E.i. Dupont De Nemours and Company

E. I. Du Pont Nemours and Co.

Clifford K Deakyne

Gregory Paul Weeks

Hiroyuki Suzuki

Minshon J Chiou

Mark Allan Lamontia

John Gerard Lavin

J David Booze

Brian R France

James E Weishampel

Mark R Schmeckpeper

Nathan W Love

A hybrid cord formed from a plurality of component plies wherein at least two of the plies are of unequal ply length regardless of the twist of the plies and at least one of the plies has a length that is from 1 to 50 percent longer than the other plies and a method of providing a cord with predetermined twist and component ply lengths.

Unbalanced hybrid cords and methods for making on cable cording machines

This invention pertains to an article for use in body armor, comprising a plurality of discrete sheet subassemblies contoured to the shape of a female breast arranged in a stack, without bonding, such that the breast contours are positioned on top of each other, each of the subassemblies comprising at least two nonwoven layers of high tenacity yarns such as par-aramid, a binder and a resin.

Shaped body armor and method of making

Disclosed herein are processes for making a consolidated or densified composite article comprising polymer, particularly fluoropolymer, and oriented carbon fiber, which provides suitability for use in chemical-mechanical applications.

Composite with low content of metal

A process for the production of structural and semi-structural composites formed by compressing planar layers of nonwoven preform materials formed from aqueous blends of reinforcing fibers and thin thermoplastic fluoropolymer flake. The flakes have an irregular periphery with microfibrils extending therefrom, having a Canadian Standard Freeness greater than 800. The planar layers which are unconstrained in the in-plane direction are preconsolidated by heating the layer to above the melting point of the fluoropolymer, the applying pressure normal to the plane of the layer causing the fluoropolymer to flow thus orienting the fibers in the plane of the layer. The composites are useful in applications which require higher strength and/or modulus, and where chemical and/or heat resistance is needed, as in chemical processing.

Fluoropolymer material

A process for the production of structural and semi-structural composites formed by compressing planar layers of nonwoven preform materials formed from aqueous blends of reinforcing fibers and thin thermoplastic fluoropolymer flake. The flakes have an irregular periphery with microfibrils extending therefrom, having a Canadian Standard Freeness of from 800 to 883. The planar layers which are unconstrained in the in-plane direction are preconsolidated by heating the layer to above the melting point of the fluoropolymer, the applying pressure normal to the plane of the layer causing the fluoropolymer to flow thus orienting the fibers in the plane of the layer. The composites are useful in applications which require higher strength and/or modulus, and where chemical and/or heat resistance is needed, as in chemical processing.

Process for making fluoropolymer composites

A three-dimensional arrangement of carbon fibers made from mesophase pitch are used to reinforce polymer resins to form a composite material. The composite material exhibits high thermal conductivity values on all axes through the composite.

Thermal conductive material

A process for preconsolidating a planar porous fiber-thermoplastic resin layer which is unconstrained in the inplane directions by heating the layer to above the melting point of the resin, then applying pressure to the plane of the layer causing resin flow, thus orienting the fibers in the plane of the layer.

Growing community of inventors

Wilmington, DE, United States of America

Clifford K Deakyne