Belt-creped, variable local basis weight absorbent sheet prepared with perforated polymeric belt
AssigneeGeorgia-Pacific Consumer Products LP
InventorsGuy H. Super, Paul J. Ruthven, Stephen J. McCullough, Daniel H. Sze, Greg A. Wendt, Joseph H. Miller
Life of this patent
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Abstract
An absorbent sheet of cellulosic fibers with upper and lower sides includes (i) a plurality of fiber-enriched hollow domed regions on the upper side of the sheet having a relatively high local basis weight, (ii) connecting regions of relatively lower local basis weight forming a network interconnecting the relatively high local basis weight domed regions of the sheet, and (iii) transition areas with upwardly and inwardly inflected consolidated fibrous regions transitioning from the connecting regions into the domed regions.
Claims32
An absorbent sheet of cellulosic fibers that has an upper side and a lower side, the absorbent sheet comprising:
- (i) a plurality of fiber-enriched hollow domed regions projecting from the upper side of the sheet, the hollow domed regions having sidewalls and a local basis weight that is higher than a mean basis weight of the sheet;
- (ii) connecting regions forming a network interconnecting the hollow domed regions of the sheet, the connecting regions having a local basis weight that is lower than the local basis weight of the hollow domed regions;
- and
- (iii) transition areas with consolidated fibrous regions that transition from the connecting regions into the hollow domed regions, by extending upwardly and inwardly from the connecting regions into the sidewalls of the hollow domed regions.
An absorbent cellulosic sheet that has an upper surface and a lower surface, the absorbent sheet comprising:
- (i) a plurality of fiber-enriched hollow domed regions protruding from the upper surface of the sheet, the hollow domed regions having sidewalls of a local basis weight that is higher than a mean basis weight of the sheet and being formed along at least a leading edge thereof;
- (ii) connecting regions forming a network interconnecting the fiber-enriched hollow domed regions of the sheet, the connecting regions having a local basis weight that is lower than the local basis weight of the sidewalls;
- and
- (iii) transition areas comprising consolidated groupings of fibers that extend upwardly from the connecting regions into the sidewalls of the fiber-enriched hollow domed regions along at least the leading edge thereof.
An absorbent sheet of cellulosic fibers, the absorbent sheet comprising:
- (i) a plurality of fiber-enriched regions of a local basis weight higher than a mean basis weight of the sheet and including (A) hollow domed portions and (B) pileated fiber-enriched portions with a cross machine direction (CD) fiber orientation bias adjacent to the hollow domed portions, the fiber-enriched portions being interconnected with
- (ii) connecting regions of a local basis weight that is lower than the local basis weight of the fiber-enriched regions,
- wherein the hollow domed portions have upwardly projecting densified sidewalls, at least a portion of each upwardly projecting densified sidewall comprising a densified region that extends inwardly.
An absorbent sheet of cellulosic fibers that has an upper side and a lower side, the absorbent sheet comprising:
- (i) a plurality of fiber-enriched hollow domed regions having densified caps, the fiber-enriched hollow domed regions projecting from the upper side of the sheet and having sidewalls with a local basis weight that is higher than a mean basis weight of the sheet;
- (ii) connecting regions forming a network interconnecting the hollow domed regions of the sheet, the connecting regions having a local basis weight that is lower than the local basis weight of the hollow domed regions;
- and
- (iii) transition areas that transition from the connecting regions into the hollow domed regions by extending upwardly and inwardly from the connecting regions into the sidewalls of the hollow domed regions.
Dependencies are inferred from the claim text.