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Innerseal for a container and method of applying

  • US 5,012,946 A
  • Filed: 06/29/1990
  • Issued: 05/07/1991
  • Est. Priority Date: 02/27/1989
  • Status: Expired due to Fees
First Claim
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1. An improved easy opening innerseal for use with a container of the type having an opening defined by an upper rim, comprising:

  • a body portion having an upper surface and adapted for fitting over an upper rim of a container, said body portion including membrane means for preventing passage of fluid through said body portion, said membrane means including an adhesive layer; and

    means adapted for bonding said body portion against the upper rim of the container;

    said bonding means having a first bonding stratum for bonding against the container rim with a first bonding force and a second bonding stratum which is bonded to said adhesive layer of said membrane means on one side and adhered to said first bonding stratum on an opposite side with a second bonding force which is less than said first boding force, said first boding stratum being fabricated of a material which has a rupture strength that is less than either of said second bonding force and said first bonding force; and

    gripping means attached to an outer periphery of said body means for a user to grip while removing said innerseal from a container, whereby a first part of said first bonding stratum will delaminate from said second bonding stratum over the container rim and remain adhered to the rim when said gripping means is pulled, while a second part of said first bonding stratum will remain adhered to said second bonding stratum, thereby exposing the opening.

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