Method of making a belt-creped absorbent cellulosic sheet
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B31F-001/16
B31F-001/12
D21H-025/04
출원번호
US-0402153
(2012-02-22)
등록번호
US-8524040
(2013-09-03)
발명자
/ 주소
Edwards, Steven L.
Super, Guy H.
McCullough, Stephen J.
Reeb, Ronald R.
Chou, Hung Liang
Yeh, Kang Chang
Dwiggins, John H.
Harper, Frank D.
출원인 / 주소
Georgia-Pacific Consumer Products LP
대리인 / 주소
Bozek, Laura L.
인용정보
피인용 횟수 :
5인용 특허 :
274
초록▼
A method of making a belt-creped absorbent cellulosic sheet includes compactively dewatering a papermaking furnish to form a nascent web having an apparently random distribution of papermaking fiber orientation, applying the nascent web having the apparently random distribution of fiber orientation
A method of making a belt-creped absorbent cellulosic sheet includes compactively dewatering a papermaking furnish to form a nascent web having an apparently random distribution of papermaking fiber orientation, applying the nascent web having the apparently random distribution of fiber orientation to a translating transfer surface that is moving at a transfer surface speed, belt-creping the web from the transfer surface at a consistency of from about 30% to about 60% utilizing a patterned creping belt, the belt-creping step occurring under pressure in a belt creping nip defined between the transfer surface and the creping belt, the web being creped from the transfer surface and redistributed on the creping belt to form a web with a reticulum having a plurality of interconnected regions of different local basis weights.
대표청구항▼
1. A method of making a belt-creped absorbent cellulosic sheet, the method comprising: (a) compactively dewatering a papermaking furnish to form a nascent web having an apparently random distribution of papermaking fiber orientation;(b) applying the nascent web having the apparently random distribut
1. A method of making a belt-creped absorbent cellulosic sheet, the method comprising: (a) compactively dewatering a papermaking furnish to form a nascent web having an apparently random distribution of papermaking fiber orientation;(b) applying the nascent web having the apparently random distribution of fiber orientation to a translating transfer surface that is moving at a transfer surface speed;(c) belt-creping the web from the transfer surface at a consistency of from about 30% to about 60% utilizing a patterned creping belt, the belt-creping step occurring under pressure in a belt creping nip defined between the transfer surface and the creping belt, wherein the belt is traveling at a belt speed that is slower than the transfer surface speed, the web being creped from the transfer surface and redistributed on the creping belt to form a web with a reticulum having a plurality of interconnected regions of different local basis weights including at least (i) a plurality of fiber-enriched pileated regions of a local basis weight that is higher than an average basis weight of the web, the fiber-enriched pileated regions generally extending in the cross machine direction (CD) of the web, and interconnected by way of (ii) a plurality of elongated densified regions of compressed papermaking fibers, the elongated densified regions having a local basis weight that is lower than the local basis weight of the fiber-enriched pileated regions, and being generally oriented along the machine direction (MD) of the web; and(d) drying the web to produce a belt-creped absorbent cellulosic sheet. 2. The method according to claim 1, wherein the characteristic local basis weight of representative areas within the fiber-enriched pileated regions is at least 35% higher than the characteristic local basis weight of representative areas within the elongated densified regions. 3. The method according to claim 1, wherein the characteristic local basis weight of representative areas within the fiber-enriched pileated regions is at least 50% higher than the characteristic local basis weight of representative areas within the elongated densified regions. 4. The method according to claim 1, wherein the characteristic local basis weight of representative areas within the fiber-enriched pileated regions is at least 75% higher than the characteristic local basis weight of representative areas within the elongated densified regions. 5. The method according to claim 1, wherein the characteristic local basis weight of representative areas within the fiber-enriched pileated regions is at least 100% higher than the characteristic local basis weight of representative areas within the elongated densified regions. 6. The method according to claim 1, wherein the characteristic local basis weight of representative areas within the fiber-enriched pileated regions is at least 150% higher than the characteristic local basis weight of representative areas within the elongated densified regions. 7. The method according to claim 1, wherein the characteristic local basis weight of representative areas within the fiber-enriched pileated regions is from 25% to 200% higher than the characteristic local basis weight of representative areas within the elongated densified regions. 8. The method according to claim 1, wherein the fiber-enriched pileated regions extend in the cross-machine direction (CD) a distance of from about 0.25 to about 3 times a distance that the elongated densified regions extend in the machine direction (MD). 9. The method according to claim 8, wherein the fiber-enriched regions are pileated regions having a plurality of macrofolds. 