A capacitor having improved size for enhanced capacitance and a method of forming the same are disclosed. The airbag device for a front passenger seat according to the invention includes: an airbag kept in an inflatable and expandable state; an airbag container which is fixed to a vehicle and accommodates the airbag; and an airbag cover which covers the airbag container. The matrix material is carnauba wax modified with ozokerite wax in a weight ratio of about 1:1 to 20:1. Alternatively, other inflatable curtain modules may incorporate multiple inflators and multiple cushions to create an inflatable curtain module.