Patent Application
20150037528
This Application claims priority to and the benefit of European Patent Application No. 1317889.4 filed on Aug. 1,2013, the content of which is incorporated by reference in its entirety.
The present invention relates to a method for making a decorative multilaminar veneer.
As is known, for veneering in the woodworking industry common veneers or multilaminar veneers are used.
The common veneer is obtained by reducing a log of fine wood into sheets.
In order to make the multilaminar veneer, logs of low-quality wood are peeled off in a circular manner. The sheets obtained are preferably but not necessarily bleached and are then dyed. The various sheets of dyed wood are then glued until a block of wood is obtained that is finished and which can have a parallelpipedon or prismatic shape. Lastly, the block of wood that is thus obtained is cut into sheets to obtain the decorative multilaminar veneer. The various layers of colored wood simulate the rings of the log of wood, recreating the grains and crown shapes of the natural veneer.
The advantage of the multilaminar veneer over a common veneer is the greater homogeneity, which makes it, for example, more suitable for the production of furniture components that have to be matched without variations in color and tone.
Currently, the decorative multilaminar veneer market has a large number of figurative patterns than can be grouped into the following major classes:
On the other hand, in production, difficulties in producing curvilinear shapes have been found.
The wavy-shape motif can have curves, but only slight curves: for example on a sheet that is longer than two meters the size of a curve is just a few centimeters because the maximum angle of intersection between the tangents to the curve never exceeds 30°. Greater radiuses have been obtained by creating lines broken up by the addition of straight portions and never through rounded continuous curves without sharp edges.
The object of the present invention is to propose a method for making a decorative multilaminar veneer that enables regular curvilinear decorative patterns with high curvature angles to be obtained.
This object is achieved by a method for making a decorative multilaminar veneer according to claim 1.
In order to understand the invention better, a description of a non-limiting embodiment thereof is shown below by way of non-limiting example that is illustrated in the attached drawings, in which:
With reference to
The method starts with peeling off in a circular manner logs of low-quality wood, for example ayous, poplar or basswood, so as to obtain sheets that are at most 2 mm thick.
The sheets obtained are first subjected to bleaching to homogenize the various sheets and then to dying to color the sheets in a uniform or varied manner.
At this point packets of sheets are prepared, each obtained by stacking a series of sheets on one another, on each of which a gluing mixture has been spread on one or both sides. The single packet of sheets, illustrated in
As illustrated in
Subsequently, a second packet is prepared, similarly to the first packet P1.1. With reference to
With reference to
At this point the mold M1 is replaced by the mold M2 of lesser curvature radius and the procedure is continued by stacking and pressing, to deform in a more accentuated curvilinear manner, a new series of packets of sheets P. This new sequence of operations is illustrated in
Lastly, the mold M2 is replaced with the mold M3 of lesser curvature radius and the procedure continues by stacking and pressing a new series of packets of sheets P to deform them in an even more accentuated curvilinear manner. This sequence of operations is illustrated in
With reference to
At this point the obtained item is extracted from the mold and countermold, the item being illustrated in
In order to be able to use the obtained item in veneering, it must, however, be returned to a regular parallelpipedon shape. Thus, as illustrated in
The block B that is thus obtained is subjected to a trimming operation, as shown in
The thus finished block B is ready to be subjected to slicing, as shown in
By modifying the profile of molds and countermold from symmetrical to asymmetrical, the veneer TA illustrated in
As can be noted, owing to the method disclosed and illustrated above a decorative multilaminar veneer with accentuated curvilinear curvature shapes can be obtained.
The regularity of these shapes consisting of curved lines that are substantially parallel to one another should be noted.
The procedure is then very simple in the various steps and requires the use of machines already present in the sector of wood working.
Obviously, this type of veneer can be used in many sectors such as furnishing, flooring, doors and windows, automobiles, ships and sailing, objects d'art or others.
It is clear that variations and/or additions to what has been disclosed and illustrated above can be added.
The shape of mold and countermold can be any in the context of the curvilinear, symmetrical or asymmetrical profile. The mold and countermold may or may not have a complementary shape.
Also the number of molds may vary according to the curvilinear design and the dimensions thereof.
The sheets of wood can be only bleached or only dyed.
The various superimposed packets do not necessarily have to be of the same wood material but can be of different wood materials or also of non-wood materials that alternate with the wood materials.
The gluing substance for joining the sheets and the packets may contain pigments or powders.
Any type of adhesive substance can be used to join the sheets of wood and make each packet of sheets.
The block B1 can be sliced directly without the addition of complementary items.
In the various blocks B, material inserts other than wood can be provided, for example inserts made of metal, plastics or other materials.
In the initial step, the sheets of wood for forming the packets can be obtained from a block of multilaminar wood instead of from a log of wood.
| Number | Date | Country | Kind |
|---|---|---|---|
| 13178899.4 | Aug 2013 | EP | regional |
