Bituminized roof sheet

Details Bituminized roof sheet Bituminized roof sheet

1979-06-19

1981-09-01

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

156 85, 156290, 428152, 428198, 428300, 428458, 428489, 428921, B32B 328, B32B 306

Patent

active

042872480

ABSTRACT:
The flame resistance of a bituminized roof sheet consisting of a reinforced fleece, a metal foil and bitumen is improved substantially by applying a metal foil to one face. A rupture of the metal foil in the case of stress due to elongation is prevented by wrinkling it. The elongation reserve thus obtained is in the range of from 2 to 35%.

REFERENCES:
patent: 788358 (1905-04-01), Jacobs
patent: 1551318 (1925-08-01), Logan
patent: 1568314 (1926-01-01), Buttress et al.
patent: 1665222 (1928-04-01), Robinson
patent: 1970746 (1934-08-01), Grayson et al.
patent: 2244352 (1941-06-01), Young et al.
patent: 3137972 (1964-06-01), Ekholm et al.
patent: 3967032 (1976-06-01), Plotz et al.
Die Bauwirtschaft, "Wasserbau," Heft 44, Oct. 29, 1970.

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