A fiber structure, used as a reinforcement base material of a fiber-reinforced composite and including a multi-layered fabric including a warp layer and a weft layer, includes a first portion, and a second portion continuous with the first portion along one direction where the one direction refers to a direction in which warp yarns or weft yarns are adjacent to each other in the warp layer or the weft layer respectively. The warp yarns forming the second portion are thicker than those forming the first portion, and/or the weft yarns forming the second portion are thicker than those forming the first portion. When a pitch between the yarns refers to a distance between main axes of the yarns adjacent to each other in the one direction, the pitch between the yarns in the second portion is smaller than that in the first portion.

A fiber structure including a multi-layered fabric includes a first fabric layer and a second fabric layer. The first fabric layer and the second fabric layer are stacked one over another in the thickness direction of the multi-layered fabric. A warp yarn in the first fabric layer is thicker than a warp yarn in the second fabric layer, and/or a weft yarn in the first fabric layer is thicker than a weft yarn in the second fabric layer, and a pitch in the first fabric layer is smaller than a pitch in the second fabric layer, where each of the pitches refers to a distance between any two main axes of yarns adjacent to each other in each of the warp layer and the weft layer.

Adhesive fascial tape having a composite material of natural fibers, such as cotton, artificial fibers, such as nylon, polyester and elastomer or a combination thereof forming plied or cabled filament yarns forming an openwork structure with a plain, twill or satin weave of at least 3 and up to 10 is provided, which may be broken or crossed both in weft and in warp, and where the weft yarns of the structure have a density of 1-35 picks/cm and the warp threads 1-40 ends/cm. Attached to the said tape is a lower layer of synthetic acrylic resin adhesive having spaces or lines without adhesive, creating a symmetric repetitive sinuous pattern with an angle of 45 with respect to the weft.

A three dimensional woven preform, a fiber reinforced composite incorporating the preform, and methods of making thereof are disclosed. The woven preform includes one or more layers of a warp steered fabric. A portion of the warp steered fabric is compressed into a mold to form an upstanding leg. The preform includes the upstanding leg and a joggle in a body portion. The body portion and upstanding leg are integrally woven so there is continuous fiber across the preform. A portion of the warp steered fabric includes stretch broken carbon fibers in the warp direction, and another portion includes conventional carbon fibers. The warp steered fabric can be woven on a loom equipped with a differential take-up mechanism. The warp steered fabric can be a single or multilayer fabric. The preform or the composite can be a portion of an aircraft window frame.

A laminated sheet includes a base cloth layer having a porous structure obtained by impregnating a woven fabric, which has a tear strength by a trapezoid method of 150 N or more in the longitudinal direction and 100 N or more in the lateral direction, with a resin composition containing a polyurethane resin and an organic flame retardant, and a skin layer layered on the base cloth layer, and has plural air holes penetrating in the thickness direction.

The present disclosure relates to a woven-fabric adhesive tape, more particularly a cable-wrapping tape, comprising a tape-shaped woven-fabric backing having at least one adhesive coating applied to at least one side of the backing. The woven-fabric backing is formed from warp threads and weft threads and the linear density of the weft threads in dtex is greater than the linear density of the warp threads in dtex. The width-based linear density of the warp threads in dtex/cm is less than the length-based linear density of the weft threads in dtex/cm. The width-based linear density of the warp threads is about 2000 to 4000 dtex/cm and the length-based linear density of the weft threads is about 8000 to 20 000 dtex/cm, preferably 8000 to 16 000 dtex/cm. The disclosure further provides a tape-shaped woven-fabric backing for use in a woven-fabric adhesive tape.

A method includes a step of bringing a plastic matrix substance in contact with a reinforcement fiber structure to form an intermediate material. Further, the method includes a step of curing the matrix substance of the intermediate material to form a composite material. Before the plastic matrix substance is brought into contact with the reinforcement fiber structure, it is mixed with a diluent to form a mixture.