Sealing member for a container
AssigneeStanpac Inc.
InventorsMichael P. Galda, Stephen H. Witt
Life of this patent
Estimating the term…
Abstract
A sealing member for a container has a membrane, e.g. aluminum foil, and a first sheet, e.g. polyester, part of which is bonded to the membrane. The other part of the sheet is free, so as to form a tab, to enable the seal to be detached. The seal can be attached to the neck of a bottle by a hot melt adhesive. The sheet and membrane can be stamped from a compound sheet and be of the same size.
Claims35
A sealing member adapted for securing to a lip around an opening of a container to close the container, the sealing member comprising:
- a membrane having a periphery, one side of which is for bonding to the lip of a container;
- a first sheet;
- a first layer of adhesive between the membrane and the first sheet bonding facing portions of the membrane and the first sheet together to form a composite portion, whilst leaving at least one portion of the first sheet free in a separated portion of the sealing member, the free portion of the first sheet forming a tab, wherein a part of the periphery of the first sheet forming a tab, wherein a part of the periphery of the membrane bounding that portion of the membrane forming the composite portion is common with a corresponding part of the periphery of the first sheet;
- and an additional layer of adhesive on said one side of the membrane which is adapted for bonding to the lip of the container, with the first layer of adhesive bonding the first sheet and the membrane together so strongly that, in use, the first sheet and the membrane can be removed as a unit from the lip of the container to open the container.
A sealing member as claimed in 3, 5, or 8, which includes a second line extending across the membrane between other ends of said opposite peripheral parts, so as to separate said composite portion from a second, separated portion in which a second portion of the first sheet is free from the membrane and forms a second tab.
A sealing member adapted for securing to a lip around an opening of a container to close the container, the sealing member comprising:
- a membrane, one side of which is for bonding to the neck of a container;
- a first sheet having a periphery that is substantially common with the periphery of the membrane;
- a first layer of adhesive between the membrane and the first sheet and extending between opposite parts of said common periphery and up to a line which separates a composite portion from a separated portion;
- a second sheet and a further layer of adhesive bonding the second sheet to the first sheet, with the second sheet having a periphery common to the periphery of the first sheet and the membrane, said composite portion comprising portions of the first and second sheets and the membrane bonded together by the first and second layers of adhesive, and said separated portion comprising portions of the first and second sheets bonded together by the second layer of adhesive which form a free tab and a free portion of the membrane;
- and an additional layer of adhesive on said one side of the membrane for bonding to the lip of a container, with the first layer of adhesive bonding the first sheet and the membrane together so strongly that, in use, after the additional layer of adhesive has been bonded to the lip of the container, the first sheet and the membrane can be removed as a unit from the lip of the container, to open the container.
A sealing member as claimed in claim 25, wherein the additional layer of adhesive comprises a hot melt bonding material.
Dependencies are inferred from the claim text.