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US 12,049,720 B2Granted
Method and system for reducing auto-dosing fluctuation of an automatic cleaning machine
AssigneeThe Procter & Gamble Company
InventorsMing Tang, Xiaolin Yang
Life of this patent
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Abstract
A method for reducing auto-dosing fluctuation of a washing machine equipped with an automatic dosing device, by using a liquid detergent with a relatively low high-shear viscosity. A cleaning system including a washing machine equipped with an auto-dosing device, in combination with a liquid detergent characterized by a relative low high-shear viscosity.
Claims8
A cleaning system comprising:
- a. an automatic cleaning machine comprising:
- i. a cleaning chamber for receiving an article for cleaning;
- and
- ii. a liquid detergent dispenser fluidly coupled to the cleaning chamber, wherein said liquid detergent dispenser comprises a bulk cartridge for storing multiple doses of a liquid detergent composition and an automatic dosing device for automatically dispensing a single dose of said liquid detergent composition from said bulk cartridge into the cleaning chamber during a cleaning cycle, wherein said automatic dosing device, when operating, is characterized by an operating flow rate ranging from about 0.1 ml/second to about 10 ml/second and an operating shear rate ranging from about 10 s−1 to about 250 s−1;
- b. the liquid detergent composition for use in said automatic cleaning machine, wherein said liquid detergent composition is characterized by:
- i. a total surfactant level of at least about 25 wt %, by total weight of said liquid detergent composition;
- and
- ii. a high-shear viscosity ranging from about 10 mPa·s to about 500 mPa·s, when measured at 20° C. at a relatively high shear rate of 20 s−1.
5 more elements
Dependencies are inferred from the claim text.