E.i. Dupont De Nemours and Company

Kalika Ranjan Samant

Joseph J Duffy

Maurice C Todd

Jerry F Potter

Bryan Benedict Sauer

Elwood A Roth

Peter Popper

Minshon J Chiou

George K Kodokian

Joseph D Trentacosta

Jeffrey L Kennard

Wae-Hai Tung

Lap-Tak Andrew Cheng

Gregory Paul Weeks

Paul W Yngve

James K Odle

Vijayendra Kumar

Sassan Hojabr

Rashi Akki

Jing-Chung Chang

Caroline Tjhen Shibata

Carmen Anoish Covelli

Benjamin Weaver Messmore

Richard E Thek

Carl Frederick Morin

James C Davis

Jing-chung Chang

Paul Ellis Rollin

Paul Ellis Rollin Jr

A penetration resistant article with an area density less than 1.5 lb/ftmade of a plurality of fibrous fabric layers that have applied thereto about 1 to 8 percent by weight of a polymer having a glass transition temperature in the range of minus 40 to about 0&#xb0; C. and a zero shear melt viscosity 2&#xd7;10to about 10poise at 20&#xb0; C.

Fabrics with strain-responsive viscous liquid polymers

A process of treating a woven fabric by applying to the fabric a viscous polymer in a 5 to 40 wt % solution with a solvent, wherein the polymer has a Tin the range of about minus 40 to about 0&#xb0; C. and a zero shear melt viscosity of about 2&#xd7;10to about 10poise when measured at 20&#xb0; C. and then evaporating the solvent such that the polymer only partially penetrates the fabric and penetrates to in and between fiber bundles before the polymer solidifies.

Method for treating fabric with viscous liquid polymers

A fibrous structure made from a fiber and about 1 to about 15 wt % of a high viscosity polymer that has a glass transition temperature of about minus 40 to about 0&#xb0; C. and useful for making bullet resistant articles.

Polymeric additives for enhancement of ballistic performance in fibrous structures

This invention provides moisture stable tuftstring carpet assemblies. The pile surface structure comprises a moisture stable backing substrate, a plurality of elongated pile articles each comprising an elongated, moisture stable support strand having bonded thereto a plurality of 'U' shaped bundles of multifilament yarn. The pile articles are bonded to the backing substrate. Different backing substrates and support strands may be used.

Moisture stable tuftstring carpet

A method and apparatus for making a carpet formed from a plurality of tuftstrings bonded to a backing. Methods and apparatii for accurately positioning the tuftstring and ultrasonically bonding multiple tuftstrings to the backing is disclosed.

Method and apparatus for making a tuftstring carpet

This invention is a moisture-stable, flexible, structural adhesive strand which is suitable for use in the manufacture of an elongated pile article. The strand of this invention is comprised of a core of reinforcing multifilaments and a sheath of moisture-sensitive thermoplastic resin. The cross-sectional area ratio of reinforcing filaments to thermoplastic resin is in the range of about 0.04 to less than 0.3.

Moisture-stable flexible structural adhesive strand

A method of producing crimped tow by continuously feeding a tow against an adjustable counter pressure means; the tow is maintained at an average predetermined thickness and steam enters the chamber and is exhausted from the chamber in a manner to provide uniform heating of the tow to provide a fiber that is uniformly annealed as determined by measuring light reflectance for yarn dyed with a structural sensitive Milling Blue 'B' dye or shrinkage uniformity determined by thermal analysis.

Method for heating crimped fibers and product thereof

Controlling the cross-sectional characteristics of moving tow lines by providing monitors and positioning devices so as to improve stuffer box crimp uniformity. The mass distribution profile of a filamentary tow band is continuously measured as a function of the width of the band, and the information obtained is used to change the position of the band when a deviation from a predetermined value is noted. Positioning devices are used to carry out the movement or adjusting of the band in accordance with a signal so as to correct the deviation and present to a crimping apparatus, such as a stuffer box crimper, a band having a uniform mass distribution profile.

Process and apparatus for tow cross-section measurement and control

Growing community of inventors

Hockessin, DE, United States of America

Kalika Ranjan Samant