Abstract: A method of making and a primary laminate produced from the method including a tab used in container closure systems is provided. The laminate may be slit and punched to produce container closure liners that can be sealed to the mouth of containers. In one approach, the laminate has a colored top surface. The colored top surface of the container closure liner may be visible once the liner has been sealed to the mouth of the container.

Abstract: An apparatus for illuminating the keys on keyboards includes a relatively thin transparent material having a plurality of through apertures providing clearance for each of the keys of the keyboard that are to be received therein for illuimination. The surfaces and external edges of the relatively thin transparent material is treated to prevent light from escaping therefrom, with the internal edges of the clearance through apertures being left clear for permitting the light to excape therefrom, thereby illuminating each of the keys. A bracket is adapted to removably retained a light source in the thin transparent material and permits the orientation of the light rays emanating from the light source to enter into an edge of the relatively thin transparent material. The light source is coupled to an electrical power source power and includes a fuse and an on/off switch.