E.i. Dupont De Nemours and Company

Kenneth Stephen Freund

Andrew James Giles

Todd A McCoy

James Stephen Bailey

Phillip Osborne Staples

Lyles Howard Sowell

Leonard Ray Tucker

Elizabeth L Frisbie

Robert E Wojcik

A process of feeding carded fiber to an airlay and particularly to combining carding technology with airlay technology. A carding machine portion is arranged to card fiber while a disperser-roll in the airlay portion picks the individualized carded fibers from a tool bed roll and centrifugally doffs them into an air stream. As such, airlays will be able to handle longer fiber lengths which conventional airlay equipment is unable to handle or satisfactorily open up. Further, an improved process for doffing fiber from a airlay machine and particularly centrifugally doffing fiber from a carding machine.

Feeding carded fiber to an airlay

An apparatus for distributing fiber from a carding machine to an airlay wherein the apparatus comprises a system of ducts or conduits for controlling air flow having a curved top wall and a curved bottom wall that define a converging passageway and the distance between the walls is defined by an exponential equation.

Air handling system for an advanced web former

A device and process for dividing a pneumatic flow of fiber into a plurality of streams of pneumatically-conveyed fiber which aid in distributing the fiber more uniformly across an area such as a fiber bin.

Distribution of fiber from pneumatic fiber conveying system

This invention relates to improved aerodynamics in dry fiber web forming machines and particularly to airlays which form high quality webs. The invention includes a disperser roll for feeding fibers into the air stream and a second roll opposite to the disperser roll for balancing the disruptive effects of long stationary walls and rotating members in the air duct. In one alternative arrangement of the invention, the fibers are also fed to the air stream by a second disperser roll opposite the first disperser roll.

Method and apparatus for improving the air flow through an air duct in a

This invention relates to the creation of a different styled batt from tufts of fiber for delivery to textile machinery. In particular, the batt formed in the style of this invention is particularly suited for delivery to a carding machine. Carding machines are able to more fully utilize fiber processing capacity with lower risk of becoming overloaded because the tufts are less able to be pulled out of the batt intact but are held back allowing for the lickerin roll or other feed arrangement to pull fiber out of the batt in a more continuous and uniform manner.

Chute feeder for textile processing equipment

A method to determine differential filter pressure caused by filter pluggage in a high pressure liquid system operated by a computer-operated control valve without the need for a pressure sensor coupled to the filter by corerlating the percent the control valve is open with the differential pressure of the filter. A signal is provided when the percentage of time the control valve is open exceeds a predetermined time and the filter is replaced in response to the signal.

Method of determining filter pluggage by measuring pressures

A crosslapper is disclosed utilizing at least one foraminous transporting belt to permit rapid escape of entrained air during fast operation of wide-bed machinery.

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Gallatin, TN, United States of America

Kenneth Stephen Freund