US20050152622A1 - End stop for reclosable pouch and method of producing same - Google Patents
End stop for reclosable pouch and method of producing same Download PDFInfo
- Publication number
- US20050152622A1 US20050152622A1 US10/755,631 US75563104A US2005152622A1 US 20050152622 A1 US20050152622 A1 US 20050152622A1 US 75563104 A US75563104 A US 75563104A US 2005152622 A1 US2005152622 A1 US 2005152622A1
- Authority
- US
- United States
- Prior art keywords
- pouch
- closure assembly
- slider
- end stop
- secured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
- B65D33/2589—Bag or slide fastener details cooperating with the slider, e.g. details for removing or installing the slider
- B65D33/259—End stops
Definitions
- the present invention relates to reclosable pouches, and more particularly, to end stops for such pouches.
- a reclosable pouch may include a closure mechanism comprising male and female closure elements or profiles attached to pouch walls.
- a pouch may have a slider disposed upon the closure elements and movable between open and closed positions.
- Various arrangements have been used to prevent the slider from sliding off of the bag.
- an end stop is disposed at the end of the closure elements to prevent the slider from being unintentionally removed from the bag.
- U.S. Pat. No. 5,189,764 discloses latching means for retaining a plastic slider in a closed position along a pair of interlocking plastic strips.
- the latching means comprises a detent on the plastic slider, which engages a protrusion on the plastic strips proximate an end of the bag.
- Richardson et al U.S. Pat. No. 5,301,394 discloses a slider having two detent elements located on opposite sides of a separator finger within the slider. When the slider is at any location along a zipper other than a fully closed position, the detent elements ride against the outside surfaces of flanges of the zipper. When the slider reaches the closed position just past the zipper flanges, the detents spring inward against the sides of the separator finger to lock the slider in the closed position.
- Morgan U.S. Pat. No. 5,442,837 discloses a thermoplastic bag having a zipper secured to a plastic web.
- the zipper includes flanges at ends of the bag having an increased height, thereby providing for adequate plastic material to form integrated end stop seals that interfere with removal of a slider from the zipper.
- the end stop seals are sufficiently strong such that additional end clips or clamps are not required.
- a reclosable pouch comprises a closure assembly secured to pouch walls.
- a slider is placed on the closure assembly and is movable between open and closed positions.
- An end stop is disposed at an end of the closure assembly. The end stop includes a first portion secured to the pouch adjacent the closure assembly and a second portion extending from the first portion and deflected into secure engagement with the pouch.
- a method of producing an end stop for a reclosable pouch includes the steps of applying a first portion of a plastic member to a surface of the pouch proximate a closure assembly and forming an end stop by attaching a second portion of the plastic member to the pouch at a position proximate a side portion thereof.
- FIG. 1 comprises a side elevational view of a reclosable thermoplastic storage pouch according incorporating an embodiment of the present invention
- FIGS. 2 and 3 comprise sectional views taken generally along the lines 2 - 2 and 3 - 3 , respectively, of FIG. 1 ;
- FIG. 4 comprises a fragmentary plan view of the storage pouch of FIG. 1 ;
- FIGS. 5A and 5B are sectional diagrammatic views of a clamping apparatus during the process of forming end stops according to the present invention.
- a reclosable pouch in the form of a thermoplastic storage bag 20 comprises a first body portion 22 and a second body portion 24 adjacent the first body portion 22 .
- the first body portion 22 and the second body portion 24 are joined to one another at first and second side edges 26 , 28 and may be integral with one another at a bottom, folded edge 30 .
- the body portions 22 and 24 may not be integral with one another and may be joined to each other at the side edges 26 , 28 and bottom edge 30 by any suitable means and/or process.
- An opening 32 ( FIGS. 1 and 2 ) is disposed at a top portion 34 of the bag 20 .
- a closure assembly 36 comprising first and second closure elements 38 and 40 , respectively, is also disposed at the top portion 34 of the bag 20 .
- a slider 50 straddles the first and second closure elements 38 and 40 and is prevented from being pulled upwardly off of the bag 20 across the closure assembly 36 by slider retention rails 52 and 54 .
- End stops 56 a , 56 b and 58 a , 58 b are disposed at ends 60 and 62 of the closure assembly 36 as noted in greater detail hereinafter and prevent the slider 50 from being pulled sideways off of the bag 20 at side edges 26 , 28 .
- flanges 64 , 66 are extruded or otherwise suitably formed and secured on lower (as seen in FIG. 3 ) portions of the closure elements 38 , 40 below the rails 52 , 54 , respectively.
- the flanges 64 , 66 are preferably made of a suitable thermoplastic, such as an olefin including homopolymers or copolymers of polyethylene or polypropylene. Also preferably (although not necessarily) the flanges 64 , 66 extend continuously from the end 60 to the end 62 across the full width of the bag 20 .
