Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1978-06-12
1983-03-29
Thomas, Alexander S.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428285, 428286, 428334, 428337, 428339, 428433, 428442, 4284256, 220901, B32B 1702, B32B 1710
Patent
active
043784038
ABSTRACT:
A relatively thin, flexible, impervious, sheet-like laminated building material comprising at least three continuous overlying layers of yielding material adapted to withstand very severe cold conditions, bonded together and consisting of at least one first mechanically strong supporting endmost layer having a thickness of from about 0.3 to about 0.6 mm; at least one impervious film-like layer having a thickness of from 0.04 to 0.10 mm and at least one second endmost lining layer providing at least a mechanical and at least temporary protection and having a thickness from about 0.3 to 0.6 mm.
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patent: 4105819 (1978-08-01), Kotcharian
Technigaz
Thomas Alexander S.
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