| 摘要 |
<p>1. Papermaking product comprising two layers based upon cellulosic fibres, a support layer and a covering layer : - the support layer comprises unbleached and/or bleached, recycled or not recycled cellulosic fibres, - the covering layer comprises mineral fillers which impart to it a white pigmentation, in a proportion of from 25 to 50% by weight of dry material in the layer, the remainder being white, long and short cellulosic fibres, with 25% at least by weight of long fibres of a length exceeding 4 mm, - the covering layer has a weight per unit area of from 25 g/m**2 to 70 g/m**2 , - the support layer has a weight per unit area such that the papermaking product has a total weight per unit area of from 120 g/m**2 to 300 g/m**2 , - the covering layer has a degree of whiteness, determined in accordance with the standard NFQ 03.039, of at least 70, - the covering layer has a suitability for flexographic printing determined by measuring optical density by means of a MACBETH RD 914 densitometer on a product printed in blue with a strong screening greater than 0.5.</p> |
