Fibrous mat facer with improved strike-through resistance

Details Fibrous mat facer with improved strike-through resistance Fibrous mat facer with improved strike-through resistance

1984-12-24

1987-01-20

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428216, 428219, 428220, 428286, 428290, 4283115, 4283166, 4283175, 4283177, 4283179, 428337, 428338, 428339, 428422, 428448, 428903, B32B 524, B32B 1710, D04H 312

Patent

active

046379517

ABSTRACT:
An economical and versatile fibrous glass mat displaying improved resistance to wetting or strike-through by various curable materials when said materials are placed on one surface of said mat while in liquid state is disclosed. This mat, which is especially suited as a carrier, substrate or facer for such curable substances, comprises a blend of fibers. This blend of fibers includes a majority of base fibers having a mean diameter in the range of ten (10) microns with a minor amount of microfibers. The binder formulation, which when cured holds the blend of fibers together to form a self-supporting mat, includes conventional binder resins with a minor amount of wet proofing resinous materials.
Preferably, the resulting mat has a porosity of no greater than two-hundred and twenty-five (225) cubic feet per minute per square foot of mat in accordance with the Frazier Air Permeability Test. Also, claimed is a laminate comprising this novel mat and a vinyl plastisol coating or a coating of a foam insulation material such as a polyurethane or polyisocyanurate foam.

REFERENCES:
patent: 4186236 (1980-01-01), Heitmann
patent: 4388366 (1983-06-01), Rosata et al.
patent: 4508775 (1985-04-01), Adiletta

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