What are the mold-release agents used in casting polypropylene outdoor sculptures?

When casting polypropylene outdoor sculptures, selecting the right mold-release agent is crucial to ensure smooth demolding and a flawless finish. Common mold-release agents used in this process include silicone-based sprays, wax-based compounds, and polymer films. Silicone sprays are popular for their ease of application and excellent release properties, while wax-based lubricants provide a durable barrier against sticking. Polymer films, such as PVA (polyvinyl alcohol), are also effective for complex molds. These agents prevent adhesion between the polypropylene and the mold, reducing defects and improving production efficiency. Choosing the right release agent depends on factors like mold material, sculpture design, and environmental conditions. Proper application ensures longevity and aesthetic appeal for outdoor sculptures.