North Carolina State University

Other

Applied Radar, Inc.

University of Illinois

Korea University Research and Business Foundation

Allasso Industries, Inc.

Advanced Fluid Technologies, Inc.

University System of Maryland

Chappas, Walter

Pourdeyhimi, Behnam

Behnam Pourdeyhimi

Stephen R Sharp

Nataliya V Fedorova

Walter J Chappas

Trevor J Little

Hooman Vahedi Tafreshi

Ruben Guillermo Carbonell

Michael A Deaett

William H Weedon, Iii

H Troy Nagle

Richard H Guenther

James T Lowder

YuHuang Wang

Nagendra Anantharamaiah

Tae-Ho Kang

Carey Reid Merritt

Edward R Grant

Rory Holmes

Abhay Joijode

Suk Goo Yoon

Min Wook Lee

Sara Honarbakhsh

Michael Leonard Heller

Alvin Fortner

Ben Lambert

Alexander L Yarin

Burcak Karaguzel

Suman Sinha-Ray

Angelo Corino

Harry M Barnes, Iii

Michael D Dixon

Benoit Maze

John Fry

Steve A Lommel

Zhiwei Peng

Beibei Xu

A composite sheet comprising two or more layers is described where the degree of abrasiveness of can be controlled. The sheet can comprise partially or wholly biodegradable or compostable materials or blends thereof. Methods of preparing the composite sheets are also described.

Method of preparing a composite sheet

The present invention is directed toward a method of making a composite structure including receiving a substantially planar nonwoven spunbond layer including a plurality of multicomponent fibers, thermally bonding the nonwoven spunbond layer at a first bond temperature, laying down a meltblown layer on top of the thermally bonded nonwoven spunbond layer to form an intermediate structure, and thermally bonding the intermediate structure at a second bond temperature to form a final composite structure. Composite structures including a spunbond layer and a meltblown layer, wherein the composite structure has a tensile strength of at least about 130 N/2.54 cm in both machine and cross directions, a tear strength of at least 3.0 N/2.54 cm, and an LRV of about 2.0 or higher are also provided herein.

High strength nonwoven barrier material

The invention provides polymer-grafted and functionalized nonwoven membranes adapted for use in bioseparation processes, the membranes including a nonwoven web of polyester fibers having an average fiber diameter of less than about 1.5 microns, each of the plurality of polyester fibers having grafted thereon a plurality of polymer segments constructed of a methacrylate polymer, each polymer segment carrying a functional group adapted for binding to a target molecule. The invention also provides a method of bioseparation comprising passing a solution comprising the target molecule, such as a protein, through the nonwoven membrane of the invention such that at least a portion of the target molecule in the solution binds to the nonwoven membrane. A method for preparing a polymer-grafted and functionalized nonwoven membrane adapted for use in bioseparation processes is also provided.

Grafted islands-in-the-sea nonwoven for high capacity ion exchange bioseparation

The present disclosure provides a depth filter medium comprising at least one elastomeric nonwoven web strengthened by combination with one or more structural support layers. The resulting material is particularly useful in the field of filtration, wherein particulates captured within the elastomeric nonwoven web can be readily released, such as by applying pressure to the web through backwashing. The elastomeric nonwoven web advantageously can stretch under such pressure and return substantially to its original structure and shape upon the removal of the pressure, rendering the filter available for reuse.

Elastomeric depth filter

Methods of making an artificial leather substrate from leather waste (e.g., shavings, such as wet blue, and/or pulverized trim scrap) and products formed using the artificial leather substrate are disclosed. In one example, the artificial leather substrate comprises a composite web comprising leather waste mixed with a lightweight web, a lightweight web atop the composite web, and another lightweight web atop the first lightweight web. A method of making the artificial leather substrate includes the steps of mixing one or more fiber components, leather shavings, and/or pulverized leather trim scrap to form the composite web; needle punching the composite web; and bonding the composite web.

Methods of forming an artificial leather substrate from leather waste and products therefrom

The present invention relates to an electrospinning device. The electrospinning device may apply the force of a supersonic flow acting at a predetermined angle with respect to an electrostatic force on a fiber discharged from an electrospinning nozzle to cause shearing stress on the fiber, thereby providing fibers having a very small diameter and collecting fibers having a finer diameter. Also, the electrospinning device may collect finer and more uniform fibers by adjusting the relative positions of the electrospinning nozzle for discharging the fiber and a gas spray nozzle for spraying a gas.

