Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1981-03-11
1982-09-07
Van Balen, William J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
156 79, 4283128, 4283179, 428447, 428454, B32B 518, B32B 522
Patent
active
043484522
ABSTRACT:
Prefabricated self-supporting panels having two outer layers and at least one inner layer provided with a foamed mixture, wherein the inner layer comprises unsaturated polyester resins, a coupling agent of the organo-functional silane type and a granular filler formed with foamed clay which fills the whole cavity between the two outer layers and has an average diameter between 15 and 20 mm and a specific gravity of 0.35 Kg/dm.sup.3.
The process for the manufacture of these panels has also been described.
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patent: 4255482 (1981-03-01), Udagawa
patent: 4256803 (1981-03-01), Savey et al.
patent: 4268574 (1981-05-01), Peccenini et al.
Paolo Peccenini
Paolo Romini
Pantec S.R.L.
Van Balen William J.
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