CA2463192A1 - Wooden panel and cross rolling beam - Google Patents

Description

PANEL AND BEAM Ä CROSS ROLLING
FIELD OF THE INVENTION
The present invention relates generally to the field of products foresters, more particularly wood panels and beams made by laminating pieces of wood. More particularly, the invention relates to the design of a new type of wood panel or beam having a large load capacity, manufactured at from pieces of wood laminated so as to create a cross of the fibers.
DESCRIPTION OF THE PRIOR ART
On the market, there are several types of laminated wood panels or agglomerates. All these panels have specific utilities and capabilities depending on their types and their mode of manufacturing.
There are panels with a central part consisting of different debris and scrap wood squeezed agglomerated with a glue and covered with counter surface wooden plate.
These panels do not have a high resistance to loads and shocks and do not accept any contact with water. In addition, they are made up largely part of glue.
There are panels made of particles and new wood fibers cut into flakes (flakes), these are mixed with glue, accumulated and piled into mattress that will be squeezed and heated. There are two types of panels, those with particles and fibers disordered: and those with particles and oriented fibers (OSB = oriented strand board). This last type offers good resistance to loads and shocks, but accepts hardly contact with water. They are also made up largely part of glue.
There are plywood panels, which are made of thin layer of wood unrolled from new logs. These layers are arranged one on the other so that orient the fibers of each layer perpendicular to each other, a glue is

2 applied between each layer to allow hot rolling under pressure. These panels have very good resistance to loads and shocks, but are expensive to manufacture.
There are also the laminated beams. They generally consist of Several pieces of wood glued together and / or side by side. They can resist to large loads but are bulky and very heavy.
I! There is therefore still a need in the market for a forest product having a big resistant to loads, pressures and contact with water and would not be too much bulky or too expensive.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a forest product responding to such need.
More particularly, the present invention relates to a forest product of panel type, beam or beam, having a given length and comprising several layers the rooms superposed and glued together, characterized in that, for each of layers, the pieces of wood have an orientation at an angle to the axis longitudinal product; and in that the orientation of the pieces of wood of adjacent layers is different, such an arrangement of the pieces of wood to obtain a product to cross lamination having a great resistance to loads, pressures and contacts with water.
The invention also relates to a process for producing the described forest product above. This process includes the following steps -position a series of pieces of wood of identical thickness side by side on a same plane so as to obtain a first layer whose orientation of the parts is angled in relation to the longitudinal axis of the forest product;
-position on the first layer another series of pieces of wood thick identical side by side on the same plane so as to obtain a second layer whose

3 the orientation of the parts is reversed with respect to the orientation of the parts from the first layer at an angle to the longitudinal axis of the forest product; and -laminate the first and the second layer by applying a putting under pressure all.
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Another object of the invention lies in the way of using this type of forest product in the manufacture of beams and beams that can accept large loads while being more compact and lightweight.
According to a preferred embodiment, the wood panel and / or the beam to crossed lamination, consist of solid wood layers superimposed and glued to each other other.
More specifically, the panel and / or the beam preferably consist of - A series of solid pieces of wood, of identical thickness, width identical and / or different, positioned side by side on the same plane, in order to form a layer or part of a panel and / or beam. The orientation of the pieces, on the meaning of the length, is at an angle to the axis of the "X" or "Y".
That is, they are not arranged horizontally or vertically, But well at an angle, varying according to the desired resistance, with respect to these two plans.
- Another series of pieces of sodden wood, of identical thickness, width same and / or different, positioned side by side on the same plane, in order to forming a layer or part of a panel and / or beam. The orientation of pieces, in the direction of the length, is on an angle to the axis "X"
or "Y". That is, they are not arranged horizontally or the vertically, but at an angle varying according to the desired resistance, report to these two plans. The angle chosen with respect to the need for resistance; will be the even on each of the layers, the difference between this layer and the previous will reside in the orientation of the angle. Which means use an angle on the first layer pointing to the right, will bring use an angle pointing to the left for the next layer or vice versa.

