This part of EN 61249 gives requirements for properties of prepreg that is mainly intended to be used as bonding sheets in connection with laminates according EN 61249-2-7 when manufacturing multilayer boards according to EN 62326-4. This material may be also used to bond other types of laminates. Prepreg according to this standard is of defined flammability (vertical burning test). The flammability rating on fully cured prepreg is achieved through the use of non-halogenated fire retardants cont