EP 3771757 B1 20220713 - TRIAXIAL MULTILAYER ARMATURE AND A ROTARY WEAVING MACHINE
Title (en)
TRIAXIAL MULTILAYER ARMATURE AND A ROTARY WEAVING MACHINE
Title (de)
DREIACHSIGE MEHRLAGENBEWEHRUNG UND RUNDWEBMASCHINE
Title (fr)
ARMATURE TRIAXIALE MULTICOUCHE ET MACHINE DE TISSAGE CIRCULAIRE
Publication
Application
Priority
EP 19020449 A 20190729
Abstract (en)
[origin: EP3771757A1] These armatures used for making composite material parts have three yarn orientations, one main axial and the two other bias, by example at +60° and -60°. They are made by alternatively layers of axial straight yarns (1) and layers of bias yarns (2) and (3). All the layers of those armatures are linked together by little axial yarns (4) that link together two bias yarns layers tying between them each layer of straight axial yarn. They are made at high speed on specific machine named 3D Rotary Weaving Machines composed by discontinuous circumferential tracks on which shuttles moves at a constant speed but in alternate opposite sense to deliver the bias yarns. Fixed tubes (16) deliver the straight axial yarns (1) between those tracks, while other tubes (17) move quickly by crossing the shuttle tracks to deliver the linking yarns (4).. All the yarns go around a central mandrel on which the armature is created.These armatures have a majority of yarns in their length sense, very few internal voids and give parts with high mechanical values. They are made at a weaving speed not achievable by none other existing process.
IPC 8 full level
D03D 3/02 (2006.01); D03C 13/00 (2006.01); D03D 13/00 (2006.01); D03D 25/00 (2006.01); D03D 37/00 (2006.01); D03D 41/00 (2006.01); D03D 49/24 (2006.01)
CPC (source: EP US)
D03D 3/02 (2013.01 - EP US); D03D 13/002 (2013.01 - EP); D03D 25/005 (2013.01 - EP); D03D 37/00 (2013.01 - EP US); D03D 41/004 (2013.01 - EP); D10B 2505/02 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 19020449 A 20190729