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Wax & Mould Release

Release agents play a crucial role in the composite molding process, serving as a barrier between a mold and the manufactured part. The proper release system is vital for preserving the mold’s longevity, achieving high-quality part finishes, and maximizing the number of parts extracted from the mold.

Chemical Release Agents PVA release Wax

Chemical Release Agents

Chemical Release Agents provide low buildup and high gloss qualities, serving as semi-permanent release agents compatible with polyester, epoxy, and vinylester resin, as well as standard tool surfaces. They are suitable for elevated temperature curing processes and are hand-applied using a lint-free cloth.

We offer an extensive range of release agents, including water-based, solvent-based, silicone, and silicone-free options, designed to enhance productivity and improve part and surface quality. Our semi-permanent release agents offer multiple mold releases between applications, ensuring efficient release ease. Minimal application amounts result in a cleaner working environment, reduced storage space requirements, and improved efficiency.

PVA release

Unlike wax, PVA release can be sprayed or wiped onto various mold surfaces, providing a reliable barrier for polyester, vinyl ester, and epoxy composites. While it leaves a texture on finished parts requiring polishing, it’s preferred for anticipated release issues. PVA release aids application by indicating coverage areas and only one coat is recommended to prevent an uneven surface. Molds should be thoroughly cleaned with water and a lint-free cloth before reapplication.

Wax

The earliest form of release agent developed, is available in paste or liquid form, with options ranging from natural to synthetic varieties. Primarily applied by hand, it can also be sprayed onto the tool or mold. Once applied directly to the mold, wax air-dries and is then buffed to create a high-gloss barrier. It can be easily removed with a degreaser and is compatible with polyester, epoxy, and vinylester resins.

Release waxes act as chemical agents, preventing parts from adhering permanently to mold surfaces. Particularly effective in casting, wax is considered one of the oldest forms of mold release. Its application is straightforward by hand and suitable for both new and existing molds (though thorough cleaning is essential for existing molds).

Range

Waxes
Waxes are the go-to release agents for composites, prized for their durability and ease of use. They create a durable surface, suitable for multiple pulls, and buff to a high gloss finish. Compatible with polyester, epoxy, and vinylester resins, waxes are applied by hand using a soft, lint-free cloth.
Semi-permanent
Semi-permanent release agents, more heat-resistant and chemically resistant than temporary ones, are particularly useful for molds intended for post-painting or bonding, ensuring the release remains intact during these processes.
Internal release agents
Internal release agents, dissolved within the resin mix, provide a high-release effect without compromising the chemical or physical characteristics of your mold.
PVA
PVA is commonly sprayed or wiped onto mold or pattern surfaces to provide a dependable release barrier, compatible with polyester, epoxy, and vinylester resins and gelcoats.
When applying PVA over mold-release wax, ensure the wax contains no silicones to prevent separation or "fish-eyes." PVA release film can be easily removed from molds and moldings with water.
Release film
Release film is primarily utilized in wet laminating processes within a vacuum and provides excellent release with polyester, epoxy, and vinylester resins. It serves to restrict resin flow between the laminate and breather layer, facilitating the removal of surplus resin without excessive bleed-off.

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