Loading patent…
AssigneePechiney Recherche
InventorsGregory K. Jones, Richard M. Ziegert
Estimating the term…
A packaging material suitable for forming a heat sealable, easy-opening and reclosable package is comprised of a heat sealable base member material having a first heat sealable surface and, secured to the heat sealable surface, an elongate, heat sealable, multilayer, flexible, peelable and reclosable, preferably coextruded, strip comprised of an interior tacky adhesive layer, first and second sealant layers each comprised of heat sealable polymer, and a rupturable layer, preferably comprised of an ionomer, proximate the tacky adhesive layer. One of the strip sealant layers is secured to the first heat sealable surface of the base member. The strip enables the base member to be heat sealed along and by means of the strip to form a package whose heat seal has sufficient initial seal strength to remain closed during handling and yet can be manually readily opened and reclosed.
A packaging material suitable for forming a heat sealable, easy-opening and reclosable package, comprising a heat sealable base member material having a first heat sealable surface and, secured to the heat sealable surface, an elongate, heat sealable, multilayer, flexible, peelable and reclosable strip comprised of an interior tacky adhesive layer, a first sealant layer disposed to one side of the tacky adhesive layer and comprised of a first heat sealable polymer, 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 layer proximate the tacky adhesive layer, each of the sealant layers being surface layers, one of the sealant layers being secured to and being heat sealable to the first heat sealable surface of the base member material, the strip enabling the base member material to be heat sealed to a heat sealable surface of itself or of another base member material or of a base structure along and by means of the strip to form a package whose heat seal through the strip has sufficient initial seal strength to remain closed during handling and yet can be manually readily opened and reclosed.
A packaging material suitable for forming a heat sealable, easy-opening and reclosable package, comprising a heat sealable multilayer flexible base member material having a first heat sealable surface and, secured to the heat sealable surface, an elongate, heat sealable, multilayer, flexible, peelable and reclosable strip comprised of an interior tacky adhesive layer, a first sealant layer disposed to one side of the tacky adhesive layer and comprised of a first heat sealable polymer, 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 layer of ionomer proximate the tacky adhesive layer and a layer comprised of a high tensile strength material, the strip having a layer to one side of the tacky adhesive layer of the strip which includes a first colorant and a layer to the other side of the tacky adhesive layer includes a second colorant which is distinguishable from the first colorant, the colorants providing a visible tamper evidence color contrasting effect in the strip heat seal area of the package when the heat seal is reclosed, which color effect is different from the color of the heat seal before it is initially opened each of the sealant layers being surface layers, one of the sealant layers being heat sealed to the first heat sealable surface adjacent or near a margin of the base member, the strip enabling the base member to be heat sealed along and by means of the strip to form a package whose heat seal has sufficient initial seal strength to remain closed during handling and yet can be manually readily opened and reclosed.
A packaging material suitable for forming a heat sealable, easy-opening and reclosable package, comprising a heat sealable multilayer flexible base member material having a first heat sealable surface and, secured to the heat sealable surface, an elongate, heat sealable, multilayer, flexible, peelable and reclosable strip comprised of an interior tacky adhesive layer, a first sealant layer disposed to one side of the tacky adhesive layer and comprised of a first heat sealable polymer, 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 ionomer layer proximate the tacky adhesive layer, each of the sealant layers being surface layers, one of the sealant layers being a blend of HDPE and EVA which is heat sealed to the first heat sealable surface of the base member by a heat seal that is wider than the width of the strip, the layer of layers to the second sealant side of the tacky adhesive having a total thickness greater than the layer or layers to the rupturable layer side of the tacky adhesive, tile strip enabling the base member to be heat sealed along and by means of the strip to form a package whose heat seal has sufficient initial seal strength to remain closed during handling and yet can be manually readily opened and reclosed.
Dependencies are inferred from the claim text.