Method of irradiation of polymer films by an electron beam

Details Method of irradiation of polymer films by an electron beam Method of irradiation of polymer films by an electron beam

C - Chemistry, Metallurgy

08

J

C08J 3/28 (2006.01) B05D 3/06 (2006.01) B29C 71/04 (2006.01) B29C 35/08 (2006.01)

Patent

CA 2276670

The method of irradiating polymer films by an electron beam comprises a two- stage application of an accelerated electron beam on sections of moving polymer film until the preset radiation dose has been absorbed. The duration of the set time interval between the end of treatment Stage one and the beginning of treatment Stage two of the initially irradiated film is not less than 500 msec. The set dose accumulated by each section of the film in Stage one is sufficient to alter the polymer film material from a free molecular state to a cross-linked state characterized by the formation of 3-dimensional molecular structures having a greater molecular mass.

L'invention concerne un procédé d'irradiation de films polymères par un faisceau d'électrons caractérisé par une application en deux phases d'un faisceau d'électrons accélérés sur des zones de film polymère en mouvement jusqu'à ce que la dose de radiation prédéterminée ait été absorbée. La durée entre fin du traitement de phase un et début du traitement de phase deux du film irradié n'est pas inférieure à 500 ms. La dose prédéterminée cumulée par chaque zone du film en phase un suffit à faire passer le matériau polymère formant le film de l'état moléculaire libre et l'état réticulé caractérisé par la formation de structures moléculaires tridimensionnelles de masse moléculaire supérieure.

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