US20070267414A1 - Package - Google Patents

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Publication number
US20070267414A1
US20070267414A1 US11/803,341 US80334107A US2007267414A1 US 20070267414 A1 US20070267414 A1 US 20070267414A1 US 80334107 A US80334107 A US 80334107A US 2007267414 A1 US2007267414 A1 US 2007267414A1
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United States
Prior art keywords
package
aeration
opening
chambers
package body
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
Application number
US11/803,341
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English (en)
Inventor
Andreas Ewerszumrode
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haver and Boecker OHG
Original Assignee
Haver and Boecker OHG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Haver and Boecker OHG filed Critical Haver and Boecker OHG
Assigned to HAVER & BOECKER OHG reassignment HAVER & BOECKER OHG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EWERSZUMRODE, ANDREAS
Publication of US20070267414A1 publication Critical patent/US20070267414A1/en
Abandoned legal-status Critical Current

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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
    • B65D33/01—Ventilation or drainage of bags

Definitions

  • the present invention relates to a package for feed material, in particular a bag and preferably a gusseted bag, consisting of sheet plastic to protect the feed material from moisture and comprising a de-aerating means for excess air to escape from the package.
  • German document DE 10 2004 026 538 A1 discloses a plastic bag for filling with bulk material having a multi-layer overlapping region provided in the top surface of the bag, comprising a de-aeration channel between first de-aeration openings in the inner plastic layer and second de-aeration openings in the outer plastic layer.
  • the first de-aeration openings positioned in the center of the bag surface in the inner plastic layer are staggered in respect of the height relative to the second de-aeration openings in the outer plastic layer.
  • the vertical staggering of the de-aeration openings toward the inside and toward the outside of the bag serves to prevent moisture from entering for some time
  • the distance between the outer and the inner de-aeration openings is less than half the bag length, the effect of sealing is limited in time.
  • a package for feed material according to the invention is in particular configured as a bag, comprising at least one package body of a sheet made of plastic and at least one de-aerating means with at least one de-aerating area where an inner sheet layer and an outer sheet layer are provided.
  • the inner sheet layer and outer sheet layer form a de-aeration channel to connect at least one inner de-aeration opening that is in connection with the interior of the package body with at least one outer de-aeration opening that is in connection with the environment of the package body.
  • the de-aeration channel comprises at least two separate chambers being in connection with one another through at least one overflow opening wherein the inner de-aeration opening is provided at the first chamber and the outer de-aeration opening, at the second chamber so as to increase water tightness.
  • the package according to the invention comprises gussets in particular when empty, being provided with welding corners in particular in the region of the gussets. In this way a rectangular shape and good stacking capability of the filled package is ensured.
  • the invention has numerous advantages.
  • One significant advantage is that moisture must cover a considerably longer distance before entering into the package interior since the de-aeration channel comprises a first chamber and a second chamber. Any moisture entering must thus firstly travel the length of the second chamber, travel from the second chamber through the overflow opening to enter the first chamber and then travel the length of the first chamber before the entering moisture reaches the package interior. In this way, the protection achieved from moisture is higher than had been the case in the prior art.
  • the first and second chambers may be positioned adjacent to and separated from one another via a separating seam.
  • the separating seam may extend over a substantial portion of the length of the adjacent chambers where only the region of the overflow opening remains open.
  • Adjacent chambers are easy to manufacture, in particular with the package and the de-aerating device comprising two overlapping sheet layers and the package and the chambers of the de-aerating means being manufactured with welded seams or bonded seams or the like.
  • a release agent or a separating layer or the like may be provided in the region of the overflow opening or openings and/or in the region of the outer de-aeration opening.
  • the material of the separating layer or release agent can be selected so as to prevent the two sheet layers from welding or bonding together in the region of the separating layer. This is very advantageous since a simple manufacturing method allows to provide air passage openings at positions in the package intended therefor.
