Method for the application of hydrophobic chemicals to tissue webs
AssigneeKimberly-Clark Worldwide, Inc.
InventorKou-Chang Liu
Life of this patent
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Abstract
A method is disclosed for topical application of compositions containing a chemical additive onto a paper web. The present invention is also directed to paper products formed from the method. In general, the method includes the steps of extruding a composition containing a chemical additive through a melt blown die and then applying the composition to a moving paper web. In one embodiment, the chemical composition is extruded into fibers and applied to the paper web. The chemical composition can contain, for instance, various additives, such as a polysiloxane softener.
Claims53
A process for applying a hydrophobic additive to a tissue comprising the steps of:
- providing a tissue web;
- and
- extruding a hydrophobic composition onto said tissue web, said composition being extruded through a melt blown die onto said web, said composition having a viscosity sufficient for said composition to form fibers as said composition is extruded through said melt blown die and onto said tissue web, said fibers being attenuated prior to being deposited onto the tissue web, said hydrophobic composition being applied to at least one side of the web, said hydrophobic composition being applied so as to cover from about 20% to about 80% of the surface area of the side of the web.
A tissue product comprising:
- a tissue web comprising cellulosic fibers;
- and
- a topical viscous composition applied to at least one side of said tissue web, said viscous composition comprising a chemical additive, said viscous composition being present on said tissue web in the form of attenuated fibers, said viscous composition being applied to at least one side of the tissue web so as to cover from about 20% to about 80% of the surface area of the web.
A tissue product comprising:
- a tissue web having a basis weight of from about 25 gsm to about 45 gsm;
- and
- a hydrophobic composition applied to both sides of the tissue web, the hydrophobic composition comprising a chemical additive, the hydrophobic composition being present on the web in the form of attenuated fibers, the composition being applied to each side of the web so as to cover from about 20% to about 80% of the surface area of each side of the web, the treated tissue web having a Wet Out Time of less than about 5 seconds.
Dependencies are inferred from the claim text.