US20060035777A1 - Self-closing sealable valve bag - Google Patents
Self-closing sealable valve bag Download PDFInfo
- Publication number
- US20060035777A1 US20060035777A1 US10/917,871 US91787104A US2006035777A1 US 20060035777 A1 US20060035777 A1 US 20060035777A1 US 91787104 A US91787104 A US 91787104A US 2006035777 A1 US2006035777 A1 US 2006035777A1
- Authority
- US
- United States
- Prior art keywords
- valve
- flap
- sleeve
- valve sleeve
- bag
- 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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/14—Valve bags, i.e. with valves for filling
- B65D31/142—Valve bags, i.e. with valves for filling the filling port being formed by folding a flap connected to a side, e.g. block bottoms
Definitions
- This invention relates generally to valve bags, and more particularly to valve sleeves used in valve bags for granular products, such as animal feed, animal supplements, grains, and fertilizers.
- Flexible bags such as paper shipping sacks may include sealable sleeves placed in the filling valves.
- a sealable sleeve provides a convenient means to securely close the flexible bag to prevent the contents of the bag from leaking or sifting out of the bag.
- Sleeves may be constructed of polyethylene tubing or of paper, for example.
- a typical paper sleeve for a paper shipping sack (such as a pasted valve type multi-wall shipping sack) is made from a rectangular sheet of kraft paper that is rolled into a cylindrical shape and secured in the cylindrical shape by overlapping and gluing opposing edges of the sheet of paper to one another, forming a lapped seam.
- Such a sleeve is typically mounted to an opening, called a valve or filling aperture, located in a corner of the bag, that is used to allow introduction of the product that is to be held within the bag. This arrangement has been used even in more advanced shipping sacks that include a thermoplastic film liner adhered to the inner surface of the sleeve valve.
- thermoplastic film liner near an exterior end of the sleeve valve to secure the contents within the shipping sack. Sealing is typically accomplished using conduction heating, pressure, microwave energy, or ultrasonic application.
- valve tube Due to the stiffness of the valve tube material, the valve tube tends to remain open somewhat, as the bag is dropped onto the conveyer, leading to unacceptable spillage and dusting.
- operation of the sealing apparatus may require that the bag be tipped from an upright position, to a position on its side, further leading to the possibility of dusting and spillage.
- valve bag comprising: a bag body; a valve passage formed in the bag body; and a sealable valve sleeve secured within the valve passage, an exterior portion of the valve sleeve extending along an adjacent portion of the bag body, the exterior portion of the valve sleeve being unsecured to the adjacent portion of the bag body.
- FIG. 1 shows an unfilled self-closing sealable valve bag according to the present invention.
- FIG. 2 is a cross-sectional side view of a portion of the valve bag shown in FIG. 1 showing details of the valve.
- FIG. 1 shows a self-closing sealable valve bag 10 with a top 12 and bottom 14 .
- a self-closing valve 16 is positioned between overlapping flaps 20 , 22 (See FIG. 2 ), typically in the top 12 of the bag 10 .
- the top 12 of bag 10 is formed by at least partially overlapping inner flap 20 and outer flap 22 .
- a valve passage 18 is formed between the overlapping flaps 20 , 22 .
- Valve (or valve sleeve) 16 is positioned within the valve passage 18 and is secured (as described below) to the inner and outer flaps 20 , 22 .
- Valve 16 consists of a tubular valve liner 24 , which is preferably formed from a polymeric material such as polyethylene, with an upper valve support 26 and a lower valve support 28 secured to the valve liner 24 .
- valve supports 26 , 28 are formed from kraft paper and are separate flat pieces of the kraft paper.
- valve sleeve 16 extends laterally beyond the end of outer flap 22 .
- the exterior portion 30 of valve sleeve 16 is not secured to inner flap 20 (shown at 50 ). This allows the unsecured exterior portion 30 to be rotated upward after bag 10 is filled so that both sides of this exterior portion 30 are accessible by a sealing device.
- pressure and/or heat is applied to the exterior portion 30 to seal the valve 16 closed.
- Other means can be used to seal the valve closed, such as adhesives, deformable closure systems, similar to those commercially available under the trademark Ziploc®, etc.
- the inner end 32 of the upper valve support 26 extends interiorly beyond the valve liner inner end 38 .
- the inner end 34 of the lower valve support extends to the valve liner inner end 38 .
- the interior portion of the valve sleeve 16 is secured to and only partially supported by the inner flap 20 . At least a portion (the right most portion shown in FIG. 2 ) is not secured to and is unsupported by the inner flap 20 .
- the inner end 42 of the inner flap extends below and is unsecured to the lower valve support 28 .
