Multilayered fibrous product and a process for the...

D - Textiles – Paper – 21 – H

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D21H 17/69 (2006.01) D21H 27/38 (2006.01) D21H 11/16 (2006.01) D21H 15/12 (2006.01)

Patent

CA 2445100

The multi-layer fibrous product and a process for producing it. According to the present invention the fibre product comprises at least two overlapping fibre layers, whereby the one that forms the top layer of the product contains filler and is lighter than the layer under it and is at least essentially opaque. According tothe present invention the filler of the top layer consists at least partially of cellulose or lignocellulose fibrils, on which light scattering material particles have been precipitated. The present invention can be used, for example, to produce white surface liner with a lighter top layer without impairment of the strengthof the surface. Thus, the grammage of the layer can be at least about 5% by weight less than a top layer, which has the corresponding opacity and formation, and which has been produced from the same fibre material and mineral pigments.

L'invention porte sur un produit fibreux multicouche et sur un procédé de production. Selon cette invention, le produit fibreux comprend au moins deux couches fibreuses se chevauchant, l'une, formant la couche supérieure du produit, contient une charge et est plus légère que la couche sous-jacente et est au moins essentiellement opaque. Selon cette invention, la charge de la couche supérieure comprend au moins partiellement une cellulose ou des fibrilles de lignocellulose sur laquelle des particules légères de matériau de diffusion ont été précipitées. Cette invention peut être utilisée, par exemple, pour produire des revêtements à surface blanche dont la couche supérieure plus légère ne compromet pas la résistance de la surface. Par conséquent, le grammage de la couche peut être au moins environ 5 % en poids inférieur à celui de la couche supérieure qui a la même opacité et la même formation et qui a été produite à partir du même matériau fibreux et des mêmes pigments.

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