A machine for forming a bonded edge fold on a headliner is disclosed. The headliner includes a ceiling and an edge flange that has a wall section and a backing section. The machine includes a lower die that receives the headliner and an upper die disposed above the lower die. The machine further includes a slide connected to the upper die and at least one actuator operable to move the slide. Movement of the slide causes the slide to engage with the backing section and fold the backing section over the wall section forming a bonded edge fold. A method of forming a headliner is also disclosed.