Wiping products having a low coefficient of friction in the wet state and process for producing same
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D21H-021/14
D21H-017/53
D21H-017/00
출원번호
US-0325461
(2002-12-20)
발명자
/ 주소
Shannon,Tom G.
Soerens,Dave
출원인 / 주소
Kimberly Clark Worldwide, Inc.
대리인 / 주소
Dority &
인용정보
피인용 횟수 :
8인용 특허 :
96
초록▼
Base sheets are disclosed having a reduced coefficient of friction in the wet state. In accordance with the present invention, the base sheets can be treated with a high molecular weight polyethylene oxide, a derivatized polyethylene oxide or an acrylate copolymer containing polyethylene moieties. T
Base sheets are disclosed having a reduced coefficient of friction in the wet state. In accordance with the present invention, the base sheets can be treated with a high molecular weight polyethylene oxide, a derivatized polyethylene oxide or an acrylate copolymer containing polyethylene moieties. The base sheet can be single ply or multi-ply. The base sheet can be a tissue product, such as a facial tissue, a bath tissue, or a paper towel. Alternatively, the base sheet can be a pre-moistened wipe.
대표청구항▼
What is claimed is: 1. A dry tissue product having an improved feel when wet comprising: a base sheet comprising pulp fibers, the base sheet having a first side and a second and opposite side, the base sheet having a bulk density of at least about 2 cc/g; a wet anti-friction composition applied to
What is claimed is: 1. A dry tissue product having an improved feel when wet comprising: a base sheet comprising pulp fibers, the base sheet having a first side and a second and opposite side, the base sheet having a bulk density of at least about 2 cc/g; a wet anti-friction composition applied to at least one side of the base sheet, the wet anti-friction composition being applied in an amount sufficient for the treated side of the base sheet to have a wet static coefficient of friction that is no more than about 10% greater than the dry static coefficient of friction of the treated side, wherein the wet anti-friction composition comprises a derivatized polyethylene oxide, the polyethylene oxide having a molecular weight of greater than about 20,000. 2. A tissue product as defined in claim 1, wherein the derivatized polyethylene oxide comprises: wherein R1, R1', R1"are independently H or a C1-4 alkyl; Z is a bridging radical selected from the groups comprising--O--,--S--,--OOC--,--COO--,--HNOC--,--CONH, and mixtures thereof; and R0 is a moiety containing a functional group selected from the group H, amine, amide, carboxyl, hydroxyl, aldehyde, epoxy, silanol and azetidinium groups, and mixtures thereof. 3. A tissue product as defined in claim 1, wherein the derivatized polyethylene oxide comprises: 4. A tissue product as defined in claim 1, wherein the derivatized polyethylene oxide has silanol functional groups. 5. A tissue product as defined in claim 1, wherein the derivatized polyethylene oxide forms covalent or ionic bonds with paper fibers. 6. A tissue product as defined in claim 1, wherein the derivatized polyethylene oxide contains from about 0.5 percent to about 25 percent by weight of pendant functional groups. 7. A dry tissue product having an improved feel when wet comprising: a base sheet comprising pulp fibers, the base sheet having a first side and a second and opposite side, the base sheet having a bulk density of at least about 2 cc/g; a wet anti-friction composition applied to at least one side of the base sheet, the wet anti-friction composition being applied in an amount sufficient for the treated side of the base sheet to have a wet static coefficient of friction that is no more than about 10% greater than the dry static coefficient of friction of the treated side, wherein the wet anti-friction composition comprises a polymer or copolymer derived from ethylenically unsaturated monomers wherein at least one monomer comprises a pendant polyalkylene oxide moiety. 