Process of manufacture for a coloured fibre material,...

D - Textiles – Paper – 21 – H

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D21H 23/02 (2006.01) D21H 21/28 (2006.01) D21H 23/04 (2006.01)

Patent

CA 2207998

Process for the manufacture of a coloured fibre material, containing a certain proportion of cellulose fibres, such as paper and nonwoven. A dyestuff is applied onto reel or sheet pulp either on the whole material or only on part of it, whereupon the reel or sheet pulp is defibrated and dispersed in liquid or foam possibly together with other fibres. The fibre dispersion is thereafter applied onto a wire and dewatered, whereupon the formed fibre web, which contains a substantially even addition of coloured fibres, is subjected to possible further treatment steps before drying and reeling. A fibre material manufactured according to the process is also disclosed. If only part of the pulp fibres are coloured, a mottled colour impression of the material is obtained.

Procédé de fabrication d'un matériau fibreux coloré, tel que du papier ou un non tissé, comportant une certaine proportion de fibres de cellulose. Un colorant est appliqué sur la pâte en rouleau ou en feuilles, sur la totalité ou une partie du matériau, puis la pâte en rouleau ou en feuille est défibrée et dispersée dans un liquide ou dans de la mousse, éventuellement avec d'autres fibres. La dispersion de fibres est ensuite appliquée sur une toile puis égouttée. La nappe de fibres formée, qui contient une adjonction régulière de fibres de couleur, peut être soumise à d'éventuelles étapes ultérieures de traitement avant séchage et bobinage. L'invention porte également sur le matériau fibreux produit selon ce procédé. Si les fibres de la pâte ne sont colorées qu'en partie, le matériau présente une couleur tachetée.

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