Neue adhesive Zusammensetzungen zum Kreppen, Verfahren zum Kreppen und gekrepptes fibröses Gewebe

摘要

Disclosed are adhesive formulations as creping process aids for producing an absorbent creped cellulosic sheet having a high level of surface-perceived softness said formulations comprising an organic polymer selected from polymers having at least one primary or secondary amine group in the backbone, in combination with crosslinking agents selected from dialdehydes or zirconium compounds having a valence of plus four. The zirconium crosslinking agent is advantageously applied directly and separately on the dryer surface at the time the base polymer is applied. Alternatively, when using dialdehydes, the dialdehydes are advantageously mixed with the base polymer just prior to application to the dryer surface without having the crosslinking reaction take place with the base polymer prior to reaching the heated Yankee surface. The sheets are useful in the manufacture of tissue and towel.