EP0611201B1 - Method of producing a covering, covering and its method of laying - Google Patents

Abstract

The present invention relates principally to a method of producing a covering (1), particularly for floors, to a covering obtained by means of this method, as well as to a method of laying the said covering. According to the invention, grooves (2) are made, for example in sheets of wood, which are filled with flexible adhesive (3). After the adhesive has set, an ablation of the material between the grooves, advantageously over a depth less than the depth of the groove, uncovers the projecting contact strips.

Description

The present invention relates mainly to a method for producing a coating, in particular for floors, with a coating obtained by this process, as well as a process for laying said covering.

Man has always sought to cover the walls of dwellings, especially walls, and especially floors, with coating pleasant in appearance and with good sound insulation and / or thermal.

a) rainurer des planches de bois ;

b) remplir les rainures avec une colle colorée ;

c) coller les planches de bois ;

d) découper dans le bloc formé par la superposition des planches de bois dont les rainures sont remplies de colle, des tranches formant des planches ou lattes d'un matériau de revêtement pour sols.

Patent EP 0 309 356 describes a process for manufacturing a wooden material comprising the steps consisting in:

a) grooving wooden planks;

b) fill the grooves with colored glue;

c) glue the wooden planks;

d) cut into the block formed by the superposition of wooden planks whose grooves are filled with glue, slices forming boards or slats of a covering material for floors.

This Patent describes the possibility of using glue insulation providing acoustic insulation. However, this sound insulation may be insufficient in noisy environments, especially in buildings whose floors have poor sound insulation.

It is therefore an object of the present invention to provide a coating that has the desired acoustic qualities, including excellent soundproofing.

It is also an object of the present invention to offer such a coating with a pleasant appearance.

It is also an object of the present invention to provide a easy to maintain coating.

It is also an object of the present invention to provide a easy to install covering.

It is also an object of the present invention to provide a coating with a moderate cost price per unit area.

These objects are achieved according to the invention by a rigid coating including more flexible projecting contact strips allowing a floating mounting on a support, for example on the ground. According to the invention, one makes grooves, for example in wooden plates, which are filled flexible glue. After the glue has set, the material is removed between the grooves, advantageously on the depth less than the depth of the groove, uncovers the protruding contact strips.

a) effectuer dans une planche ou latte en bois d'épaisseur sensiblement constante, des premières ablations formant des premiers évidements ;

b) remplir les premiers évidements avec une colle souple affleurant à la surface de la plaque ou de la latte ;

c) laisser la colle se solidifier,

caractérisé en ce qu'il comporte une étape consistant à :

d) effectuer une deuxième ablation de bois sur la face de la plaque ou de la latte comportant le dépôt de colle affleurante en dégageant des dépôts de colle saillants susceptibles de former des bandes de contact.

The main object of the invention is a method of manufacturing a surface covering, in particular a floor covering comprising the steps consisting in:

a) perform in a wooden plank or batten of substantially constant thickness, first ablations forming first recesses;

b) fill the first recesses with a flexible adhesive flush with the surface of the plate or slat;

c) allow the glue to solidify,

characterized in that it comprises a step consisting in:

d) carry out a second ablation of wood on the face of the plate or of the slat comprising the deposit of flush adhesive by releasing salient deposits of adhesive capable of forming contact strips.

The invention also relates to a method, characterized in that the depth of the second ablation is constant over the entire surface of the board or plate, this depth being between 0.5 and 5 mm.

The invention also relates to a method, characterized in that the depth of the second ablation is between 1 and 3 mm.

The invention also relates to a method, characterized in that in step a) or between steps a) or b), a third ablation is carried out forming second recesses, preferably of depth less than the depth of the first ablation, in that in step b), in addition to the first recesses, the third recesses with glue, and in this that between steps b) and c), a stack of boards or slats is produced to form a block of wood that is cut into slices forming boards or slats.

The invention also relates to a method, characterized in that the third recesses are filled in step b) with an adhesive having mechanical properties different from those of the adhesive used for fill in the first recesses.

