Dispersible hydroentangled basesheet with triggerable binder
View Patent ↗The present disclosure is generally directed to a dispersible moist wipe comprising hydroentangled fibers and a binder composition. The moist wipe demonstrates high initial wet strength while maintaining effective dispersion in an aqueous environment. The moist wipe has potential application as a flushable surface cleaning product and/or a flushable cleansing cloth.
1. A dispersible moist wipe comprising a plurality of entangled fibers and about 0.5 grams per square meter (gsm) to about 5 gsm of an ion-triggerable binder composition, the wipe having a geometric mean tensile (GMT) wet strength of at least about 300 grams per inch (g/in), a GMT soak wet strength of less than about 180 g/in, a wet density of less than about 0.115 g/ccm and a CD stretch percent greater than about 40%.
2. The dispersible moist wipe as set forth in claim 1 wherein the ion-triggerable binder is present in a range between about 1.2 gsm to about 2.6 gsm.
3. The dispersible moist wipe as set forth in claim 2 wherein the ion-triggerable binder is present in a range between about 1.8 gsm and about 2.2 gsm.
4. The dispersible moist wipe as set forth in claim 1 wherein the GMT wet strength is at least about 500 g/in.
5. The dispersible moist wipe as set forth in claim 4 wherein the GMT wet strength is at least about 700 g/in.
6. The dispersible moist wipe as set forth in claim 1 wherein the GMT soak strength of the wipe is less than about 160 g/in.
7. The dispersible moist wipe as set forth in claim 6 wherein the GMT soak strength of the wipe is less than about 140 g/in.
8. The dispersible moist wipe as set forth in claim 1 wherein the CD stretch percent of the wipe is between about 45% and about 55%.
9. The dispersible moist wipe as set forth in claim 8 wherein the CD stretch percent of the wipe is between about 47% and about 49%.
10. The dispersible moist wipe as set forth in claim 1 wherein the wet density is in a range from about 0.100 g/ccm to about 0.115 g/ccm.
11. The dispersible moist wipe as set forth in claim 10 wherein the wet density is in a range from about 0.110 g/ccm to about 0.112 g/ccm.
12. The dispersible moist wipe as set forth in claim 1 wherein the fibers comprise a hydroentangled mixture of regenerated fibers and natural fibers.
13. The dispersible moist wipe as set forth in claim 1 wherein the fibers comprise a mixture of natural cellulose fibers and regenerated cellulose fibers.
14. The dispersible moist wipe as set forth in claim 13 wherein the natural fibers have a length-weighted average fiber length greater than about 2 millimeters.
15. The dispersible moist wipe as set forth in claim 13 wherein the natural fibers have a fiber length between about 0.5 millimeters and about 1.5 millimeters.
16. The dispersible moist wipe as set forth in claim 13 wherein the regenerated fibers have a fiber length of from about 3 millimeters to about 60 millimeters.
17. The dispersible moist wipe as set forth in claim 13 wherein the regenerated fibers have a fineness in the range of from about 0.5 denier to about 3 denier.
18. The dispersible moist wipe as set forth in claim 1 wherein the fibers comprise synthetic fibers.
19. The dispersible moist wipe as set forth in claim 18 wherein the synthetic fibers have a fiber length in the range of from about 3 millimeters to about 20 millimeters.
20. The dispersible moist wipe as set forth in claim 1 wherein the binder composition comprises a composition having the structure:
wherein x=1 to about 15 mole percent; y=about 60 to about 99 mole percent; and z=0 to about 30 mole percent; Q is selected from C 1 -C 4 alkyl ammonium, quaternary C 1 -C 4 alkyl ammonium and benzyl ammonium; Z is selected from —O—, —COO—, —OOC—, —CONH—, and —NHCO—; R 1 , R 2 , R 3 are independently selected from hydrogen and methyl; R 4 is C 1 -C 4 alkyl; R 5 is selected from hydrogen, methyl, ethyl, butyl, ethylhexyl, decyl, dodecyl, hydroxyethyl, hydroxypropyl, polyoxyethylene, and polyoxypropylene.