US20080240629A1 - Bag With Lateral Folds - Google Patents
Bag With Lateral Folds Download PDFInfo
- Publication number
- US20080240629A1 US20080240629A1 US10/599,204 US59920405A US2008240629A1 US 20080240629 A1 US20080240629 A1 US 20080240629A1 US 59920405 A US59920405 A US 59920405A US 2008240629 A1 US2008240629 A1 US 2008240629A1
- Authority
- US
- United States
- Prior art keywords
- bag
- folded
- fused
- end areas
- gussets
- 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
Links
- 238000003466 welding Methods 0.000 claims abstract description 11
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000013590 bulk material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Images
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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
-
- 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
- B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
- B65D33/20—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps using pressure-sensitive adhesive
-
- 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
Definitions
- the invention relates to a bag having lateral folds, which bag is made of flexible multi-layer film whose inner layer is fusible, in a configuration according to the preamble of claim 1 .
- the invention concerns the problem of a further improvement of the sealing action of the gussets at their upper ends.
- the invention solves this problem by a gusseted bag having the features of claim 1 .
- Embedding the upper edges in a fused connecting area after folding over the upper end areas of the lateral folds ensures that a complete and safe sealing action of the gussets at the upper end is present even when no special closure, be it by fusing or by an adhesive, is provided along the upper edges of the lateral folds. This is so because the fused connecting area forms a complete seal that, independent of additional measures, provides a reliable closure of the gussets at their upper edges.
- the bag wall preferably the rear bag wall
- FIG. 1 a broken-away view of the upper end area of a bag according to the invention
- FIG. 2 a section approximately along the section line II-II of FIG. 1 ,
- FIG. 3 a view similar to FIG. 1 of a modified bag embodiment
- FIG. 4 a section view along the section line IV-IV of FIG. 3 .
- FIG. 5 a section illustration similar to FIG. 4 showing a reclosable closure device at the top of the bag in open position.
- the gusseted bag illustrated in the drawing is comprised of a flexible, multi-layer, at least two-layer, film that is preferably made from thermoplastic material.
- the inner layer of the film is fusible and is comprised, for example, of a polyolefin such as polyethylene or polypropylene.
- One or several layers can adjoin outwardly and, depending on the requirements, respectively, can be a metal foil, for example, aluminum foil, and/or a polyester layer that, in turn, is not fusible but has high strength and excellent printability.
- the illustrated bag has a front wall 1 and a congruent rear wall 2 as well as lateral folds 3 , 4 inserted between them and extending from a bottom end, not illustrated, to the top end of the bag and ending in this connection at a spacing below the upper edge 5 of the bag walls 1 , 2 .
- the bag walls 1 , 2 are fused with the gussets 3 , 4 as well as with the top area of the bag that is free of gussets along their edges, in particular, by longitudinal fusing seams 6 , 7 at the edges.
- the bottom end is closed by a transverse fusing seam (not illustrated); this can be carried out before or after filling of the bag with the bulk material.
- a closure device that is formed by a welding seam that can be provided before or after filling the bag with the bulk material.
- a reclosable closure device that, in the embodiment according to FIG. 1 and FIG. 2 , is formed by pressure lock strips embodied like tongue and groove.
- this reclosable closure device 8 is comprised of lock strips 9 , 10 extending across the width of the bag; one is attached to the front wall 1 of the bag and the other to the rear wall 2 of the bag by fusing or hot sealing.
- the lock strips 9 , 10 support locking members 11 that, when pressure is applied, are transferred into a state of mutual engagement and, when a pulling force is applied, their mutual engagement is released.
- the upper end area 12 of both gussets 3 , 4 is folded over along an inwardly and slantedly downwardly extending folding edge 13 wherein folding can be done toward the front wall 1 or toward the rear wall 2 .
- the folded-over end areas 12 of the gussets 3 , 4 have the shape of a right triangle and are connected by fusing to the corresponding half of the gussets 3 , 4 facing them, as illustrated in FIGS. 2 , 4 , and 5 ; this is schematically illustrated by welding seam 14 .
- the folded-over end areas 12 are fused with their outer side to the neighboring bag wall, in the illustrated embodiment to the rear wall 2 of the bag, as schematically illustrated by the welding seam 15 in FIGS.
- an area 16 of the same-side gusset halves that adjoins the folded-over end areas 12 of the gussets 3 , 4 is also areally fused to the neighboring bag wall 2 so that the fused connecting areas include the top edges 17 of the folded-over end areas 12 .
- a reclosable closure device 18 that is formed as a three-layer lock strip extending across the entire bag width is provided in the top area of the bag.
- the two outer layers 19 , 20 are fused to the inner side of the neighboring bag wall 1 or 2 , respectively, as illustrated schematically by the fused connections 21 , 22 .
