CA2505691A1 - Soft paper product including beneficial agents - Google Patents

Soft paper product including beneficial agents Download PDF

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Publication number
CA2505691A1
CA2505691A1 CA002505691A CA2505691A CA2505691A1 CA 2505691 A1 CA2505691 A1 CA 2505691A1 CA 002505691 A CA002505691 A CA 002505691A CA 2505691 A CA2505691 A CA 2505691A CA 2505691 A1 CA2505691 A1 CA 2505691A1
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CA
Canada
Prior art keywords
composition
paper product
polysiloxane
web
cyclic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002505691A
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French (fr)
Other versions
CA2505691C (en
Inventor
Kou-Chang Liu
Roger E. Wendler, Jr.
Peter J. Allen
Paul D. Beuther
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kimberly Clark Worldwide Inc
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Publication of CA2505691A1 publication Critical patent/CA2505691A1/en
Application granted granted Critical
Publication of CA2505691C publication Critical patent/CA2505691C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H3/00—Paper or cardboard prepared by adding substances to the pulp or to the formed web on the paper-making machine and by applying substances to finished paper or cardboard (on the paper-making machine), also when the intention is to impregnate at least a part of the paper body
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/50—Spraying or projecting
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
    • D21H17/72—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic material
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/22—Agents rendering paper porous, absorbent or bulky
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/13—Silicon-containing compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/59—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/32—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/84—Paper comprising more than one coating on both sides of the substrate

Abstract

A method is disclosed for topical application of compositions containing a chemical additive onto a paper web. The present invention is also directed t o paper products formed from the method. In general, the method includes the steps of extruding a composition containing a chemical additive through a me lt blown die and then applying the composition to a moving paper web. In particular, the method provides for the application of tacky compositions to a web through a melt blown die while avoiding die tip clogging. In one embodiment, the chemical composition is extruded into fibers and applied to the paper web. The chemical composition may contain, for instance, various additives, such as a polysiloxane softener and one or more beneficial agents .

Claims (70)

