Method for injection molding an article having film covered flanges

A method of manufacturing an article having film-covered flanges comprising the steps of:

• providing a moveable press having a mold with a cavity and a core, said core having two spaced slides movable between retracted and extended positions, said slides including recessed portions;
• placing a thermoformed film within said cavity, said film having two inwardly turned spaced flange portions, the space between said flange portions defining a flange spacing;
• positioning said slides in said retracted position so that the space between said recessed portions of the retracted slides is narrower than said flange spacing;
• closing said press and moving said core into said cavity while said slides are in said retracted position;
• moving said slides from said retracted position to said extended position in said cavity, said recessed portions of said slides thereby contacting said flange portions, said core with said slides in said extended position and thermoformed film with said flange portions defining an injecting space therebetween, said injecting space extending between said flange portions and said slides;
• and
• injecting a molten plastic material into said injecting space, said plastic material adhering to said flange portions and forming said article having film-covered, inwardly turned flanges.