Facing panel for electric fire portal and method of its production

FIELD: process engineering.

SUBSTANCE: invention relates to decorative materials, particularly, panels for facing electric fire and other electric appliances. Facing panel is made from medium density fireboard (MDF). One surface of said panel features relief with depth varying from 5 to 30 mm. Said relief is coated by mix of paint and quartz sand. Sand fraction features size not exceeding 2 mm with quartz sand-to-paint ratio varying from 1:8 to 1:12. Paint and sand layer thickness after makes from 1 to 3 mm. Production of said panel comprises dividing MDF sheet into workpieces with sizes corresponding to those of facing panel. Then, processing of, at least, one biller surface by cutting tool for their crowning. Then, performed is application of the mix of paint and quartz sand on surface and drying it.

EFFECT: reduced weight and costs.

5 cl

 

The present invention relates to decorative materials, in particular panels for cladding of electric fireplaces and other appliances.

An important part of the fireplace that defines its aesthetic perception, is a portal. Salaries fireplace portal are mainly of two types: stone (natural and artificial marble, artificial stone veneer, etc.) and wood (mahogany, oak, mahogany, cherry, walnut, and others), or by the imitation of plastics and composites.

Natural marble is heavier and more expensive than artificial. A relatively new material for fireplaces - cast marble. It consists of quartz sand or ground marble, resins and dyes. Impact strength of the artificial stone seven times more than natural marble. Parts of it are produced by the technology of cold pressing in the forms, and they are as durable and wear resistant than marble. Molded marble painted on the depth and does not lose color from exposure time, UV and water.

Artificial facing stone is a material on the basis of concrete obtained by artificial means, however, in appearance almost indistinguishable from natural stone or natural rocks. Essentially, decorative stone is a sandy concrete, filament vibrola the I in an elastic matrix form. This technology allows you to achieve almost complete repetition of the texture of natural stones and to ensure high strength of the material. The composition of the material is rather complicated: use a binder component (usually Portland cement M-400 or M-500); a filler, such as large quartz sand, fine gravel, etc.; special pigments and dyes (oxides of titanium, chromium, iron). Mixing these compounds in the desired proportions, you can achieve almost any color and texture (Kireeva SCI "Building materials", Minsk, 2006; website "encyclopedia of building materials" http://www.smenc.ru/).

The disadvantages of these materials is a lot of weight and price. Besides working with stone is heavy manufacture, requiring increased security measures, dust and noise protection. Replacement stone for extruded plastic does not solve the problem entirely, since imitation is noticeable, and the material itself is not enough for the environment.

Well-known lining materials made from polymeric materials, which in one way or another put a layer containing natural materials (sand, stone chips etc). For example, construction of protective and decorative element (patent UM No. 55395)containing polymer base and decorative coating of a hardened mixture of perlite, sand and acrylic p is limera; construction of protective and decorative front panel (patent UM No. 89148)containing polymer siding as a base, which by means of a polymeric binder pasted mineral crumb and others (patents GR No. 41277, No. 92051; the application for the invention of the Russian Federation No. 2007129678). Disadvantages in the use of such panels for cladding of electric fireplaces (electric heaters) is, on the one hand, the possible degradation and toxicity of polymers on prolonged heating, on the other - the lack of texture and depth of the relief, peculiar stones traditionally used when folding fire of the hearth, fireplace (and which simulates the fireplace modern interior).

Know the use of MDF as the base panels, imitating natural materials (patents on PM RF # 88376), often in imitation of wooden panels. Also fiberboard can be used as one of the Foundation layers, which already form the relief moulding, casting, applique, etc. (for example, patent RF №2136395). In all cases, the fiberboard layer is smooth and uniform.

The task is to create a lightweight, cheap, easy to manufacture and installation simulate natural stone with a high degree of certainty, from environmentally friendly material that has sufficient strength and garoto the bone, having a high specific heat capacity.

The technical result of the present invention is the reduction in weight and reduction in the production of facing panels, while maintaining the appearance, enhancing the safety of use and the expansion of the range.

Imitation of natural stone is made on the basis fibreboard (MDF). Fiberboard is a sheet material which is manufactured by hot pressing or drying the wood fibers with the addition of binders and special additives, depending on the required parameters. Its other name MDF (MDF - Medium Density Fiberboard) wood-fiber Board medium density. Material close to the natural wood, easily handled, moisture-proof, weakly flammable, resistant to biologically active environments, retains heat well. Has the density and uniformity, allowing for the processing of cutting tools, to create a texture that simulates the chips on the surface of the stone.

