Low density paperboard

Details Low density paperboard Low density paperboard

D - Textiles, Paper

21

H

D21H 11/04 (2006.01) D21H 17/63 (2006.01) D21H 17/67 (2006.01) D21H 19/20 (2006.01) D21H 19/36 (2006.01) D21H 19/54 (2006.01)

Patent

CA 2725849

A paperboard including a solid bleached sulfate paperboard substrate and a coating applied to the paperboard substrate to form a coated structure, the coated structure having a basis weight, a caliper thickness and a Parker Print Surf smoothness, the Parker Print Surf smoothness being at most about 3 microns, the basis weight being at most about Y1 pounds per 3000 ft2, wherein Y1 is a function of the caliper thickness (X) in points and is calculated as follows: Y1 = 3.79 + 13.43X - 0.1638X2.

L'invention porte sur un carton comprenant un substrat de carton plein blanchi au sulfate et un revêtement appliqué sur le substrat de carton de façon à former une structure revêtue, la structure revêtue ayant un poids de base, une épaisseur calibrée et un lissé de surface Parker Print Surf, le lissé de surface Parker Print Surf étant au plus d'environ 3 microns, le poids de base étant au plus d'environ Y1 livres pour 3 000 pieds2, Y1 étant fonction de l'épaisseur calibrée (X) en points et étant calculé comme suit : Y1 = 3,79 + 13,43X 0,1638X2.

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