Release Agent
Mould release agents – Clean demoulding and surface protection for composites
Why are high-quality mould release agents so important?
Professional mould release agents enable residue-free separation between the resin system and the mould – even with complex geometries and multiple lamination cycles. Especially release agents for epoxy resin, polyester resin, or vinyl ester reliably prevent resin residues from sticking to the mould surface. This protects the mould material, reduces cleaning time, and extends mould life. Carnauba wax release agents stand out with their high-gloss finish, are solvent-free, and are the ideal solution for visible surfaces such as in yacht building, design laminates, or high-end carbon components. Even in temperature-sensitive processes – e.g., in PU moulding – polyurethane release agents ensure safe and process-oriented use. The use of silicone-free release agents is particularly important when painting, bonding, or coating is planned afterward.
Our selection of professional mould release agents
Our broad range of professional mould release agents offers the right solution for every application in the composites sector. Our wax-based release agents have proven particularly effective for laminating with epoxy, polyester, or tooling resins. They provide long-lasting separation, are easy to apply and polish, and their silicone-free formulation makes them perfect for post-processing steps such as painting or bonding. For high-end surface finishes, such as in boatbuilding, design parts, or model making, we recommend our premium carnauba wax release agent. It creates an exceptionally smooth, glossy surface and is free from turpentine, PTFE, and silicone, making it ideal for multi-layer laminating processes and use on sensitive materials. Specifically developed for use with epoxy resins and thermosetting plastics, our epoxy-specific release agents prevent adhesion, reduce demoulding time, and ensure a reproducible and stable process – even in negative moulds, with carbon fibres, or in model building applications.
What are the benefits of mould release agents in composites?
> Efficient demoulding and tool protectionHigh-quality release agents reduce demoulding time, minimise tool wear, and enable clean, residue-free processing. The uniform release film prevents resin components from penetrating porous or delicate surfaces, thus extending the service life of the mould.
> Silicone-free processing – Ideal for subsequent applications
Many of our release agents are silicone-free, solvent-free, low-wax, or styrene-free, making them perfect for applications requiring subsequent bonding, painting, or coating. This ensures reliable downstream compatibility.
> Flexible use in industry and craftsmanship
Release agents can be applied using a brush, cloth, or spray device. They are suitable for complex shapes, multi-part moulds, large GRP components, carbon fibre parts, or small batch production. Their use is time-saving, efficient, and professional.
Where are mould release agents typically used?
Mould release agents are widely used in nearly all areas of composite processing: in boatbuilding, the automotive sector, model making, aerospace, vacuum infusion, RTM processes, casting, and the production of negative moulds. Especially in serial production of GRP and CFRP parts or in the manufacture of visual components, reliable demoulding is crucial for process reliability and surface finish. They are also essential for use with polyurethane resins, natural fibre mats, tooling resins, or silicone moulds, offering the flexibility and durability required in these demanding applications. Anyone looking to buy mould release agents will find a wide selection of high-performance products at HP-Textiles, tailored to suit nearly every material and process in the composite industry.