10. The method according to claim 8, wherein the elongated densified regions have a machine direction to cross-machine direction (MD/CD) aspect ratio of greater than two. 11. The method according to claim 8, wherein the elongated densified regions have a machine direction to cross-machine direction (MD/CD) aspect ratio of greater than three. 12. The method according to claim 8, wherein the elongated densified regions have a machine direction to cross-machine direction (MD/CD) aspect ratio of between about two and about six. 13. The method according to claim 1, wherein the creping belt is a creping fabric. 14. The method according to claim 13, further comprising applying suction to the creped web while the creped web is disposed in the creping fabric. 15. The method according to claim 1, wherein the creping belt is a woven creping fabric with prominent MD warp knuckles that project into the creping nip to a greater extent than weft knuckles of the fabric. 16. The method according to claim 15, wherein the creping fabric is a multilayer fabric. 17. The method according to claim 1, wherein the pileated regions include drawable macrofolds. 18. The method according to claim 17, further comprising a step of drawing the macrofolds by drawing the web along the MD of the sheet. 19. The method according to claim 1, wherein the pileated regions include drawable macrofolds and nested therein drawable microfolds. 20. The method according to claim 19, further comprising a step of drawing the microfolds of the pileated regions by application of suction. 21. The method according to claim 1, wherein the pileated regions include a plurality of overlapping crests inclined with respect to the MD of the sheet. 22. The method according to claim 1, wherein the sheet has a basis weight of from 8 lbs per 3000 square-foot ream to 35 lbs per 3000 square-foot ream and a void volume greater than 7 grams/gram. 23. The method according to claim 1, wherein the sheet has a void volume of at least 7 grams/gram and up to 15 grams/gram. 24. The method according to claim 1, wherein the sheet has a void volume of at least 8 grams/gram and up to 12 grams/gram. 25. The method according to claim 1, wherein the sheet has a basis weight of from 20 lbs per 3000 square-foot ream to 35 lbs per 3000 square-foot ream and a void volume greater than 7 grams/gram. 26. The method according to claim 1, wherein the sheet has a cross-machine direction (CD) stretch of greater than 5%, up to about 10%. 27. The method according to claim 1, wherein the sheet has a cross-machine direction (CD) stretch of greater than 5%. 28. The method according to claim 1, wherein the sheet has a cross-machine direction (CD) stretch of greater than 7%. 29. The method according to claim 1, wherein the sheet has a cross-machine direction (CD) stretch of greater than 8%. 30. A method of making a fabric-creped absorbent cellulosic sheet with improved dispensing characteristics, the method comprising: (a) compactively dewatering a papermaking furnish to form a nascent web;(b) applying the nascent web to a translating transfer surface that is moving at a transfer surface speed;(c) fabric-creping the web from the transfer surface at a consistency of from about 30% to about 60% utilizing a patterned creping fabric, 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 belt speed that is slower than the transfer surface speed, the web being creped from the transfer surface and transferred to the creping fabric to form a web with a reticulum having a plurality of interconnected regions of different local basis weights including at least (i) a plurality of cross machine direction (CD) extending, fiber-enriched pileated regions of a local basis weight that is higher than an average basis weight of the web, the fiber-enriched pileated regions interconnected by way of (ii) a plurality of elongated densified regions of compressed papermaking fibers, the elongated densified regions having a local basis weight that is lower than the local basis weight of the pileated regions, and being generally oriented along the machine direction (MD) of the web;(d) adhering the web to a drying cylinder with a resinous adhesive coating composition;(e) drying the web on the drying cylinder to form a dried web; and(f) peeling the dried web from the drying cylinder to produce a belt-creped absorbent cellulosic sheet. 31. A method according to claim 30, further comprising selecting the furnish, the creping fabric, and the creping adhesive, and controlling the velocity delta, nip parameters, web consistency, caliper, and basis weight such that the machine direction (MD) bending length of the dried web is at least about 3.5 cm. 32. The method according to claim 30, wherein the machine direction (MD) bending length of the dried web is from about 3.5 cm to about 5 cm. 33. The method according to claim 30, wherein the machine direction (MD) bending length of the dried web is from about 3.75 cm to about 4.5 cm. 34. The method according to claim 30, wherein the fabric-creping step is operated at a fabric crepe of from about 2% to about 20%. 35. The method according to claim 30, wherein the fabric-creping step is operated at a fabric crepe of from about 3% to about 10%. 