Electrospinning device

This disclosure relates to articles that comprise polymeric winged fibers. The winged fibers have a high surface area because of their structure, which includes a core surrounded by a plurality of lobes. Channels of one micron or less in width are formed between adjacent lobes to form paths for the capture and/or transport of gases, liquids or particles. The winged fibers are assembled in woven or non-woven fabrics for use in wipes, absorbent pads, composite structures, apparel, outdoor wear, bedding, filtration systems, purification/separation systems, thermal and acoustic insulation, cell scaffolding, and battery membranes.

Articles containing woven or non-woven ultra-high surface area macro polymeric fibers

A biodegradable delivery system for actives such as pharmaceutical drugs. The delivery system includes actives infused into the capsid of a purified plant virus. The loaded capsids are embedding in electrospun biodegradable polymer fibers, forming a nonwoven fabric.

Biodegradable non-woven fabric having plant virus encapsulated actives for drug delivery

The subject matter disclosed herein relates generally to fabrics composed of micro-denier fibers wherein said fibers are formed as bicomponent fibrillated fiber. The energy is sufficient for fibrillating as well as entangling (bonding) the fibers. These fabrics can be woven or knitted and made from made from bicomponent islands in the sea fibers and filaments or can be nonwovens and formed by either spunbonding or through the use of bicomponent staple fibers formed into a web by any one of several means and bonded similarly to those used for the spunbonded filament webs.

High strength, durable micro and nano-fiber fabrics produced by fibrillating bicomponent islands in the sea fibers

The present invention is directed to a high surface area fibers and an improved filter composite media made from the same. More specifically, the composite media preferably comprises a winged-fiber layer having high surface area fibers for increased absorption and strength and a meltblown layer for additional filtration. In one preferred embodiment the high surface area fibers have a middle region with a plurality of projections that define a plurality of channels, which increases the surface area of the fiber. In one preferred embodiment, the high surface area fiber has a specific surface area of about 140,000 cm/g or higher and a denier of about 1.0 to about 2.0. The high surface area fiber of the present invention is made using a bicomponent extrusion process using a thermoplastic polymer and a dissolvable sheath.

Composite filter media with high surface area fibers

The invention provides methods for the preparation of nonwoven spunbonded fabrics and various materials prepared using such spunbonded fabrics. The method generally comprises extruding multicomponent fibers having an islands in the sea configuration such that upon removal of the sea component, the island components remain as micro- and nanofibers. The method further comprises mechanically entangling the multicomponent fibers to provide a nonwoven spunbonded fabric exhibiting superior strength and durability without the need for thermal bonding.

Micro and nanofiber nonwoven spunbonded fabric

A microwave patch antenna comprising: a plurality of conductive antenna patterns; a plurality of groundplanes; a plurality of feed elements; a plurality of feed slots to allow feed elements to pass through the non-woven dielectric spacers; and a plurality of dielectric separator layers comprised of corrugated non-woven fabric as necessary to form a patch antenna construction.

Non-woven textile microwave patch antennas and components

The invention provides durable nonwoven fabrics comprising staple fibers. Methods of preparing durable nonwoven fabrics based on staple fibers are also provided. The methods can include the steps of at least one of needle punching and hydroentangling. The durable nonwoven fabric can be subjected to additional bonding techniques, such as resin bonding and/or thermal bonding. The durable nonwoven fabrics of the invention provide improved durability over conventional nonwoven fabrics. Further advantages of the inventive nonwoven fabrics include maintaining the smooth surface qualities of the fabric and desirable feel of the fabric even with the enhanced durability. The inventive nonwoven fabrics can also be subjected to additional post-processing techniques that conventional nonwoven fabrics would otherwise be unable to withstand. Further, inks and/or dyes can more readily become adhered to the smooth nature of the surfaces of the inventive durable nonwoven fabrics.

Staple fiber durable nonwoven fabrics

The present invention is directed to a high surface area fiber and textiles made from the same. In one preferred embodiment the fiber has a middle region with a plurality of projections that define a plurality of channels, which increases the surface area of the fiber. In one preferred embodiment, the fiber has a specific surface area of about 140,000 cm/g or higher and a denier of about 1.0 to about 2.0. The fiber of the present invention is made using a bicomponent extrusion process using a thermoplastic polymer and a dissolvable sheath.

High surface area fiber and textiles made from the same

Growing community of inventors

Cary, NC, United States of America

Behnam Pourdeyhimi