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Several layers of unidirectional reinforcement material (yarn, strand, roving) are stacked collectively and oriented by means of a weft insertion system in predetermined directions that can vary within large limits (0° to 90°). Additional stitching yarns applied by a knitting system bind the layers together to prevent slippage. Other reinforcing materials such as chopped strand mat, tissue can be added to the multiaxial structure. Claimed advantages of such a structure are: - reinforcement in predetermined direction. - high drapeability. - good filament wet out - good impact resistance - reduction of lay up time. |
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Saint-Gobain Vetrotex Yarns and Zerotwist products sized with TD22G, because of their compatibility with various resins, can be processed on the multiaxial machine to produce valuable reinforcement structures. |
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