US Patent 7751150 Ramp for polyoxmethylene resin hard disk drive

A ramp for a polyoxymethylene hard resin disk drive, which has an outgas level of not more than 20 μg/g. The ramp for a polyoxymethylene resin hard disk drive comprises the steps of providing an extruder, melt kneading a polyoxymethylene resin with a colorant while degassing through one or more vents under a reduced pressure of −0.06 Mpa or less to prepare polyoxymethylene resin pellets, and injection molding the polyoxymethylene resin pellets, washing the molding with a solvent, and drying the molding.