Hercules Corporation

Fiberco, Inc.

Fibervisions L.p.

Randall E Kozulla

Rakesh K Gupta

Richard J Legare

James D Geiman

Robert G MacLellan

James H Harrington

Walter J Freeman

Edward J Engle

Carl J Wust

Elizabeth L Fahey

John F L Newport

John F Newport

Process of producing skin-core fibers and the resulting fibers and nonwoven materials and articles wherein the fibers are composed of a polymer blend of a polyolefin and polymeric bond curve enhancing agents, such as ethylene vinyl acetate polymers.

Polypropylene fibers and items made therefrom

A yarn comprising linear low density polyethylene fiber and nonmelting fiber or fiber having a melting point higher than the linear low density polyethylene fiber, and structures made therefrom.

Yarns containing linear low density polyethylene fibers

Process of making polypropylene fibers

Process of producing a polypropylene containing fiber and the resulting fiber and non-woven articles. The process involves the extruding of polypropylene containing material having a broad molecular weight distribution to form a hot extrudate having a surface, and quenching the hot extrudate in an oxidative atmosphere so as to effect oxidative chain scission degradation of the surface to obtain a fiber having a higher average melt flow rate as compared to an average melt flow rate of an inner, non-degraded portion thereof, and containing at least 7 percent of molecules having a molecular weight greater than 5.times.10.sup.5.

Process for producing fibers for high strength non-woven materials

A laminate comprising (1) at least one layer of a textile structure comprising linear low density polyethylene fiber and (2) at least one layer of a textile structure comprising nomnelting fiber or fiber having a melting point higher than the linear low density polyethylene fiber, needlepunched and thermally consolidated together.

Laminates comprising textile structures comprising linear low density

A fabric comprising a warp yarn and a filling yarn, wherein the filling yarn comprises linear low density polyethylene fiber and the warp yarn comprises nonmelting fiber or fiber having a melting point higher than the linear low density polyethylene fiber.

Fabrics comprising filling yarns comprising linear low density

A fiber comprising at least about 80% by weight linear low density polyethylene and having a melting point &gt;109.degree. C. is disclosed. Also disclosed are thermally consolidated fiber structures comprising (1) at least about 3% by weight, based on the total weight of the structure, of lower melting binder fibers comprising at least 80% by weight linear low density polyethylene, and (2) not more than 97% by weight, based on the total weight of the structure, of nonmelting fibers, or fibers having a melting point higher than the linear low density polyethylene fibers. The fiber structures can be in the form of multifilament yarns, woven or nonwoven textile fabrics, carpets, or laminates. The linear low density polyethylene binder fibers in the structures preferably have a melting point &lt;109.degree. C.

Textile structures containing linear low density polyethylene binder

A gamma-sterilizable barrier fabric comprises (1) at least one layer of a gamma-sterilizable nonwoven material comprising cardable multiconstituent staple fibers, at least 50% by weight of the nonwoven material comprising a gamma-sterilizable polymer, and (2) at least one layer of gamma-sterilizable barrier material selected from film, wet-laid fabrics, and melt-blown webs, at least 50% by weight of the barrier material comprising a gamma-sterilizable polymer.

Gamma-sterilizable barrier fabrics

Multiconstituent fibers having a dominant continuous linear low density polyethylene phase, and one or more discontinuous phase polymers, dispersed through the dominant continuous phase in the form of domains. The indicated discontinuous phases polymers are chosen from among polypropylene and poly(propylene-co-ethylene) copolymers.

Multiconstituent fibers, and nonwoven structures of such fibers

High strength spun melt fiber, preparation thereof utilizing threadline oxidative chain scission degradation of hot fiber spun from polymer component(s) having a broad molecular weight distribution in conjunction with a delayed quench step, and corresponding nonwoven material obtained therefrom.

High thermal strength bonding fiber

Radial differential melt flow rate melt spun fiber, preparation thereof utilizing threadline oxidative chain scission degradation of hot fiber extruded from polyolefin polymer component(s) having a broad molecular weight distribution in conjunction with a delayed or slow quench step, and corresponding high strength nonwoven material obtained therefrom.

Process of making high thermal bonding strength fiber

High strength spun melt fiber is prepared by utilizing threadline oxidative chain scission degradation of hot fiber spun from polymer component(s) having a broad molecular weight distribution in conjunction with a delayed quench step.

Growing community of inventors

Social Circle, GA, United States of America

Randall E Kozulla