Fibrous insulation mat with anti-punking binder system

Details Fibrous insulation mat with anti-punking binder system Fibrous insulation mat with anti-punking binder system

1980-12-04

1981-10-13

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

260 293, 260 38, 4273898, 428290, 428429, 428447, 525489, D04H 158

Patent

active

042948797

ABSTRACT:
The present invention comprises a low-cost, convenient to use anti-punking binder system for use in bonding entangled masses of mineral fibers such as glass. The binder system comprises a phenolic-formaldehyde resin mixed with a water soluble urea-formaldehyde resin; the urea-formaldehyde resin content in the binder system comprising an amount of about 5 to 50% by weight of the binder solids content. The urea-formaldehyde resin comprises about 59% urea, about 19% formaldehyde and about 22% water by weight. Silane, ammonia and ammonium sulfate may also be added.

REFERENCES:
patent: 3072595 (1963-01-01), Barth et al.
patent: 3846225 (1974-11-01), Statego
patent: 3911046 (1975-10-01), Ackermann et al.
patent: 3956204 (1976-05-01), Higgenbottom
patent: 4251590 (1981-02-01), Rubright et al.

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