- the central layer 23 is comprised of a resin or plastic material that is permanently adhesive or sticky and can be separated by cohesion fracture into two partial layers when the central layer 23 is exposed to a pulling force by pulling apart the bag walls 1 , 2 . After removal of bulk material, the two separated partial layers can again be combined to a closed central layer 23 by applying pressure.
- the configuration according to FIGS. 3 to 5 corresponds to the bag embodiment of FIGS. 1 and 2 .
Abstract
A multi-layer film bag with fusible inner layer has gussets fused to front and rear bag walls. Upper end areas of the gussets are folded over toward one bag wall at a folding line to form folded-over end areas. The folding line is oriented at a slant inwardly and downwardly. The inner side of the folded-over end areas is fused by a first welding seam to an inner side of a neighboring gusset half. The outer side of the folded-over end areas is fused by a second welding seam to a neighboring bag wall. An area of the neighboring gusset half adjoining the folded-over end areas is fused by a third welding seam to a neighboring bag wall. The first, second, and third welding seams form a fused connection closing off the top edges of the folded-over end areas.
Description
- The invention relates to a bag having lateral folds, which bag is made of flexible multi-layer film whose inner layer is fusible, in a configuration according to the preamble of
claim 1. - In a known bag of this type (DE 20017182 U1) the halves of the lateral folds are connected at their exterior along the upper edges in order to provide a sealing action that is additionally improved by folding over the end areas and by securing the folded-over end areas to the neighboring gusset half.
- The invention concerns the problem of a further improvement of the sealing action of the gussets at their upper ends. The invention solves this problem by a gusseted bag having the features of
claim 1. With regard to further embodiments, reference is being had to claims 2 to 4. - Embedding the upper edges in a fused connecting area after folding over the upper end areas of the lateral folds ensures that a complete and safe sealing action of the gussets at the upper end is present even when no special closure, be it by fusing or by an adhesive, is provided along the upper edges of the lateral folds. This is so because the fused connecting area forms a complete seal that, independent of additional measures, provides a reliable closure of the gussets at their upper edges. At the same time, by connecting the gusset areas to the bag wall, preferably the rear bag wall, it is ensured that the upper ends of the gussets no longer project in a disturbing way into the filling space.
- Further details and effects result from the following description and the drawing in which two embodiments of the subject matter of the invention are schematically shown in more detail. The drawings show in:
-
FIG. 1 a broken-away view of the upper end area of a bag according to the invention, -
FIG. 2 a section approximately along the section line II-II ofFIG. 1 , -
FIG. 3 a view similar toFIG. 1 of a modified bag embodiment, -
FIG. 4 a section view along the section line IV-IV ofFIG. 3 , and -
FIG. 5 a section illustration similar toFIG. 4 showing a reclosable closure device at the top of the bag in open position. - The gusseted bag illustrated in the drawing is comprised of a flexible, multi-layer, at least two-layer, film that is preferably made from thermoplastic material. The inner layer of the film is fusible and is comprised, for example, of a polyolefin such as polyethylene or polypropylene. One or several layers can adjoin outwardly and, depending on the requirements, respectively, can be a metal foil, for example, aluminum foil, and/or a polyester layer that, in turn, is not fusible but has high strength and excellent printability.
- The illustrated bag has a
front wall 1 and a congruentrear wall 2 as well aslateral folds upper edge 5 of thebag walls bag walls gussets longitudinal fusing seams 6, 7 at the edges. Also, the bottom end is closed by a transverse fusing seam (not illustrated); this can be carried out before or after filling of the bag with the bulk material. - In the area of the top end of the bag there is usually a closure device that is formed by a welding seam that can be provided before or after filling the bag with the bulk material. It can also be comprised of a reclosable closure device that, in the embodiment according to
FIG. 1 andFIG. 2 , is formed by pressure lock strips embodied like tongue and groove. In detail, thisreclosable closure device 8 is comprised oflock strips front wall 1 of the bag and the other to therear wall 2 of the bag by fusing or hot sealing. Thelock strips support locking members 11 that, when pressure is applied, are transferred into a state of mutual engagement and, when a pulling force is applied, their mutual engagement is released. - The
upper end area 12 of bothgussets edge 13 wherein folding can be done toward thefront wall 1 or toward therear wall 2. The folded-overend areas 12 of thegussets gussets FIGS. 2 , 4, and 5; this is schematically illustrated bywelding seam 14. Moreover, the folded-overend areas 12 are fused with their outer side to the neighboring bag wall, in the illustrated embodiment to therear wall 2 of the bag, as schematically illustrated by thewelding seam 15 inFIGS. 2 , 4, and 5. Moreover, anarea 16 of the same-side gusset halves that adjoins the folded-overend areas 12 of thegussets bag wall 2 so that the fused connecting areas include thetop edges 17 of the folded-overend areas 12. - In this way, it is ensured that the upper ends of the
lateral folds gussets top edges 17 by a closure device, for example, an adhesive closure. - In the bag embodiment illustrated in
FIGS. 3 to 5 , areclosable closure device 18 that is formed as a three-layer lock strip extending across the entire bag width is provided in the top area of the bag. The twoouter layers bag wall connections central layer 23 is comprised of a resin or plastic material that is permanently adhesive or sticky and can be separated by cohesion fracture into two partial layers when thecentral layer 23 is exposed to a pulling force by pulling apart thebag walls central layer 23 by applying pressure. In other respects, the configuration according toFIGS. 3 to 5 corresponds to the bag embodiment ofFIGS. 1 and 2 .
