Fibrous mat facer with improved strike-through resistance

D - Textiles – Paper – 04 – H

Patent

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Details

154/115, 117/43

D04H 1/60 (2006.01) B32B 5/18 (2006.01) B32B 5/28 (2006.01) D04H 1/58 (2006.01) D04H 1/64 (2006.01)

Patent

CA 1281245

Abstract of the Disclosure 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.

497532

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