8. A tissue product of claim 7, wherein the polymer or copolymer has a the structure: description="In-line Formulae" end="lead"-{-[Q 1]a-[Q2]b-[Q3]c-} w-description="In-line Formulae" end="tail" wherein: a and b are integers greater than or equal to 0 c is an integer >0 w is an integer greater than or equal to 1; Q1 is a monomer unit containing a functionality capable of hydrogen or covalently bonding with cellulose or any other polar or non-polar monomer not containing a pendant polyalkylene oxide functionality; Q2 is a monomer unit containing a charge functionality; Q3 is a monomer unit or mixture of monomer units containing pendant polyalkylene oxide functionality wherein said pendant polyalkylene oxide functionality has a degree of polymerization greater than 3; and the ratio of c to (a+b+c) is chosen such that the weight ratio of Q3 to [Q1+Q2+Q3] is from about 5 to 100%. 9. A tissue product as defined in claim 8 wherein the ratio of c to (a+b+c) is chosen such that the weight ratio of Q3 to [Q1+Q2+Q3] is from about 20 to 100%. 10. A tissue product as defined in claim 8 wherein polymer or copolymer has a weight average molecular weight of greater than about 20, 000. 11. A tissue product as defined in claim 8 wherein b>0 and Q2 is derived from a monomer unit containing a cationic charge functionality. 12. A tissue product as defined in claim 11 wherein the cationic charge functionality is incorporated via a diallydimethylammonium cationic monomer. 13. A tissue product as defined in claim 7, wherein the polymer or copolymer comprises: wherein R1', R1", R2, R2', R2", R3, R3', R3"are independently H, or a C1-4 alkyl group; Z1, Z2, Z3 are bridging radicals selected from the group consisting of--CONH--,--NHCO--,--O--,--S--,--CH2--,-aryl-,--COO--or--OOC--, and mixtures thereof;--R4 is any functional group incorporated as part of an ethylenically unsaturated monomer; R5 is any cationically charged species; and R6 is a polyoxyethylene or polyoxyalkylene derivative of the formula--(CHR7CHR8O)s --(CH2CH2O)t--(CHR9CHR10O)v--R11 wherein R7, R8, R9, R10 are independently C1-4 alkyl groups; s, t, v are integers such that t>0 and s+t+v>3; R11 is a terminating radical including H, alkyl, substituted alkyl, aryl and substituted aryl; and values of p & q are ≧0 while the value of r>0. 14. A tissue product as defined in claim 13, wherein the polymer or copolymer comprises: 15. A tissue product as defined in claim 7, wherein the polymer or copolymer comprises a poly(ethylene glycol) alkyl ether methacrylate. 16. A tissue product having an improved feel when wet comprising: a base sheet comprising pulp fibers, the base sheet having a first side and a second and opposite side, the base sheet having a bulk density of at least about 2 cc/g; a wet anti-friction composition applied to at least one side of the base sheet, the wet anti-friction composition being applied in an amount sufficient for the treated side of the base sheet to have a wet dynamic coefficient of friction that is no more than about 10% greater than the dry dynamic coefficient of friction of the treated side, wherein the wet anti-friction composition comprises a derivatized polyethylene oxide, the polyethylene oxide having a molecular weight of greater than about 20,000. 17. A tissue product as defined in claim 16, wherein the derivatized polyethylene oxide comprises: wherein R1, R1', R1 "are independently H or a C1-4 alkyl; Z is a bridging radical selected from the groups comprising--O--,--S--,--OOC--,--COO--,--HNOC--,--CONH, and mixtures thereof; and R0 is a moiety containing a functional group selected from the group H, amine, amide, carboxyl, hydroxyl, aldehyde, epoxy, silanol, azetidinium groups, and mixtures thereof. 18. A tissue product as defined in claim 16, wherein the derivatized polyethylene oxide comprises: 19. A tissue product as defined in claim 16, wherein the derivatized polyethylene oxide has silanol functional groups. 20. A tissue product as defined in claim 16, wherein the derivatized polyethylene oxide forms covalent or ionic bonds with paper fibers. 21. A tissue product as defined in claim 16, wherein the derivatized polyethylene oxide contains from about 0.5 percent to about 25 percent by weight of pendant functional groups. 