  • the material used for the separating layer or the release agent may contain e.g. silicone or polytetrafluoroethylene (Teflon; PTFE) or consist of another suitable material.
  • Teflon polytetrafluoroethylene
  • the separating seam may be applied in specific spots so as to leave the de-aeration openings and the overflow opening open.
  • a release agent allows to omit the indexing of an additional material for bonding the surfaces such that a continuous joining seam of the additional material may be employed.
  • the release agent prevents the sheet layers from bonding with one another in the coated spots to thus generate the desired de-aeration and overflow openings.
  • the additional material joined with the non-coated sheet forms a sealing lip in the region of the opening to considerably impede any entering of moisture.
  • a plurality of inner de-aeration openings may be provided which are in particular configured as de-aeration slits.
  • the inner de-aeration openings are particularly preferably provided at one end of the first chamber which end is preferably provided near the front faces of the package.
  • At least one outer de-aeration opening may be provided at one end of the second chamber and the outer de-aeration opening is in particular positioned in the vicinity of one end face of the package.
  • Two or more outer de-aeration openings may be provided wherein one of which will be positioned in the vicinity of one end face of the package. Positioning the outer de-aeration opening or openings in the vicinity of the front or end faces of the package is also very advantageous since this allows trapped air to readily escape even from stacked packages, such that packages stacked e.g. on a pallet can de-aerate properly.
  • the overflow opening may be positioned between the first chamber and the second chamber in a central region of the package body. This means that the overflow opening is positioned e.g. about at the height of the flat package top face in the center of the top face.
  • the inner de-aeration openings and/or the outer de-aeration openings may be provided at a height distance from the flat package top face wherein it is particularly preferred that the height distance of the inner and/or outer de-aeration openings from the flat package top face is larger than the height distance from the end seam which is provided at half height of the package body.
  • the height is measured here perpendicular to the longitudinal direction of the package and perpendicular to the end seams of the package.
  • the height distance of the inner de-aeration openings and/or the outer de-aeration openings from the flat package top face may be between 25 and 95% and in particular between 50 and 75% of the half-height of the package body in the filled state.
  • a package according to the presently disclosed specific embodiment requires any moisture entering to always overcome a height difference, independently from the storage position of the bags since the height difference is positive between the outer de-aeration opening and the overflow opening or between the overflow opening and the inner de-aeration opening.
  • the outer and the inner de-aeration openings may be positioned adjacent relative to one another.
  • Preferred configurations of the invention provide for the length of the de-aeration channel to be greater than the length of the package body. This is possible through the two chambers of the de-aeration channel whose total length may exceed that of the package, which is not possible with the bag known from the prior art. A longer de-aeration channel allows better protection from entering moisture.
  • both the inner and the outer de-aeration openings may be spaced apart from the flat top surface of the package body and provided in the vicinity of one end, while the overflow opening is provided between the first and the second chamber of the de-aeration channel in the vicinity of the other end and spaced apart from the flat top surface of the package body.
  • the de-aeration channel may include three or more chambers interconnected in a meander pattern. This configuration allows for a particularly long de-aeration channel.
  • All of the embodiments of the invention provide for the separating seam between the chambers to be preferably welded or bonded.
  • the outer de-aeration opening in particular may be provided with a sealing lip to improve protection against water entering.
  • the sealing lip may be manufactured for example by inserting an extrusion seam or a bonding seam or the like between the sheet layers during manufacturing of the package.
  • the extrusion seam forms a stable connection of the two sheet layers up to the area of the de-aeration opening where a separating layer or a release agent is provided to prevent that the extrusion seam or bonding seam adheres to any one of the two sheet layers.
  • the extrusion seam forms a sealing lip at the de-aeration opening to protect the opening from entering moisture.
