Ping M Hao

US Patent:

7015158, Mar 21, 2006

Filed:

Jan 16, 2002

Appl. No.:

10/050413

Inventors:

Charles Eric Pearce - Charlotte NC, US
Sergio de Leon - Clayton NC, US
Michael Putnam - Fuquay-Varina NC, US
Cheryl Carlson - Willow Springs NC, US
Ping Hao - Charlotte NC, US

Assignee:

Polymer Group, Inc. - North Charleston SC

International Classification:

D04H 1/46
D04H 3/10
D04H 5/02

US Classification:

442408, 442 57, 442356, 442357, 442387, 428359, 428365

Abstract:

A filter media formed in accordance with the present invention comprises hydroentangled, predominantly polyester staple length fibers having a basis weight of no more than about 12 oz/yd. The filter media exhibits a Mullen burst strength of at least about 395 psi, and machine-direction and cross-direction shrinkage of less than about 3%, preferably less than about 2%. The filter media exhibits a machine-direction tensile strength of at least about 105 lb/in, and a cross-direction tensile strength of at least about 110 lb/in.

US Patent:

7381669, Jun 3, 2008

Filed:

Jan 9, 2006

Appl. No.:

11/328305

Inventors:

Charles Eric Pearce - Charlotte NC, US
Sergio DeLeon - Clayton NC, US
Michael Putnam - Fuquay-Varina NC, US
Cheryl Carlson - Willow Springs NC, US
Ping Hao - Charlotte NC, US

Assignee:

Polymer Group, Inc. - Charlotte NC

International Classification:

D04H 1/46
D04H 3/10
D04H 5/02

US Classification:

442408, 442 57, 442356, 442357, 442387, 428359, 428365

Abstract:

A filter media formed in accordance with the present invention comprises hydroentangled, predominantly polyester staple length fibers having a basis weight of no more than about 12 oz/yd. The filter media exhibits a Mullen burst strength of at least about 395 psi, and machine-direction and cross-direction shrinkage of less than about 3%, preferably less than about 2%. The filter media exhibits a machine-direction tensile strength of at least about 105 lb/in, and a cross-direction tensile strength of at least about 110 lb/in.

US Patent:

20040211163, Oct 28, 2004

Filed:

Oct 21, 2003

Appl. No.:

10/690030

Inventors:

Richard Faulkner - Salisbury NC, US
Ping Hao - Charlotte NC, US
Per Lindblom - Huntersville NC, US

International Classification:

B01D046/00

US Classification:

055/486000

Abstract:

The present invention is directed to a filter media comprised of an electro-conductive scrim so as to improve on the dissipation time of an electrostatic charge. Further, the present invention is directed to a method of making such a filter media, which is formed through hydroentanglement, thus avoiding the deleterious effects of mechanical needling, while providing a filter media having the requisite strength characteristics, without possessing a limiting factor in performance. The filtration media of the present invention also demonstrates a highly desirable uniformity for cost-effective use.

US Patent:

20050000890, Jan 6, 2005

Filed:

Feb 13, 2004

Appl. No.:

10/778661

Inventors:

Charles Pearce - Huntersville NC, US
Sergio deLeon - Huntersville NC, US
Michael Putnam - Fuquay-Varina NC, US
Cheryl Carlson - Willow Springs NC, US
Ping Hao - Charlotte NC, US
Richard Faulkner - Salisbury NC, US

International Classification:

B01D039/14

US Classification:

210496000, 210503000

Abstract:

A filter media comprising hydroentangled predominant polyester staple length fibers having a basis weight of no more than about 12 oz/yd, an air permeability of at least about 180 cfm, and machine-direction and cross-direction shrinkage of less than about 3%, exhibiting greater than about 85% capture efficiency with particle sizes in the range of about 30 to 40 microns, and exhibiting greater than about 60% capture efficiency with particle sizes I the range of 20 to 30 microns.

US Patent:

20130197664, Aug 1, 2013

Filed:

Jan 25, 2013

Appl. No.:

13/749823

Inventors:

Bruce L. Anneaux - Lexington SC, US
Joshua L. Manasco - West Columbia SC, US
David P. Garner - Lexington SC, US
Ping Hao - Waxhaw NC, US

Assignee:

ZEUS INDUSTRIAL PRODUCTS, INC. - Orangeburg SC

International Classification:

D04H 1/728
B01D 39/04
B01D 71/32
A61F 2/02

US Classification:

623 2372, 55528, 55486, 96 4, 428219, 428218, 428215, 264 6

Abstract:

Espun material may function as a filtration medium or be put to other uses. The espun material may comprise espun poly(tetrafluoroethylene) (espun PTFE). One or more layers of the espun material may be included. The properties of the espun material can be tailored. For example, a gradient fabric may include espun PTFE. The gradient fabric may include two or more layers of espun PTFE.

US Patent:

20140205781, Jul 24, 2014

Filed:

Mar 14, 2013

Appl. No.:

13/827886

Inventors:

- Orangeburg SC, US
Bruce L. Anneaux - Lexington SC, US
Joshua Manasco - Columbia SC, US
Ping Hao - Waxhaw NC, US
Jeffrey D. Moulton - Columbia SC, US

Assignee:

Zeus Industrial Products, Inc. - Orangeburg SC

International Classification:

C08J 9/42

US Classification:

428 365, 4283084, 4281951, 427387, 427177, 156189

Abstract:

The present disclosure provides a composite material comprising a silicone component and an electrospun, porous polymeric component and methods of producing such a composite material. The layers are preferably processed so as to result in some degree of penetration of the silicone component into the pores of the electrospun polymeric component. The composite materials can be tailored for use in a range of different applications.