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Hexcel Corporation patents


Recent patent applications related to Hexcel Corporation. Hexcel Corporation is listed as an Agent/Assignee. Note: Hexcel Corporation may have other listings under different names/spellings. We're not affiliated with Hexcel Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "H" | Hexcel Corporation-related inventors


Improvements in or relating to moulding

A mould for the production of articles comprising a cavity for the retention of a fibrous material impregnated with a curable resin defined by a top, a base (1) and side walls (4, 5, 6, 7) and an internal insert (2) having sectional walls that can move independently of each other in order to exert pressure on the fibrous material.. . ... Hexcel Corporation

Polymer powder and method of preparing the same

A powder composition suitable for use in laser sintering for printing a three-dimensional object. The powder composition includes a polyaryletherketone (paek) powder having a plurality of particles. ... Hexcel Corporation

Method for analytically determining laser power for laser sintering

A method of analytically determining a laser power for laser sintering includes choosing a batch of powder material for building a plurality of test rods; selecting a range of laser power for building the test rods; determining a plurality of power increments within the selected range to define a plurality of laser power settings; programming a laser sintering machine to build at least one test rod at each laser power setting; constructing the test rods; wherein the optimal power is at least one watt below a lowest laser power setting associated with the formation of voids; identifying the laser power setting used to construct a respective test rod without formation of voids in the surface as an optimal laser power; and configuring the selective laser sintering machine with the optimal laser power when conducting a laser sintering process using the chosen batch of powder material.. . ... Hexcel Corporation

Polymer powder and method of using the same

A method for preparing a pekk powder for use in sls includes the steps of: providing a raw, non-powder pekk material; heat treating the raw pekk to evaporate at least substantially all of a liquid solvent in the raw pekk, causing at least substantially all of the raw pekk to be in the form of irregularly-shaped particles; cooling the raw pekk; and grinding the raw pekk to form a pekk powder.. . ... Hexcel Corporation

Method of applying an intermediate material making it possible to ensure the cohesion thereof, method of forming a stack intended for the manufacture of composite components and intermediate material

The present invention relates to a method for applying spot transverse forces to an intermediate material composed of a layer of unidirectional reinforcing fibers associated on at least one of its faces to a layer of thermoplastic and/or thermosetting material that does not represent more than 10% of the total weight of the intermediate material, wherein the spot transverse forces are applied while the intermediate material is under tension in the direction of the unidirectional reinforcing fibers.. . ... Hexcel Corporation

Method for analytically determining sls bed temperatures

A method for determining a bed temperature setpoint for use with a powder in a selective laser sintering machine is disclosed. The method includes the step of providing a powder comprising a polymer for use in a selective laser sintering machine. ... Hexcel Corporation

Carbon fibers having improved strength and modulus and an associated method and apparatus for preparing same

The invention is directed to carbon fibers having high tensile strength and modulus of elasticity. The invention also provides a method and apparatus for making the carbon fibers. ... Hexcel Corporation

Improvements in or relating to three dimensional mouldings

This invention relates to a moulding compound blank, a method for compression moulding the same and the resulting product. The blank comprises a moulding compound comprising a fibrous reinforcement material and a resin material wherein the moulding compound comprises a flow guide (6, 7, 8) located at the surface of the blank for directing flow of the moulding compound within the cavity of the compression mould during compression moulding.. ... Hexcel Corporation

Semipreg with thermoplastic toughened novolac-based epoxy resin matrix

A semipreg that can be cured/molded to form aerospace composite parts including rocket booster casings. The semipreg includes a fibrous layer and a resin layer located on one side of the fibrous layer. ... Hexcel Corporation

Composite carbon fibers

A composite carbon fiber having a carbon fiber to which an amine-functionalized polymer is electro-grafted onto a surface thereof is provided. Electro-grafting the amine-functionalized polymer onto the surface of the carbon fiber results in a composite carbon fiber in which the polymer is covalently bonded to the fiber, and in which a significant number of reactive amine groups are available for subsequent reactions, such as for reacting with a resin matrix in the production of a fiber reinforced composite. ... Hexcel Corporation

Pultrusion apparatus

The present invention defines a pultrusion apparatus. The apparatus comprises a portion for receiving fibres, a portion for injecting resin into the fibres, a portion for impregnating the resin injected fibres, and a portion for shaping the impregnated fibres, wherein the fibres, following their passage through the receiving portion, converge in the resin injection portion to receive the resin and the resin flows outwards following injection as the fibres progress from the injection portion through the impregnation portion.. ... Hexcel Corporation

Composite material with thermoplastic toughened novolac-based epoxy resin matrix

Pre-impregnated composite material (prepreg) that can be cured/molded to form aerospace composite parts. The prepreg includes carbon reinforcing fibers and an uncured resin matrix. ... Hexcel Corporation

Composite material with thermoplastic toughened novolac-based epoxy resin matrix

Pre-impregnated composite material (prepreg) that can be cured/molded to form aerospace composite parts. The prepreg includes carbon reinforcing fibers and an uncured resin matrix. ... Hexcel Corporation

