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If you work with epoxy resin, you may have seen references to an ‘integrated UV filter’. This feature can make a real difference in the quality and longevity of your resin creations—especially those cast in silicone rubber moulds.
What Is an Integrated UV Filter?
An integrated UV filter is a special additive included in some epoxy resins. Its main role is to reduce the effects of ultraviolet (UV) light, which can cause resin to yellow over time. Without such protection, exposure to sunlight or even indoor lighting may gradually affect the clarity and appearance of your finished pieces.
Benefits for Resin Projects
The inclusion of a UV filter helps maintain the transparency and brightness of your resin projects. For example, when using a product like “Trasparente” – Multipurpose Clear Epoxy Resin for Casting – Up to 2cm, you benefit from built-in UV resistance, so your cast items are better protected from yellowing as time passes. This is especially important for memorial pieces, jewellery, table inlays, and art objects where clarity is critical.
Choosing and Using a Resin with UV Protection
If your project is likely to encounter natural or artificial light, choosing a resin with an integrated UV filter is sensible. When pouring into a silicone rubber mould, ensure you are using the recommended layer thickness—such as up to 2cm for “Trasparente”—to achieve the best clarity and UV resistance. Always refer to supplied instructions for optimal results.
When This Matters Most
- Resin art and jewellery for display in sunlit rooms
- Ornamental castings kept outdoors or near windows
- Projects where long-term clarity and minimal discolouration are essential
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Choosing a resin with an integrated UV filter means your silicone mould castings will remain bright and clear for years to come. For more insights on choosing the right materials for your moulds, see our main guide on what to pour into the silicone rubber mold.