Coating

Details Coating Coating

B - Operations, Transporting

32

B

B32B 3/26 (2006.01) D06N 3/00 (2006.01) D21H 19/70 (2006.01)

Patent

CA 2214859

A coated fibrous substrate is produced by applying a coating (16) containing swelled super absorbent particles (12) having a minimum dimension of at least 5 microns to obtain the desired porosity and roughness in the finished coating, applying the coating to the substrate at least partially setting the coating (18) thereafter driving of (20) at least the majority of the carrier absorbed by the super absorbent particles (12) from the particles (12) to leave macro-voids in the coating and produce a coated surface having a roughness in the macro as opposed to the micro range.

Nouveau substrat fibreux enrobé obtenu: par application d'un revêtement (16) contenant des particules superabsorbantes (12) expansées d'une dimension minimale moyenne d'au moins 5 microns afin d'obtenir sur le substrat une couche finie présentant les caractéristiques de porosité et de rugosité voulues; par durcissement subséquent au moins partiel du revêtement (16); par élimination (20) au moins de la plus grande partie du support absorbé par les particules superabsorbantes (12) de manière à laisser des macro-vides dans le revêtement et à former une surface enrobée présentant une rugosité de l'ordre du macro et non du micro.

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