Patent ID: 6680102
Filing Date: 2004-01-20
Classification: B31F,D21H,Y10T

Abstract:
An engraving cylinder for embossing a sheet, said sheet comprising at least one paper ply of a specific surface weight between 12 and 30 g/m2; and said at least one ply comprising an embossing pattern having a first series of substantially truncated protrusions projecting from a first side of the at least one ply and constituting alignments, a second series of protrusions where each protrusion of said second series of protrusions is of a shape of a low wall projecting from said first side and having a height (H2) which is less than a height (H1) of the protrusions of the first series, and wherein each protrusion of the second series bridges two adjacent protrusions of said first series along said alignments in a manner to enhance visual perception of the embossing pattern, and wherein said cylinder comprises a first series of embossing tips of substantially truncated shape, of said height H1, and constituting said alignments to provide said first series of protrusions; and a second series of embossing tips having said height H2 and said shape of a low wall and which bridges two adjacent embossing tips of the first series.