Sacrificial Mold Release Agents

Sacrificial mold release agents, also called conventional release agents or “apply-every-cycle” mold release, are generally non-reactive coatings that do not require a curing step. Because sacrificial release coatings typically are not formulated to bond with the mold surface, they are prone to transfer to the molded part. Due to the transferring nature of sacrificial coatings, buildup in-mold is often reduced while application frequency is increased. Sacrificial coatings can provide multiple release per application in some cases; however, these coatings are commonly applied every cycle or every other cycle. Sacrificial mold release agents are ideal for processes that cannot support the lengthy cure cycles of semi-permanent coatings and may also be used for flow promotion and touchup in deep draws, small sprue openings, threads, and undercuts where semi-permanents may be less effective. A robust sacrificial release agent may also be required for particularly tenacious materials. 

McLube® sacrificial mold release agents generally provide several releases per application in higher concentrates or apply-every-cycle release characteristics when diluted. We offer water-based, solvent-based, and aerosol options to suit a wide range of manufacturing processes.

If you are considering a new release agent, McLube technical representatives and formulation chemists can help you determine if a sacrificial release agent will benefit your process and assist with product selection, testing, and application methods.