Quantcast

Fastener closure arrangement for flexible packages

Imported: 24 Feb '17 | Published: 09 Sep '03

Panagiotis Kinigakis, Orestes Rivero

USPTO - Utility Patents

Abstract

A flexible package is provided with a shrouded slider fastener closure. A side seal forming the package is enlarged at its upper end to provide a smooth transition of product dispensed from the package, and to shield the slider during dispensing. The enlarged side seal portion is spaced from the fastener tracks. The fastener tracks are deformed to provide a stop, spaced from the side seals, to limit slider movement. A stop of reduced area, enlarging the package opening, is made possible.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a fragmentary front elevational view of a flexible package according to principles of the present invention;

FIG. 2 is a fragmentary cross-sectional view taken along the line

2

2 of FIG. 1;

FIG. 3 is a fragmentary end view indicated by line

3

3 of FIG. 1;

FIG. 4 is fragmentary front elevational view showing construction of the flexible package;

FIG. 5 is a top plan view of the slider member;

FIG. 6 is a front elevational view thereof;

FIG. 7 is an elevational view from one end thereof;

FIG. 8 is an elevational view from the other end thereof;

FIG. 9 is an end view of a fastener track sub-assembly;

FIG. 10 is a cross-sectional view, in schematic form, taken along the line

10

10 of FIG. 1 with the slider moved to the left;

FIG. 10

a is a fragmentary view, of FIG. 10 shown on an enlarged scale;

FIGS. 10

b and

10

c show alternative seal constructions;

FIG. 11 is a fragmentary front elevational view showing contents being poured from the flexible package;

FIG. 12 is a fragmentary front elevational view showing contents of a prior art package;

FIG. 13 is a fragmentary front elevational view showing a flexible package according to principles of the present invention;

FIG. 14 is a front elevational view of an alternative embodiment of a flexible package according to principles of the present invention;

FIG. 15 is a fragmentary elevational view of a shrouded flexible package according to principles of the present invention;

FIG. 16 is a fragmentary cross-sectional view taken along line

16

16 of FIG. 15;

FIG. 17 is a fragmentary end view of the package of FIG. 15;

FIG. 18 is a fragmentary elevational view of a further embodiment of a flexible package according to principles of the present invention;

FIG. 19 is a fragmentary elevational view of another embodiment of a shrouded flexible package;

FIG. 20 is a cross-sectional view taken along the line

20

20 of FIG. 15;

FIG. 21 is a cross-sectional view similar to that of FIG. 20, shown with the schematic depiction of tooling to form the flexible package;

FIG. 22 is a fragmentary elevational view of a further embodiment of a shrouded flexible package;

FIG. 23 is a fragmentary elevational view of an additional embodiment of a shrouded flexible package;

FIG. 24 is a cross-sectional view similar to that of FIG. 20 but showing an alternative shroud construction; and

FIG. 25 is a fragmentary elevational view of a further embodiment of a shrouded flexible package.

Claims

1. A reclosable flexible package comprising:

2. The reclosable flexible package of claim 1 wherein said shroud covers the substantial entirety of said fastener tracks and said slider.

3. The reclosable flexible package of claim 2 wherein said shroud defines openings for said slider.

4. The reclosable flexible package of claim 2 further comprising a peelable seal coupled between said front and said rear panels, preventing communication of said opening with said package interior.

5. The reclosable flexible package of claim 4 wherein said peelable seal comprises an hermetic seal.

6. The reclosable flexible package of claim 4 further comprising a sealing band between said fastener tracks and said peelable seal joining one of said flanges to one of said front and said rear panels.

7. The reclosable flexible package of claim 1 wherein said weakening portion includes a line of weakness extending along at least the portion of said fastener tracks.

8. The reclosable flexible package of claim 7 wherein said line of weakness extends along the substantial entirety of said fastener tracks.

9. The reclosable flexible package of claim 7 wherein said line of weakness extends across substantially the entire extent of said reclosable flexible package.

10. The reclosable flexible package of claim 1 wherein said weakening portion includes a notch formed in one side of said reclosable flexible package to initiate tearing of said reclosable flexible package.

11. The reclosable flexible package of claim 10 further comprising a line of weakness extending along said fastener tracks, cooperating with said notch to tear said reclosable flexible package, allowing said shroud to be removed from the remainder of said reclosable flexible package.

12. The reclosable flexible package of claim 11 further comprising an angled severing line between said notch and said line of weakness.

13. The reclosable flexible package of claim 12 wherein the said angled severing line crosses said fastener tracks.

14. The reclosable flexible package of claim 13 wherein the said angled severing line is a generally straight line.

15. The reclosable flexible package of claim 13 wherein said angled line includes a curved line portion.

16. The reclosable flexible package of claim 13 wherein said shroud defines an opening through which said slider protrudes, said opening connecting said angled severing line and said line of weakness.

17. The reclosable flexible package of claim 1 wherein said shroud includes an upper portion comprising a fin seal.

18. The reclosable flexible package of claim 17 wherein said shroud further includes a side fin seal above said fastener tracks, in line with the side seal trunning said front and said rear panels.

19. The reclosable flexible package of claim 1 wherein said shroud is integrally formed with said front and said rear panels, comprising monolithic portions of said front and said rear panels.

20. The reclosable flexible package of claim 1 wherein said shroud includes shroud panels separately formed and joined to said front and said rear panels.

21. The reclosable flexible package of claim 1 wherein said stops comprise deformed end portions of said fastener track.

22. The reclosable flexible package of claim 21 wherein said fastener track end portions are softened with application of ultrasonically generated heat and deformed under pressure.

23. The reclosable flexible package of claim 22 wherein the bottoms of said fastener tracks are preserved undeformed.

24. The reclosable flexible package of claim 1 further comprising flanges extending from said fastener tracks and joined to said front and said rear panels.

25. The reclosable flexible package of claim 1 wherein said fastener tracks have a bottom portion engaging said slider so as to prevent disengagement of said slider from said fastener tracks.

26. A reclosable flexible package comprising: