5M S.r.o. products

Semipreg is an innovative solution for fibreglass manufacturing, created by impregnating fabric on one side with a foil-like resin known as LETOXIT LFX. This approach retains the benefits of traditional prepreg techniques while providing greater versatility in material composition. Various types of semipregs can cater to specific needs, including high thermal resistance up to 250°C and high impulse toughness, as well as compliance with aviation standards FAR 23 & FAR 25. The combination of semipreg with different LETOXIT LFX resin compositions allows for broad customization. In terms of storage, semipregs remain stable for one month at +20°C, four months at 5°C, and up to one year at –18°C. It is critical to ensure that temperatures do not exceed +30°C during transport and storage to maintain product integrity.