4 - An adhesive, of great resistance, is applied between the layers and the whole is put under pressure to laminate everything.
- The angles, varying according to the desired resistance, identical but opposite on each of the layers gives the whole a great resistance to loads.
- The panel and / or the beam may consist of two or more layers superimposed on the elf itself, depending on the needs and the required load capacity.
Depending on the type of manufacture, several panels and / or beams can be superimposed and rolled, to form a panel and / or a beam of more large size and superior strength.
- Several wood species can be used to obtain panels and / or beams with external finishes allowing their use for the decoration.
- Finally, always according to the resistances wanted, the layers can be openwork to form lattices. This configuration makes it possible to obtain panels and / or beams of greater lightness.
BRIEF DESCRIPTION OF THE DIAGRAMS
Figure 1 shows the method of edging pieces of wood.
Figure 2 shows the method of angled cuts of pieces of wood.
Figure 3 shows the principle of layers or slats with right angle and angle to left.
Figure 4 is an isometric view showing the rolling of the angled layers reversed.

Figure 5 shows an example of a beam or panel manufactured using several layers superimposed.
Fig. 6 is an isometric view showing an example of use of a laminated lamella

5 X in the manufacture of support beam for floor and roof.
DESCRIPTION OF A PREFERRED EMBODIMENT
The cross-laminated wood panel according to a preferred embodiment of the invention is made of layers of solid wood superimposed and glued to each other. The dimensions, on the three axes, may vary depending on function and needs. The product finished can be manufactured in the form of a square or rectangular panel, it can also be present under the shape of a lamella or beam of different height and length almost infinite.
The basic materials are pieces of wood normally used in the field of construction. These pieces can be of different dimensions of width, height and length. According to the preferred embodiment, they are parts out standards or short dimensions recovered in the selection and classification of wooden pedestrian in factories, processing (sawing and planing).
These pieces can be processed individually or passed through a stage finger jointing, according to a known art, which allows them to join end to end continuously.
The pieces are passed, in the direction of the length, in a edger so get several boards of small thickness, see Figure 1, this thickness being predetermined as needed: They are then separated and directed to a planer or another type of rotary knife machine; which will give them a smooth surface finish and an uniform thickness.
They are then cut to predetermined lengths and angles, see figure 2, moved to a mechanism that positions them side by side to form a slat, see figure 3. Another lamella is formed, but this time with an angle reversed compared to the first, see: ~ gure 3.

6 A layer of glue is applied between the two lamellae; see Figure 4. The everything is headed to a press in order to compress the two surfaces against each other so to get a adherence and uniformity.
The superposition and gluing of the slats can be done by square shape or rectangular to obtain already dimensioned double-layer panels or can be done under a continuous method in order to obtain double layers very long lengths.
The use of several layers or the superposition of several slats to double layers makes it possible to obtain panels of greater thickness or beams of different thicknesses at very long lengths, see figure 5.
In addition to the preferred embodiment, other materials may be integrated into layers or inserted between layers to increase or change different characteristics of the finished product such as;
- The addition of materials other than wood to increase the resistance to charge;
- The diversification of angles from one layer to another or the addition of a layer to the horizontal;
- The use of different wood species to enrich the finish outside of final product;
- The addition of insulating materials to add insulating properties to final product;
- The use, for the central core, of the X-rolled slats in the manufacturing support beams for floor and roof, see figure 6.
Although a preferred embodiment of the invention has been described in detail above and illustrated in the accompanying drawings; (invention is not limited to this mode of realization and several changes and modifications can be made by a person from profession without departing from the scope or spirit of the invention.

Claims (2)

Claims. 1. A forest product having a given length and comprising:
-several layers of wooden parts superimposed and glued to each other, characterized in that:
-for each of the layers, the pieces of wood have an orientation at an angle by relative to the longitudinal axis of the product; and in that -the orientation of the pieces of wood of adjacent layers is different, a such arrangement of the pieces of wood to obtain a laminated product cross with a high resistance to loads. 2. A method of making a cross-rolled forest product, including the steps of:
-position a series of pieces of wood of identical thickness side by side on a same plan so as to obtain a first layer whose orientation of the parts is at an angle relative to the longitudinal axis of the forest product;
-position on the first layer another series of pieces of wood thick identical side by side on the same plane so as to obtain a second layer whose the orientation of the parts is reversed with respect to the orientation of the parts of the first layer at an angle to the longitudinal axis of the forest product;
-laminate the first and second layer by applying a binder and putting under pressure everything.