1. A process for applying a beneficial agent to a paper web comprising:
providing a paper web having a first surface and a second surface;
and extruding a composition from a meltblown die onto the first surface, said composition having a viscosity sufficient for said composition to form fibers as said composition is extruded through said meltblown die and onto said first surface, said composition comprising from about 0.001% to about 30% by weight of a beneficial agent and from about 70% to about 99.99% by weight of one or more polysiloxane softeners.
2. The process of claim 1, wherein the composition is applied to the web in an amount from about 0.05% to about 5% by weight of said web.
3. The process of claim 1, wherein the beneficial agent is selected from the group consisting of aloe vera extract, vitamin E, petrolatum, and mixtures thereof.
4. The process of claim 1, wherein the polysiloxane softeners comprise a mixture of at least one hydrophilic polysiloxane softener and at least one hydrophobic polysiloxane softener.
5. The process of claim 1, wherein the polysiloxane softeners comprise at least one hydrophilic polysiloxane softener.
6. The process of claim 1, wherein the polysiloxane softeners comprise at least one hydrophobic polysiloxane softener.
7. The process of claim 1,wherein the composition has a viscosity between about 1,000 cps and about 100,000 cps.
8. The process of claim 1, wherein the composition has a viscosity of at least about 1,000 cps.
9. The process of claim 1, wherein the composition has a viscosity of between about 2,000 cps and about 10,000 cps.
10. The process of claim 1, wherein the composition consists essentially of said beneficial agent and said one or more polysiloxane softeners.
11. The process of claim 1, wherein the meltblown die tips are at a distance of from about 0.5 inches to about 3 inches away from the web surface as the composition is being extruded through the die tips.
12. The process of claim 11, wherein the die tips are between about one inch and about two inches away from the web surface as the composition is being extruded through the die tips.
13. The process of claim 1, wherein the fibers comprise continuous fibers.
14. The process of claim 1, wherein the paper web comprises a tissue web having a basis weight of less than about 60 gsm.
15. The process of claim 1, wherein the fibers exiting the meltblown die have a cross-sectional diameter of between about 5 and about 100 µm.
16. The process of claim 1, wherein the meltblown die comprises between about 2 and about 30 die tips per inch.
17. The process of claim 1, wherein the meltblown die comprises between about 3 and about 20 die tips per inch.
18. The process of claim 1, wherein the composition is extruded heterogeneously across the first surface of the web.
19. The process of claim 1, wherein the fibers are attenuated prior to being deposited onto the first surface.
20. A process for producing a tissue web comprising:
forming a tissue web comprising a first side and a second side, said tissue web having a basis weight of less than about 60 gsm;
removing at least a portion of the loose fibers and lint from the first side of the tissue web; and extruding a first composition onto the first side of the tissue web, said first composition being extruded through a first meltblown die onto the web in a heterogeneous fashion, said first meltblown die being protected from accumulation of dust and lint at the die tips by an air boundary blocking device, said first composition having a viscosity sufficient for said first composition to form fibers as said first composition is extruded through said meltblown die and onto said web, the fibers being attenuated prior to being deposited onto said tissue web, said first composition comprising one or more polysiloxane softeners.
21. The process of claim 20, further comprising removing at least a portionof the loose fibers and lint from the second side of the tissue web and extruding a second composition onto the second side of the tissue web, said second composition being extruded through a second meltblown die onto the web in a heterogeneous fashion, said second meltblown die being protected from accumulation of dust and lint at the die tips by an air boundary blocking device, said second composition having a viscosity sufficient for said composition to form fibers as said second composition is extruded through said meltblown die and onto said web, the fibers being attenuated prior to being deposited onto said tissue web.
22. The process of claim 21, wherein said second composition comprises from about 0.001% to about 30% by weight of a beneficial agent and from about 70% to about 99.99% by weight of one or more polysiloxane softeners.
23. The process of claim 21, wherein the first composition and the second composition are essentially identical.
24. The process of claim 20, wherein the first composition comprises between about 0.001% and about 30% by weight of a beneficial agent and from about 70% to about 99.99% by weight of one or more polysiloxane softeners.
25. The process of claim 24, wherein the beneficial agent is selected from the group consisting of aloe vera extract, vitamin E, petrolatum, and mixtures thereof.
26. The process of claim 24, wherein the first composition consists essentially of the beneficial agent and one or more polysiloxane softeners.
27. The process of claim 20, wherein the first composition is extruded so as to cover between about 20% and about 80% of the surface of the first side of the tissue web.
28. The process of claim 20, wherein the first composition is extruded so as to cover between about 30% and about 50% of the surface of the first side of the tissue web.
29. The process of claim 20, wherein the first composition is applied to the web in an amount from about 0.18% to about 5% by weight of said web.
30. The process of claim 20, wherein the polysiloxane softeners comprise a mixture of at least one hydrophilic polysiloxane softener and at least one hydrophobic polysiloxane softener.
31. The process of claim 20, wherein the polysiloxane softeners comprise at least one hydrophilic polysiloxane softener.
32. The process of claim 20, wherein the polysiloxane softeners comprise at least one hydrophobic polysiloxane softener.
33. The process of claim 20, wherein the first composition has a viscosity between about 1,000 cps and about 100,000 cps.
34. The process of claim 20, wherein the first composition has a viscosity between about 2,000 cps and about 10,000 cps.
35. The process of claim 20, wherein the meltblown die tips are at a distance of from about 0.5 inches to about 3 inches away from the web surface as the composition is being extruded through the die tips.
36. The process of claim 20, wherein the meltblown die tips are between about one inch and about two inches away from the web surface as the composition is being extruded through the die tips.
37. The process of claim 20, wherein the tissue web has a basis weight between about 25 gsm and about 45 gsm.
38. The process of claim 20, wherein the fibers exiting the die tips are between about 5 and about 100 µm.
39. The process of claim 20, wherein the meltblown die comprises between about 3 and about 20 die tips per inch.
40. The process of claim 20, wherein the meltblown die comprises between about 4 and about 10 die tips per inch.
41. The process of claim 20, further comprising guiding the web around a guide roll after extruding the first composition onto the first side of the web, the first side of the web contacting the guide roll, the guide roll comprising a roll cleaner, the roll cleaner removing excess first composition from the guide roll.
42. The process of claim 41, wherein the roll cleaner comprises an oscillating brush.
43. The process of claim 41, wherein the roll cleaner comprises a vacuum box.
44. The process of claim 20, wherein at least a portion of the loose fibers and lint is removed from the first side of the web with a vacuum box.
45. A paper product comprising:
a paper web comprising cellulosic fibers;
at least one beneficial agent applied to at least one side of the paper web, said at least one beneficial agent being present on the surface of the web in the form of fibers, said at least one beneficial agent comprising from about 0.001%
to about 2% by weight of the weight of the paper product; and at least one polysiloxane softener applied to at least one side of the paper web, said at least one polysiloxane softener being present on the surface of the web in the form of fibers, said at least one polysiloxane softener comprising from about 0.05% to about 3% by weight of the paper product.
46. The paper product of claim 45, wherein the at least one polysiloxane softener comprises a polysiloxane having the general formula:
wherein, A is hydrogen; hydroxyl; or straight chain, branched or cyclic, unsubstituted or substituted, C1-C8 alkyl or alkoxy radicals;
R1-R8 are independently, a straight chain, branched or cyclic, unsubstituted or substituted, C1-C6 alkyl radical;
m is from 20 to 100,000;
p is from 1 to 5,000;
q is from 0 to 5,000;
B is the following:
-R9-[(OC2H5)r-(OC3H7)s]t-G-(R10)z-W

