Tissue products are disclosed containing an additive composition. The additive composition, for instance, comprises an aqueous dispersion containing an olefin polymer, an ethylene-carboxylic acid copolymer, or mixtures thereof. The olefin polymer may comprise an interpolymer of ethylene and octene,
Tissue products are disclosed containing an additive composition. The additive composition, for instance, comprises an aqueous dispersion containing an olefin polymer, an ethylene-carboxylic acid copolymer, or mixtures thereof. The olefin polymer may comprise an interpolymer of ethylene and octene, while the ethylene-carboxylic acid copolymer may comprise ethylene-acrylic acid copolymer. The additive composition may also contain a dispersing agent, such as a fatty acid. The additive composition may be incorporated into the tissue web by being combined with the fibers that are used to form the web. Alternatively, the additive composition may be topically applied to the web after the web has been formed. After the additive composition is applied to the web or otherwise incorporated into the tissue web, the tissue web is embossed. During embossing, the additive composition forms well defined embossments in the web that are water resistant. In one embodiment, the additive composition may also be used to bond multiple tissue webs together to form a multiple ply product during the embossing operation.
대표청구항▼
What is claimed is: 1. A tissue product comprising: a tissue web comprising pulp fibers contained in the web in an amount of at least 50% by weight, the tissue web having a dry bulk of at least 3 cc/g; an additive composition present on or in the tissue web, the additive composition comprising a no
What is claimed is: 1. A tissue product comprising: a tissue web comprising pulp fibers contained in the web in an amount of at least 50% by weight, the tissue web having a dry bulk of at least 3 cc/g; an additive composition present on or in the tissue web, the additive composition comprising a non-fibrous olefin polymer and a dispersing agent, the olefin polymer comprising an alpha olefin interpolymer of ethylene or propylene and at least one comonomer, each comonomer being selected from the group consisting of octene, heptene, hexene, decene, and dodecene; and wherein the tissue web includes densified areas that have a defined structure in the tissue web and are formed where the additive composition resides, and wherein the densified areas are formed by embossing the tissue web. 2. A tissue product as defined in claim 1, wherein the tissue product is a single ply tissue product. 3. A tissue product as defined in claim 1, wherein the densified areas comprise embossments that are visible from at least one side of the tissue web. 4. A tissue product as defined in claim 3, wherein the embossments define a pattern, the pattern comprising a reticulated pattern. 5. A tissue product as defined in claim 3, wherein the embossments define a pattern, the pattern comprising a pattern of discrete shapes. 6. A tissue product as defined in claim 1, wherein the densified areas are formed by embossing the tissue web, and wherein the machine direction tensile strength of the tissue web and the cross machine direction tensile strength of the web decrease by no more than about 5% after being embossed. 7. A tissue product as defined in claim 1, wherein the tissue web has been formed according to a wetlaid process. 8. A tissue product as defined in claim 1, wherein the dispersing agent comprises a carboxylic acid, a salt of a carboxylic acid, a carboxylic acid ester, or a salt of a carboxylic acid ester. 9. A tissue product as defined in claim 1, wherein the dispersing agent comprises an ethylene-carboxylic acid copolymer. 10. A tissue product as defined in claim 1, wherein the additive composition comprises a mixture of the olefin polymer and an ethylene-carboxylic acid copolymer, the ethylene-carboxylic acid copolymer comprising an ethylene-acrylic acid copolymer. 11. A tissue product as defined in claim 1, wherein the additive composition is present on or in the tissue web in an amount from about 0.1% to about 20% by weight of the web. 12. A tissue product as defined in claim 1, wherein the tissue web has a basis weight of from about 6 gsm to about 40 gsm. 13. A tissue product as defined in claim 1, wherein the tissue web has a basis weight of from about 15 gsm to about 90 gsm. 14. A tissue product as defined in claim 1, wherein the olefin polymer comprises the alpha-olefin interpolymer of ethylene and the comonomer comprises 1-heptene, 1-hexene, 1-octene, 1-decene, or 1-dodecene. 15. A tissue product as defined in claim 1, wherein the olefin polymer comprises the alpha-olefin interpolymer of ethylene and the comonomer comprises octene. 16. A multiple ply tissue product comprising: a first tissue web comprising pulp fibers, the first tissue web having a dry bulk of at least 3 cc/g; a second tissue web comprising pulp fibers contained in the web in an amount of at least 50% by weight, the second tissue web having a dry bulk of at least 3 cc/g; and an additive composition present on or in at least one of the tissue webs, the additive composition comprising a non-fibrous olefin polymer, and a dispersing agent, and wherein the olefin polymer comprises an alpha olefin interpolymer of ethylene or propylene and at least one comonomer, each comonomer being selected from the group consisting of octene, heptene, hexene, decene, and dodecene, wherein the additive composition forms bond areas between the first tissue web and the second tissue web. 17. A multi-ply tissue product as defined in claim 16, wherein the multi-ply tissue product has been embossed to form the bond areas. 