Roofing underlayment and method of producing same

Details Roofing underlayment and method of producing same Roofing underlayment and method of producing same

2011-07-12

2011-07-12

Salvatore, Lynda (Department: 1786)

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Coated or impregnated woven, knit, or nonwoven fabric which...

Two or more non-extruded coatings or impregnations

C442S064000, C442S065000, C442S066000, C428S340000, C428S352000

Reexamination Certificate

active

07977259

ABSTRACT:
A roofing membrane suitable for use as an underlayment comprising a flexible, non-woven mat of polymeric fibers which are substantially uniformly dispersed throughout the non-woven mat and thermally bonded together at the points of intersection by the polymeric materials of the fibers, the mat having a top side and a bottom side, a layer of an asphaltic material being disposed on the bottom side of the mat to provide a coated mat and a liquid parting agent applied to the top side of the mat.

REFERENCES:
patent: 4588634 (1986-05-01), Pagen et al.
patent: 6207593 (2001-03-01), Fields
patent: 2006/0228962 (2006-10-01), Souther et al.

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