Definition
Prepreg is short for preimpregnated fibers or preimpregnated materials. These are fibers in sheet form — either a laid fabric (noncrimp fabric) or a woven fabric — that have been pre-treated with a reactive resin system. They remain flexible and can be further processed.
Use in the textile industry
Prepregs are used primarily in the manufacture of fiber-reinforced composites, for example in technical textiles for aerospace, automotive, and sports equipment applications. These pre-impregnated semi-finished materials enable uniform resin distribution and reproducible part quality. For processing, they are typically cured under pressure and heat, most commonly in autoclaves or presses.
Learn textile knowledge in context
You have just looked up a single technical term. In textil trainer, you learn how textile materials, processes, and contexts are connected.
The free learning platform teaches textile fundamentals step by step in interactive online courses. Each online course includes its own glossary with the most important terms of the respective topic. Across all courses, more than 600 textile terms with narrated explanations are available.
textil trainer is developed together with the Chair of Textile Technologies at Chemnitz University of Technology, chemmedia AG, and companies and educational institutions from the textile sector.