PT100519A - Process for the manufacture of a decorative product for walls or for floors, in the form of mosaic or plate, consisting of a coloured film of pigmented cork-bark- granulate agglomerate - Google Patents

Abstract

Process for the manufacture of a decorative product in the form of mosaic or plate consisting of a coloured film (face) of pigmented cork-bark-granulate agglomerate, by means of a back-glued aqueous dispersion. The pigmentation of the cork-bark granulate (gauge less than 3 mm) is obtained by means of aqueous dispersion of the pigments, having as base = 100% by mass (weight) of water relative to the granulate, the percentage of pigment applied being able to drop to 60%, depending on the degree of pigmentation desired, it being possible, also, for a small fraction of the granulate to be replaced by natural wear scraps (with or without pigmentation) and/or granulate of a gauge greater than 3 mm. The decorative product obtained according to the present invention has an application as a decorative product for walls or for floors, simultaneously serving as thermal and acoustic installation, utilizing the properties of the cork bark.

Description

64.806 25.MAU99L ·

The present invention relates to a process for the manufacture of a decorative product in the form of a mosaic or a non-woven fabric, and the method of manufacturing a decorative product in the form of a mosaic or a mosaic. plate, consisting of colored film (face) of agglomerate of pigmented cork pigmented by aqueous dispersion, cast late.

Usually the pigmentation of the resin is carried out, a process that does not produce effective coloration of the cork granules (cellular structure " waterproof ").

In the process object of the present invention the pigmentation of cork granules of a caliber of less than 3 mm is obtained - extremely high surface area by means of aqueous pigment dispersion which significantly increases its penetration and dispersion in the granulate, the waterproofing properties are known. The process of manufacturing the decorative product according to the invention will hereinafter be described in detail, the same comprising the following operations; 1) pigmentation of cork granulate of a caliber of less than 3 mm by means of spraying an aqueous dispersion on a barrel (wobble) on the cork pigment of a pigment preparation having N-based 100% by weight of water relative to the granulate, the percentage of pigment applied falls by up to 60% depending on the degree of pigmentation desired, allowing for an extensive range of colors and shades, and for decorative effects a small fraction of the granulate is replaced with natural shredder chips without pigmentation) and / or granules of a size greater than 3 mm; 10

2) drying the pigmented granulate in a suitably heated oven to a residual moisture of less than 5% by mass, the average density of the granulate

The pigment after drying of 85 + 10 kg / nr; 3) after drying, agglutination of the granulate with a catalyzed polyurethane resin and subsequently pressing thereof into molds;

Mod. 71-20,000 ex. 4) baking in the oven for about 4 hours at 150 ° C - 160 ° C; 5) demolding, backing and rolling of the resulting block into films, of a thickness of less than 1,5 mm, the film density being 400 kg / m 2 and H 2 2; 6) thereafter, composition of the color films by pasting, of heterogeneous composition produced from " rests " recycled from the remaining production lines of agglomerates composed of cork or, alternatively, of medium density wood agglomerates (eg MDF ); (7) grinding of the plates, these being calibrated to the desired final thickness (from 1.5 to 7 mm), followed by grading in tiles or plates, grinding and finishing, said finished product being able to be presented in simple form - only sanded - or varnished with gloss or without gloss using an acrylic lacquer or polyurethane. The decorative product obtained according to the invention is applied as a decorative wall or for flooring, serving both thermal and acoustic insulation, taking advantage of the potentialities of cork.

Lisbon,

By SOCIEDADE OORTICEIRA ROBINSON BROS, S.A.

NOCHRONOCHLORHYLENE NON-BREAKING HYPHEN (8209) Ιηί'υνπβΙ Cfirtórl © - Contingency, 3, ϊ.β-110ΰ IfiWtiNi = 4 =

Claims (1)

64,806 Mod. 71 - 20.COO ex. - Process for the manufacture of a decorative wall or flooring product in the form of a mosaic or plaque, serving simultaneously acoustic thermal insulation, consisting of colored film (face) of pigmented cork granulated agglomerate , characterized in that pigmentation of the cork granulate is achieved by spraying an aqueous dispersion onto the cork granulate of a pigment preparation based on 100% by weight of water relative to the granulate, and the percentage of pigment applied can be lowered up to 60% depending on the degree of pigmentation desired. 2. A method according to claim 1, characterized in that the cork granulate is of a size smaller than 3 mm. 3. A method according to claim 1, characterized in that a small fraction of the granulate can be replaced with natural stripping shavings (with or without pigmentation) and / or granules of a size greater than 3 mm. 2. A process according to any of the preceding claims, characterized in that it also comprises the following operations: = 5 = 30 1 5 10 15 Mod. 71-20,000 ex. - 90 08 20 25 30 64 806 2) after drying, agglutination of the granulate with a catalyzed polyurethane resin and subsequently pressing thereof into molds; 3) baking in the oven for about 4 hours at 150 ° C - 160 ° C; 4) demolding, backing and rolling the resulting block into films of a thickness of less than 1.5 mm, the film density > 400 kg / m and Hr Z-, 25) subsequently composition of the colored films by one-time bonding, of heterogeneous composition, produced from recycled "residues" of the remaining productive lines of agglomerates with cork stations or alternatively , medium density wood pellets; 6) grinding of the plates, these being calibrated to the desired final thickness (from 1.5 to 7 mm), followed by grinding in tiles or plates, grinding and finishing, said finished product being presented in simple form - only sanded - or varnished with gloss or without gloss using an acrylic or polyurethane varnish. Lisbon, KM 1991