RU2335391C2 - Method of front decorative panel production - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: wastes of cutting and logging works in the form of trunks, branches of any thickness together with bark are cut into front plates. Plates are glued over with moisture permeable material on both sides and are installed in container in a pile with insertion of process laths between them, at that space between plates and around is filled with dry sawdust. Drying of plates in container is carried out in closed room with the temperature of 18-30° at natural ventilation until plates humidity reaches 6-8%. Then dried plates are calibrated, glued onto base, and further their surface and space between them are coated with composite material. Composite material is transparent polyester resin with filler in the form of powdered fraction of amber.

EFFECT: simplification of production technology; reduction of labour intensity and product cost.

2 cl, 4 dwg

Description

The invention relates to the woodworking industry and can be used for the manufacture of decorative panels used in the interior of rooms: floors, walls, ceilings, countertops, etc.

A known method of manufacturing decorative plates from wood material, including cutting the churaks of the required length from the wood material, freeing the chura from the bark, drying the chura in a drying chamber at a temperature of up to 60 ° C with periodic steaming, sawing out chunks of bars, the cross section of which looks like an equilateral correct polygon, grouping and gluing the bars into a bag along long longitudinal edges, laying the bag in a conductor and tightly tightening it, cross cutting the glued bag that at a given plate thickness, polishing the end surface of plates coated with lacquer or wax. [RF patent No. 2062230, IPC В27М 3/04, 1994]

However, this method is very laborious, low productivity, with a low yield of finished products. During operation, the surface of the plates wears out quickly, because a thin film of varnish quickly breaks down, point breaks form in the film, through which moisture penetrates the wood.

A known method of manufacturing the end decorative panel, including the workpiece and cylindering of churak from wood, impregnation of cylindrical churak with water to reach a moisture content of 80-120%, preliminary compression of churak along the entire length and pressing on a press equipped with a multi-cavity mold, drying the resulting workpieces in molds, in a drying chamber at a temperature of 70-120 ° C until a moisture content of 6-8% is reached, sorting in order to reject defective workpieces, gluing workpieces along side surfaces into bags and compressing these bags under pressure, cutting the package into plates, gluing the plates onto a solid base, sanding the panels, coating with several layers of moisture-resistant varnish, followed by drying of each layer. [RF patent No. 2166429, IPC В27М 3/04, 1999]

A known method of manufacturing a face checker for parquet boards or wall panels, adopted as a prototype, which includes drying of fine materials in a steam chamber to a moisture content of 8%, sawing across the axis by cutting nozzle cutters into billets (dies), cutting from billets using a knife mold in to a hydraulic press of checkers of various configurations; impregnation of oligopiperylene synthetic rubber in a solution and drying in drying ovens at atmospheric pressure and a temperature of 110 ° C until complete removal of the volatile part nutritional composition. [RF patent No. 2096171, IPC В27М 3/04, 1994]

However, the use of a synthetic rubber solution in the known method distorts the natural texture of wood, i.e. degrades the appearance of the finished product. Also, the known methods are very time-consuming due to the large number of operations, require the use of complex energy-intensive equipment (drying cabinets, hydraulic presses, etc.). In the manufacture of a sufficiently high level of waste when cutting pieces of a given shape and their subsequent sorting and rejection. The appearance of the finished products is not very diverse and depends only on the shape of the polyhedra.

When creating the invention, the problem of creating highly artistic products was solved while simplifying the manufacturing technology and, accordingly, reducing the complexity, as well as cheaper products.

The problem is solved due to the fact that in the known method, including drying, sawing wood into end rams and coating them with an impregnating composition, according to the invention, after sawing wood into rams of a given thickness, they are dried in an enclosed room with a temperature of 18-30 ° C with natural ventilation in a container with sawdust, and the dies are stacked in piles with a gap, the dies are impregnated after they are glued to the base in accordance with the sketch, and the composition is used as an impregnating composition Comprising a transparent polyester resin and a filler in the form of amber dust fraction, the composite also fill the space between the dies.

When drying the dies in a container in sawdust during natural ventilation, uniform slow moisture removal from wood occurs, which prevents the appearance of new cracks during operation.

Impregnation with a composite, which includes a transparent polyester resin with a filler from the amber dust fraction, on the one hand, can significantly improve the quality of the product, its durability, and on the other hand gives it a unique flavor, because Amber-filled composite enriches the color scheme of wood, while allowing you to see its texture.

To exclude warping of the dies during the drying process, they are pre-glued with moisture-permeable material on both sides.

The invention is illustrated by drawings, where in Fig.1 shows a decorative panel; figure 2 is a section of a container; figure 3, 4 - photo countertops.

The method is as follows.

Timber, which is the waste of logging and logging in the form of trunks, branches of any thickness, together with the bark, is cut into end plates 1 of the required thickness depending on the purpose and type of product. The dies 1 on both sides are covered with a moisture-permeable adhesive and a layer of paper 2 is glued. A stack of dies 1 is stacked in a mesh container 3 with the technological rails 4 laying between them, and the space between the dies 1 and around them is filled with dry sawdust 5. After filling the container 3, drying is carried out indoors with a temperature of 18-30 ° C with natural ventilation until the humidity of the dies is 6-8%. During the drying process, uniform slow moisture removal from the dies 1 occurs due to its adsorption by sawdust 5. Then, the dried dies 1 are calibrated on both sides, glued to the base 6, for example, plywood, in accordance with the product sketch, and then cover the dies surface and the space between them with composite 7. In this case, the composite fills all voids, cracks, hollows in the dies and impregnates their upper layer. Composite 7 is a transparent polyester resin having a refractive index like glass, with a filler in the form of a pulverulent fraction of amber. After the hardening of composite 7, the product is ground and varnished.

Claims (2)

1. A method of manufacturing an end decorative panel, including drying, sawing wood into end dies and coating them with an impregnating composition, characterized in that after sawing wood into dies of a given thickness, they are dried in an enclosed room at a temperature of 18-30 ° C with natural ventilation in a container with sawdust, and the dies are stacked in piles with a gap, the dies are impregnated after they are glued to the base in accordance with the sketch, and a composite including a transparent polyester resin and a filler in the form of a pulverulent fraction of amber, the composite also filling the free space between the dies. 2. A method of manufacturing an end decorative panel according to claim 1, characterized in that before laying in a container, the dies are glued with a moisture-permeable material.

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