The invention also relates to a method, characterized in what the filling glue of the third recesses presents in the state solid a rigidity higher than that of the adhesive used for the filling of the first recesses.

The invention also relates to a method, characterized in what the filling glue of the third recesses is a glue colorful.

The invention also relates to a method, characterized in that the recess (s) is (are) filled with glue by injection or extrusion.

a) effectuer dans une planche ou latte en bois (1) d'épaisseur sensiblement constante, des premières ablations formant des premiers évidements (2, 2.1) ;

b) remplir les premiers évidements (2, 2.1) avec une colle souple affleurant à la surface de la plaque ou de la latte (1);

c) laisser la colle se solidifier;

caractérisé en ce qu'il comporte une étape consistant à :

d) effectuer une deuxième ablation de bois sur la face de la plaque ou de la latte (1, 11) comportant le dépôt de colle affleurante en dégageant des dépôts de colle saillants susceptibles de former des bandes de contact (3.1) ;

e) mettre en contact direct des bandes de contact (3.1) du revêtement de sol obtenu avec un support (4).

The invention also relates to a method for producing a floor covering, characterized in that it comprises the steps consisting in:

a) make in a wooden board or slat (1) of substantially constant thickness, first ablations forming first recesses (2, 2.1);

b) fill the first recesses (2, 2.1) with a flexible adhesive flush with the surface of the plate or the slat (1);

c) allow the glue to solidify;

characterized in that it comprises a step consisting in:

d) carry out a second ablation of wood on the face of the plate or of the slat (1, 11) comprising the deposit of flush adhesive by releasing salient deposits of adhesive capable of forming contact strips (3.1);

e) bringing the contact strips (3.1) of the floor covering obtained into direct contact with a support (4).

The invention also relates to a method characterized in that the depth (E3) of the second ablation is constant over the entire surface of the board or plate (1, 11), this depth (E3) being between 0.5 and 5 mm, preferably between 1 and 3 mm.

• la figure 1 comporte des vues des diverses étapes de réalisation d'un premier exemple de réalisation d'un revêtement selon la présente invention ;
• la figure 2 comporte des vues des diverses étapes de réalisation d'un deuxième exemple de réalisation d'un revêtement selon la présente invention ;
• la figure 3 comporte des vues des diverses étapes de fabrication d'un troisième exemple de réalisation d'un revêtement selon la présente invention.

The invention will be better understood by means of the description below and the appended figures given as nonlimiting examples, and in which:

• Figure 1 includes views of the various steps for producing a first embodiment of a coating according to the present invention;
• Figure 2 includes views of the various stages of production of a second embodiment of a coating according to the present invention;
• Figure 3 includes views of the various stages of manufacturing a third embodiment of a coating according to the present invention.

In FIGS. 1 to 3, the same references have been used for designate the same elements.

In Figure 1, we can see the various stages of production of a coating according to the invention from a wooden board or slat 1, as illustrated in Figure la. The board or slat 1 is grooved in a U of constant section over the entire length of the board or batten 1, as illustrated in Figure 1b.

The grooves 2 are filled with flexible adhesive 3, by example using a flexible polyurethane adhesive. We can implement various techniques for filling the grooves with glue 2. For example, glue is poured into the grooves 2 or, is injected therein by injection or extrusion.

After the glue 3 has solidified, a board or a wooden slat 1 of thickness E1 comprising strips of flexible material flush. The ablation is then carried out on a depth E3 of the wood between the adhesive deposits 3, which then form contact strips protruding elastic bands 3.1. Advantageously, the thickness E3 of the ablations is less than the remaining thickness E2 of the plank or of the wooden slat 1 as well than at the depth of the grooves 2. This depth E3 depends on the crushing maximum of the protruding elastic contact strips which it is desired to tolerate. E3 is for example between 0.5 and 5 mm, between 0.5 and 10 mm or, preferably between 1 and 3 mm, in particular according to crushing standards tolerated in force in the countries for which the coating is intended.

