Detergent pouch
View Patent ↗Single or multi-compartment detergent pouch having walls composed of a water-soluble or dispersible water-containing polymer film, the pouch having at least one compartment containing a liquid composition and preferably at least one compartment containing a hygroscopic powder composition characterised in that the liquid composition comprises a moisture regulator system such that at equilibrium at 40% relative humidity and 21.1° C. (70° F.) the amount of water in the film is within about 30%, preferably within about 10% of that of the native film.
1. A multi-compartment detergent pouch having walls comprised of a water-soluble or dispersible water-containing polymer film comprising a native film, said pouch having at least one compartment containing a liquid composition and at least one compartment containing a hygroscopic powder composition, wherein said liquid composition comprises a moisture regulator system comprising by weight of the system: a) from about 4 to about 40% of at least one C2-C6 monoalkylene polyol or a mixture thereof; b) from about 30 to about 80% of at least one polyalkylene glycol glycol, ether, glycol ester or a mixture thereof; and c) from 15 to about 30% of water.
2. A pouch according to claim 1 wherein the water content of the native film is from about 4 to about 15% by weight thereof.
3. A pouch according to claim 1 wherein the level of said at least one C2-C6 monoalkylene polyol or mixture thereof is from 5 to 15% by weight of said liquid composition.
4. A pouch according to claim 1 wherein at equilibrium at 40% relative humidity and 21.1° C. (70° F.), the elastic properties of the film are within about 40% of those of said native film.
5. The multi-compartment pouch of claim 1 wherein the moisture regulator system has a viscosity range of from about 90 to about 1000 mPa s.
6. The multi-compartment pouch of claim 1 wherein the moisture regulator system has a viscosity range of from about 100 to about 500 mPa s.