Method of, and apparatus for, heat treating a material web...

Details Method of, and apparatus for, heat treating a material web... Method of, and apparatus for, heat treating a material web...

B - Operations, Transporting

05

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117/109, 32/31

B05D 3/02 (2006.01) B05C 9/14 (2006.01) B29B 13/02 (2006.01) B29C 31/00 (2006.01) B29C 35/06 (2006.01) B29C 35/10 (2006.01) F26B 3/28 (2006.01) F26B 13/20 (2006.01) B29C 35/04 (2006.01) B29C 35/08 (2006.01)

Patent

CA 2040655

Prepregs are fabricated in a substantially horizontal treatment chamber by heat treating a material web impregnated with a thermosetting resin. In this treatment chamber, the material web is subjected to blowing directed toward the material web and held thereby in suspension. The blowing air heats the material web and dilutes and conveys away solvent vapors. Alternately with zones of blowing directed toward the material web, there are arranged radiant-heating zones.

Des tissus préimprégnés sont fabriqués dans une chambre pratiquement horizontale par traitement thermique d'une bande de tissu imprégné d'une résine thermodurcissable. Dans cette chambre de traitement, la bande de tissu est soumise à un soufflage direct qui maintient la bande en suspension. L'air soufflé chauffe le tissu et force l'évacuation des vapeurs de solvant. En alternance avec les zones de soufflage, la chambre de traitement comporte des zones de chauffage par rayonnement.

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