The claimed technical result of the present invention is achieved in that the sheet of MDF is divided into pieces corresponding to the dimensions of the cladding panels to the portal of the fireplace. At least one surface of the workpiece (front) handle the cutting tool, to give her relief. Relief repeats the shape of the chips on n the surface of the stone. Processing is done usually manually chisels or cutters special shapes (straight, semi-circular, oblique, and so on). The depth of the relief is usually from 5 to 30 mm depending on the thickness of the workpiece. This method of production allows you to create every time a unique texture that gives it more credibility. The surface can also be processed on CNC machines, providing the random motion of the cutter.

The treated surface is covered with dye-sand mixture. As the basis usually use matte water-based latex paint. Paint color is chosen depending on the breed of simulated stone. This is mainly Sandstone. If necessary use multiple inks of different colors, covering their private parts of the surface. Sand picked with a uniform fraction of the size of usually from 0.1 to 2 mm, the Preferred size fractions ranging from 0.1 to 1.5 mm, the Ratio of paint and sand in the mixture is chosen from 8:1 to 12:1. The mixture is applied to the surface through the sprinklers, or by mikania in the composition, or a brush, or otherwise. After drying, the layer thickness is 1-3 mm, the Surface can also be coated with varnish. Usually use two-component polyurethane matte varnish. Sprayed it with spray on top of the mixture, the thickness of the varnish layer is 0.1 to 0.3 mm. This way the floor is to be placed facing panel enables you to simulate different types of stone, selecting it under the interior.

Facing panel for portal heater made in accordance with the inventive method, is MDF-plate, at least one surface of which a relief, covered with a mixture of paint and quartz sand. The depth of the relief has a value from 5 to 30 mm, the thickness of the layer of the mixture of paint and quartz sand is usually 1-3 mm If necessary, the facing panel is covered with a protective layer of lacquer. The inventive panel is a visual and tactile simulation of processed natural stone: passing it the color, texture, uniformity, density.

Every product made in accordance with the present invention, is unique. When making a portal that gives additional accuracy of the simulation. The panel is more than four times lighter than similar articles made of artificial or natural stone; resistant to various fungi and microorganisms, hygienic and safe at home, tolerates exposure to vapor - swell, not warped. Such a facing panel, due to the high mechanical strength of MDF, can be used not only in the manufacture of facades for fireplaces, but also for interior decoration.

AN EXAMPLE IMPLEMENTATION.

Fiberboard sheet thickness of 20 mm is divided into pieces of size 100×80 100×120 mm Then process them manually re the CMA, imitating the structure of cut stone (Sandstone). Dye-sand mixture is prepared based Matt emulsion paint Beckerplast 3 (manufacturer Tikkurila). Quartz sand is pre-washed and separated into fractions. The size of the grains is from 1.2 to 1.5 mm. Paint and sand take in the ratio of 10:1. A homogeneous mixture is applied with a brush on product. After drying, the layer thickness is 1-3 mm Above the sprinklers sprayed two-component polyurethane matte varnish. Finish facing panel size 80×100 mm and weighs 100 g

The portal going from facing panels under the inserted him in the hearth of the fireplace.

1. Facing panel for portal heater, made of MDF, characterized in that at least one surface has a relief depth of 5 to 30 mm, coated with a mixture of paint and quartz sand fractions which have a size of not more than 2 mm, with a ratio of quartz sand and paint in the range from 1:8 to 1:12, the thickness of the layer of paint and sand after drying is from 1 to 3 mm.

2. Cladding panel according to claim 1, wherein the dye is selected on the basis of aqueous emulsions.

3. Cladding panel according to claim 1, characterized in that the top is covered with a protective layer of lacquer.

4. A method of manufacturing cladding panels for the portal of the heater according to claim 1, including the separation of a sheet of MDF for the otoki, corresponding to the size of the cladding panels, processing at least one surface of the workpiece with a cutting tool to give her relief, applying on said surface a mixture of paint and quartz sand, drying.

5. The method according to claim 4, characterized in that the relief repeats the shape of the chips on the surface of the stone.



 

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