Method of evaluating the flame retardancy of sealing resin and test sample for evaluation of flame retardancy

Abstract

A method of evaluating the flame retardancy of a sealing resin comprises a step of fusion cutting a heating element by causing the heating element to generate heat by the passage of electric current to a test sample of a molded body of the sealing resin including the heating element therein; a step of igniting the sealing resin by continuing the passage of electric current even after the heating element is fusion-cut; and a step of measuring voltage and/or current applied in a period from when the heating element is fusion-cut to the ignition of the sealing resin. The test sample is used in the method of evaluating the flame retardancy and provided with a heating wire; conducting terminals made of metal having an electric resistance lower than the heating wire and connected to both ends of the heating wire; and a sealing resin layer covering the outer periphery of the heating wire. The evaluation can be performed on the flame retardancy of the sealing resin used for the electronic equipment based on its actual use.

Dependencies are inferred from the claim text.