Patent ID: 9643376
Date: 2017-05-09
CPC Classifications: A47K,B31F,B32B,D21H,Y10T

Claim:
1. A process for manufacturing multi-ply water-disintegratable absorbent sheets, each said sheet comprising a plurality of plies, a mean thickness of a ply of the sheet being greater than 0.115 mm, a basis weight of said sheet being greater than 0.070 kg/m 2 , and a total product thickness exceeds 0.75 mm, the process comprising the steps of: embossing a first ply with a first embossing zone having a first embossing cylinder to create a first embossed ply, the first embossed ply being embossed with a decorative pattern; embossing a second ply with a second embossing zone having a second embossing cylinder to create a second embossed ply, the second embossed ply being coarsely micro-embossed having approximately 25 protrusions per cm embossing a third ply with a third embossing zone having a third embossing cylinder to create a third embossed ply, the third embossed ply being microembossed having at least 30 protrusions per cm applying an adhesive to a first surface of the second embossed ply using an adhesive coating unit, the adhesive being applied to the first surface of the second embossed ply when a second surface of the second embossed ply that is opposed to the first surface is pressed against the first embossed ply such that the adhesive passes from the first surface of the second embossed ply to reach the second surface of the second embossed ply and a surface of the first embossed ply; and associating the assembled first and second embossed plies with the third embossed ply by using a marrying cylinder that pressures the first surface of the second ply against the third ply on the first embossing cylinder with a pressure in a range of 3 kg/mm wherein at least one of the first ply, the second ply, or the third ply includes two or more plies so that a total number of plies is between 5 to 9 plies, and the multi-ply absorbent sheets have a flexibility between 1.5 N and 3.1 N.