The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 2010
Filed:
Mar. 15, 2006
Roger Lee Souther, Woodruff, SC (US);
Ralph Michael Fay, Lakewood, CO (US);
Ruben Gregory Garcia, Littleton, CO (US);
Roger Lee Souther, Woodruff, SC (US);
Ralph Michael Fay, Lakewood, CO (US);
Ruben Gregory Garcia, Littleton, CO (US);
Johns Manville, Denver, CO (US);
Abstract
A flexible nonwoven mat of polymeric fibers is liquid water transmission resistant and is particularly well suited for use as a prefabricated building construction underlayment. The polymeric fibers may be standard polymeric fibers or sheathed polymeric fibers that have fiber sheaths with a lower softening point temperature than the softening point temperature of the fiber cores. Preferably, the polymeric fibers are spunbond fibers and are bonded together through the application of heat and pressure. Where the fibers are sheathed fibers, interstices of the nonwoven mat are at least partially filled by a portion of the polymeric material of the sheaths that is dispersed into the interstices to reduce the porosity of the mat. In certain embodiments, the polymeric fibers on the top major surface of the mat are coated with a hydrophobic binder coating material, which is overlaid with a water repellant coating material, such as a filled asphalt, modified bitumen, or a non-asphaltic polymeric film, to increase the liquid water impermeability and enhance other physical properties of the mat.