Creped tissue sheets treated with an additive composition according to a pattern
View Patent ↗Tissue sheets are disclosed containing an additive composition. The additive composition is applied to the tissue sheet during a creping process in a controlled manner such that the additive composition forms deposits on the sheet separated by untreated areas. In one embodiment, the additive composition is applied to a creping surface. A wet tissue sheet is then transferred to the creping surface by a topographical surface containing elevations. The elevations press the tissue sheet against the creping surface. When creped from the surface, the additive compositions transfers to the tissue sheet according to where the elevations were located on the topographical surface.
1. A creped tissue sheet containing papermaking fibers comprising a first side and a second and opposite side, the creped tissue sheet treated with an additive composition comprising an olefin polymer located on the first side of the sheet in a pattern, the pattern including deposits of the additive composition separated by untreated areas, the creped tissue sheet further comprising shavings of the additive composition randomly dispersed on the first side of the sheet.
2. A creped tissue sheet as defined in claim 1 wherein the shavings have a thicker mass of additive composition in comparison to the deposits.
3. A creped tissue sheet as defined in claim 1 , wherein the deposits comprise discrete treated areas bordered by untreated areas.
4. A creped tissue sheet as defined in claim 1 , wherein the shavings overlap at least some of the deposits.
5. A creped tissue sheet as defined in claim 1 , wherein the tissue sheet has been wet-pressed.
6. A creped tissue sheet as defined in claim 1 , wherein the tissue sheet has a bulk greater than 5 cc/g and has a basis weight of from about 10 gsm to about 60 gsm.
7. A creped tissue sheet as defined in claim 1 , wherein the olefin polymer comprises an interpolymer of ethylene or propylene with a co-monomer comprising an alkene.
8. A creped tissue sheet as defined in claim 7 , wherein the co-monomer comprises octene.
9. A creped tissue sheet as defined in claim 1 , wherein the additive composition further comprises a dispersing agent.
10. A creped tissue sheet as defined in claim 9 , wherein the dispersing agent comprises an ethylene-carboxylic acid copolymer.
11. A creped tissue sheet as defined in claim 1 , wherein the pattern of deposits cover from about 5 percent to about 80 percent of the surface area of the first side of the tissue sheet.
12. A creped tissue sheet as defined in claim 1 , wherein the additive composition is present on the first side of the sheet in an amount from about 1 percent to about 50 percent by weight of the sheet.
13. A creped tissue sheet as defined in claim 1 , wherein the creped tissue sheet has a bulk greater than 3 cc/g and contains cellulosic fibers in an amount greater than 50% by weight.