RU2385389C2 - Manufacturing method of one-layered wooden panel - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: method involves longitudinal sawing of workpiece on lamellae or boards and their bonding along longitudinal side faces. Workpiece is sawn at least into one pair of lamellae or boards and they are turned along the sawing line to different sides in one plane.

EFFECT: invention decreases deformations in a ready-made panel.

10 cl, 4 dwg

Description

The invention relates to methods for the manufacture of wooden coatings intended for facing walls and ceilings, as well as for laying flooring and manufacturing parquet.

Known methods of sawing rectangular wood billets (Production of lumber and billets. G.A. Nosovsky, Lvov. Publishing House at the Lviv State University of the Publishing Association "VICA SCHOOL", 1985, p. 28 Fig. 4.3; Sawmilling technology. R.E. Kalitevsky. M., "Forest industry", 1986, p. 112, Fig. 25, 26, 27) blanks on lamellas or boards. The mentioned methods do not provide for pairwise selection of a wood grain pattern.

A known method of manufacturing panels "Floor covering, wall or ceiling cladding made of wooden sections arranged as sheets have fitting free contours manufactured to tolerance to tenths of millimeters which follow growth and structural pattern of raw material" (German patent No. DE 102007006631). The method involves copying mating loops of various configurations, creating digital CNC programs, making loops and connecting them in a panel. The method is quite complex, time-consuming and requires complex computer-aided equipment

A known method of manufacturing a panel described in the description of "Wooden single-layer cladding panel", patent RU No. 27935. A wooden single-layer cladding panel is formed from one layer of thin-walled boards glued together along the entire length of the sides. The description does not disclose in detail the method of manufacturing the panels, and there is also no information about the selection of a wood grain pattern.

The closest in technical essence to the claimed method is the "Method of cutting round lumber", are given in the description of the patent No. 2175285. The method includes determining the shape and parameters of the core layer, dividing the round timber into sectors in the longitudinal direction, basing the sectors along one of the processing surfaces and dividing them into parts parallel to the timber forming along the tangent to the annual layers, rotating the received parts relative to each other by 180 ° in vertical and horizontal planes, fastening them together.

However, the method does not provide for obtaining single-layer panels, taking into account the reduction of their deformation after gluing.

It is known that in cut lumber, internal stresses always arise, which deform the sawn elements.

If these elements are glued together with a one-way turn, then the direction of all the force vectors deforming the wood will be directed in one direction and the deformation will double and increase with each new glued element.

If the sawn elements are rotated 180 ° in one plane and glued together at the ends, then the vectors of the forces that deform the wood will be directed in different directions and the summing component of such forces will approach zero. In other words, there will be almost no deformation, which is actually confirmed in practice in the finished panel.

The objective of the invention is to provide a method for producing a single-layer wooden panel for walls, ceilings or for flooring with the possibility of reducing its deformation after gluing and giving the panel high decorative qualities.

The problem is solved due to the fact that in the method of manufacturing a single-layer wooden panel for walls, ceilings or floor coverings, including longitudinal sawing of the workpiece into lamellas or boards and gluing them along the longitudinal sides, according to the invention, the workpiece is sawed into at least one a pair of lamellas or boards and unfold them along the cut line in different directions in one plane.

When more than one central cut is made, every two subsequent lamellas or boards located on the outer sides of the following symmetrically arranged cuts are turned to the outside.

The resulting lamellas or boards are deployed in such a way that the cut plane is the front side of the glued pair of lamellas or boards.

The number of boards or panels obtained from the workpiece is even.

The thickness of the resulting lamellas is from 3 to 10 mm, and the thickness of the boards is from 10 to 30 mm.

The manufacture of lamellas or boards is made from coniferous or deciduous species of wood, as well as from thermally modified wood.

Depending on the purpose of the panels, additional processing of the front side of glued lamellas or boards is carried out as necessary.

Depending on the operating conditions of the panels, for example for flooring and improving the heat or sound insulation properties of the panel, a layer of thermo or sound insulation material, for example cork material, is glued to its rear side.

