundum particles on top surface and first bottom layer of pitch on bottom surface. (c) Drying top and bottom first layers of pitch to residual moisture of 3% to 6%. (d) Applying second top layer of pitch containing cellulose on top surface and second bottom layer of pitch on bottom surface. (e) Drying top and bottom second layers of pitch to residual moisture of 3% to 6%. (f) Applying third top layer of pitch containing glass particles on top surface and third bottom layer of pitch on bottom surface. (g) Drying third said layers to residual moisture content of 3%-6%, and (h) compacting layered structure at pressure and temperature.

EFFECT: perfected procedure.

14 cl, 3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to production of floor boards. Proposed method comprises the following stages: making large-size rectangular board (1, 2, 3, 4) with tope side having, at least, set of long panel decors (D1.1, D1.2, D1.3, D1.4; D2.1, D2.2, D2.3, D2.4, D2.5, D2.6; D3.1, D3.2, D3.3, D3.4, D3.5, D3.6; D4.1, D4.2, D4.3, D4.4, D4.5, D4.6). Note here that every said decor has its direction and extends parallel with one board edge while kevery set has, in the first extreme area perpendicular to decor direction and along one board edge, one straight segment of panel decor (http://Al.ll11, A1.31; A2.32, A2.42; A3.12, A3.22; A4.12, A4.32, A4.52) to be combined with second segment of panel decor (A1.22, A1.42; A2.51, A2.61; A3.32, A3.42, A3.52, A3.62, A3.51, A3.61; A4.22, A4.62) in the same first extreme area and/of in opposite extreme area of this set of panel decors located opposite the first segment of panel decor perpendicular to direction of shifted panel decor (D1.2, D1.4; D2.5, D2.6; D3.3, D3.4, D3.5, D3.6; D4.2, D4.4, D4.6); dividing large-size board (1, 2, 3, 4) into separate panels with one of said panel decors (1.1, 1.2, 1.3, 1.4; 2.3, 2.4, 2.5, 2.6; 3.1, 3.2, 3.3, 3.4; 4.1, 4.2, 4.3, 4.4, 4.5, 4.6); shaping lengthwise and crosswise edges of appropriate panels and making inclined surfaces by scarfing lengthwise edges on decorated side of finished panel and second transverse edge not intended for making continuous decor.

EFFECT: higher quality.

20 cl, 6 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to material workpiece and workpiece processing press plate. Material workpiece comprises, at least, one substrate central layer and decorative layer made on, at least, one side of substrate layer. Decorative layer is arranged on both sides of workpiece to allow precise embossing. Note here that structures on workpiece both sides are accurately leveled.

EFFECT: higher quality.

11 cl, 3 dwg

FIELD: construction.

SUBSTANCE: method to manufacture a floor panel (1), including a bearing board (2) and a decorative layer (3) applied onto the upper side of the bearing board (2), consists in the fact that the decorative layer (3) is pressed in a press with heat supply to the bearing board (2), besides, when pressing with the help of a stamping tool in th surface (8) of the decorative layer (3) a surface structure (10) is arranged, which serves to imitate a wood pattern or a different material. When pressing with the help of a stamping tool, microgrooves (9) are arranged in the surface (8) of the decorative layer (3), where a surface structure is imposed, also comprising grooves, which in their dimensions are much larger than microgrooves.

EFFECT: invention provides for antiskid properties of a panel.

8 cl, 2 dwg

FIELD: chemistry.

SUBSTANCE: method of producing a protective and decorative coating (verisons). The invention relates to construction and specifically to methods of protective and decorative finishing of surfaces of concrete and brick structures. The method of producing a protective and decorative coating according to the first version involves preparation of the surface and depositing a coating on said surface. The coating is formed from elements. The elements used are coloured glass deposited on the inner side and a hardened composition, with the following ratio of components, pts.wt: polyvinyl acetate dispersion with content of dry substance of 49-51% 5-10; alabaster 7-8, mixture of dioxane alcohols and their high-boiling ethers with open-cup flash-point of 130-140C 0.5-1.0, di(alkylpolyethylene glycol)ether of phosphoric acid 0.1-0.2, water 4-8. An adhesive composition is deposited on the hardened surface of said composition of each element, with the following ratio of components in pts.wt: cement 3.2-3.35, quartz sand 3.6-3.8, dolomite powder 1.2-1.3, water 1.8-2.1. A second version of the method of producing a protective and decorative coating on the surface of building structures is described.

