Tableted detergent, method of manufacture and use
AssigneeUnilever PLC
InventorsKenneth James Roach, Patricia Anne Anderson
Life of this patent
Estimating the term…
Abstract
Detergent compositions are formed into tablets for dispensing. These tablets can be retained in a flexible plastic bag having a rigid opening and tapered midsection. The rigidity of the tablets enables the bag to retain its shape and prevent hydratable detergents from clogging up the dispenser. A preferred detergent formulation is a high-caustic detergent composition which includes a combination of sodium tripolyphosphate and sodium tripolyphosphate hexahydrate, defoaming surfactant, polycarboxylate and a processing and dissolution aid such as propylene glycol. This detergent composition, when tableted, provides an extremely uniform dissolution rate minimizing any temperature peaks that can occur in dispensing high-caustic detergent.
Claims6
A method of dispensing a detergent composition comprising:
- retaining tableted detergent composition in a water-insoluble, flexible-walled plastic bag having an enlarged body portion and a neck portion leading to an orifice suspended above a screen;
- said detergent composition comprising at least 40% of a nonhydrated, hydratable detergent, at least 20% of said detergent consisting of nonhydrated sodium hydroxide;
- spraying water onto said tableted detergent composition to dissolve said detergent, whereby only a gradual temperature rise occurs;
- directing dissolved detergent to an end use point.
A method of dispensing a detergent composition comprising:
- retaining tableted detergent composition in a water-insoluble, flexible plastic bag having an enlarged body portion and a neck portion leading to an orifice suspended above a screen;
- spraying water onto said detergent through said screen to dissolve said detergent;
- directing dissolved detergent to an end use point;
- said tableted detergent composition comprising 20% to 70% caustic, 20% to 60% sequestering agent, formulated from a combination of sodium tripolyphosphate and sodium tripolyphosphate hexahydrate and 2% to 10% total liquid comprising in part a dissolution flow processing aid selected from the group consisting of water-soluble polyhydric alcohols.
A method of dispensing a detergent composition, said detergent composition comprising tablets having at least 20% anhydrous sodium hydroxide and at least about 50% nonhydrated, hydratable detergent components, and wherein said tablets have a reduced dissolution rate relative to powdered detergent compositions;
- supporting said tablets in a thin-walled, flexible plastic container;
- spraying water onto said tablets in said container to dissolve said tablets and form a detergent solution;
- directing said detergent solution to an end-use location whereby the reduced dissolution rate of said tablets is controlled to prevent an excessive temperature rise in said thin-walled, flexible plastic container.
Dependencies are inferred from the claim text.