Tracy A Wilson

US Patent:

61799394, Jan 30, 2001

Filed:

May 12, 1997

Appl. No.:

8/854460

Inventors:

Billy Ray Jones - Cumming GA
Rob Lee Jacobs - Woodstock GA
Tracy Neal Wilson - Woodstock GA

Assignee:

Kimberly-Clark Worldwide, Inc. - Neenah WI

International Classification:

B29C 5506
B29C 6508
B29C 6720

US Classification:

156 731

Abstract:

Breathable barriers, comprising a thermoplastic polymer and at least 30% by weight filler, are stretched in one direction in multiple discrete steps wherein the strain rate of each discrete stretching step is less than about 100,000%/minute and wherein the line speed of the last stretching step is in excess of 500 feet per minute. The resulting films may be stretched, as a result of the cumulative discrete stretching operations, from about 2 to 7 times its original length in order to create a breathable barrier having a WVTR in excess of 800 g/m. sup. 2 /day and a hydrohead of at least 60 cm.

US Patent:

54827728, Jan 9, 1996

Filed:

Dec 28, 1992

Appl. No.:

7/997406

Inventors:

David C. Strack - Canton GA
Tracy N. Wilson - Woodstock GA
Donald V. Willitts - Fairburn GA

Assignee:

Kimberly-Clark Corporation - Neenah WI

International Classification:

B32B 4900

US Classification:

428357

Abstract:

Single and multicomponent polymeric strands including a blend of a melt-extrudable polyolefin and a heterophasic polypropylene composition. The heterophasic polypropylene composition includes three polymers and is normally not melt-spinable into strands by itself. In the multicomponent strands, the blend is in one side or the sheath. Fabric made with such strands is also disclosed and has improved combinations of strength, abrasion resistance, and softness properties. Composite materials including the foregoing fabric bonded to both sides of an inner meltblown layer are also disclosed. In addition, garments made with the fabric are disclosed.