Timothy C Gilbert

US Patent:

7927459, Apr 19, 2011

Filed:

Sep 17, 2007

Appl. No.:

11/901402

Inventors:

Helen Y. Huang - New Albany OH, US
Paul Klett - Newawrk OH, US
Liang Chen - New Albany OH, US
Timothy A. Miller - Newark OH, US
Timothy R. Gilbert - Granville OH, US

Assignee:

OCV Intellectual Capital, LLC - Toledo OH

International Classification:

D21H 17/33
D21H 23/12
D21H 23/14

US Classification:

162156, 162152, 162158, 1621641, 1621681, 162185

Abstract:

Methods for improving the tear strength in non-woven chopped strand mats during the manufacturing process of the mats are provided. In particular, the tear strength of the mat can be improved as the mat is being formed in response to current manufacturing conditions by the addition of a water soluble polyol, such as polyvinyl alcohol, or a cationic dispersant to the binder seal pit. Alternatively, a cationic dispersant may be added to the white water chest to improve the tear strength of the chopped strand mat. The addition of polyvinyl alcohol or a cationic dispersant to the binder seal pit results in an immediate or nearly immediate improvement of the tear strength of the chopped strand mat. Both the polyvinyl alcohol and the cationic dispersant can be utilized to improve the tear strength of a chopped strand mat regardless of the type of binder or components in the white water.

US Patent:

8043025, Oct 25, 2011

Filed:

Apr 24, 2007

Appl. No.:

11/789203

Inventors:

Jesus Manuel Hernandez-Torres - Pataskala OH, US
Liang Chen - New Albany OH, US
Jeffery W. Smith - Lockport IL, US
Timothy A. Miller - Newark OH, US
Helen Y. Huang - New Albany OH, US
Michael D. Samueloff - Troy MI, US
Mohammed Tazi - New Albany OH, US
Timothy R. Gilbert - Granville OH, US

Assignee:

Owens Corning Intellectual Capital, LLC - Toledo OH

International Classification:

E01C 3/00

US Classification:

404 31, 404 17, 442 59, 442225, 442328, 442331, 442333

Abstract:

A paving mat for use in a paved surface includes a fibrous mat in the form of a paving mat. The fibrous mat includes a fibrous matrix containing a mixture of polymer fibers, first mineral fibers having a first median length, and second mineral fibers having a second median length that is different from the first median length. In another embodiment, the paving mat includes a fibrous mat including a fibrous matrix which is bonded together by a binder. In one embodiment, the binder is a mixture of different binders. The fibrous matrix includes a mixture of mineral fibers in an amount within a range of from 61 wt % to 85 wt % and polymer fibers in an amount within a range of from 15 wt % to 39 wt %. The polymer fibers have a melting point greater than 320 F. (160 C. ). The mat has a stiffness in the machine direction within a range of from 65 g-cm to 110 g-cm.