IP Library › Patent Application 10819034
Patent Application
App. No. 10/819,034

Hydroentangled continuous filament nonwoven fabric and the articles thereof

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Quick Facts
Patent No.
US None
App. No.
10/819,034
Abstract

The present invention relates to a method of forming a nonwoven fabric, and more specifically to a nonwoven fabric comprised of hydroentangled continuously extruded, essentially endless thermoplastic polymer nano-denier filaments. The polymeric nano-denier filaments can be provided in the form of one or more precursor webs, or the process can be practiced in-line process. Fabrics embodying the present invention may comprise laminations of differing polymeric filaments, such as filaments exhibiting significantly differing bonding temperatures.

Claims (24)

1 . A method of making a nonwoven fabric comprising the steps of:

a. providing a polymeric melt;

b. extruding said polymeric melt into continuous filaments wherein said filaments are of a diameter less than or equal to 1000 nanometers;

c. collecting said extruded nano-denier continuous filaments on a belt;

d. consolidating said continuous filaments; and

e. hydroentangling said nano-denier filaments so as to form a nonwoven fabric.

2 . A method of making a nonwoven fabric comprising the steps of;

a. providing a polymeric melt;

b. extruding said polymeric melt into continuous filaments wherein said filaments are of a diameter less than or equal to 1000 nanometers;

c. collecting said extruded nano-denier continuous filaments on a belt;

d. consolidating said continuous filaments;

e. pre-entangling said nano-denier filaments;

f. advancing said pre-entangled nano-denier filaments onto a foraminous surface; and

g. hydroentangling said filaments on said foraminous surface so as to impart an image into said nonwoven fabric.

3 . A method of making a nonwoven fabric comprising the steps of;

a. providing a precursor web comprising nano-denier continuous filaments of a diameter less than or equal to 1000 nanometers;

b. advancing said precursor web onto a foraminous surface; and

c. hydroentangling said filaments on said foraminous surface so as to form said nonwoven fabric.

4 . A method of making a nonwoven fabric as in claim 1 , wherein said formainous surface is a three-dimensional transfer device.

5 . A nonwoven fabric comprising one or more layers of hydroentangled nano-denier continuous filaments wherein said filaments have a diameter of less than or equal to 1000 nanometers.

6 . A nonwoven fabric as in claim 5 , wherein said fabric is a diaper component.

7 . A nonwoven fabric as in claim 5 , wherein said fabric is a sanitary napkin component.

8 . A nonwoven fabric as in claim 5 , wherein said fabric is a disposable garment component.

9 . A nonwoven fabric as in claim 5 , wherein said fabric is a surgical drape component.

Assignments (6)
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Dec 6, 2005
From: CITICORP NORTH AMERICA, INC., AS FIRST LIEN COLLATERAL AGENT
To: BONLAM (S.C.), INC.; CHICOPEE, INC.; DOMINION TEXTILE (USA) INC.; FABPRO ORIENTED POLYMERS, INC.; FABRENE CORP.; FABRENE GROUP L.L.C.; FIBERGOL CORPORATION; FIBERTECH GROUP, INC.; FNA ACQUISITION, INC.; FNA POLYMER CORP.; LORETEX CORPORATION; PGI EUROPE, INC.; PGI POLYMER, INC.; PNA CORPORATION; POLY-BOND INC.; POLYLONIX SEPARATION TECHNOLOGIES, INC.; POLYMER GROUP, INC.; PRISTINE BRANDS CORPORATION; TECHNETICS GROUP, INC.
Reel/Frame 016851/0436 →
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Dec 6, 2005
From: WILMINGTON TRUST COMPANY, AS SECOND LIEN COLLATERAL AGENT
To: BONLAM (S.C.), INC.; CHICOPEE, INC.; DOMINION TEXTILE (USA) INC.; FABPRO ORIENTED POLYMERS, INC.; FABRENE CORP.; FABRENE GROUP L.L.C.; FIBERGOL CORPORATION; FIBERTECH GROUP, INC.; FNA ACQUISITION, INC.; FNA POLYMER CORP.; LORETEX CORPORATION; PGI EUROPE, INC.; PGI POLYMER, INC.; PNA CORPORATION; POLY-BOND INC.; POLYLONIX SEPARATION TECHNOLOGIES, INC.; POLYMER GROUP, INC.; PRISTINE BRANDS CORPORATION; TECHNETICS GROUP, INC.
Reel/Frame 016851/0471 →
SECURITY AGREEMENT Recorded Dec 6, 2005
From: POLYMER GROUP, INC.; CHICOPEE, INC.; FIBERTECH GROUP, INC.; PGI POLYMER, INC.; POLY-BOND INC.
To: CITICORP NORTH AMERICA, INC., AS COLLATERAL AGENT
Reel/Frame 016851/0624 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 23, 2004
From: ZUCKER, JERRY
To: POLYMER GROUP, INC.
Reel/Frame 015716/0818 →
SECURITY AGREEMENT Recorded Aug 12, 2004
From: CHICOPEE, INC.; FIBERTECH GROUP, INC.; POLY-BOND, INC.; POLYMER GROUP, INC.
To: WILMINGTON TRUST COMPANY, AS SECOND LIEN COLLATERAL AGENT
Reel/Frame 015778/0311 →
SECURITY AGREEMENT Recorded Aug 10, 2004
From: CHICOPEE, INC.; FIBERTECH GROUP, INC; POLY-BOND, INC.; POLYMER GROUP, INC.
To: CITICORP NORTH AMERICA, INC. AS FIRST LIEN COLLATERAL AGENT
Reel/Frame 015732/0080 →