Waterproof characteristic inspection method of the electric wire, to the waterproof characteristic survey instrument of the electric wire and the wire exposure section

摘要

PROBLEM TO BE SOLVED: To provide a waterproofness inspection method of an electric wire, a waterproofness inspection apparatus of an electric wire, as well as a manufacturing method of an electric wire having an excellent waterproof property, capable of confirming a waterproof agent permeating uniformly in the electric wire by non-destruction.;SOLUTION: In the waterproofness inspection method of an electric wire, a waterproof agent is supplied to a strand-exposing part of an electric wire at one end of the electric wire, a waterproof processing inside the wire is carried out by suction of air in the wire from the other end of the wire, the suction processing is stopped, and then, a pressure change of air in the wire is measured. In the method of manufacturing the electric wire having a waterproof property, a waterproof agent is supplied to a strand-exposing part of the electric wire at one end of the electric wire, a waterproof process inside the wire is carried out by suction of air in the wire from the other end of the wire, the suction processing is stopped, a pressure change of air in the wire is measured, and then, the pressure change is confirmed that the change is in a predetermined range.;COPYRIGHT: (C)2008,JPO&INPIT