Abstract: A method and system for providing plastic injection molded parts with thin wall sections or portions. The mold has one or more plunger or piston members which operate to reduce the size of the mold cavity and thus the thickness of wall sections or portions of the molded parts, preferably at 70-75% or more of their surface area. Commercially acceptable parts with wall thicknesses on the order of 2.5 mm can be provided with the present invention.

Abstract: A masking system is provided that includes a supply roll of masking material, supported by a first roll support. The supply roll is rotatable on the first roll support, which allows the masking material to be dispensed. A take-up roll is provided to receive masking material after it has been used. A masking arm is positioned on an inside surface of the masking material, and contacts a portion of a mold to capture the masking material between the masking arm and the mold, thereby sealing off a portion of the mold during a coating process. After the coating process, the take-up roll is rotated, thereby dispensing new masking material from the supply roll.