A weaving loom for weaving a multilayer fabric and comprising weft insertion means (90) and main heddles moved by a Jacquard main shedding mechanism for guiding main warp yarns (12) and defining a main harness width (W11). According to the invention, the weaving loom comprises auxiliary heddles (21) moved by an auxiliary shedding mechanism, for guiding auxiliary warp yarns (22) and defining a clamping area (W21) arranged within the main harness width (W11). At a first pick, the auxiliary heddles are configured for closing the auxiliary shed of auxiliary warp yarns for clamping an inserted weft (100) while the main shed is still open.

A method of fabricating a fiber structure by multilayer three-dimensional weaving between a plurality of weft yarns and of warp yarns, the fiber structure having at least first and second portions that are adjacent in the warp direction, the first portion presenting, in a direction perpendicular to the warp and weft directions, a thickness greater than the thickness of the second portion, includes making the first portion using a step of three-dimensionally weaving warp and weft layers in which a fiber fabric is formed in the form of a Mock-Leno weave grid in a core of the first portion together with skins at a surface of the first portion, a weave of the skins being modified locally so as to deflect certain warp yarns from said skins and weave them with the fiber fabric in the form of the Mock-Leno weave grid.

A fiber structure body is a multi-layered fabric. The multi-layered fabric includes first yarn layers including first yarns, and second yarn layers including second yarns that intersect with the first yarns. The first yarn layers and the second yarn layers are stacked on top of each other and bound by binder yarns. The fiber structure body includes a main body in which all yarn layers are bounded by the binder yarns, and a branch portion continuous with the main body and including a first formation and a second formation. A main axis of each of closest second yarns closest to a branching boundary line among the second yarns of the main body is parallel to the branching boundary line. The branching boundary line extends along a location from which the first formation and the second formation of the branch portion start branching out.

Fabric may be woven using a needle weaving machine. The needle weaving machine may have three weft fiber needles and two hooks for holding weft fibers from the weft fiber needles. One of the weft fiber needles may provide weft fibers to multiple hooks when weaving fabric with warp fibers held in a V-shaped profile. An electronic device may have a rectangular footprint with four curved corners. A length of fabric may be woven to form a case having four curved corners that match the four curved corners of the electronic device. The case may have a C-shaped profile with parallel upper and lower fabric portions coupled by a sidewall. Short rows of weft fiber may be used around the corners of the case to ensure that the upper and lower portions of the fabric lie flush with planar front and rear surfaces of the electronic device.

A multi-filament three-dimensional knitted fabric and a system and a method for manufacturing the same are provided. The multi-filament three-dimensional knitted fabric includes a surface layer structure, a bottom layer structure and a support structure. The support structure is disposed between the surface layer structure and the bottom layer structure, the support structure includes a plurality of first multi-filament yarns, each of the first multi-filament yarns connecting to the surface layer structure and the bottom layer structure, and each of the first multi-filament yarns having a specific denier and being composed of a plurality of fibers.

A three-dimensional fabric and a sewing method of making the same are provided. The method includes: providing a first three-dimensional fabric and a second three-dimensional fabric, placing the first fluffy flexible thread between the first inner side of the first three-dimensional fabric and the second inner side of the second three-dimensional fabric, and then stitching the first three-dimensional fabric and the second three-dimensional fabric to form a stitched structure with the first fluffy flexible thread being embedded therein.

A blade of a turbomachine includes a blade body of composite material having a fiber reinforcement having a three-dimensional weave and densified by a matrix, the reinforcement having a first part extended by a second, end, part including two segments separated from each other; and an insert having a pi-shaped section, the insert having a platform part and two longitudinal flanges separated from each other, the platform part including a housing delimited by a bottom wall and a rim, the bottom wall including an opening communicating with the space between the two flanges, the first part of the fiber reinforcement being clamped between the two flanges of the insert, the segments of the second part of the fiber reinforcement being folded against the bottom wall of the housing.

A fiber construct comprises a binding thread that binds all first fiber layers and second fiber layers in a laminating direction in a first flat portion, The binding thread is in any one of a mode of extending straight in a bent portion and a second flat portion, a mode of binding the first fiber layers and the second fiber layers partially in the laminating direction in the bent portion and the second flat portion, and a mode of being absent in the bent portion and the second flat portion. In the bent portion and the second flat portion, a second yarn is in any one of a mode of engaging with only the first yarn of a specific one of the first fiber layers and a mode of binding the first fiber layers partially in the laminating direction.

A composite panel suitable for heating an environment includes a face sheet having a 3D woven structure and abutting the environment, and a first core layer positioned on a side of the face sheet opposite the environment. The 3D woven structure includes at least one z-fiber extending in a first direction, the first direction representing a thickness of the face sheet. The woven structure further includes a plurality of weft layers, each having a weft fiber extending in a second direction, and a warp layer disposed between the plurality of weft layers, the warp layer having a warp fiber extending in a third direction. The z-fiber extends along the plurality of weft layers across a full extent of the 3d woven structure in the first direction.

Disclosed is an apparatus and method for forming three-dimensional woven preforms that can be curved and have continuous fibers in the direction of curvature. Also disclosed are woven preforms formed thereby.