- one or both of the flanges 64 , 66 may by preformed and post-applied by adhesive or any other securing means to any portion of the bag and/or one or both flanges 64 , 66 may be discontinuous across the width of the bag.
- the discontinuous flange(s) 64 and/or 66 are preferably positioned at the ends 60 , 62 .
- base portions 70 , 72 of each flange 64 , 66 are secured as noted above either intermittently or continuously to the closure elements 38 , 40 or other portion(s) of the bag.
- free ends 74 , 76 of the flanges 64 , 66 are disposed opposite the base portions 70 , 72 and comprise enlarged or bulbous head portions.
- the end stops 56 and 58 are each created by deflecting the free ends 74 , 76 into secure engagement with portions of the closure elements 38 , 40 or other bag portions at the ends 60 , 62 .
- This fusing may be accomplished by simple transfer of heat from the heated clamping tools to the free ends 74 , 76 and/or by otherwise securing the free ends 74 , 76 , such as by adhesive, melted thermoplastic, or the like.
- the fusing or other attachment of the free ends 74 , 76 preferably is undertaken over a limited span at the ends 60 , 62 so that travel of the slider 50 is only inhibited at such ends. More particularly, the slider 50 includes feet 90 , 92 (visible in FIGS. 2 and 3 ) that are interfered with by the bulbous ends of the flanges 64 , 66 (see FIG. 2 ). This interference prevents the slider 50 from being easily removed from the bag 20 . Referring to FIG.
- the free ends 74 , 76 are disposed out of interfering relationship with the feet 90 , 92 so that the slider 50 is free to move along a slider travel path at locations intermediate the ends 60 , 62 .
- the pouch described herein advantageously includes reinforced end stops created by attaching a plastic member, comprising a first portion and a second portion, to pouch walls.
- the first portion of the plastic member is secured to the pouch adjacent a closure assembly and the second portion of the plastic member is deflected into secure engagement with the pouch at a position proximate an end thereof.
- the first portion is joined to the second portion by an intermediate portion that may be (but need not be) narrowed as compared to the first and second portion
- flange(s) 64 , 66 may be replaced by flange(s) of different cross-sectional shape and/or material, if desired.
- a single flange may be provided having a first portion secured to only one side of the bag 20 , and may further have a second portion deflected into secure engagement with a portion of the bag at ends of the bag to provide end stops.
- the first and/or second portions may continuously extend across an entire width of the bag 20 , or either may be discontinuous in the sense that the first and/or second portion may be of limited length relative to the bag width dimension.
Abstract
A reclosable pouch includes a closure assembly secured to pouch walls and a slider disposed on the closure assembly and movable between open and closed positions. The pouch further includes an end stop disposed at an end of the closure assembly and including a first portion secured to the pouch adjacent the closure assembly and a second portion extending from the first portion and deflected into secure engagement with the pouch.
Description
- The present invention relates to reclosable pouches, and more particularly, to end stops for such pouches.
- A reclosable pouch may include a closure mechanism comprising male and female closure elements or profiles attached to pouch walls. In addition, a pouch may have a slider disposed upon the closure elements and movable between open and closed positions. Various arrangements have been used to prevent the slider from sliding off of the bag. In one such arrangement, an end stop is disposed at the end of the closure elements to prevent the slider from being unintentionally removed from the bag.
- Herrington et al. U.S. Pat. No. 5,189,764 discloses latching means for retaining a plastic slider in a closed position along a pair of interlocking plastic strips. The latching means comprises a detent on the plastic slider, which engages a protrusion on the plastic strips proximate an end of the bag.
- Richardson et al U.S. Pat. No. 5,301,394 discloses a slider having two detent elements located on opposite sides of a separator finger within the slider. When the slider is at any location along a zipper other than a fully closed position, the detent elements ride against the outside surfaces of flanges of the zipper. When the slider reaches the closed position just past the zipper flanges, the detents spring inward against the sides of the separator finger to lock the slider in the closed position.
- Richardson et al. U.S. Pat. No. 5,405,478 discloses a method for applying end stops as bags are being manufactured before the bags are separated from one another. The end stops on adjacent bags are formed from a single length of plastic tubing that is secured to zipper tape carried by a plastic web forming bag walls.
- Morgan U.S. Pat. No. 5,442,837 discloses a thermoplastic bag having a zipper secured to a plastic web. The zipper includes flanges at ends of the bag having an increased height, thereby providing for adequate plastic material to form integrated end stop seals that interfere with removal of a slider from the zipper. The end stop seals are sufficiently strong such that additional end clips or clamps are not required.