- valve sleeve 16 has a first or exterior end 30 that remains unsecured to the adjacent portion of the inner flap 20 , a middle portion 36 that is secured to the inner flap 20 , and a second end portion (the right most portion shown in FIG. 2 ) that is unsecured and unsupported by the inner flap 20 .
- valve passage 18 in valve sleeve 16 During filling, material flows into bag 10 through valve passage 18 in valve sleeve 16 . As the material approaches the top 12 of bag 10 , the material will fill the area between the inner end 42 of the inner flap and the lower valve support 28 causing the valve sleeve 16 to collapse and close the valve passage 18 . This allows temporary handling of the filled bag until the exterior portion 30 of valve 16 can be permanently sealed closed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
Abstract
Description
- This invention relates generally to valve bags, and more particularly to valve sleeves used in valve bags for granular products, such as animal feed, animal supplements, grains, and fertilizers.
- Flexible bags such as paper shipping sacks may include sealable sleeves placed in the filling valves. A sealable sleeve provides a convenient means to securely close the flexible bag to prevent the contents of the bag from leaking or sifting out of the bag. Sleeves may be constructed of polyethylene tubing or of paper, for example.
- A typical paper sleeve for a paper shipping sack (such as a pasted valve type multi-wall shipping sack) is made from a rectangular sheet of kraft paper that is rolled into a cylindrical shape and secured in the cylindrical shape by overlapping and gluing opposing edges of the sheet of paper to one another, forming a lapped seam. Such a sleeve is typically mounted to an opening, called a valve or filling aperture, located in a corner of the bag, that is used to allow introduction of the product that is to be held within the bag. This arrangement has been used even in more advanced shipping sacks that include a thermoplastic film liner adhered to the inner surface of the sleeve valve. In order to seal the paper sleeve and therefore the valve or filling aperture after the shipping sack is full, heat is applied to the thermoplastic film liner near an exterior end of the sleeve valve to secure the contents within the shipping sack. Sealing is typically accomplished using conduction heating, pressure, microwave energy, or ultrasonic application.
- The trend in manufacturing processes now, however, particularly with extended valve tube bags, is not to provide one sealing apparatus per packing apparatus, since it requires less capital expense to use only one or two sealing apparatus for a packaging line, and the line speed can also be increased if common sealing apparatus are used for all the packing apparatus. The difficulty lies in that the filled, but unclosed and unsealed bags must be transported by conveyer to the sealing apparatus location. The bags may typically be dropped onto a conveyer.
- Due to the stiffness of the valve tube material, the valve tube tends to remain open somewhat, as the bag is dropped onto the conveyer, leading to unacceptable spillage and dusting. In addition, the operation of the sealing apparatus may require that the bag be tipped from an upright position, to a position on its side, further leading to the possibility of dusting and spillage.
- The foregoing illustrates limitations known to exist in present valve bags. Thus, it is apparent that it would be advantageous to provide an alternative directed to overcoming one or more of the limitations set forth-above. Accordingly, a suitable alternative is provided including features more fully disclosed hereinafter.
- In one aspect of the present invention, this is accomplished by providing a valve bag comprising: a bag body; a valve passage formed in the bag body; and a sealable valve sleeve secured within the valve passage, an exterior portion of the valve sleeve extending along an adjacent portion of the bag body, the exterior portion of the valve sleeve being unsecured to the adjacent portion of the bag body.
- The foregoing and other aspects will become apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawing figures.
