Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Noninterengaged fiber-containing paper-free web or sheet...
Patent
1986-10-21
1988-03-15
Lesmes, George F.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Noninterengaged fiber-containing paper-free web or sheet...
52518, 428136, 428139, 428141, 428143, 428167, 428179, 428352, 428489, B32B 900, B32B 1100, B32B 310, B65B 6300
Patent
active
047312840
ABSTRACT:
A roof covering material is comprised of a polybitumen sealing web composed of a thermally weldable closed homogeneous sealing layer formed along an underside with parting and pressure equalizing means affording fluid communication over an internal region of juxtaposition of the web with a roof surface, and a support of a filamentary web impregnated with a polymerbitumen on an upper surface of the substantially fluid-impermeable web.
REFERENCES:
patent: 3607589 (1971-09-01), Schirtzinger
patent: 4136223 (1979-01-01), Harder
patent: 4389064 (1983-06-01), Laverriere
patent: 4472243 (1984-09-01), Bondoc et al.
patent: 4567079 (1986-01-01), Canfield et al.
patent: 4617221 (1986-10-01), von der Chys
Hailer Dieter
Schult Kurt
Dr. Kohl GmbH & Cie Dachbelag- und Bautenschutzmittel Fabrik
Dubno Herbert
Lesmes George F.
Ross Karl F.
Zirker D. R.
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