A shaping tool for forming a semi-finished product which contains reinforcing fibers and is fed to the shaping tool in a continuous process comprises a first shaping-tool element and a second shaping-tool element which is located opposite the first shaping-tool element. The shaping-tool elements have shaping faces which face towards the semi-finished product, at least in certain operating phases of the shaping tool, and which are curved and/or inclined, at least in certain sections, in a direction of conveyance of the semi-finished product through the shaping tool, and/or curved and/or inclined, at least in certain sections, in a direction perpendicular to the direction of conveyance of the semi-finished product.

A rubber composition containing based upon parts by weight per 100 parts by weight rubber (phr): (A) 20-50 phr of a copolymer of ethylene, at least one C3 to C23 -olefin and a least one polyene monomer, whereby the copolymer unit derived from the polyene is 1 to 5 wt. %, by weight of the copolymer (A) and has a Mooney viscosity ML (1+4) at 100 C. from 51 or greater, in particular from 55 to 90 at 100 C., (B) 50-80 phr of butyl-type rubber and (C) a resin-based curative, containing a phenol formaldehyde resin cross-linker as only curing agent and an activator package comprising of metal oxide and a halogen donor where a halogenated component (B) or halogenated cross-linker as part of component (C) not already present.

A plugged stringer on a surface of a part, and a method and assembly for production of the plugged stringer. The plug has opposite first and second axial end faces. The plug also has a radially outer margin defined by a radially outer bottom face, radially outer first and second opposite side faces, and a radially outer top face. The plugged stringer also includes a covering overlaying the radially outer top face and the first and second opposite side faces of the plug and extending away from the plug along an axis to form a stringer having first and second segments delineated by the plug. The radially outer margin of the plug is at least partly covered by an adhesive. The radially outer bottom face is adhered to the surface of the part, and the covering is adhered to the radially outer first and second opposite side faces and the radially outer top face. The first and second segments of the stringer respectively define first and second fluid passages separated by the plug. The first fluid passage is fluidly isolated from the second fluid passage by the plug.

An example apparatus for fabrication of a co-cured composite assembly includes a layup tool body with a cavity, a thermal expansion insert inserted into the cavity of the layup tool body and a first uncured composite part of the composite assembly is positioned onto the thermal expansion insert, and a solid internal mandrel configured for insertion onto the first uncured composite part. During curing, the first uncured composite part compacts and reduces in thickness while the solid internal mandrel and the thermal expansion insert each increase in size to apply pressure to the first uncured composite part.

Disclosed is an elastomeric bladder tool and related systems and methods. In one embodiment, the elastomeric bladder tool comprises an elastomeric inner layer substantially defining an inner cavity of the elastomeric bladder tool, an elastomeric outer layer substantially defining an outer surface of the elastomeric bladder tool, and a permeable middle layer positioned between the elastomeric inner layer and the elastomeric outer layer. The permeable middle layer has greater permeability than both the elastomeric outer layer and the elastomeric inner layer to allow for evacuating of gases that have entered the permeable middle layer.

A method for manufacturing a metal-clad laminate sheet containing (i) a thermoplastic liquid crystal polymer film comprising a thermoplastic polymer, and (ii) a metal foil bonded to at least one surface of the thermoplastic liquid crystal polymer film, the thermoplastic polymer being capable of forming an optically anisotropic molten phase, and the method containing: forming a laminate sheet having the thermoplastic liquid crystal polymer film and the metal foil bonded together; and heat treating the laminate sheet, wherein the heat treatment satisfies conditions (1) and (2): (1) wheat treatment temperature ranges between 1 C. inclusive and 50 C. exclusive higher than a melting point of the thermoplastic liquid crystal polymer film, and (2) a time for the heat treatment ranges from one second to 10 minutes.

A method for manufacturing a metal-clad laminate sheet containing (i) a thermoplastic liquid crystal polymer film comprising a thermoplastic polymer, and (ii) a metal foil bonded to at least one surface of the thermoplastic liquid crystal polymer film, the thermoplastic polymer being capable of forming an optically anisotropic molten phase, and the method containing: forming a laminate sheet having the thermoplastic liquid crystal polymer film and the metal foil bonded together; and heat treating the laminate sheet, wherein the heat treatment satisfies conditions (1) and (2): (1) wheat treatment temperature ranges between 1 C. inclusive and 50 C. exclusive higher than a melting point of the thermoplastic liquid crystal polymer film, and (2) a time for the heat treatment ranges from one second to 10 minutes.

A method for manufacturing a multilayer circuit board containing a single-sided metal-clad laminate sheet and a substrate laminated together, the single-sided metal-clad laminate sheet containing a thermoplastic liquid crystal polymer film and a metal foil bonded to a surface of the thermoplastic liquid crystal polymer film, and the method containing: forming a laminate sheet having the thermoplastic liquid crystal polymer film and the metal foil bonded together; and heat treating the laminate sheet, wherein the heat treatment satisfies conditions (1) and (2) to manufacture the single-sided metal-clad laminate sheet: (1) a heat treatment temperature ranges between 1 C. inclusive and 50 C. exclusive higher than a melting point of the thermoplastic liquid crystal polymer film, and (2) a time for the heat treatment ranges from one second to 10 minutes.

A method for manufacturing a multilayer circuit board containing a single-sided metal-clad laminate sheet and a substrate laminated together, the single-sided metal-clad laminate sheet containing a thermoplastic liquid crystal polymer film and a metal foil bonded to a surface of the thermoplastic liquid crystal polymer film, and the method containing: forming a laminate sheet having the thermoplastic liquid crystal polymer film and the metal foil bonded together; and heat treating the laminate sheet, wherein the heat treatment satisfies conditions (1) and (2) to manufacture the single-sided metal-clad laminate sheet: (1) a heat treatment temperature ranges between 1 C. inclusive and 50 C. exclusive higher than a melting point of the thermoplastic liquid crystal polymer film, and (2) a time for the heat treatment ranges from one second to 10 minutes.

The present disclosure refers to a method for manufacturing carbon fiber panels stiffened with omega stringers for the construction of aircraft structures, such as fuselage sections, wing panels, etc. One tubular pressure member is provided for each omega stringer of the structure to be manufactured, wherein the tubular pressure member is configured with the shape of the omega stringer. Each tubular pressure member is enclosed between the omega stringer and part of the laminate, and autoclave pressure is applied to the interior of the tubular pressure member, so that the tubular pressure member is used to consolidate the omega stringers and/or part of the laminate from the interior of these two elements, while these two elements are being co-cured or co-bonded in an autoclave. Imperfections on those internal surfaces such as resin wrinkles of the structure are reduced.