Abstract: An improved child-resistant plastic safety closure for containers has a depending skirt on it for attaching the closure to the top of a container. The top of the closure has an opening through it, which extends over a major portion of the total area of the top. A lid with upper and lower surfaces is hinged at one edge of the opening in the top for closing the opening. Tongue-and-groove inter-engagement members between the lid member and the top, around at least part of the periphery of the opening, hold the lid closed in the opening. Diametrically-opposed, spaced-apart first and second fulcrum extensions are located on opposite sides of the opening a predetermined distance from the hinged edge of the lid member; and these fulcrum extensions are located below the lower surface of the lid member when it is closed in the opening.

Abstract: A tamper-evident multiple layer induction foil liner for sealing the opening of a container comprises a "sandwich" having a first layer in the form of a fusion-bond heat seal polymer. This heat seal polymer is fusion bonded to the lip of the container opening to secure the liner to the opening. The next layer is a low-cohesive strength layer which, in turn, is bonded to an aluminum foil layer strengthed with tear-resistant backing. A pull-tab is provided to facilitate removal of the liner after the cap is removed from the container. When the pull-tab is lifted, the low-cohesive strength layer splits or shears through the application of a relatively small amount of force. Thus, the aluminum foil and tear-resistant backing readily may be removed from the container opening. It is then a simple matter to puncture the thin and mechanically weak polymer layer to uncover the container opening.