Method of manufacturing airbag lid section for vehicle

A method of manufacturing an airbag lid section for a vehicle, the method comprising:

• continuously molding a core material and an inner lid, both of which form an airbag lid section, with a molding die assembly by molding one of the core material and the inner lid with the molding die assembly and injecting molten resin for the other one of the core material and the inner lid into the molding die assembly with the one of the core material and the inner lid left intact within the molding die assembly upon which the molten resin is solidified;
• and
• during the step of molding the inner lid, injecting the molten resin with wall surfaces of slide dies being intervened and solidifying the same to allow hinge portions to be integrally formed with the inner lid;
• whereby the airbag lid section is formed with the core material and the inner lid, formed on the core material at a rear surface thereof, which has end portions contiguously formed with the hinge portions that protrude in a rearward direction of the core material.