22. A tissue product having an improved feel when wet comprising: a base sheet comprising pulp fibers, the base sheet having a first side and a second and opposite side, the base sheet having a bulk density of at least about 2 cc/g; a wet anti-friction composition applied to at least one side of the base sheet, the wet anti-friction composition being applied in an amount sufficient for the treated side of the base sheet to have a wet dynamic coefficient of friction that is no more than about 10% greater than the dry dynamic coefficient of friction of the treated side, wherein the wet anti-friction composition comprises a polymer or copolymer derived from ethylenically unsaturated monomers wherein at least one monomer comprises a pendant polyalkylene oxide moiety. 23. A tissue product as defined in claim 22, wherein the polymer or copolymer has the structure: description="In-line Formulae" end="lead"-{-[Q1 ]a-[Q2]b-[Q3]c-}w-description="In-line Formulae" end="tail" wherein: a and b are integers greater than or equal to 0 c is an integer>0 w is an integer greater than or equal to 1; Q1 is a monomer unit containing a functionality capable of hydrogen or covalently bonding with cellulose or any other polar or non-polar monomer not containing a pendant polyalkylene oxide functionality; Q2 is a monomer unit containing a charge functionality; Q3 is a monomer unit or mixture of monomer units containing pendant polyalkylene oxide functionality wherein said pendant polyalkylene oxide functionality has a degree of polymerization greater than 3; and the ratio of c to (a+b+c) is chosen such that the weight ratio of Q3 to [Q1+Q2+Q3] is from about 5 to 100%. 24. A tissue product as defined in claim 23 wherein the ratio of c to (a+b+c) is chosen such that the weight ratio of Q3 to [Q1+Q2+Q3] is from about 20 to 100%. 25. A tissue product as defined in claim 23 wherein polymer or copolymer has a weight average molecular weight of greater than about 20,000. 26. A tissue product as defined in claim 23 wherein b>0 and Q2 is derived from a monomer unit containing a cationic charge functionality. 27. A tissue product as defined in claim 26 wherein the cationic charge functionality is incorporated via a diallydimethylammonium cationic monomer. 28. A tissue product as defined in claim 22, wherein the polymer or copolymer comprises: wherein R1', R1", R2, R2', R2", R3, R3', R3"are independently H, or a C1-4 alkyl group; Z1, Z2, Z3 are bridging radicals selected from the group consisting if--CONH--,--NHCO--,--O--,--S--,--CH2--,-aryl-,--COO--or--OOC--, and mixtures thereof;--R4 is any functional group incorporated as part of an ethylenically unsaturated monomer; R5 is any cationically charged species; and R6 is a polyoxyethylene or polyoxyalkylene derivative of the formula--(CHR7CHR8O)s--(CH2CH2O)t--(CHR9CHR10O)v--R11 wherein R7, R8, R9, R10 are independently C1-4 alkyl groups; s, t, v are integers such that t>0 and s+t+v>3; R11 is a terminating radical including H, alkyl, substituted alkyl, aryl and substituted aryl; and values of p & q are ≧0 while the value of r>0. 29. A tissue product as defined in claim 28, wherein the polymer or copolymer comprises: 30. A tissue product as defined in claim 22, wherein the polymer or copolymer comprises a poly(ethylene glycol) alkyl ether methacrylate. 31. A tissue product as defined in claim 22, wherein the base sheet has a wet dynamic coefficient of friction that is no more than 3 percent greater than the dry dynamic coefficient of friction of the treated side. 32. A tissue product as defined in claim 22, wherein the base sheet has a wet dynamic coefficient of friction that is no greater than the dry dynamic coefficient of friction of the treated side. 33. A tissue product as defined in claim 22, wherein the wet anti-friction composition is applied to the base sheet in an amount from about 0.03 percent to about 3 percent by weight of fibers contained in the base sheet. 34. A tissue product as defined in claim 22, wherein the wet anti-friction composition has been topically applied to the base sheet. 