EFFECT: high adhesion strength, water resistance and resistance to sodium hypochlorite solution.

2 cl, 2 tbl, 16 ex

FIELD: process engineering.

SUBSTANCE: invention relates to production of panels. Proposed method comprises preparing large-size, rough-compacted wood board to be coated and having, at least, on one its side a shagreen formed in preparation, grinding off section of said shagreen from board top side, applying sizing made from liquid melamine-based resin on board top surface. Note here that said resin partially diffuses into board top surface layer. Then, primer is applied on sixing and dried. Then, at least, one lacquer saturated with water-based dye is applied to make a pattern to be dried. Then, sealing layer from melamine-based resin enriched in wear proof particles and cellulose fibers is applied and dried. Melamine-based liquid resin sizing is applied on board bottom surface. Note here that said resin diffuses, at least partially, in board bottom surface layer. Then layered structure is compacted by pressure at temperature while board is divided into panels or required width and length. Now, joint and locking means are applied on opposite said edges for direct bonding in floor structure.

EFFECT: perfected procedure.

13 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to production of construction materials, particularly, to decoration of constriction panel from inorganic material. Proposed method comprises applying inorganic powder on moulded uncured panel or its section and autoclave treatment. Used inorganic powder represents minced calaite and/or malachite and/or haematite and/or chromite and/or siderite and/or serpentine and/or jasper. After autoclave treatment panel or its sections with powder applied thereon are fused.

EFFECT: increased variety, longer life.

9 ex

FIELD: decorative art.

SUBSTANCE: for simplification of the method the relief is produced by sticking of deceptive material over the contour of the applied image, and the required amount of plastic compound is applied by small sections uniformly on the image surface sections that a free of deceptive material.

EFFECT: simplified procedure.

1 cl

FIELD: construction industry; methods of production of decorative tiles with a grainy coating.

SUBSTANCE: the invention is pertaining to the field of construction industry, in particular, to the method of production of decorative tiles with a grainy coating to increase their water-resistance. The method provides, that the base before application of an adhesive underlayer is subjected to a water-repelling process and in the capacity of an adhesive underlayer use a 8-I2 % water solution of sodium salt of carboxymethylcellulose.

EFFECT: the invention ensures production of decorative tiles with a grainy coating.

4 cl

FIELD: decorative-lining sheet material for producing of material simulating natural or artificial stone or various kinds of wood.

SUBSTANCE: method involves providing thermal vacuum forming of thermoplastic sheets having thickness of 0.5-8 mm and comprising on its face side decorative-protective polymeric film.

EFFECT: wider range of decorative and lining materials and increased efficiency in simulating structure of natural or artificial materials.

2 cl, 1 dwg

FIELD: ceramic decorations.

SUBSTANCE: method of making ceramic decorative art wall panel comes to the following: tiles are placed on backing secured vertically with tilting of 10-15° successively, starting from lower horizontal row, tiles of which are placed on corresponding limiting step of backing.

EFFECT: improved quality of wall panels.

5 cl, 1 tbl, 4 dwg

FIELD: construction industry; methods of manufacture of the architectural-decorative products.

SUBSTANCE: the invention is pertaining to the method of manufacture of the architectural-decorative products. To increase the quality the products the method provides for laying of the color mixtures in the mold for casting of the product is conducted with usage of a vibration process on the vibration exciter.

EFFECT: the invention allows to improve quality of manufacture of the architectural-decorative products.

6 cl, 3 dwg

FIELD: papermaking.