- Dobreski et al. U.S. Pat. No. 5,924,173 discloses end stops in the form of plastic pins or posts having enlarged heads and wherein the pins further include linear portions that extend through ends of first and second closure strips. The enlarged heads retain the end stops on the closure strips and interfere with removal of a slider therefrom.
- According to one aspect of the present invention, a reclosable pouch comprises a closure assembly secured to pouch walls. A slider is placed on the closure assembly and is movable between open and closed positions. An end stop is disposed at an end of the closure assembly. The end stop includes a first portion secured to the pouch adjacent the closure assembly and a second portion extending from the first portion and deflected into secure engagement with the pouch.
- According to another aspect of the present invention, a method of producing an end stop for a reclosable pouch includes the steps of applying a first portion of a plastic member to a surface of the pouch proximate a closure assembly and forming an end stop by attaching a second portion of the plastic member to the pouch at a position proximate a side portion thereof.
- Other aspects and advantages of the present invention will become apparent upon consideration of the following detailed description and the attached drawings, in which like elements are assigned like reference numerals.
-
FIG. 1 comprises a side elevational view of a reclosable thermoplastic storage pouch according incorporating an embodiment of the present invention; -
FIGS. 2 and 3 comprise sectional views taken generally along the lines 2-2 and 3-3, respectively, ofFIG. 1 ; -
FIG. 4 comprises a fragmentary plan view of the storage pouch ofFIG. 1 ; and -
FIGS. 5A and 5B are sectional diagrammatic views of a clamping apparatus during the process of forming end stops according to the present invention. - Referring to
FIGS. 1 and 2 , a reclosable pouch in the form of athermoplastic storage bag 20 comprises afirst body portion 22 and asecond body portion 24 adjacent thefirst body portion 22. Thefirst body portion 22 and thesecond body portion 24 are joined to one another at first andsecond side edges edge 30. Alternatively, thebody portions side edges bottom edge 30 by any suitable means and/or process. An opening 32 (FIGS. 1 and 2 ) is disposed at atop portion 34 of thebag 20. Aclosure assembly 36, comprising first andsecond closure elements top portion 34 of thebag 20. Aslider 50 straddles the first andsecond closure elements bag 20 across theclosure assembly 36 byslider retention rails ends closure assembly 36 as noted in greater detail hereinafter and prevent theslider 50 from being pulled sideways off of thebag 20 atside edges - Referring next to
FIG. 3 , during production of bags, at least one, and preferably twoflanges FIG. 3 ) portions of theclosure elements rails flanges flanges end 60 to theend 62 across the full width of thebag 20. Alternatively, one or both of theflanges flanges ends base portions flange closure elements free ends flanges base portions FIGS. 5A and 5B , the end stops 56 and 58 are each created by deflecting thefree ends closure elements ends heated clamping tools free ends clamping tools free ends closure elements ends FIG. 2 . This fusing may be accomplished by simple transfer of heat from the heated clamping tools to thefree ends free ends - The fusing or other attachment of the
free ends ends slider 50 is only inhibited at such ends. More particularly, theslider 50 includesfeet 90, 92 (visible inFIGS. 2 and 3 ) that are interfered with by the bulbous ends of theflanges 64, 66 (seeFIG. 2 ). This interference prevents theslider 50 from being easily removed from thebag 20. Referring toFIG. 3 , at locations away from theends free ends feet slider 50 is free to move along a slider travel path at locations intermediate theends - The pouch described herein advantageously includes reinforced end stops created by attaching a plastic member, comprising a first portion and a second portion, to pouch walls. The first portion of the plastic member is secured to the pouch adjacent a closure assembly and the second portion of the plastic member is deflected into secure engagement with the pouch at a position proximate an end thereof. The first portion is joined to the second portion by an intermediate portion that may be (but need not be) narrowed as compared to the first and second portion
- It should be noted that the flange(s) 64, 66 may be replaced by flange(s) of different cross-sectional shape and/or material, if desired. Further, a single flange may be provided having a first portion secured to only one side of the
bag 20, and may further have a second portion deflected into secure engagement with a portion of the bag at ends of the bag to provide end stops. Still further, the first and/or second portions may continuously extend across an entire width of thebag 20, or either may be discontinuous in the sense that the first and/or second portion may be of limited length relative to the bag width dimension. - Numerous modifications will be apparent to those skilled in the art in view of the foregoing description. Accordingly, this description is to be construed as illustrative only and is presented for the purpose of enabling those skilled in the art to make and use the invention and to teach the best mode of carrying out same. The exclusive rights to all modifications that come within the scope of the appended claims are reserved.
