Method and apparatus for heat treatment of fibrous mats

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

F - Mech Eng,Light,Heat,Weapons

26

B

18/1014, 18/1177

F26B 13/10 (2006.01) B29C 35/06 (2006.01) B29C 67/24 (2006.01) B29C 35/04 (2006.01)

Patent

CA 1119373

ABSTRACT OF THE DISCLOSURES 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 and the equipment disclosed provide for continuous feed of the mat through a curing or treating oven having a plurality of heat treat- ment zones or areas. In one form of the method and equipment, 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.

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