Claims (5)
1.-4. (canceled)
5. A gusseted bag comprised of a flexible, multi-layer film having an inner layer that is fusible, the gusseted bag comprising:
a bottom end that is closed before or after filling with bulk material;
a top end with a closure device;
bag walls forming a front wall of the gusseted bag and a rear wall of the gusseted bag;
gussets inserted at opposed sides between the bag walls and extending from the bottom end to the top end and ending at a spacing below upper edges of the bag walls so that a top area free of the gussets is provided;
wherein the bag walls are fused with the gussets and, in the top area free of the gussets, the bag walls are mutually fused with one another along edges of the bag walls;
wherein upper end areas of the gussets have top edges and are folded over toward one of the bag walls at a folding line and form folded-over end areas, wherein the folding line is oriented in a direction toward the bottom end at a slant inwardly and downwardly;
wherein the folded-over end areas have an inner side that is fused by a first welding seam to an inner side of a neighboring gusset half of the gussets, respectively;
wherein the folded-over end areas have an outer side that is areally fused by a second welding seam to a neighboring bag wall, respectively;
wherein an area of the neighboring gusset half adjoining the folded-over end areas is areally fused by a third welding seam to a neighboring bag wall, respectively;
wherein the first, second, and third welding seams form a fused connection that includes the top edges so that the top edges are closed.
6. The gusseted bag according to claim 5 , wherein the end areas are folded over toward the rear wall.
7. The gusseted bag according to claim 5 , wherein the closure device is a reclosable closure device that extends at a spacing above the folded-over end areas across an entire bag width of the gusseted bag.
8. The gusseted bag according to claim 7 , wherein the reclosable closure device is a three-layer closure strip having outer layers fused to an inner side of the bag walls and having a central layer that is separable by cohesion fracture in two partial layers, wherein the two partial layers, when being placed against one another, are returned into a state of adhesive connection.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202004006857U DE202004006857U1 (en) | 2004-04-29 | 2004-04-29 | Satchel bags |
DE202004006857.5 | 2004-04-29 | ||
PCT/EP2005/004605 WO2005105592A1 (en) | 2004-04-29 | 2005-04-29 | Bag with lateral folds |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080240629A1 true US20080240629A1 (en) | 2008-10-02 |
Family
ID=34968367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/599,204 Abandoned US20080240629A1 (en) | 2004-04-29 | 2005-04-29 | Bag With Lateral Folds |
Country Status (8)
Country | Link |
---|---|
US (1) | US20080240629A1 (en) |
EP (1) | EP1740475B1 (en) |
JP (1) | JP2007534569A (en) |
AU (1) | AU2005237753B2 (en) |
CA (1) | CA2563328C (en) |
DE (2) | DE202004006857U1 (en) |
ES (1) | ES2292137T3 (en) |
WO (1) | WO2005105592A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080279484A1 (en) * | 2007-05-07 | 2008-11-13 | Illinois Tool Works Inc. | Leak-proofing gussets on multi-wall paper and woven polypropylene packages or bags |
US20110091140A1 (en) * | 2008-06-17 | 2011-04-21 | Bischof + Klein Gmbh & Co. Kg | Side Gusseted Bag |
US9981792B2 (en) | 2014-03-07 | 2018-05-29 | Poppack Llc | Package for humanitarian efforts with unique reclosing mechanism |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6971794B2 (en) | 2003-04-15 | 2005-12-06 | Innoflex Incorporated | Package having reclosable pour spout and method of forming same |
US20070086683A1 (en) | 2005-10-18 | 2007-04-19 | Yeager James W | Package having recloseable pour spout |
JP4806565B2 (en) * | 2005-12-19 | 2011-11-02 | トタニ技研工業株式会社 | Plastic bag |
WO2008048640A2 (en) | 2006-10-17 | 2008-04-24 | The Hudson-Sharp Machine Co. | Method of making bag with interrupted side gussets |
