CS216253B1 - Combined multipurpose transverse flat pressed hollow plate on the base of wood - Google Patents

Description

1 CZECHOSLOVAK SOCIALISTIC DESCRIPTION OF THE INVENTION FOR COPYRIGHT CERTIFICATE 216253 (11) (Bl) (51) Int. Cl.3 B 32 B 21/04 III te K A (22) Registered 21 03 78 (21) (PV 1780-78) (40) Published 28 11 80 OFFICE FOR INVENTIONS (45) Published (75)

Author of the invention BEEP PETER ing., STUPAVA, VARGOVÁ MARTA ing., POPLI MI-CHAL, BRATISLAVA, CASTLE 'IRENA, DUBA (54) Combined multi-purpose cross, flat pressed hollow plate for timber

The invention solves the combined multipurpose cross-sectional flat pressed hollow that is made of wood with reduced flammability.

Minerals based so far produced, in particular asbestos, sting and glass fibers, are equally high refractory but low strength, brittle and relatively heavy (esalite, dupronite, isomine) because they are molded in a non-bleaching manner openings. It can only be used as a construction material in combination with steel frames, which are however a deficient material. The current production of doors with reduced flammability from the listed materials in the local farms is crafted and is laborious. Also known are sapphire thatch on the basis of foamed nlasts (polystyrene, polyurethane) and large-scale wood materials (DTD, DVD), which are lightweight but have low strength properties of fire resistance. Fireproofing the pre-fabrication of finished products to the mass is difficult. Currently, wood-based door doors currently manufactured are essentially wood veneer-coated honeycomb or lacquer coated DVDs that do not meet the fire resistance and puncture resistance requirements. Longitudinal hollow, chipboard, extruded thatch type

The Kreibaum are not fireproof, their bending strength and the puncture resistance are low because the wood chips are arranged transversely in the transverse direction. Tepelnoa's sound-insulating properties are also unsatisfactory. Even after sheathing kreibaum-boards with a surface veneer or a DVD, it is not possible to use them as structurally thatch. Surface molded hollow chipboard or corsa thatch is not yet produced.

The disadvantages of the known state of the art are largely eliminated by the combined multi-purpose transverse, flat, hollow wood-based hollow plate according to the invention, the principle of which is that it consists of a double cross hollow central support half, 30-60 mm thick, composed of 40-60 wt. % coarsely ground tree cortex, 20 to 25 wt. % of expanded granular operlite, 15 to 20 wt. % of a refractory lignocellulosic fiber and 5 to 25 wt. % of a non-flammable phenolic or silicate sealant having a glassy grid reinforcement on the left and a top layer of ridge 1 to 5 mm of 40 wt. % fine wood particles and 60 wt. % Of Sorell's refractory coating. 216253

Claims (1)

2 The board and the articles thereof, according to the invention, are solidly solid, have good thermal insulating properties, increased fire resistance, and are therefore practically applicable in building industry. The main raw material for its production, coarse-grained treewood, is currently used for wood waste. The main advantage of the combined docking according to the invention is its easy raw material availability from domestic wood waste, sufficient strength, low weight and better thermo-insulating and sound-insulating properties compared to mineral fiber and plastic sandwich panels. An example of a composite multi-purpose cross hollow hatch is shown in the attached drawing, wherein in Fig. 1 is a front view of the combined thatch and Fig. 2 of the rebound. Pour 50 kg of coarsely ground buttered bark spruce, 20 kg of expanded granulated pearlite, 20 kg of fire-impregnated chopped straw, and 10 kg of non-flammable phenolic glue of Umaform type into the mixing bowl of the rotary planet mixer. a hydraulic press with hollow rotary cylinders and flat discontinuous presses are produced by simultaneous reinforcement with a glass lattice of the Gauge at t = 180 ° C and a pressure of 6 kp / cm 2. one-sided lightened with semicircular holes. The plate thus obtained is provided with a cover layer of 1 to 5 mm of 40 kg fine wood particles (shavings, sawdust, chips) and 60 kg of Sorell cement from both sides. The surface is treated with a Pla-mor or a silicate sealant. Combined multi-purpose board according to the invention is usable for the production of solid, lightweight fire doors with a fire resistance of 30 to 60 min. and also panelovdo drevostaviéb, respectively. wall and machine cladding. OBJECTS OF THE INVENTION A wood-based, multi-purpose, cross-section, flat-shaped hollow plate, with reduced flammability, characterized in that it consists of a doubled transverse hollow central bearing half (1), 30-60 mm thick, formed by a mixture of 40 to 60 wt. % coarsely milled tree cortex, 20-25 wt. % expanded granular perlite, 15-20 wt. % of a fire-impregnated ligno-cellulose fiber and 5 to 25 wt. % of a flame retardant phenolic glue or silicate glue which is provided on both sides with a glass grille (2) and a top cover layer (3) of ridge 1 to 5mm from a mixture of 40 wt. % of fine wood particles and 60 wt. % Sorell cement, treated with a refractory coating. 2 drawings