EP1061202B1 - Method for laying a panel-shaped covering on a support - Google Patents

Description

The present invention relates to a method of laying on a support, a coating comprising a set of juxtaposed plates, of the type comprising a step of application and binding on the support of a bituminous sheet along a connecting face thereof. ci and a step of applying and binding the facing plates on the bituminous sheet along a receiving face thereof.

It is known, particularly from DE-42 20 770, to use a bituminous sheet for laying tiles. This bituminous sheet is interposed between the support and the tiles. In order first to ensure the binding of the bituminous sheet to the support and then the joining of the tiles to the bituminous sheet, it is known to heat the two faces of the hardwood.

This heating is carried out directly on the bituminous sheet, before it is put in place on the support and before the tiles are placed on the upper face of the bituminous sheet.

Although the result obtained by such a method is very satisfactory, the implementation of the method is long and difficult, particularly because of the need to locally heat the surfaces of the bitummeuse sheet before setting it up, and before recovery of it by the tiles to ask.

EP-A-0,463,933 discloses a process according to the preamble of claim 1.

Thus, the object of the invention is to propose a method for laying a coating that does not have the drawbacks mentioned above and that makes it possible to obtain the same laying reliability as with a previously heated bituminous sheet, while still having easy implementation.

For this purpose, the subject of the invention is a method of laying, on a support, a coating comprising a set of juxtaposed plates, of the aforementioned type, characterized in that the bituminous sheet is applied at ambient temperature without heating on the surface. support, in that the facing plates are placed on the receiving surface of the bituminous sheet while the latter is at ambient temperature, and in that a step of bonding the facing plates is implemented and of the bituminous sheet, and in that
the bonding step between the facing plates and the bituminous sheet comprises heating the facing plates after they have been applied to the bituminous sheet, this heating being applied from the exposed surface of the facing plates and up to obtaining a heating and partial melting of the receiving face of the bituminous sheet.

• l'échauffement de la face exposée des plaques de parement, après qu'elles ont été appliquées sur la feuille bitumineuse, est effectué jusqu'à obtenir une température de la face de réception comprise entre 80°C et 400°C, et de préférence sensiblement égale à 240°C;
• l'étape de liaison entre les plaques de parement et la feuille bitumineuse comporte la mise en oeuvre d'une couche d'un revêtement adhésif sur la face de réception de la feuille bitumineuse ;
• l'étape de liaison entre les plaques de parement et la feuille bitumineuse comporte une étape préalable de chauffage des plaques de parement avant leur application, jusqu'à une température suffisante pour obtenir, après application des plaques de parement, un échauffement et une fusion partielle de la face de réception de la feuille bitumineuse ;
• les plaques de parement sont amenées avant leur application à une température comprise entre 80°C et 200°C et de préférence sensiblement égale à 120°C ; et
• l'étape de liaison entre le support et la feuille bitumineuse suivant la face de liaison de celle-ci comporte la mise en oeuvre d'un revêtement adhésif sur la face de liaison de la feuille bitumineuse.

According to particular embodiments, the method comprises one or more of the following characteristics:

• the heating of the exposed face of the facing plates, after they have been applied to the bituminous sheet, is carried out until a temperature of the receiving face of between 80 ° C. and 400 ° C. is obtained, and preferably substantially equal to 240 ° C;
• the bonding step between the facing plates and the bituminous sheet comprises the implementation of a layer of an adhesive coating on the receiving face of the bituminous sheet;
• the binding step between the facing plates and the bituminous sheet comprises a prior step of heating the facing plates before their application, to a temperature sufficient to obtain, after application of the facing plates, heating and partial melting the receiving face of the bituminous sheet;
• the facing plates are brought before their application to a temperature between 80 ° C and 200 ° C and preferably substantially equal to 120 ° C; and
• the bonding step between the support and the bituminous sheet following the bonding face thereof comprises the implementation of an adhesive coating on the bonding face of the bituminous sheet.

• La figure 1 est une vue en section d'une feuille bitumineuse utilisée dans le procédé selon l'invention ;
• La figure 2 est une vue en perspective illustrant la mise en place de feuilles bitumineuses en bande sur un support ;
• La figure 3 est une vue en perspective illustrant la solidarisation des carreaux sur la feuille bitumineuse ; et
• La figure 4 est une vue en coupe transversale du revêtement achevé.

The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the drawings, in which:

• Figure 1 is a sectional view of a bituminous sheet used in the process according to the invention;
• FIG. 2 is a perspective view illustrating the placing of bituminous sheets in a strip on a support;
• Figure 3 is a perspective view illustrating the fastening of the tiles on the bituminous sheet; and
• Figure 4 is a cross-sectional view of the finished coating.

Figure 1 shows an example of a bituminous sheet 10 used for carrying out the method according to the invention. The method is described here for example for laying tiles.