  • All of the embodiments of the invention preferably provide depressions and/or elevations to ensure that the de-aeration channel fulfills its de-aeration function.
  • the depressions and/or elevations are preferably embossed and may be provided in the entire de-aeration channel or only in specific portions thereof. Webs or other spacers may be provided to keep the sheet layers spaced apart.
  • Preferred specific embodiments of the invention provide for the package to comprise gussets and corner joints at the package corners to ensure a generally rectangular shape of the filled package.
  • At least one outer de-aeration opening may be provided at an end seam of the package.
  • All of the embodiments allow to provide at the de-aeration openings or at specific points in the de-aeration channel a fleece or a hygroscopic substance which when moisture enters, take up such moisture e.g. by swelling, or which cause the de-aeration channel to bond together.
  • de-aeration channel in the sense of this application is understood to mean a structure enclosed by walls which may serve to convey air.
  • FIG. 1 is a schematic top view of a package according to the present invention
  • FIG. 2 is a general, simplistic sectional longitudinal view of the package in FIG. 1 ;
  • FIG. 3 is a simplistic sectional side view of the package in FIG. 1 ;
  • FIG. 4 is a simplistic top view of another package according to the invention.
  • FIG. 5 is a third embodiment of a package according to the invention.
  • FIG. 6 is a general, simplistic sectional side view of a fourth embodiment of the package according to the invention.
  • FIG. 7 is a cutaway, simplistic side view of the principle of a fifth embodiment of the package according to the invention.
  • FIGS. 1 through 3 illustrate a first embodiment of a package 1 according to the invention configured as a bag, comprising a package body 2 provided with gussets 3 made of a plastic sheet 4 .
  • the package 1 serves to take feed material, in particular bulk material. In filling bulk material, air will as a rule enter the package along with the product to be bagged. Furthermore, an air bubble tends to form in the top region as the bag is closed. To allow the air present in the package to escape from the closed package 1 , a de-aeration means 12 is provided on the flat surface of the package 1 . In the de-aeration area 13 , an inner sheet layer 14 that is adjacent to the product present in the interior volume of the package 1 overlaps with an outer sheet layer 15 that is adjacent to the environment.
  • a de-aeration channel 16 connecting a plurality of inner de-aeration openings 17 with one or two outer de-aeration openings 18 , thus providing a flow channel for the escaping air.
  • the de-aeration channel 16 comprises a first chamber 19 and a second chamber 20 which in the embodiment of FIG. 1 are interconnected through an overflow opening 21 in a central region of the package surface.
  • the air present in the package and entering the first chamber 19 of the de-aeration channel 16 through the inner de-aeration openings 17 is conveyed along the first chamber 19 of the de-aeration channel 16 up to the overflow opening 21 where it moves into the second chamber 20 of the de-aeration channel 16 where it is conveyed up to the outer de-aeration openings 18 positioned in the region of the outer edge of the second chamber 20 , where it is transmitted to the exterior.
  • the two chambers 19 and 20 of the de-aeration channel 16 separated by a connecting seam 22 create a longer de-aeration channel than would be possible with only one de-aeration channel with only one chamber. In this way, security against moisture or water entering from outside is improved.
  • the inner de-aeration openings 17 are configured as short slits whose length in the present embodiment is not more than 5 mm.
  • the overflow opening 21 is approximately 100 mm in length given a length of the bag of e.g. 40-80 cm.
  • the regions of the overflow opening 21 and the outer de-aeration openings 18 may each be provided with a separating layer 23 in the form of a release agent which in manufacturing the package 1 prevents the inner sheet layer 14 and the outer sheet layer 15 from welding or bonding together near the openings to ensure good function of the de-aeration channel 16 .
  • the de-aeration region 13 may be provided with depressions and/or elevations 24 in the first chamber 19 and the second chamber 20 , which are e.g. embossed to thus ensure that air is conveyed through the de-aeration channel 16 .
  • the depressions and/or elevations 24 serving as spacers are distributed over the entire surface of the de-aeration channel 16 .
  • the region of the de-aeration opening 18 a bead between the inner sheet layer 14 and the outer sheet layer 15 to further improve the sealing effect against water entering.
