Claims
- 1. A process for manufacturing a cellulosic paper product, the process comprising:
forming an aqueous suspension of papermaking fibers; depositing said aqueous suspension of papermaking fibers onto a sheet-forming fabric to form a wet web; topically applying a liquid glycol composition comprising a glycol compound selected from the group consisting of polyethylene glycol, triethylene glycol, glycerol and mixtures thereof to said web having a dry weight consistency of at least about 80%; and through-drying said web by passing a heated gas through said web.
- 2. A process as set forth in claim 1 wherein said liquid glycol composition comprises triethylene glycol.
- 3. A process as set forth in claim 1 wherein said liquid glycol composition comprises glycerol.
- 4. A process as set forth in claim 1 wherein said liquid glycol composition comprises polyethylene glycol having a molecular weight of from about 400 to about 800.
- 5. A process as set forth in claim 4 wherein said liquid glycol composition comprises polyethylene glycol having a molecular weight of about 600.
- 6. A process as set forth in claim 4 wherein said liquid glycol composition is topically applied to said web in an amount sufficient such that the add-on amount of polyethylene glycol applied to said web is from about 0.5% to about 20% by weight based on the weight of papermaking fibers in said web.
- 7. A process as set forth in claim 6 wherein said liquid glycol composition is topically applied to said web in an amount sufficient such that the add-on amount of polyethylene glycol applied to said web is from about 0.5% to about 5% by weight based on the weight of papermaking fibers in said web.
- 8. A process as set forth in claim 7 wherein said liquid glycol composition is topically applied to said web in an amount sufficient such that the add-on amount of polyethylene glycol applied to said web is from about 1% to about 2% by weight based on the weight of papermaking fibers in said web.
- 9. A process as set forth in claim 4 wherein said liquid glycol composition topically applied to said web consists essentially of polyethylene glycol.
- 10. A process as set forth in claim 4 wherein said liquid glycol composition topically applied to said web is an aqueous solution comprising from about 1% to about 80% by weight polyethylene glycol.
- 11. A process as set forth in claim 10 wherein said liquid glycol composition topically applied to said web is an aqueous solution comprising from about 20% to about 60% by weight polyethylene glycol.
- 12. A process as set forth in claim 11 wherein said liquid glycol composition topically applied to said web is an aqueous solution comprising about 40% by weight polyethylene glycol.
- 13. A process as set forth in claim 12 wherein said liquid glycol composition is topically applied to said web in an add-on amount of about 2% to about 5% by weight based on the weight of papermaking fibers in said web.
- 14. A process as set forth in claim 10 wherein said liquid glycol composition further comprises a surfactant.
- 15. A process as set forth in claim 14 wherein the concentration of surfactant in said liquid glycol composition is about 1% based on the weight of glycol compound in the liquid glycol composition.
- 16. A process as set forth in claim 4 wherein said liquid glycol composition is topically applied to said web by spraying.
- 17. A process as set forth in claim 4 wherein said web is partially dewatered prior to through-drying said web.
- 18. A process as set forth in claim 15 wherein said liquid glycol composition is topically applied to said web after through-drying said web.
- 19. A process as set forth in claim 16 wherein said dried web to which said liquid glycol composition is applied has a dry weight consistency of at least about 90%.
- 20. A process as set forth in claim 17 wherein said dried web to which said liquid glycol composition is applied has a dry weight consistency of at least about 95%.
- 21. A process as set forth in claim 18 wherein said dried web to which said liquid glycol composition is applied has a dry weight consistency of at least about 99%.
- 22. A process as set forth in claim 16 wherein said liquid glycol composition is applied to said dried web prior to winding said dried web on a roll.
- 23. A process as set forth in claim 4 wherein said web is through-dried by passing air heated to a temperature of at least about 175° C. through said web.
- 24. A process as set forth in claim 21 wherein the air passed through said web is heated to a temperature of at least about 180° C.
- 25. A process as set forth in claim 22 wherein the air passed through said web is heated to a temperature of at least about 190° C.
