Process for production of thermal shock tube, and product...

C - Chemistry – Metallurgy – 06 – C

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C06C 5/04 (2006.01)

Patent

CA 2538734

"Process for production of thermal shock tube, and product thereof" refers to a process for production of a thermal shock tube and product thereof, applied as signal transmission device for connecting and initiating explosive columns, or as a flame conductor, usually complemented by delay element or used as a delay unit, which uses a pyrotechnic mixture with low sensitivity to ignition by shock or friction, with low toxicity, which generates a spark with superior thermal performance, said process having the possibility of continuous and separated dosing of the individual non-active components, in conjunction with the formation of the plastic tube, and said product maintaining the advantages of the current pyrotechnic shock tube and presents additional advantages of use of low toxicity components, use of ordinary, low cost, low adhesiveness polymers, generation of a spark that propagates through knots, closed kinks or tube obstructions, and resistance to hot explosive emulsions.

L'invention concerne un procédé de production d'un tube résistant aux chocs thermiques ainsi que le produit obtenu. Ce tube est utilisé comme dispositif de transmission de signaux pour connecter et allumer des colonnes explosives, ou comme conducteur de flamme, généralement complété par un circuit à retard ou servant lui-même d'unité à retard, et contenant un mélange pyrotechnique à faible sensibilité à la mise à feu due aux chocs ou aux frottements, à faible toxicité, et qui produit une étincelle ayant une résistance thermique supérieure. Ce procédé permet le dosage continu et séparé des composants individuels non actifs, conjointement à la formation du tube plastique, ledit produit conservant les avantages du tube de résistance au choc pyrotechnique et présentant d'autres avantages tels que: utilisation de composants à faible toxicité, utilisation de polymères de faible adhésivité peu coûteux, génération d'une étincelle qui se propage à travers les noeuds, les plis fermés ou les obstructions du tube, et résistance aux émulsions explosives chaudes.

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