The sheet is for example constituted by the product marketed in France by AXTER under the name ROLLSTICK. This sheet has a total thickness of about 4 mm. Other thicknesses may nevertheless be used depending on the field of application, the thickness advantageously being between 1 and 6 mm.

The bituminous sheet is essentially formed of a central layer or core 12 consisting of a homogeneous bitumen quality structured on a central frame. The two sides of the bituminous sheet, noted 14 and 16, each comprise a self-adhesive coating 18, 20 completely covering the central layer 12. Initially, the self-adhesive coatings 18, 20 are covered by protective films 22, 24.

The central layer 12 consists of a polymer-modified bitumen quality, for example styrene-butadiene-styrene-type thermoplastic elastomers, or styrene-butadiene-ethylene-styrene or polypropylene-type resins, of atactic polypropylene type or polyolefin copolymer or the like.

The self-adhesive materials used to form the coatings 18, 20 are for example made of bitumen modified by addition of tackifiers or tacky polymers and resins.

Finally, the protective films 22 and 24 are peelable plastic films, consisting for example of silicone films. These can be removed manually, immediately before applying the bituminous sheet or laying the tiles.

Advantageously, the bituminous sheet has a band shape and is initially wound on itself to form a coil. This presentation facilitates its transport and its implementation on the substrate to receive the coating.

The laying method of the coating according to the invention will now be described with reference to the following figures.

After the surface of the floor or wall to receive the tiles has been cleaned, this is a support on which the bituminous sheet will be applied and bound. The support can be of any kind such as concrete, wood, plaster or even a coating of earlier tiles.

For the implementation of the bituminous sheet, the operator initially removes the peelable protective film 24 covering the adhesive layer 20 provided on the face 16 of the bituminous layer intended to be applied against the support. This face is designated in the following description by connecting face.

The bonding face being thus exposed, several bituminous strips 10A, 10B are unwound side by side on the support, as shown in FIG. 2. Thus, the bonding face 16 covered with the self-adhesive coating 20 is applied against the surface of the support 30. The presence of the self-adhesive coating ensures the binding of the bituminous sheet with the support.

The connections between sheets are not laid by overlapping but edge to edge. When laying tiles in a damp area such as a bathroom, it is necessary to ensure the tightness of the coating. Thus, the regions of the connections between the bituminous sheets are advantageously heated by means of a gas burner. During heating, the bitumen layer flows into the fitting so that the latter disappears more or less. In particular, the opposite edges of the adjacent sheets are melted by heating until local melting, which leads to obtaining a substantially continuous layer of bitumen.

Alternatively, the gap defined between two adjacent sheets is filled with a sealing material such as molten bitumen, emulsion or solvent phase to ensure the continuity of the surface defined by the bituminous sheets.

Advantageously, before arranging the bituminous sheets side by side, a strip coated with reinforced self-adhesive aluminum is applied on the support along the future lines of junction between two adjacent sheets.

The presence of this band below the boundary region between two bituminous sheets allows for substantial heating of the edges of the sheets until they form a continuous surface.

After the bituminous sheets have been thus applied and bonded to the support, the protective film 22 is torn off progressively by manual traction exerted in the direction of the arrow F, as illustrated in FIG. 2.

Thus, the removal of the protective film 22 allows the updating of the self-adhesive coating 18 covering the face 14 of the bitumen layer, this face constituting the receiving face of the tiles.

As shown in FIG. 3, the tiles denoted 32, or any other type of plate facing, are then applied directly to the receiving face 14, and more specifically to the self-adhesive coating 18.

The connection between the bituminous sheet 10 and the tiles is thus provided by the self-adhesive coating 18, after the simple application of pressure on the tiles.

However, advantageously, the tiles thus arranged are heated from their exposed surface by applying the flame of a gas burner 34. The tiles are sufficiently heated to cause the heating of the receiving face 14 of the bitumen layer. In particular, the heating of the exposed face of the tiles is advantageously carried out until a temperature of the receiving face 14 is between 80 ° C. and 400 ° C., and preferably substantially equal to 240 ° C.

It is understood that raising the temperature of the receiving face 14 improves the bond between the bitumen layer 12 and the tiles 32, by softening and partial melting of the receiving face 14, the latter then adhering to the tiles .

At the same time, the connecting face 16 undergoes a temperature rise up to a temperature between 60 ° C and 300 ° C and preferably about 80 ° C.

Depending on the nature or thickness of the tiles used, the surface of each tile should be heated between one-half second and two seconds per centimeter and commonly about one second per centimeter. For example, a 20 cm x 20 cm tile having a thickness of between 6 and 9 mm needs to be heated for about 20 seconds.

Thus, the heat source is applied at a given point of the tiles installed for a period of between one second and two minutes and preferably substantially equal to 30 seconds.

