| 摘要 |
PURPOSE:To enable to make swelling dissolution of a dirty element perform in a comparative short period of time, by a method wherein a patch material impregnated with an aqueous series detergent containing a surface-active agent is stuck to a mold along a dirty surface of the mold and the dirty element of the dirty surface and the surface-active agent are made to bring into contact with each other. CONSTITUTION:A washing patch material 1 is prepared by making the inside of a sponge sheet 3, which has been made to keep airtightness by sticking a polyethylene film 2 to one side of the same, impregnate with an aqueous series detergent S formed by loading a small quantity of petroleum naphtha to an article to be obtained by dissolving a surface-active agent with water. After the patch material 1 has been pressed against a dirty part 5 of a mold 4 for sticking, whose non-airtight side has been heated at the temperature of 60-70 deg.C and made to hold for more than two minutes after the sticking, either the patch material 1 is removed or the dirty part 5 is wiped off together with the patch material 1. As solubility of a surface-active agent is deteriorated according to a temperature increase of the inside of the sponge sheet due to a matter that the non-airtight side of the washing patch material is held for more than two minutes by pressing the same against the dirty party of the heated mold for sticking, the surface-active agent is lixiviated to the dirty part side and a dirty element of the dirty part is swollen and dissolved. |