Improved fast cure epoxy resins and prepregs obtained therefrom

This invention relates to a composition comprising a semisolid epoxy resin containing a curative dispersed therein. The curative has a particle size such that at least 90% of the particles have a size below 25 pm at ambient temperature of 21° c., wherein the composition further comprises a diluent containing a particulate filler. ... Hexcel Corporation

09/21/17 / #20170267808

Resin composition

A resin composition for producing a composite, wherein the composition comprises (a) resin component comprising a glycidyl bisphenol z epoxy resin, and (b) a curing agent.. . ... Hexcel Corporation

09/21/17 / #20170266916

Composite materials

A curable sheet-like composite material comprising a layer of curable resin and at least one layer of structural fibres and comprising an outer backing layer of substantially resin-free material which is gas permeable but is substantially non-permeable with respect to the curable resin at room temperature.. . ... Hexcel Corporation

09/14/17 / #20170259512

Improved laminate

The use of a protection thread for the protection of a heat curable resin impregnated fibrous web. The web has weft and warp fibres, wherein the thread has a coefficient of thermal expansion within 10% of that of the heat curable resin impregnated fibres of the fibrous web, and wherein the coefficient of thermal expansion is measured using din 53752.. ... Hexcel Corporation

08/24/17 / #20170240714

A process for producing a composite article

Process for producing a composite material comprising depositing a prepreg containing a radiation initiated curing agent onto a mould using automated apparatus and applying heat and second source radiation to at least partially cure the prepreg at least simultaneously with the deposition of the prepreg. Also epoxy resin formulations of a mixture of a liquid epoxy resin and a solid or semi-solid epoxy resin containing a photoinitiator are used as the matrix in prepregs which are cured or partially cured by radiation to avoid the need for thermal cure in an oven. ... Hexcel Corporation

08/24/17 / #20170239894

Attachments

Mechanically attaching articles made from composites has problems due to the difference in properties of the composite in the x, y planar direction and the z perpendicular direction, this results in different properties between the composite and the attachment member such as differences in coefficients of thermal expansion which can weaken the joint further leading to differences in moisture uptake which can further reduce the strength and robustness of the joint. The invention relates to the selection of the position of a joint in order to reduce such problems and to operating the moulding process in a way that improves the provision of mechanical attachments such as bolt holes.. ... Hexcel Corporation

08/17/17 / #20170233900

Carbon fibers having improved strength and modulus and an associated method and apparatus for preparing same

. . The invention is directed to carbon fibers having high tensile strength and modulus of elasticity. The invention also provides a method and apparatus for making the carbon fibers. ... Hexcel Corporation

08/10/17 / #20170226274

Fast curing compositions

This invention relates to an epoxy resin formulation containing a curative that can be cured at 150° c. To 95% cure in no more than 150 seconds, and can be cured at 120° c. ... Hexcel Corporation

08/10/17 / #20170225411

Moulding material and method of forming same

A method of separating a composite material stack comprising multiple elements (12) in contact with one another is discloses. Each element (12) comprises reinforcement fibers and an uncured resin matrix, and the method comprises the steps of temperature treating the stack and/or applying a stress to the stack to separate the elements.. ... Hexcel Corporation

04/20/17 / #20170107409

Adhesive compositions

An adhesive composition comprising an aromatic epoxy resin, an epoxy resin rubber adduct, an amine curing agent; and optionally one or more of an oil absorbent, a corrosion inhibitor and a urone accelerator, wherein the adhesive composition is curable at 150° c. In no more than 210 seconds.. ... Hexcel Corporation

04/20/17 / #20170106620

Fire retarded aramid fiber-based honeycomb

An alternate resin-coated paper material for use in making honeycomb. The alternate resin-coated paper material is made from a paper that contains from 30 to 50 weight percent aramid fibers and from 50 to 70 weight percent of non-aramid fibers. ... Hexcel Corporation

04/13/17 / #20170100900

Non-woven fabrics

This invention relates to a non-woven fabric comprising spaced tows in a weft direction and spaced tows in a warp direction, wherein the weft tows and the warp tows are conjoined. The fabric may comprise a binder for conjoining the tows. ... Hexcel Corporation

03/16/17 / #20170072647

Method of manufacturing a composite part

A method of preparing a stringer (101) and panel (103) lay-up comprising the steps of providing a stringer preform (303), a panel preform (508), a filler (309) and a mould (307). The mould is adapted to define an inner surface of a stringer. ... Hexcel Corporation

02/09/17 / #20170036375

Multi-sectional composite tooling

A multi-sectional composite tooling for use in molding large composite structures. The tooling includes at least two tooling sections that are made from quasi-isotropic sheet molding compound. ... Hexcel Corporation

02/02/17 / #20170028673

Composite structure

A composite structure (10) comprising one or more electrically conductive pathways (12) and one or more isolators for isolating the pathways (12) from the bulk of the structure (10).. . ... Hexcel Corporation

01/26/17 / #20170025205

Process for making material with improved conductivity properties for the production of composite parts

A process for making a material adapted for the production of composite parts by a process in which a thermoplastic or thermosetting matrix is diffused within said material. The material includes at least one sheet of unidirectional carbon fibres associated on at least one of its faces with at least one conductive component associated or integrated with a permeable layer in a thermoplastic material or in a mixture of thermoplastic or thermosetting materials.. ... Hexcel Corporation








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