Method for heat treatment of fibrous mats

Details Method for heat treatment of fibrous mats Method for heat treatment of fibrous mats

1979-05-18

1982-02-23

Hall, James R.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

264123, 264345, B29J 500

Patent

active

043168655

ABSTRACT:
A technique is disclosed for heat treatment of fibrous mats, especially mats formed of mineral fibers such as glass and carrying a heat hardenable binder material, such as a thermosetting resin. The method disclosed provides for continuous feed of the mat through a curing or treating oven having a plurality of heat treatment zones. In one form of the method, the heat treatment in at least one zone is effected by circulation of a heated gas, such as air, through the mat in said zone, and the mat is also subjected to heat treatment in a localized area lying within said zone by passage of a second heated gas through the mat, the second heated gas having a pressure higher than that in the surrounding portions of said zone.

REFERENCES:
patent: 2997096 (1961-08-01), Morrison
patent: 3084448 (1963-04-01), Dungler
patent: 3096161 (1963-07-01), Morrison et al.
patent: 3518157 (1970-06-01), Terry et al.
patent: 3583030 (1971-06-01), Terry et al.
patent: 3652377 (1972-03-01), Helmick
patent: 3865540 (1975-02-01), Loeffler

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