Novel intermediate materials produced by means of intertwinning by interlacing voile yarns
AssigneeHexcel Reinforcements
InventorsJean-Marc Beraud, Jean-Christophe Minni
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Abstract
The present invention provides an intermediate material composed of an assembly of overlapping and interlaced tapes, characterized in that at least some of the tapes, preferably all of the tapes, known as veiled tapes, are composed of a series of reinforcing yarns or filaments that extend in a direction parallel to the length of the tape to form a unidirectional sheet that is associated on each of its faces with a nonwoven formed from thermoplastic fibers, said two nonwovens providing said veiled tape with cohesiveness because of their thermoplastic nature, to a production method using said material for producing composite parts, and to the composite parts obtained.
Claims23
An intermediate material comprising an assembly of overlapping and interlaced tapes, wherein at least some of the tapes are veiled tapes, wherein each of said veiled tapes comprises:
- a series of reinforcing yarns or filaments that extend in a direction parallel to the length of said veiled tape to form a unidirectional sheet that has two is faces;
- a first nonwoven veil that comprises thermoplastic fibers, said first nonwoven veil being thermally bonded to one of said unidirectional sheet faces;
- and
- a second nonwoven veil that comprises thermoplastic fibers, said second nonwoven veil being thermally bonded to the other of said unidirectional sheet faces.
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Dependencies are inferred from the claim text.