35. A tissue product as defined in claim 22, wherein the wet anti-friction composition is incorporated into the base sheet during its formation. 36. A tissue product as defined in claim 22, wherein the tissue product has a wet out time of about 20 seconds or less. 37. A treated wiping product having a lower coefficient of friction in the wet state comprising: a base sheet comprising fibers, the base sheet having a first side and a second and opposite side; a wet anti-friction composition applied to at least one side of the base sheet, the wet anti-friction composition being applied to the base sheet in an amount sufficient for the treated side of the base sheet to have a lower coefficient of friction in the wet state, the anti-friction composition comprising a derivatized polyethylene oxide in which the polyethylene oxide has a molecular weight of greater than about 20, 000 or an acrylate copolymer containing polyethylene oxide moieties. 38. A treated wiping product as defined in claim 37, wherein the wet anti-friction composition comprises a derivatized polyethylene oxide comprising: wherein R1, R1', R1"are independently H or a C1-4 alkyl; Z is a bridging radical selected from the groups comprising--O--,--S--,--OOC--,--COO--,--HNOC--,--CONH, and mixtures thereof; and R0 is a moiety containing a functional group selected from the group H, amine, amide, carboxyl, hydroxyl, aldehyde, epoxy, silanol, azetidinium groups, and mixtures thereof. 39. A treated wiping product as defined in claim 38, wherein the derivatized polyethylene oxide forms covalent or ionic bonds with paper fibers. 40. A treated wiping product as defined in claim 38, wherein the derivatized polyethylene oxide contains from about 0.5 percent to about 25 percent by weight of pendant functional groups. 41. A treated wiping product as defined in claim 38, wherein R0 comprises from about one-half percent to about 10 percent by weight of the derivatized polyethylene oxide. 42. A treated wiping product as defined in claim 37, wherein the wet anti-friction composition comprises a derivatized polyethylene oxide comprising: 43. A treated wiping product as defined in claim 37, wherein the wet anti-friction composition comprises a derivatized polyethylene oxide derived from ethylenically unsaturated monomers wherein at least one monomer comprises a pendant polyalkylene oxide moiety. 44. A treated wiping product of claim 37, wherein the derivatized polyethylene oxide has the structure: description="In-line Formulae" end="lead"-{-[Q 1]a-[Q2]b-[Q3]c-}w-description="In-line Formulae" end="tail" wherein: a and b are integers greater than or equal to 0 c is an integer >0 w is an integer greater than or equal to 1; Q1 is a monomer unit containing a functionality capable of hydrogen or covalently bonding with cellulose or any other polar or non-polar monomer not containing a pendant polyalkylene oxide functionality; Q2 is a monomer unit containing a charge functionality; Q3 is a monomer unit or mixture of monomer units containing pendant polyalkylene oxide functionality wherein said pendant polyalkylene oxide functionality has a degree of polymerization greater than 3; and the ratio of c to (a+b+c) is chosen such that the weight ratio of Q3 to [Q1+Q2+Q3] is from about 5 to 100%. 45. A treated wiping product as defined in claim 44 wherein the ratio of c to (a+b+c) is chosen such that the weight ratio of Q3 to [Q1+Q2+Q3] is from about 20 to 100%. 46. A treated wiping product as defined in claim 44 wherein the derivatized polyethylene oxide has a weight average molecular weight of greater than about 20,000. 47. A treated wiping product as defined in claim 44 wherein b>0 and Q2 is derived from a monomer unit containing a cationic charge functionality. 48. A treated wiping product as defined in claim 47 wherein the cationic charge functionality is incorporated via a diallydimethylammonium cationic monomer. 