-
FIG. 1 shows an unfilled self-closing sealable valve bag according to the present invention; and -
FIG. 2 is a cross-sectional side view of a portion of the valve bag shown inFIG. 1 showing details of the valve. -
FIG. 1 shows a self-closingsealable valve bag 10 with a top 12 and bottom 14. A self-closingvalve 16 is positioned between overlappingflaps 20, 22 (SeeFIG. 2 ), typically in the top 12 of thebag 10. - As shown in
FIG. 2 , the top 12 ofbag 10 is formed by at least partially overlappinginner flap 20 andouter flap 22. Avalve passage 18 is formed between the overlappingflaps - Valve (or valve sleeve) 16 is positioned within the
valve passage 18 and is secured (as described below) to the inner andouter flaps Valve 16 consists of atubular valve liner 24, which is preferably formed from a polymeric material such as polyethylene, with anupper valve support 26 and alower valve support 28 secured to thevalve liner 24. Typically, valve supports 26, 28 are formed from kraft paper and are separate flat pieces of the kraft paper. - An
exterior portion 30 of thevalve sleeve 16 extends laterally beyond the end ofouter flap 22. Theexterior portion 30 ofvalve sleeve 16 is not secured to inner flap 20 (shown at 50). This allows the unsecuredexterior portion 30 to be rotated upward afterbag 10 is filled so that both sides of thisexterior portion 30 are accessible by a sealing device. Depending upon the material used for thevalve liner 24, pressure and/or heat is applied to theexterior portion 30 to seal thevalve 16 closed. Other means, not shown, can be used to seal the valve closed, such as adhesives, deformable closure systems, similar to those commercially available under the trademark Ziploc®, etc. - Preferably, the
inner end 32 of theupper valve support 26 extends interiorly beyond the valve linerinner end 38. Also, preferably, theinner end 34 of the lower valve support extends to the valve linerinner end 38. The interior portion of thevalve sleeve 16 is secured to and only partially supported by theinner flap 20. At least a portion (the right most portion shown inFIG. 2 ) is not secured to and is unsupported by theinner flap 20. Preferably, theinner end 42 of the inner flap extends below and is unsecured to thelower valve support 28. - In one embodiment, the
valve sleeve 16 has a first orexterior end 30 that remains unsecured to the adjacent portion of theinner flap 20, amiddle portion 36 that is secured to theinner flap 20, and a second end portion (the right most portion shown inFIG. 2 ) that is unsecured and unsupported by theinner flap 20. - During filling, material flows into
bag 10 throughvalve passage 18 invalve sleeve 16. As the material approaches thetop 12 ofbag 10, the material will fill the area between theinner end 42 of the inner flap and thelower valve support 28 causing thevalve sleeve 16 to collapse and close thevalve passage 18. This allows temporary handling of the filled bag until theexterior portion 30 ofvalve 16 can be permanently sealed closed.
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/917,871 US20060035777A1 (en) | 2004-08-13 | 2004-08-13 | Self-closing sealable valve bag |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/917,871 US20060035777A1 (en) | 2004-08-13 | 2004-08-13 | Self-closing sealable valve bag |
Publications (1)
Publication Number | Publication Date |
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US20060035777A1 true US20060035777A1 (en) | 2006-02-16 |
Family
ID=35800701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/917,871 Abandoned US20060035777A1 (en) | 2004-08-13 | 2004-08-13 | Self-closing sealable valve bag |
Country Status (1)
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US (1) | US20060035777A1 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1935797A1 (en) * | 2006-12-11 | 2008-06-25 | Mondi Packaging AG | Valve sack and method for its production |
US20090263048A1 (en) * | 2008-04-16 | 2009-10-22 | Iannelli Ii Michael Louis | Bag Structures And Methods Of Assembling The Same |
US20090263049A1 (en) * | 2008-04-16 | 2009-10-22 | Iannelli Ii Michael Louis | Bag Structures And Methods Of Assembling The Same |
US20100008603A1 (en) * | 2008-07-09 | 2010-01-14 | Julie Rossing Smith | Sealable repulpable valve bag and method of assembling |
US20100170894A1 (en) * | 2008-12-30 | 2010-07-08 | Ultraperf Technologies Inc. | Microwaveable pouch capable of controlled respiration for extended shelf like of produce contained therein |
US7784160B2 (en) | 2007-03-16 | 2010-08-31 | S.C. Johnson & Son, Inc. | Pouch and airtight resealable closure mechanism therefor |
US7857515B2 (en) | 2007-06-15 | 2010-12-28 | S.C. Johnson Home Storage, Inc. | Airtight closure mechanism for a reclosable pouch |
US7874731B2 (en) | 2007-06-15 | 2011-01-25 | S.C. Johnson Home Storage, Inc. | Valve for a recloseable container |
US7887238B2 (en) | 2007-06-15 | 2011-02-15 | S.C. Johnson Home Storage, Inc. | Flow channels for a pouch |
US7886412B2 (en) | 2007-03-16 | 2011-02-15 | S.C. Johnson Home Storage, Inc. | Pouch and airtight resealable closure mechanism therefor |
US7946766B2 (en) | 2007-06-15 | 2011-05-24 | S.C. Johnson & Son, Inc. | Offset closure mechanism for a reclosable pouch |
US7967509B2 (en) | 2007-06-15 | 2011-06-28 | S.C. Johnson & Son, Inc. | Pouch with a valve |
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Owner name: MID-AMERICA PACKAGING, LLC, OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JOHNSON, DAVID G.;REEL/FRAME:015691/0427 Effective date: 20040812 |
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Owner name: PNC BANK, NATIONAL ASSOCIATION, PENNSYLVANIA Free format text: SECURITY AGREEMENT;ASSIGNOR:MID-AMERICA PACKAGING, LLC;REEL/FRAME:017373/0750 Effective date: 20060111 |
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Owner name: MID-AMERICA PACKAGING, LLC, OHIO Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:PNC BANK;REEL/FRAME:027419/0599 Effective date: 20111207 |