Paper felt and process for making the same

Details Paper felt and process for making the same Paper felt and process for making the same

1974-05-24

1976-03-09

Lusignan, Michael R.

Coating processes

With pretreatment of the base

Preapplied reactant or reaction promoter or hardener

162171, 162179, 427322, 427374, 427385, B32B 506, B32B 522, B44D 1092

Patent

active

039432696

ABSTRACT:
The process for producing roofing felt which is softer, more flexible and more fire-resistant than such felt commonly produced by the prior art and which consists of permeating the felt stock with a treating fluid comprising a mixture of oil and soda ladened water, next drying the treated felt stock to remove excess moisture therefrom, next impregnating the felt with heated molten asphalt, next permitting excess molten asphalt to drain therefrom and finally permitting the asphalt in the felt to cool.

REFERENCES:
patent: 1417840 (1922-05-01), Kirschbraun
patent: 2801937 (1957-08-01), Hess
patent: 3711314 (1973-01-01), Campbell

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