A method of manufacturing a two-layer plates with a protective and decorative coating

 

(57) Abstract:

Use: wood processing, in particular in processes for the manufacture of wood-based materials with a protective and decorative coating. The inventive method provides for the formation of the Mat, which is pressed in the molds for 1 min at specific pressure of 2.5. . . 5.0 MPa. Then, on the surface of the partially formed of the base plate stack textured layer of granular quartz-containing material with thickness of 0.5-3 mm, for example granite. Produce a hot pressing plate at 160-180 With in the molds for 1.5 to 3.0 min 10 mm thick pressed wood carpet. Textured layer obtained two-layer plates upravlyaut flow of low-temperature plasma with plasma power cord 65. . . of 76.8 kW with a speed of movement of the products of 0.08. . . 0.17 m/s After plasma processing textured layer is formed vitreous decorative fire retardant coating. table 1.

The invention relates to woodworking industry, namely to methods for protective and decorative coatings on wood and polymer-containing products.

The purpose of the invention is improving the fire resistance of the coating.

When short-VA, which instantly hardens, resulting is formed on the surface of the vitreous coating. The obtained glassy coating is more fire resistant than the core, represented by wood and polymer-containing materials. Furthermore, the vitreous coating has a protective and decorative properties and has a high strength of adhesion with the base.

The invention is illustrated by the following examples.

P R I m e R 1. The manufacture of wood-based panels with a protective and decorative coating is produced as follows. First from wood pulp form the carpet and partially podpisovat it.

The formation of the Mat is carried out woodpulp (particle size up to 5.0 mm), the thickness of the bulk of the Mat 30 . . . 40 mm and humidity is not more than 5 % . The ratio of wood pulp of hardwood and softwood can be any. Knitting is missing.

The prepressing wood carpet carried out in a cold way in the molds as the specific pressure of 2.5 . . . 5.0 MPa for 1 min

Next, on the surface of the partially formed of the base plate stack textured layer of granite and produce hot pressing plate at 160 . . . 180aboutWith the molds in tece upravlyaut flow of low temperature plasma. In the plasma treatment of the surface textured layer is formed vitreous protective coating. The mineralogical composition of the textured layer, sealing and adhesive strength are shown in table.

P R I m m e R 2. At the bottom of the pre-form is placed a layer of crushed quartz-containing component, for example steklokrom thickness of 0.5 . . . 3 mm, Then on the specified layer by known techniques is formed into a plate on the basis of wood chips and sawdust. The surface textured layer on said plates further upravlyaut low-temperature plasma in the modes specified in example 1, resulting on the surface of these products is formed vitreous coating with flame retardant, protective and decorative properties and high adhesion to the core (2.4GHz, MPa).

P R I m e R 3. Analogous to example 2. Characterized in that as the basis, which is placed on a previously prepared textured layer is formed plate-based polymer-containing components (aminos). Astringent is aminoplast brand CFA-2 GOST 9359-30 in the amount of 30 . . . 50 % by weight. The surface textured layer plate upravlyaut low-temperature plasma under modes OBLASTNOE vitreous protective coating (adhesion strength with the base is 2.6 MPa).

The use of the invention allows to create highly flammable slabs of wood and polymer-containing materials fire-resistant coating. When this coating are both decorative, which expands the scope of these materials.

A method of MANUFACTURING a two-layer PLATES WITH a PROTECTIVE and DECORATIVE COATING, comprising forming the core layer of wood or polymer-containing materials and the creation on its surface textured layer, characterized in that, to improve the fire resistance of the coating, textured layer made of a granular quartz-containing material, followed by its melt flow of low temperature plasma.

 

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