36. A method of making fabric-creped absorbent cellulosic sheet, the method comprising: (a) compactively dewatering a papermaking furnish to form a nascent web having an apparently random distribution of papermaking fiber orientation;(b) applying the nascent web having the apparently random distribution of fiber orientation to a translating transfer surface that is moving at a transfer surface speed;(c) fabric-creping the web from the transfer surface at a consistency of from about 30% to about 60% utilizing a patterned creping fabric, 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 belt speed that is slower than the transfer surface speed, the web being creped from the transfer surface and redistributed on the creping fabric to form a web with a drawable reticulum having a plurality of interconnected regions of different local basis weights including at least (i) a plurality of fiber-enriched regions of a local basis weight that is higher than an average basis weight of the web, the fiber-enriched regions generally extending in the cross machine direction (CD) of the web, and interconnected by way of (ii) a plurality of elongated densified regions of compressed papermaking fibers, the elongated densified regions having a local basis weight that is lower than the local basis weight of the fiber-enriched regions, and being generally oriented along the machine direction (MD) of the web;(d) drying the web to form a dried web; and(e) thereafter, drawing the dried web along its MD, to produce a belt-creped absorbent cellulosic sheet. 37. The according to claim 36, wherein the drawing step comprises drawing the dried web along its MD at least about 10% after the fabric-creping step. 38. The method according to claim 36, wherein the drawing step comprises drawing the dried web along its MD at least about 15% after the fabric-creping step. 39. The method of according to claim 36, wherein the drawing step comprises drawing the dried web along its MD at least about 30% after the fabric-creping step. 40. The method according to claim 36, wherein the drawing step comprises drawing the dried web along its MD at least about 45% after the fabric-creping step. 41. The method according to claim 36, wherein the drawing step comprises drawing the dried web along its MD up to about 75% after the fabric-creping step. 42. The method according to claim 36, wherein the fabric-creping step and the drying step are operated at a Fabric Crepe/Reel Crepe ratio of from about 2 to about 10. 43. The method according to claim 36, wherein the fabric-creping step and the drying step are operated at a Fabric Crepe/Reel Crepe ratio of from about 2.5 to about 5. 44. A method of making fabric-creped absorbent cellulosic sheet, the method comprising: (a) compactively dewatering a papermaking furnish to form a nascent web having an apparently random distribution of papermaking fiber orientation;(b) applying the nascent web having the apparently random distribution of fiber orientation to a translating transfer surface that is moving at a first transfer surface speed;(c) fabric-creping the web from the transfer surface at a consistency of from about 30% to about 60% utilizing a patterned creping fabric, the fabric-creping step occurring under pressure in a fabric creping nip defined between the transfer surface and the creping fabric, wherein the creping fabric is traveling at a belt speed that is slower than the transfer surface speed;(d) applying the web to a Yankee dryer;(e) creping the web from the Yankee dryer;(f) winding the web on a reel to produce a belt-creped absorbent cellulosic sheet; and(g) selecting the pattern of the fabric, nip parameters, velocity delta, web consistency, and web composition such that the web is creped from the transfer surface and redistributed on the creping fabric to form a web having a local basis weight variation that includes at least (i) a plurality of fiber-enriched regions of a local basis weight that is higher than an average basis weight of the sheet, the fiber-enriched regions generally extending in the cross machine direction (CD) of the sheet and (ii) a plurality of elongated regions having a local basis weight that is lower than the local basis weight of the fiber-enriched regions, and being generally oriented along the machine direction (MD) of the sheet. 45. The method according to claim 44, wherein the method exhibits a Caliper Gain/% Reel Crepe ratio of at least 2. 46. The method according to claim 44, wherein the method exhibits a Caliper Gain/% Reel Crepe ratio of at least 2.5. 47. The method according to claim 44, wherein the method exhibits a Caliper Gain/% Reel Crepe ratio of at least 3. 48. The method according to claim 44, wherein the method exhibits a Caliper Gain/% Reel Crepe ratio of from about 1.5 to about 5. 49. The method according to claim 44, wherein the method is operated at a Fabric Crepe/Reel Crepe ratio of from about 1 to about 20.
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이 특허에 인용된 특허 (274)
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Krzysik Duane G. (1112 E. Melrose Ave. Appleton WI 54911) Farrington ; Jr. Theodore E. (2121 Twin Willows Dr. Appleton WI 54915) Garvey Lee P. (113 Florida Ave. Little Chute WI 54140) Henderson Cynth, Soft treated uncreped throughdried tissue.
Krzysik Duane G. (Appleton WI) Farrington ; Jr. Theodore E. (Appleton WI) Garvey Lee P. (Little Chute WI) Henderson Cynthia W. (Neenah WI) Sauer Robert D. (Fremont WI) Smith Michael J. (Neenah WI) Tu, Soft treated uncreped throughdried tissue.
Oriaran T. Philips (Appleton WI) Harper Frank D. (Neenah WI) Awofeso Anthony O. (Appleton WI) Neculescu Cristian M. (Neenah WI) Luu Phuong Van (Appleton WI) Kershaw Thomas N. (Neenah WI) Schulz Galyn, Soft-single ply tissue having very low sidedness.
