Patent ID: 6695476
Filing Date: 2004-02-24
Classification: B65D

Abstract:
A bag comprising at least one sheet of flexible material assembled to form a semi-enclosed container having an opening defined by a periphery, said bag having a fill direction generally perpendicular to said opening, said bag comprising a closure zone, said closure zone including a first region and a second region, said first region undergoing a substantially molecular-level deformation and said second region initially undergoing a substantially geometric deformation when said sheet is subjected to applied tensile forces, said closure zone of said bag being extensible in said fill direction in response to tensile forces applied generally parallel said fill direction;wherein a knot formed from a first portion of the closure zone and a second portion of the closure zone remains tied in response to tensile forces applied to the knot, wherein the closure zone is juxtaposed with the periphery, and wherein the closure zone further comprises a third region extensible at an angle of approximately 22 to 67Â° relative to said fill direction in response to tensile forces applied at a like angle of approximately 22 to 67Â° relative to said fill direction.