Flexible package with easy opening peel seal
AssigneeParamount Packaging Corporation
InventorJohn S. Davis
Life of this patent
Estimating the term…
Abstract
A package made of a flexible laminate has a heat-fusible seal of a strength sufficient to retain vacuum within the package and to withstand handling, but capable of being broken by hand manipulation.
Claims12
A package comprising a body member having side and bottom walls, said body member comprising a flexible laminate having a barrier ply and a sealable ply, said body member having a mouth portion and a hand-peelable seal for said mouth portion, said seal comprising a heat-fusible plastic polymeric coating so constructed and arranged as to have, when sealed, strength sufficient to retain vacuum within said package and to withstand stress attendant handling and shipping of said package, the strength of said seal being such that said seal may be broken by hand manipulation, and said side walls providing gusset portions for said mouth portion, said heat-fusible coating being applied to the inner surface of said body member at said mouth portion, said hand peelable seal encompassing said gusset portions as well as the other portions of said mouth portion.
A method of making a web of flexible material for packages of the kinds having a body member and a nonresealable peel seal, comprising the steps of providing a first web of material for forming a barrier ply for the body member, providing a second web of material for forming an interior sealing ply for the body member, laminating said first web to said second web, printing on one surface of said first web, laminating to said first web an exterior ply, and applying to the surface of said sealing ply opposite to the surface of the barrier ply to which said printing is applied material for forming a seal, said step of applying material for forming a seal being so performed as to position said material in register with the printing.
Dependencies are inferred from the claim text.