Resealable laminate for heat sealed packaging
AssigneeAvery Dennison Corporation
InventorsXinrong Duan, Martin Daffner, ZhiJian Xue
Life of this patent
Estimating the term…
Abstract
A resealable package assembly is described. The package assembly includes a selectively positionable flap that covers an aperture or enables access through the aperture into the package. The flap and package include provisions for releasably engaging the flap to the package to seal the interior of the package. Provisions for grasping the tab and indicating whether tampering has occurred are also described.
Claims27
A resealable bag container, the container including two end sections and at least one multilayer side wall extending therebetween to thereby define a hollow interior, the container including a selectively positionable flap, the flap at least partially connected to a portion of the side wall of the container and positionable over an aperture defined in the side wall,
- the flap defining a first sealing region extending along an inner face of the flap, the flap including an adhesive layer exposed in the first sealing region;
- the side wall defining a second sealing region extending about the aperture, the side wall including a release layer exposed in the second sealing region;
- the flap configured to releasably seal with the side wall by contacting the exposed adhesive layer of the flap with the exposed release layer of the side wall;
- wherein the multilayer side wall of the container includes an adhesive layer having the same composition as the adhesive layer in the flap;
- wherein the flap further defines a flap remainder region exclusive of the first sealing region, the flap including a plurality of layers in the flap remainder region, the plurality of layers in the flap remainder region comprising:
- an outer layer, an adhesive layer adjacent to the outer layer, an inner sealing layer, a filmic layer adjacent to the inner sealing layer;
- and a release layer disposed between the adhesive layer and the filmic layer, the release layer contacting the adhesive layer, wherein the outer layer and the filmic layer exhibit a two dimensional vector delta CTE (or CTS) value Q of less than 1,000 μm/m° C., wherein an adhesive deadening material is disposed between the exposed adhesive in the flap and the exposed release layer in the side wall.
Dependencies are inferred from the claim text.