- 26. A process as set forth in claim 23 wherein the air passed through said web is heated to a temperature of from about 190° to about 210° C.
- 27. A process as set forth in claim 24 wherein the air passed through said web is heated to a temperature of from about 200° to about 205° C.
- 28. A process for manufacturing a cellulosic paper product, the process comprising:
forming an aqueous suspension of papermaking fibers; depositing said aqueous suspension of papermaking fibers onto a sheet-forming fabric to form a wet web; partially dewatering said web; through-drying said partially dewatered web by passing air heated to a temperature of at least about 175° C. through said web; and topically applying a liquid glycol composition comprising polyethylene glycol having a molecular weight of from about 400 to about 800 to said dried web having a dry weight consistency of at least about 90% by weight.
- 29. A process as set forth in claim 26 wherein said liquid glycol composition comprises polyethylene glycol having a molecular weight of about 600.
- 30. A process as set forth in claim 26 wherein said liquid glycol composition is topically applied to said web in an amount sufficient such that the add-on amount of polyethylene glycol applied to said web is from about 0.5% to about 20% by weight based on the weight of papermaking fibers in said web.
- 31. A process as set forth in claim 28 wherein said liquid glycol composition is topically applied to said web in an amount sufficient such that the add-on amount of polyethylene glycol applied to said web is from about 0.5% to about 5% by weight based on the weight of papermaking fibers in said web.
- 32. A process as set forth in claim 29 wherein said liquid glycol composition is topically applied to said web in an amount sufficient such that the add-on amount of polyethylene glycol applied to said web is from about 1% to about 2% by weight based on the weight of papermaking fibers in said web.
- 33. A process as set forth in claim 26 wherein said liquid glycol composition topically applied to said web consists essentially of polyethylene glycol.
- 34. A process as set forth in claim 26 wherein said liquid glycol composition topically applied to said web is an aqueous solution comprising from about 1% to about 80% by weight polyethylene glycol.
- 35. A process as set forth in claim 32 wherein said liquid glycol composition topically applied to said web is an aqueous solution comprising from about 20% to about 60% by weight polyethylene glycol.
- 36. A process as set forth in claim 33 wherein said liquid glycol composition topically applied to said web is an aqueous solution comprising about 40% by weight polyethylene glycol.
- 37. A process as set forth in claim 34 wherein said liquid glycol composition is topically applied to said web in an add-on amount of about 2% to about 5% by weight based on the weight of papermaking fibers in said web.
- 38. A process as set forth in claim 34 wherein said liquid glycol composition further comprises a surfactant.
- 39. A process as set forth in claim 38 wherein the concentration of surfactant in said liquid glycol composition is about 1% based on the weight of glycol compound in the liquid glycol composition.
- 40. A process as set forth in claim 26 wherein said liquid glycol composition is topically applied to said web by spraying.
- 41. A process a set forth in claim 26 wherein said dried web to which said liquid glycol composition is applied has a dry weight consistency of at least about 95%.
- 42. A process as set forth in claim 37 wherein said dried web to which said liquid glycol composition is applied has a dry weight consistency of at least about 99%.
- 43. A process as set forth in claim 26 wherein said liquid glycol composition is applied to said dried web prior to winding said dried web on a roll.
- 44. A process as set forth in claim 26 wherein the air passed through said web is heated to a temperature of at least about 180° C.
- 45. A process as set forth in claim 40 wherein the air passed through said web is heated to a temperature of at least about 190° C.
- 46. A process as set forth in claim 41 wherein the air passed through said web is heated to a temperature of from about 190° to about 210° C.
- 47. A process as set forth in claim 4 wherein the air passed through said web is heated to a temperature of from about 200° to about 205° C.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation-in-part of U.S. patent application Ser. No. 10/039,236, filed Dec. 31, 2001, the entire disclosure of which is incorporated herein by reference.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
10039236 |
Dec 2001 |
US |
Child |
10361841 |
Feb 2003 |
US |