Crimp-free infusible reinforcement fabric and composite...

Details Crimp-free infusible reinforcement fabric and composite... Crimp-free infusible reinforcement fabric and composite...

B - Operations, Transporting

29

C

B29C 70/22 (2006.01) B29C 70/54 (2006.01)

Patent

CA 2537941

The present invention relates to a composite fabric (2) having a plurality of substantially parallel, coaxially aligned tow groups (5, 7), each of the tow groups having one or more tows (4) wherein a portion of the tow groups contain two or more tows, wherein the spacing (6) between tows in a tow group is less than the spacing between adjacent tow groups. The spacing between adjacent tow groups form flow channels which permit resin to flow evenly and quickly through the fabric. This results in shorter processing time and a more consistent resin distribution, decreasing the likelihood of resin starved areas within the cured laminate.

La présente invention a trait à un tissu de renfort (2) comportant une pluralité de groupes de câbles de filaments en alignement parallèle et coaxial (5, 7), chacun des groupes de câbles de filaments comprenant un ou plusieurs câbles de filaments (4) une portion des groupes de câbles de filaments contenant deux ou plusieurs câbles de filaments, l'espacement (6) entre des câbles de filaments dans un groupe de câbles de filaments étant inférieur à l'espacement entre des groupes de câbles de filaments adjacents. L'espacement entre deux groupes de câbles de filaments adjacents forment des canaux d'écoulement permettant l'écoulement uniforme et rapide de résine à travers le tissu. Cela entraîne un temps de traitement plus court et une distribution plus constante de résine, réduisant la probabilité de zones pauvres en résine au sein du stratifié traité.

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