18. A multi-ply tissue product as defined in claim 17, wherein the bond areas comprise defined embossments in the tissue product, the embossments being visible from at least one side of the tissue product. 19. A multi-ply tissue product as defined in claim 18, wherein the tissue product has been embossed according to a pattern, the pattern being visible from at least one side of the tissue web. 20. A multi-ply tissue product as defined in claim 16, wherein the first tissue web and the second tissue web have been formed according to a wetlaid process. 21. A multi-ply tissue product as defined in claim 16, wherein the dispersing agent comprises a carboxylic acid, a salt of a carboxylic acid, a carboxylic acid ester, or a salt of a carboxylic acid ester. 22. A multi-ply tissue product as defined in claim 16, wherein the dispersing agent comprises an ethylene-carboxylic acid copolymer. 23. A multi-ply tissue product as defined in claim 16, wherein the additive composition comprises a mixture of the olefin polymer and an ethylene-carboxylic acid copolymer, the ethylene-carboxylic acid copolymer comprising an ethylene-acrylic acid copolymer. 24. A multi-ply tissue product as defined in claim 16, wherein the additive composition is present on or in at least one of the tissue webs in an amount from about 0.1% to about 20% by weight. 25. A multi-ply tissue product as defined in claim 16, wherein the additive composition was topically applied to at least one of the tissue webs. 26. A multi-ply tissue product as defined in claim 16, the olefin polymer having a particle size of from about 0.1 micron to about 5 microns prior to being incorporated into at least one of the tissue webs. 27. A multi-ply tissue product as defined in claim 16, wherein the olefin polymer comprises the alpha-olefin interpolymer of ethylene and the comonomer comprises 1-heptene, 1-hexene, 1-octene, 1-decene, or 1-dodecene. 28. A multi-ply tissue product as defined in claim 16, wherein the olefin polymer comprises the alpha-olefin interpolymer of ethylene and the comonomer comprises octene. 29. A process for producing a tissue product as defined in claim 1 comprising: incorporating an additive composition into a tissue web, the tissue web comprising pulp fibers, the additive composition comprising a non-fibrous olefin polymer and a dispersing agent, and wherein the olefin polymer comprises an alpha olefin interpolymer of ethylene or propylene and at least one comonomer, each comonomer being selected from the group consisting of octene, heptene, hexene, decene, and dodecene; and embossing the tissue web to form densified fiber areas that have a defined structure in the tissue web, the defined structure being supported by the additive composition. 30. A process as defined in claim 29, wherein the densified areas comprise embossments that are visible from at least one side of the tissue web. 31. A process as defined in claim 30, wherein the embossments define a pattern, the pattern comprising a reticulated pattern. 32. A process as defined in claim 30, wherein the embossments define a pattern, the pattern comprising a pattern of discrete shapes. 33. A process as defined in claim 29, wherein the dispersing agent comprises a carboxylic acid, a salt of a carboxylic acid, a carboxylic acid ester, or a salt of a carboxylic acid ester. 34. A process as defined in claim 29, wherein the dispersing agent comprises an ethylene-carboxylic acid copolymer. 35. A process as defined in claim 29, wherein the additive composition comprises a mixture of the olefin polymer and an ethylene-carboxylic acid copolymer, the ethylene-carboxylic acid copolymer comprising an ethylene-acrylic acid copolymer. 36. A process as defined in claim 29, wherein the additive composition is present on or in the tissue web in an amount from about 0.1% to about 20% by weight of the web. 37. A process as defined in claim 29, wherein the additive composition is topically applied to the tissue web. 38. A process as defined in claim 29, wherein the tissue web during the embossing step is fed into a nip formed between a heated embossing roll and a backing roll. 39. A process as defined in claim 29, wherein the tissue web is embossed together with a second tissue web, the densified areas forming bond areas between the adjacent webs. 40. A process as defined in claim 29, wherein the tissue web is formed from an aqueous suspension of pulp fibers. 41. A process as defined in claim 29, wherein the olefin polymer comprises the alpha-olefin interpolymer of ethylene and the comonomer comprises 1 heptene, 1-hexene, 1-octene, 1-decene, or 1-dodecene. 42. A process as defined in claim 29, wherein the olefin polymer comprises the alpha-olefin interpolymer of ethylene and the comonomer comprises octene.
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