Claims
- 1. A strong, soft and low dusting filled tissue paper having a density less than about 0.60 grams per cubic centimeter and comprising three superposed layers, an inner layer, a fabric-side surface outer layer, and an opposite-side surface outer layer, said inner layer being located between two said outer layers, wherein each of said layers comprises papermaking fibers and a non-cellulosic particulate filler, wherein said particulate filler is selected from the group consisting of clay, calcium carbonate, titanium dioxide, talc, aluminum silicate, calcium silicate, alumina trihydrates, activated carbon, calcium sulfate, glass microspheres, diatomaceous earth, and mixtures thereof and more than about one half of said particulate filler is located in at least one of said outer layers, said outer layers further comprising hardwood fibers having an average length less than about 1.0 mm and one or more retention aids, said retention aids being selected from the group consisting of cationic starches, cationic flocculant polymers, anionic flocculent polymers, and mixtures thereof, said tissue paper having controlled bonding in at least one of said outer layers so as to provide biased surface bonding properties such that the lint ratio is less than about 0.8.
- 2. The filled tissue paper of claim 1 wherein said tissue paper has a basis weight between about 10 g/m.sup.2 and about 50 g/m.sup.2 and a density between about 0.03 g/cm.sup.3 and about 0.6 g/cm.sup.3.
- 3. The filled tissue paper of claim 2 wherein said tissue paper has a basis weight between about 10 g/m.sup.2 and about 30 g/m.sup.2 and a density between 0.05 g/cm.sup.3 and 0.2 g/cm.sup.3.
- 4. The filled tissue paper of claim 3 wherein said particulate filler comprises from about 5% to about 50% by weight of said tissue paper.
- 5. The tissue paper of claim 3 wherein said papermaking fibers comprise a blend of hardwood fibers and softwood fibers, said hardwood fibers comprising at least about 50% and said softwood fibers comprising at least about 10% of said papermaking fibers.
- 6. The tissue paper of claim 5 wherein said inner layer comprises softwood fibers having an average length greater than at least about 2.0 mm.
- 7. The tissue paper of claim 6 wherein the said fabric-side surface outer layer contains from about 50% to about 100% greater mass than said opposite-side surface outer layer.
- 8. The tissue paper of claim 7 wherein the said fine particulate filler is located predominantly in the fabric-side surface outer layer.
- 9. The tissue paper of claim 8 wherein the softwood fibers comprise northern softwood Kraft fibers and the hardwood fibers comprise eucalyptus Kraft fibers.
- 10. The tissue paper of claim 9 wherein said particulate filler is kaolin clay.
- 11. The tissue paper of claim 1 wherein said lint ratio is less than about 0.6.
- 12. The tissue paper of claim 11 wherein a bond inhibiting agent is added to the fabric-side surface layer.
- 13. The tissue paper of claim 12 wherein said bond inhibiting agent is di(hydrogenated)tallow dimethyl ammonium methyl sulfate.
- 14. The tissue paper of claim 13 wherein the said fabric-side surface outer layer contains from about 50% to about 100% greater mass than said opposite-side surface outer layer.
- 15. The tissue paper of claim 14 wherein said particulate filler is kaolin clay.
- 16. The tissue paper of claim 15 wherein said tissue paper is pattern densified paper such that zones of relatively high density are dispersed within a high bulk field.
- 17. The tissue paper of claim 16 wherein said zones of relatively high density are continuous and the high bulk field is discrete.
- 18. The tissue paper of claim 17 wherein said discrete high bulk field constitutes less than about 150 discrete regions per square inch of area of said tissue paper.
Parent Case Info
This application is a continuation-in-part of application Ser. No. 08/418,990, filed Apr. 7, 1995, now U.S. Pat. No. 5,611,890 and application Ser. No. 08/553,167, filed Nov. 7, 1995 now abandoned.
US Referenced Citations (44)
Foreign Referenced Citations (2)
Number |
Date |
Country |
62-184197 |
Aug 1987 |
JPX |
WO 8605530 |
Sep 1986 |
WOX |
Related Publications (1)
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Number |
Date |
Country |
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553167 |
Nov 1995 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
418990 |
Apr 1995 |
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