Closure arrangement for attachment to outside of bag
AssigneeReynolds Consumer Products, Inc.
InventorCatherine E. Kettner
Life of this patent
Estimating the term…
Abstract
A zipper for a recloseable bag provides a heat-settable portion for adhering the zipper to a polymeric bag at a temperature below that known in the art in order to prevent permanently sealing the bag closed inadvertantly. The zipper includes elongated base strips having flange portions for adhering the inner surface of the base strip to the outer surface of a polymeric bag. The base strip is adhered to the polymeric bag by a heat-setting compound coextruded, coated or laminated to the inner surface of the flange. The flange portions may be thinner than other portions of the base strips to permit the flange portions to be fused to the polymeric bag at a lower temperature than previously practiced.
Claims28
A zipper for a recloseable bag of a polymeric film having an interior and an exterior surface, the zipper comprising:
- first and second generally parallel extruded base strips,
- a first closure profile on the inner surface of the first base strip and a second closure profile on the inner surface of the second base strip, the closure profiles positioned above the flange portions and configured to interlock with one another above the bag films;
- and
- a heat-setting sealant compound coextruded, coated or laminated to the inner surface of the flange portions for permanently adhering the inner surfaces of the flange portions to the exterior surfaces of the film below the first and second closure profiles,
- wherein the thickness of the flange portions is less than the thickness of the base strips above the flange portions.
A zipper for a recloseable bag of a polymeric film having an interior and an exterior surface, the zipper comprising:
- first and second generally parallel extruded base strips, the base strips laterally spaced from each other, each of the base strips having an inner surface, an outer surface, and a flange portion;
- a first closure profile on the inner surface of the first base strip and a second closure profile on the inner surface of the second base strip, the closure profiles positioned above the flange portions and configured to interlock with one another above the bag films;
- a heat-setting sealant compound coextruded, coated or laminated to the inner surface of the flange portions for permanently adhering the inner surfaces of the flange portions to the exterior surfaces of the film below the first and second closure profiles, and
- a peelable seal joining the first and second base strips at a position above the first and second closure profiles.
A zipper for a recloseable bag of a polymeric film having an interior and an exterior surface, the zipper comprising:
- first and second generally parallel extruded base strips, the base strips laterally spaced from each other, each of the base strips having an inner surface, an outer surface, and a flange portion;
- a first closure profile on the inner surface of the first base strip and a second closure profile on the inner surface of the second base strip, the closure profiles positioned above the flange portions and configured to interlock with one another above the bag films;
- a heat-setting sealant compound coextruded, coated or laminated to the inner surface, of the flange portions for permanently adhering the inner surfaces of the flange portions to the exterior surfaces of the film below the first and second closure profiles, and
- a hermetic seal joining the first and second base strips at a position above the first and second closure profiles.
A zipper for attachment to a polymeric bag, the zipper comprising:
- first and second generally parallel extruded base strips, the base strips laterally spaced from each other;
- each of the base strips having an inner surface, an outer surface, a flange portion, and a first portion above the flange portion;
- the thickness of the flange portions being less than the thickness of the respective first portions;
- a first closure profile on the inner surface of the first base strip and a second closure profile on the inner surface of the second base strip, the closure profiles each positioned on one of the first portions and the closure profiles configured to interlock with one another above the bag films;
- and
- a heat-setting sealant compound coextruded, coated or laminated to the inner surface of the flange portions for permanently adhering the inner surfaces of the flange portions to exterior surfaces of the polymeric bag at a point below the first and second closure profiles, heat sealable at a temperature below the melting point of the polymeric bag, and for providing a seal between the exterior surfaces of the polymeric bag and the flange portions.
A zipper for a recloseable bag of polymeric film having an interior and an exterior surface, the zipper comprising:
- first and second generally parallel extruded base strips comprising low density polyethylene or ethylene vinyl acetate, the base strips laterally spaced from each other, the base strips each having an inner surface, an outer surface, a flange portion, and a first portion;
- a closure profile on the inner surface of each of the base strips, the closure profiles positioned above the flange portions;
- the flange portions having a thickness of from two to four mils, and the first portions having a thickness of from four to seven mils, the thickness of each of the flange portions being less than the thickness of the respective first portions;
- and
- a heat-setting sealant compound, the heat-setting sealant compound coextruded, coated or laminated to the inner surface of the flange portion for permanently adhering the inner surface of the flange portion to the exterior surface of the polymeric film.
A recloseable thermoplastic bag comprising:
- a zipper including first and second generally parallel extruded base strips, each of the first and second base strips including a flange portion;
- a first closure profile on an inner surface of the first base strip and a second closure profile on an inner surface of the second base strip, the closure profiles positioned above the flange portions and configured to interlock with one another;
- a polymeric film having an interior and an exterior surface;
- and
- a heat-setting sealant compound coextruded, coated or laminated to the inner surface of the flange portions for permanently adhering the inner surfaces of the flange portions to the exterior surface of the film below the first and second closure profiles. `wherein the thickness of the flange portions is less than the thickness of the base strips above the flange portions.
Dependencies are inferred from the claim text.