Mastic composition and composite structural panels formed theref

Details Mastic composition and composite structural panels formed theref Mastic composition and composite structural panels formed theref

1976-05-06

1977-08-30

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156324, 428117, 428131, B31D 302

Patent

active

040452689

ABSTRACT:
A mastic composition formed of a substantially homogeneous imporous mixture of a predetermined volume of low-density expanded closed-cell synthetic resin beads and a slurry prepared from calcined gypsum and water wherein the interstitial volume of the expanded beads is not substantially less than the volume of slurry. The substantially homogeneous mixture is self-adhering as a thick layer on an inverted smooth surface and yet separable therefrom as an integral layer, the mastic composition setting to a hard, strong, dimensionally stable, heat- and sound-retardant material. Method of mixing mastic compositions, and composite structural panels utilizing mastic compositions as well as the methods and apparatus for forming such panels are also disclosed.

REFERENCES:
patent: 3103460 (1963-09-01), Picket
patent: 3249659 (1966-05-01), Voelker
patent: 3738895 (1973-06-01), Daymal
patent: 3810800 (1974-05-01), Doll

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