Release agents
A release agent is an important auxiliary material in many manufacturing processes involving molds. Its role is to prevent material from sticking to the mold surface. Thanks to the release agent, the part can be removed easily and intact. At the same time, release agents protect the mold surface from wear and resin adhesion, which extends the mold’s service life and ensures the quality of the final product’s surface.
Release agents are used in almost all manufacturing methods, such as:
- Hand lay-up
-
Infusion processes
- Casting and mold making
The most common release agents are:
- Waxes, which create a mechanical release layer, especially for molds where surface finish is important.
- Wipe-on liquid release agents, suitable for repeated production and allowing for quick reapplication.
- Polymer-based semi-permanent release agents that form a chemical protective film.
The choice of the right release agent depends on factors such as the mold material, the type of resin used, temperatures, and the desired surface quality. For example, a polished gel-coated mold requires different treatment than a porous wooden mold or a 3D print.
Proper use of release agents reduces errors, prevents damage to the part, and minimizes work steps such as cleaning and sanding. It is a small but essential investment in production efficiency and product quality.
Introductions:
Waxing the mold
Mold release agent treatment with Chemlease release agent