A new foam coated nonwoven fibrous mat having properties particularly
suited for a facer on gypsum wallboard, laminates made therefrom and the
method of making the mat is disclosed. The mat preferably contains a major
portion of glass fibers and a minor portion of a resinous binder. The foam
coating is permeable and reduces fiber dust and abrasion experienced in
the past with relatively coarse, relatively inexpensive glass fibers in
the mat. Contrary to previous methods, the foam coated fibrous mat is made
in-line on a wet mat forming production line by applying a wet foam binder
onto a wet, fibrous web followed by drying and curing in-line.