Membrane closure for container
AssigneeSonoco Development, Inc.
InventorMichael T. Drummond
Life of this patent
Estimating the term…
Abstract
A membrane closure for a container is provided. The membrane closure includes an integral tab for removing the membrane closure from the container. The closure includes a lower layer, an adhesive layer, and an upper layer. The lower layer is sealed to the body of a container. The upper layer includes a score pattern that defines a tab area and a fixed area. The adhesive layer includes a first adhesive for releasably attaching the tab area to the lower layer and a second adhesive for permanently bonding the fixed area to the lower layer. The membrane closure is removable from the container by pulling on the tab area.
Claims21
A membrane closure comprising:
- a lower layer;
- an upper layer having a score pattern defining a first area and a second area, wherein the first area forms a tab;
- an adhesive layer having a pattern-printed pressure-sensitive adhesive for attaching the first area to the lower layer in a manner allowing the tab to be grasped and peeled up from the lower layer, and a pattern-printed permanent laminating adhesive for attaching the second area to the lower layer, wherein the permanent laminating adhesive is stronger than the pressure-sensitive adhesive such that the second area of the upper layer remains substantially fixed to the lower layer while the tab is being pulled away from the lower layer.
A container for storing products, the container comprising:
- a body defining an interior for storing products and an opening into the interior;
- a membrane closure sealed to the body for closing the opening, the membrane closure including:
- a lower layer having a bottom surface and a top surface, wherein the bottom surface is sealed to the body by a seam;
- an upper layer having a score pattern defining a first tab area and a second fixed area;
- an adhesive layer having a pattern-printed pressure-sensitive adhesive for attaching the first tab area to the top surface of the lower layer in a manner allowing the first tab area to be grasped and peeled up from the lower layer, and a pattern-printed permanent laminating adhesive for attaching the second fixed area to the top surface of the lower layer, wherein the permanent laminating adhesive is stronger than the first adhesive such that the second fixed area of the upper layer remains substantially fixed to the lower layer while the first tab area is being pulled away from the lower layer;
- and
- wherein at least a majority of the membrane closure is removable from the container substantially along the seam by pulling the first tab area.
A membrane closure for a container, the membrane closure comprising:
- a lower layer sealed to the container;
- an upper layer having a score pattern defining a tab area and a fixed area;
- and
- an adhesive layer having a pattern-printed low-bond-strength peelable adhesive for releasably attaching the tab area to the lower layer and a pattern-printed permanent laminating adhesive for permanently bonding the fixed area to the lower layer;
- wherein at least a portion of the lower layer is removable from the container by pulling the tab area.
Dependencies are inferred from the claim text.