Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Noninterengaged fiber-containing paper-free web or sheet...
Patent
1975-09-11
1977-07-12
Bell, James J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Noninterengaged fiber-containing paper-free web or sheet...
427434R, 427442, 427443, 428301, 428489, B32B 1102
Patent
active
040355446
ABSTRACT:
An asphalt roofing which comprises a base material of a bulky non-woven fabric made of filaments of synthetic fibres intertwined with each other and an asphalt with which said base material is uniformly and completely saturated and which also covers both sides of said base material. The non-woven fabric has a substantial thickness, such as 4-5mm, and is produced by the well-known needle-punching process. This base material is saturated with and covered by the single kind of asphalt. A method of making same comprises feeding said non-woven fabric along a vertical path into a bath of molten asphalt, thereby permitting the air contained within the fabric to successively escape vertically through the fabric itself into the atmosphere while permitting the fabric to be uniformly and completely saturated with said molten asphalt, and then withdrawing said fabric from the molten asphalt into the atmosphere and drying the same.
REFERENCES:
patent: 1347095 (1920-07-01), Harrison
patent: 1587652 (1926-06-01), Johnston
patent: 1809360 (1931-06-01), Schutte
patent: 2012968 (1935-09-01), Miller
patent: 2343600 (1944-03-01), Weimann
patent: 3721578 (1973-03-01), Bennett et al.
Iwasaki Hajime
Tomita Yasuo
Bell James J.
Mitsuboshi Sangyo Kabushiki Kaisha
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