Semi-Permanent Release for Vacuum Infusion

In StockSample available

Key Features

  • Withstands full atmospheric vacuum without film disruption
  • Inert to infusion resin flow — does not affect wet-out
  • Compatible with epoxy, polyester, and vinyl ester infusion resins
  • Compatible with peel ply, release film, and flow media
  • 8–15 releases per application for production infusion tooling

This semi-permanent release agent is optimized for vacuum infusion (VARTM, SCRIMP) processes where the mold is subjected to full atmospheric vacuum during resin infusion. Standard release agents may be partially removed or compromised by the vacuum and resin flow dynamics during infusion. This product's fluoropolymer chemistry is formulated to provide a chemically inert, strongly adhered release layer that remains intact throughout the vacuum drawdown, resin infusion, and cure cycle. Compatible with epoxy, polyester, and vinyl ester infusion resins. Suitable for single-sided open infusion molds and closed-mold infusion tooling. Apply 3–5 coats on new molds, with 5–8 minutes dry time between coats. Provides 8–15 releases per application. The product does not affect resin flow dynamics or wet-out, allowing unrestricted resin infusion. Compatible with all standard peel ply, release film, and flow media consumables used in vacuum infusion.

Specifications

ParameterValue
ProcessVacuum infusion (VARTM/SCRIMP)
Shelf Life24 months
Coats (new mold)3–5
Vacuum ResistanceFull atmospheric vacuum
Dry Time Between Coats5–8 min
Releases per Application8–15

Applications

Vacuum infusion (VARTM) of composite partsSCRIMP process release for large structuresWind blade vacuum infusionMarine hull vacuum infusionIndustrial composite large part infusion production

FAQ

During vacuum infusion, the atmospheric pressure differential (up to 1 bar) drives resin through the fiber preform at significant velocity. This creates shear forces at the mold surface that can partially remove conventional release films. Additionally, some low-viscosity infusion resins act as solvents that can dissolve or swell standard wax release films. This vacuum infusion-grade product uses a fluoropolymer film that is chemically resistant to infusion resins and mechanically stable under vacuum, ensuring consistent release across the full production cycle.

Request a Quote

Related Products