Sealing member for a container
First Claim
Patent Images
1. A sealing member adapted for securing to the lip around an opening of a container to close the container, the sealing member comprising:
- (a) a membrane having a periphery, one side of which is for bonding to the lip of the container;
(b) a first sheet;
(c) 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 portion of the free edge of the tab is located within the periphery of the membrane, wherein the composite portion extends up to a line extending across the membrane, the line being a straight boundary, and 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 first sheet, the straight boundary between the tab and composite portion extending to the periphery of the membrane and first sheet, with the membrane and first sheet having a common periphery at ends of the boundary; and
(d) 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.
13 Assignments
0 Petitions
Accused Products
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 having one of a number of possible profiles, to enable the sealing member to be detached as a single unit. At least part of the periphery of the tab is within the periphery of the membrane, to facilitate grasping of the tab. The first sheet and the membrane or foil may have a common periphery where they are bonded together.
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Citations
31 Claims
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1. A sealing member adapted for securing to the lip around an opening of a container to close the container, the sealing member comprising:
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(a) a membrane having a periphery, one side of which is for bonding to the lip of the container; (b) a first sheet; (c) 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 portion of the free edge of the tab is located within the periphery of the membrane, wherein the composite portion extends up to a line extending across the membrane, the line being a straight boundary, and 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 first sheet, the straight boundary between the tab and composite portion extending to the periphery of the membrane and first sheet, with the membrane and first sheet having a common periphery at ends of the boundary; and (d) 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. - View Dependent Claims (2, 3, 4)
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5. A sealing member in combination with a cap, the cap comprises a cap body having a planar top wall and a side wall, wherein the sealing member is adapted for securing to the lip around an opening of a container to close the container, the sealing member comprising:
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(a) a membrane having a periphery, one side of which is for bonding to the lip of the container; (b) a first sheet; (c) 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 portion of the free edge of the tab is located within the periphery of the membrane, wherein the composite portion extends up to a line extending across the membrane, the line being a straight boundary and extending across a major portion of the membrane, and 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 first sheet, the composite portion covering a substantial portion of the membrane, and the membrane having a perimeter portion adapted for bonding to the lip of the container, with the area of the composite portion being substantially greater that said perimeter of the membrane, the first sheet and the membrane including common peripheral parts within the separated portion; and (d) 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, wherein the sealing member is mounted in the cap with the side of the sealing member remote from the membrane facing an inner face of the planar top wall, ready for mounting on a neck of a container. - View Dependent Claims (6, 7, 8, 9, 16)
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10. A sealing member in combination with a cap, the cap comprises a cap body having a planar top wall and a side wall wherein the sealing member is adapted for securing to the lip around an opening of a container to close the container, the sealing member comprising:
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(a) a membrane having a periphery, one side of which is for bonding to the lip of the container; (b) a first sheet; (c) 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 portion of the free edge of the tab is located within the periphery of the membrane, wherein the composite portion extends up to a line extending across the membrane, the line being a straight boundary and extending across a major portion of the membrane, and 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 first sheet, the composite portion covering a substantial portion of the membrane, and the membrane having a perimeter portion adapted for bonding to the lip of the container, with the area of the composite portion being substantially greater that said perimeter of the membrane, the tab including peripheral parts adjacent said line which are not common with the periphery of the membrane; and (d) 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, wherein the sealing member is mounted in the cap with the side of the sealing member remote from the membrane facing an inner face of the planar top wall, ready for mounting on a neck of a container. - View Dependent Claims (11, 12, 13, 14, 15)
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17. A sealing member adapted for securing to the lip around an opening of a container to close the container, the sealing member comprising:
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(a) a membrane having a periphery, one side of which is for bonding to the lip of the container; (b) a first sheet; (c) 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 with a dividing line between the composite and separated portions, the free portion of the first sheet forming a tab, which tab includes a gripping portion remote from the dividing line and within the periphery of the membrane, wherein the dividing line is longer than the width of the gripping portion, and wherein a part of the periphery of the membrane bounding that portion of the membrane forming the composite portion is common with the corresponding part of the first sheet, the dividing line between the separated portion and the composite portion forming a straight boundary which extends to the periphery of the membrane and first sheet, with the membrane and first sheet having a common periphery at ends of the boundary; and (d) 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. - View Dependent Claims (18, 19, 20, 21)
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22. A sealing member adapted for securing to the lip around an opening of a container to close the container, the sealing member comprising:
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(a) a membrane having a periphery, one side of which is for bonding to the lip of the container; (b) a first sheet; (c) 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 portion of the free edge of the tab is located within the periphery of the membrane, the composite portion extending up to a straight line extending across the membrane, the line being a straight boundary and all of the composite portion having a common periphery for the membrane and the first sheet, the straight boundary between the tab and composite portion extending to the periphery of the membrane and first sheet, with the membrane and first sheet having a common periphery at ends of the boundary; and (d) 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. - View Dependent Claims (27, 28, 29)
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23. In combination with a cap for fitting to the neck of a container and comprising a cap body having a planar top wall and a side wall, a sealing member adapted for securing to the lip around a neck of a container to close the container, the sealing member comprising:
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(a) a membrane having a periphery, one side of which is for bonding to the lip of the container; (b) a first sheet; (c) a first layer of adhesive bonding the 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 portion of the free edge of the tab is located within the periphery of the membrane, wherein the composite portion extends up to a straight line extending across a major portion of the membrane, wherein the composite portion covers a substantial portion of the membrane, wherein the membrane has a perimeter portion adapted for bonding to the lip of the container, with the area of the composite portion being substantially greater than said perimeter portion of the membrane, and wherein the first sheet and the membrane include common peripheral parts within the separated portion; and (d) 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; and wherein the sealing member is mounted in the cap with the side of the sealing member remote from the membrane facing an inner surface of the planar top wall of the cap, ready for mounting on a neck of a container. - View Dependent Claims (24, 25, 26, 30, 31)
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Specification