wherein, t = 0 or 1;
z is 0 or 1;
r is from 1 to 50,000;
s is from 0 to 50,000;
R9 is a straight chain, branched or cyclic, unsubstituted or substituted, C2-C8 alkylene diradical;
R10 is a straight chain, branched or cyclic, unsubstituted or substituted, C2-C8 alkylene diradical or an alkyl cyclic ethereal radical;
G is oxygen or NR11, where R11 is hydrogen or a straight chain, branched or cyclic, unsubstituted or substituted, C1 to C8 alkyl radical;
when z = 0, W is hydrogen or a straight chain, branched or cyclic, unsubstituted or substituted, C1 to C22 alkyl radical;
when z = 1, W is hydrogen, an -NR12R13 radical, or an -NR14 radical;
wherein, R12 and R13 are independently, hydrogen or a straight chain, branched or cyclic, unsubstituted or substituted, C1-C8 alkyl radical; and R14 is a straight chain, branched or cyclic, unsubstituted or substituted, C3 to C8 alkylene diradical that forms a cyclic ring with the nitrogen;
D is the following:
-R15-(OC2H5)x-(OC3H7)y-O-R16 wherein, x is from 1 to 10,000;
y is from 0 to 10,000;
R15 is a straight chain, branched or cyclic, unsubstituted or substituted, C2-C8 alkylene diradical, R16 is hydrogen or a straight chain, branched or cyclic, unsubstituted or substituted, C1-C8 alkyl radical.
47. The paper product of claim 46, wherein at least one polysiloxane has general structure of
48. The paper product of claim 46, wherein at least one polysiloxane has general structure of
49. The paper product of claim 46, wherein at least one polysiloxane has general structure of
50. The paper product of claim 45, wherein at least one of the polysiloxane softeners comprises a polysiloxane polymer having the general formula:
wherein, X is hydrogen; hydroxyl; or straight chain, branched or cyclic, unsubstituted or substituted, C1-C8 alkyl or C1-C8 alkoxyl radical;
R1-R7 are independently, a straight chain, branched or cyclic, unsubstituted or substituted, C1-C6 alkyl radical;
m is 10 to 100,000;
n is 0 to 100,000;
Y is the following:

