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What mold surface treatments prevent sticking during polypropylene landscape planter box demolding?
To prevent sticking during polypropylene landscape planter box demolding, several mold surface treatments can be applied. First, non-stick coatings such as PTFE (Teflon) or nickel-PTFE composites create a low-friction surface, reducing adhesion. Second, polished or chrome-plated molds minimize surface roughness, ensuring smoother release. Third, silicone-based or semi-permanent mold release agents can be sprayed onto the mold before injection. Additionally, optimizing mold temperature and cooling rates helps reduce residual stress and sticking. Lastly, textured surfaces or micro-patterns can be designed to facilitate easier demolding. Combining these treatments ensures efficient production and high-quality polypropylene planter boxes.
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