49. A treated wiping product as defined in claim 44, wherein the derivatized polyethylene oxide comprises: wherein R1', R1", R2, R2', R2", R3, R3', R3"are independently H, or a C1-4 alkyl group; Z1, Z2, Z3 are bridging radicals selected from the group consisting of--CONH--,--NHCO--,--O--,--S--,--CH2--,-aryl-,--COO--,--OOC--, and mixtures thereof;--R4 is any functional group incorporated as part of an ethylenically unsaturated monomer; R5 is any cationically charged species; and R6 is a polyoxyethylene or polyoxyalkylene derivative of the formula--(CHR7CHR8O)s--(CH2CH2O)t--(CHR9CHR10O)v--R11 wherein R7, R8, R9, R10 are independently C1-4 alkyl groups; s, t, v are integers such that t>0 and s+t+v>3; R11 is a terminating radical including H, alkyl, substituted alkyl, aryl and substituted aryl; and values of p & q are ≧0 while the value of r>0. 50. A treated wiping product as defined in claim 44, wherein the derivatized polyethylene oxide comprises: 51. A treated wiping product as defined in claim 37, wherein the wet anti-friction composition is applied to the base sheet in a total amount of from about 0.03 percent to about 3 percent by weight. 52. A treated wiping product as defined in claim 37, wherein the wiping product comprises a facial tissue, a bath tissue, or a paper towel. 53. A treated wiping product as defined in claim 52, wherein the treated side of the base sheet has a wet static coefficient of friction that is no more than about 10 percent greater than the dry static coefficient of friction of the treated side. 54. A treated wiping product as defined in claim 52, wherein the treated side of the base sheet has a wet dynamic coefficient of friction that is no more than about 10 percent greater than the dry dynamic coefficient of friction of the treated side. 55. A treated wiping product as defined in claim 37, wherein the base sheet comprises more than one ply. 56. A treated wiping product as defined in claim 37, wherein the wiping product comprises a pre-moistened wipe. 57. A process for producing a treated wiping product having a reduced coefficient of friction in the wet state comprising: providing a base sheet comprising fibers, the base sheet having a first side and a second and opposite side; and incorporating into the base sheet a wet anti-friction composition, the wet anti-friction composition being incorporated into the base sheet in an amount sufficient such that at least one side of the base sheet has a lower wet static coefficient of friction, the wet anti-friction composition comprising a derivatized polyethylene oxide containing a polyethylene oxide having a molecular weight of at least about 20,000 or an acrylate copolymer containing polyethylene oxide moieties. 58. A process as defined in claim 57, wherein the wet anti-friction composition comprises a derivatized polyethylene oxide comprising: wherein R1, R1', R1"are independently H or a C1-4 alkyl; Z is a bridging radical selected from the groups comprising--O--,--S--,--OOC--,--COO--,--HNOC--,--CONH, and mixtures thereof; and R0 is a moiety containing a functional group selected from the group H, amine, amide, carboxyl, hydroxyl, aldehyde, epoxy, silanol, azetidinium groups, and mixtures thereof. 59. A process as defined in claim 58, wherein the derivatized polyethylene oxide forms covalent or ionic bonds with paper fibers. 60. A process as defined in claim 58, wherein the derivatized polyethylene oxide contains from about 0.5 percent to about 25 percent by weight of pendant functional groups. 61. A process as defined in claim 57, wherein the wet anti-friction composition comprises a derivatized polyethylene oxide comprising: 62. A process as defined in claim 57, wherein the wet anti-friction composition comprises a derivatized polyethylene oxide derived from ethylenically unsaturated monomers wherein at least one monomer comprises a pendant polyalkylene oxide moiety. 