CHANGE of NATURAL DECORATIVE PROPERTIES of WOOD. Invoice definition

The Invoice is defined by a superficial structure of a material of a covering, i.e. In size and character of roughnesses. The invoice is closely connected with reflective abilities of surfaces. On reflexion degree distinguish surfaces glossy, substantially reflecting a light stream falling on them, and matte. Matte surfaces are characterised by presence of roughnesses, diffuzno disseminating a light stream. Intermediate conditions between a matte and glossy surface will be semimatte and semiglossy. For covering coverings reception of smooth impressive surfaces with use molotkovyh, lessirujushchih and reflex enamels, and also relief coverings with application of enamels of type ' moire ' and ' shagreen leather ' is characteristic.

In accordance with GOST 9825-73 ' Materials paint and varnish. Classification and a designation ' and GOST 9.032-74. ESZKS. ' Coverings paint and varnish. Classification and designations ' paint and varnish materials are subdivided under the name caused by a chemical structure of a material, on polivinilatsetatnye (VA), poliuretanovye (Ur), polyester sated (PL), polyester nonsaturated (PE) etc. On service conditions they are subdivided into eight groups: weatherproof-1; ogranichenno weatherproof - 2; waterproof - 4; special - 5; oil - and benzostojkie - 6; chemically proof - 7; heat-resistant - 8; electroproof - 9. On appearance paint and varnish materials are subdivided into seven classes (I-VII).

On OST 13-27-74 ' Coverings protectively-decorative on furniture from wood and wood materials. Classification and designations ' depending on a sort of the basic film-forming material are established following kinds of coverings: polyester (PF), poliuretanovye (PU), mochevinoalkidnye acid otverzhdenija (MA), nitrocellulose (NTS), mochevinoformaldegidnye (MF), film on the basis of thermojet polymers (PTR), film on the basis of thermoplastic pitches (PTP), etc.; depending on reflective properties - transparent () and opaque (pigmentirovannye) (), shining () and matte (). On appearance allocate three categories of quality: I, II III.