FIBROUS REINFORCING STRUCTURE FOR ARTICLES OF COMPOSITE MATERIAL HAVING PORTION OF REDUCED THICKNESS Russian patent published in 2017 - IPC D03D25/00 

FIELD: chemistry.

SUBSTANCE: fibrous structure (200) for reinforcing articles made of the composite material is proposed, woven as an integral part by a multilayer weave between the first plurality of the filament layers (C₁-C₁₀) and the second plurality of the filament layers (T₁-T₁₀). The fibrous structure comprises a portion (204) of the reduced thickness, which has: a plurality of areas (210, 211, 212) removing filaments on the continuous surface, in each of them the filaments are interrupted (F_C3; F_C8; F_C4) out of the filament layer (C₃, C₈; C₄) of the first plurality of the filament layers that lie beneath the filaments of the first plurality of the filament layers, which are located on the structure surface; and a plurality of areas (220, 221) removing filaments on the discontinuous surface, in each of them the filaments are interrupted (F_C1; F_C10) out of the filament layer (C₁; C₁₀) of the first plurality of the filament layers located on the structure surface. Each interrupted filament (F_C1; F_C10) is replaced with a filament on the structure surface (F_C2; F_C9) out of the filament layer (C₂; C₉) lying beneath the first plurality of the filament layers. The filaments of the layers of the second plurality of the filament layers (T₁-T₁₀) located on the surface of the fibrous structure are continuous, at least, around the portion (204) of the reduced thickness.

EFFECT: improved properties.

12 cl, 5 dwg