63. A process as defined in claim 62, wherein the derivatized polyethylene oxide has the structure: description="In-line Formulae" end="lead"-{-[Q 1]a-[Q2]b-[Q3]c-}w-description="In-line Formulae" end="tail" wherein: a and b are integers greater than or equal to 0 c is an integer >0 w is an integer greater than or equal to 1; Q1 is a monomer unit containing a functionality capable of hydrogen or covalently bonding with cellulose or any other polar or non-polar monomer not containing a pendant polyalkylene oxide functionality; Q2 is a monomer unit containing a charge functionality; Q3 is a monomer unit or mixture of monomer units containing pendant polyalkylene oxide functionality wherein said pendant polyalkylene oxide functionality has a degree of polymerization greater than 3; and the ratio of c to (a+b+c) is chosen such that the weight ratio of Q3 to [Q1+Q2+Q3] is from about 5 to 100%. 64. A process as defined in claim 63 wherein the ratio of c to (a+b+c) is chosen such that the weight ratio of Q3 to [Q 1+Q2+Q3] is from about 20 to 100%. 65. A process as defined in claim 63 wherein the derivatized polyethylene oxide has a weight average molecular weight of greater than about 20,000. 66. A process as defined in claim 63 wherein b>0 and Q 2 is derived from a monomer unit containing a cationic charge functionality. 67. A process as defined in claim 66 wherein the cationic charge functionality is incorporated via a diallydimethylammonium cationic monomer. 68. A process as defined in claim 57, wherein the wet anti-friction composition comprises an acrylate copolymer containing polyethylene oxide moieties comprising: wherein R1', R1", R2, R2', R2", R3, R3', R3"are independently H, or a C1-4 alkyl group; Z1, Z2, Z3 are bridging radicals selected from the group comprising--CONH--,--NHCO--,--O--,--S--,--CH2--,-aryl-,--COO--,--OOC--, and mixtures thereof; and--R4 is any functional group incorporated as part of an ethylenically unsaturated monomer; R5 is any cationically charged species; and R6 is a polyoxyethylene or polyoxyalkylene derivative of the formula--(CHR7CHR8O)s--(CH2CH2O)t--(CHR9CHR10O)v--R11 wherein R7, R8, R9, R10 are independently C1-4 alkyl groups; s, t, v are integers such that t>0 and s+t+v>3; R11 is a terminating radical including H, alkyl, substituted alkyl, aryl and substituted aryl; and values of p & q are ≧0 while the value of r>0. 69. A process as defined in claim 68, wherein the acrylate copolymer comprises: 70. A process as defined in claim 68, wherein the acrylate copolymer is incorporated into the base sheet in an amount from about 0. 03 percent to about 3 percent by weight of fibers contained in the base sheet. 71. A process as defined in claim 68, wherein the wiping product comprises a facial tissue, a bath tissue, or a paper towel. 72. A process as defined in claim 68, wherein the treated wiping product comprises a premoistened wipe. 73. A process as defined in claim 68, wherein the wet anti-friction composition is incorporated into the base sheet by being topically applied to one side of the sheet. 74. A process as defined in claim 73, wherein the wet anti-friction composition is applied topically to both sides of the base sheet. 75. A process as defined in claim 68, wherein the wet anti-friction composition is incorporated into the base sheet by being added to an aqueous suspension of fibers that is used to form the base sheet.
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Hansen Michael R. (Seattle WA) Young ; Sr. Richard H. (Federal Way WA), Wet laid fiber sheet manufacturing with reactivatable binders for binding particles to fibers.
Mundschau, Stacy Averic; Kieffer, Philip Eugene; Cunningham, Corey Thomas; Kasper, Robert E, Dispersible moist wipe with emulsion for prevention of skin irritation.
Andersson, Ingmar; Eriksson, Sören Sven; Jewitt, Dennis Edward; Klerelid, Ingvar Berndt Erik; Lindén, Anders; Nilsson, Lars B., Paper machine and method for manufacturing paper.
Zwick, Kenneth John; Shannon, Thomas Gerard; Rekoske, Michael John; Richardson, Kathy Geralyn; Pauling, Paul Kerner; Burazin, Mark Alan; Shanklin, Gary Lee; Kremer, Thomas; Sierra, Benjamin Peter, Soft paper sheet with improved mucus removal.
Cunningham, Corey Thomas; Seidling, Jeffery Richard; Kroll, Lisa Marie; Mundschau, Stacy Averic, Stable emulsion for prevention of skin irritation and articles using same.
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