Resin shower tray weight reduction: How to lighten up to 40% without losing strength
In the sanitaryware sector, shower trays manufactured with polyester resin and conventional mineral fillers (such as dolomite or calcium carbonate)
Welcome to our specialized blog on the formulation of polymer matrix composites. Here we publish practical articles for laboratory technicians, R&D managers and production managers who work with resin, gel coat and filler every day.
In this section of the blog, you’ll find:
• Information on new formulations and technologies based on dolomites, aluminum trihydrate (ATH), lightweight fillers, reinforcing fillers, etc.—explained in plain language.
• Typical composite production issues: resin ratios, filler particle size, silane treatment, and how these factors affect viscosity, curing, and finish.
• Light-weight fillers: how far you can lighten a composite part without losing mechanical performance.
• Industry news and sector requirements: fire behaviour, new developments, and the specific demands of each application.
Mineral fillers are solid particles added to the resin or gel coat. They are a key component in formulations for polymer matrix composites, as they provide the essential physical and mechanical properties required for the final product. Here, you will learn how selecting the right fillers and optimizing their ratio to the resin improves your entire production process.
Looking for a specific product rather than technical information? If you need to view our selection of mineral fillers and choose the most appropriate solution for your process, go straight to our mineral fillers page, where you will find micronized dolomites, light weight fillers, ATH and reinforcing fillers, and where you can request for technical assistance.
In the sanitaryware sector, shower trays manufactured with polyester resin and conventional mineral fillers (such as dolomite or calcium carbonate)

Thanks to its extraordinary strength, 4 times greater than traditional concrete, polymer concrete is a material that is increasingly present
AITANA CHEMICALS is a company specialized in the distribution of chemical products. We are basically focus on latest generation mold release agents and raw materials for the production of composites. Thanks to our close cooperation with strategic partners and the experience achieved in different projects, we can offer our clients advice and technical assistance for the development of customized solutions.