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

Patent metadata

Field	Value
Publication number	US-9284663-B2
Application number	US-201313746887-A
Country	US
Kind code	B2
Filing date	Jan 22, 2013
Priority date	Jan 22, 2013
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

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.

First claim

We claim:

1. A wipe cloth weighing from 100 g/m 2 to 500 g/m 2 , wherein the wipe comprises cross-lapped webs formed at least partially of winged-type polymeric fibers with nano-channels between the wings measuring one micron or less, with a filament titer of 1.0 to 10 dtex, the fibers between about 30 and about 100 mm long,
wherein the cross-lapped webs are entangled either by needle-punching or hydro-entangling.

2. The wipe cloth according to claim 1 , wherein the wing-type fiber comprises a middle region, the middle region having between 16 wings and 32 wings extending therefrom, wherein the wings are projections extending from the middle region and around the periphery of the middle region.

3. The wipe cloth according to claim 1 , wherein the cloth is a non-woven.

4. The wipe cloth according to claim 1 , wherein the webs include both winged and non-winged fibers.

5. A wipe cloth weighing from 30 g/m 2 to 500 g/m 2 , wherein the wipe comprises at least one spunbond non-woven web formed at least partially of a continuous winged-type polymeric filament with nano-channels between the wings measuring one micron or less, with a filament titer of 1.0 to 10 dtex,
wherein the web is hydroentangled.

6. The wipe cloth according to claim 5 , wherein the at least one web includes both winged-type and non-winged-type fibers.

Assignees

• Allasso Ind Inc
• Univ North Carolina State

Inventors

• Pourdeyhimi Behnam
• Chappas Walter
• Barnes Iii Harry M

Classifications

• Y10T442/611

  Cross-sectional configuration of strand or fiber material is other than circular · CPC title

• E04B1/8409

  sheet-shaped · CPC title

• D04H1/4382

  Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather · CPC title

• C01G43/003

  Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange · CPC title

• D04H13/00

  Other non-woven fabrics · CPC title