Security paper, opaque authenticatable by tear, tickets to be scraped realized on the basis of the paper and its method of manufacturing

摘要

The present invention relates to the fibrous supports of writing and / or printing, safety (e.g. paper). br / in particular, the invention relates to a security paper, opaque authenticatable by tearing, not delaminatable, tamper-proof, economical and printable, characterized in that it is constituted by a single fibrous mat, homogeneous, in particular, in its thickness and obtained from a single fibrous ply, and in that it comprises, in its thickness, at least one section (2) substantially median of color (c2) and at least one section (3, 4), the external white or colored (c1, c3) different and / or less than that (c2) of the median section (2). br / preferably, c1 and c3 = c2 decolorized and c2 = dark color. & br / the invention also relates to a process for the production of the paper and the articles produced from the paper (e.g. game ticket to be scratched .par. / p)