| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily and thoroughly remove a protective layer stuck on a substrate without leaving shavings, an abrasive material or the like. SOLUTION: A high-pressure flow of an aqueous working fluid containing an abrasive material is blown on a protective layer 6 on a substrate 1 or a swelling agent is previously impregnated into the protective layer 6 to swell the protective layer 6 and the high-pressure flow is blown on the swollen protective layer 6. The protective layer 6 is mechanically removed by the impact of the abrasive material and only the substrate 1 is recovered.</p> |
