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Primary preimpregnated fabrics with a reinforcement, useful for the preparation of composite structure of aircraft and in aeronautic industry, comprises a inferior face and a superior face impregnated by a thermo hardening matrix
Primary preimpregnated fabrics with a reinforcement, useful for the preparation of composite structure of aircraft and in aeronautic industry, comprises a inferior face and a superior face impregnated by a thermo hardening matrix
Primary preimpregnated fabrics (1,1') with a reinforcement (2) comprises an inferior face (F ') and a superior face (F) impregnated by a thermo hardening matrix (5) and (6) respectively, where fabrics are useful in measurement, when thermo hardening matrices have different physicochemical and rheological properties. An independent claim is also included for a sandwich composite structure (S), provided with a mattress foams or honeycomb (3) arranged between superior (4) and inferior (4') skin, where the first and second fold of the principal preimpregnated fabrics are arranged between the mattress foams and the superior skin or between the mattress foams and the inferior skin respectively.
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