Let me talk about semi-permanent mold release agents. It can chemically bond with the mold surface to form a wear-resistant, chemical-resistant and thermally resistant inert and durable polymer mold release layer, which has always achieved multiple continuous demolding of composite parts. Greatly improve the efficiency of working hours.
However, while the semi-permanent release agent brings high efficiency, it is inevitable that a small amount of release agent will penetrate into the composite parts. When a second painting is required, this will be a potential hazard. In this case, sanding is often used to remove the release agent to avoid the problem of poor paint adhesion.
However, for some parts with complex structures (as shown in the example), polishing is more time-consuming and laborious, and cleaning is more direct and simple. Of course, this is not necessarily the most economical.
In view of the semi-permanent release agent characteristics, if you use solvent cleaning methods, then you need to use a specially designed mold cleaning agent or polishing agent to ensure that all the release layer of the part is completely removed without harming the mold surface (mold gel coat). Note that the cleaning effect of regular solvents such as acetone cannot be guaranteed.