Drach John E. (Cheltenham PA) Evans Robert D. (Warminster PA) Fanelli Joseph J. (Alpharetta GA) O\Lenick ; Jr. Anthony J. (Lilburn GA), Softening and conditioning fibers with imidazolinium compounds.
Hultcrantz, Magnus; Klerelid, Ingvar; Aberg, Bo-Christer; Johnson, Cary P.; Lafond, John J., Structural clothing and method of manufacturing a tissue paper web.
Espy Herbert H. (Wilmington DE) Maslanka William W. (Landenberg PA), Synthesis of creping aids based on polyamides containing methyl bis(3-aminopropylamine).
Lindsay, Jeffrey Dean; Larson, Kenneth Curtis; Goerg, Charles Herbert; McFarland, Timothy Maurice; Hermans, Michael Alan; Beuther, Paul Douglas; Shannon, Thomas Gerard, Systems for tissue dried with metal bands.
Bjorkquist David W. (Wyoming OH), Temporary wet strength resins with nitrogen heterocyclic nonnucleophilic functionalities and paper products containing s.
Bjorkquist David W. (Wyoming OH), Temporary wet strength resins with nitrogen heterocyclic nonnucleophilic functionalities and paper products containing s.
Lindsay, Jeffrey Dean; Burazin, Mark Alan; Chen, Fung-jou; Hermans, Michael Alan; Lin, Philip Sim; Larson, Kenneth Curtis, Three-dimensional tissue and methods for making the same.
Rasch David M. (Cincinnati OH) Hensler Thomas A. (Cincinnati OH) Daniels Dean J. (Cincinnati OH), Tissue paper having large scale, aesthetically discernible patterns.
Wendt Greg A. (Neenah WI) Underhill Kimberly K. (Appleton WI) Rugowski James S. (Appleton WI) Kressner Bernhardt E. (Appleton WI) Chiu Kai F. (Brandon MS), Tissue webs having a regular pattern of densified areas.
Herman Jeffrey Bruce ; Trumbull John Ghordis ; Wolkowicz Richard Ignatius, Transfer system and process for making a stretchable fibrous web and article produced thereof.
Waldvogel Hartmut (Reutlingen DEX) Borel Georg (Reutlingen DEX), Two layer papermachine embossing fabric with depressions in the upper fabric layer for the production of tissue paper.
Denen, Dennis Joseph; Yardley, Craig D.; Broehl, Joshua Michael; Hayes, Robert James; Knittle, John Joseph; Linstedt, Brian Kenneth; Merz, Gregory James; Moody, John R., Waste minimizing paper dispenser.
Edwards, Steven L.; Wendt, Greg A.; Marinack, Robert J.; Vander Wielen, Michael J.; McCullough, Stephen J.; McDowell, Jeffrey C.; Super, Guy H.; Worry, Gary L., Wet crepe throughdry process for making absorbent sheet and novel fibrous product.
Edwards, Steven L.; Wendt, Greg A.; Marinack, Robert J.; Vander Wielen, Michael J.; McCullough, Stephen J.; McDowell, Jeffrey C.; Super, Guy H.; Worry, Gary L., Wet crepe throughdry process for making absorbent sheet and novel fibrous products.
Edwards, Steven L.; McCullough, Stephen J., Wet-pressed tissue and towel products with elevated CD stretch and low tensile ratios made with a high solids fabric crepe process.
Edwards, Steven L.; McCullough, Stephen J., Wet-pressed tissue and towel products with elevated CD stretch and low tensile ratios made with a high solids fabric crepe process.
Fung-jou Chen ; Mark Alan Burazin ; Michael Alan Hermans ; David Henry Hollenberg ; Richard Joseph Kamps ; Bernhardt Edward Kressner ; Jeffrey Dean Lindsay, Wet-resilient webs and disposable articles made therewith.
Bryan Philip S. (Webster NY) Lambert Patrick M. (Rochester NY) Towers Christine M. (Rochester NY) Jarrold Gregory S. (Henrietta NY), X-ray intensifying screen including a titanium activated hafnium dioxide phosphor containing neodymium to reduce aftergl.
Super, Guy H.; Ruthven, Paul J.; McCullough, Stephen J.; Sze, Daniel H.; Wendt, Greg A.; Miller, Joseph H., Method of making a belt-creped, absorbent cellulosic sheet with a perforated belt.
Super, Guy H.; Ruthven, Paul J.; McCullough, Stephen J.; Sze, Daniel H.; Wendt, Greg A.; Miller, Joseph H., Method of making a belt-creped, absorbent cellulosic sheet with a perforated belt.
Edwards, Steven L.; Super, Guy H.; McCullough, Stephen J.; Reeb, Ronald R.; Chou, Hung Liang; Yeh, Kang Chang; Dwiggins, John H.; Harper, Frank D., Multi-ply absorbent sheet of cellulosic fibers.
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