Insofar as the heating of the receiving face 14 is carried out while the tiles 32 are already in place, all the tiles can be initially arranged, as illustrated in FIG. 3, before starting the heating operation. . The heating being performed while the entire surface of the coating is already installed, the operator can easily move and handle the heating tool, without risk of damaging the bituminous sheet.

Alternatively, the step of heating the receiving face of the tiles of the bituminous sheet may be omitted, the connection of the tiles to the bituminous sheet being provided only by the self-adhesive coating 18.

In addition, according to another variant of implementation, the self-adhesive coatings can be eliminated insofar as the connection between the bituminous sheet and the support, as well as the connection between the tiles and the bituminous sheet are ensured by heating the considered faces of the bituminous sheet.

Finally, according to yet another variant, the tiles can be applied after being preheated in an oven, or by means of a gas burner. The tiles are thus preheated before their application, at a temperature sufficient to allow, after their application, a softening or partial melting of the receiving face 14 of the bituminous sheet. They are advantageously brought to a temperature of between 80 ° C. and 200 ° C. and preferably substantially equal to 120 ° C.

After completion of the laying phase of the tiles, a joint cement 36 is applied in a known manner between the tiles, as shown in FIG. 4.

The method described here can be advantageously used with ceramic tiles or tiles, porcelain, cement, concrete, natural stone, metal or a composite material reinforced with fibers. With this type of material, the method advantageously comprises a step of heating the tiles to cause softening of the receiving face of the bituminous sheet.

The facing plates may also be made of wood slabs, such as parquet or paneling or derivatives thereof, such as "Formica", melamine or varnished panels.

The use of a bituminous sheet for the laying of wood sheets avoids the use of traditional adhesive substances that contain aromatic substances that can cause health problems for installers.

The method is particularly efficient and fast for laying facing plates. In addition, the use of a bituminous sheet reduces the risk of cracking and cracking of the coating while providing a waterproof coating.

The coating put in place according to the invention can easily be replaced or repaired by replacing only some tiles. For this purpose, the bituminous sheet is left on its support, and only the tiles to be replaced are removed. In their original location, new tiles are reinstalled. To ensure the connection of the new tiles, they are heated from their free surface after installation, to cause softening of the receiving face of the bituminous sheet.

For all heating phases of the bituminous sheet, a hot air blowing device can be used instead of the gas burner.

Claims (6)

1. Method for laying onto a support a covering which comprises a number of juxtaposed facing boards (32), of the type with a stage for applying and connecting onto the support a bituminous sheet (10) along a connecting face (16) of the latter, and a stage for applying and connecting the facing boards (32) onto the bituminous sheet (10) along a face (14) which takes the latter, wherein the bituminous sheet (10) is applied at ambient temperature, without heating, onto the support, and the facing boards (32) are put in place on the face (14) which takes the bituminous sheet (10) while the latter is at ambient temperature, and a stage for connecting the facing boards (32) and the bituminous sheet (10) is used, characterised in that the stage for connection between the facing boards (32) and the bituminous sheet (10) involves heating of the facing boards after they have been applied to the bituminous sheet (10), this heating being applied from the exposed surface of the facing boards (32) and up to the time when heating and partial fusing of the face (14) which takes the bituminous sheet, occur.
2. Method according to Claim 1, characterised in that the exposed face of the facing boards (32), after they have been applied onto the bituminous sheet, is heated until a temperature of the receiving face (14) between 80°C and 400°C, and preferably more or less equal to 240°C; is reached.
3. Method according to Claim 1, characterised in that the stage for connecting between the facing boards (32) and the bituminous sheet (10) consists of applying a layer of adhesive coating (18) on the face (14) which takes the bituminous sheets.
4. Method of laying onto a support a covering consisting of a number of juxtaposed facing boards (32), of the type which involves a stage for applying and connecting to the support a bituminous sheet (10) along a connecting face (16) of the latter and a stage for applying and connecting facing boards (32) onto the bituminous sheet (10) along a face (14) which takes the latter, wherein the bituminous sheet (10) is applied at ambient temperature, without heating, onto the support, and the facing boards (32) are put in place on the face (14) which takes the bituminous sheet (10), while the latter is at ambient temperature, and a stage for connecting the facing boards (32) and the bituminous sheet (10) is applied, characterised in that the stage for connection between the facing boards (32) and the bituminous sheet (10) contains a prior stage of heating the facing boards (32) before applying them, up to a temperature sufficient to achieve, after applying the facing boards (32), heating and partial fusing of the face (14) which takes the bituminous sheet.
5. Method according to Claim 4, characterised in that the facing boards (32) are brought, before they are applied, to a temperature between 80°C and 200°C, and preferably more or less equal to 120°C.
6. Method according to any one of the above claims, characterised in that the stage for connecting between the support (30) and the bituminous sheet (10) along the latter's connecting face (16) involves using an adhesive coating (20) on the connecting face (16) of the bituminous sheet.

Images