Sheet type felt

Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture

Patent

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Details

428131, 428280, 428284, 428297, 4283144, 4283184, 428920, B32B 310

Patent

active

045130450

ABSTRACT:
Sheet type felt material comprising 5-20 wt % glass fibers, 40-80 wt % cellulosic 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: 3094447 (1963-06-01), Chamberlain
patent: 4214032 (1980-07-01), Csikos et al.
patent: 4472243 (1984-09-01), Bondoc et al.

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