1. For small-scale household cleaning: Prioritize "hot water soaking + physical removal." After the paint layer has completely cured, peel off the entire piece and wash with warm water. This method carries no risk of chemical solvent exposure and is safe and efficient.
2. For stubborn oily paint residue: Soak in banana oil/alkyd thinner to dissolve the residue, then repeatedly wash with soapy water. This quickly dissolves the cured oily paint film, thoroughly removing residue.
3. For large-scale industrial cleaning: Use a combination of high-pressure water jet and a specialized environmentally friendly cleaning agent. A high-pressure water jet of over 10MPa can directly flush away stubborn paint stains from hard-to-reach areas. Combined with a low-toxicity cleaning agent to dissolve residue, this method achieves both high cleaning efficiency and cleanliness, suitable for batch processing needs.
