Honeywell International Inc.

Thomas Y-t Tam

Huy Xuan Nguyen

John Armstrong Young

Charles Arnett

Qiang Zhou

Chok Bin Tan

Conor J Twomey

Samir Z Abdalla

Thomas Potrawa

Alfred Siggel

Jiunn-Yow Chen

Sheldon Kavesh

Lori L Wagner

Brian H Waring

Alfred L Cutrone

Brian Duane Arvidson

Alexander Lobovsky

James G Neal

Mark Tallent

John Hermes

Ronald A Moore

John D Brodie

Hu Zhixuan

Hong-Jian J Sha

A method of making colored multifilament ultrahigh molecular weight polyolefin yarn, including feeding at least one substantially untwisted multifilament ultrahigh molecular weight polyolefin yarn, coating the substantially untwisted multifilament yarn with a coating composition comprising colorant in a thermoplastic resin carrier, with the coating composition being adhered to the filaments of the multifilament yarn, and heating the multifilament yarn while stretching the yarn without fusing of the filaments of the multifilament yarn. The resultant yarn is a colored multifilament yarn having improved color-fastness. The thermoplastic resin has a lower melting point than the filaments of the multifilament yarn. Preferably, a plurality of the substantially untwisted multifilament ultrahigh molecular weight polyolefin yarns are processed together. Articles formed from the colored multifilament yarns may be prepared and subjected to a heating step to provide a colored surface coating of the thermoplastic resin over the article.

Method of making colored multifilament high tenacity polyolefin yarns

Colored monofilament ultrahigh molecular weight polyolefin lines, and methods of making such colored lines are disclosed. The colorant can result in a product that provides a visual indication of metered length. When the colorant has a luminescent response to ultraviolet or infrared light, a line can change color based on the environmental conditions to which it is exposed. Methods of making the line can include feeding a substantially untwisted multifilament ultrahigh molecular weight polyolefin yarn; coating the substantially untwisted multifilament yarn with at least one colorant; twisting the coated multifilament yarn; and heating the twisted multifilament yarn to a temperature and for a time sufficient to at least partially fuse adjacent filaments together while stretching the yarn.

Colored lines and methods of making colored lines

A robust process for the continuous preparation of solutions of high molecular weight UHMW PO that is capable of producing strong materials at high production capacity, is conservative of capital and energy requirements, and the articles made therefrom.

High molecular weight poly(alpha-olefin) solutions and articles made therefrom

A method of making colored monofilament ultrahigh molecular weight polyolefin fishing line, comprising the steps of feeding a substantially untwisted multifilament ultrahigh molecular weight polyolefin yarn; coating the substantially untwisted multifilament yarn with a colorant; twisting the coated multifilament yarn; and heating the twisted multifilament yarn to a temperature and for a time sufficient to at least partially fuse adjacent filaments together while stretching the yarn. The resultant product is a colored monofilament fishing line that has improved color-fastness and abrasion resistance.

Method of making monofilament fishing lines of high tenacity polyolefin fibers

This invention provides security articles comprising fibers, threads and fiber sections ('dots') possessing multiple verification characteristics. The fibers possess unique and difficulty duplicated combinations of complex cross-sections, components, and multiple luminescent responses. The many verifiable characteristics of the security fibers, threads and dots provide high levels of protection against fraudulent duplication of articles in which they are incorporated. The manifold security features provide means of tailoring specific identity characteristics for specific use and users.

Security articles

A process for preparing ultra-high molecular weight poly(alpha-olefin) (UHMWPO) multi-filament yarns having improved tensile properties at higher productivity. The process includes drawing a solution yarn, then drawing a gel yarn and then drawing a dry yarn continuously in sequence to form a partially oriented yarn, winding up the partially oriented yarn, unrolling the yarn, drawing the partially oriented yarn to form a highly oriented yarn, cooling the highly oriented yarn under tension and winding up the highly oriented yarn.

Process for the preparation of UHMW multi-filament poly(alpha-olefin) yarns

A process for preparing ultra-high molecular weight polyethylene (UHMWPE) multi-filament yarns having improved tensile properties and the yarns and articles thereby produced.

High tenacity polyethylene yarn

Methods for preparation of high strength yarns having superior yarn-to-yarn uniformity of denier, tenacity and tensile modulus and uniform unidirectional fibrous sheets. Ballistic composites prepared from these yarns and fibrous sheets have improved uniformity of ballistic resistance. The drawn yarns, fibrous sheets and articles made therefrom are more uniform than the prior art and are useful in applications requiring impact absorption and ballistic resistance, such as body armor, helmets, breast plates, helicopter seats, spall shields; composite sports equipment such as kayaks, canoes, bicycles and boats; and in fishing line, sails, ropes, sutures and fabrics.

Process for making uniform high strength yarns and fibrous sheets

A process for drawing essentially diluent-free gel-spun polyethylene multi-filament yarns in a forced convection air oven and the drawn yarns produced thereby, The process conditions of draw ratio, stretch rate, residence time, oven length and feed speed are selected in specific relation to one another so as to achieve enhanced efficiency and productivity. The drawn yarns are useful in armor, composites, fishing line, ropes, sutures, fabrics and other applications.

Process for drawing gel-spun polyethylene yarns

Drawn multi-filament polyethylene yarns and articles thereof having unique signatures in dynamic mechanical analysis reflective of unique microstructures, and having superior ballistic resistant properties.

Drawn gel-spun polyethylene yarns

High strength polyethylene yarns useful in ballistic-resistant, cut-resistant and other applications, fabrics produced from these yarns and the methods by which the yarns and fabrics are made. An untwisted yarn of the invention comprises a plurality of filaments in essentially parallel array and from about 0.5 to 5 weight percent of a water-dispersible binder material covering less than half the surfaces of the filaments. The yarn has a tenacity greater than about 17 g/d, a tensile modulus greater than about 300 g/d, fewer than 20 entanglements/meter in a scoured state and a width less than given by the formula&#x2266;0.055&#x221a;where W is the yarn width in millimeters under a tensile load of 0.01 g/d measured on a flat surface and d is the yarn denier.

Growing community of inventors

Richmond, VA, United States of America

Thomas Y-t Tam