PVA Release Agent 5% Solution

This 5% polyvinyl alcohol (PVA) aqueous release agent is the general-purpose standard grade for open mold hand layup and spray-up composite production. The 5% concentration provides a balanced film thickness — thin enough to replicate mold surface detail on parts, thick enough to provide 2–4 reliable releases per application. Applied by spray or wipe to the prepared mold surface and allowed to dry to a continuous, flexible, water-soluble film before resin application. The dried PVA film is chemically inert to polyester MEKP-cured resin and vinyl ester resin, providing reliable release without chemical interaction. After demolding, any PVA residue on the part surface washes off readily with clean water. The product is used in bathtub, shower tray, sanitary ware, boat hull, and general industrial FRP production. Compatible with gelcoated molds and bare laminate molds. Not suitable for elevated temperature cure, RTM closed mold, or infusion processes. Often used as the primary release in combination with carnauba paste wax in production environments.