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    • 4. 发明公开
    • A PROCESS FOR INCLUDING A FINE PARTICULATE FILLER INTO TISSUE PAPER USING AN ANIONIC POLYELECTROLYTE
    • 法成卫生纸在使用中的阴离子聚电解质精细,粒状填料包埋
    • EP0891444A1
    • 1999-01-20
    • EP97920329.0
    • 1997-04-03
    • THE PROCTER & GAMBLE COMPANY
    • VINSON, Kenneth, DouglasDEASON, Howard, Thomas
    • D21H17D21F11D21H23D21H27D21H21
    • D21F11/14D21H17/29D21H17/375D21H17/43D21H17/68D21H17/69D21H21/52D21H23/04D21H27/38
    • A process for incorporating a fine non-cellulosic particulate filler into a creped tissue paper comprises the steps of: a) contacting an aqueous dispersion of a non-cellulosic particulate filler (34) with an aqueous dispersion of an anionic polyelectrolyte polymer (35); b) mixing the aqueous dispersion of polymer-contacted filler (38) with papermaking fibers forming an aqueous papermaking furnish (41) comprising polymer-contacted filler and papermaking fibers; c) contacting said aqueous papermaking furnish (41) with a cationic retention aid (46); d) forming an embryonic paper web (88) from the aqueous papermaking furnish (45) on foraminous papermaking clothing (85); e) removing water from said embryonic web (88) to form a semi-dry papermaking web; f) adhering the semi-dry papermaking web to a Yankee dryer (108) and drying said web to a substantially dry condition; g) creping the substantially dry web from the Yankee dryer by means of a flexible creping blade (111), thereby forming a creped tissue paper (70). When providing at least one additional papermaking furnish (31, 33) and directing said papermaking furnishes (31, 33; 45) onto foraminous papermaking clothing (85), thereby forming an embryonic multi-layered paper web (88) from the filler-containing aqueous papermaking furnish and the additional parpermaking furnish in a manner to create a multi-layered paper web wherein at least one layer (88b, 88c) is formed from the filler-containing aqueous papermaking furnish and at least one layer (88a) is formed from said additional papermaking furnish, a multi-layered creped tissue paper (70) can be formed. The process results in strong, soft, and low dusting tissue paper webs useful in the manufacture of soft, absorbent sanitary products such as bath tissue, facial tissue, and absorbent towels.