Sheet type roofing

Paper making and fiber liberation – Processes and products – With coating after drying

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Details

162145, 162149, 1621683, 162169, 162171, 162175, 428141, 428288, 428291, 428297, 428299, 428300, 428301, 428489, 428490, D21H 110

Patent

active

044722435

ABSTRACT:
Sheet type felt material and sheet type roofing material such as shingles and rolls made therefrom. The felt comprises 10-60 wt % glass fibers of varying lengths, 15-80 wt % cellulosic fiber and 5-25% binder. The roofing material is felt of the invention saturated with asphaltic saturant and coated with filled asphaltic coating material and conventional roofing granules.

REFERENCES:
patent: 2555401 (1951-06-01), Fasold et al.
patent: 2702241 (1955-02-01), Hawley
patent: 2772603 (1956-12-01), Waggoner
patent: 3749638 (1973-07-01), Renaud et al.
patent: 4035544 (1977-07-01), Iwasaki et al.
patent: 4225383 (1980-09-01), McRenolds
patent: 4284470 (1981-08-01), Bondoc
patent: 4373992 (1983-02-01), Bondoc
patent: 4440816 (1984-04-01), Uffner
patent: 4442172 (1984-04-01), Oshima et al.

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