FR2710674A1 - Parquet flooring made of end-grained wood - Google Patents

Abstract

The invention relates to the manufacture of parquet flooring made of end-grained wood, consisting of square tiles (1) held by a fibreglass grid (2). The grid/tiles association allows the creation of hollow joints (4) which are necessary for the dimensional variation of the tiles (swelling or shrinkage). The tiles plus grid assembly forms parquet floor panels which can then be marketed. Upon laying, the panels are bonded onto various backings (wooden panels or screed) forming a parquet flooring assembly. The finishes lie in producing joints (3) with recovery of the sawdust, polishing (sanding) and glazing. The device makes it possible to valorise regional woods combining both the specific hardness of "endgrained wood" and an aesthetic appearance of the marquetry type, offering a novel product for floor coverings.

Description

The present invention relates to the production of end-of-life parquet.

Most of the parquet floors produced are wire parquet.

The manufacture of these floors excludes certain types of wood. For example, pine is neglected in the manufacture of wire wood because: - too soft - too much loss during processing
The choice of end grain parquet is a response to the use of these woods.

 According to a first characteristic, end-of-life parquet makes it possible to return to the market regional woods not used until now in woodworking, such as hardwood or softwood species.

This new process also makes it possible to considerably increase the resistance to wear, due to the fact that it has an end grain surface.

 The manufacturing process is as follows: juxtaposition of squares, carefully respecting the joints. Because of their dimensional variation sensitive to the humidity of the ambient air, the squares require space. This space allows each square to "play" freely.

This is why the squares are held in place by a glued fiberglass grid. This grid creates the space necessary for the joints. In addition, this juxtaposition of squares allows parquet sheets to become marketable.

These plates are then glued to the installation site on different supports. (Panels or plates)
Then you have to sand the parquet by recovering the sanding sawdust in order to make a paste. This paste is therefore obtained with sanding sawdust and a wood putty binding liquid. It will allow to fill the joints superficially in order to keep the space necessary for the squares, so that they can as we mentioned above, "play" freely.

 The finishing consists of a final sanding (bare the squares) and a vitrification of the parquet.

The accompanying drawings illustrate the invention:
Figure 1 shows in perspective the squares device, grid and seals.

Figure 2 shows different models.

FIG. 3 represents the squares glued to the support with the grid, the surface filling of the joint and the hollow joint.

Figure 4 shows an enlargement of a joint.

With reference to these drawings, the device comprises two essential phases.

In workshop manufacturing: (Fig. 1): a junclaposition of the squares (1) held by an adhesive grid (2) made of fiberglass, glued with a fast pnse glue forming joints (~ l necessary for the dimensional variation of the squares .

We obtain plates that can be marketed according to the chosen equipment (fig.

2).

In site installation: - These plates are glued to a screed or panel support (fig. 3) forming a parquet assembly according to the plaice device (1), grid (2). non-filled seal (3).

- The next phase consists of the sanding operation with recovery of sawdust.

 - Preparation of joint paste, obtained with a mixture of sanding sawdust and a wood putty binder.

- Superficial filling of the joints (3) with this paste coated with an oatula over the entire surface of the plates. We obtain a surface joint and a hollow joint (4). The last sanding operation is to present a clean surface. cleaning the squares (1) and a surface smoothing of the joints (3).

- Vitrification of the parquet with the use preferably of a "hard bottom" to soak the squares and the joints.

 By way of non-limiting example, a plaice will have a dimension of the order of 10 cm for the length. 5 cm for width and 15 mm for thickness.

A plate, assembly of several squares, will have according to the models a length of the order of 50 cm and a width of the order of 30 cm.

 The device is particularly intended for floor coverings. It can be used for private or public buildings, as a first coating or as a replacement for flexible materials (carpet or linoleum, etc.).

Claims (4)

 1) End-of-life parquet characterized in that it consists of squares I juxtaposed and maintained on an adhesive grid 2 forming seals 3 necessary for the dimensional variation of these squares.  2) Parquet according to claim 1) characterized in that the squares 1 constitute plates glued to a screed or panel support in order to form a parquet assembly.  3) Parquet according to claim 1) and 2) characterized in that it comprises a surface seal 3 and a hollow joint 4 allowing the dimensional variation of the squares.  4) procedure for laying a parquet according to any one of claims 1) to 3) characterized by the surface filling of the hollow joints 4 is carried out using a paste Composed of sawdust mixed with a wood putty binder.