초록 ▼

A reclosable packaging having a slider/zipper assembly and a sealed header. The header has a tear notch for initiating tearing of the header material and a line of weakness for continued tearing of the header material at an elevation which is lower than the top of the slider. Most preferably, the li

A reclosable packaging having a slider/zipper assembly and a sealed header. The header has a tear notch for initiating tearing of the header material and a line of weakness for continued tearing of the header material at an elevation which is lower than the top of the slider. Most preferably, the line of weakness is lower than the bottom of the slider. When the header is torn along the line of weakness, at least part of the slider is exposed and accessible to the consumer. In one embodiment, the tear notch is located in a side edge at an elevation higher than the top of the slider. A slit is provided which traverses a range of elevations encompassing a first elevation near an elevation of the tear notch and a second elevation near an elevation of the line of weakness.

대표청구항 ▼

The invention claimed is: 1. A package comprising a receptacle having a mouth at an upper end, a flexible zipper attached to said mouth and comprising first and second fastener strips, a slider movably mounted to said zipper for alternately opening or closing portions of said first and second faste

The invention claimed is: 1. A package comprising a receptacle having a mouth at an upper end, a flexible zipper attached to said mouth and comprising first and second fastener strips, a slider movably mounted to said zipper for alternately opening or closing portions of said first and second fastener strips depending on the direction of movement of said slider relative to said zipper, said slider having a top at a first elevation and a bottom at a second elevation lower than said first elevation, and a header enclosing said zipper and said slider, wherein said header comprises first and second side edges and first and second walls each extending from said first side edge to said second side edge, said first wall of said header comprising: a first line of weakness having a straight portion parallel to said zipper when said zipper is straight, said first line of weakness extending across said header at a third elevation that is lower than said second elevation; and a first slit defined in said first header wall by a pair of internal edges of equal length and separated by substantially no gap when said internal edges lie in a plane, said internal edges meeting at first and second termination points at opposite ends of said first slit, said first termination point being at a fourth elevation higher than said first elevation, and said second termination point being at a fifth elevation lower than said second elevation and at or near said third elevation. 2. The package as recited in claim 1, wherein said first slit is inclined at an angle in a range of 30 to 90 degrees relative to a line of said zipper. 3. The package as recited in claim 1, wherein said header further comprises a seal for sealing said first and second walls together. 4. The package as recited in claim 1, wherein said header is integrally formed with said receptacle. 5. The package as recited in claim 1, wherein said second wall of said header comprises: a second line of weakness having a straight portion parallel to said zipper when said zipper is straight and extending across said header at a sixth elevation that is lower than said second elevation; and a second slit having first and second termination points at opposite ends thereof, neither of said first and second termination points of said second slit being located at one of said first and second side edges, said first termination point of said second slit being at a seventh elevation higher than said first elevation, and said second termination point of said second slit being at an eighth elevation lower than said second elevation and at or near said sixth elevation, said second slit being defined in said first header wall by a pair of mutually parallel internal edges of equal length and separated by substantially no gap when said internal edges lie in a plane. 6. The package as recited in claim 5, wherein said first and second lines of weakness are overlapping. 7. The package as recited in claim 5, wherein said first and second slits are overlapping. 8. The package as recited in claim 5, wherein lower end points of said first and second slits are closer together than are upper end points of said first and second slits. 9. The package as recited in claim 1, wherein said first header wall further comprises a tear initiator that starts at said first side edge at a sixth elevation higher than said first elevation. 10. The package as recited in claim 9, wherein said tear initiator is a tear notch. 11. The package as recited in claim 1, wherein said first line of weakness is a scoreline. 12. A package comprising a receptacle having a mouth at an upper end, a flexible zipper attached to said mouth and comprising first and second fastener strips, a slider movably mounted to said zipper for alternately opening or closing portions of said first and second fastener strips depending on the direction of movement of said slider relative to said zipper, said slider having a top and a bottom, and a header enclosing said zipper and said slider, wherein said header comprises first and second side edges and first and second walls each extending from said first side edge to said second side edge, said first wall of said header comprising: a tear initiator that starts at said first side edge and terminates at a point located at a first elevation that is higher than said slider top; a line of weakness having a straight portion parallel to said zipper when said zipper is straight, said line of weakness extending across said header at a second elevation that is lower than said slider bottom; and a slit defined in said first header wall by a pair of internal edges of equal length and separated by substantially no gap when said internal edges lie in a plane, said internal edges meeting at first and second termination points at opposite ends of said slit, neither of said first and second termination points being located at one of said first and second side edges, said first termination point being at or near said first elevation, and said second termination point being at or near said second elevation. 13. The package as recited in claim 12, wherein said tear initiator is a tear notch. 14. The package as recited in claim 12, wherein said line of weakness is a scoreline.