Core material
Core mat fleece – Flexible lightweight solutions with excellent adaptability
What makes core mat fleece an ideal sandwich material for lightweight construction?
Core mat fleece combines polyester fleece with embedded thermoplastic microspheres, resulting in an extremely lightweight, yet functional core material. Once resin is applied, the fleece becomes pliable and can be precisely adapted to the component geometry—both in wet and dry conditions. Thanks to its biaxial stretchability and excellent drapeability, it is ideally suited for complex mold shapes in composite manufacturing. As part of a sandwich structure, it significantly reduces weight compared to solid laminates while improving mechanical stability.
What are the typical applications of HP-Core core mat fleece?
This fleece is primarily used as a core material in fiber-reinforced plastics and shows its strengths especially in combination with epoxy resin, vinyl ester resin, or polyester resin. It is perfect for hand laminates in boat building, automotive components, caravans, motorhomes, swimming pools, and also in ski and snowboard cores. In mold construction and the production of GRP parts, core mat fleece proves to be highly efficient, flexible, and improves surface quality, allows for precise form adaptation, and optimizes resin flow with lower material consumption.
What technical advantages does HP-Core core mat fleece offer?
Due to its special fiber structure, core mat fleece offers excellent processing properties—it is elastic, formable, and performs reliably even in complex geometries. The open fiber network enhances resin wet-out and minimizes air entrapment. Unlike rigid foam cores, the fleece remains adaptable, which is especially beneficial in hand lay-up processes. It also supports uniform fiber alignment and increases both the bending strength and shear resistance of the finished laminate. Its high material efficiency makes it a cost-effective choice in composite fabrication.
How does core mat fleece contribute to process optimization and sustainability?
Thanks to its low weight and easy handling, core mat fleece reduces not only resin consumption but also production time—especially for large components with complex contours. It can be easily cut, positioned, and pressed into shape without the need for elaborate tools or prep work. Its compatibility with standard resin systems such as epoxy, vinyl ester, and polyester makes it a versatile and reliable material. As a lightweight core material, it helps reduce the total component mass, directly impacting energy efficiency, transport costs, and sustainability. With its HP-Core core mat fleece, HP-Textiles provides a proven solution for modern lightweight composite structures.