SUBSTANCE: pre-impregnate is manufactured by impregnation of crude paper with thermosetting formaldehyde-free resin until content thereof 10 to 70%. Residual moisture content in pre-impregnate is 2-3%. Resin contains: at least one radical-polymerization polymer with less than 5% of α,β-ethylenically unsaturated mono- or dicarboxylic acid; at least one radical-polymerization polymer containing more than 5% of α,β-ethylenically unsaturated mono- or dicarboxylic acid; and at least one alkanolamine with at least two hydroxyl groups; or resin contains at least one radical-polymerization polymer with 5-100%, particularly 5-50%, or more particularly 10-40% of α,β-ethylenically unsaturated mono- or dicarboxylic acid and at least one above alkanolamine.

EFFECT: improved quality of surface, printing properties, delamination resistance, and varnishing capacity.

16 cl, 3 dwg, 2 tbl, 2 ex

FIELD: construction industry; domestic appliances; electrical engineering; motor-car industry; methods of production and application of the laminated composite materials with the different layers of a resin.

SUBSTANCE: the invention is pertaining to the method of production and application of the laminated composite material with the different layers of a resin and may used in construction industry, domestic appliances, electrical engineering, motor-car industry. The laminated composite material contains the carrier made out of the thermoplastic polymeric compound, the located on it intermediate layer also made out of the thermoplastic polymeric compound and the applied on the intermediate layer of the thermoreactive layer. Between the carrier and the intermediate layer there is a layer of the resin (a) with the rate of consolidation of at least 20 %. Between the intermediate layer and the thermoreactive layer there is the layer of the resin (c) with the rate of consolidation of at least 60 %. The materials of the layers are laid as the flat sheets and at the temperature of 150-300° C link to the carrier. The material possess the high degree of stiffness and impact toughness, the high quality of the surface, the fast and easy solidification.

EFFECT: the invention ensures the high degree of stiffness and impact toughness, the high quality of the surface, the fast and easy solidification.

13 cl, 1 ex

FIELD: construction materials industry; production of the moldable decorative laminated material.

SUBSTANCE: the invention is pertaining to the moldable complicated decorative laminated material, which contains the polymer impregnated decorative layer made out of the bilateral expansible decorative paper and the core polymer impregnated layer formed out of the bilateral extendable kraft-paper. The laminated material is used for production of the different products requiring the molding concerning the surface of the complicated form, in particular, to the packet made out of the laminated material. The board made out of the laminated material has the moldable base in addition to the decorative layer. The method of manufacture of the moldable decorative laminated material includes the following operations: treatment of the decorating paper, its impregnation, the treatment and impregnation of the kraft-paper, the layer by layer stacking and joining of the layers of the decorative and kraft-paper under pressure with their preliminary impregnation with the phenol-formaldehyde polymeric compound. The technical result of the invention is improvement of the surface properties of the decorative laminated material.

EFFECT: the invention ensures improvement of the surface properties of the decorative laminated material.

37 cl, 8 dwg

FIELD: construction.

SUBSTANCE: method comprises applying a lining material on the surface of the panel, gluing the lining material to the surface of the panel, pressing, and conditioning. Before applying the lining material, the panel is dampened and treated with steam. Pressing is performed at a temperature 127-132°C and at a pressure of 170 bar for 4-6 min.

EFFECT: enhanced efficiency.

3 cl

FIELD: manufacture of decorative panels.

SUBSTANCE: prior to delivery of PVC blank to working area, its surface is subjected to loosening for increase of surface activity and for enhancing adhesion by applying solution of primer; use is made in working area of contra-shaft for holding-down the blank to drive guide transporting wheels and for rolling-on the facing material and connecting it with front surface; used as hold-down device is hold-down shaft with its own program-controlled shaft which is made from soft elastic material for copying the configuration of front and side surfaces of blank at the moment of connection with facing material at simultaneous stretching of it for avoidance of folds; its longitudinal axis is located at angle of from 0 to 90° relative to delivery of blank.

EFFECT: improved quality of facing; simplified construction of device; increased productivity of process.

5 cl, 3 dwg

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