LU83960A1 - HIGH THERMAL AND SOUND INSULATION COATING FOR INTERIOR PREMISES, AND MANUFACTURING METHOD - Google Patents

Description

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The present invention relates to a coating for the? decoration of premises consisting of a suitable surface layer depending on whether one wishes to cover the floor, the walls 6 or partitions, or the ceiling of the room, and to which is linked. 5 a support underlay.

By way of example of coating of this type, mention will be made of carpets on underlays of latex, polyurethane, PVC, synthetic resin in general, or similar material, these underlays being intended to increase the comfort of the carpets 10 of which they are integral and allow also a laying - glued of these on a large number of floors without complex preparation.

The current method of manufacturing these carpets on underlay is to deposit, on the back of the carpet, a layer of latex optionally beaten in foam (or an equivalent product), and to vulcanize this layer by heating.

The use of these improved comfort carpets does not dispense with the provision of an intermediate layer, between the floor and the carpet, of a thermal and acoustic insulation material.

The Applicant has therefore sought to produce, both for floors and for walls and ceilings, a coating with which the aforementioned advantages are preserved, but which makes it possible to effect simultaneously, by the application of a single element, insulation and coating work.

To this end, the coating according to the invention, which is of the type defined above, is essentially characterized in that the sub-layer linked to the surface layer, which is

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2 "" carpet, a wall fabric, or the like, is made of a polymerizable material chosen from latex, polyurethanes, PVC or the like, if necessary in the form of foam, and contains small bodies of a material with high power thermal and phonic insulator, such as glass, expanded polystyrene, vermiculite, or the like, these small bodies being in the form of balls, grains, granules, cylinders or equivalent elements.

Furthermore, the sub-layer will have a thickness at least equal to the largest dimension of the small bodies which are incorporated therein, this largest dimension being able to vary, for example, between a few microns and 6 millimeters.

"The present invention also relates to a process for manufacturing such a coating, a process by which the latex or similar underlayment material is intimately mixed, when it is in the liquid or pasty state, with a certain quantity of these small bodies of material with high insulating power, the mixture thus obtained is spread on the back of the surface layer, a second sublayer of liquid or pasty latex or the like is produced if necessary, and vulcanized, dried or cross-links the sub-layer (s) by heating, the surface layer being protected from excessive heat during this heating. A prefabricated covering is thus obtained, the installation of which on the floor, wall, partition or ceiling is carried out by simple bonding.

There will be described in more detail below, by way of indication and in no way limitative, three embodiments of a coating, in accordance with the present invention, with reference to the appended drawing in which: - Figures 1 and 2 are partial section views 30 of two alternative embodiments of a carpet on underlay according to the invention.

Figure 3 is a similar view of a wall fabric lined with an insulating layer according to the invention.

The floor covering shown in FIG. 1 consists of a carpet 1, which can be of any type, to which a underlay 2 of latex, polyurethane, PVC, synthetic resin or similar material is bonded, these materials possibly being in the form of foam.

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In the underlay 2 are embedded small bodies 3 - beads in this case - of glass, vermiculite, expanded polystyrene, which give the whole a strong thermal and acoustic insulation.

5 It is this composite structure that constitutes the. primary feature of the present invention.

The small balls of insulating material have a diameter which is for example between 3 and 6 mm. If, instead of balls, small cylinders were used, they are used; 10 would have chosen equivalent size.

In FIG. 1, a underlay 2 has been shown, the thickness of which is several times the diameter of the largest balls. However, it has been found that with a layer 2 of thickness limited to the diameter of the largest balls, it was already possible to obtain a satisfactory result as regards thermal and sound insulation.

In accordance with the variant of FIG. 2, a second sub-layer 4 is provided in latex, polyurethane, P.V.C., synthetic resin or the like, in order to obtain a better appearance and to improve the comfort of the carpet.

FIG. 3 shows a wall fabric 5 on the back of which is formed an underlayer 2 identical to that of FIG. 1.

The coatings. according to the invention may be applied to floors or walls of raw or smooth cement, to which they will be fixed by gluing. We therefore very simply finish the premises by simultaneously obtaining the desired thermal and acoustic insulation.

„To make the coating according to the invention, the latex, when it is in a liquid or pasty state, is incorporated into the mixture intended to polymerize to give PVC, polyurethane, etc. The necessary quantity of small bodies with insulating function for a substantially homogeneous distribution, intimately mixing, then spreading, for example using a doctor blade, the mixture thus obtained on the back of the carpet, forming a layer of 'thickness at least equal to that of the largest dimension of these small bodies, • optionally a second undercoat of latex ”” a 4 liquid or pasty or other monomer mixture, and one proceeds to the vulcanization of this or these undercoats at the appropriate temperature - on the order of 130 ° C to 150 ° C for the latex.

5 To this end, the coating, over which the mixture according to the invention has been spread, is passed through an oven, the upper part of which> receives hot air for vulcanization and the lower part is cooled to protect the surface layer.

It is, of course, understood that the embodiments of the insulating coatings which have been described above with reference to the appended drawing have been given for information and are in no way limitative, and that modifications may be made without however, it departs from the scope 15 of the present invention.

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Claims (8)

2. Coating according to claim 1, characterized in that it is prefabricated and ready to be placed on the floor, wall, partition or ceiling, by simple bonding. B 3. Coating according to claim 1 or 2, characterized * in that the under-layer (2) has a thickness at least equal to the largest dimension of the small bodies (3) which are incorporated therein. 4. Coating according to any one of claims - 1 to 3, characterized in that the size of these small bodies (3) is of the order of a few microns to 6 millimeters. 5. Coating according to any one of claims 1 to 3, characterized in that the size of these small bodies (3) is of the order of 3 to 6 millimeters. At "6 6.- coating according to any one of claims 1 to 5f characterized in that there is provided a second homogeneous sublayer (4), made of a material chosen from those of which the first sublayer (2) is made up . 7. Carpet on underlay according to any one of • claims 1 to 6. 8. Wall fabric with which an underlay is associated as defined in any one of claims 1 to 6. 9. A method of manufacturing the coating according to any one of claims 1 to 8, according to which the latex in liquid or pasty state, or similar substances intended to polymerize, is intimately mixed with a certain quantity of small body (3) of material with high insulating power, the mixture thus obtained is spread on the back of the surface layer (1.5), if necessary a second sub-layer (4) of liquid or pasty latex is produced or similar, and this or these under-layers (2, 4) are vulcanized, dried or cross-linked by heating, characterized in that the surface layer (1.5) is cooled to protect it from excessive heat during this heating. 10. Coating according to any one of claims 1 to 8, characterized in that the small bodies (3) are in the form of balls. . UJvXm