Storage container lids

摘要

The invention is directed to storage containers and lids for storage containers which provide for a secure closure and a storage container which is airtight and leakproof. The lid includes a generally U-shaped closure made of a plastic material for securing to a container base; a center window also made of a plastic material and preferably the same as the U-shaped closure; and a thermoplastic material which provides for a sealing gasket on the underside of the U-shaped closure for mating with the container base and a perimeter seal on the outside of the U-shaped closure and around the outer circumference of the center window. The lid may further include a gripping tab made at least in part of thermoplastic material in the lid corner for opening or closing the container, and wings made of a thermoplastic material in one or more portions or corners of the lid.

主权项

1. A storage container lid comprising
a substantially U-shaped closure made of a plastic material structured to secure the lid to a container base, a center window made of a plastic material, a one piece combined gasket and perimeter seal structure joining said U-shaped closure and said center window, wherein said one piece combined gasket and perimeter seal structure is made of a thermoplastic material and is structured to serve as (1) a sealing gasket positioned below said U-shaped closure and configured to mate with a vertical wall portion of the container base when the lid is sealingly seated on the container base, and (2) a perimeter seal on an outside portion of the U-shaped closure and configured to extend around the outer circumference of the center window, and wherein said one piece combined gasket and perimeter seal structure is fused to said U-shaped closure and to said center window at respective ends of said one piece combined gasket and perimeter seal structure to join together said U-shaped closure and said center window; wherein said plastic material of said U-shaped closure is a hard plastic material and said thermoplastic material of said one piece combined gasket and perimeter seal structure is soft in comparison to said plastic material.