Wood materials - Part 2

Veneers. The traditional material for wrapping-wood veneers - thin cutting fine wood. Veneers can be of three types - sawn, sliced ??and peeled. Sawn veneer (1 to 12 mm) is obtained by sawing a piece of wood into thin plates. Thus, cap or butt cut into plates of thickness 4-6 mm. Typically, such a veneer manufactures the master himself. Sliced ??veneer is produced by cutting (slicing) timber - Wanchese special knives in the machine, the size in this case we get the width of the veneer lumber. The more subtle and crooked trees from which we get veneer, the smaller size pieces. Thus, the width of birchwood veneer of 30-50 mm. Width veneer - from 120 to 60 mm, with gradation of 10 mm, thickness from 0,4 to 1,0 mm with a step 0.2 mm. Depending on the direction in which relative growth rings were made of wood planing, distinguish the following types of veneers: radial (R), poluradialny (OL), tangentalny (T), tangentalno-Allen (CT). Sliced ??veneers are made of hardwood and softwood, and also from the build-up (cap) of all breeds. Softwood is used larch and pine. Of deciduous woods use the following: - melkorasseyanno Cardiovascular - birch, beech, hornbeam, pear, maple, linden, alder, aspen, poplar, willow, redwood (dibetu, Makor, Moab, sapele) - Largly Cardiovascular - red tree (Aileu, Bose, limb, African Mahogany, Okoume, sipo, Thiam, framire) - koltsesosudistye - velvet tree, elm, oak, elm, elm, chestnut, ash. Labeling contains the name of the wood species, designation of the veneer (in the direction of planing), the thickness of the sheet. For example, a nut PR 1-0,6 GOST 2977-82. We distinguish the front veneer (right) and back (left) side. Front - a party outer veneer. The surface layer of veneer over the front of the compact. On the reverse side of the veneer surface layer is more loose, there may be cracks. To face coverings appropriate to use the front of the veneer, which can be easily determined in an oblique light. Sliced ??veneer stacked in order of cutting sheets in the pile-Knol, so you could pick up picture plane (eg, symmetrical). Rotary cut veneer is cut round in a spiral with a rotating cylindrical logs, Churakov, its width is much greater than sliced. Rotary cut veneer is produced from cheap and very common species: birch, alder, beech, oak, ash, elm, linden, larch and cedar. In this way we obtain veneer having a texture close to tangentalnoy, but with large gaps between early and late wood. If exposed to shelling svilievataya wood veneer that is obtained with a texture that has high decorative quality. Usually peeled veneer has little value in decorative terms. When it is used for exterior veneers used various ways to enhance the decorative effect: surface dyeing, hot printing (pirotipiyu), opaque finish, etc. Plywood. Depending on the application of veneer plywood manufacture of various grades. Basically, use regular plywood, which is sanded and sanded with a thickness of 1.5 mm to 18 mm; aircraft birch plywood BS-1, is sufficiently flexible along the grain, BV-1 with a mutually perpendicular arrangement of the layers, decorative plywood FOF or FLC, pasted with one or both sides with veneer from valuable wood (walnut, oak, etc.) and decorative plywood DF-1, DF-2 DF-3 and DF-4, lined with a transparent film or paper with wood pattern, color or varnished plywood. Fibreboard (MDF) and chipboard (DSP) manufactured by hot pressing of wood particles mixed with a binder. Laminated chipboard. Today, we increasingly see the DSP with many confusing the definition of "laminate" (or "melamine"). Laminate and Melamine - is the same. So-called special artificial turf made of synthetic resin. This plate has high resistance to moisture and high temperatures "on it does not form scratch, and it always looks fresh. Such a miracle features modern furniture gives a special protective coating of melamine resin. Tehnoloogiya relatively simple: decorative paper impregnated with special resins and bonded under high temperature to the surface of the chipboard. Then plotted on top for at least another two layers of melamine resins. As a result, we obtain a surface that is not afraid to practically nothing. Edge tape can just pick the color of the main surface (its width - 23 mm). As the back plate, metal edge, the tape may have a porous ("orange peel", "the pores of wood) or a smooth texture. There is also a cheaper option edging tape, which is characterized by a limited number of colors and smooth structure (width 21 mm). Laminated chipboard should be distinguished from masked. Technology for manufacturing laminated chipboard is somewhat simpler. In particular, the thin protective layer, a decorative paper simply glued to the surface of the plate at low temperatures and is not covered above resins. Of course, this slab is cheaper, however, and its properties are inferior to the properties of laminated: it is not as resistant to water, very decorative paper sometimes peels off, and the appearance of such furniture quickly loses its freshness. Postforming - a laminated chipboard in standard sizes, which comes to finish work and front surfaces of furniture. Classic postforming a chipboard covered with laminate at elevated temperature and pressure, which ensures high resistance to mechanical, thermal and chemical effects. Note that the production of decorative paper used postforming increased density and thickness of the laminate up to 1 mm. The thickness of the post forming for a working surface - 28 and 38 mm. Most often, post forming used in production and trade of kitchen furniture, but because he obtained, for example, and an excellent window sills, which are due to the abundance of decorative colors fit well into the interior. Plate postforming have the following standard sizes: 2500x600 and 3050x600 mm. However, under the order is possible and posstavka postforming 1200 mm wide. Facade softforming - it's the same laminate chipboard that comes in standard sizes, but manufactured at a lower pressure. Softforming - lightweight stove, which applies for registration of facial surfaces of furniture (eg, cabinet doors). Its thickness - 18 mm. Decorative features soft forming large: about 100 variants of the color-texture processing different profile configuration. Wide application softforming finds in interior renovation. Saving money, the customer can only change the door and the front surface of your kitchen cupboards and as a result of achieving the effect of a kitchen renovation. Plate postforming and softforming have a glossy (smooth) and matt (porous) surface. Several variants of the matte surface. For example, a firm "Pani-West" offers a variety of "orange peel" and "pore ash. MDF - (MDF - Engl., HDF - it.). Hardboard average density (Medium Density Fibreboard - English).. Not to be confused with the JVP. Environmentally friendly material. On the mechanical characteristics superior to natural wood. Density of MDF is much higher than that of ADI. And consequently, more and weight. Therefore, in the manufacture of furniture MDF is used only for facade surfaces. It should be noted that the strength of MDF is very high, which increases the durability of the furniture. MDF-flammable, biological stability, weatherproof, and cheaper wood.