In Figure 1e, we can see an element of a coating according to the present invention placed on the ground. The protruding contact strips 3.1 are crushed under the weight of the coating and the load, for example people and / or furniture. The wooden board 1 is not in contact with the support 4, which provides excellent sound insulation. The elements of coating according to the present invention are assembled to form the complete coating of the surface, for example the ground. Advantageously, each element has the standardized dimensions of the slats or plates of parquet. However, the coating according to the invention, in addition to the fact that it provides excellent sound insulation, allows easier implementation, advantageously by direct laying, protruding contact strips 3.1 on the support 4 without the need for joists or other supports intermediaries. In addition, protruding elastic contact strips allow compensate for an irregularity in the support 4.

In Figure 2, we can see an alternative embodiment of floor covering according to the present invention combining the decoration described in Patent EP 0 309 356 and the projecting flexible insulating strips acoustic.

In Figure 2a, we can see a board or slat 1 comprising a succession of first grooves 2.1 of a first depth P1 interleaved with a succession of second grooves 2.2 of a second depth P2, P1 being greater than P2. Grooves 2.1 and 2.2 are separated by ribs 5 of constant height.

In the alternative embodiment illustrated in FIG. 2, the face of the board or batten 1 opposite the grooves 2 door opposite grooves 2.1 of the projections 6 of low height.

The grooves 2.1 are filled with a flexible adhesive, for example a neoprene, polyurethane, epoxy-polyurethane adhesive, advantageously expanded, depending on the loads to be supported and / or the insulation desired acoustics, while the grooves 2.2 are filled, for example, with a colored hard glue, for example based on epoxy resin, as illustrated on Figure 2b. The desired adhesive can be given the desired properties. work to fill the grooves 2.2. For example, you can use glue conductive (charged with metallic particles or carbon) to evacuate electrostatic charges. A coating made with glues conductive can be used in rooms with electronic equipment whose functioning is likely to be disturbed by static electricity, such as computers. The ribs 5 are covered with a small thickness of glue. The grooves 2.2 may not be completely filled with glue to take account of the projections 6.

We ensure the bonding of a superposition of boards or slats 1, as can be seen in Figure 2c. The projections 6 penetrate into the grooves 2.2. We cut the block formed by the superposition of the boards 1 of FIG. 2c in slices according to section planes C parallel to each other and perpendicular to the planes of the boards or slats, each cutting plane C passing through a rib 5. A saw is used, for example a circular saw or tape with sufficient blade thickness to completely erase the rib 5. The thickness of the cutting line referenced E4 is symbolized by the lines 7 in FIG. 2C. The section planes C pass through a rib 5 on two, so as to obtain boards or slats 11 of thickness E5 of the FIG. 2d comprising on a first face decorative elements formed by the colored hard glue 8 separated by wooden elements 9, and on the face opposite, strips of flexible glue 3 separated by wooden pieces 10.

By removing the wood in elements 10, as illustrated in figure 2e, we discover contact strips 3.1 projections, which as illustrated in Figure 2f, allow floating mounting on a support 4 for the coating according to the present invention.

It should be noted that the board or batten 1 of FIG. 2a is very close to or identical to the board illustrated in Figure 9 of the Patent EP 0 309 356 cited above. However, section plane C in the case of the Patent mentioned above goes through the middle of the grooves D1 and D2 and not through the ribs 5, as in the case of the present invention. Furthermore, this Patent does not describe ablation operation of part of the wood of the elements 10, unlike the present invention (see Figure 2e).

In Figure 3, we can see a floor covering according to the present invention constituting an improvement of the floor covering of Figures 5 and 6 of the aforementioned Patent EP 0 309 356. Each plate 1 has a succession of grooves 2.1 and 2.2 separated by a 5 'long rib width, the grooves 2.1 and 2.2 close being separated by a rib 5 of narrow width, as can be seen in Figure 2a. The grooves 2.1 are filled with flexible glue, while the grooves 2.2 are filled with a colored hard glue, for example based on epoxy resin.

The boards or slats 1 are glued to each other others, as can be seen in Figure 3b. We cut according to that we cut C perpendicular to the plane of the boards or slats 1 and passing by the ribs 5 of small width. We thus obtain planks or slats 11 of Figure 3c.