  • the package 1 achieves reasonable de-aeration in storage or even with pressure applied although the de-aeration channel 16 is designed clearly longer than de-aeration channels known in the prior art. This effect is caused among other things in that the inner de-aeration openings 17 and also the outer de-aeration openings 18 are positioned in a region adjacent to the end seams 5 and 10 of the package 1 .
  • the inner de-aeration openings 17 and the outer de-aeration openings 18 are furthermore in particular not positioned on the top package surface but in the vicinity of the end seams where the local surface is inclined horizontally or towards the top package surface. This creates a height difference 27 between the overflow opening and the layer of the outer de-aeration openings 18 or the inner de-aeration openings 17 which considerably improves the sealing effect against moisture entering from outside.
  • the arrows 25 show the path of air escaping from the inner de-aeration opening 17 through the chamber 19 and the overflow opening 21 , and through the chamber 20 and the outer de-aeration openings 18 to the outside.
  • the package corners 8 are welded off by way of corner joints 7 .
  • the welded off corners 8 may be provided with openings 9 which in conjunction with the corners 8 and the end seam 5 or 10 may form a carrier element 11 for the user to comfortably carry the package 1 .
  • the packages according to the other embodiments are also provided with welding corners to achieve good stacking capability wherein the welding seams have been omitted in the Figures for the sake of clarity.
  • FIG. 2 The simplistic and only general illustration of the bag 1 according to the invention shown in FIG. 2 in a sectional longitudinal view shows the end seams 5 and 10 at the two ends 6 of the package 1 .
  • FIG. 2 does not show the inner de-aeration openings 17 also provided at the height of the outer de-aeration openings 18 to guarantee a height difference 27 independent of the bag position.
  • FIG. 3 shows a schematic sectional side view where the parallel chambers 19 and 20 of the de-aeration channel between the outer sheet layer 15 and the inner sheet layer 14 can be seen.
  • FIG. 4 shows another embodiment of a package 1 according to the invention in a simplistic top view. Unlike the embodiment in FIG. 1 , the embodiment of FIG. 4 provides the inner de-aeration openings 17 and the outer de-aeration opening 18 only at one end 6 of the package 1 . This allows that a particularly long de-aeration channel 16 is formed of the chambers 19 and 20 which may extend over nearly double the bag length. Where inner de-aeration openings 17 are provided at one end of the package only, these are preferably positioned in the vicinity of the head seam since after filling an air bubble will form there which can then readily drain off.
  • the embodiment of a package 1 according to the invention illustrated in FIG. 5 is provided with three chambers 19 , 20 and 26 which combined form the de-aeration channel 16 .
  • the third chamber 26 is positioned between the first chamber 19 and the second chamber 20 , thus extending the de-aeration channel 16 overall.
  • the longer the overlapping area L of the intermediate seams and the narrower the width A of the intermediate chamber 26 the better the sealing effect against entering moisture.
  • the inner de-aeration openings 17 and the outer de-aeration openings 18 are also provided in end regions of the package 1 so as to ensure reasonable de-aeration even for stacked packages.
  • the separating seams 22 a and 22 b are not interrupted for forming overflow openings 21 but the separating seams terminate before the ends of their chambers so as to form overflow openings 21 at the ends of the chambers.
  • both package ends may be provided with outer de-aeration openings 18 and/or inner de-aeration openings 17 .
  • FIG. 6 illustrates a fourth embodiment of a package according to the invention in a general and simplistic sectional side view.
  • the package body 2 , the outer sheet layer 15 and the inner sheet layer 14 are formed integrally.
  • the first and second chambers 19 , 20 are positioned adjacent to one another.
  • the chambers extend one above the other at least in part and, depending on the configuration they may be not at all adjacent.
  • a separate interlayer 28 between the outer sheet layer 15 and the inner sheet layer 14 separates the two chambers 19 and 20 from one another.
  • the individual chambers are subdivided by means of seams 29 at the sheet.
  • the interlayer 28 is also formed integrally of the sheet such that the package body 2 , the outer sheet layer 15 and the inner sheet layer 14 and the interlayer 28 consist of one piece of sheet.
  • the individual sheet layers 14 , 15 , and 28 are created by folding over and stacking the sheet and using suitable intermediate or bonded seams 29 .
  • the intermediate or bonded seams 29 separate and seal the chambers 19 and 20 from the side faces, except in those points where a separating layer 23 is provided (see FIG. 1 ).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
US11/803,341 2006-05-13 2007-05-14 Package Abandoned US20070267414A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006022815.4 2006-05-13
DE102006022815 2006-05-13