Claims (19)
1. A reclosable pouch, comprising:
a closure assembly secured to pouch walls;
a slider movable on the closure assembly between open and closed positions; and
an end stop disposed at an end of the closure assembly, the end stop including a first portion secured to the pouch adjacent the closure assembly and a second portion extending from the first portion and deflected into secure engagement with the pouch.
2. The pouch of claim 1 , wherein the end stop is formed from a flange having the first portion secured to a portion of the pouch and the second portion.
3. The pouch of claim 2 , wherein the second portion of the flange is spaced from the closure assembly at locations away from the end stop such that the second flange portion does not interfere with travel of the slider at intermediate portions of a slider travel path.
4. The pouch of claim 2 , wherein the flange extends an entire width of the pouch.
5. The pouch of claim 2 , wherein the first portion of the flange extends between and proximate sides of the pouch.
6. The pouch of claim 2 , wherein the second portion of the flange comprises a bulbous head.
7. The pouch of claim 6 , wherein the bulbous head is secured to the closure assembly at an end thereof.
8. The pouch of claim 6 , wherein the bulbous head is deflected upward into secure engagement with the closure assembly.
9. The pouch of claim 6 , wherein the bulbous head is secured to the pouch only at an end thereof.
10. The pouch of claim 1 , wherein a narrowed intermediate portion connects the first portion and the second portion.
11. The pouch of claim 1 , wherein the second portion of the end stop is heat staked to the pouch.
12. The pouch of claim 1 , wherein the closure assembly includes a slider retention rail wherein the end stop is disposed below the slider retention rail.
13. The pouch of claim 1 , wherein the second portion of the end stop is adapted to prevent the slider from being removed from the closure assembly.
14. The pouch of claim 1 , wherein an end stop is disposed at both ends of the closure assembly.
15. A method of producing an end stop for a reclosable pouch, the method comprising the steps of:
applying a first portion of a plastic member to a surface of the pouch proximate a closure assembly; and
forming an end stop by attaching a second portion of the plastic member to the pouch at a position proximate a side portion thereof.
16. The method of claim 15 , wherein the step of applying includes the step of positioning the first portion a distance from the closure assembly such that the first portion does not interfere with travel of the slider at intermediate portions of a slider travel path.
17. The method of claim 15 , wherein the step of forming further includes the step of securing the second portion to the closure assembly at an end thereof.
18. The method of claim 17 , wherein the step of securing includes the step of deflecting the second portion upward into secure engagement with the closure assembly.
19. The method of claim 15 , wherein the step of forming further includes the step of fusing the second portion to the pouch.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/755,631 US20050152622A1 (en) | 2004-01-12 | 2004-01-12 | End stop for reclosable pouch and method of producing same |
ARP050100076A AR047787A1 (en) | 2004-01-12 | 2005-01-10 | EXTREME BUMPER FOR BAG THAT CAN BE CLOSED AGAIN AND PRODUCTION METHOD OF THE SAME |
TW094100735A TW200528356A (en) | 2004-01-12 | 2005-01-11 | End stop for a reclosable pouch and method of producing same |
PCT/US2005/000942 WO2005070777A1 (en) | 2004-01-12 | 2005-01-12 | End stop for a reclosable pouch and method of producing same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/755,631 US20050152622A1 (en) | 2004-01-12 | 2004-01-12 | End stop for reclosable pouch and method of producing same |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050152622A1 true US20050152622A1 (en) | 2005-07-14 |
Family
ID=34739615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/755,631 Abandoned US20050152622A1 (en) | 2004-01-12 | 2004-01-12 | End stop for reclosable pouch and method of producing same |
Country Status (4)
Country | Link |
---|---|
US (1) | US20050152622A1 (en) |
AR (1) | AR047787A1 (en) |
TW (1) | TW200528356A (en) |
WO (1) | WO2005070777A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080107363A1 (en) * | 2004-08-28 | 2008-05-08 | Murray Edward Bruce Leighton | Reclosable Bag And Zipper Therefor |
US20090142007A1 (en) * | 2007-11-21 | 2009-06-04 | S2F Flexico | Bag including closing profiles actuated by a slider |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US20080107363A1 (en) * | 2004-08-28 | 2008-05-08 | Murray Edward Bruce Leighton | Reclosable Bag And Zipper Therefor |
US8955293B2 (en) | 2004-08-28 | 2015-02-17 | Illinois Took Works Inc. | Reclosable bag and zipper therefor |
US20090142007A1 (en) * | 2007-11-21 | 2009-06-04 | S2F Flexico | Bag including closing profiles actuated by a slider |
Also Published As
Publication number | Publication date |
---|---|
TW200528356A (en) | 2005-09-01 |
AR047787A1 (en) | 2006-02-22 |
WO2005070777A1 (en) | 2005-08-04 |
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