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US 5,882,749 AGranted
Easy-opening reclosable package
AssigneePechiney Recherche
InventorsGregory K. Jones, Richard M. Ziegert, Gregory J. Seeke, Russell P. Gehrke
Life of this patent
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AssigneePechiney Recherche
InventorsGregory K. Jones, Richard M. Ziegert, Gregory J. Seeke, Russell P. Gehrke
Estimating the term…
A heat sealed, easy-opening and reclosable package, which comprises a packaging material comprised of a heat sealable base member material, and an elongate, multilayer, flexible, peelable and reclosable strip positioned between the surfaces of juxtaposed portions of base member material and comprised of an interior tacky adhesive layer, a first and second surface sealant layers, the strip including a rupturable layer proximate the tacky adhesive layer. The base member material is heat sealed together along and by means of the strip whereat the sealant layers of the strip are heat sealed to the base member. The heat seal has sufficient initial seal strength to remain closed during handling of the package and yet is manually readily openable and reclosable. The base member material can be heat sealed together by each sealant layer being heat sealed to the same base member heat sealable surface, or by one strip sealant layer being heat sealed to one base member heat sealable surface and the other sealant layer being heat sealed to another heat sealable surface of the base member or of a base structure, which can be a container or a flat base structure.
A heat sealed, easy-opening and reclosable package, which comprises a packaging material comprised of a heat sealable base member material, and an elongate, multilayer, flexible, peelable and reclosable strip positioned between and secured to the surfaces of juxtaposed portions of base member material and comprised of an interior tacky adhesive layer, a first sealant layer comprised of a first heat sealable polymer disposed to one side of the tacky adhesive layer, and a second sealant layer disposed to the other side of the tacky adhesive layer and comprised of a second heat sealable polymer, the strip including a rupturable plastic layer proximate the tacky adhesive layer, the base member material being heat sealed together including along and by means of the strip whereat the sealant layers of the strip are heat sealed to the base member, said heat seal having sufficient initial seal strength to remain closed during handling of the package and yet being manually readily openable and reclosable.
The package of 2 wherein the second sealant layer is comprised of EVA.
A heat sealed, easy-opening and reclosable package having a cavity, which comprises a packaging material comprised of a base member material having a first heat sealable surface and, secured to the heat sealable surface, an elongate, multilayer, flexible, peelable and reclosable strip positioned between and secured to juxtaposed portions of base member material and comprised of an interior tacky adhesive layer, a first sealant layer comprised of a first heat sealable polymer disposed to one side of the tacky adhesive layer, and a second sealant layer disposed to the other side of the tacky adhesive layer and comprised of a second heat sealable polymer, the strip including a rupturable plastic layer proximate the tacky adhesive layer, the base member material being heat sealed together including along and by means of the strip whereat each sealant layer of the strip is heat sealed to the first heat sealable surface of the base member, said heat seal having sufficient initial bond strength to remain closed during handling of the package and yet being manually readily pulled apart to initially open the package, the rupturable layer thereby being ruptured and pulled apart from the tacky adhesive layer to leave a surface of tacky adhesive material exposed along the opened area of the strip, the strip also enabling the package to be reclosed by the application of manual pressure upon a portion of the package against exposed tacky adhesive.
Dependencies are inferred from the claim text.