Back to results
US 2003/0169948 A1Published application
Reclosable packaging having hermetic zipper and related method of manufacture
OwnerEric J. Fenzl, Basil C. Lintoninventors
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerEric J. Fenzl, Basil C. Lintoninventors
Estimating the term…
A reclosable package or bag having a mouth with a hermetic plastic zipper installed therein. The hermetic zipper has first and second interlockable profiled structures connected by a frangible connection and having no flanges. The package or bag is constructed such that the frangible connection resides on the product side of the zipper, i.e., the frangible connection extends inside the receptacle of the package or bag, when the package is in an unopened state, i.e., when the zipper is closed. Preferably, the first interlockable profiled structure has at least one male member with an expanded head and the second interlockable profiled structure has at least one female member with a groove for receiving the expanded head of a male member.
A package comprising a receptacle having a mouth at an upper end, and a plastic hermetic zipper attached to said mouth, wherein said hermetic zipper comprises first and second interlockable profiled structures without flanges and a frangible connection connecting said first interlockable profiled structure to said second interlockable profiled structure, wherein said frangible connection extends inside said receptacle on a product side of said zipper when said zipper is closed.
A method of manufacturing a plastic zipper comprising the steps of:
A method of manufacturing a plastic zipper comprising the step of concurrently continuously extruding first and second interlockable profiled structures and a web out respective die orifices arranged so that said continuously extruded first interlockable profiled structure lands on a first lateral portion of said web, and said continuously extruded second interlockable profiled structure lands on a second lateral portion of said web, said first and second lateral portions of said web being separated by an intermediate lateral portion of said web.
A plastic zipper comprising first and second interlockable profiled structures without flanges and a frangible connection which connects said first interlockable profiled structure to said second interlockable profiled structure, said frangible connection being disposed on one side of said first and second interlockable profiled structures when said zipper is closed.
A package comprising a receptacle having a mouth at an upper end, first and second interlockable profiled structures respectively attached to opposing sides of said mouth and interlocked with each other, and a frangible connection connected to said first interlockable profiled structure along a first juncture, connected to said second interlockable profiled structure along a second juncture, and connected to said receptacle along third and fourth junctures, wherein said frangible connection hermetically seals an inner volume of said receptacle and said first and second interlockable profiled structures do not have flanges.
Dependencies are inferred from the claim text.