Cleaning method

Abstract

A method of cleaning a polyester load in a professional laundry machine the method comprises subjecting the load to main-wash, rinse and optionally pre-wash cycles and wherein the method comprises the step of contacting the load with an aqueous wash liquor containing a detergent composition comprising a silicone suds suppressor.

1 . A method of cleaning a polyester load in a professional laundry machine, the method comprising:
 subjecting the load to main-wash, rinse and optionally pre-wash cycles wherein the method comprises the step of contacting the load with an aqueous wash liquor containing a detergent composition comprising a silicone suds suppressor.   
   
   
       2 . The method of cleaning according to  claim 1  wherein the detergent composition comprises at least 10% by weight of the composition of anionic surfactant. 
   
   
       3 . The method of cleaning according to  claim 1  wherein the water of the wash liquor, preferably the water of the liquor of each cycle, has a hardness of less than about 1 mmole/litre. 
   
   
       4 . The method of cleaning according to  claim 1  wherein the method involves the step of steam heating to heat the wash liquor. 
   
   
       5 . The method of cleaning according to  claim 1  wherein the polyester load comprises items with a low level of soils and/or new items. 
   
   
       6 . The method of cleaning according to  claim 1  wherein the suds suppressor is a polydimethylsiloxane compounded with silica. 
   
   
       7 . The method of cleaning according to  claim 1  wherein the level of suds suppressor in the wash liquor is from about 0.1 ppm to about 10 ppm. 
   
   
       8 . The method of cleaning according to  claim 1  wherein the wash liquor has a pH of from about 7 to about 9. 
   
   
       9 . The method of cleaning according to  claim 1  wherein the detergent composition comprises anionic surfactant whereby at least 70% of the anionic surfactant is an alkyl benzene sulfonate. 
   
   
       10 . The method of cleaning according to  claim 1  comprising the step of contacting the load with a soil release polymer delivered into any of the main wash or rinse cycles.