a release device , and in particular a release device for use in parachute systems in place of pyrotechnic cutters . the inventive systems utilize a severable structural member of low melting point , high strength polymer that is severed by introducing a heat defect . the member is typically a ultra high molecular weight polyethylene braided line and the heat defect is preferably caused a resistance heater or solid state laser diode . this inventive results in a low cost non - pyrotechnic release device with is not subject to regulatory and transportation restrictions .