A method of making a cellulosic web includes: forming a nascent web from a papermaking furnish, the nascent web having a generally random distribution of papermaking fiber; b) transferring the web having a generally random distribution of papermaking fiber to a translating transfer surface moving at
A method of making a cellulosic web includes: forming a nascent web from a papermaking furnish, the nascent web having a generally random distribution of papermaking fiber; b) transferring the web having a generally random distribution of papermaking fiber to a translating transfer surface moving at a first speed; drying the web to a consistency of from about 30 to about 60 percent including compactively dewatering the web prior to or concurrently with transfer to the transfer surface; fabric-creping the web from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric with a patterned creping surface, the fabric creping step occurring under pressure in a fabric creping nip defined between the transfer surface and the creping fabric wherein the fabric is traveling at a second speed slower than the speed of said transfer surface, the fabric pattern, nip parameters, velocity delta and web consistency being selected such that the web is creped from the transfer surface and redistributed on the creping fabric such that the web has a plurality of fiber-enriched regions arranged in a pattern corresponding to the patterned creping surface of the fabric, optionally drying the wet web while it is held in the creping fabric. Preferably, the formed web is characterized in that its void volume increases upon drawing.
대표청구항▼
What is claimed is: 1. An absorbent fabric-creped cellulosic web comprising a plurality of fiber-enriched regions of relatively high local basis weight interconnected by a plurality of lower local basis weight regions, characterized in that drawing the web increases its void volume by at least abou
What is claimed is: 1. An absorbent fabric-creped cellulosic web comprising a plurality of fiber-enriched regions of relatively high local basis weight interconnected by a plurality of lower local basis weight regions, characterized in that drawing the web increases its void volume by at least about 5%, wherein the web exhibits absorbency suitable for use in tissue and towel products. 2. The absorbent cellulosic sheet according to claim 1, characterized in that the web is capable of an increase in void volume of up to about 25% upon drawing. 3. The absorbent cellulosic sheet according to claim 1, characterized in that the web is capable of an increase in void volume of up to about 35% upon drawing. 4. The absorbent cellulosic sheet according to claim 1, characterized in that the web is capable of an increase in void volume of up to about 50% upon drawing. 5. The absorbent cellulosic web according to claim 1, characterized in that drawing the web by 30% increases the void volume by at least about 5%. 6. The absorbent cellulosic web according to claim 1, characterized in that dry-drawing the web by 45% increases the void volume by at least about 20%. 7. An absorbent fabric-creped cellulosic web comprising a plurality of fiber-enriched regions of relatively high local basis weight interconnected by a plurality of lower local basis weight regions, characterized in that drawing the web increases the bulk thereof by at least about 5%, wherein the web exhibits absorbency suitable for use in tissue and towel products. 8. The absorbent cellulosic web according to claim 7, characterized in that drawing the web by 30% increases the bulk thereof by at least about 5%. 9. The absorbent cellulosic web according to claim 7, characterized in that drawing the web by 45% increases the bulk thereof by at least about 10%. 10. An absorbent fabric-creped cellulosic web comprising a plurality of fiber-enriched regions of relatively high local basis weight interconnected by a plurality of lower local basis weight regions, characterized in that drawing the web is effective to decrease the sidedness and increases the bulk thereof by at least about 5%, wherein the web exhibits absorbency suitable for use in tissue and towel products. 11. An absorbent fabric-creped cellulosic web comprising a plurality of fiber-enriched regions of relatively high local basis weight interconnected by a plurality of lower local basis weight regions, characterized in that drawing the web preferentially attenuates the fiber-enriched regions of the web and increases the bulk thereof by at least about 5%, wherein the web exhibits absorbency suitable for use in tissue and towel products. 12. The absorbent cellulosic web according to claim 11, wherein the web incorporates secondary fiber. 13. The absorbent cellulosic web according to claim 12, wherein the web is over 50% by weight secondary fiber. 14. An absorbent fabric-creped cellulosic web comprising a plurality of fiber-enriched regions of relatively high local basis weight interconnected by a plurality of lower local basis weight regions, characterized in that caliper of the web decreases more slowly than basis weight upon drawing the web and drawing the web increases the bulk thereof by at least about 5%, wherein the web exhibits absorbency suitable for use in tissue and towel products. 15. The absorbent cellulosic web according to claim 14, wherein the ratio of percent decrease in caliper/percent decrease in basis weight of the web is less than about 0.85 upon drawing the web. 16. The absorbent cellulosic web according to claim 14, wherein the ratio of percent decrease in caliper/percent decrease in basis weight of the web is less than about 0.7 upon drawing the web. 17. The absorbent cellulosic web according to claim 14, wherein the ratio of percent decrease in caliper/percent decrease in basis weight of the web is less than about 0.6 upon drawing the web. 18. The absorbent cellulosic web according to claim 14, wherein the web comprises secondary fiber. 19. The absorbent cellulosic web according to claim 18, wherein the web includes at least 50% by weight secondary fiber. 20. The absorbent cellulosic web according to claim 14, wherein the web has a basis weight of from about 5 to about 30 lbs per 3000 square feet ream. 21. A fabric-creped absorbent cellulosic web with a drawn reticulum having a plurality of interconnected regions of different local basis weights including at least (i) a plurality of fiber-enriched regions of high local basis weight interconnected by way of (ii) a plurality of lower local basis weight linking regions, characterized in that: (a) the web has a recovered crepe of at least about 10%; and (b) drawing the web increases the bulk thereof by at least about 5%, wherein the web exhibits absorbency suitable for use in tissue and towel products. 22. The creped absorbent cellulosic web with a drawn reticulum having a plurality of interconnected regions of different local basis weights including at least (i) a plurality of fiber-enriched regions of high local basis weight interconnected by way of (ii) a plurality of lower local basis weight linking region according to claim 21, characterized in that the web has a recovered crepe of at least about 25%. 23. The creped absorbent cellulosic web with a drawn reticulum having a plurality of interconnected regions of different local basis weights including at least (i) a plurality of fiber-enriched regions of high local basis weight interconnected by way of (ii) a plurality of lower local basis weight linking region according to claim 21, characterized in that the web has a recovered crepe of at least about 50%. 24. The creped absorbent cellulosic web with a drawn reticulum having a plurality of interconnected regions of different local basis weights including at least (i) a plurality of fiber-enriched regions of high local basis weight interconnected by way of (ii) a plurality of lower local basis weight linking region according to claim 21, characterized in that the web has a recovered crepe of at least about 100%. 25. An absorbent fabric-creped cellulosic web with an expandable reticulum of fiber enriched, relatively high basis weight regions interconnected by way of lower basis weight linking regions, characterized in that the void volume of the web may be increased by expanding the fiber enriched regions and drawing the web increases the bulk thereof by at least about 5%, wherein the web exhibits absorbency suitable for use in tissue and towel products. 26. The absorbent cellulosic web according to claim 25, wherein the fiber enriched regions have fiber bias in the CD and the linking regions have fiber bias along a direction between fiber enriched regions. 27. The absorbent cellulosic web according to claim 25, wherein the fiber enriched regions are provided with a plurality of microfolds with fold lines transverse to the machine direction. 28. The absorbent cellulosic web according to claim 25, wherein the dried web is expanded to increase its void volume by at least about 1 g/g. 29. The absorbent cellulosic web according to claim 25, wherein the dried web is expanded to increase its void volume by at least about 2 g/g. 30. The absorbent cellulosic web according to claim 25, wherein the dried web is expanded to increase its void volume by at least about 3 g/g.
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이 특허에 인용된 특허 (96)
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