Mastic composition and composite structural panels formed theref

Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With work feeding or handling means

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156197, 156324, 156551, B32B 100

Patent

active

039909360

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. Methods 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.

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patent: 2853413 (1958-09-01), Christian
patent: 3109763 (1963-11-01), Finger
patent: 3166149 (1965-01-01), Hulse et al.
patent: 3274046 (1966-09-01), Shannon et al.
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patent: 3642550 (1972-02-01), Doll
patent: 3650871 (1972-03-01), Bentfors
patent: 3671355 (1972-06-01), Paymal
patent: 3846524 (1974-11-01), Elmore et al.

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