Cooling signal device for use in an absorbent article
A signal device includes a signal composite made with a coextruded film having at least two layers, a polymer skin layer and a stimulation layer. The stimulation layer includes a cooling agent and a polymer binder. The stimulation layer may be about 50 to 98 percent by weight of the signal composite. The signal device may be used in an absorbent article to provide a cooling sensation after a body-fluid insult has taken place.
1. A signal device comprising;
a signal composite that comprises a coextruded film having two layers, wherein the two layers are a first polymer skin layer comprising a water-soluble polymer and/or a water swellable polymer, and a stimulation layer comprising a first cooling agent and a polymer binder;
wherein the stimulation layer comprises 50 to 98 percent by weight of the signal composite.
2. The signal device of claim 1 wherein the water-soluble and/or water-swellable polymer is selected from the group consisting of modified thermal starch, polyvinyl alcohol, acrylic polymer, polyethylene oxide, polyethylene glycol, polyacrylamide, polyester, ethylene vinyl acetate copolymer and a combination thereof.
3. The signal device of claim 1 wherein the polymer binder is water-soluble and/or water-swellable.
4. The signal device of claim 1 wherein the first cooling agent is selected from the group consisting of xylitol, sorbitol, urea and a combination thereof.
5. The signal device of claim 1 further comprising a second polymer skin layer attached to a surface of the stimulation layer opposite the first polymer skin layer, such that the stimulation layer is disposed between the first and second polymer skin layers.
6. The signal device of claim 5 further comprising a coextruded third layer attached to the second polymer skin layer.
7. The signal device of claim 6 wherein the coextruded third layer comprises a second stimulation layer, and wherein the second stimulation layer comprises a second cooling agent that is different in composition from the first cooling agent.
8. The signal device of claim 5 wherein the second polymer skin layer comprises a water-soluble polymer and/or water swellable polymer.
9. The signal device of claim 1 wherein the first polymer skin layer is insoluble.
10. The signal device of claim 9 wherein the first polymer skin layer having perforations therein allows liquid to reach the stimulation layer.
11. The signal device of claim 1 wherein the first polymer skin layer is 2 to 10 percent of the total weight of the signal composite.
12. The signal device of claim 1 further comprising a web bonded to the signal composite.
13. The signal device of claim 12 further comprising an adhesive for binding the web to the signal composite.
14. A signal composite laminate comprising;
a first coextruded film comprising two layers, wherein the two layers of the first coextruded film are a first outer skin layer comprising a water-soluble and/or water-swellable polymer, and a first stimulation layer comprising a cooling agent and a first polymer binder; and
a second coextruded film having two layers, wherein the two layers of the second coextruded film are a second outer skin layer comprising a water-soluble polymer and a second stimulation layer comprising a second polymer binder;
wherein the first coextruded film is bonded to the second coextruded film; and
wherein the first stimulation layer comprises 50 to 98 percent by weight of the first coextruded film.