wherein, t is 0 or 1;
r is 10 to 100,000;
s is 10 to 100,000;
R8, R9, and R11 are independently, a straight chain, branched or cyclic, unsubstituted or substituted, C2-C8 alkylene diradical;
R10 is hydrogen or a straight chain, branched or cyclic, unsubstituted or substituted, C1~C8 alkyl radical;
W is the following:
wherein, R12 and R13 are independently, hydrogen or a straight chain, branched or cyclic, unsubstituted or substituted, C1~C8 alkyl radical, or an acyl radical; and R14 is a straight chain, branched or cyclic, unsubstituted or substituted, C3~C6 alkylene diradical; and Z is hydrogen or a straight chain, branched or cyclic, unsubstituted or substituted, C1~C24 alkyl radical.
51. The paper product of claim 50, wherein at least one polysiloxane has general structure of
52. The paper product of claim 50, wherein at least one polysiloxane has general structure of
53. The paper product of claim 50, wherein at least one polysiloxane has general structure of
54. The paper product of claim 50, wherein at least one polysiloxane has the general formula of:
55. The paper product of claim 50, wherein at least one polysiloxane has the general formula of:
56. The paper product of claim 45, wherein the at least one beneficial agent is selected from the group consisting of aloe vera, vitamin E, petrolatum, and mixtures thereof.
57. The paper product of claim 45, wherein the beneficial agent and the polysiloxane softener are applied to the paper web in the form of a composition, wherein the composition comprises between about 0.01% and about 30% of the beneficial agent and between about 70% and about 99.99% of the polysiloxane softener.
58. The paper product of claim 57, wherein the composition contains no surfactants.
59. The paper product of claim 57, wherein the composition consists essentially of one or more beneficial agents and one or more polysiloxane softeners.
60. The paper product of claim 57, wherein the composition comprises between about 0.01% and about 30% Aloe extract and between about 70% and about 99.99% polysiloxane softener.
61. The paper product of claim 57, wherein the composition comprises between about 0.01% and about 30% Aloe extract, about 0.01% vitamin E, and between about 70% and about 99.99% polysiloxane softener.
62. The paper product of claim 45, wherein the paper product has a basis weight of less than about 60 gsm.
63. The paper product of claim 45, wherein the paper product has a basis weight between about 25 gsm and about 45 gsm.
64. The paper product of claim 45, wherein the paper product has a Wet Out Time of less than about 8 seconds.
65. The paper product of claim 45, wherein the paper product has a Wet Out Time of between about 4 and about 6 seconds.
66. The paper product of claim 45, wherein the paper product has an absorbent capacity of between about 5 and about 20 times the weight of the dry paper product.
67. The paper product of claim 45, wherein the paper product has as absorbent capacity of between about 8 and about 12 times the weight of the dry paper product.
68. The paper product of claim 45, wherein the paper product has a geometric mean tensile strength of between about 500 g and about 1,000g.
69. The paper product of claim 45, wherein the paper product has a geometric mean tensile strength of between about 650 g and about 800 g.
70. The paper product of claim 45, wherein the beneficial agent and the polysiloxane softener have been applied to both sides of the paper product in the form of attenuated fibers.
CA2505691A 2002-11-27 2003-09-08 Soft paper product including beneficial agents Expired - Fee Related CA2505691C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/305,790 2002-11-27
US10/305,790 US6949168B2 (en) 2002-11-27 2002-11-27 Soft paper product including beneficial agents
PCT/US2003/028239 WO2004050995A1 (en) 2002-11-27 2003-09-08 Soft paper product including beneficial agents

Publications (2)

Publication Number Publication Date
CA2505691A1 true CA2505691A1 (en) 2004-06-17
CA2505691C CA2505691C (en) 2011-08-09

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ID=32325520

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2505691A Expired - Fee Related CA2505691C (en) 2002-11-27 2003-09-08 Soft paper product including beneficial agents

Country Status (8)

Country Link
US (2) US6949168B2 (en)
EP (1) EP1565615A1 (en)
KR (1) KR101069976B1 (en)
AU (1) AU2003268569C1 (en)
CA (1) CA2505691C (en)
MX (1) MXPA05005008A (en)
TW (1) TWI275682B (en)
WO (1) WO2004050995A1 (en)

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