David S Richards

US Patent:

20020019206, Feb 14, 2002

Filed:

May 10, 2001

Appl. No.:

09/852505

Inventors:

Ganesh Deka - Duluth GA, US
Charles Edmundson - Roswell GA, US
David Richards - Woodstock GA, US

International Classification:

B24D011/00

US Classification:

451/526000

Abstract:

A colored loop material suitable for use with a hook-and-loop fastening system, wherein the loop material includes a first fibrous nonwoven web having a first surface and a second surface and includes side by side bicomponent spunbond fibers in which the fibers have a melting point differential of at least about 15 C. and in which said bicomponent spunbond fibers are comprised of a polypropylene component including at between about 2% to 4% by weight of a coloring formulation, and a copolymer component. The first fibrous nonwoven web has a thickness of at least about 0.15 mm and a basis weight of at least about 20 grams per square meter; a pattern on the first surface thereof of continuous bonded areas defining a plurality of discrete unbonded areas formed by the application of heat and pressure, wherein individual fibers within the discrete unbonded areas have at least a portion thereof extending into and bonded within the continuous bonded areas; and a percent bonded area of from about 20 to about 50 percent. If desired, a film layer may be bonded to the second surface of the first fibrous nonwoven web. Alternatively, a second fibrous nonwoven web may be bonded or laminated to the second surface of the first fibrous nonwoven web. The loop material is particularly suitable for the preparation of a releasably attachable abrasive sheet material.

US Patent:

57731209, Jun 30, 1998

Filed:

Feb 28, 1997

Appl. No.:

8/807800

Inventors:

Ganesh Chandra Deka - Duluth GA
Robert Alan Cool - Alpharetta GA
David William Richards - Woodstock GA

Assignee:

Kimberly-Clark Worldwide, Inc. - Neenah WI

International Classification:

B32B 306
A44B 104
A44B 1125

US Classification:

428 99

Abstract:

A loop material suitable for use in a hook-and-loop fastening system, which loop material includes a bonded carded web having a first side and a second side. The bonded carded web has a basis weight of from about 15 to about 140 grams per square meter and a thickness of from about 1 mm to about 15 mm. The bonded carded web may be thermally pattern bonded. The bonded carded web is composed of fibers having a denier per filament greater than 2, with from 100 to 0 percent by weight of the fibers being thermoplastic polymer fibers and from 0 to 100 percent by weight of the fibers being bicomponent thermoplastic polymer fibers. The first component of the bicomponent fibers has a melting point which is at least about 50. degree. C. lower than the melting point of the second component. The bonded carded web has a plurality of interfiber bonds.