Invention Grant
US08968516B2 Methods of making a belt-creped absorbent cellulosic sheet prepared with a perforated polymeric belt 有权
制造带有起皱的吸收性纤维素片材的方法,其用穿孔聚合物带制备

Methods of making a belt-creped absorbent cellulosic sheet prepared with a perforated polymeric belt
Abstract:
A method of making a belt-creped absorbent cellulosic sheet that has an upper surface and a lower surface. A papermaking furnish is compactively dewatered to form a dewatered web having an apparently random distribution of papermaking fiber orientation. The dewatered web is applied to a translating transfer surface. The web is belt creped from the transfer surface at a consistency of from about 30% to about 60% utilizing a generally planar polymeric creping belt having a plurality of perforations. The belt-creping step occurs under pressure in a belt creping nip defined between the transfer surface and the creping belt. The belt is traveling at a belt speed that is slower than the speed of the transfer surface, and the web is creped from the transfer surface and redistributed on the creping belt to form a web.
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