E.i. Dupont De Nemours and Company

Conoco Inc.

Conocophillips Company

Roger A Ross

John A Rodgers

Uel D Jennings

Daniel F Rossillon

Ronald E Steele

Frank H Overton

Francis J Malone, Jr

Walter John Jaegge

Donald Rittler Strachan

Dane R Boyington

The present invention provides a process and apparatus for blow spinning continuous fibers. The novel process utilizes a tensioning device to preclude slack in the fiber. The present invention also provides novel fiber products which utilize continuous fibers prepared by a blow spinning process.

Process and apparatus for collecting continuous blow spun fibers

A coupled spin-draw process for making a fully-oriented nylon yarn including extruding molten nylon polymer with a selected RV through a spinneret and cooling to produce a yarn. The yarn is withdrawn from the quench zone with a feed roll rotating at a speed of at least 4500 mpm. The process further includes cold drawing followed by relaxing the yarn using a steam intermingling jet and then winding up.

High speed process for making fully-oriented nylon yarns and yarns made

The present invention provides a process and for producing a single layer batt of fibers prepared by multiple die tips. The present invention also provides a novel multiple tip blow spinning die.

Process for forming a single layer batt from multiple curtains of fibers

The present invention provides an apparatus for producing a single layer batt of fibers prepared by multiple die tips. The present invention also provides a novel multiple tip blow spinning die.

Apparatus for forming a single layer batt from multiple curtains of

The present invention provides a blow spinning die particularly suited for spinning solvated pitch into fibers having a random cross-sectional structure. Additionally, the present invention provides a process for blow spinning fibers from solvated pitches. The present invention also provides pitch fibers having a high energy internal molecular structure. Finally, the present invention provides carbon fibers which have a non-radial internal structure.

Blow spinning die and process for spinning carbon fibers from solvated

Use of a ribbon shaped flow configuration at the entrance to a round spinneret used for spinning carbon fibers from mesophase pitch promotes the formation of random microstructure and prevents formation of axial cracking in the fibers.

Pitch carbon fiber spinning apparatus

High speed process for making fully-oriented nylon yarns

Pitch carbon fiber spinning process

High thermal conductivity mesophase pitch based carbon fibers are made using a spinneret which has a sharply angled tapered region at the inlet to the spinneret capillary.

High thermal conductivity carbon fibers

Small diameter high strength carbon fibers are produced in a process in which the spinneret has a small diameter, the spinneret capillary temperature is at least 10.degree. C. higher than the predicted spin temperature of the pitch and the pitch flows through a high aspect ratio opening upstream of the spinneret.

Method of making small diameter high strength carbon fibers

The sticking between an array of melt spun eccentric bicomponent filaments converged together into yarn is avoided by selecting the filaments being converged so that the thin sheath regions of the filaments do not contact one another and conducting the convergence in two steps if the number of filaments required for the yarn is too great for convergence in one step while avoiding the aforesaid contact.

Growing community of inventors

Chattanooga, TN, United States of America

Roger A Ross