The invention is illustrated by drawings, which depict:

Figure 1. The scheme for sawing a rectangular workpiece into two lamellas or boards.

Figure 2. The scheme of joining and gluing the panel with a combination of a wood grain pattern with a glued layer of thermo-soundproof material.

Figure 3. Scheme for sawing a rectangular workpiece into four lamellas or boards.

Figure 4. The scheme of joining and gluing of the two panels obtained with the combination of the wood grain pattern, without a glued layer of thermo-acoustic insulation material.

A method of manufacturing a single-layer wooden panel for walls, ceilings or floor coverings involves the longitudinal sawing of a preform of preferably rectangular cross-section into at least one pair of lamellas or boards 1 and 2 (Fig. 1). Obtained after cutting lamellas or boards 1 and 2 (Fig. 2) are deployed along the cut line in different directions, placing them in one plane, and then gluing them along the longitudinal sides, while the plane of the cut is the front side of the glued pair of lamellas or boards .

In order to increase productivity, the initial preform, preferably of rectangular cross-section (Fig. 3), is cut into several lamellas or boards. At the same time, every two subsequent lamellas or boards located on the outer sides of the following, symmetrically arranged, cuts, are turned to the outside in the same plane and glued together 1,2 and 4,5 along the longitudinal sides (Fig. 4).

Due to the rotation of the lamellas or boards along the cut line and their subsequent gluing, a panel element is obtained in which the vectors of the forces deforming the wood are directed in different directions and the summing component of such forces will approach zero. Thus, the probability of deformation of the panel is reduced.

In addition, two symmetrical patterns of wood texture, combined among themselves, form a natural composition of natural layers of wood.

The initial thickness of the rectangular billet is selected from the total thickness of the resulting lamellas or boards and the total value of cuts, while the number of boards or lamellas obtained from the billet should be even.

The thickness of the resulting lamellas is from 3 to 10 mm, and the thickness of the resulting boards is from 10 to 30 mm.

The manufacture of lamellas or boards is made from coniferous or deciduous species of wood, as well as from thermally modified wood.

If necessary, perform additional processing of the front side of glued lamellas or boards.

Depending on the operating conditions and to improve the heat and sound insulation properties of the panel, a layer of thermal or sound insulation material, for example cork material 3, is glued on its back side.

In the case of using thermally modified wood, it is possible to reduce the thickness of lamellas to 3 mm, and floorboards to 15-20 mm.

The technical result achieved is to obtain panels with the ability to reduce their deformation after gluing and to give the panels high decorative qualities by combining the texture pattern of lamellas or boards that have collapsed along the cut line, creating an original natural composition.

Claims (10)

1. A method of manufacturing a single-layer wooden panel for walls, ceilings or floor coverings, including longitudinal sawing of the workpiece into lamellas or boards and gluing them along the longitudinal sides, characterized in that the sawing is performed on at least one pair of lamellas or boards and turn them along the cut line in different directions in one plane. 2. The method according to claim 1, characterized in that when carrying out more than one central cut, every two subsequent lamellas or boards located on the outer sides of the following symmetrically arranged cuts are deployed on the outside. 3. The method according to claim 1, characterized in that the resulting lamellae or boards are deployed in such a way that the plane of the cut is the front side of the glued pair of lamellas or boards. 4. The method according to claim 1, characterized in that the number of slats or boards obtained from the workpiece is even. 5. The method according to claim 1, characterized in that the thickness of the resulting lamellas is from 3 to 10 mm 6. The method according to claim 1, characterized in that the thickness of the resulting boards is from 10 to 30 mm 7. The method according to claim 1, characterized in that the manufacture of lamellas or boards is made from coniferous or deciduous wood. 8. The method according to claim 1, characterized in that the manufacture of lamellas or boards is made of thermally modified wood. 9. The method according to claim 1, characterized in that, if necessary, perform additional processing of the front side of glued lamellas or boards. 10. The method according to claim 1, characterized in that in order to improve the heat and sound insulation properties of the panel, a layer of thermal or sound insulation material, for example cork material, is glued to the rear side thereof.

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