Patent ID: 7871696

Claim:
A peelable sealing structure comprising: a thermoplastic polymer; and an exfoliated organoclay dispersed within at least a portion of the thermoplastic polymer, wherein the peelable sealing structure includes a sealing layer that defines a sealing surface, the sealing surface formable into a peelable seal at all temperatures within a peelable seal temperature range, the peelable seal temperature range being from a seal initiation temperature to a temperature that is at least 100 F. degrees above the seal initiation temperature wherein the seal initiation temperature is from about 170° F. to about 350° F. and the organoclay comprises platelets having an average separation of at least 20 angstroms, the sealing surface having a roughness average from about 1500 to about 5000 angstroms and the sealing layer having a tensile modulus from about 500 to about 2000 MPa.