Soft tissue hydrophilic tissue products containing polysiloxane and having unique absorbent properties
AssigneeKimberly-Clark Worldwide, Inc.
InventorsDavid Andrew Moline, Dale Alan Burghardt, Thomas Gerard Shannon
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Abstract
The present invention is a tissue product having two outer surfaces and at least one layered tissue sheet. The layered tissue sheet has two outer layers. The tissue product comprises at least one layer of the layered tissue sheet comprises polysiloxane pretreated pulp fibers and at least one layer of the layered tissue sheet comprises non-treated pulp fibers. At least one layer of the layered tissue sheet comprises polysiloxane pretreated pulp fibers such that one layer comprising polysiloxane pretreated pulp fibers is adjacent to a layer comprising non-treated pulp fibers.
Claims92
A method for making a layered tissue sheet that is comprised of two outer surfaces and at least two layers, the method comprising:
- a) forming at least a first aqueous suspension of pulp fibers comprising polysiloxane pretreated pulp fibers;
- b) forming at least a second aqueous suspension of pulp fibers comprising non-treated pulp fibers;
- c) forwarding the first aqueous suspension of pulp fibers comprising polysiloxane pretreated pulp fibers to a stratified headbox having at least two layers such that the first aqueous suspension of pulp fibers is directed to at least one of the layers of the headbox;
- d) forwarding the second aqueous suspension of pulp fibers comprising non-treated pulp fibers to a different layer of the headbox than the first aqueous suspension of pulp fibers;
- and,
- e) depositing the first and the second aqueous suspensions of pulp fibers onto a forming fabric thereby forming a wet layered tissue sheet comprising at least one layer comprising polysiloxane pretreated pulp fibers and at least one layer comprising non-treated pulp fibers,
- wherein at least layer comprising polysiloxane pretreated pulp fibers is adjacent to a layer comprising non-treated pulp fibers.
A tissue product, having two outer surfaces and at least one layered tissue sheet having two outer layers, comprising:
- a) at least one layer of the layered tissue sheet comprises polysiloxane pretreated pulp fibers and non-treated pulp fibers;
- and
- b) at least one layer of the layered tissue sheet comprises non-treated pulp fibers,
- wherein at least one layer comprising polysiloxene pretreated pulp fibers is adjacent to a layer comprising non-treated pulp fibers, wherein the polysiloxane pretreated pulp fibers have been treated with an amino functional polysiloxane having the general structure of:
- wherein:
- x and z are integers >0;
- y is an integer >0;
- the mole ratio of x to (x+y+z) is from about 0.05 percent to about 95 percent;
- the mole ratio of y to (x+y+z) is about 25 percent or less;
- each R0–R9 comprises independently an organofunctional group or mixtures thereof;
- R10 comprises an amino functional moiety or mixtures thereof;
- and
- R11 comprises a hydrophilic functionality or mixtures thereof.
A multi-ply tissue product having two outer surfaces and at least one outer tissue sheet having at least two layers thereby forming a layered tissue sheet comprising:
- a) at least one layer of the layered tissue sheet comprises polysiloxane pretreated pulp fibers and non-treated fibers;
- b) at least one layer of the layered tissue sheet comprises non-treated pulp fibers, wherein at least one layer comprising polysiloxane pretreated pulp fibers is adjacent the layer comprising non-treated pulp fibers, wherein the polysiloxane pretreated pulp fibers have been treated with a amino functional polysiloxane having the general structure of:
- wherein:
- x and z are integers >0;
- y is an integer >0;
- the mole ratio of x to (x+y+z) is from about 0.05 percent to about 95 percent;
- the mole ratio of y to (x+y+z) is about 25 percent or less;
- each R0–R9 comprises independently an organofunctional group or mixtures thereof;
- R10 comprises an amino functional moiety or mixtures thereof;
- and
- R11 comprises a hydrophilic functionality or mixtures thereof.
A two-ply tissue product having two outer surfaces and two outer tissue sheets having at least two layers thereby forming a layered tissue sheet comprising:
- a) at least one layer of each layered tissue sheet comprises polysiloxane pretreated pulp fibers and non-treated pulp fibers wherein the ratio of polysiloxane pretreated pulp fibers to non-treated pulp fibers by weight is from about 5% to about 95%;
- b) at least one layer of each layered tissue sheet comprises non-treated pulp fibers,
- wherein at least one layer comprising polysiloxane pretreated pulp fibers is adjacent the layer comprising non-treated pulp fibers, wherein the polysiloxane pretreated pulp fibers have been treated with a amino functional polysiloxane having the general structure of:
- wherein:
- x and z are integers >0;
- y is an integer >0;
- the mole ratio of x to (x+y+z) is from about 0.05 percent to about 95 percent;
- the mole ratio of y to (x+y+z) is about 25 percent or less;
- each R0–R9 comprises independently an organofunctional group or mixtures thereof;
- R10 comprises an amino functional moiety or mixtures thereof;
- and
- R11 comprises a hydrophilic functionality or mixtures thereof.
Dependencies are inferred from the claim text.