Process for the production of paper or paperboard

Details Process for the production of paper or paperboard Process for the production of paper or paperboard

D - Textiles, Paper

21

F

D21F 1/02 (2006.01) B32B 29/04 (2006.01) D21F 11/04 (2006.01) D21H 27/30 (2006.01) D21H 27/32 (2006.01)

Patent

CA 2749652

The present invention relates to a process for producing a paper or paperboard product which process comprises the steps of providing a first headbox with a furnish comprising fibres, which furnish forms at least one layer of the paper or pa-perboard product, providing the headbox with a non- fibrous high consistency composition, which composition forms at least one additional layer of the paper or paperboard product and conducting the layers onto a wire forming a multilayer web which is fur-ther dewatered and dried forming the paper or paperboard product. The invention further relates to a paper or paperboard pro-duced according to the process and a headbox used in the process.

L'invention concerne un processus pour la production d'un produit de papier ou de carton lequel processus comprend les étapes de fourniture d'une première caisse de tête avec une pâte contenant des fibres, laquelle pâte forme au moins une couche du produit de papier ou de carton ; d'alimentation de la caisse de tête avec une composition non fibreuse de consistance élevée, laquelle composition forme au moins une couche additionnelle du produit de papier ou de carton ; et d'entraînement des couches sur un treillis formant une toile multicouche qui est en outre épaissie et séchée pour former le produit de papier ou de carton. L'invention concerne de plus un papier ou un carton produit formé selon le processus et une caisse de tête utilisée dans le processus.

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