Sheet type felt

Paper making and fiber liberation – Processes and products – Plural fiber containing

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Details

162149, 162169, 162171, D21H 518

Patent

active

045431582

ABSTRACT:
Sheet type felt material comprising 5-20 wt % glass fibers, 40-80 wt % cellulose fibers, 5-25 % binder and 3-20 wt % asphalt. The felt is made on conventional felt making equipment and may be used as siding or roofing underlayment or as facer for foam insulating boards.

REFERENCES:
patent: 2554089 (1951-05-01), Croce
patent: 2887428 (1959-05-01), Baymiller et al.
patent: 3015582 (1962-01-01), Simison
patent: 3216888 (1965-11-01), Cacossa et al.
patent: 3701672 (1972-10-01), Ruff et al.
patent: 3940540 (1976-02-01), Schmidt
patent: 4225383 (1980-09-01), McReynolds
patent: 4258098 (1981-03-01), Bondoc et al.
patent: 4373992 (1983-02-01), Bondoc

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