| 摘要 |
PROBLEM TO BE SOLVED: To provide a stain removing method for stone capable of dissipating stains caused on a stone containing rock-forming mineral of calcium carbonate crystal such as marble so as to restore an initial appearance. SOLUTION: A stain removing method comprises the step of holdably adhering paint film 22 on a stone containing rock-forming mineral of calcium carbonate crystal to contact-penetrate hydrogen peroxide separated from the paint film 22 into the stone 20. The paint film 22 contains hydrogen peroxide effective for erasing stains from the stone 20, and has adhesion to the stone 20 and a shape holdability as the paint film 22 so that the erasing reaction of the stain and hydrogen peroxide can be performed effectively. Thus, the stains produced on marble in various patterns are substantially erased generally completely, and the initial appearance having beauty and luster can be restored.
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