Patent ID: 6699360
Filing Date: 2004-03-02
Classification: B31F,D21H,Y10S,Y10T

Abstract:
A process for the manufacture of a soft, printed, single-ply bathroom tissue product having a basis weight of at least about 12.5 lbs./3000 square foot ream and having a Yankee side and an air side and having low sidedness which process comprises:providing a moving foraminous support; providing a headbox adjacent said moving foraminous support adapted to form a nascent web by depositing furnish upon said moving foraminous support; providing wet pressing means operatively connected to said moving foraminous support to receive said nascent web and for dewatering of said nascent web by overall compaction thereof; providing a Yankee dryer operatively connected to said wet pressing means and adapted to receive and dry the dewatered nascent web; supplying a furnish to said headbox comprising cellulosic papermaking fiber chosen from the group consisting hardwood, softwood, and recycled fibers, and cationic aldehyde-containing cationic temporary wet strength agents and nitrogenous softener/debonder; controlling the overall concentration of the aldehyde-containing cationic temporary wet strength agent and the cationic nitrogenous softener/debonder in said nascent web to between about 1 to about 20 lbs./ton on a dry fiber basis, the weight ratio of the wet strength agent to the softener debonder being controlled to be within the range of about 0.5 to about 10.0; wet pressing said nascent web; transferring said nascent web to said Yankee dryer, adhering said web to said Yankee, and creping said web from said Yankee; recovering a creped, dried, absorbent, single-ply bathroom tissue product having a Yankee side and an air side; and printing such absorbent bathroom tissue product on the Yankee side, the air side or both sides and recovering a printed, single-ply, absorbent bathroom tissue product and forming a roll of printed, single-ply bathroom tissue.