We carry out the partial ablation of the wood of the elements 10, as illustrated in figure 3d. The contact strips 3.1 allow a floating mounting of the floor covering according to the present invention, as illustrated in Figure 3e.

The floor covering in Figure 3 is different from the floor covering soil of Figures 5 and 6 of the aforementioned Patent EP 0 309 356, in that, on the one hand, a flexible adhesive is used, at least in the grooves 2.1 and, on the other hand, performs (as can be seen in Figure 3d) the ablation of part of the wood elements 10 separating the flexible bands 3.

It is understood that the present invention is not limited to the implementation of grooves to obtain strips, but can also apply to other shapes, like for example studs, in particular protruding cylindrical, obtained in holes made in wooden boards or slats.

Similarly, the present invention is not limited to the implementation work of wooden boards or plates, but extends on the contrary, for example, to wood derivatives such as wood particle boards or panels of medium density fibers (MDF).

The coating according to the present invention can be applied on the floors but also on the walls to obtain the characteristics desired acoustics. It can be provided, on the exposed face, with elements absorbing acoustic waves, for example foam deposits at open cells in grooves.

Claims (10)

1. A process of manufacture of a surface covering, especially a ground covering comprising stages consisting of:

   a) making in a plank or lath of wood (1) of more or less constant thickness, first ablations forming first recesses (2, 2,1) ;

   b) filling the first recesses (2, 2.1) with a flexible adhesive flush with the surface of the plate or lath (1);

   c) leaving the adhesive to solidify,

   characterised in that it comprises a stage consisting in ;

   d) making a second ablation of wood in the face of the plate or lath (1, 11) including the depositing of adhesive flush with the surface while clearing away protruding deposits of adhesive likely to form contact strips (3.1).
2. A process in accordance with claim 1, characterised in that the depth (E3) of the second ablation is constant over the whole surface of the plank or plate (1,11), this depth (E3) being between 0.5 and 5 mm.
3. A process in accordance with claim 2, characterised in that the depth (E3) of the second ablation is between 1 and 3 mm.
4. A process in accordance with any one of the preceding claims characterised in that in stage a) or between stages a) or b) a third ablation is made forming second recesses (2.2), preferably of a depth less than the depth of the first ablation, in that in stage b), in addition to the first recesses (2.1 ), the third recesses (2.2) are filled with adhesive, and in that between stages b) and c), the planks or laths (1) are stacked to form a block of wood which is cut into sections forming planks or laths (11).
5. A process in accordance with claim 4, characterised in that the third recesses (2.2) are filled in stage b) with an adhesive having mechanical properties different from those of the adhesive applied to fill the first recesses (2.1).
6. A process in accordance with claim 5, characterised in that the filling adhesive of the third recesses presents in the solid state a rigidity greater than that of the adhesive applied to the filling of the first recesses (2,1).
7. A process in accordance with claims 4, 5 or 6, characterised in that the filling adhesive of the third recesses (2.2) is a coloured adhesive.
8. A process in accordance with any one of the preceding claims. characterised in that the recess or recesses (2.1, 2.2) is (are) filled with adhesive by injection or extrusion.
9. A process of making a floor covering, characterised in that it comprises stages consisting of:

   a) making in a plank or lath of wood (1) of more or less constant thickness, initial ablations forming first recesses (2, 2.1) ;

   b) filling the first recesses (2, 2.1) with a flexible adhesive flush with the surface of the plate or lath (1);

   c) leaving the adhesive to solidify ;

   characterised in that it comprises a stage consisting in :

   d) making a second ablation of wood on the face of the plate or lath (1, 11) comprising the depositing of adhesive flush with the surface while clearing away protruding deposits of adhesive likely to form contact strips (3.1);

   e) bringing the obtained ground covering contact strips (3.1) into direct contact with a support (4).
10. A process in accordance with claim 9, characterised in that the depth (E3) of the second ablation is constant over the whole surface of the plank or plate (1, 11); this depth (E3) being between 0.5 and 5 mm, preferably between 1 and 3 mm.

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