A stitched multi-axial reinforcement and a method of producing a stitched multi-axial reinforcement. The stitched multi-axial reinforcement may be used in all such applications that reinforcements are generally needed and especially in such applications where either Vacuum Infusion technology or Resin Transfer Molding (RTM) technology for distributing the resin in the mold is used. The stitched multi-axial reinforcement is especially applicable in the manufacture of wind turbine blades, boats, sporting equipment, storage tanks, bus, trailer, train and truck panels, etc., and generally in all such structures that are subjected to stress in more than one direction

A stitched double layer composite hose is provided. The stitched double layer composite hose includes a middle fabric pipe layer, an inner surface composite colloid material layer and an outer surface composite colloid material layer. The structure of the fabric pipe layer is weft-stitched double-layer unit structure. The double-layer unit structure includes an outer layer, an inner layer and stitched wefts. The inner layer includes inner layer warps and inner layer wefts; the outer layer includes outer layer warps and outer layer wefts. The stitched wefts interweave with the outer layer warps and the inner layer warps for conjoining the inner layer and the outer layer together. The fabric pipe layer weaved solves problems of the stitched double layer composite hose in the fabric pipe layer of traditional casing, with such advantages as high flexibility, less weaving point, less loss of yarn strength and less degree of torsion.

A stitched double layer composite hose is provided. The stitched double layer composite hose includes a middle fabric pipe layer, an inner surface composite colloid material layer and an outer surface composite colloid material layer. The structure of the fabric pipe layer is weft-stitched double-layer unit structure. The double-layer unit structure includes an outer layer, an inner layer and stitched wefts. The inner layer includes inner layer warps and inner layer wefts; the outer layer includes outer layer warps and outer layer wefts. The stitched wefts interweave with the outer layer warps and the inner layer warps for conjoining the inner layer and the outer layer together. The fabric pipe layer weaved solves problems of the stitched double layer composite hose in the fabric pipe layer of traditional casing, with such advantages as high flexibility, less weaving point, less loss of yarn strength and less degree of torsion.

A method for producing a composite material. The method includes the steps of producing an initial dry preform, formed from unidirectional continuous dry fibers, applying non-woven filaments to a first main face of the dry preform, and needling the filaments with a needling device. The needling device includes a plurality of needles, each provided with at least one notch, so that filaments are driven by the needles and arranged in a direction substantially perpendicular to the continuous fibers of the dry perform. The method includes the further step of impregnating the dry preform with an impregnation polymer, the impregnation polymer constituting the matrix of the composite material part.

A method for producing a composite material. The method includes the steps of producing an initial dry preform, formed from unidirectional continuous dry fibers, applying non-woven filaments to a first main face of the dry preform, and needling the filaments with a needling device. The needling device includes a plurality of needles, each provided with at least one notch, so that filaments are driven by the needles and arranged in a direction substantially perpendicular to the continuous fibers of the dry perform. The method includes the further step of impregnating the dry preform with an impregnation polymer, the impregnation polymer constituting the matrix of the composite material part.

A hybrid metal composite (HMC) structure comprises tiers comprising fiber composite material structures, and additional tiers longitudinally adjacent one or more of the tiers and comprising perforated metallic structures and additional fiber composite material structures laterally adjacent the perforated metallic structures. Methods of forming an HMC structure, and related rocket motors and multi-stage rocket motor assemblies are also disclosed.

A hybrid metal composite (HMC) structure comprises tiers comprising fiber composite material structures, and additional tiers longitudinally adjacent one or more of the tiers and comprising perforated metallic structures and additional fiber composite material structures laterally adjacent the perforated metallic structures. Methods of forming an HMC structure, and related rocket motors and multi-stage rocket motor assemblies are also disclosed.

A press felt is provided including a non-woven base fabric material formed of a first fabric structure, with the first fabric structure including an array of MD yarns connected with at least one layer of a hot melt adhesive web material and at least one layer of a non-woven backing. The non-woven backing includes a layer of a first yarn system and a layer of a second yarn system oriented transverse to the first yarn system. At least one of the first and second yarn systems includes a low melt temperature adhesive that is heat activated and binds the first and second yarn systems together. The nonwoven base fabric material has an MD length and CD width and is arranged in two superimposed layers joined by the MD oriented yarns at CD oriented fold regions at each of two opposing ends thereof.

The present invention is directed to new and improved industrial containment bags wherein the improvement comprises providing methods and technologies for improving the integrity of such bags during processes designed for lifting, transporting storing and/or disposing of the same. In certain embodiments, the improvement includes providing methods and technologies for improving the sealing capabilities of the bag's closure systems. In other embodiments, the improvement includes providing methods and technologies for assessing the load balance of materials being contained in such industrial containment bags; and thereafter, compensating for any significant load imbalances. The present invention is also directed to methods of manufacturing, using, filling, lifting, transporting, storing, and/or disposing of such new and improved industrial containment bags.

A multi-layer article of woven fabric includes a woven base layer; a woven mesh layer, disposed above the base layer, the mesh layer utilizing a first common warp for each one of a plurality of stacked wefts; and a woven binding layer, disposed above the mesh layer. The base layer and the binding layer share a second common warp.