Publications (1)

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IT (1) ITMI20070175U1 (it)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2179937A1 (de) 2008-10-27 2010-04-28 Sachsa Verpackung GmbH Verpackungssack zur Verpackung von Packgut
US20110308153A1 (en) * 2010-06-17 2011-12-22 Jones Lee C Grow Bag System With Irrigation
US20120261278A1 (en) * 2009-10-26 2012-10-18 Mandzsu Zoltan packaging container with overpressure relief, packing method and system
US20140241649A1 (en) * 2011-10-06 2014-08-28 Nordfolien Gmbh Packaging container that can be ventilated
US20160001909A1 (en) * 2013-02-27 2016-01-07 Haver & Boecker Ohg Packaging machine and method for filling open bags
WO2018060277A1 (de) * 2016-09-27 2018-04-05 Windmöller & Hölscher Kg Kunststoffsack, insbesondere ffs-sack, sowie verfahren und vorrichtung zur herstellung und zum befüllen eines sacks
US11401076B2 (en) 2016-09-27 2022-08-02 Windmöller & Hölscher Kg Valve bag and method and system for producing a valve bag

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370780A (en) * 1965-10-22 1968-02-27 Continental Can Co Bag with self-venting back seam
US4057144A (en) * 1975-01-17 1977-11-08 Schuster Samuel J High strength bag for storing materials in sterile condition
US5399022A (en) * 1993-02-25 1995-03-21 Ab Specialty Packaging, Inc. Venting structure for a multiple ply bag
US5553942A (en) * 1994-03-11 1996-09-10 Robert Bosch Gmbh Laminate for producing packaging containers
US5655842A (en) * 1993-12-28 1997-08-12 Packs Co., Ltd. Wrapping device
US5893461A (en) * 1997-04-07 1999-04-13 Fres-Co System Usa, Inc. Pressure vacuum release hermetic valve for flexible packages
US5902046A (en) * 1997-07-09 1999-05-11 Daiwa Gravure Co., Ltd. Packaging bag
US6170985B1 (en) * 1997-10-15 2001-01-09 Lyle F. Shabram, Jr. Bag with venting means
US20020009240A1 (en) * 1999-08-13 2002-01-24 Anderson Brent G. Storage bag with one-way air valve
US20040057636A1 (en) * 2002-09-04 2004-03-25 Akira Ishizaki Compactor bag with a check valve
US20040096128A1 (en) * 2002-11-14 2004-05-20 Daiwa Gravure Co. Ltd. Storage bag
US7708464B2 (en) * 2005-09-02 2010-05-04 Mikio Tanaka Deaeration valve and compression bag equipped therewith

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370780A (en) * 1965-10-22 1968-02-27 Continental Can Co Bag with self-venting back seam
US4057144A (en) * 1975-01-17 1977-11-08 Schuster Samuel J High strength bag for storing materials in sterile condition
US5399022A (en) * 1993-02-25 1995-03-21 Ab Specialty Packaging, Inc. Venting structure for a multiple ply bag
US5655842A (en) * 1993-12-28 1997-08-12 Packs Co., Ltd. Wrapping device
US5553942A (en) * 1994-03-11 1996-09-10 Robert Bosch Gmbh Laminate for producing packaging containers
US5893461A (en) * 1997-04-07 1999-04-13 Fres-Co System Usa, Inc. Pressure vacuum release hermetic valve for flexible packages
US5902046A (en) * 1997-07-09 1999-05-11 Daiwa Gravure Co., Ltd. Packaging bag
US6170985B1 (en) * 1997-10-15 2001-01-09 Lyle F. Shabram, Jr. Bag with venting means
US20020009240A1 (en) * 1999-08-13 2002-01-24 Anderson Brent G. Storage bag with one-way air valve
US20040057636A1 (en) * 2002-09-04 2004-03-25 Akira Ishizaki Compactor bag with a check valve
US20040096128A1 (en) * 2002-11-14 2004-05-20 Daiwa Gravure Co. Ltd. Storage bag
US7090398B2 (en) * 2002-11-14 2006-08-15 Daiwa Gravure Co., Ltd. Gas venting storage bag
US7708464B2 (en) * 2005-09-02 2010-05-04 Mikio Tanaka Deaeration valve and compression bag equipped therewith

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2179937A1 (de) 2008-10-27 2010-04-28 Sachsa Verpackung GmbH Verpackungssack zur Verpackung von Packgut
US20120261278A1 (en) * 2009-10-26 2012-10-18 Mandzsu Zoltan packaging container with overpressure relief, packing method and system
US20110308153A1 (en) * 2010-06-17 2011-12-22 Jones Lee C Grow Bag System With Irrigation
US10426107B2 (en) * 2010-06-17 2019-10-01 Jardin Holdings I, Llc Grow bag system with irrigation
US20140241649A1 (en) * 2011-10-06 2014-08-28 Nordfolien Gmbh Packaging container that can be ventilated
US9156591B2 (en) * 2011-10-06 2015-10-13 Nordfolien Gmbh Packaging container that can be ventilated
AU2012320946B2 (en) * 2011-10-06 2016-10-20 Nordfolien Gmbh Packaging container that can be vented
US20160001909A1 (en) * 2013-02-27 2016-01-07 Haver & Boecker Ohg Packaging machine and method for filling open bags
WO2018060277A1 (de) * 2016-09-27 2018-04-05 Windmöller & Hölscher Kg Kunststoffsack, insbesondere ffs-sack, sowie verfahren und vorrichtung zur herstellung und zum befüllen eines sacks
CN109996736A (zh) * 2016-09-27 2019-07-09 温德莫勒及霍尔希尔公司 塑料袋、尤其是ffs袋以及用于制造和用于填装袋的方法和设备
US11401076B2 (en) 2016-09-27 2022-08-02 Windmöller & Hölscher Kg Valve bag and method and system for producing a valve bag

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AS Assignment

Owner name: HAVER & BOECKER OHG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EWERSZUMRODE, ANDREAS;REEL/FRAME:019666/0917

Effective date: 20070514

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION