US 8,262,857 B2Granted

Process for producing tissue products

AssigneeKimberly-Clark Worldwide, Inc.

InventorsMichael Alan Hermans, Michael J. Rekoske, Thomas Joseph Dyer

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Abstract

Tissue products are disclosed containing an additive composition. The additive composition, for instance, comprises an aqueous dispersion containing an alpha-olefin polymer, an ethylene-carboxylic acid copolymer, or mixtures thereof. The alpha-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 as the web is being formed. Alternatively, the additive composition may be topically applied to the web in a post processing operation. For instance, in one embodiment, the additive composition may be applied to the web as a creping adhesive during a creping operation.

Claims12

Dependent claims

A process for producing a tissue product comprising:

forming a tissue web from an aqueous suspension of fibers;
passing the tissue web while still wet over a vacuum device while being conveyed in between a permeable structured fabric and a permeable de-watering fabric, the de-watering fabric being positioned adjacent to the vacuum device;
applying a force against the permeable structured fabric while the tissue web passes over the vacuum device for de-watering the tissue web;
conveying the web over at least one drying device for drying the tissue web;
and
applying an additive composition to at least one side of the tissue web during the process, the additive composition comprising an aqueous dispersion containing a non-fibrous 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;
the non-fibrous alpha-olefin interpolymer having an average volumetric particle size in the aqueous dispersion of less than about 5 microns, and wherein the tissue product has a bulk of greater than about 3 cc/g after the additive composition has been applied.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/829,148Filed 1 Jul 2010 · division
Priority: 7 Dec 2006
Published: US 2010/0263817 A121 Oct 2010
Granted: 11 Sep 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

D21H 27/002
Special paper not otherwise provided for, e.g. made by multi-step processes: tissue paper; Absorbent paper
D21H 21/18
Characterised by function or properties in or on the paper: reinforcing agents
D21H 17/35
Obtained by reactions only involving carbon-to-carbon unsaturated bonds: polyalkenes, e.g. polystyrene
D21H 17/37
Obtained by reactions only involving carbon-to-carbon unsaturated bonds: polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates

Family

Application11/635,379Parent of this division · filed 7 Dec 2006
US 2010/0263817 A1Pre-grant publication · published 21 Oct 2010
US 7,785,443 B2Parent of this division
US 2008/0135195 A1Published application
US 8,262,857 B2This patent

From the US filing history. Foreign family members aren’t listed.