Multilayered fibrous product and process for the production thereof

A fibrous product according to any of the preceding claims, characterised in that it comprises white lined top liner or coated white lined liner.

A fibrous product according to any of the preceding claims, characterised in that its grammage is preferably about 50 to 500 g/m2, typically about 80 to 350 g/m2, in which case the grammage of the top layer is about 20 to 125 g/m2, preferably about 50 to 70 g/m2.

A fibrous product according to any of the preceding claims, characterised in that the distribution of the grammage between the top and back layers are between about 20/80 . . . 40/60.

A fibrous product according to any of the preceding claims, characterised in that the top layer (1;

• 3) is produced from chemical cellulose pulp comprising hardwood pulp, softwood pulp or a mixture thereof.

A fibrous product according to any of the preceding claims, characterised in that the back layer comprises 1 to 5 layers (2;

• 4-6) that have been produced from virgin fibre or recycled fibre.

A fibrous product according to any of the preceding claims, characterised in that the grammage of the top layer is at least about 5% by weight, preferably at least 10% by weight, less than the top layer that has been produced from the same fibre material and mineral pigments and that has corresponding opacity and formation.

A process for producing a multi-layer product, according to which process a filler-containing fibre layer, which forms the surface (1;

• 3) of the fibre product and covers the back layer, is fitted on top of a backing layer (2;
• 4-6) that consists of at least of one fibrous layer, characterised in that the top layer (1;
• 3) is formed from slush of fibre material, to which a product comprising cellulose or lignocellulose fibrils, on which light scattering material particles have been precipitated, is added as a filler.