DK2093153T3 (en) * | 2006-12-08 | 2012-12-10 | Seisan Nipponsha Ltd | Open-function synthetic resin bag body |
JP5323249B1 (en) * | 2012-12-28 | 2013-10-23 | トタニ技研工業株式会社 | Bag making machine |
HUE029237T2 (en) | 2013-10-30 | 2017-02-28 | Mondi Halle Gmbh | Method for the production of film bags |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5364189A (en) * | 1993-07-09 | 1994-11-15 | Kabushiki Kaisha Hosokawa Yoko | Zippered bag and method of forming the same |
US6030123A (en) * | 1996-06-14 | 2000-02-29 | Kabushiki Kaisha Meiwa Pax | Side-gored bag having a first zipper tape with an area of increased thickness and with an area of progressively reduced thickness |
US20010051008A1 (en) * | 2000-06-10 | 2001-12-13 | Johannes Wedi | Gusseted bag made of a flexible weldable material |
US20030210837A1 (en) * | 2002-05-10 | 2003-11-13 | Bischof + Klein Gmbh & Co. Kg | Reclosable Packaging Container |
US20040258332A1 (en) * | 2002-07-24 | 2004-12-23 | Mikio Totani | Plastic bag and bag making machine therefor |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20008403U1 (en) * | 2000-05-10 | 2000-07-27 | Bischof & Klein | Side gusset bags made of flexible material |
-
2004
- 2004-04-29 DE DE202004006857U patent/DE202004006857U1/en not_active Expired - Lifetime
-
2005
- 2005-04-29 US US10/599,204 patent/US20080240629A1/en not_active Abandoned
- 2005-04-29 AU AU2005237753A patent/AU2005237753B2/en not_active Ceased
- 2005-04-29 ES ES05744809T patent/ES2292137T3/en active Active
- 2005-04-29 DE DE502005001192T patent/DE502005001192D1/en active Active
- 2005-04-29 WO PCT/EP2005/004605 patent/WO2005105592A1/en active IP Right Grant
- 2005-04-29 CA CA2563328A patent/CA2563328C/en not_active Expired - Fee Related
- 2005-04-29 JP JP2007509974A patent/JP2007534569A/en not_active Withdrawn
- 2005-04-29 EP EP05744809A patent/EP1740475B1/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5364189A (en) * | 1993-07-09 | 1994-11-15 | Kabushiki Kaisha Hosokawa Yoko | Zippered bag and method of forming the same |
US6030123A (en) * | 1996-06-14 | 2000-02-29 | Kabushiki Kaisha Meiwa Pax | Side-gored bag having a first zipper tape with an area of increased thickness and with an area of progressively reduced thickness |
US20010051008A1 (en) * | 2000-06-10 | 2001-12-13 | Johannes Wedi | Gusseted bag made of a flexible weldable material |
US6398412B2 (en) * | 2000-10-06 | 2002-06-04 | Bischof Und Klein & Co. Kg | Gusseted bag made of a flexible weldable material |
US20030210837A1 (en) * | 2002-05-10 | 2003-11-13 | Bischof + Klein Gmbh & Co. Kg | Reclosable Packaging Container |
US20040258332A1 (en) * | 2002-07-24 | 2004-12-23 | Mikio Totani | Plastic bag and bag making machine therefor |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080279484A1 (en) * | 2007-05-07 | 2008-11-13 | Illinois Tool Works Inc. | Leak-proofing gussets on multi-wall paper and woven polypropylene packages or bags |
US20110091140A1 (en) * | 2008-06-17 | 2011-04-21 | Bischof + Klein Gmbh & Co. Kg | Side Gusseted Bag |
US8899836B2 (en) * | 2008-06-17 | 2014-12-02 | Bischof + Klein Gmbh & Co. Kg | Side gusseted bag |
US9981792B2 (en) | 2014-03-07 | 2018-05-29 | Poppack Llc | Package for humanitarian efforts with unique reclosing mechanism |
Also Published As
Publication number | Publication date |
---|---|
AU2005237753A1 (en) | 2005-11-10 |
CA2563328A1 (en) | 2005-11-10 |
AU2005237753B2 (en) | 2010-06-03 |
EP1740475B1 (en) | 2007-08-08 |
ES2292137T3 (en) | 2008-03-01 |
DE502005001192D1 (en) | 2007-09-20 |
DE202004006857U1 (en) | 2005-09-08 |
CA2563328C (en) | 2011-11-15 |
EP1740475A1 (en) | 2007-01-10 |
WO2005105592A1 (en) | 2005-11-10 |
JP2007534569A (en) | 2007-11-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BISCHOF + KLEIN GMBH & CO. KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BILLER, CLAUS;BECKER, ANDREAS;HASSMANN, DETLEF;REEL/FRAME:018290/0596 Effective date: 20060314 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |