W. L. Gore & Associates, Inc.

Gore Enterprise Holdings, Inc.

Velocys Technologies Limited

Other

Velocys Corp.

The Procter & Gamble Company

John W Dolan

Raymond B Minor

John W Spencer, Jr

Brad F Abrams

David D McClanahan

Roger Allen Harris

Andre Peter Steynberg

Ivan Phillip Greager

George M Roberts

Jasmeer Jaichland Ramlal

Thomas Patrick Kelmartin, Jr

Dennis Parker

Gordon L McGregor

John Edward Bacino

Thomas Michael Gray

Deborah A Grofcsik

Steven Claude LeViness

David Dean McClanahan

Richard L Baillie

William Hammond Wiley

James H Chastain

David J Mills

Michael Wendlandt

Wolfgang Bürger

Rickey I Hill

Robert M Russell

Alex R Hobson

Matthew J Murphy

Rachel Radspinner

Ivan Philip Greager

Donald L Hollenbaugh, Jr

James Todd Walter

Shekoufeh Shahkarami

Michael Allen Zumbrum

Stephen Claude LeViness

Joseph Krummel

Michael F Altman

Kim E Ritchie

Deborah A Grofcisk

Richard Wilson

John W Spener, Jr

Charles E Singleton

Loretta A Whelan

James Carothers

Harold J Pickar, Sr

Steven Claude Levinness

Michael Zumbrum

Shehkoufeh Shahkarami

A jacket for an elongated assembly is disclosed. The jacket, which may be a tubular shape or sheet, comprises a film layer to surround a core member of the elongated assembly, wherein the film layer has a first surface to be arranged abutting the core member in a non-bonded relationship; a braided, woven, or warp-knit layer comprising high-melt filament having a titer from 30 to 800 denier; and a bonding region between the braided, woven, or warp-knit layer and a second surface of the film layer, opposing to the first surface, to adhere at least a portion of the high-melt fibers. The jacket may further comprise an inner film layer in a non-bonded relationship with the film layer.

Abrasion resistant and flexible cable jacket systems

The present invention relates to a process for producing a fluoropolymer article having a high surface roughness and high coarseness which comprises the following steps: The present invention further relates to a fluoropolymer article obtainable by a process according to the invention. The present invention furthermore relates to a fiber comprising, or consisting of, a fluoropolymer having a surface roughness expressed as a peak to valley distance (Rt) greater than 10 micrometer and/or an average surface roughness (Ra) greater than 1.5 micrometer. The present invention furthermore relates to a membrane comprising, or consisting of, a fluoropolymer having a coarseness index &#x3c1;/EBP of at least 0.3, an air permeability of 15 ft/ft/min or higher and a node aspect ratio of below 25.

Processes for forming fluoropolymer articles

The present invention provides an improved process for removing heat from an exothermic reaction. In particular, the present invention provides a process wherein heat can be removed from multiple reaction trains using a common coolant system.

Process of removing heat

Fluoropolymer articles having a high surface roughness and high coarseness are provided. In one embodiment, a fiber is provided that has a surface roughness expressed as a peak-to-valley distance (Rt) greater than 10 micrometers and an average surface roughness (Ra) greater than 1.5 micrometers. In another embodiment, a membrane having a coarseness index &#x3c1;/EBP of at least 0.3 g/cm/psi and an air permeability of 15 ft/ft/min or higher is provided. The fluoropolymer articles are produced by a process that includes forming a paste-formed fluoropolymer product at a temperature lower than 50&#xb0; C., densifying the paste-formed product, and then stretching the dens Pied paste-formed fluoropolymer product in at least one direction. In exemplary embodiments, the fluoropolymer may be polytetrafluoroethylene (PTFE), a modified PTFE, a TFE copolymer, a fluorothermoplastic, a fluoroelastomer, or combinations thereof.

Fluoropolymer articles having a high surface roughness and high coarseness

An insert for a protective garment, the insert having a fabric having at least 45 percent by weight of expanded polytetrafluoroethylene fibers, the fabric having a 2-Grain V-50 Fragmentation Resistance of at least 700 feet per second and a FAST-2 Bending Rigidity of less than 40 microNewtonmeters.

Protective undergarment

A dental cleaning article comprising a band of expanded fluoropolymer that is highly distensible at room temperature, such that it can be stretched from a first state to a second state is described. The diameter of the band of expanded fluoropolymer may be increased by stretching by, in some embodiments, two times or more the original first state diameter. Likewise the cross sectional area of the band of expanded fluoropolymer may be reduced upon stretching to less than one quarter the first state cross sectional area. The band of expanded fluoropolymer provides the user with the ability to stretch the band a desired amount, such that they may more effectively clean between their teeth. Furthermore, the band may be regular or irregularly shaped, and in some embodiments may comprise higher density regions.

Stretch floss band

A dental floss comprising a porous PTFE fiber having a density of less than about 0.7 g/cc. The inventive floss is abrasion resistant, grippable and has a soft feel to the hands and a rough feel in the mouth. The floss is made by an extrusion process with non-contact heating during subsequent expansion with amorphous locking.

Dental floss having low density and method of making same

A device for severing and restraining dental floss that has a blade with a restraining side and a cutting side, which can be formed by slanting the blade or otherwise providing a narrow pinching portion on one side of the blade to restrain the floss.

Cutting device for dental floss

A dental floss holder including a pair of arms, each arm having a middle portion and first and second opposite end portions. The first end portion of each arm curves outwardly away from its respective middle portion wherein the middle portions of the arms are positioned proximate one another so as to define a pivot. The second end portions are movable between a first position in which the first end portions of the arms diverge away from one another, and a second position in which the first end portions are moved toward one another. Dental floss material has one end secured to the first end portion of one arm and an opposite end secured to the first end portion of the other arm. The dental floss material has a first tension when the first end portions are in their spaced apart position and a second tension when the first end portions are moved toward one another, said first tension being greater than the second tension. Also disclosed is a filament, such as a dental floss, that contains fumed silica. The dental floss may be used alone or with the disclosed dental floss holder.

Dental floss holder and improved dental floss

A PTFE fiber that is adapted to be sewn at high speeds. The fiber has a toughness greater than about 0.36 grams per denier (g/d). A range for the toughness is from about 0.36 to about 1.01 g/d, with a preferred range being from about 0.50 to about 0.80 g/d. The toughness of the inventive PTFE fiber is most preferably about 0.60 g/d. The inventive fiber has a peak engineering stress greater than about 1.6 g/d and a break strain greater than about 15.5 percent. A preferred range for the peak engineering stress is from about 3.0 g/d to about 5.0 g/d, and a preferred range for the break strain is from about 20 percent to about 50 percent. Most preferably, the peak engineering stress is about 4.4 g/d, and the break strain is about 24 percent. In another aspect, this invention provides a process for making a fiber that involves providing a PTFE fiber and heating the PTFE fiber to a temperature of from about 300.degree. C. to about 500.degree. C., while overfeeding the PTFE fiber at an overfeed of up to about 70 percent. A preferred range for the temperature is from about 350.degree. C. to about 450.degree. C., and a preferred range for the overfeed in the overfeeding step is from about 10 percent to about 20 percent. Most preferably, the temperature in the heating step is about 400.degree. C. and the overfeed in the overfeeding step is about 15 percent. The PTFE fiber may be used as a filament for an improved dental floss, and is also suited for an improved bearing material.

Polytetrafluoroethylene fiber

Growing community of inventors

Boothwyn, PA, United States of America

John W Dolan