Method Of Cleaning
The invention comprises a method of cleaning a kitchenware article, the method comprising a pre-treatment step in which a pre-cleaning composition is applied to the kitchenware article; and a dishwashing step in which the kitchenware article is washed in a dishwashing machine using a dishwashing composition; characterised in that the pre-cleaning composition is ejected from a pressurised aerosol canister and provides a cleaning foam on the surface of the kitchenware article.
1 . A method of cleaning an article comprising:
pretreating with a pre-cleaning composition from a pressurized source the article; and
washing the article in a dishwashing machine using a dishwashing composition;
wherein the pre-cleaning composition provides a cleaning foam on a surface of the article.
2 . The method as claimed in claim 1 , wherein in the pre-treatment step the pre-cleaning composition is applied to substantially the entire cooking surface of the article.
3 . The method as claimed in claim 1 , wherein in the pre-treatment step the pre-cleaning composition is applied locally onto a part of the cooking surface of the article.
4 . The method as claimed in claim 1 , wherein the pre-cleaning composition is in the form of a liquid or gel when it is applied to the article, and it subsequently foams.
5 . The method as claimed in claim 1 , wherein the pre-cleaning composition is applied to the surface of the article as a foam.
6 . The method as claimed in claim 5 , wherein the pre-cleaning composition is already a foam when it reaches the article, but subsequently undergoes a second stage of foaming, when on a surface of the article.
7 . The method as claimed in claim 5 , wherein a pre-cleaning composition which foams, or foams further, on the article has finished its foaming within 20 minutes of being applied to the article.
8 . The method as claimed in claim 1 , the pre-cleaning composition having an initial condition when initially applied to the article, and a foamed condition, wherein the expansion coefficient of the foam on the article in the foamed condition to the pre-cleaning composition when in the initial condition is up to 1000%.
9 . (canceled)
10 . The method as claimed in claim 1 , wherein the pre-treatment step includes a dwell time, after the pre-cleaning composition is applied to the article, and lasting until the commencement of the washing step, the dwell time preferably being at least 5 minutes.
11 . The method as claimed in claim 1 , wherein the pre-cleaning composition has a pH in the range of from 7 to 13.
12 . The method as claimed in claim 1 , wherein the pre-cleaning composition comprises:
up to 80% wt water;
up to 8% wt propellant; and
one or more of the following components:
5-70% wt builder;
0.1-10% wt surfactant;
0.01-5% wt anti-corrosion agent;
0.1-20% wt performance polymer; and
0.1-5% wt enzyme.
13 . The method as claimed in claim 1 , wherein the pressurized source comprises a pressurized aerosol canister, and wherein the canister contains a bag which contains the pre-cleaning composition and includes a propellant, and a second propellant around the bag.
14 . The method as claimed in claim 1 , wherein the dishwashing composition used in the dishwashing step is the same composition as the pre-cleaning composition.
15 . (canceled)
16 . The method as claimed in claim 5 , wherein a pre-cleaning composition which foams, or foams further, on the article has finished its foaming within 10 minutes of being applied to the article.
17 . The method as claimed in claim 5 , wherein a pre-cleaning composition which foams, or foams further, on the article has finished its foaming within 5 minutes of being applied to the article.
18 . The method as claimed in claim 5 , wherein a pre-cleaning composition which foams, or foams further, on the article has finished its foaming within 2 minutes of being applied to the article.
19 . The method as claimed in claim 5 , wherein a pre-cleaning composition which foams, or foams further, on the article has finished its foaming within 1 minutes of being applied to the article.
20 . The method as claimed in claim 1 , the pre-cleaning composition having an initial condition when initially applied to the article, and a foamed condition, wherein the expansion coefficient of the foam on the article in the foamed condition to the pre-cleaning composition when in the initial condition is up to 500%.
21 . The method as claimed in claim 1 , the pre-cleaning composition having an initial condition when initially applied to the article, and a foamed condition, wherein the expansion coefficient of the foam on the article in the foamed condition to the pre-cleaning composition when in the initial condition is up to 100%.
22 . The method as claimed in claim 1 , the pre-cleaning composition having an initial condition when initially applied to the article, and a foamed condition, wherein the expansion coefficient of the foam on the article in the foamed condition to the pre-cleaning composition when in the initial condition is up to 50%.
23 . The method as claimed in claim 1 , the pre-cleaning composition having an initial condition when initially applied to the article, and a foamed condition, wherein the expansion coefficient of the foam on the article in the foamed condition to the pre-cleaning composition when in the initial condition is up to 30%.
24 . The method as claimed in claim 1 , the pre-cleaning composition having an initial condition when initially applied to the article, and a foamed condition, wherein the expansion coefficient of the foam on the article in the foamed condition to the pre-cleaning composition when in the initial condition is at least 5%.
25 . The method as claimed in claim 1 , wherein the pre-treatment step includes a dwell time, after the pre-cleaning composition is applied to the article, and lasting until the commencement of the washing step, the dwell time being at least 15 minutes.
26 . The method as claimed in claim 1 , wherein the pre-treatment step includes a dwell time, after the pre-cleaning composition is applied to the article, and lasting until the commencement of the washing step, the dwell time being at least 30 minutes.
27 . The method as claimed in claim 1 , wherein the pre-treatment step includes a dwell time, after the pre-cleaning composition is applied to the article, and lasting until the commencement of the washing step, the dwell time being at least 1 hour.
28 . The method as claimed in claim 1 , wherein the pre-treatment step includes a dwell time, after the pre-cleaning composition is applied to the article, and lasting until the commencement of the washing step, the dwell time being at least 8 hours.
29 . The method as claimed in claim 1 , wherein the pre-treatment step includes a dwell time, after the pre-cleaning composition is applied to the article, and lasting until the commencement of the washing step, the dwell time being at least 12 hours.
30 . The method as claimed in claim 1 , wherein the pre-treatment step includes a dwell time, after the pre-cleaning composition is applied to the article, and lasting until the commencement of the washing step, the dwell time being at least 24 hours.