Liquid rubber article in situ compounding into a forming mold

Details Liquid rubber article in situ compounding into a forming mold Liquid rubber article in situ compounding into a forming mold

C - Chemistry, Metallurgy

08

J

C08J 3/20 (2006.01) C08J 3/24 (2006.01) C08J 5/00 (2006.01)

Patent

CA 2525348

A method for making cured polymeric articles such as gaskets or seals in situ (within a forming mold) from a feed stream compounded polymer admixture of (a) a first batch admixture of base polymer and a first curing component of a plural component curing combination, (b) a second batch admixture of the base polymer and a second curing component, and (c) a third batch admixture of a carrier and a plurality of performance additives. The third batch admixture is provided from a vessel having a relatively small volume (when compared to the volume of the vessels holding the first and second batch admixtures); this small volume enables precise formulations of additives and rapid changeover of additive formulations for the base polymer.

Un procédé de fabrication d'articles en polymère durci, tels que des joints d'étanchéité ou des joints in situ (à l'intérieur d'un moule de formage) à partir de mélange de polymère composite à débit d'entrée comprenant (a) un premier lot de mélange de polymère de base et un premier composant de durcissement d'une combinaison de durcissement de plusieurs composants, (b) un deuxième lot de mélange de polymère de base et un deuxième composant de durcissement, et (c) un troisième lot de mélange d'un support et une pluralité d'additifs améliorant la performance. Le troisième lot de mélange est obtenu à partir d'un récipient ayant un volume relativement petit (comparativement au volume des récipients contenant les premier et deuxième mélanges); ce petit volume permet des formulations précises d'additifs et un changement rapide des formulations d'additifs pour le polymère de base.

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