Patent ID: 7261789
Filing Date: 2007-08-28
Classification: B31F,B32B,Y10T

Abstract:
1. A method for producing a printable paperboard product comprising at least three layers, in which method paperboard raw material webs forming the layers of the product are bonded to each other by gluing, characterized in that at least one of the webs is worked mechanically in a dry state, when the moisture content of the web is not greater than 12%, by embossing thereon a raised pattern so as to deform the web surface in a permanent manner, at least two of the webs are planar unworked webs, glue is applied between adjacent webs, and the unworked webs are bonded to the at least one embossed web after the application of the glue in a bonding and calibration nip, wherein the webs are pressed against each other so as to calibrate the thickness of the bonded webs and provide the printable paperboard product having an even thickness.